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Zhang L, Jiang Z, Guo J, Zhang C, Xu X, Shi D, Shao Y, Ai Z, Wu Y, Hao X. Deep insight into regulation mechanism of band distribution in phase junction CdS for enhanced photocatalytic H 2 production. J Colloid Interface Sci 2024; 669:146-156. [PMID: 38713954 DOI: 10.1016/j.jcis.2024.04.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/09/2024]
Abstract
An in-depth understanding of structure-activity relationship between the phase constitution and solar-to-hydrogen (STH) conversion efficiency is conducive to guiding the optimization route of targeted photocatalyst candidates, further establishing advanced photocatalytic systems. Herein, based on the concept of phase engineering, we encompassed the crystalline phase of CdS and achieved precise regulation of phase proportion as well as phase boundary width in the phase junction for the first time. The above cooperative effect not only modifies energy band distribution for sufficient redox potentials, but also guarantees the reverse migration orientation of photogenerated carriers in phase junction, thereby endowing photocarriers with a prolonged lifetime. Compared to pure cubic or hexagonal phase (72.6 or 101.1 μmol h-1 g-1), this CdS system with optimized phase junction demonstrates an improved photocatalytic hydrogen evolution activity of 1.04 mmol h-1 g-1 and favorable stability without cocatalyst assistance, which mainly stems from an efficient protons reduction process interacting with long-lived photogenerated electrons. This research explores the mechanism behind phase regulation and its relationship with junction capability, providing a powerful strategy to manipulate crystal phase distribution and paving a feasible avenue for other phase-dependent photocatalysts towards rational design of heterostructures based on different phases in solar energy conversion field.
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Affiliation(s)
- Lei Zhang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Zhiyuan Jiang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Jingru Guo
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Chao Zhang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Xiaolong Xu
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Dong Shi
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Yongliang Shao
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Zizheng Ai
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China.
| | - Yongzhong Wu
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Xiaopeng Hao
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China.
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Li Y, Xu X, Ai Z, Zhang B, Shi D, Yang M, Hu H, Shao Y, Wu Y, Hao X. Enhancing Electrocatalytic Kinetics via Synergy of Co Nanoparticles and Co/Ni-N 4-C- and N-Doped Porous Carbon. ACS Appl Mater Interfaces 2024. [PMID: 38745464 DOI: 10.1021/acsami.4c00084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Transition-metal species embedded in carbon have sparked intense interest in the fields of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). However, improvement of the electrocatalytic kinetics remains a challenge caused by the synergistic assembly. Here, we propose a biochemical strategy to fabricate the Co nanoparticles (NPs) and Co/Ni-N4-C co-embedded N-doped porous carbon (CoNPs&Co/Ni-N4-C@NC) catalysts via constructing the zeolitic imidazolate framework (ZIF)@yeast precursor. The rich amino groups provide the possibility for the anchorage of Co2+/Ni2+ ions as well as the construction of Co/Ni-ZIF@yeast through the yeast cell biomineralization effect. The functional design induces the formation of CoNPs and Co/Ni-N4-C sites in N-doped carbon as well as regulates the porosity for exposing such sites. Synergy of CoNPs, Co/Ni-N4-C, and porous N-doped carbon delivered excellent electrocatalytic kinetics (the ORR Tafel slope of 76.3 mV dec-1 and the OER Tafel slope of 80.4 mV dec-1) and a high voltage of 1.15 V at 10 mA cm-2 for the discharge process in zinc air batteries. It provides an effective strategy to fabricate high-performance catalysts.
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Affiliation(s)
- Yalong Li
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Xiaolong Xu
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Zizheng Ai
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Baoguo Zhang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Dong Shi
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Mingzhi Yang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Haixiao Hu
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yongliang Shao
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yongzhong Wu
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Xiaopeng Hao
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
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Gao XY, Dai SA, Feng XH, Shi D. [Analysis of the correlation between peri-implant probing depth and radiographic bone level]. Zhonghua Kou Qiang Yi Xue Za Zhi 2024; 59:472-478. [PMID: 38637001 DOI: 10.3760/cma.j.cn112144-20230830-00123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Objective: To evaluate the correlation between peri-implant probing depth (PPD) and radiographic bone level (rBL) in implants with peri-implantitis. Methods: From January 2019 to December 2022, 24 patients with 30 implants who suffered from peri-implantitis at the Department of Periodontology, Peking University School and Hospital of Stomatology were included in the present research. SPSS 26.0 software was used to simple random sampling select 30 healthy implants from which with electronic examination records in Department of Periodontology, Peking University School and Hospital of Stomatology from January 2007 to June 2023 as the control group. On the premise of retaining the implant prosthesis, PPD (distance between pocket bottom and peri-implant soft tissue margin) was examined using a Williams periodontal probe with a light force (about 0.2 N), and a total of 4 sites were recorded for each implant. Periapical radiography and cone beam CT were applied to measure the rBL (distance between the reference point at the neck of the implant and the apical point of the bone defect) and the width of the bone defect (DW), and the type of the bone defect was recorded. The correlation and consistency between the diagnosis of PPD and rBL were analyzed. Results: PPD was significantly correlated with rBL in a total of 60 implants in 180 sites (r=0.64, P<0.001). The chi-square test showed an 8.15-fold increase in the detection rate of PD≥6 mm at sites with rBL≥1 mm (P<0.001). Multivariate logistic regression analysis showed that rBL was still statistically associated with PPD after adjustment for jaw position and examination position of implants. Take rBL <1 mm as reference, the odds ratios (OR) of 1 mm≤rBL<2 mm, 2 mm≤rBL<3 mm and rBL≥3 mm group with PPD were 6.23 (P=0.014), 2.77 (P=0.183) and 10.87 (P=0.001), respectively. Conclusions: There is a positive correlation between PPD and rBL in implants with peri-implantitis. PPD can be used as a clinical examination index to assist in estimating the level of peri-implant bone under the premise of retaining the prosthesis.
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Affiliation(s)
- X Y Gao
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - S A Dai
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - X H Feng
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - D Shi
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Huang M, Kong Z, Ai Z, Shi D, Yang M, Yao X, Shao Y, Wu Y, Hao X. Twin Zn 1- x Cd x S Solid Solution: Highly Efficient Photocatalyst for Water Splitting. Small 2024; 20:e2304784. [PMID: 37699758 DOI: 10.1002/smll.202304784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/27/2023] [Indexed: 09/14/2023]
Abstract
Twins in crystal defect, one of the significant factors affecting the physicochemical properties of semiconductor materials, are applied in catalytic conversion. Among the catalysts serving for photocatalytic water splitting, Zn1- x Cdx S has become a hot-point due to its adjustable energy band structure. Via limiting mass transport to control the release rate of anions/cations, twin Zn1- x Cdx S solid solution is prepared successfully, which lays a foundation for the construction of other twin crystals in the future. On twin Zn1- x Cdx S, water tends to be dissociated after being adsorbed by Zn2+ /Cd2+ at twin boundary, then the fast-moving electrons at twin boundary quickly combine with the protons already attached to S2- to form hydrogen. According to the theoretical calculation, not only the intracrystalline electron mobility, but also the extracrystalline capacity of water-adsorption/dissociation and proton-adsorption on the twin boundary are superior to those of the counterpart plane in defect-free phase. The synthetic twin Zn1- x Cdx S apparent quantum efficiency of photocatalysis water splitting for hydrogen reached 82.5% (λ = 420 nm). This research opens up an avenue to introduce twins in crystals and it hopes to shed some light on photocatalysis.
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Affiliation(s)
- Meiling Huang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Zhen Kong
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Zizheng Ai
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Dong Shi
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Mingzhi Yang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Xiaogang Yao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Yongliang Shao
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Yongzhong Wu
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Xiaopeng Hao
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
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Dai SA, Meng HX, Feng XH, Shi D. [Interpretation of the European Federation of Periodontology S3 level clinical practice guideline for prevention and treatment of peri-implant diseases]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:1235-1242. [PMID: 38061865 DOI: 10.3760/cma.j.cn112144-20230906-00145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The S3 level clinical practice guideline for the prevention and treatment of peri-implant diseases, developed by the European Federation of Periodontology, was published in June, 2023 (DOI: 10.1111/jcpe.13823), which culminated in the recommendations for implementation of various different interventions before, during and after implant placement/loading. Aim of the present article is to summarize and interpret the key points of this guideline and help clinicians understand this guideline better, in order to standardize the prevention and treatment of peri-implant diseases.
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Affiliation(s)
- S A Dai
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H X Meng
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - X H Feng
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - D Shi
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Zhang YH, Cai S, Chen ZY, Zhang Y, Jiang JN, Liu YF, Dang JJ, Zhong PL, Shi D, Dong YH, Hu PJ, Zhu GR, Ma J, Song Y. [Research on the association between the occurrence of spermarche and menarche and psychological distress among Chinese children and adolescents aged 9-18 years]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1545-1551. [PMID: 37875440 DOI: 10.3760/cma.j.cn112338-20230514-00298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Objective: To analyze the association between the occurrence of spermarche and menarche and psychological distress among Chinese Han children and adolescents aged 9 to 18 years. Methods: Data were drawn from the 2019 Chinese National Survey on Students' Constitution and Health, and a total of 54 438 boys aged 11 to 18 years and 76 376 girls aged 9 to 18 years with psychological distress, spermarche/menarche records were included in the final analysis. The occurrence of spermarche/menarche was recorded by physicians, and psychological distress was classified according to the Kessler Psychological Distress Scale scores. The chi-square test was used to compare the difference between groups in the occurrence of spermarche/menarche, and the multinomial logistic regression model and stratification analysis was established to analyze the association between psychological distress and spermarche/menarche. Results: The incidence of spermarche/menarche in 2019 ranged from 6.3% to 96.5% for eight age groups of Chinese boys and 2.8% to 99.0% for ten age groups of girls. The rates of high psychological distress among boys and girls were 32.5% and 32.7%. Among boys aged 11 to 18 years, the rate of high psychological distress increased with age, with a trend test P<0.001, and the difference in the rate of high psychological distress between those who had and had not had their spermarche was not statistically significant in all age groups. Among girls aged 9 to 18 years, the rate of high psychological distress increased with age, with a trend P<0.001; the rate of high psychological distress was higher in the group with menarche at age 10 and 12 than in the group without menarche (all P<0.05). High psychological distress was positively correlated with spermarche among boys aged 13-15 years living in urban areas and hight level economic development areas (OR=1.11, 95%CI: 1.02-1.21;OR=1.18, 95%CI: 1.06-1.32). Overall, high psychological distress was positively correlated with menarche in girls aged 9-12 and 13-15 years (OR=1.33, 95%CI: 1.25-1.42; OR=1.22, 95%CI: 1.07-1.39). High psychological distress was positively correlated with menarche among girls aged 9-12 years living in different regions except for the Northeast region, in areas with different levels of economic development, and in urban and rural areas, in girls aged 13-15 years living in urban, central, and western regions, and in girls aged 16-18 years residing in the central region. Conclusions: This study found an association between the occurrence of spermarche/menarche and psychological distress among Chinese Han children and adolescents aged 9 to 18 years in 2019, which was particularly significant among girls aged 9 to 12 years and boys aged 13 to 15 years living in areas with higher levels of socioeconomic development.
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Affiliation(s)
- Y H Zhang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - S Cai
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Z Y Chen
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y Zhang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J N Jiang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y F Liu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J J Dang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - P L Zhong
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - D Shi
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y H Dong
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - P J Hu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - G R Zhu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J Ma
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y Song
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
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Cai S, Chen ZY, Zhang YH, Zhang Y, Jiang JN, Liu YF, Dang JJ, Zhong PL, Shi D, Dong YH, Hu PJ, Zhu GR, Ma J, Song Y. [Research on the association between the status of physical fitness and psychological distress among Chinese children and adolescents aged 13-18 years]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1552-1557. [PMID: 37875441 DOI: 10.3760/cma.j.cn112338-20230408-00222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Objective: To describe the status of physical fitness of children and adolescents aged 13-18 years in China in 2019 and analyze its association with psychological distress. Methods: Data were drawn from the 2019 Chinese National Survey on Students' Constitution and Health, and 90 633 Han children and adolescents aged 13-18 years were included. Physical fitness was evaluated by "National Students Constitutional Health Standards" (2014 revised edition). Psychological distress was classified according to the scores of the Kessler Psychological Distress Scale: ≤19, 20-24, 25-29, and ≥30 scores indicated no, mild, moderate, and severe psychological distress, respectively, with moderate and severe psychological distress collectively referred to as high psychological distress. The χ2 test was used to compare the distribution differences between boys and girls, the Cochran-Armitage test was used to analyze the trend, and the multinomial logistic regression in the mixed effect model was established to analyze the association between physical fitness and psychological distress. Results: In 2019, the unqualified rate of physical fitness among children and adolescents aged 13-18 years in China was 17.2%, and the prevalence of excellent and good physical fitness was 18.2%, which was lower among boys (15.9%) than girls (20.5%) with a statistically significant difference (P<0.05). The excellent and good physical fitness rate showed a significantly decreasing trend with age (trend test P<0.05). The rate of high psychological distress among children and adolescents aged 13-18 years in China in 2019 was 39.3%, with boys (37.0%) having a lower prevalence than girls (41.6%), supported by a statistically significant difference (P<0.05), and a decreasing trend with the degree of physical fitness was observed both in boys and girls (trend test P<0.05). The multinomial logistic regression model showed that the prevalence of moderate (OR=0.83, 95%CI: 0.79-0.88, P<0.001) and severe (OR=0.81, 95%CI: 0.77-0.86, P<0.001) psychological distress were both lower in children and adolescents with excellent and good physical fitness. Conclusion: The status of physical fitness and psychological distress of Chinese children and adolescents aged 13-18 in 2019 was not optimistic, with physical fitness showing a significantly negative association with psychological distress.
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Affiliation(s)
- S Cai
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Z Y Chen
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y H Zhang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y Zhang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J N Jiang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y F Liu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J J Dang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - P L Zhong
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - D Shi
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y H Dong
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - P J Hu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - G R Zhu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J Ma
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y Song
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
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Chen ZY, Cai S, Ma N, Zhang YH, Zhang Y, Jiang JN, Liu YF, Dang JJ, Zhong PL, Shi D, Dong YH, Zhu GR, Ma J, Song Y. [Prevalence of psychological distress among Chinese children and adolescents aged 9-18 years]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1537-1544. [PMID: 37875439 DOI: 10.3760/cma.j.cn112338-20230517-00304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Objective: To describe the prevalence of psychological distress and to analyze its influencing factors among Chinese children and adolescents aged 9-18 years in 2019. Methods: Data was from the 2019 Chinese National Survey on Students' Constitution and Health, and 148 892 children and adolescents were included. Psychological distress was measured using the Kessler Psychological Distress Scale (K10): scores ≤19 were defined as no psychological distress, scores between 20-24 were defined as mild psychological distress, scores between 25-29 were defined as moderate psychological distress, and scores ≥30 were defined as severe psychological distress (moderate to severe psychological distress were defined as high psychological distress). The ANOVA, t test, and χ2 test were used to compare the differences in K10 scores and high psychological distress rates among children and adolescents with different characteristics. The ANOVA and trend χ2 test were used to analyze the trends. Modified-Poisson regression models were used to determine influencing factors of high psychological distress. Results: The K10 scores for Chinese children and adolescents aged 9-18 years in 2019 was 21.5±9.2, and their rate of high psychological distress was 31.6%. The rates of high psychological distress among children and adolescents aged 9-12, 13-15, and 16-18 years were 22.3%, 35.9%, and 38.8%. K10 scores and rates of high psychological distress showed an increasing trend as age increased (trends test all P<0.001). K10 scores and rates of high psychological distress were higher among children and adolescents who were older, female, rural, in areas with medium to low GDP per capita level, and with lower parental education (all P<0.001). Multifactorial modified-Poisson regression analysis showed that children and adolescents aged 13-15 years, 16-18 years, female, rural, and in areas with low to moderate GDP per capita level were at higher risk of high psychological distress (all P<0.05), with aOR (95%CI) of 1.55 (1.52-1.58), 1.66 (1.63-1.69), 1.07 (1.05-1.09), 1.02 (1.01-1.04), 1.10 (1.07-1.12). Children and adolescents in areas with medium to high GDP per capita level, whose father had a secondary or high school degree, whose father had a college degree or above, whose mother had a secondary or high school degree, and whose mother had a college degree or above were at lower risk of high psychological distress (all P<0.05), with aOR (95%CI) of 0.96 (0.94-0.98), 0.92 (0.90-0.93), 0.84 (0.82-0.86), 0.95 (0.93-0.97), 0.86 (0.83-0.88). Conclusions: The prevalence of psychological distress was high among Chinese children and adolescents aged 9-18 years in 2019, which is a vital problem. Mental health interventions need to be implemented among children and adolescents that were older, girls, rural, live in areas with lower economic levels, and whose parents have a lower education level.
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Affiliation(s)
- Z Y Chen
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - S Cai
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - N Ma
- Vanke School of Public Health, Tsinghua University, Beijing 100084, China
| | - Y H Zhang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y Zhang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J N Jiang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y F Liu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J J Dang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - P L Zhong
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - D Shi
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y H Dong
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - G R Zhu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J Ma
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y Song
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
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9
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Lu F, Yao J, Ji Y, Shi D, Zhang P, Zhang S. Mixed solvent-assisted synthesis of high mass loading amorphous NiCo-MOF as a promising electrode material for supercapacitors. Dalton Trans 2023; 52:13395-13404. [PMID: 37691555 DOI: 10.1039/d3dt02354k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The pursuit of high mass loading metal-organic framework (MOF) materials via a simple method is crucial to achieve high-performance supercapacitors. Herein, an amorphous NiCo-MOF material with a high mass loading of up to 10.3 mg cm-2 was successfully prepared using a mixed solvent system of ethanol and water. In addition, by adjusting the volume ratio of ethanol to water, amorphous NiCo-MOFs with three different morphologies including nanospheres, nanopores, and ultra-thick plates were obtained. It was found that the different solvent systems not only affected the growth rate of MOFs, but also controlled their nucleation rate by changing the coordination environment of the metal ions, and thus achieved morphology and mass loading regulation, thereby influencing their energy storage behavior. Notably, the optimum NiCo-MOF exhibited the superior specific capacitance of up to 9.7 F cm-2 (941.8 F g-1) at a current density of 5 mA cm-2 and high-rate capability of 71.1% even at 20 mA cm-2. Moreover, the corresponding assembled solid-state supercapacitor exhibited an excellent energy density of 0.65 mW h cm-2 at a power density of 2 mW cm-2 and capacity retention of 84.7% after 8000 cycles at 30 mA cm-2. Overall, this work proposes a feasible and effective strategy to achieve high mass loading NiCo-MOFs, impacting their ultimate electrochemical performance, which can possibly be further extended to other MOFs with superior capacitance.
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Affiliation(s)
- Faxue Lu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China.
| | - Junnan Yao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China.
| | - Yajun Ji
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China.
| | - Dong Shi
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China.
| | - Pengcheng Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China.
| | - Shixiong Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China.
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10
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Salmenjoki H, Papanikolaou S, Shi D, Tourret D, Cepeda-Jiménez CM, Pérez-Prado MT, Laurson L, Alava MJ. Machine learning dislocation density correlations and solute effects in Mg-based alloys. Sci Rep 2023; 13:11114. [PMID: 37429877 DOI: 10.1038/s41598-023-37633-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 06/24/2023] [Indexed: 07/12/2023] Open
Abstract
Magnesium alloys, among the lightest structural materials, represent excellent candidates for lightweight applications. However, industrial applications remain limited due to relatively low strength and ductility. Solid solution alloying has been shown to enhance Mg ductility and formability at relatively low concentrations. Zn solutes are significantly cost effective and common. However, the intrinsic mechanisms by which the addition of solutes leads to ductility improvement remain controversial. Here, by using a high throughput analysis of intragranular characteristics through data science approaches, we study the evolution of dislocation density in polycrystalline Mg and also, Mg-Zn alloys. We apply machine learning techniques in comparing electron back-scatter diffraction (EBSD) images of the samples before/after alloying and before/after deformation to extract the strain history of individual grains, and to predict the dislocation density level after alloying and after deformation. Our results are promising given that moderate predictions (coefficient of determination [Formula: see text] ranging from 0.25 to 0.32) are achieved already with a relatively small dataset ([Formula: see text] 5000 sub-millimeter grains).
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Affiliation(s)
- H Salmenjoki
- Department of Applied Physics, Aalto University, PO Box 11000, 00076, Aalto, Finland
| | - S Papanikolaou
- NOMATEN Centre of Excellence, National Centre for Nuclear Research, A. Soltana 7, 05-400, Otwock-Swierk, Poland
| | - D Shi
- IMDEA Materials Institute, C/ Eric Kandel, 2, Getafe, 28906, Madrid, Spain
| | - D Tourret
- IMDEA Materials Institute, C/ Eric Kandel, 2, Getafe, 28906, Madrid, Spain
| | - C M Cepeda-Jiménez
- Department of Physical Metallurgy, CENIM-CSIC, Avda. Gregorio del Amo 8, 28040, Madrid, Spain
| | - M T Pérez-Prado
- IMDEA Materials Institute, C/ Eric Kandel, 2, Getafe, 28906, Madrid, Spain
| | - L Laurson
- Computational Physics Laboratory, Tampere University, P.O. Box 692, 33014, Tampere, Finland
| | - M J Alava
- Department of Applied Physics, Aalto University, PO Box 11000, 00076, Aalto, Finland.
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11
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Dang JJ, Cai S, Zhong PL, Wang YQ, Liu YF, Shi D, Chen ZY, Zhang YH, Hu PJ, Li J, Ma J, Song Y. [Association of outdoor artificial light at night exposure with overweight and obesity among children and adolescents aged 9 to 18 years in China]. Beijing Da Xue Xue Bao Yi Xue Ban 2023; 55:421-428. [PMID: 37291916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To analyze the association between outdoor artificial light-at-night (ALAN) exposure and overweight and obesity among children and adolescents aged 9 to 18 years in China. METHODS Using follow-up data of 5 540 children and adolescents aged 9 to 18 years conducted from November 2019 to November 2020 in eight provinces of China, latitude and longitude were determined based on school addresses, and the mean monthly average nighttime irradiance at the location of 116 schools was extracted by the nearest neighbor method to obtain the mean outdoor ALAN exposure [unit: nW/(cm2·sr)] for each school. Four indicators of overweight and obesity outcomes were included: Baseline overweight and obesity, persistent overweight and obesity, overweight and obesity progression and overweight and obesity incidence. Mixed effects Logistic regression was used to explore the association between ALAN exposure levels (divided into quintiles Q1-Q5) and baseline overweight and obesity, persistent overweight and obesity, overweight and obesity progression and overweight and obesity incidence. In addition, a natural cubic spline function was used to explore the exposure response association between ALAN exposure (a continuous variable) and the outcomes. RESULTS The prevalence of baseline overweight and obesity, persistent overweight and obesity, overweight and obesity progression and overweight and obesity incidence among the children and adolescents in this study were 21.6%, 16.3%, 2.9% and 12.8%, respectively. The OR value for the association between ALAN exposure and baseline overweight and obesity was statistically significant when ALAN exposure levels reached Q4 or Q5, 1.90 (95%CI: 1.26-2.86) and 1.77 (95%CI: 1.11-2.83), respectively, compared with the children and adolescents in the Q1 group of ALAN exposure. Similar to the results for baseline overweight and obesity, the OR values for the association with persistent overweight and obesity were 1.89 (95%CI: 1.20-2.99) and 1.82 (95%CI: 1.08-3.06) when ALAN exposure levels reached Q4 or Q5, respectively, but none of the OR values for the association between ALAN and overweight and obesity progression and overweight and obesity incidence were statistically significant. Fitting a natural cubic spline function showed a non-linear trend between ALAN exposure and persistent overweight and obesity. CONCLUSION There is a positive association between ALAN exposure and overweight and obesity in children and adolescents, and the promotion of overweight obesity in children and adolescents by ALAN tends to have a cumulative effect rather than an immediate effect. In the future, while focusing on the common risk factors for overweight and obesity in children and adolescents, there is a need to improve the overweight and obesity-causing nighttime light exposure environment.
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Affiliation(s)
- J J Dang
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - S Cai
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - P L Zhong
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - Y Q Wang
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - Y F Liu
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - D Shi
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - Z Y Chen
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - Y H Zhang
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - P J Hu
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - J Li
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - J Ma
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
| | - Y Song
- Institute of Child and Adolescent Health, Peking University School of Public Health, Beijing 100191, China
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12
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Cheng J, Chen L, Tao X, Qiang X, Li R, Ma J, Shi D, Qiu Z. Efficacy of surgical methods for peri-implantitis: a systematic review and network meta-analysis. BMC Oral Health 2023; 23:227. [PMID: 37076816 PMCID: PMC10116816 DOI: 10.1186/s12903-023-02956-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 04/10/2023] [Indexed: 04/21/2023] Open
Abstract
BACKGROUND Peri-implantitis is the most difficult biological complication associated with dental implants, often requiring surgical treatments in advanced stages. This study compares the effectiveness of different surgical methods for peri-implantitis. METHODS Randomized controlled trials (RCTs) of different surgical treatments for peri-implantitis were extracted from EMBASE, Web of Science, Cochrane Library databases, and PubMed systematically. Pairwise comparisons and network meta-analyses (NMA) were conducted to analyze the effect of surgical treatments on probing depth (PD), radiographic bone fill (RBF), mucosal recession (MR), bleeding on probing (BOP), and clinical attachment level (CAL). In addition, risk of bias, quality of evidence, and statistical heterogeneity of the selected studies were evaluated. A total of 13 articles were included in this study, involving open flap debridement (OFD), resective therapy (RT), and augmentative therapy (AT) with and without adjunctive treatments (laser therapy, photodynamic therapy, local antibiotics, phosphoric acid, and ozone therapy). RESULTS AT improved RBF and CAL more than OFD, but does not outperform OFD in reducing peri-implant soft-tissue inflammation. AT, OFD and RT did not significantly alter the levels of MR. Addition of ozone therapy improved the effect of AT, but addition of photodynamic therapy did not affect PD reduction and CAL gain significantly. Similarly, adjuvant treatment with phosphoric acid during RT did not significantly change the outcome of BOP. CONCLUSIONS Within the limitation of this systematic review and NMA, AT was superior to OFD in improving peri-implantitis outcomes. While adjunct use of ozone therapy may further improve the efficacy of AT, the limited evidence supporting this combination therapy argues for cautionary interpretation of these results.
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Affiliation(s)
- Jing Cheng
- Stomatological Hospital of Xiamen Medical College, Xiamen Medical College, Xiamen, People's Republic of China
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, People's Republic of China
| | - Liang Chen
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, People's Republic of China
| | - Xian Tao
- Stomatological Hospital of Xiamen Medical College, Xiamen Medical College, Xiamen, People's Republic of China
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, People's Republic of China
| | - Xiang Qiang
- Stomatological Hospital of Xiamen Medical College, Xiamen Medical College, Xiamen, People's Republic of China
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, People's Republic of China
| | - Ruiying Li
- Stomatological Hospital of Xiamen Medical College, Xiamen Medical College, Xiamen, People's Republic of China
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, People's Republic of China
| | - Jia Ma
- Stomatological Hospital of Xiamen Medical College, Xiamen Medical College, Xiamen, People's Republic of China
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, People's Republic of China
| | - Dong Shi
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, People's Republic of China.
| | - Zijin Qiu
- Stomatological Hospital of Xiamen Medical College, Xiamen Medical College, Xiamen, People's Republic of China.
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, People's Republic of China.
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13
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Wang R, Wang R, Yang T, Jiao J, Cao Z, Meng H, Shi D. Deep learning improves prediction of periodontal therapy effectiveness in Chinese patients. J Periodontal Res 2023; 58:520-528. [PMID: 37042770 DOI: 10.1111/jre.13122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/08/2023] [Accepted: 03/17/2023] [Indexed: 04/13/2023]
Abstract
THE OBJECTIVE This study aims to propose a new model to predict the specific treatment effectiveness at site level by analyzing massive amounts of periodontal clinical data with deep learning methods. THE BACKGROUND DATA DISCUSSING THE PRESENT STATUS OF THE FIELD In light of the low accuracy of current tools, the proposed models cannot fully meet the needs of clinical effectiveness prediction and cannot be applied to on site level prognosis development and formulation of specific treatment plan. MATERIALS AND METHODS Periodontal examination data of 9273 Chinese patients were extracted and used to propose a Sequence-to-Sequence model after performing data management and reconstruction. The model was optimized by introducing the Attention mechanism. RESULTS In the test set, the model obtained an average site-level probing depth (PD) accuracy (defined as the proportion of sites with <1 mm deviation of the predicted result from the true value) of 92.4% and high sensitivity (98.6%) for the pocket closure variable. For sites with baseline PD <5 mm, the model achieved a prediction accuracy of 94.6%, while it decreased to 79.9% at sites with PD ≥5 mm. In contrast, for teeth with initial mean PD ≥5 mm, the prediction accuracy significantly differed between molars and non-molars. CONCLUSION Our model is the first to predict the site-level effectiveness with high accuracy and sensitivity. Future prediction models should incorporate deep learning for improved clinical prediction.
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Affiliation(s)
- Ruiyang Wang
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Ruixin Wang
- School of Computer Science, Peking University, Beijing, China
| | - Tong Yang
- School of Computer Science, Peking University, Beijing, China
| | - Jian Jiao
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Zhanqiang Cao
- Center for Information, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Huanxin Meng
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Dong Shi
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
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14
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De J, Yang G, Hu WJ, Li Y, Shi D, Gao L. [Application and research progress of autologous soft tissue substitute materials in gingival augmentation of natural teeth]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:367-373. [PMID: 37005785 DOI: 10.3760/cma.j.cn112144-20220817-00446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Subepithelial connective tissue or free gingival grafts are often used in traditional mucogingival surgery to treat gingival recession and keratinized gingival insufficiency. However, due to the disadvantages of autologous soft tissue grafts, such as the preparation of the second surgical site, the limited amount of tissue in the donor site, and postoperative discomfort for patients, the research on autologous soft tissue substitute materials has attracted extensive attention. A variety of donor-substitute materials from different sources are currently used in membranous gingival surgeries, including platelet-rich fibrin, acellular dermal matrix, xenogeneic collagen matrix, etc. This paper reviews the research progress and application of several different types of substitute materials in soft tissue augmentation for natural teeth, providing a reference for the application of autologous soft tissue substitutes in clinical gingival augmentation surgery.
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Affiliation(s)
- J De
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - G Yang
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - W J Hu
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y Li
- Department of Oral Medicine, Xining First People's Hospital, Xining 810000, China
| | - D Shi
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - L Gao
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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15
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Ma N, Shi D, Cai S, Dang JJ, Zhong PL, Liu YF, Li J, Dong YH, Hu PJ, Dong B, Chen TJ, Song Y, Ma J. [Trend of age of menarche among Chinese Han girls aged 9 to 18 years from 2010 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:486-491. [PMID: 37032159 DOI: 10.3760/cma.j.cn112150-20220905-00872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
Objective: To analyze the trends of the age of menarche among Chinese Han girls aged 9 to 18 years from 2010 to 2019. Methods: Data were extracted from the Chinese National Surveys on Students' Constitution and Health in 2010, 2014 and 2019. A total of 253 037 Han girls aged 9 to 18 years with complete data on menarche were selected in this study. They were asked one-on-one about their menstrual status, age and residence information. The median age of menarche was estimated by probability regression. U tests were used to compare the difference in median age at menarche in different years. Results: The median age at menarche (95%CI) among Chinese Han girls was 12.47 (12.09-12.83) years in 2010, 12.17 (11.95-12.38) years in 2014 and 12.05 (10.82-13.08) years in 2019, respectively. Compared with that in 2010, the median age at menarche in 2019 decreased by 0.42 years (U=-77.27, P<0.001). The annual average changes were -0.076 years from 2010 to 2014 (U=-57.19, P<0.001) and -0.023 years from 2014 to 2019 (U=-21.41, P<0.001), respectively. The average annual changes in urban areas in the periods of 2010 to 2014 and 2014 to 2019 were -0.071 years and 0.006 years, respectively, while those in rural areas were -0.082 years and -0.053 years, respectively. The average annual changes in the regions of north, northeast, east, south central, southwest and northwest were -0.064, -0.099, -0.091, -0.080, -0.096 and -0.041 years in the period of 2010 to 2014 and 0.001, -0.040, -0.002, -0.005, -0.043 and -0.081 years in the period of 2014 to 2019. Conclusion: The age of menarche among Chinese Han girls aged 9 to 18 years shows an advanced trend from 2010 to 2019, and the trends in urban and rural areas and different regions have different characteristics.
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Affiliation(s)
- N Ma
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - D Shi
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - S Cai
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - J J Dang
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - P L Zhong
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - Y F Liu
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - J Li
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - Y H Dong
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - P J Hu
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - B Dong
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - T J Chen
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - Y Song
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
| | - J Ma
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing 100191, China
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16
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Xiong Y, Wu B, Guo X, Shi D, Xia H, Xu H, Liu X. Galangin delivered by retinoic acid-modified nanoparticles targeted hepatic stellate cells for the treatment of hepatic fibrosis. RSC Adv 2023; 13:10987-11001. [PMID: 37033441 PMCID: PMC10077338 DOI: 10.1039/d2ra07561j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/17/2023] [Indexed: 04/11/2023] Open
Abstract
Hepatic fibrosis (HF) is a chronic hepatic pathological process induced by various liver injuries, with few available therapies. Previous research studies revealed that HF is characterized by the accumulation of excess extracellular matrix in the liver, mainly overexpressed by activated hepatic stellate cells (HSC). Therefore, HSC have been targeted in clinical trials for the management of HF. The aim of the present study was to develop an anti-HF drug delivery system with acrylic resin (Eudragit® RS100, Eud RS100) nanoparticles (NPs) through modification by retinoic acid (RA), modified for binding the retinol-binding protein reporter (RBPR) in HSC. Galangin (GA), is a multiple effects flavonoid which has demonstrated an anti-HF effect in our previous studies. In this study, GA was utilized for the treatment of HF. The results revealed that the NPs were well formed (diameter: 70 nm), spherical in shape, and exhibited uniform distribution and a high encapsulation efficiency. Moreover, a prominent controlled release effect and a significant increase in bioavailability was observed following the encapsulation of GA in NPs. These findings indicated that the limitation of low bioavailability due to the hydrophobic feature of GA was overcome. Furthermore, the pharmacodynamics studies demonstrated that NPs could drastically influence the anti-HF effects of GA after modification with retinoic acid. The results of the present study suggested that retinoic acid-modified GA NPs represent a promising candidate in the development of an anti-HF drug delivery system for the treatment of HF.
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Affiliation(s)
- Yuanguo Xiong
- Department of Pharmacy, Renmin Hospital of Wuhan University Wuhan 430060 China
- School of Pharmaceuticals, Hubei University of Chinese Medicine, No. 1 HuangJiahu Road West Wuhan 430065 China +86 27 68890239
| | - Bing Wu
- Department of Cardiology, Renmin Hospital, Hubei University of Medicine Shiyan 442000 China
- Department of Cardiology, Renmin Hospital of Wuhan University Jiefang Road 238 Wuhan 430060 China +86 27 88041911 +86 27 88041911
- Cardiovascular Research Institute, Wuhan University Jiefang Road 238 Wuhan 430060 China
- Hubei Key Laboratory of Cardiology Wuhan 430060 China
| | - Xianxi Guo
- Department of Pharmacy, Renmin Hospital of Wuhan University Wuhan 430060 China
| | - Dong Shi
- School of Pharmaceuticals, Hubei University of Chinese Medicine, No. 1 HuangJiahu Road West Wuhan 430065 China +86 27 68890239
| | - Hao Xia
- Department of Cardiology, Renmin Hospital of Wuhan University Jiefang Road 238 Wuhan 430060 China +86 27 88041911 +86 27 88041911
- Cardiovascular Research Institute, Wuhan University Jiefang Road 238 Wuhan 430060 China
- Hubei Key Laboratory of Cardiology Wuhan 430060 China
| | - Hanlin Xu
- School of Pharmaceuticals, Hubei University of Chinese Medicine, No. 1 HuangJiahu Road West Wuhan 430065 China +86 27 68890239
| | - Xiaoxiong Liu
- Department of Cardiology, Renmin Hospital of Wuhan University Jiefang Road 238 Wuhan 430060 China +86 27 88041911 +86 27 88041911
- Cardiovascular Research Institute, Wuhan University Jiefang Road 238 Wuhan 430060 China
- Hubei Key Laboratory of Cardiology Wuhan 430060 China
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Lu F, Ji Y, Shi D, Yao J, Pei L. Electrochemically activated 3D Mn doped NiCo hydroxide electrode materials toward high-performance supercapacitors. J Colloid Interface Sci 2023; 641:510-520. [PMID: 36958274 DOI: 10.1016/j.jcis.2023.03.081] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/28/2023] [Accepted: 03/12/2023] [Indexed: 03/19/2023]
Abstract
Metal doping and electrochemical reconstruction had been demonstrated to play a significant role in the preparation of advanced electrode materials, which is helpful to achieve high-performance supercapacitors. However, there was no report about the combination of two technologies to construct electrode materials and their applications in supercapacitors. Herein, a rational Mn doped NiCo sulfide compound with open structure composed of 2D ultra-thin nanosheets was designed via a Mn doping route. In order to further improve the energy storage performance of the resulted product, we adopted a simple electrochemical activation strategy to reconstruct it. It was found that the reconstructed sample not only exhibited an irreversible evolution of structure (from 2D sheet to 3D channel), but also the phase transformation (from metal sulfide to metal hydroxide). Benefiting from the stable 3D curved structure with numerous channels, multitudinous charge transfer provided by numerous valence states of metals and copious active sites by low crystalline state, the in-situ self-reconstructed sample exhibited superior capacitance. In details, the optimized product delivered excellent specific capacitance of 1462C g-1 (3655F/g) at 1 A g-1 and high rate capability of 66 % even at 5 A g-1. Moreover, the corresponding assembled asymmetric supercapacitor exhibited an excellent energy density of 141.8 Wh kg-1 at a power density of 850.1 W kg-1, and the capacitance retention rate was 96.6 % even after 5000 cycles, which was distinctly superior than thoseofthe previous similarmaterialsreported. In a word, this work provided a feasible and effective strategy to construct 3D Mn doped NiCo hydroxide electrode materials toward high-performance supercapacitors.
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Affiliation(s)
- Faxue Lu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China
| | - Yajun Ji
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China.
| | - Dong Shi
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China
| | - Junnan Yao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China
| | - Lijun Pei
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Road 334#, 200093 Shanghai, China
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Ma N, Zhong PL, Dang JJ, Liu YF, Shi D, Cai S, Dong YH, Hu PJ, Ma J, Song Y. [Perceived exercise benefits and barriers and their association with physical activity time in Chinese Han children and adolescents aged 9 to 18 years]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:422-429. [PMID: 36942337 DOI: 10.3760/cma.j.cn112338-20220720-00647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Objective: To analyze the perceived exercise benefits and barriers and their association with physical activity time in Chinese Han children and adolescents aged 9-18 years. Methods: Data were extracted from the 2019 Chinese National Survey on Students' Constitution and Health and a total of 163 656 children and adolescents aged 9-18 years in Han ethnic group were included in the analysis. Mann-Whitney U test and Kruskal-Wallis test were used to compare the perceived exercise benefits score, perceived exercise barriers score and perceived exercise benefits to barriers ratio in the children and adolescents with different demographic characteristics and physical activity time. The differences in physical activity time in subgroups were compared with χ2 tests. log-binomial regression model was used to evaluate the association between physical activity time and perceived exercise benefits and barriers. Results: The M (Q1,Q3) of the perceived exercise benefits score, perceived exercise barriers score, and perceived exercise benefits to barriers ratio in the children and adolescents were 4.11 (3.78, 4.78), 2.70 (2.10, 3.20) and 1.55 (1.22, 2.07), respectively. Children and adolescents living in urban area, boys, those at younger age and those with physical activity time ≥1 hour had higher perceived exercise benefits score and perceived exercise benefits to barriers ratio, but lower perceived exercise barriers score (all P<0.001). The prevalence of physical activity time ≥1 hour was 41.4% in the children and adolescents. In the log-binomial model with two variables of perceived exercise benefits score and perceived exercise barriers score, for each 1-point increase in the perceived exercise benefits, the possibility of physical activity time ≥1 hour increased by 11% (OR=1.11, 95%CI: 1.10-1.12), and for each 1-point increase in the perceived exercise barriers, the possibility of physical activity time ≥1 hour decreased by 15% (OR=0.85, 95%CI: 0.84-0.85). In the log-binomial model with variable of perceived exercise benefits to barriers ratio, for each 1-point increase in the perceived exercise benefits to barriers ratio, the possibility of physical activity time ≥1 hour increased by 12% (OR=1.12, 95%CI: 1.11-1.12). Conclusion: The perceived exercise benefits and barriers are significantly associated with physical activity time in children and adolescents in China.
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Affiliation(s)
- N Ma
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - P L Zhong
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J J Dang
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y F Liu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - D Shi
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - S Cai
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y H Dong
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - P J Hu
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - J Ma
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
| | - Y Song
- Institute of Child and Adolescent Health, Peking University/School of Public Health, Peking University, Beijing 100191, China
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Dong YH, Chen L, Liu JY, Ma T, Zhang Y, Chen MM, Zhong PL, Shi D, Hu PJ, Li J, Dong B, Song Y, Ma J. [Epidemiology and prediction of overweight and obesity among children and adolescents aged 7-18 years in China from 1985 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:11-19. [PMID: 36854438 DOI: 10.3760/cma.j.cn112150-20220906-00881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Objective: To analyze and predict the epidemic trend of overweight and obesity among children and adolescents aged 7-18 years in China from 1985 to 2019. Methods: Data were collected from the Chinese National Survey on Students Constitution and Health in 1985, 1995, 2000, 2005, 2010, 2014, and 2019 with the sample size of 409 945, 204 931, 209 209, 234 420, 215 317, 214 353, and 212 711, respectively. Overweight and obesity were evaluated according to the "classification standard of the weight index value of overweight and obesity screening for Chinese school-age children and adolescents" of the Working Group on Obesity in China (WGOC). The detection rate and average annual growth rate of overweight and obesity, and single obesity among children and adolescents aged 7-18 years were calculated, and ArcGis10.6 software was used to analyze the difference in the prevalence of overweight and obesity among children and adolescents in different regions in 2019. Polynomial regression function was used to fit the prevalence and average annual growth rate of overweight and obesity, and single obesity among children and adolescents from 1985 to 2019, and to predict the prevalence of overweight and obesity and single obesity among children and adolescents in China. Results: In 2019, the total prevalence of overweight and obesity among children and adolescents aged 7-18 years in China was 23.4%, and the prevalence of single obesity was 9.6%. The prevalence of overweight and obesity among urban children and adolescents was higher than that in rural areas (25.4% vs. 21.5%), and the prevalence in boys was higher than that in girls (28.4% vs. 18.4%) (both P values<0.001). In 2019, there was a large regional disparity in the prevalence of overweight and obesity in different provinces, with the lowest in Guangdong (12.2%) and the highest in Shandong (38.9%), and the high epidemic areas were mainly concentrated in North China and Northeast China. From 1985 to 2019, the prevalence of overweight and obesity among children and adolescents aged 7-18 years in China increased from 1.2% to 23.4%, with an increase of 18.1 times, while the prevalence of obesity alone increased from 0.1% to 9.6%, with an increase of 75.6 times. The prevalence of overweight and obesity in urban boys, urban girls, rural boys and rural girls increased from 1.3%, 1.5%, 0.5%, and 1.6% in 1985 to 31.2%, 19.4%, 25.6%, and 17.4% in 2019, with an increase of 22.3, 11.7, 54.2, and 10.1 times, respectively. According to the prediction model, the prevalence of overweight and obesity among children and adolescents aged 7-18 years in China will increase from 23.4% in 2019 to 32.7% in 2030, and the prevalence of obesity alone will increase from 9.6% in 2019 to 15.1% in 2030. The growth of rural children and adolescents is obvious. By 2025, the prevalence of overweight and obesity among rural children and adolescents in China will comprehensively exceed that of urban, and there will be an "urban-rural reversal" phenomenon. At the same time, the prevalence of children's obesity in China's low, medium and high epidemic areas will also continue to increase. By 2035, the prevalence of overweight and obesity among children and adolescents in medium epidemic areas will exceed that in high epidemic areas, and there will be a "provincial reversal" phenomenon. Conclusion: From 1985 to 2019, the overweight and obesity of children and adolescents in China will continue to grow rapidly with large regional differences.
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Affiliation(s)
- Y H Dong
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - L Chen
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - J Y Liu
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - T Ma
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - Y Zhang
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - M M Chen
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - P L Zhong
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - D Shi
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - P J Hu
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - J Li
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - B Dong
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - Y Song
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - J Ma
- School of Public Health & Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
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20
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Liu JY, Zhong PL, Ma N, Shi D, Chen L, Dong YH, Dong B, Chen TJ, Li J, Song Y, Ma J, Hu PJ. [Prevalence trend of malnutrition among Chinese Han children and adolescents aged 7-18 years from 2010 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:27-35. [PMID: 36854439 DOI: 10.3760/cma.j.cn112150-20220914-00897] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Objective: To analyze the prevalence trend of malnutrition among Chinese Han children and adolescents aged 7-18 years from 2010 to 2019. Methods: Based on the data from the Chinese National Surveys on Students' Constitution and Health in 2010, 2014 and 2019, about 215 102, 214 268 and 212 713 Han students aged 7-18 years were included in this study. According to the National Screening Standard for Malnutrition of School-age Children and Adolescents, the detection rate of malnutrition among Chinese Han children and adolescents aged 7-18 was calculated, and the prevalence trend of malnutrition from 2010 to 2019 was analyzed. Results: In 2019, the detection rate of malnutrition among Chinese Han students aged 7-18 years was 8.64% (18 381/212 713), of which the rate of growth retardation, moderate-to-severe wasting and mild wasting was 0.50% (1 062/212 713), 3.25% (6 914/212 713) and 4.89% (10 405/212 713), respectively. In 2019, the detection rate of malnutrition in these boys was higher than that of girls (9.97% vs. 7.31%), and the detection rate in rural areas was higher than that in cities (9.30% vs. 7.98%). The detection rates were 9.74% (5 252/53 916), 8.17% (4 408/53 937), 7.29% (3 885/53 310), and 9.38% (4 836/51 550) in 7-9, 10-12, 13-15, and 16-18 years groups, and 8.14% (6 563/80 618), 7.61% (4 237/55 694) and 9.92% (7 581/76 401) in the eastern, central, and western regions. Malnutrition among students in China was mainly caused by mild wasting, and the detection rate of growth retardation accounted for only 5.78% (1 062/18 381). Malnutrition was mostly concentrated in the southwest region, and the rate was relatively low in eastern provinces. In three surveys from 2010 to 2019, the detection rate of malnutrition among Han students aged 7-18 in China decreased gradually, and the differences were statistically significant (P<0.05). Among them, the detection rates in western rural areas decreased significantly, as well as the gap between urban and rural areas. Compared with that in 2014, the detection rate of malnutrition in Shandong, Hunan, Qinghai and Hainan provinces in 2019 decreased significantly (P<0.05). Conclusion: In 2019, the malnutrition of Chinese children and adolescents aged 7-18 years is dominated by wasting malnutrition. The detection rate shows a downward trend from 2010 to 2019, with regional differences.
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Affiliation(s)
- J Y Liu
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - P L Zhong
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - N Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - D Shi
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - L Chen
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - Y H Dong
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - B Dong
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - T J Chen
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - J Li
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - Y Song
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - J Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
| | - P J Hu
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China
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21
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Ma N, Shi D, Cai S, Dang JJ, Zhong PL, Liu YF, Li J, Dong YH, Hu PJ, Dong B, Chen TJ, Song Y, Ma J. [Trends of age of menarche among Chinese Han girls aged 9 to 18 years from 2010 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:36-41. [PMID: 36854435 DOI: 10.3760/cma.j.cn112150-20220805-00872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Objective: To analyze the trends of the age of menarche among Chinese Han girls aged 9 to 18 years from 2010 to 2019. Methods: Data were extracted from the Chinese National Surveys on Students' Constitution and Health in 2010, 2014 and 2019. A total of 253 037 Han girls aged 9 to 18 years with complete data on menarche were selected in this study. They were asked one-on-one about their menstrual status, age and residence information. The median age of menarche was estimated by probability regression. U tests were used to compare the difference in median age at menarche in different years. Results: The median age at menarche (95%CI) among Chinese Han girls was 12.47 (12.09-12.83) years in 2010, 12.17 (11.95-12.38) years in 2014 and 12.05 (10.82-13.08) years in 2019, respectively. Compared with that in 2010, the median age at menarche in 2019 decreased by 0.42 years (U=-77.27, P<0.001). The annual average changes were-0.076 years from 2010 to 2014 (U=-57.19, P<0.001) and-0.023 years from 2014 to 2019 (U=-21.41, P<0.001), respectively. The average annual changes in urban areas in the periods of 2010 to 2014 and 2014 to 2019 were-0.071 years and 0.006 years, respectively, while those in rural areas were-0.082 years and-0.053 years, respectively. The average annual changes in the regions of north, northeast, east, south central, southwest and northwest were-0.064, -0.099, -0.091, -0.080, -0.096 and-0.041 years in the period of 2010 to 2014 and 0.001, -0.040, -0.002, -0.005, -0.043 and-0.081 years in the period of 2014 to 2019. Conclusion: The age of menarche among Chinese Han girls aged 9 to 18 years shows an advanced trend from 2010 to 2019, and the trends in urban and rural areas and different regions have different characteristics.
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Affiliation(s)
- N Ma
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - D Shi
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - S Cai
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - J J Dang
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - P L Zhong
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - Y F Liu
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - J Li
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - Y H Dong
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - P J Hu
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - B Dong
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - T J Chen
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - Y Song
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
| | - J Ma
- Institute of Child and Adolescent Health/School of Public Health, Peking University, Beijing, 100191
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Zhong PL, Ma N, Liu YF, Dang JJ, Shi D, Cai S, Chen L, Liu JY, Dong YH, Dong B, Hu PJ, Ma J, Song Y. [Trend of the detection rate of myopia among Chinese Han children and adolescents aged 7-18 years from 2010 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:20-26. [PMID: 36854441 DOI: 10.3760/cma.j.cn112150-20221008-00964] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Objective: To analyze the trend of the detection rate of myopia among Chinese Han children and adolescents aged 7-18 years from 2010 to 2019. Methods: Data from the Chinese National Survey on Students' Constitution and Health in 2010, 2014 and 2019 were used, and about 213 833, 212 742 and 209 942 Han students aged 7-18 years were included in this study. The χ² test was used to compare the differences in the prevalence of myopia among the subgroups in the survey year, and logistic regression was used to compare the differences in the prevalence of myopia between different years. A curve-fitting method was used to obtain the growth rate of myopia among Han Chinese students from 2010 to 2019, and the differences in the change of myopia between different age groups were analyzed. Results: In 2019, the overall detection rate of myopia among Chinese Han children and adolescents aged 7-18 was 60.1%. The detection rate of urban students (62.7%) was higher than that of rural students (57.4%) and the detection rate of girls (63.5%) was higher than that of boys (56.7%). In 2019, the regional disparities were large in the detection rate of myopia in various provinces, with the lowest in Guizhou (49.6%) and the highest in Zhejiang (71.3%). The detection rate of myopia showed an upward trend from 2010 to 2019, from 55.5% in 2010 to 57.1% in 2014, and finally to 60.1% in 2019. The gap in the detection rate of myopia between urban and rural children and adolescents gradually shrank. The average annual growth rate of myopia detection rate from 2014 to 2019 was 0.6 percentage points per year, higher than that from 2010 to 2014 about 0.4 percentage points per year. The peak age of the growth rate of myopia detection rate decreased from 12 years in 2010 to 10 years in 2014, and finally to 7 years in 2019. Conclusions: The detection rate of myopia among Chinese Han children and adolescents is still at a high level, and the peak age of the growth rate of myopia detection rate continues to advance.
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Affiliation(s)
- P L Zhong
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - N Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - Y F Liu
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - J J Dang
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - D Shi
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - S Cai
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - L Chen
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - J Y Liu
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - Y H Dong
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - B Dong
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - P J Hu
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - J Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
| | - Y Song
- Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, 100191
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Shi D, Ma N, Liu YF, Dang JJ, Zhong PL, Cai S, Chen L, Dong YH, Hu PJ, Song Y, Ma J, Li J. [Long-term trend of the age of spermarche and its association with nutritional status among Chinese Han boys aged 11-18 from 2010 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:42-48. [PMID: 36854437 DOI: 10.3760/cma.j.cn112150-20220905-00870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Objective: To analyze the long-term trend of the age of spermarche among Chinese Han boys aged 11 to 18 from 2010 to 2019 and its association with nutritional status. Methods: The data from Chinese National Surveys on Students' Constitution and Health in 2010, 2014 and 2019 were used. The age, residence and spermarche of the participants were collected by questionnaire, and their height and weight were measured. A total of 184 633 Han boys aged 11‒18 years with complete data on spermarche, height, and weight were included in this study. The probability regression method was used to calculate the median age (95%CI) at spermarche in different areas, and the trend of age at spermarche in different groups was compared. The multivariate logistic regression model was used to analyze the association between nutritional status and spermarche of Chinese Han boys aged 11‒18 years. Results: The median age of spermarche (95%CI) was 13.85 (13.45-14.22) years old among Chinese Han boys aged 11‒18 years in 2019, with 0.18 years earlier than that in 2010. The median age at spermarche in urban and rural boys was 13.89 and 13.81 years, respectively. Compared with that in 2010, the age at spermarche in urban and rural boys was 0.08 and 0.27 years earlier, respectively. After adjusting for age, province and urban/rural areas, compared with normal weight, spermarche was negatively associated with wasting and positively associated with overweight and obesity, with OR (95%CI) about 0.73 (0.67-0.80), 1.09 (1.02-1.17) and 1.09 (1.01-1.18), respectively. Conclusion: The age of spermarche generally shows an advanced trend among Chinese Han boys and is associated with nutritional status.
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Affiliation(s)
- D Shi
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - N Ma
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - Y F Liu
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - J J Dang
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - P L Zhong
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - S Cai
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - L Chen
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - Y H Dong
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - P J Hu
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - Y Song
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - J Ma
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
| | - J Li
- School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China
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Chen L, Zhang Y, Ma T, Liu JY, Shi D, Zhong PL, Ma N, Dong YH, Dong B, Song Y, Ma J. [Prevalence trend of high normal blood pressure and elevated blood pressure in Chinese Han children and adolescents aged 7-17 years from 2010 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:49-57. [PMID: 36854436 DOI: 10.3760/cma.j.cn112150-20220901-00859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Objective: To investigate the prevalence trend of high normal blood pressure and elevated blood pressure in children and adolescents aged 7 to 17 years in China from 2010 to 2019. Methods: Students aged 7-17 years were selected from the Chinese National Survey on Students' Constitution and Health from 2010 to 2019. High normal blood pressure and elevated blood pressure were determined according to the "Reference of screening for elevated blood pressure among children and adolescents aged 7-18 years" (WS/T 610-2018). The Chi-square test was performed to determine whether there was a difference in the prevalence of high normal blood pressure and elevated blood pressure by gender, residence and age group. Results: In 2019, the prevalence of high normal blood pressure in children and adolescents aged 7-17 years was 15.3% (29 855/195 625), which was higher in boys (20.2%, 19 779/97 847) and rural areas (15.4%, 15 066/97 567) than that in girls (10.3%, 10 076/97 778) and urban areas (15.1%, 14 789/98 058), respectively (all P<0.05). The prevalence of elevated blood pressure was 13.0% (25 377/195 625), which was higher in girls (13.2%, 12 925/97 778) and rural areas (14.1%, 13 753/97 567) than that in boys (12.7%, 12 452/97 847) and urban areas (11.9%, 11 624/98 058) (all P<0.05). From 2010 to 2019, the prevalence of high normal blood pressure showed an increasing trend, with an annual average growth rate from 1.14% to 3.18%. The overall prevalence of elevated blood pressure also showed an increasing trend from 2010 to 2019 but decreased in 2014. The annual average growth rate of elevated blood pressure was-1.07% from 2010 to 2014 and 9.33% from 2014 to 2019. About 17 provinces had an increasing trend in the prevalence of elevated blood pressure from 2010 to 2014, and 22 provinces with an increasing trend from 2014 to 2019. There were obvious regional differences in the annual average growth rate of the prevalence of high normal blood pressure and elevated blood pressure. The regions with the highest annual average growth rate of the prevalence of high normal blood pressure were the Northeast (5.47%) from 2010 to 2014 and the Western region (5.21%) from 2014 to 2019. For elevated blood pressure, the Northeast had the highest annual average growth rate from 2010 to 2014 (12.35%), while the Central (15.79%) and Western (12.87%) had the highest growth rate from 2014 to 2019. Conclusion: From 2010 to 2019, the prevalence of high normal blood pressure and elevated blood pressure in Chinese Han children and adolescents aged 7 to 17 shows an increasing trend, with regional disparities.
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Affiliation(s)
- L Chen
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - Y Zhang
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - T Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - J Y Liu
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - D Shi
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - P L Zhong
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - N Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - Y H Dong
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - B Dong
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - Y Song
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
| | - J Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University/National Health Commission Key Laboratory of Reproductive Health, Beijing 100191, China
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Yao J, Ji Y, Lu F, Shi D, Pei L. Facial route for high mass loading amorphous NiCo-MOF as high-performance electrode materials toward asymmetric supercapacitor. NEW J CHEM 2023. [DOI: 10.1039/d2nj06210k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Herein, amorphous NiCo-MOF with an ultra-high mass loading (10.3 mg cm−2) and an ultra-thick plate structure had been achieved via one-step solvothermal method. Moreover, the corresponding assembled asymmetric supercapacitor depicted...
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Meng P, Wu Y, Bian R, Pan E, Dong B, Zhao X, Chen J, Wu L, Sun Y, Fu Q, Liu Q, Shi D, Zhang Q, Zhang YW, Liu Z, Liu F. Sliding induced multiple polarization states in two-dimensional ferroelectrics. Nat Commun 2022; 13:7696. [PMID: 36509811 PMCID: PMC9744910 DOI: 10.1038/s41467-022-35339-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 11/29/2022] [Indexed: 12/15/2022] Open
Abstract
When the atomic layers in a non-centrosymmetric van der Waals structure slide against each other, the interfacial charge transfer results in a reversal of the structure's spontaneous polarization. This phenomenon is known as sliding ferroelectricity and it is markedly different from conventional ferroelectric switching mechanisms relying on ion displacement. Here, we present layer dependence as a new dimension to control sliding ferroelectricity. By fabricating 3 R MoS2 of various thicknesses into dual-gate field-effect transistors, we obtain anomalous intermediate polarization states in multilayer (more than bilayer) 3 R MoS2. Using results from ab initio density functional theory calculations, we propose a generalized model to describe the ferroelectric switching process in multilayer 3 R MoS2 and to explain the formation of these intermediate polarization states. This work reveals the critical roles layer number and interlayer dipole coupling play in sliding ferroelectricity and presents a new strategy for the design of novel sliding ferroelectric devices.
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Affiliation(s)
- Peng Meng
- grid.54549.390000 0004 0369 4060School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China ,grid.54549.390000 0004 0369 4060Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, China
| | - Yaze Wu
- grid.185448.40000 0004 0637 0221Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Renji Bian
- grid.54549.390000 0004 0369 4060School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Er Pan
- grid.54549.390000 0004 0369 4060School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Biao Dong
- grid.41156.370000 0001 2314 964XSchool of Physics, Nanjing University, Nanjing, China
| | - Xiaoxu Zhao
- grid.11135.370000 0001 2256 9319School of Materials Science and Engineering, Peking University, Beijing, China
| | - Jiangang Chen
- grid.54549.390000 0004 0369 4060School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Lishu Wu
- grid.59025.3b0000 0001 2224 0361School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Yuqi Sun
- grid.54549.390000 0004 0369 4060School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Qundong Fu
- grid.59025.3b0000 0001 2224 0361School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Qing Liu
- grid.54549.390000 0004 0369 4060School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Dong Shi
- grid.54549.390000 0004 0369 4060School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Qi Zhang
- grid.41156.370000 0001 2314 964XSchool of Physics, Nanjing University, Nanjing, China
| | - Yong-Wei Zhang
- grid.185448.40000 0004 0637 0221Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Zheng Liu
- grid.59025.3b0000 0001 2224 0361School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore ,grid.59025.3b0000 0001 2224 0361CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, Singapore, Singapore ,grid.4280.e0000 0001 2180 6431Institute for Functional Intelligent Materials, National University of Singapore, Singapore, Singapore
| | - Fucai Liu
- grid.54549.390000 0004 0369 4060School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China ,grid.54549.390000 0004 0369 4060Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, China
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Vernon I, Owen J, Aylett-Bullock J, Cuesta-Lazaro C, Frawley J, Quera-Bofarull A, Sedgewick A, Shi D, Truong H, Turner M, Walker J, Caulfield T, Fong K, Krauss F. Bayesian emulation and history matching of JUNE. Philos Trans A Math Phys Eng Sci 2022; 380:20220039. [PMID: 35965471 PMCID: PMC9376712 DOI: 10.1098/rsta.2022.0039] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 06/07/2022] [Indexed: 05/21/2023]
Abstract
We analyze JUNE: a detailed model of COVID-19 transmission with high spatial and demographic resolution, developed as part of the RAMP initiative. JUNE requires substantial computational resources to evaluate, making model calibration and general uncertainty analysis extremely challenging. We describe and employ the uncertainty quantification approaches of Bayes linear emulation and history matching to mimic JUNE and to perform a global parameter search, hence identifying regions of parameter space that produce acceptable matches to observed data, and demonstrating the capability of such methods. This article is part of the theme issue 'Technical challenges of modelling real-life epidemics and examples of overcoming these'.
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Affiliation(s)
- I. Vernon
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Department of Mathematical Sciences, Durham University, Durham DH13LE, UK
| | - J. Owen
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Department of Mathematical Sciences, Durham University, Durham DH13LE, UK
| | - J. Aylett-Bullock
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Particle Physics Phenomenology, Durham University, Durham DH13LE, UK
| | - C. Cuesta-Lazaro
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Computational Cosmology, Durham University, Durham DH13LE, UK
| | - J. Frawley
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Advanced Research Computing, Durham University, Durham DH13LE, UK
| | - A. Quera-Bofarull
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Computational Cosmology, Durham University, Durham DH13LE, UK
| | - A. Sedgewick
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Centre for Extragalactic Astronomy, Durham University, Durham DH13LE, UK
| | - D. Shi
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Computational Cosmology, Durham University, Durham DH13LE, UK
| | - H. Truong
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Particle Physics Phenomenology, Durham University, Durham DH13LE, UK
| | - M. Turner
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Advanced Research Computing, Durham University, Durham DH13LE, UK
| | - J. Walker
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Particle Physics Phenomenology, Durham University, Durham DH13LE, UK
| | - T. Caulfield
- Department of Computer Science, Durham University, Durham DH13LE, UK
| | - K. Fong
- Department of Science, Technology, Engineering and Public Policy, University College London, London WC1E6BT, UK
- Department of Anaesthesia, University College London Hospital, London NW12BU, UK
| | - F. Krauss
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Particle Physics Phenomenology, Durham University, Durham DH13LE, UK
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Vernon I, Owen J, Aylett-Bullock J, Cuesta-Lazaro C, Frawley J, Quera-Bofarull A, Sedgewick A, Shi D, Truong H, Turner M, Walker J, Caulfield T, Fong K, Krauss F. Bayesian emulation and history matching of JUNE. Philos Trans A Math Phys Eng Sci 2022; 380:20210039. [PMID: 35965471 DOI: 10.1098/rsta.2021.0039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 12/06/2021] [Indexed: 05/21/2023]
Abstract
We analyze JUNE: a detailed model of COVID-19 transmission with high spatial and demographic resolution, developed as part of the RAMP initiative. JUNE requires substantial computational resources to evaluate, making model calibration and general uncertainty analysis extremely challenging. We describe and employ the uncertainty quantification approaches of Bayes linear emulation and history matching to mimic JUNE and to perform a global parameter search, hence identifying regions of parameter space that produce acceptable matches to observed data, and demonstrating the capability of such methods. This article is part of the theme issue 'Technical challenges of modelling real-life epidemics and examples of overcoming these'.
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Affiliation(s)
- I Vernon
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Department of Mathematical Sciences, Durham University, Durham DH13LE, UK
| | - J Owen
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Department of Mathematical Sciences, Durham University, Durham DH13LE, UK
| | - J Aylett-Bullock
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Particle Physics Phenomenology, Durham University, Durham DH13LE, UK
| | - C Cuesta-Lazaro
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Computational Cosmology, Durham University, Durham DH13LE, UK
| | - J Frawley
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Advanced Research Computing, Durham University, Durham DH13LE, UK
| | - A Quera-Bofarull
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Computational Cosmology, Durham University, Durham DH13LE, UK
| | - A Sedgewick
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Centre for Extragalactic Astronomy, Durham University, Durham DH13LE, UK
| | - D Shi
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Computational Cosmology, Durham University, Durham DH13LE, UK
| | - H Truong
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Particle Physics Phenomenology, Durham University, Durham DH13LE, UK
| | - M Turner
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Advanced Research Computing, Durham University, Durham DH13LE, UK
| | - J Walker
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Particle Physics Phenomenology, Durham University, Durham DH13LE, UK
| | - T Caulfield
- Department of Computer Science, Durham University, Durham DH13LE, UK
| | - K Fong
- Department of Science, Technology, Engineering and Public Policy, University College London, London WC1E6BT, UK
- Department of Anaesthesia, University College London Hospital, London NW12BU, UK
| | - F Krauss
- Institute for Data Science, Durham University, Durham DH13LE, UK
- Institute for Particle Physics Phenomenology, Durham University, Durham DH13LE, UK
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Baranchuk N, Shi D, Apterbach W. 158 The Immediate and Long-Term, Follow-Up Impact of a Brief Educational Intervention on Attending Physicians in the Placement of Ultrasound-Guided Intravenous Catheters. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shi D, Baranchuk N, Apterbach W. 309 The Impact of a Brief Educational Intervention on Attending Physician Comfort During Sonographic Image Acquisition and Image Interpretation. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Yin H, Shi D, Luo R, Liu S, Wan Q, Shi H. Adenocarcinoma invasivo de pulmón con extensión a la aurícula izquierda visualizado por imágenes de PET/TC con18F-FDG. Rev Esp Med Nucl Imagen Mol 2022. [DOI: 10.1016/j.remn.2021.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhang F, Shi D, Wang X, Zhang Y, Duan W, Li Y. β-cryptoxanthin alleviates myocardial ischaemia/reperfusion injury by inhibiting NF-κB-mediated inflammatory signalling in rats. Arch Physiol Biochem 2022; 128:1128-1135. [PMID: 32362203 DOI: 10.1080/13813455.2020.1760302] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The present study aimed to explore the function and molecular mechanism of β-cryptoxanthin on myocardial ischaemia-reperfusion injury (MIRI). Left anterior descending coronary artery ligation with reperfusion was utilised to establish a MIRI rat model. The results indicated that β-cryptoxanthin decreases infarct size and ameliorates signs of pathological histology in MIRI. TNF-α, IL-1β, and IL-6 levels in the serum were attenuated in response to β-cryptoxanthin treatment, serum LDH and CK-MB activities were also decreased. Immunohistochemical analysis and western blot results suggested that p65 was translocated to the nucleus in the I/R injury rat model. However, in the β-cryptoxanthin administration group, p65 expression and activity in the nucleus were decreased in a dose-dependent manner. Furthermore, p-p38 MAPK levels in response to β-cryptoxanthin were decreased, indicating that MAPK is involved in NF-κB signalling pathway regulation. In conclusion, β-cryptoxanthin alleviates myocardial ischaemia/reperfusion injury by inhibiting NF-κB-mediated inflammatory signalling in rats.
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Affiliation(s)
- Feng Zhang
- TEDA International Cardiovascular Hospital, Tianjin, China
| | - Dong Shi
- TEDA International Cardiovascular Hospital, Tianjin, China
| | - Xinduo Wang
- TEDA International Cardiovascular Hospital, Tianjin, China
| | - Yahan Zhang
- Department of Pharmaceutics, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wentao Duan
- TEDA International Cardiovascular Hospital, Tianjin, China
| | - Yuliang Li
- TEDA International Cardiovascular Hospital, Tianjin, China
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Zhong PL, Liu YF, Ma N, Dang JJ, Dong YH, Chen MM, Ma T, Ma Y, Chen L, Shi D, Song Y. [Effect of outdoor time on the incidence of myopia among primary school students in 9 provinces of China]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1099-1106. [PMID: 35856206 DOI: 10.3760/cma.j.cn112338-20211111-00876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: We aimed to assess the effects of outdoor time in preventing incident myopia among primary school students and evaluate its differences among different grades to provide evidence for policy formulation related to myopia prevention. Methods: This study is a cohort study. We investigated 6 046 grade 1 to 5 students in 9 provinces, Jiangsu, Shanghai, Fujian, Shanxi, Henan, Hunan, Gansu, Chongqing, and Guangxi. In 2019, we measured their myopia on site. In 2020, we did a follow-up visit on those students to detect the myopia incidence rate. Information regarding outdoor time and myopia-related behaviors were obtained from a questionnaire within one week of visual acuity measurement in 2020. The chi-square test and Cochran-Armitage trend test compared the differences between groups. The Cox proportional hazards risk model was used to test the relationship between outdoor time and myopia. Results: In 2020, the overall myopia incidence rate of grade 1 to 5 students in the baseline was 27.5%; while 23.0% in grades 1 and 2 students and 31.7% in grades 3 to 5 students, respectively. After controlling for covariates, for students in grade 1 to 2, those with ≥1 hour of outdoor time per day were at 0.76 (95%CI: 0.62-0.93, P=0.008) times risk of being myopia than that of students with <1 hour of outdoor time per day; while for students in grades 3 to 5, an average of ≥3 hours of outdoor time per day was required to have a significant protective effect on myopia. The students with ≥3 hours of outdoor time per day were less likely to be myopia (OR=0.75, 95%CI: 0.61-0.93, P=0.007) than those students with <3 hours of outdoor time per day. Conclusions: For grade 1 and 2 students, 1 hour of outdoor time per day could reduce the incidence of myopia, whereas for grade 3 to 5 students, 3 hours of outdoor time per day could effectively reduce the incidence of myopia. Therefore, the recommendations for outdoor time as myopia prevention should be different for different grades. The higher the grade is, the more outdoor time should be spent to reduce myopia incidence. Moreover, other factors that affect myopia's incidence should be also paid attention to, and a comprehensive approach should be adopted to prevent and control the incidence of myopia.
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Affiliation(s)
- P L Zhong
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - Y F Liu
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - N Ma
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - J J Dang
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - Y H Dong
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - M M Chen
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - T Ma
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - Y Ma
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - L Chen
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - D Shi
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
| | - Y Song
- School of Public Health & Institute of Child and Adolescent Health, Peking University Health Science Center, Beijing 100191, China
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Shi D, Yang M, Zhang B, Hu H, Ai Z, Shao Y, Shen J, Wu Y, Hao X. Design of Boron Carbonitrides-Polyaniline (BCN-PANI) Assembled Supercapacitor with High Voltage Window. J Colloid Interface Sci 2022; 626:544-553. [DOI: 10.1016/j.jcis.2022.06.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/23/2022] [Accepted: 06/25/2022] [Indexed: 10/31/2022]
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Zhong J, Shi D, Wang C, Zhen M, Wei Y, Han Z, Hu W, Chung KH. Assessment of a developed pig cadaver model for teaching crown lengthening surgical procedures. PeerJ 2022; 10:e13421. [PMID: 35669955 PMCID: PMC9166679 DOI: 10.7717/peerj.13421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/20/2022] [Indexed: 01/14/2023] Open
Abstract
Background Information regarding using a pig cadaver model for teaching purposes in dentistry is limited, especially for periodontal surgery procedures. The aim of this study was to assess the feasibility and efficacy of teaching crown lengthening surgical procedures using a prepared pig cadaver model. Methods Mandibles of slaughtered pigs with subgingival crown fracture defects on two premolars and two molars on each side were prepared as periodontal surgery teaching cases. A resident group (n = 20) and an instructor group (n = 18) participated in assessing the efficacy of the model by completing questionnaires before and after training sessions. Data was either assessed descriptively or analyzed statistically with Wilcoxon signed-rank test with the significance level at α = 0.05. Results Results revealed that all the knowledge points showed statistically significant improvements (p < 0.05) except for the procedure to determine the quantity of bone removal during osteotomy procedures. Most residents rated the efficacy of the model obtained with 9.0 out of 10 scale. The data of effectiveness of the pig cadaver model from the instructor group ranged from 7.4 ± 1.4 to 9.0 ± 1.0. Conclusion Results of this study support feasibility in using prepared pig cadaver models to teach crown lengthening surgical procedures to postgraduates.
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Affiliation(s)
- Jinsheng Zhong
- Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Dong Shi
- Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Cui Wang
- Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Min Zhen
- Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yiping Wei
- Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Ziyao Han
- Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Wenjie Hu
- Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China,NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing, Beijing, China
| | - Kwok-Hung Chung
- Department of Restorative Dentistry, University of Washington, Seattle, United States of America
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Ji L, Zhang L, Shi D, Peng X, Li J, zhang Y, Xu T, Li L. Mechanism and process for the extraction of lithium from the high magnesium brine with N,N-bis(2-ethylhexyl)-2-methoxyacetamide in kerosene and FeCl3. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.05.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Niu Y, Peng X, Li J, Zhang Y, Song F, Shi D, Li L. Recovery of Li2CO3 and FePO4 from spent LiFePO4 by coupling technics of isomorphic substitution leaching and solvent extraction. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Xu J, Xia J, Zhang X, Zhou C, Shi D, Chen H, Wu T, Li Q, Ding H, Zhou Y, Wu Y. Exchange-Torque-Triggered Fast Switching of Antiferromagnetic Domains. Phys Rev Lett 2022; 128:137201. [PMID: 35426702 DOI: 10.1103/physrevlett.128.137201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/27/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
The antiferromagnet is considered to be a promising hosting material for the next generation of magnetic storage due to its high stability and stray-field-free property. Understanding the switching properties of the antiferromagnetic (AFM) domain state is critical for developing AFM spintronics. By utilizing the magneto-optical birefringence effect, we experimentally demonstrate the switching rate of the AFM domain can be enhanced by more than 2 orders of magnitude through applying an alternating square-wave field on a single crystalline Fe/CoO bilayer. The observed extraordinary speed can be much faster than that triggered by a constant field with the same amplitude. The effect can be understood as the efficient suppression of the pinning of AFM domain walls by the strong exchange torque triggered by the reversal of the Fe magnetization, as revealed by spin dynamics simulations. Our finding opens up new opportunities to design the antiferromagnet-based spintronic devices utilizing the ferromagnet-antiferromagnet heterostructure.
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Affiliation(s)
- Jia Xu
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
- Institute of Physics, Shaanxi University of Technology, Hanzhong 723001, China
| | - Jing Xia
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
- College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610068, China
| | - Xichao Zhang
- Department of Electrical and Computer Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Chao Zhou
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
- Institute of Physics, Shaanxi University of Technology, Hanzhong 723001, China
| | - Dong Shi
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
| | - Haoran Chen
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
| | - Tong Wu
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
| | - Qian Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Haifeng Ding
- National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, China
| | - Yan Zhou
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Yizheng Wu
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
- Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
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Chang WY, Zhang YF, Wang J, Shi D, Jiang XQ, Ren XK, Yang S, Chen EQ. Competition of Lamellar Crystal and Smectic Liquid Crystal in Precise Polyethylene Derivative Bearing Mesogenic Side-Chains. CCS Chem 2022. [DOI: 10.31635/ccschem.021.202000614] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Wen-Ying Chang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
| | - Yan-Fang Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
| | - Jing Wang
- South China Advanced Institute for Soft Matter Science, South China University of Technology, Guangzhou 510640
| | - Dong Shi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
| | - Xu-Qiang Jiang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
| | - Xiang-Kui Ren
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350
| | - Shuang Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
| | - Er-Qiang Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
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Sadiq M, Shi D, Liang J. A robust occlusion-adaptive attention-based deep network for facial landmark detection. APPL INTELL 2022. [DOI: 10.1007/s10489-021-02848-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Zheng R, Teng W, Hu Y, Hou X, Shi D, Tian X, Scullion J, Wu J. Cadmium uptake by a hyperaccumulator and three Pennisetum grasses with associated rhizosphere effects. Environ Sci Pollut Res Int 2022; 29:1845-1857. [PMID: 34363165 DOI: 10.1007/s11356-021-15043-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Pennisetum grasses (P. purpureum Schumach. 'Purple', P. alopecuroides (L.) Spreng. 'Liren' and P. alopecuroides (L.) Spreng. 'Changsui'), and a cadmium (Cd) hyperaccumulator (Thlaspi caerulescens J.Presl & C.Presl), were grown in soil with four Cd addition levels of 0, 2, 20 and 200 mg/kg. Toxicity symptoms were not observed although growth of all plants decreased as Cd addition increased. Shoot bioconcentration factor (BCFS), the translocation factor (TF) and shoot accumulation of Cd for most plants first increased and then declined as Cd concentrations increased. In contrast, the root bioconcentration factor (BCFR) for T. caerulescens declined and root Cd accumulation for T. caerulescens and two P. alopecuroides cultivars increased consistently as Cd levels increased. P. purpureum had the largest biomass with shoot Cd accumulation similar to that of T. caerulescens, despite lower foliar Cd concentration. Although shoot Cd concentrations of two P. alopecuroides cultivars were lower than for P. purpureum, root Cd concentrations were greater. P. purpureum had Cd BCFS and TF (> 1) at 2- and 20-mg/kg Cd addition treatments, similar to T. caerulescens. P. alopecuroides cultivars had Cd BCFR (> 1) and TF (< 1) at all Cd levels. Roots did not affect rhizosphere pH. However, concentrations of acid extractable Cd in rhizosphere soil were lower than those of corresponding non-rhizosphere soil at all Cd levels for T. caerulescens and P. purpureum; T. caerulescens and P. purpureum did not affect less bioavailable Cd fractions. Concentrations of acid extractable Cd in the rhizosphere of the P. alopecuroides cultivars were not reduced at any Cd level. Differences in Cd accumulation among the three Pennisetum grasses were mainly attributable to root biomass and Cd TFs rather than rhizosphere Cd mobility.
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Affiliation(s)
- Ruilun Zheng
- Research & Development Centre for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Wenjun Teng
- Research & Development Centre for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Yanxia Hu
- Research & Development Centre for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Xincun Hou
- Research & Development Centre for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Dong Shi
- Research & Development Centre for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Xiaoxia Tian
- Research & Development Centre for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - John Scullion
- Institute of Biological, Environmental & Rural Sciences, Aberystwyth University, Penglais, Aberystwyth, SY23 3DA, UK
| | - Juying Wu
- Research & Development Centre for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China.
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Liang Z, Tu H, Shi D, Chen F, Jiang H, Shao Y, Wu Y, Hao X. In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High-Temperature Supercapacitor with Excellent Cycling Performance. Small 2021; 17:e2102899. [PMID: 34643040 DOI: 10.1002/smll.202102899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/04/2021] [Indexed: 06/13/2023]
Abstract
Carbon nanomaterials have elicited much research interest in the energy storage field, but most of them cannot be used at high temperatures. Thus, a supercapacitor with high energy and desired stability at high temperatures is urgently required. Herein, BCN nanotubes (BCNNTs) with excellent performance at high temperatures are generated on carbon fibers by optimizing the ratio of B and N. The nanotubes' morphology can effectively alleviate the structural damage caused by the rapid adsorption/desorption of the electrolyte during long-time charge/discharge cycles at high temperatures, thus improving the high-temperature cycle stability. The symmetric supercapacitors that are assembled with the binder-free BCNNT electrode in 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM·BF4 ) exhibited a high areal capacitance of 177.1 mF cm-2 at a current density of 5 mA cm-2 , and capacitance retention is maintained up to 86.1% for 5000 cycles at 100 °C. Moreover, the flexible supercapacitor based on BCNNTs in poly(vinylidenefluoride hexafluoropropylene)/EMIM·BF4 /succinonitrile gel electrolyte also exhibits good volumetric capacitance (1.98 mWh cm-3 at a current density of 5 mA cm-2 ) and cycling stability (92.6% retention after 200 charge/discharge cycles) at a temperature of 100 °C. This work shows that binder-free BCNNTs are promising materials for high-temperature flexible energy storage devices.
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Affiliation(s)
- Zhenyan Liang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Huayao Tu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Dong Shi
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Fuzhou Chen
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Hehe Jiang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Yongliang Shao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
- Department of Materials Science and Engineering, Qilu University of Technology, Jinan, 250353, P. R. China
| | - Yongzhong Wu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
- Department of Materials Science and Engineering, Qilu University of Technology, Jinan, 250353, P. R. China
| | - Xiaopeng Hao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
- Department of Materials Science and Engineering, Qilu University of Technology, Jinan, 250353, P. R. China
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Shi D, Zhao T, Ma T, Pan J. Study on Improving the Precise Machinability of Single Crystal SiC by an Ultrasonic-Assisted Hybrid Process. Materials (Basel) 2021; 14:ma14237320. [PMID: 34885475 PMCID: PMC8658092 DOI: 10.3390/ma14237320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022]
Abstract
Silicon carbide (SiC) devices have become one of the key research directions in the field of power electronics. However, due to the limitation of the SiC wafer growth process and processing capacity, SiC devices, such as SiC MOSFET (Metal-oxide-semiconductor Field-effect Transistor), are facing the problems of high cost and unsatisfied performance. To improve the precise machinability of single-crystal SiC wafer, this paper proposed a new hybrid process. Firstly, we developed an ultrasonic vibration-assisted device, by which ultrasonic-assisted lapping and ultrasonic-assisted CMP (chemical mechanical polishing) for SiC wafer were fulfilled. Secondly, a novel three-step ultrasonic-assisted precise machining route was proposed. In the first step, ultrasonic lapping using a cast iron disc was conducted, which quickly removed large surface damages with a high MRR (material removal rate) of 10.93 μm/min. In the second step, ultrasonic lapping using a copper disc was conducted, which reduced the residual surface defects with a high MRR of 6.11 μm/min. In the third step, ultrasonic CMP using a polyurethane pad was conducted, which achieved a smooth and less damaged surface with an MRR of 1.44 μm/h. These results suggest that the ultrasonic-assisted hybrid process can improve the precise machinability of SiC, which will hopefully achieve high-efficiency and ultra-precision machining.
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Affiliation(s)
- Dong Shi
- College of Mechanical Engineering, Quzhou University, Quzhou 324000, China; (T.Z.); (T.M.)
- Correspondence: ; Tel.: +86-187-5791-0162
| | - Tianchen Zhao
- College of Mechanical Engineering, Quzhou University, Quzhou 324000, China; (T.Z.); (T.M.)
| | - Tengfei Ma
- College of Mechanical Engineering, Quzhou University, Quzhou 324000, China; (T.Z.); (T.M.)
| | - Jinping Pan
- Zhejiang Haina Semiconductor Co., Ltd., Quzhou 324300, China;
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Cao L, Jiang K, Shao Z, Wang Y, Liu S, Lu X, Wu Y, Chen C, Su Z, Wang L, Liu W, Shi D, Cao Z. Synthesis and Anti-Cholinesterase Activity of Novel Glycosyl Benzofuranylthiazole Derivatives. Russ J Org Chem 2021. [DOI: 10.1134/s1070428021090190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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45
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Zhang Y, Li L, Shi D, Song F. Synthesis and application of low-cost layered double hydroxides intercalated by gluconic acid anion for flame retardancy and tensile strength conservation of high filling epoxy resin. J Colloid Interface Sci 2021; 594:791-801. [PMID: 33794401 DOI: 10.1016/j.jcis.2021.03.088] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/09/2021] [Accepted: 03/14/2021] [Indexed: 11/17/2022]
Abstract
Epoxy resin (EP) is a polymer that is widely used in different aspects of life, but its flammability property limits its fields of applications. Most flame retardants at present cannot be applied practically in scale due to their toxicity, incompatibility in polymers, degraded mechanical property or high cost of raw materials and comprehensive preparation process. Layered double hydroxides intercalated by gluconic acid anion (GLDHs) may serve as a new approach. GLDHs with Mg/Al ratio of 3/1 and 2/1 were first coprecipitated with low-cost green reactants, MgCl2·6H2O, AlCl3·6H2O, NaOH and sodium gluconate. Their structures were confirmed by X-ray diffractions (XRD), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FTIR) and elemental analysis; their thermal properties were analyzed by thermo gravimetric analysis (TGA). Composites containing 40 wt.% GLDHs were easily manufactured with normal magnetic stirring without any filler precipitation. The combustion properties of the composites filled with 40 wt.% GLDHs2 are as follows: the limit oxygen index (LOI) could rise to 29.8% from 25.2% of pristine EP; UL-94 can reach V-1 level with total burning time of only 12.1 s without dropping; compared to pristine EP, the heat release rate peak (PHRR) could drop to 30% with heavy decrease in the smoke production rate and CO production rate. Dynamic mechanical thermal analysis (DMA) tests showed that the addition of 40 wt.% GLDHs had little impact on the glass transition temperature of the composites and could slightly improve their rigidity and toughness. Tensile strength of the composites filled with 40 wt.% GLDHs2 was almost close to 88% of the tensile strength of pristine EP. Above all, GLDHs with good compatibility in polymers can serve as a promising environmental friendly and low-cost flame retardant for EP and other heterochain polymers.
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Affiliation(s)
- Yuze Zhang
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, Qinghai, China; Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources, Xining 810008, Qinghai, China; University of Chinese Academy of Sciences, Beijing 10049, China
| | - Lijuan Li
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, Qinghai, China; Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources, Xining 810008, Qinghai, China; Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, China.
| | - Dong Shi
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, Qinghai, China; Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources, Xining 810008, Qinghai, China
| | - Fugen Song
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, Qinghai, China; Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources, Xining 810008, Qinghai, China.
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Chang L, Liu A, Xu J, Xu X, Dai J, Wu R, Yan W, Wang R, Sun Z, Ikegawa S, Jiang Q, Shi D. TDP-43 maintains chondrocyte homeostasis and alleviates cartilage degradation in osteoarthritis. Osteoarthritis Cartilage 2021; 29:1036-1047. [PMID: 33781898 DOI: 10.1016/j.joca.2021.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 03/04/2021] [Accepted: 03/15/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Osteoarthritis (OA) is the most prevalent age-related disorder due to cartilage degradation. Previous studies have identified aberrant chondrocyte homeostasis under extracellular stress as a key pathological mechanism behind cartilage degradation in OA. TDP-43, a DNA/RNA-binding protein has been demonstrated to participate in processing many extracellular stress responses; however, understanding of the role of TDP-43 in OA is limited. This study aims to investigate the role of TDP-43 in chondrocyte homeostasis and cartilage degradation in OA. METHODS The role of TDP-43 during degradation of cartilage is examined by experimental posttraumatic OA animal models and human cartilage specimens. Cartilage degradation is assessed by histological analysis, qPCR, and Western blot. The molecular mechanisms are investigated in vitro using human primary chondrocytes. RESULTS TDP-43 decreases significantly in degenerated cartilage. TDP-43 concentration is positively correlated with IL-1β concentration in synovial fluid derived from OA patients (Pearson r = 0.95, CI (95%) [0.80, 0.99], P < 0.0001). Intra-articular injection of recombinant TDP-43 significantly alleviates cartilage degradation and subchondral bone remodeling in vivo. In vitro mechanistic analyses show that TDP-43 maintains chondrocyte homeostasis under oxidative stress through regulating stress granule dynamics via G3BP1. CONCLUSION The present study indicates that TDP-43 maintains chondrocyte homeostasis under oxidative stress and alleviates cartilage degeneration in osteoarthritis, identifying TDP-43 as a potential target for the diagnosis and treatment of knee OA.
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Affiliation(s)
- L Chang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China; Musculoskeletal Research Laboratory, Department of Orthopedics & Traumatology, The Chinese University of Hong Kong, Hong Kong, China.
| | - A Liu
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - J Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - X Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - J Dai
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - R Wu
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - W Yan
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - R Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - Z Sun
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - S Ikegawa
- Laboratory of Bone and Joint Diseases, Center for Integrative Medical Sciences, RIKEN, Tokyo, Japan.
| | - Q Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - D Shi
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
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Wang YQ, Wang R, Shi D, Lu K, Jin D, Xu L, Fan GH, Shen JK, Gong JP, Qian MH. [Primary malignant peripheral nerve sheath tumor in left orbit: a case report]. Zhonghua Zhong Liu Za Zhi 2021; 43:509-510. [PMID: 33902216 DOI: 10.3760/cma.j.cn112152-20200428-00386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Q Wang
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - R Wang
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - D Shi
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - K Lu
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - D Jin
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - L Xu
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - G H Fan
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - J K Shen
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - J P Gong
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - M H Qian
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
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Chen R, Zhang F, Hua Y, Shi D, Lei X, Xiao H, Wang Y, Ding S, Shen Y, Zhang Y. Total Synthesis of Stemarene and Betaerene Diterpenoids: Divergent Ring-Formation Strategy and Late-Stage C–H Functionalization. CCS Chem 2021. [DOI: 10.31635/ccschem.021.202100821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Renzhi Chen
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
| | - Feng Zhang
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
| | - Yuhui Hua
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
| | - Dong Shi
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
| | - Xin Lei
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
| | - Hongxiu Xiao
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
| | - Yinong Wang
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
| | - Shihao Ding
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
| | | | - Yandong Zhang
- Department of Chemistry, Department of Chemical Biology, and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005
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Tang C, Zhang W, Li H, Li L, Li Z, Cai A, Wang L, Shi D, Yan B. CNN-based qualitative detection of bone mineral density via diagnostic CT slices for osteoporosis screening. Osteoporos Int 2021; 32:971-979. [PMID: 33165630 DOI: 10.1007/s00198-020-05673-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 10/06/2020] [Indexed: 12/15/2022]
Abstract
UNLABELLED The features extracted from diagnostic computed tomography (CT) slices were used to qualitatively detect bone mineral density (BMD) through neural network models, and the evaluation results indicated that it may be a promising approach to perform osteoporosis screening in clinical practice. INTRODUCTION The purpose of this study is to design a novelty diagnostic method for osteoporosis screening by using the convolutional neural network (CNN), which can be incorporated into the procedure of routine CT diagnostic in medical examination thereby improving the osteoporosis diagnosis and reducing the patient burden. METHODS The proposed CNN-based method mainly comprises two functional modules to perform qualitative detection of BMD by analyzing the diagnostic 2D CT slice. The first functional module aims to locate and segment the ROI of diagnostic 2D CT slice, called Mark-Segmentation-Network (MS-Net). The second functional module is used to determine the category of BMD by the features of ROI, called BMD-Classification-Network (BMDC-Net). The diagnostic 2D CT slice of pedicle level in lumbar vertebrae (L1) was selected from 3D CT image in our experiments firstly. Then, the trained MS-Net can get the mark image of input original 2D CT slice, thereby obtain the segmentation image. Finally, the trained BMDC-Net can obtain the probability value of normal bone mass, low bone mass, and osteoporosis by inputting the segmentation image. On the basis of network results, the radiologists can provide preliminary qualitative diagnosis results of BMD. RESULTS Training of the network was performed on diagnostic 2D CT slices of 150 patients. The network was tested on 63 patients. Each patient corresponds to a 2D CT slice. The proposed MS-Net has an excellent segmentation precision on the shape preservation of different lumbar vertebra. The dice index (DI), pixel accuracy (PA), and intersection over union (IOU) of segmentation results are greater than 0.8. The proposed BMDC-Net achieved an accuracy of 76.65% and an area under the receiver operating characteristic curve of 0.9167. CONCLUSIONS This study proposed a novel method for qualitative detection of BMD via diagnostic CT slices and it has great potential in clinical applications for osteoporosis screening. The method can potentially reduce the manual burden to radiologists and diagnostic cost to patients.
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Affiliation(s)
- C Tang
- PLA Strategy Support Force Information Engineering University, No.62 Science Avenue, Zhengzhou, Henan Province, China
| | - W Zhang
- PLA Strategy Support Force Information Engineering University, No.62 Science Avenue, Zhengzhou, Henan Province, China
| | - H Li
- Department of Radiology in Henan Provincial People's Hospital, Zhengzhou, Henan Province, China
| | - L Li
- PLA Strategy Support Force Information Engineering University, No.62 Science Avenue, Zhengzhou, Henan Province, China
| | - Z Li
- PLA Strategy Support Force Information Engineering University, No.62 Science Avenue, Zhengzhou, Henan Province, China
| | - A Cai
- PLA Strategy Support Force Information Engineering University, No.62 Science Avenue, Zhengzhou, Henan Province, China
| | - L Wang
- PLA Strategy Support Force Information Engineering University, No.62 Science Avenue, Zhengzhou, Henan Province, China
| | - D Shi
- Department of Radiology in Henan Provincial People's Hospital, Zhengzhou, Henan Province, China
| | - B Yan
- PLA Strategy Support Force Information Engineering University, No.62 Science Avenue, Zhengzhou, Henan Province, China.
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Zheng RL, Shi D, Liu WJ, Sun GX, Hou XC, Hu YX, Zhu Y, Wu JY. [Uptake and Accumulation of Cadmium and Zinc by Two Energy Grasses: A Field Experiment]. Huan Jing Ke Xue 2021; 42:1158-1165. [PMID: 33742912 DOI: 10.13227/j.hjkx.202008291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The remediation potential of large biomass energy grasses in cadmium-contaminated soil remains ambiguous. A field experiment was carried out in a cadmium-contaminated farmland using two energy grasses and two control plants. The two energy grasses were hybrid pennisetum (Pennisetum americanum×P. purpureum, PAP) and purple elephant grass (P. purpureum 'Purple', PPP), and the two control plants were Iris lactea var. chinensis (ILC) and a cadmium hyperaccumulator, Noccaea caerulescens (NC). The results showed that the aboveground biomass of PAP was the largest among the four plants, and 126 and 36 times that of NC and ILC, respectively, but no significant difference with that of PPP. The concentrations of cadmium and zinc in the shoots and roots of NC were significantly higher than in the other plants. Zinc concentrations in the shoots and roots of ILC were lower than in the other plants, while cadmium concentrations were significantly higher than in PAP and PPP (P<0.05). The amounts of cadmium and zinc accumulated in the shoots of PPP were the highest among the four plants, while cadmium concentrations in the shoots and roots of PPP were significantly lower than in ILC and NC (P<0.05). Cadmium amounts accumulated in PPP shoots were 7.0 and 4.1 times that of ILC and NC, respectively. Zinc amounts accumulated in PPP shoots were 41 and 11 times that of ILC and NC, respectively (P<0.05). Cadmium accumulation in the shoots of PAP was 19.4% lower than in PPP, and zinc accumulation had no significant difference with that of PPP. NC, having a bioconcentration factor of shoot (BCFS) and a translocation factor (TF) for cadmium and zinc both larger than 1, is usable for phytoextraction of soils contaminated by cadmium and zinc. ILC, having a bioconcentration factor of root (BCFR) larger than 1 and a TF lower than 1 for cadmium, is usable for the phytostabilization of soils contaminated by cadmium. PPP, having a BCFR larger than 1 and a TF lower than 1 for zinc, can be used in the phytostabilization of soils contaminated by zinc. Under field conditions, PPP and PAP showed great potential for the extraction and removal of cadmium and zinc from soil due to their large biomass and ability to produce economic benefits, have good application prospects.
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Affiliation(s)
- Rui-Lun Zheng
- Beijing Research & Development Center for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Dong Shi
- Beijing Research & Development Center for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Wen-Ju Liu
- College of Resources and Environment Science, Hebei Agricultural University, Baoding 071001, China
| | - Guo-Xin Sun
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xin-Cun Hou
- Beijing Research & Development Center for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Yan-Xia Hu
- Beijing Research & Development Center for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Yi Zhu
- Beijing Research & Development Center for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Ju-Ying Wu
- Beijing Research & Development Center for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
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