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Ma QM, Tang WB, Li XJ, Chang F, Yin X, Chen ZH, Wu GH, Xia CD, Li XL, Wang DY, Chu ZG, Zhang Y, Wang L, Wu CL, Tong YL, Cui P, Guo GH, Zhu ZH, Huang SY, Chang L, Liu R, Liu YJ, Wang YS, Liu XB, Shen T, Zhu F. [Multicenter retrospect analysis of early clinical features and analysis of risk factors on prognosis of elderly patients with severe burns]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2024; 40:249-257. [PMID: 38548395 DOI: 10.3760/cma.j.cn501225-20230808-00042] [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: 04/02/2024]
Abstract
Objective: To investigate the early clinical characteristics of elderly patients with severe burns and the risk factors on prognosis. Methods: This study was a retrospective case series study. Clinical data of 124 elderly patients with severe burns who met the inclusion criteria and were admitted to the 12 hospitals from January 2015 to December 2020 were collected, including 4 patients from the Fourth People's Hospital of Dalian, 5 patients from Fujian Medical University Union Hospital, 22 patients from Guangzhou Red Cross Hospital of Jinan University, 5 patients from Heilongjiang Provincial Hospital, 27 patients from the First Affiliated Hospital of Naval Medical University, 9 patients from the First Affiliated Hospital of Nanchang University, 10 patients from Affiliated Hospital of Nantong University, 9 patients from Tongren Hospital of Wuhan University & Wuhan Third Hospital, 12 patients from the 924th Hospital of PLA, 6 patients from Zhangjiagang First People's Hospital, 4 patients from Taizhou Hospital of Zhejiang Province, and 11 patients from Zhengzhou First People's Hospital. The patients' overall clinical characteristics, such as gender, age, body mass index, total burn area, full-thickness burn area, inhalation injury, causative factors, whether combined with underlying medical diseases, and admission time after injury were recorded. According to the survival outcome within 28 days after injury, the patients were divided into survival group (89 cases) and death group (35 cases). The following data of patients were compared between the two groups, including the basic data and injuries (the same as the overall clinical characteristics ahead); the coagulation indexes within the first 24 hours of injury such as prothrombin time (PT), activated partial thromboplastin time (APTT), thrombin time, D-dimer, fibrinogen degradation product (FDP), international normalized ratio (INR), and fibrinogen; the blood routine indexes within the first 24 hours of injury such as white blood cell count, platelet count, neutrophil-to-lymphocyte ratio, monocyte count, red blood cell count, hemoglobin, and hematocrit; the organ function indexes within the first 24 hours of injury such as direct bilirubin, total bilirubin, urea, serum creatinine, aspartate aminotransferase, alanine aminotransferase, total protein, albumin, globulin, blood glucose, triglyceride, total cholesterol, alkaline phosphatase, creatine kinase, electrolyte indexes (potassium, sodium, chlorine, calcium, magnesium, and phosphorus in blood), uric acid, myoglobin, and brain natriuretic peptide; the infection and blood gas indexes within the first 24 hours of injury such as procalcitonin, C-reactive protein, pH value, oxygenation index, base excess, and lactate; treatment such as whether conducted with mechanical ventilation, whether conducted with continuous renal replacement therapy, whether conducted with anticoagulation therapy, whether applied with vasoactive drugs, and fluid resuscitation. The analysis was conducted to screen the independent risk factors for the mortality within 28 days after injury in elderly patients with severe burns. Results: Among 124 patients, there were 82 males and 42 females, aged 60-97 years, with body mass index of 23.44 (21.09, 25.95) kg/m2, total burn area of 54.00% (42.00%, 75.00%) total body surface area (TBSA), and full-thickness burn area of 25.00% (10.00%, 40.00%) TBSA. The patients were mainly combined with moderate to severe inhalation injury and caused by flame burns. There were 43 cases with underlying medical diseases. The majority of patients were admitted to the hospital within 8 hours after injury. There were statistically significant differences between patients in the 2 groups in terms of age, total burn area, full-thickness burn area, and inhalation injury, and PT, APTT, D-dimer, FDP, INR, white blood cell count, platelet count, urea, serum creatinine, blood glucose, blood sodium, uric acid, myoglobin, and urine volume within the first 24 hours of injury (with Z values of 2.37, 5.49, 5.26, 5.97, 2.18, 1.95, 2.68, 2.68, 2.51, 2.82, 2.14, 3.40, 5.31, 3.41, 2.35, 3.81, 2.16, and -3.82, respectively, P<0.05); there were statistically significant differences between two groups of patients in whether conducted with mechanical ventilation and whether applied with vasoactive drugs (with χ2 values of 9.44 and 28.50, respectively, P<0.05). Age, total burn area, full-thickness burn area, serum creatinine within the first 24 hours of injury, and APTT within the first 24 hours of injury were the independent risk factors for the mortality within 28 days after injury in elderly patients with severe burns (with odds ratios of 1.17, 1.10, 1.10, 1.09, and 1.27, 95% confidence intervals of 1.03-1.40, 1.04-1.21, 1.05-1.19, 1.05-1.17, and 1.07-1.69, respectively, P<0.05). Conclusions: The elderly patients with severe burns had the injuries mainly from flame burns, often accompanied by moderate to severe inhalation injury and enhanced inflammatory response, elevated blood glucose levels, activated fibrinolysis, and impaired organ function in the early stage, which are associated with their prognosis. Age, total burn area, full-thickness burn area, and serum creatinine and APTT within the first 24 hours of injury are the independent risk factors for death within 28 days after injury in this population.
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Affiliation(s)
- Q M Ma
- Department of Burn Surgery, the First Affiliated Hospital of Naval Medical University, Shanghai 200433, China Department of Critical Care Medicine, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, China
| | - W B Tang
- Department of Burns and Plastic Surgery, Guangzhou Red Cross Hospital of Jinan University, Guangzhou 510220, China
| | - X J Li
- Department of Burns and Plastic Surgery, Guangzhou Red Cross Hospital of Jinan University, Guangzhou 510220, China
| | - F Chang
- Department of Burns and Plastic Surgery, Zhangjiagang First People's Hospital, Zhangjiagang 215600, China
| | - X Yin
- Department of Burns and Plastic Surgery, Zhangjiagang First People's Hospital, Zhangjiagang 215600, China
| | - Z H Chen
- Department of Burns, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - G H Wu
- Department of Burns, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - C D Xia
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X L Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - D Y Wang
- Department of Burns, Tongren Hospital of Wuhan University & Wuhan Third Hospital, Wuhan 430060, China
| | - Z G Chu
- Department of Burns, Tongren Hospital of Wuhan University & Wuhan Third Hospital, Wuhan 430060, China
| | - Y Zhang
- Department of Burns and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - L Wang
- Department of Burns and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - C L Wu
- Department of Burns, Taizhou Hospital of Zhejiang Province, Linhai 317000, China
| | - Y L Tong
- Department of Burns and Plastic Surgery, the 924th Hospital of PLA, Guilin 541002, China
| | - P Cui
- Department of Burns and Plastic Surgery, the 924th Hospital of PLA, Guilin 541002, China
| | - G H Guo
- Medical Center of Burn Plastic and Wound Repair, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Z H Zhu
- Medical Center of Burn Plastic and Wound Repair, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - S Y Huang
- Medical Center of Burn Plastic and Wound Repair, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - L Chang
- Department of Burns and Plastic Surgery, the Fourth People's Hospital of Dalian, Dalian 116031, China
| | - R Liu
- Department of Burns, Heilongjiang Provincial Hospital, Harbin 150036, China
| | - Y J Liu
- Department of Burns, Heilongjiang Provincial Hospital, Harbin 150036, China
| | - Y S Wang
- Department of Burn Surgery, the First Affiliated Hospital of Naval Medical University, Shanghai 200433, China
| | - X B Liu
- Department of Critical Care Medicine, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, China
| | - T Shen
- Department of Critical Care Medicine, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, China
| | - F Zhu
- Department of Critical Care Medicine, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, China
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Bian Z, Guo Y, Zhu ZH, Lv XM, Fu G, Yang Z. [Preliminary results of surgical treatment of fibrous dysplasia of proximal femur in children]. Zhonghua Wai Ke Za Zhi 2021; 59:731-737. [PMID: 34404170 DOI: 10.3760/cma.j.cn112139-20210307-00113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the surgical treatment, clinical effect and revision reasons of children with proximal femoral fibrous dysplasia(FD). Methods: The clinical data of 26 children with polyostotic FD of proximal femur who underwent surgery at Department of Pediatric Orthopaedics, Beijing Jishuitan Hospital from June 2016 to June 2018 were retrospectively analyzed. There were 18 males and 8 females with a mean age of 9.2 years (range:5 to 16 years).One of them was McCune Albright syndrome. Fifteen cases were in first operation and 11 cases were in revision operation. The operation methods and results were reviewed,and the causes of revision were analyzed. Results: Among the 15 children who underwent the first operation,13 cases underwent osteotomy or fracture reduction and interlocking intramedullary nail(IMN) fixation;One case underwent valgus osteotomy and pediatric hip plate(PHP)internal fixation;One case underwent valgus osteotomy+lesion curettage+allogeneic bone graft+PHP fixation. Among the 11 children who underwent revision surgery,9 cases were treated with IMN fixation,1 case with PHP fixation,and 1 case with PHP fixation+allogeneic bone graft. The causes of revision included distal fixation failed in 6 cases,proximal fixation failed in 3 cases,plate fixation failed in 5 cases,and recurrence occurred after curettage and artificial bone graft in 2 cases. Patients were followed up for 1.4 years(range:1.0 to 3.5 years) after recent operation. The osteotomy or fracture healed well with good deformity correction. Postoperative complications included infection in 1 case and local bone partial resorption in 1 case. Conclusions: Osteotomy combined with rigid internal fixation is an effective surgical treatment for fibrous dysplasia of proximal femur in children. Internal fixation should cover the whole length of lesion. Intramedullary nail is the most common choice. Because the growth of height and the progress of the disease itself,this deformity is prone to recur in children,needing closely follow-up after operation.
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Affiliation(s)
- Z Bian
- Department of Pediatric Orthopaedics,Beijing Jishuitan Hospital,Beijing 100035,China
| | - Y Guo
- Department of Pediatric Orthopaedics,Beijing Jishuitan Hospital,Beijing 100035,China
| | - Z H Zhu
- Department of Pediatric Orthopaedics,Beijing Jishuitan Hospital,Beijing 100035,China
| | - X M Lv
- Department of Pediatric Orthopaedics,Beijing Jishuitan Hospital,Beijing 100035,China
| | - G Fu
- Department of Pediatric Orthopaedics,Beijing Jishuitan Hospital,Beijing 100035,China
| | - Z Yang
- Department of Pediatric Orthopaedics,Beijing Jishuitan Hospital,Beijing 100035,China
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He CH, Liu JW, Zhu ZH, Pan HW, Zheng ZF, He J, Liu ZY, Zhang Y, Wang CL, Rong JJ, Tang Y, Zhang QH. [Establishment and validation of a new predictive equation with multiple risk factors for the development of cardiorenal syndrome type 1 in patients with acute myocardial infarction]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:802-808. [PMID: 34404190 DOI: 10.3760/cma.j.cn112148-20201118-00916] [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: 11/05/2022]
Abstract
Objective: To investigate the independent risk factors of cardiorenal syndrome type 1 (CRS1) in patients with acute myocardial infarction (AMI) and to build a predictive equation for the development of CRS1 in these patients. Method: Consecutive inpatients with AMI, who hospitalized from January 2017 to December 2018 in the Hunan Provincial People's Hospital, were enrolled in this case-control study. Patients were divided into CRS1 group and non-CRS1 group according to the presence or absence of CRS1.The clinical data were collected through the electronic medical record system of Hunan Provincial People's Hospital. The matching process was conducted with a minimum-distance scoring method and a 1∶1 match between the CRS1 group and the no-CRS1 group, the propensity score was calculated through the logistic regression model. Factors with statistically significant differences in univariate analysis were included in the multivariate logistic regression model to analyze the risk factors of AMI patients with CRS1, then the independent risk factors were used to establish a predicting equation for CRS1 by logistic regression function for model building. Area under the curve (AUC) value and the best cut-off value of the combined predictors was determined according to the ROC curve. Python 3.8 software was used to perform 10-fold cross-validation on modeling samples. Results: A total of 942 patients were included, there were 113 cases in CRS1 group and 829 cases in non-CRS1 group. Ultimately, 99 CRS1 patients were successfully matched to 99 non-CRS1 patient using 1∶1 matching. After propensity score matching, the baseline age and sex along with heart rate, mean arterial pressure, percentage of people with a history of diabetes, hypertension, ST-segment elevation myocardial infarction, myocardial ischemia time, angiotensin converting enzyme inhibitors or angiotensin Ⅱ receptor blockers use, and β receptor blocker use were similar between the two groups(all P>0.05). The contrast agent dosage was also similar between the two groups (P=0.266). The peak cardiac troponin I (cTnI), N-terminal pro-brain natriuretic peptide(NT-proBNP), white blood cell count, base estimated glomerular filtration rate (eGFR), albumin and hemoglobin levels were statistically significant between the two groups (all P<0.05). Multivariate logistic regression analysis showed that decreased baseline eGFR, increased NT-proBNP, peak cTnI concentrations and white blood cell count were independent risk factors of CRS1 in AMI patients (all P<0.01).The predicting equation of the combined predictor was established by transforming the logistic model equation, L=0.031×cTnI+0.000 2×NT-proBNP-0.024×eGFR+0.254×white blood cell count, where L represented the combined predictor. ROC curve analysis indicated that the AUC of the peak cTnI, NT-proBNP, baseline eGFR, white blood cell count, and combined predictor were 0.76, 0.85, 0.79, 0.81, and 0.92 respectively (all P<0.05), and the cutoff value of combined predictor was 2.6. The AUC of ROC curve after the model's ten-fold cross validation was 0.89. Conclusions: Decreased baseline eGFR, increased NT-proBNP, peak cTnI concentrations and white blood cell count are the independent risk factors for CRS1 in AMI patients. The combined predictor equation based on the above 4 biomarkers presents a good predictive value for CRS1 in AMI patients.
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Affiliation(s)
- C H He
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - J W Liu
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - Z H Zhu
- Department of Cardiology, Luohe Central Hospital, Luohe 462000, China
| | - H W Pan
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - Z F Zheng
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - J He
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - Z Y Liu
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - Y Zhang
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - C L Wang
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - J J Rong
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - Y Tang
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
| | - Q H Zhang
- Department of Cardiology, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
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Sun Y, Yin MM, Ma LL, Dai XM, Lv LJ, Chen XX, Ye S, Li T, Chen J, Zhao DB, Kong RN, Wei QH, Yang GH, Gong SG, Yang CD, Liu HL, Xue Y, Tang JP, Feng R, Peng A, Qin L, Liu H, Su X, Huang HP, Guan JL, Luo D, Dai SM, Zhao FT, Zhu ZH, Zhang XY, Han J, Wang JY, Xiao CY, Xu HJ, Wu X, He DY, Mao JC, Zhu ZJ, Xue L, Li B, Lin J, Zou JZ, Sun XN, Ding J, Dong ZH, Wang XF, Jun-Ying, Jiang LD. Epidemiology of Takayasu arteritis in Shanghai: A hospital-based study and systematic review. Int J Rheum Dis 2021; 24:1247-1256. [PMID: 34314100 DOI: 10.1111/1756-185x.14183] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 04/21/2021] [Revised: 07/04/2021] [Accepted: 07/10/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Takayasu arteritis (TAK) is a rare large vessel vasculitis, and epidemiological data on TAK are lacking in China. Thus, we designed this study to estimate the TAK prevalence and incidence in residential Shanghai, China. METHODS Data on diagnosed TAK cases aged over 16 years were retrieved from 22 tertiary hospitals in Shanghai through hospital electronic medical record systems between January 1, 2015 and December 31, 2017 to estimate the prevalence and incidence. A systematic literature review based on searches in PubMed, Ovid-Medline, Excerpta Medica Database (EMBASE), Web of Science, and China National Knowledge Infrastructure (CNKI) was performed to summarize TAK distribution across the world. RESULTS In total 102 TAK patients, with 64% female, were identified. The point prevalence (2015-2017) was 7.01 (95% CI 5.65-8.37) cases per million, and the mean annual incidence was 2.33 (1.97-3.21) cases per million. The average age of TAK patients was 44 ± 16 years, with the highest prevalence (11.59 [9.23-19.50] cases per million) and incidence (3.55 [0.72 3.74] cases per million) in the 16 to 34 years population. Seventeen reports were included in the system review, showing that the epidemiology of TAK varied greatly across the world. The incidence and prevalence were both relatively higher in Asian countries, with the prevalence ranging 3.3-40 cases per million and annual incidence ranging 0.34-2.4 cases per million. CONCLUSIONS The prevalence and incidence of TAK in Shanghai was at moderate to high levels among the previous reports. The disease burden varied globally among racial populations.
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Affiliation(s)
- Ying Sun
- Department of Rheumatology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Meng-Meng Yin
- Department of Rheumatology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Li-Li Ma
- Department of Rheumatology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiao-Min Dai
- Department of Rheumatology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Liang-Jing Lv
- Department of Rheumatology, Renji Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xiao-Xiang Chen
- Department of Rheumatology, Renji Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Shuang Ye
- Department of Rheumatology, Renji Hospital South Campus, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Ting Li
- Department of Rheumatology, Renji Hospital South Campus, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jie Chen
- Department of Rheumatology, Renji Hospital South Campus, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Dong-Bao Zhao
- Department of Rheumatology and Immunology, Changhai Hospital, Second Military Medicine University, Shanghai, China
| | - Rui-Na Kong
- Department of Rheumatology and Immunology, Changhai Hospital, Second Military Medicine University, Shanghai, China
| | - Qiang-Hua Wei
- Department of Rheumatology, Shanghai General Hospital, Shanghai, China
| | - Guang-Hui Yang
- Department of Rheumatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Su-Gang Gong
- Department of Cardio-Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Cheng-de Yang
- Department of Rheumatology and Immunology, Shanghai JiaoTong University School of Medicine Affiliated Ruijin Hospital, Shanghai, China
| | - Hong-Lei Liu
- Department of Rheumatology and Immunology, Shanghai JiaoTong University School of Medicine Affiliated Ruijin Hospital, Shanghai, China
| | - Yu Xue
- Department of Rheumatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jian-Ping Tang
- Division of Rheumatology and Immunology, Tongji Hospital of Tongji University School of Medicine, Shanghai, China
| | - Run Feng
- Division of Rheumatology and Immunology, Tongji Hospital of Tongji University School of Medicine, Shanghai, China
| | - Ai Peng
- Department of Nephrology & Rheumatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ling Qin
- Department of Nephrology & Rheumatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hua Liu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xiao Su
- Department of Rheumatology, Shanghai municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hui-Ping Huang
- Department of Rheumatology, Shanghai municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jian-Long Guan
- Department of Rheumatology, Huadong Hospital, Fudan University, Shanghai, China
| | - Dan Luo
- Department of Rheumatology, Huadong Hospital, Fudan University, Shanghai, China
| | - Sheng-Ming Dai
- Department of Rheumatology & Immunology, Shanghai JiaoTong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Fu-Tao Zhao
- Department of Rheumatology and Immunology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China
| | - Zhen-Hang Zhu
- Department of Rheumatology and Immunology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China
| | - Xiao-Yan Zhang
- Department of Renal and Rheumatology, Xinhua Hospital Affiliated To Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jie Han
- Department of Rheumatology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Jia-Yi Wang
- Department of Rheumatology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Chun-Yuan Xiao
- Department of Rheumatology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Hu-Ji Xu
- Department of Rheumatology and Immunology, Changzheng Hospital, Secondary Military Medicine University, Shanghai, China
| | - Xin Wu
- Department of Rheumatology and Immunology, Changzheng Hospital, Secondary Military Medicine University, Shanghai, China
| | - Dong-Yi He
- Department of Rheumatology, Shanghai Guanghua Hospital of Integrated Traditional and Western Medicine, Shanghai, China
| | - Jian-Chun Mao
- Department of Rheumatology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhu-Jing Zhu
- Department of Rheumatology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Luan Xue
- Department of Rheumatology and Immunology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ben Li
- Department of Rheumatology and Immunology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiang Lin
- Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jian-Zhou Zou
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiao-Ning Sun
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jing Ding
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhi-Hui Dong
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiang-Fei Wang
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jun-Ying
- Fudan University Library, Shanghai, China
| | - Lin-di Jiang
- Department of Rheumatology, Zhongshan Hospital, Fudan University, Shanghai, China.,Evidence-Based Medicine Center, Fudan University, Shanghai, China
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Meng HR, Zhao QL, Huang B, Xiao JP, Liu T, Zhu ZH, Gong DX, Wan DH, Huang CR, Ma WJ. [The association between apparent temperature and hand, foot, and mouth disease and its spatial heterogeneity in Guangdong, Anhui and Jilin provinces]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:520-526. [PMID: 34814423 DOI: 10.3760/cma.j.cn112338-20200423-00634] [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: 06/13/2023]
Abstract
Objective: To study the association between apparent temperature (AT) and the incidence of hand,foot, and mouth disease (HFMD) and its spatial heterogeneity in 46 cities in Guangdong, Anhui and Jilin provinces, and provide scientific evidence for the early warning of HFMD. Methods: The data of HFMD incidence and meteorological factors from 2009 to 2018 in Guangdong province, 2009 to 2015 in Anhui province, and 2013 to 2018 in Jilin province were collected. Distributed lag non-linear models were constructed to investigate the association between AT and the incidence of HFMD in 46 cities from three provinces in China. Meta-analysis was used to pool the city-specific estimates, and Meta-regression was applied to analyze the factors that may cause spatial heterogeneity. Results: The relationship between daily AT and the incidence of HFMD in 46 cities appeared nonlinear. The association in Guangdong was similar to that in Jilin, and the risk of HFMD increased with the increase of AT. While the risk of HFMD in Anhui first increased with the increase of AT, and peaked at 18.1 ℃ and then went down. AT on different levels showed different lag impacts and the higher AT showed greater and longer lag impact. The spatial heterogeneity of associations may have been caused by latitude, longitude, average temperature, and average sunshine hours. Conclusions: AT is a comprehensive index to evaluate the association between temperature, relative humidity and wind speed and the incidence of HFMD. Higher AT may increase the risk of HFMD. The AT and HFMD relationship across spatial heterogeneity varies depending on geographic location and meteorological conditions.
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Affiliation(s)
- H R Meng
- School of Public Health, Southern Medical University,Guangzhou 510515,China Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Q L Zhao
- Jilin Provincial Center for Disease Control and Prevention, Changchun 130062, China
| | - B Huang
- Jilin Provincial Center for Disease Control and Prevention, Changchun 130062, China
| | - J P Xiao
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - T Liu
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Z H Zhu
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - D X Gong
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - D H Wan
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - C R Huang
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - W J Ma
- School of Public Health, Southern Medical University,Guangzhou 510515,China Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
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Mao J, Lu QQ, Zeng X, Li P, Shi SJ, Li J, Zhu ZH, Xie XB, Lu Q. [Progress in research of allergen detection methods]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:123-129. [PMID: 33455144 DOI: 10.3760/cma.j.cn112150-20200716-01019] [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: 11/05/2022]
Abstract
Allergic diseases have continued to increase year by year causing serious physical and mental injury to patients, families and individuals. This increase has been driven by conventional environmental and nutritional changes but is also created by the continual introduction of food additives into the diet and novel interior decoration materials into the living space. The causes of allergic diseases are complex and diverse, and the medical laboratory often is not be able to identify the allergic trigger; this creates a difficult environment to identify the appropriate clinical treatment for disease prevention and control. Physicians must be able to identify these triggers to help patients avoid the underlying allergenic cause of their disease. This can only be done by actively knowing a patient's medical history, identifying the clinical manifestations of hypersensitivity and utilizing confirmatory testing as an important clinical tool in identifying the allergic source.
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Affiliation(s)
- J Mao
- The First Clinical College of Traditional Chinese Medicine, Hunan University of Chinese Medicine,Changsha 410208,China
| | - Q Q Lu
- The First Clinical College of Traditional Chinese Medicine, Hunan University of Chinese Medicine,Changsha 410208,China
| | - X Zeng
- Laboratory Department of Jiangxi Maternal and Child Health Hospital, Nanchang 330006,China
| | - P Li
- Department of Medical Laboratory and Pathology Center, the First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007,China
| | - S J Shi
- The First Clinical College of Traditional Chinese Medicine, Hunan University of Chinese Medicine,Changsha 410208,China
| | - J Li
- The First Clinical College of Traditional Chinese Medicine, Hunan University of Chinese Medicine,Changsha 410208,China
| | - Z H Zhu
- Department of Medical Laboratory and Pathology Center, the First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007,China
| | - X B Xie
- Department of Medical Laboratory and Pathology Center, the First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007,China
| | - Q Lu
- Department of Clinical Laboratory,Shanghai Traditional Chinese Medicine-Integrated Hospital,Shanghai University of Traditional Chinese Medicine,Shanghai 200082,China
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7
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Meng FH, Zhu ZH, Lei ZH, Zhang XH, Shao L, Zhang HZ, Zhang T. Feasibility of the application of mixed reality in mandible reconstruction with fibula flap: A cadaveric specimen study. J Stomatol Oral Maxillofac Surg 2021; 122:e45-e49. [PMID: 33434746 DOI: 10.1016/j.jormas.2021.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/02/2020] [Accepted: 01/04/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND In recent years, a new technology, mixed reality (MR), has emerged and surpassed the limitations of augmented reality (AR) with its inability to interact with hologram. This study aimed to investigate the feasibility of the application of MR in mandible reconstruction with fibula flap. METHODS Computed tomography (CT) examination was performed for one cadaveric mandible and ten fibula bones. Using professional software Proplan CMF 3.0 (Materialize, Leuven, Belgium), we created a defected mandibular model and simulated the reconstruction design with these 10 fibula bones. The surgical plans were transferred to the HoloLens. We used HoloLens to guide the osteotomy and shaping of the fibular bone. After fixing the fibular segments using the Ti template, all segments underwent a CT examination. Before and after objects were compared for measurements of the location of fibular osteotomies, angular deviation of fibular segments, and intergonial angle distances. RESULTS The mean location of the fibular osteotomies, angular deviation of the fibular segments, and intergonial angle distances were 2.11 ± 1.31 mm, 2.85°± 1.97°, and 7.24 ± 3.42 mm, respectively. CONCLUSION The experimental results revealed that slight deviations remained in the accuracy of fibular osteotomy. With the further development of technology, it has the potential to improve the efficiency and precision of the reconstructive surgery.
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Affiliation(s)
- F H Meng
- Chinese PLA General Hospital, Department of Oral and Maxillofacial Surgery, 100853, Beijing, China
| | - Z H Zhu
- Peking Union Medical College Hospital, Department of Oral and Maxillofacial Surgery, 100730, Beijing, China
| | - Z H Lei
- Peking Union Medical College Hospital, Department of Oral and Maxillofacial Surgery, 100730, Beijing, China
| | - X H Zhang
- Shenzhen Luohu Hospital Group Luohu People's Hospital, Department of Oral and Maxillofacial Surgery, 518020, Shenzhen, China
| | - L Shao
- Beijing Institute of Technology, Optoelectronic College, 100081, Beijing, China
| | - H Z Zhang
- Chinese PLA General Hospital, Department of Oral and Maxillofacial Surgery, 100853, Beijing, China.
| | - T Zhang
- Peking Union Medical College Hospital, Department of Oral and Maxillofacial Surgery, 100730, Beijing, China.
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8
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Zhuang YL, Zhang YT, Li M, Luo M, Zhu ZH, Tan XH, Yi Y, Chen XG, Deng AP, Zheng HZ, Kang M, Song T, Sun LM. [Analysis on the cluster epidemic of coronavirus disease 2019 in Guangdong Province]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:720-725. [PMID: 32842292 DOI: 10.3760/cma.j.cn112150-20200326-00446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Analysis of clustering characteristics of coronavirus disease 2019 (COVID-19) in Guangdong Province. Methods: The COVID-19 cases in Guangdong Province onset from January 1 to February 29, 2020 were collected from Chinese information system for disease control and prevention and Emergency Public Reporting System. Obtain the epidemiological survey data of the cluster epidemic situation, and clarify the scale of cluster epidemic situation, the characteristics of the index cases, family and non-family subsequent cases. Calculate serial interval according to the onset time of the index cases and subsequent cases, secondary attack rate based on the close contacts tracking results, the characteristics of different cases in the clustered epidemic were compared. Results: A total of 283 cluster were collected, including 633 index cases, 239 subsequent cases. Families are mainly clustered, the total number involved in each cluster is in the range of 2-27, M (P25, P75) are 2.0 (2.0, 4.0). During January 15 to February 29, the secondary attack rate is 2.86% (239/8 363) in Guangdong Province, the family secondary attack rate was 4.84% (276/3 697), and the non-family secondary attack rate was 1.32% (61/4 632). According to the reporting trend of the number of cases in Guangdong Province, it can be divided into four stages, the rising stage, the high platform stage, the descending stage and the low level fluctuation period. The secondary attack rate of the four stages were 3.5% (140/3 987), 2.3% (55/2 399), 2.6% (37/1 435), 1.3% (7/542), respectively. The difference was statistically significant (P=0.003). Conclusion: COVID-19 cluster mainly occurs in families in Guangdong Province. The scale of the clustered epidemic was small; the serial interval was short; and the overall secondary attack rate was low.
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Affiliation(s)
- Y L Zhuang
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Y T Zhang
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - M Li
- Institute of Environment and School Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - M Luo
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Z H Zhu
- Environment and Health Research Office, Guangdong Provincial Institute of Public Health, Guangzhou 511430, China
| | - X H Tan
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Y Yi
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - X G Chen
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - A P Deng
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - H Z Zheng
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - M Kang
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - T Song
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - L M Sun
- Institute of Immunization Programme, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
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Hu JX, He GH, Liu T, Xiao JP, Rong ZH, Guo LC, Zeng WL, Zhu ZH, Gong DX, Yin LH, Wan DH, Zeng LL, Ma WJ. [Risk assessment of exported risk of COVID-19 from Hubei Province]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:362-366. [PMID: 32083409 DOI: 10.3760/cma.j.cn112150-20200219-00142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the exported risk of COVID-19 from Hubei Province and the imported risk in various provinces across China. Methods: Data of reported COVID-19 cases and Baidu Migration Indexin all provinces of the country as of February 14, 2020 were collected. The correlation analysis between cumulative number of reported cases and the migration index from Hubei was performed, and the imported risks from Hubei to different provinces across China were further evaluated. Results: A total of 49 970 confirmed cases were reported nationwide, of which 37 884 were in Hubei Province. The average daily migration index from Hubei to other provinces was 312.09, Wuhan and other cities in Hubei were 117.95 and 194.16, respectively. The cumulative COVID-19 cases of provinces was positively correlated with the migration index derived from Hubei Province, also in Wuhan and other cities in Hubei, with correlation coefficients of 0.84, 0.84, and 0.81. In linear model, population migration from Hubei Province, Wuhan and other cities in Hubei account for 71.2%, 70.1%, and 66.3% of the variation, respectively. The period of high exported risk from Hubei occurred before January 27, of which the risks before January 23 mainly came from Wuhan, and then mainly from other cities in Hubei. Hunan Province, Henan Province and Guangdong Province ranked the top three in terms of cumulative imported risk (the cumulative risk indices were 58.61, 54.75 and 49.62 respectively). Conclusion: The epidemic in each province was mainly caused by the importation of Hubei Province. Taking measures such as restricting the migration of population in Hubei Province and strengthening quarantine measures for immigrants from Hubei Province may greatly reduce the risk of continued spread of the epidemic.
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Affiliation(s)
- J X Hu
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - G H He
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - T Liu
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - J P Xiao
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Z H Rong
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - L C Guo
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - W L Zeng
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Z H Zhu
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - D X Gong
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - L H Yin
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - D H Wan
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - L L Zeng
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - W J Ma
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
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10
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Doaei S, Mosavi Jarrahi SA, Sanjari Moghadam A, Akbari ME, Javadi Kooshesh S, Badeli M, Azizi Tabesh G, Abbas Torki S, Gholamalizadeh M, Zhu ZH, Montazeri F, Mirzaei Dahka S. The effect of rs9930506 FTO gene polymorphism on obesity risk: a meta-analysis. Biomol Concepts 2020; 10:237-242. [PMID: 31855561 DOI: 10.1515/bmc-2019-0025] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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: 08/26/2019] [Accepted: 10/28/2019] [Indexed: 12/28/2022] Open
Abstract
Obesity is associated with polymorphisms of the fat mass and obesity associated gene (FTO). This meta-analysis aimed to investigate the association of the rs9930506 FTO gene polymorphism and obesity. To the best of our knowledge, this study is the first meta-analysis to evaluate the relation between FTO rs9930506 polymorphism and obesity. We searched PubMed, Web of Science, and Embase to identify studies investigating the relations between the rs9930506 FTO gene polymorphism and obesity risk. We pooled adjusted odds ratios (OR) as overall and in continent subgroups. A Fixed-effects model was used to analyze the results of these studies in dominant and recessive models. By examining 3337 obesity cases and 3159 healthy controls, we identified 8 eligible case-control studies. Considering the dominant model of inheritance, there was a relationship between the rs9939506 polymorphism and obesity (OR=1.34 [1.03- 1.74]). The association remained significant in the European subgroup (OR=1.68 [1.2-2.36]), but not in the Asian subgroup. Using the recessive model, we also found a significant relationship when the overall association was investigated (OR=2.47; 95% CI 1.56-3.91). In conclusion, this study identified that the carriers of the risk allele of FTO rs9930506 polymorphism are at higher risk for obesity.
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Affiliation(s)
- S Doaei
- Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht, Iran.,Department of Public Health, School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - S A Mosavi Jarrahi
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - A Sanjari Moghadam
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M E Akbari
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - S Javadi Kooshesh
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M Badeli
- Department of Nutrition, Urmia University of Medical Science, Urmia, Iran
| | - Gh Azizi Tabesh
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - S Abbas Torki
- Department of Nutrition, Faculty of Nutrition Sciences, Shiraz University of MedicalSciences, Shiraz, Iran
| | - M Gholamalizadeh
- Student Research Committee, Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Z H Zhu
- School of Public Health, Peking Union Medical College Beijing, Beijing China
| | - F Montazeri
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - S Mirzaei Dahka
- Student Research Committee, Guilan University of Medical Sciences, Rasht, Iran
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11
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Yu L, Li LL, Yan P, Deng L, Gan XL, Yao XJ, Zhu ZH, Zhang TD. Clinical characteristics of lip infantile haemangiomas and main risk factors for ulceration: an 8-year retrospective study of 69 Chinese infants. J Eur Acad Dermatol Venereol 2020; 34:2135-2139. [PMID: 32118308 DOI: 10.1111/jdv.16331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/18/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Infantile haemangiomas (IHs) involving the lip are of special concern because of the susceptibility of complications, including ulceration, obstruction and disfigurement. The available data for the relationship between their clinical characteristics and ulcerations are limited. OBJECTIVES To describe the clinical characteristics of lip IHs and to evaluate the main risk factors for ulceration. METHODS A retrospective study was designed that included infants with lip IHs during an 8-year period, the clinical data of participants were collected, and univariable and multivariable logistic models were used to determine the relationships between the clinical characteristics of lip IHs and ulcerations. Location, size and type were investigated as potential independent factors influencing the development of ulceration. RESULTS A total of 69 lip IHs were identified including 40 girls and 29 boys. Ulcerations were found in 37 (53.6%) lip IHs. Lip haemangiomas experiencing ulceration had a mean size (SD) of 3.49 (2.82) cm2 compared with 1.08 (0.96) cm2 for those without ulceration. Twenty-eight (52.8%) of the 53 localized haemangiomas and 9 (56.3%) of the 16 segmental haemangiomas experienced ulcerations. Univariable analyses of all investigated factors revealed significant associations of location and size with increased risk of ulceration, and these significant associations remained after adjusting for sex and age [OR 8.61 (95% CI, 2.24-33.13) and 2.62 (95% CI, 1.46-4.72), respectively]. The duration before ulceration was between 4 and 70 days after the occurrence of lip IHs, with a median of 28 (19.41) days. Most ulcers occurred within 45 days of IH occurrence. CONCLUSIONS Ulceration is a common complication of lip IHs at an earlier stage. A swollen with pale or bright crimson appearance of the lip IH surface could be an important signal of subsequent ulceration. Location of the IH on the lower lip and lip IH size are risk factors for the occurrence of ulceration.
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Affiliation(s)
- L Yu
- Department of Dermatology, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - L L Li
- Department of Dermatology, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - P Yan
- Department of Endocrinology, Penglai People's Hospital, Yantai, China
| | - L Deng
- Department of Dermatology, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - X L Gan
- Department of Dermatology, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - X J Yao
- Department of Dermatology, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - Z H Zhu
- Clinical Research Centre, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - T D Zhang
- Department of Dermatology, Zhujiang Hospital of Southern Medical University, Guangzhou, China
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12
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Zhu ZH, Nie KB, Deng KK, Han JG. Fabrication of biodegradable magnesium matrix composite with ultrafine grains and high strength by adding TiC nanoparticles to Mg-1.12Ca-0.84Zn-0.23Mn (at.%) alloy. Mater Sci Eng C Mater Biol Appl 2020; 107:110360. [PMID: 31761225 DOI: 10.1016/j.msec.2019.110360] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 08/26/2019] [Accepted: 10/21/2019] [Indexed: 11/16/2022]
Abstract
Mg-1.12Ca-0.84Zn-0.23Mn (at.%) alloy was reinforced by TiC nanoparticles. After extrusion ultra-fine grains of ∼0.4 μm were caused by Zener pinning effect of nano-sized particles including fine precipitated MgZn2 phases, α-Mn particles and TiC nanoparticles. Yield strength of 423.6 MPa along with ultimate tensile strength of 436.8 MPa could meet biomedical application.
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Affiliation(s)
- Z H Zhu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, PR China
| | - K B Nie
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, PR China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan, 030024, China.
| | - K K Deng
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, PR China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan, 030024, China
| | - J G Han
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, PR China
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13
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Yang LT, Li HB, Yue Q, Ma H, Kang KJ, Li YJ, Wong HT, Agartioglu M, An HP, Chang JP, Chen JH, Chen YH, Cheng JP, Deng Z, Du Q, Gong H, Guo QJ, He L, Hu JW, Hu QD, Huang HX, Jia LP, Jiang H, Li H, Li JM, Li J, Li X, Li XQ, Li YL, Liao B, Lin FK, Lin ST, Liu SK, Liu YD, Liu YY, Liu ZZ, Ma JL, Mao YC, Pan H, Ren J, Ruan XC, Sharma V, She Z, Shen MB, Singh L, Singh MK, Sun TX, Tang CJ, Tang WY, Tian Y, Wang GF, Wang JM, Wang L, Wang Q, Wang Y, Wang YX, Wu SY, Wu YC, Xing HY, Xu Y, Xue T, Yi N, Yu CX, Yu HJ, Yue JF, Zeng XH, Zeng M, Zeng Z, Zhang FS, Zhang YH, Zhao MG, Zhou JF, Zhou ZY, Zhu JJ, Zhu ZH. Search for Light Weakly-Interacting-Massive-Particle Dark Matter by Annual Modulation Analysis with a Point-Contact Germanium Detector at the China Jinping Underground Laboratory. Phys Rev Lett 2019; 123:221301. [PMID: 31868422 DOI: 10.1103/physrevlett.123.221301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Indexed: 06/10/2023]
Abstract
We present results on light weakly interacting massive particle (WIMP) searches with annual modulation (AM) analysis on data from a 1-kg mass p-type point-contact germanium detector of the CDEX-1B experiment at the China Jinping Underground Laboratory. Datasets with a total live time of 3.2 yr within a 4.2-yr span are analyzed with analysis threshold of 250 eVee. Limits on WIMP-nucleus (χ-N) spin-independent cross sections as function of WIMP mass (m_{χ}) at 90% confidence level (C.L.) are derived using the dark matter halo model. Within the context of the standard halo model, the 90% C.L. allowed regions implied by the DAMA/LIBRA and CoGeNT AM-based analysis are excluded at >99.99% and 98% C.L., respectively. These results correspond to the best sensitivity at m_{χ}<6 GeV/c^{2} among WIMP AM measurements to date.
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Affiliation(s)
- L T Yang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H B Li
- Institute of Physics, Academia Sinica, Taipei 11529
| | - Q Yue
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H Ma
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - K J Kang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Y J Li
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H T Wong
- Institute of Physics, Academia Sinica, Taipei 11529
| | - M Agartioglu
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Dokuz Eylül University, İzmir 35160
| | - H P An
- Department of Physics, Tsinghua University, Beijing 100084
| | | | - J H Chen
- Institute of Physics, Academia Sinica, Taipei 11529
| | - Y H Chen
- YaLong River Hydropower Development Company, Chengdu 610051
| | - J P Cheng
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - Z Deng
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Q Du
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - H Gong
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Q J Guo
- School of Physics, Peking University, Beijing 100871
| | - L He
- NUCTECH Company, Beijing 100084
| | - J W Hu
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Q D Hu
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H X Huang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - L P Jia
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H Jiang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H Li
- NUCTECH Company, Beijing 100084
| | - J M Li
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - J Li
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - X Li
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - X Q Li
- School of Physics, Nankai University, Tianjin 300071
| | - Y L Li
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - B Liao
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - F K Lin
- Institute of Physics, Academia Sinica, Taipei 11529
| | - S T Lin
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - S K Liu
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - Y D Liu
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - Y Y Liu
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - Z Z Liu
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - J L Ma
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- Department of Physics, Tsinghua University, Beijing 100084
| | - Y C Mao
- School of Physics, Peking University, Beijing 100871
| | - H Pan
- NUCTECH Company, Beijing 100084
| | - J Ren
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - X C Ruan
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - V Sharma
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Banaras Hindu University, Varanasi 221005
| | - Z She
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - M B Shen
- YaLong River Hydropower Development Company, Chengdu 610051
| | - L Singh
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Banaras Hindu University, Varanasi 221005
| | - M K Singh
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Banaras Hindu University, Varanasi 221005
| | - T X Sun
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - C J Tang
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - W Y Tang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Y Tian
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - G F Wang
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - J M Wang
- YaLong River Hydropower Development Company, Chengdu 610051
| | - L Wang
- Department of Physics, Beijing Normal University, Beijing 100875
| | - Q Wang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- Department of Physics, Tsinghua University, Beijing 100084
| | - Y Wang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- Department of Physics, Tsinghua University, Beijing 100084
| | - Y X Wang
- School of Physics, Peking University, Beijing 100871
| | - S Y Wu
- YaLong River Hydropower Development Company, Chengdu 610051
| | - Y C Wu
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H Y Xing
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - Y Xu
- School of Physics, Nankai University, Tianjin 300071
| | - T Xue
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - N Yi
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - C X Yu
- School of Physics, Nankai University, Tianjin 300071
| | - H J Yu
- NUCTECH Company, Beijing 100084
| | - J F Yue
- YaLong River Hydropower Development Company, Chengdu 610051
| | - X H Zeng
- YaLong River Hydropower Development Company, Chengdu 610051
| | - M Zeng
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Z Zeng
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - F S Zhang
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - Y H Zhang
- YaLong River Hydropower Development Company, Chengdu 610051
| | - M G Zhao
- School of Physics, Nankai University, Tianjin 300071
| | - J F Zhou
- YaLong River Hydropower Development Company, Chengdu 610051
| | - Z Y Zhou
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - J J Zhu
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - Z H Zhu
- YaLong River Hydropower Development Company, Chengdu 610051
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Zhu ZH, Li JM, Hao ZQ, Tang SS, Tang Y, Guo LB, Li XY, Zeng XY, Lu YF. Isotopic determination with molecular emission using laser-induced breakdown spectroscopy and laser-induced radical fluorescence. Opt Express 2019; 27:470-482. [PMID: 30696132 DOI: 10.1364/oe.27.000470] [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] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 12/26/2018] [Indexed: 06/09/2023]
Abstract
Molecular emission can be used for isotopic analysis in laser-induced breakdown spectroscopy (LIBS) due to its large isotopic shift. However, spectral weakness and interference have become the main flaws in molecular isotopic analysis, causing deterioration of quantitative accuracy and sensitivity. Here, to overcome these problems, laser-induced radical fluorescence (LIRF) was applied to enhance the molecular spectra and eliminate the spectral interference. The root mean square errors of cross validation (RMSECVs) of boron and carbon isotopes (11BO, 10BO, 12CN, and 13CN) improved to 2.632, 5.721, 5.990, and 1.543 at.%, as compared with 16.96, 35.79, 57.10, and 13.89 at.%, respectively, obtained in the case without LIRF. The limits of detection (LoDs) of 11BO, 10BO, 12CN, and 13CN were 0.9858, 0.8470, 1.606, and 1.193 at.%, respectively. This work demonstrates the feasibility of LIBS-LIRF to achieve isotopic determination with high accuracy and sensitivity.
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15
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Zhu ZH, Strempfer J, Rao RR, Occhialini CA, Pelliciari J, Choi Y, Kawaguchi T, You H, Mitchell JF, Shao-Horn Y, Comin R. Anomalous Antiferromagnetism in Metallic RuO_{2} Determined by Resonant X-ray Scattering. Phys Rev Lett 2019; 122:017202. [PMID: 31012682 DOI: 10.1103/physrevlett.122.017202] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 11/19/2018] [Indexed: 06/09/2023]
Abstract
We studied the magnetic ordering of thin films and bulk crystals of rutile RuO_{2} using resonant x-ray scattering across the Ru L_{2} absorption edge. Combining polarization analysis and azimuthal angle dependence of the magnetic Bragg signal, we have established the presence and characteristic of collinear antiferromagnetism in RuO_{2} with T_{N}>300 K. In addition to revealing a spin-ordered ground state in the simplest ruthenium oxide compound, the persistence of magnetic order even in nanometer-thick films lays the ground for potential applications of RuO_{2} in antiferromagnetic spintronics.
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Affiliation(s)
- Z H Zhu
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Strempfer
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - R R Rao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - C A Occhialini
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Pelliciari
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Y Choi
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - T Kawaguchi
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - H You
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J F Mitchell
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Y Shao-Horn
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Department of Material Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - R Comin
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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16
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Chen YL, Zhu ZH, Wang YK, Fan SW, Fang XQ, Wan SL, Zhang JF, Zhao X, Zhao FD. [Effects of oblique lateral interbody fusion and transforaminal lumbar interbody fusion for lordosis correction in degenerative lumbar diseases]. Zhonghua Yi Xue Za Zhi 2018; 98:1990-1995. [PMID: 29996598 DOI: 10.3760/cma.j.issn.0376-2491.2018.25.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the operation time, estimated blood loss, clinical outcome and correction of lumbar lordosis between oblique lateral interbody fusion (OLIF) and transforaminal lumbar interbody fusion (TLIF) in patients with degenerative lumbar diseases. Methods: Seventy-three patients who underwent OLIF or TLIF surgery from January 2016 to December 2017 in Sir Run Run Shaw Hospital Zhejiang University were analyzed in this retrospective case-control study. The patients included 31 males and 42 females, with a mean age of 65.8 years (range, 36-88 years). Of the patients, there were 9 cases of calcified disc herniation, 34 cases of spinal stenosis, 17 cases of degenerative spondylolithesis, 12 cases of degenerative scoliosis and 1 case of isthmic spondylolithesis. According to the type of surgery, patients were divided into OLIF group (34 cases) and TLIF group (39 cases). The operation time, estimated blood loss and transfusion were recorded, pre-and post-operative visual analogue scale (VAS) for back pain and Oswestry Disability Index (ODI) were evaluated, and pre- and post-operative lumbar lordosis (LL) and fused segment lordosis (FSL) were measured. Student t test were used in comparison between groups. Results: Ten (29.4%) patients in OLIF group and all 39 (100%) patients in TLIF group were supplemented with posterior instrumentation (χ(2)=41.013, P<0.05). The average operation time and estimated blood loss was significantly lower in OLIF group than in those in TLIF group[(163±68) vs (233±79) min, (116±148) vs (434±201) ml, t=4.019, 6.964, both P<0.05]. There was no significant differences in decreases value in VAS and ODI after surgery between the two groups (t=1.716, 0.522, both P>0.05). The correction of LL was 4.0°±10.0° in the OLIF group and 4.2°±6.1° in the TLIF group; the correction of FSL was 4.1°±7.0° in the OLIF group and 5.2°±4.6° in the TLIF group, with no significant differences between the two groups too (t=0.139, 0.805, both P>0.05). The correction of LL was significantly higher in OLIF group with posterior instrumentation than that in TLIF group (9.9°±11.1° vs 4.2°±6.1°, t=2.180, P<0.05). Conclusions: Both OLIF and TLIF can restore LL to some extent, but OLIF has obvious advantages in the operation time and blood loss during surgery. When supplemented with posterior instrumentation, OLIF can achieve better correction of LL than TLIF.
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Affiliation(s)
- Y L Chen
- Department of Orthopedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
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17
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Gu XY, Zhang R, Zhu ZH, Ma ZX, Gu WC. [A case report of plasma cell granuloma in maxillary sinuses]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 31:1608-1609. [PMID: 29797961 DOI: 10.13201/j.issn.1001-1781.2017.20.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Indexed: 11/12/2022]
Abstract
Plasma cell granuloma is a kind of the disease with low incidence at head and neck,which is a benign lesions with malignant biological performance. The diagnosis of plasma cell granuloma is difficult as the symptom is not typical and it is difficult to distinguish with cancers and other diseases through the physical sign and imaging manifestation. The golden standard of diagnosis is histopathological examination. The therapy of plasma cell granuloma is still controversial, but the first choice is the operation. The other therapy such as hormone therapy, radiotherapy, chemotherapy etc., should be applied according to special conditions. Surgery has advantage with high cure rate and very low reoccurance rate. In this paper, we reported a case of plasma cell granuloma, occurred in maxillary sinus and summarizes the experiences about diagnosis and therapy of plasma cell granuloma in maxillary sinus through review previous literature.
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18
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Zhang Z, Sutarto R, He F, Chou FC, Udby L, Holm SL, Zhu ZH, Hines WA, Budnick JI, Wells BO. Nematicity and Charge Order in Superoxygenated La_{2-x}Sr_{x}CuO_{4+y}. Phys Rev Lett 2018; 121:067602. [PMID: 30141664 DOI: 10.1103/physrevlett.121.067602] [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: 10/02/2017] [Revised: 02/24/2018] [Indexed: 06/08/2023]
Abstract
In this Letter, we report a resonant x-ray scattering measurement of stripelike charge order in the 1/8th doped component of electronically phase-separated, orthorhombic La_{2}CuO_{4+y}. This observation is coupled to the absence of any resonant (001) peak, which at different resonant energies has been identified with the presence of low-temperature-tetragonal-like structural tilt patterns or nematicity in the CuO planes. Thus, we provide evidence that structural pinning is not necessary for the formation of static charge stripes and that the relationship between charge nematicity and stripes may not be simple.
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Affiliation(s)
- Zhiwei Zhang
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - R Sutarto
- Canadian Light Source, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - F He
- Canadian Light Source, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - F C Chou
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10670, Taiwan
| | - L Udby
- X-ray and Neutron Science, Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - S L Holm
- X-ray and Neutron Science, Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Z H Zhu
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - W A Hines
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - J I Budnick
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - B O Wells
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
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19
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Jiang H, Jia LP, Yue Q, Kang KJ, Cheng JP, Li YJ, Wong HT, Agartioglu M, An HP, Chang JP, Chen JH, Chen YH, Deng Z, Du Q, Gong H, He L, Hu JW, Hu QD, Huang HX, Li HB, Li H, Li JM, Li J, Li X, Li XQ, Li YL, Liao B, Lin FK, Lin ST, Liu SK, Liu YD, Liu YY, Liu ZZ, Ma H, Ma JL, Pan H, Ren J, Ruan XC, Sevda B, Sharma V, Shen MB, Singh L, Singh MK, Sun TX, Tang CJ, Tang WY, Tian Y, Wang GF, Wang JM, Wang L, Wang Q, Wang Y, Wu SY, Wu YC, Xing HY, Xu Y, Xue T, Yang LT, Yang SW, Yi N, Yu CX, Yu HJ, Yue JF, Zeng XH, Zeng M, Zeng Z, Zhang FS, Zhang YH, Zhao MG, Zhou JF, Zhou ZY, Zhu JJ, Zhu ZH. Limits on Light Weakly Interacting Massive Particles from the First 102.8 kg×day Data of the CDEX-10 Experiment. Phys Rev Lett 2018; 120:241301. [PMID: 29956956 DOI: 10.1103/physrevlett.120.241301] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/07/2018] [Indexed: 06/08/2023]
Abstract
We report the first results of a light weakly interacting massive particles (WIMPs) search from the CDEX-10 experiment with a 10 kg germanium detector array immersed in liquid nitrogen at the China Jinping Underground Laboratory with a physics data size of 102.8 kg day. At an analysis threshold of 160 eVee, improved limits of 8×10^{-42} and 3×10^{-36} cm^{2} at a 90% confidence level on spin-independent and spin-dependent WIMP-nucleon cross sections, respectively, at a WIMP mass (m_{χ}) of 5 GeV/c^{2} are achieved. The lower reach of m_{χ} is extended to 2 GeV/c^{2}.
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Affiliation(s)
- H Jiang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - L P Jia
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Q Yue
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - K J Kang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - J P Cheng
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - Y J Li
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H T Wong
- Institute of Physics, Academia Sinica, Taipei 11529
| | - M Agartioglu
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Dokuz Eylül University, Ízmir 35160
| | - H P An
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- Department of Physics, Tsinghua University, Beijing 100084
| | | | - J H Chen
- Institute of Physics, Academia Sinica, Taipei 11529
| | - Y H Chen
- YaLong River Hydropower Development Company, Chengdu 610051
| | - Z Deng
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Q Du
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - H Gong
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - L He
- NUCTECH Company, Beijing 100084
| | - J W Hu
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Q D Hu
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H X Huang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - H B Li
- Institute of Physics, Academia Sinica, Taipei 11529
| | - H Li
- NUCTECH Company, Beijing 100084
| | - J M Li
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - J Li
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - X Li
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - X Q Li
- School of Physics, Nankai University, Tianjin 300071
| | - Y L Li
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - B Liao
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - F K Lin
- Institute of Physics, Academia Sinica, Taipei 11529
| | - S T Lin
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - S K Liu
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - Y D Liu
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - Y Y Liu
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - Z Z Liu
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H Ma
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - J L Ma
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- Department of Physics, Tsinghua University, Beijing 100084
| | - H Pan
- NUCTECH Company, Beijing 100084
| | - J Ren
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - X C Ruan
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - B Sevda
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Dokuz Eylül University, Ízmir 35160
| | - V Sharma
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Banaras Hindu University, Varanasi 221005
| | - M B Shen
- YaLong River Hydropower Development Company, Chengdu 610051
| | - L Singh
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Banaras Hindu University, Varanasi 221005
| | - M K Singh
- Institute of Physics, Academia Sinica, Taipei 11529
- Department of Physics, Banaras Hindu University, Varanasi 221005
| | - T X Sun
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - C J Tang
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - W Y Tang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Y Tian
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - G F Wang
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - J M Wang
- YaLong River Hydropower Development Company, Chengdu 610051
| | - L Wang
- Department of Physics, Beijing Normal University, Beijing 100875
| | - Q Wang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- Department of Physics, Tsinghua University, Beijing 100084
| | - Y Wang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- Department of Physics, Tsinghua University, Beijing 100084
| | - S Y Wu
- YaLong River Hydropower Development Company, Chengdu 610051
| | - Y C Wu
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - H Y Xing
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - Y Xu
- School of Physics, Nankai University, Tianjin 300071
| | - T Xue
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - L T Yang
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
- Department of Physics, Tsinghua University, Beijing 100084
| | - S W Yang
- Institute of Physics, Academia Sinica, Taipei 11529
| | - N Yi
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - C X Yu
- School of Physics, Nankai University, Tianjin 300071
| | - H J Yu
- NUCTECH Company, Beijing 100084
| | - J F Yue
- YaLong River Hydropower Development Company, Chengdu 610051
| | - X H Zeng
- YaLong River Hydropower Development Company, Chengdu 610051
| | - M Zeng
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - Z Zeng
- Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
| | - F S Zhang
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
| | - Y H Zhang
- YaLong River Hydropower Development Company, Chengdu 610051
| | - M G Zhao
- School of Physics, Nankai University, Tianjin 300071
| | - J F Zhou
- YaLong River Hydropower Development Company, Chengdu 610051
| | - Z Y Zhou
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
| | - J J Zhu
- College of Physical Science and Technology, Sichuan University, Chengdu 610064
| | - Z H Zhu
- YaLong River Hydropower Development Company, Chengdu 610051
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20
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Zhang S, Li DD, Zeng F, Zhu ZH, Song P, Zhao M, Duan JA. Efficient biosynthesis, analysis, solubility and anti-bacterial activities of succinylglycosylated naringenin. Nat Prod Res 2018; 33:1756-1760. [PMID: 29446976 DOI: 10.1080/14786419.2018.1431633] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A novel water-soluble flavonoid with good anti-bacterial activities, naringenin-6″-succl-7-O-glucoside (7-SGN), was synthesised. It was biotransformed from naringenin by Bacillus amyloliquefaciens FJ18 in aqueous miscible organic media, and characterised by LC-MS and NMR analysis. The solubility of 7-SGN in water was approximately 102 times higher than that of naringenin. These results demonstrated that both the water solubility and the anti-bacterial activity of 7-SGN were significantly improved.
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Affiliation(s)
- S Zhang
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing , PR China
| | - D D Li
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing , PR China
| | - F Zeng
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing , PR China
| | - Z H Zhu
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing , PR China
| | - P Song
- b State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering , Nanjing University of Technology , Nanjing , PR China
| | - M Zhao
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing , PR China
| | - J A Duan
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing , PR China
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21
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Guo LB, Zhu ZH, Li JM, Tang Y, Tang SS, Hao ZQ, Li XY, Lu YF, Zeng XY. Determination of boron with molecular emission using laser-induced breakdown spectroscopy combined with laser-induced radical fluorescence. Opt Express 2018; 26:2634-2642. [PMID: 29401800 DOI: 10.1364/oe.26.002634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/20/2018] [Indexed: 06/07/2023]
Abstract
Boron is an essential element for industry, but it is hard to accurately and rapidly determine high boron content with conventional laser-induced breakdown spectroscopy (LIBS), due to the matrix and self-absorption effect. Using molecular emission is an alternative method for boron content analysis, but its weak spectra are major challenges. Here, boron monoxide (BO) radicals were used to establish calibration assisted by LIBS and laser-induced radical fluorescence (LIBS-LIRF). Two types of BO radical excitations, vibrational ground state excitation (LIRFG) and vibrational excited state excitation (LIRFE), were compared. The results showed that LIRFG achieved better sensitivity with a limit of detection of 0.0993 wt.%, while the LIRFE was more accurate with a root mean square error of cross validation of 0.2514 wt.%. In conclusion, this work provided a potential approach for molecular emission analysis with LIBS-LIRF.
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Gong S, Zhu ZH, Li Z. Electron tunnelling and hopping effects on the temperature coefficient of resistance of carbon nanotube/polymer nanocomposites. Phys Chem Chem Phys 2018; 19:5113-5120. [PMID: 28138678 DOI: 10.1039/c6cp08115k] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effectively tailoring the temperature coefficient of resistance (TCR) is critical for multifunctional carbon nanotube (CNT) polymer composites with sensing capability. By developing a new multiscale percolation network model, this work reveals theoretically that the zero-TCR could be achieved by adjusting competing contributions from thermally assisted tunnelling transport at CNT junctions and thermal expansion of matrices. On the other hand, the negative temperature coefficient of nanocomposites above glass transition temperature could be greatly enhanced because the transport mechanism at the CNT junctions experienced a transition from tunnelling to hopping. Both tube-tube and/or tube-matrix interactions at conjunction and the structural distortion of nanotubes are considered in the newly proposed model. To validate the model, CNT/polymer nanocomposites with nearly constant resistance values (zero-TCR) below the glass transition temperature and a high TCR (98% resistance change ratio) resulting from the glass transition of the polymer matrix are successfully developed. The study also suggests that the desired parameters to achieve the zero-TCR property and the potential resistance change ratio could be improved by the glass transition in nanocomposites. This could be beneficial for the development of high quality sensing materials.
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Affiliation(s)
- S Gong
- School of Metallurgy and Environment, Central South University, Changsha, 410083, People's Republic of China and School of Materials Science and Engineering, Central South University, Changsha, 410083, People's Republic of China and Department of Mechanical Engineering, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
| | - Z H Zhu
- Department of Mechanical Engineering, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
| | - Z Li
- School of Materials Science and Engineering, Central South University, Changsha, 410083, People's Republic of China
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Yang X, Zhu ZH, Zhang M, Li DY, Liu DL, Cheng Y, Yan H, Zeng LX. [Study of the relevant factors of behavioral development among 30-month-old infants in rural area of Shaanxi Province]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:628-634. [PMID: 28693088 DOI: 10.3760/cma.j.issn.0253-9624.2017.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the relevant factors of behavioral development among 30-month-old infants in rural area, Shaanxi Province. Methods: The behavioral development among 977 infants aged 30-month-old was evaluated in Changwu and Binxian of Shaanxi province from July 2006 to August 2008. The inclusion criteria included single live birth between January 2004 and February 2006, mother had participated in a community-based intervention study named "Impact of multi-micronutrient supplementation during pregnancy on low birth weight and premature delivery" . Infants who had obvious deformity or other birth defects, infants who could not complete the questionnaire survey, physical examination were excluded from the study. The self-designed questionnaire was used to investigate the information of feeding patterns, disease status, physical development, and immunization status of the infants, and their behavioral development were assessed by Bayley scales of infant development (BSID). General Linear Model was used to adjust the possible confounding factors, and the analysis of variance was performed to explore the effects on the behavioral development among infants aged 30-month-old. Results: Among the infants in the study, the average age was (30.6±0.6) months old, the mean birth weight was (3 199.1±405.9)g. After adjusted the mothers' age of delivery, educational level and occupation of the parents, family ecnomic conditions and the number of children, infants whose mother exposed to toxic chemicals during pregnancy had lower score in activity (-0.179±0.961) and lower score in concentration (-0.177±1.099) compared with infants with unexposed mother (0.058±1.006, P=0.001; 0.057±0.960, P=0.003). Similarly, infants whose mother took drugs during pregnancy had lower score in persistent behaviors (-0.070±1.000) compared with infants whose mother did not(0.085±1.006, P=0.017). Compared with normal birth infants(0.043±0.981, P=0.007; 0.021±0.984, P=0.034), infants less than gestational age and low birth weight had lower score in concentration(-0.198±1.063 and-0.389±1.285, respectively). After adjusted the delivery gestational age of mothers, the months of infants, the mothers' age of delivery, educational level and occupation of the parents, family ecnomic conditions, the number of children, and the main orderlies of infants, the score of activity of infants suffered from diseases in early month age was-0.049±0.992, which was lower than those who did not(0.207±1.011, P=0.001). The infants with Rickets signs had lower score in motor coordination (-0.218±0.896) than normal infants (0.031±1.011, P=0.013). Infants whose mother with adequate micronutrient supplementation in pregnancy had higher score in concentration (0.066±0.966) than those whose mother with insufficient supplementation (-0.062±1.027, P=0.043). Furthermore, infants with fine protein added and minerals and vitamins added had higher score in activity and concentration compared with those insufficient, who scored 0.078±1.013 and 0.496±0.872 (-0.254±0.924, P<0.001; 0.001±0.997, P=0.033), respectively. Conclusion: Micronutrient supplementation during pregnancy and reasonable nutrition added during childhood could affect behavioral development among infants.
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Affiliation(s)
- X Yang
- Department of Health, North-west Women and Children's Hospital, Xi'an 710061, China
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Fan YS, Guo CC, Zhu ZH, Xu W, Wu F, Yuan XD, Qin SQ. Monolayer-graphene-based perfect absorption structures in the near infrared. Opt Express 2017; 25:13079-13086. [PMID: 28788841 DOI: 10.1364/oe.25.013079] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 05/17/2017] [Indexed: 06/07/2023]
Abstract
Subwavelength perfect optical absorption structures based on monolayer-graphene are analyzed and demonstrated experimentally. The perfect absorption mechanism is a result of critical coupling relating to a guided mode resonance of a low index two-dimensional periodic structure. Peak absorption over 99% at wavelength of 1526.5 nm with full-width at half maximum (FWHM) about 18 nm is demonstrated from a fabricated structure with period of 1230 nm, and the measured results agree well with the simulation results. In addition, the influence of geometrical parameters of the structure and the angular response for oblique incidence are analyzed in detail in the simulation. The demonstrated absorption structure in the presented work has great potential in the design of advanced photo-detectors and modulators.
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Huang X, Wang XY, Zhu ZH, Qi XK, Yu YX. [A clinical report of five cases of central nervous system miliary tuberculomas first diagnosed by neurologists]. Zhonghua Nei Ke Za Zhi 2017; 56:205-207. [PMID: 28253602 DOI: 10.3760/cma.j.issn.0578-1426.2017.03.011] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
To explore the clinical characteristics and imaging features of miliary tuberculomas in central nervous system(CNS). A total of 5 cases diagnosed with tuberculosis in CNS first diagnosed by neurologists in Navy General Hospital of PLA were enrolled in the study. All clinical and imaging data were collected and analyzed retrospectively. The main initial symptoms were fever and headache (4/5). Multiple diffused miliary lesions were shown by brain MRI, with maximum diameter ranged from 1-4 mm and ring-shape or nodular enhancement after gadolinium injection. As mycobacterium tuberculosis could seldomly be found in serum and cerebrospinal fluid, contrast MRI remains the effective method for detecting miliary tuberculomas in CNS.
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Affiliation(s)
| | | | | | | | - Y X Yu
- Department of Neurology, Navy General Hospital of PLA, Beijing 100048, China
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Dong XJ, Sun JM, Lou LQ, Zhu ZH, Zhu LB, Lou T. [Survey of the third Zika virus disease case in the mainland of China]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 37:597-9. [PMID: 27188345 DOI: 10.3760/cma.j.issn.0254-6450.2016.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the performance of Zika virus(ZIKV)disease prevention and control. METHODS Descriptive epidemiological analysis was conducted on the clinical manifestations, laboratory detection results and disease progression of the third imported ZIKV disease case in the mainland of China. RESULTS On 19 February 2016, a ZIKV disease case was confirmed in Yiwu, Zhejiang province, which was the third imported case of ZIKV disease confirmed by China CDC laboratory and expert consulting. The patient just had a travel to Fiji and Samoa and had mosquito bite history in Samoa. The patient was hospitalized on 16 February after the onset on 14 February and the eruption on 15 February. The body temperature of the patient became normal on 17 February, the rash disappeared on 19 February and the conjunctivitis resolved on 20 February. The positive detection of the viral nucleic acid in blood was only for 3 consecutive days, and the viral nucleic acid could be detected in urine even after negative detection in blood for 4 days. CONCLUSION The symptoms of the patient were typical. ZIKV can be detected by using blood sample in early phase, but after body temperature become normal, the virus can be detected in urine.
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Affiliation(s)
- X J Dong
- Yiwu Prefecture Center for Disease Control and Prevention, Yiwu 322000, China
| | - J M Sun
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China
| | - L Q Lou
- Yiwu Central Hospital, Yiwu 322000, China
| | - Z H Zhu
- Yiwu Prefecture Center for Disease Control and Prevention, Yiwu 322000, China
| | - L B Zhu
- Yiwu Prefecture Center for Disease Control and Prevention, Yiwu 322000, China
| | - T Lou
- Yiwu Prefecture Center for Disease Control and Prevention, Yiwu 322000, China
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Wang M, Zhou L, Xue HD, Jiang Y, Zhong DR, Zhu ZH. [Clinical and radiologic characteristics of craniomaxillofacial primary tumor induced osteomalacia: a retrospective analysis]. Zhonghua Kou Qiang Yi Xue Za Zhi 2016; 51:341-5. [PMID: 27256527 DOI: 10.3760/cma.j.issn.1002-0098.2016.06.005] [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: 11/05/2022]
Abstract
OBJECTIVE To investigate the diagnosis strategy, radiology and clinical pathology feature of craniomaxillofacial primary tumor induced osteomalacia. METHODS Twelve cases of craniomaxillofacial primary tumor induced osteomalacia were reviewed, including 5 male and 7 female with a age range from 16 to 69 years. The clinical characteristics, radiology examinations and pathological features were analyzed. RESULTS The craniomaxillofacial primary tumor induced osteomalacia occurred in different ages, with 2 to 30 years of medical history. Seven of the twelve cases were octreotide scintigraphy positive, nine of the twelve cases invaded bone, exhibiting destruction of the adjacent cortex, ten of the twelve showed gingival lesions of local thickening or epulis. The tumor arises from mesenchymal tissue, infiltrating local gingiva and bone trabecular with spindle like fibroblasts and dental epithelial rests. CONCLUSIONS The concealed nature of the tumor induced osteomalacia requires multiple methods to locate the primary tumor and the tumors located in craniomaxillofacial region have unique clinical and pathological features.
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Affiliation(s)
- M Wang
- Department of Stomatology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L Zhou
- Department of Stomatology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - H D Xue
- Department of Stomatology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y Jiang
- Department of Stomatology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - D R Zhong
- Department of Stomatology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Z H Zhu
- Department of Stomatology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Meng F, Guo HN, Cui YL, Xiong PD, Cao J, Zhu ZH. [Correlation between type D personality and cognitive fusion in 388 employees of state-owned enterprises]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:95-8. [PMID: 27014884 DOI: 10.3760/cma.j.issn.1001-9391.2016.02.004] [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: 11/05/2022]
Abstract
OBJECTIVE To investigate the correlation between type D personality and cognitive fusion in 388 employees from state-owned enterprises, and to provide a theoretical basis for psychological intervention for type D personality. METHODS In May 2014, cluster random sampling was used to randomly select 400 employees from two state-owned enterprises who underwent physical examination and were willing to participate in the test. The test was performed with Cognitive Fusion Questionnaire(CFQ) and Type D Personality Scale(DS-14). RESULTS The social inhibition group and the group without negative affectivity and social inhibition had a significantly lower mean cognitive fusion score than the type D personality group(25.62±8.92/20.58±8.26 vs 32.38±9.66, P <0.01). The group without negative affectivity and social inhibition had a significantly lower mean cognitive fusion score than the negative affectivity group(31.96±10.20) and the social inhibition group(P<0.01). The social inhibition group had a significantly lower mean cognitive fusion score than the negative affectivity group (P<0.05). In the employees with type D personality, the subscales negative affectivity and social inhibition were positively correlated with cognitive fusion(r=0.599 and 0.392, P<0.01). Negative affectivity(ΔF= 211.484, P<0.05) played a role in explaining cognitive fusion. CONCLUSION In the employees of state-owned enterprises, cognitive fusion is different between those with type D personality and those without type D personality. In the employees with type D personality, social inhibition and negative affectivity are correlated with cognitive infusion, and negative affectivity plays a role in explaining cognitive fusion.
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Affiliation(s)
- F Meng
- Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
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Xu W, Zhu ZH, Liu K, Zhang JF, Yuan XD, Lu QS, Qin SQ. Chip-integrated nearly perfect absorber at telecom wavelengths by graphene coupled with nanobeam cavity. Opt Lett 2015; 40:3256-3259. [PMID: 26176443 DOI: 10.1364/ol.40.003256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We exploit the concept of critical coupling to graphene based chip-integrated applications and numerically demonstrate that a chip-integrated nearly perfect graphene absorber at wavelengths around 1.55 μm can be obtained by graphene nearly critical coupling with a nanobeam cavity. The key points are reducing the radiation loss and transmission possibly, together with controlling the coupling rate of the cavity to the input waveguide to be equal to the absorption rate of the cavity caused by graphene. Simulation results show that the absorption of monolayer graphene with a total length of only a few microns is raised up to 97%. Our study may have potential applications in chip-integrated photodetectors.
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Peng P, Zhu ZH, Zhong ZJ, Zheng K, Yang JX, Cao DY, Shen K. Benefits of fluorine-18 fludeoxyglucose positron emission tomography in secondary cytoreductive surgery for patients with recurrent epithelial ovarian cancer. Br J Radiol 2015; 88:20150109. [PMID: 25989698 DOI: 10.1259/bjr.20150109] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To investigate the benefits of fluorine-18 fludeoxyglucose positron emission tomography ((18)F-FDG-PET) in patients undergoing secondary cytoreductive surgery (SCRS) for recurrent epithelial ovarian cancer. METHODS Patients were identified, and their clinical information was extracted by review of the gynaecologic oncology database of Peking Union Medical College Hospital. (18)F-FDG-PET scan and analysis were performed by nuclear medicine experts at our hospital. RESULTS The PET group and the control group of patients evaluated by conventional imaging methods differed significantly with respect to the proportion of patients who underwent complete SCRS and the number of residual lesions (p = 0.002 and 0.006, respectively). A Cox model showed that longer progression-free survival (PFS) correlated significantly with (18)F-FDG-PET evaluation [relative risk (RR) = 0.432; p = 0.001], sensitivity to platinum-based chemotherapies (RR = 0.604; p = 0.034) and resection completeness (RR = 0.679; p = 0.039). Longer overall survival (OS) correlated significantly with sensitivity to platinum-based chemotherapy (RR = 0.317; p = 0.000) and the CA-125 level after two cycles of chemotherapy (RR = 2.663; p = 0.003). Surgical safety and complications did not significantly differ between the two groups of patients. CONCLUSION (18)F-FDG-PET is useful for evaluating patients with recurrent epithelial ovarian carcinoma. Patients who undergo PET-guided SCRS have a greater chance of complete tumour resection and a longer PFS. ADVANCES IN KNOWLEDGE SCRS guided by PET results in fewer residual lesions. PET-guided SCRS is safe and can prolong PFS and OS in patients with recurrent ovarian cancer.
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Affiliation(s)
- P Peng
- 1 Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Z H Zhu
- 2 Department of Nuclear Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Z J Zhong
- 1 Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - K Zheng
- 2 Department of Nuclear Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - J X Yang
- 1 Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - D Y Cao
- 1 Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - K Shen
- 1 Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
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Xu W, Zhu ZH, Liu K, Zhang JF, Yuan XD, Lu QS, Qin SQ. Toward integrated electrically controllable directional coupling based on dielectric loaded graphene plasmonic waveguide. Opt Lett 2015; 40:1603-1606. [PMID: 25831395 DOI: 10.1364/ol.40.001603] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We propose and numerically analyze a mid-infrared electrically controllable plasmonic waveguide directional coupler that is composed of two parallel identical straight dielectric loaded graphene plasmonic waveguide and S-shaped waveguide bends. By varying the Fermi energy level of the graphene sheet, the maximum power coupled from the input waveguide to the cross-waveguide and the corresponding coupling length could be effectively tuned. Under different Fermi energy level, this directional coupler could serve as an electrically controlled optical switch or a 3-dB splitter around the wavelength of 10.5 μm. Moreover, the size of the entire device is really in sub-wavelength scale making it very facilitative for high density integration.
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Duan X, Ao Z, Sun H, Indrawirawan S, Wang Y, Kang J, Liang F, Zhu ZH, Wang S. Nitrogen-doped graphene for generation and evolution of reactive radicals by metal-free catalysis. ACS Appl Mater Interfaces 2015; 7:4169-4178. [PMID: 25632991 DOI: 10.1021/am508416n] [Citation(s) in RCA: 325] [Impact Index Per Article: 36.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
N-Doped graphene (NG) nanomaterials were synthesized by directly annealing graphene oxide (GO) with a novel nitrogen precursor of melamine. A high N-doping level, 8-11 at. %, was achieved at a moderate temperature. The sample of NG-700, obtained at a calcination temperature of 700 °C, showed the highest efficiency in degradation of phenol solutions by metal-free catalytic activation of peroxymonosulfate (PMS). The catalytic activity of the N-doped rGO (NG-700) was about 80 times higher than that of undoped rGO in phenol degradation. Moreover, the activity of NG-700 was 18.5 times higher than that of the most popular metal-based catalyst of nanocrystalline Co3O4 in PMS activation. Theoretical calculations using spin-unrestricted density functional theory (DFT) were carried out to probe the active sites for PMS activation on N-doped graphene. In addition, experimental detection of generated radicals using electron paramagnetic resonance (EPR) and competitive radical reactions was performed to reveal the PMS activation processes and pathways of phenol degradation on nanocarbons. It was observed that both (•)OH and SO4(•-) existed in the oxidation processes and played critical roles for phenol oxidation.
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Affiliation(s)
- Xiaoguang Duan
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Bentley, Western Australia 6845, Australia
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Abstract
Dielectric loaded graphene plasmon waveguide (DLGPW) is proposed and investigated. An analytical model based on effective-index method is presented and verified by the finite element method simulations. The mode effective index, propagation loss, cutoff wavelength of higher order modes and single-mode operation region were derived at mid-infrared spectral region. By changing Fermi energy level, the propagation properties of fundamental mode could be tuned flexibly. The structure of the DLGPW is simple and easy for fabrication. It provided a new freedom to manipulate the graphene surface plasmons, which may led to new applications in actively tunable integrated optical devices.
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Gong S, Zhu ZH. Giant piezoresistivity in aligned carbon nanotube nanocomposite: account for nanotube structural distortion at crossed tunnel junctions. Nanoscale 2015; 7:1339-1348. [PMID: 25492244 DOI: 10.1039/c4nr05656f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
High piezoresistivity is critical for multifunctional carbon nanotube polymer composites with sensing capability. By developing a new percolation network model, this work reveals theoretically that a giant piezoresistivity in the composites can be potentially achieved by controlled nanotube alignment resulting from field based alignment techniques. The tube-tube and/or tube-matrix interaction in conjunction with the aligned carbon nanotube networks are fully considered in the newly proposed model. The structural distortion of nanotubes is determined self-consistently by minimizing the pseudo-potential energy at crossed-tube junctions based on the Lennard-Jones potential and simulation of coarse grain molecular dynamics. The tunneling transport through crossed-tube junctions is calculated by the Landauer-Büttiker formula with empirical fitting by first-principle calculation. The simulation results also reveal that the piezoresistivity can be further improved by using low carbon nanotube loadings near the percolation threshold, carbon nanotubes with a small aspect ratio, high intrinsic conductivity and polymers with a small Poisson's ratio. This giant piezoresistive effect offers a tremendously promising future, which needs further thorough exploration.
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Affiliation(s)
- S Gong
- Department of Earth and Space Science and Engineering, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
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Zhu ZH, Li HY, Qin Y, Wang RX. Genetic diversity and population structure in Harpadon nehereus based on sequence-related amplified polymorphism markers. Genet Mol Res 2014; 13:5974-81. [PMID: 25117356 DOI: 10.4238/2014.august.7.13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, the genetic diversity among ten populations of the Bombay duck was studied on the basis of sequence-related amplified polymorphism (SRAP). The ten populations were collected from the East China Sea and South China Sea areas. A total of 98 loci were obtained from 292 individuals using eight SRAP primers. The average proportion of polymorphic loci, genetic diversity (H), and Shannon's information index were 75.20%, 0.2478, and 0.3735, respectively. Nei's genetic distance and Shannon's information index between the ten populations ranged from 0.0410 to 0.3841 and from 0.2396 to 0.4506, and the averages Nei's gene diversity index (H = 0.2478) and Shannon's information index (I = 0.3735) at the population level were high. AMOVA showed that most of the variation was within populations (71.74%), and only 28.26% of the variation was between populations. The neighbor-joining tree based on genetic distance revealed that significant genealogical structure existed throughout the examined range of the Bombay duck. The results demonstrated that SRAP marker was an effective tool for the assessment of genetic diversity in the Bombay duck. The results could be used for further protection of the germplasm resource of the Bombay duck.
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Affiliation(s)
- Z H Zhu
- Laboratory for Marine Living Resources and Molecular Engineering, College of Marine Science, Zhejiang Ocean University, Zhoushan, China
| | - H Y Li
- Laboratory for Marine Living Resources and Molecular Engineering, College of Marine Science, Zhejiang Ocean University, Zhoushan, China
| | - Y Qin
- Laboratory for Marine Living Resources and Molecular Engineering, College of Marine Science, Zhejiang Ocean University, Zhoushan, China
| | - R X Wang
- Laboratory for Marine Living Resources and Molecular Engineering, College of Marine Science, Zhejiang Ocean University, Zhoushan, China
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Sun YN, Qin Y, Zhu ZH, Sun DQ. Development of polymorphic microsatellite markers and the population genetic structure of the half-fin anchovy, Setipinna taty. Genet Mol Res 2014; 13:6293-302. [PMID: 24737520 DOI: 10.4238/2014.april.3.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Microsatellite markers for the half-fin anchovy Setipinna taty were developed from the enriched (CA)15 genomic library, and they were used for the population genetic studies of the half-fin anchovy from Chinese coastal areas. Samples were collected from five localities of the East China Sea and the Yellow Sea. Eleven simple sequence repeat markers were used to assess genetic differentiation in 30 individuals at each locality. As a result, 59 alleles were recorded over all loci with an average of 5.36 alleles per locus. Observed and expected heterozygosities ranged from 0.27 to 0.73 and 0.50 to 0.89, respectively. Analysis of molecular variation indicated that the variation within individuals was high (70.68%), while variations of individuals within and among populations were low (22.47 and 6.85%). The phylogenetic tree showed that these populations could be divided into two clusters: populations of the East China Sea, which came from Ninghai, Xiangshan and Zhoushan, and populations of the Yellow Sea, which were from Yantai and Weihai. It revealed that significant geographic structure existed in this species. All of the results indicated that high genetic diversity existed in the half-fin anchovy from different geographic populations. This conclusion was consistent with the classification based on morphological and physiological characteristics.
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Affiliation(s)
- Y N Sun
- Laboratory of Fish Biogenetics and Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan, China
| | - Y Qin
- Laboratory of Fish Biogenetics and Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan, China
| | - Z H Zhu
- Laboratory of Fish Biogenetics and Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan, China
| | - D Q Sun
- Laboratory of Fish Biogenetics and Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan, China
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37
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Abstract
OBJECTIVES To measure the prevalence of diaper dermatitis and identify risk factors relating to diaper dermatitis in Chinese children aged 1-24 months. METHODS This was a cross-sectional study that used structured questionnaires during face-to-face interviews with parents to determine the risk factors associated with diaper dermatitis. Univariate and multivariate logistic regression analyses were used to test the association between diaper dermatitis and 15 potential risk factors. RESULTS A total of 43.8% (454/1036) of infants in the study had experienced diaper dermatitis in the 6 weeks prior to enrolment. Multivariate logistic regression analyses showed that the risk of diaper dermatitis was significantly decreased by solid foods (eggs), home location (urban) and frequency of diaper changing (≥ 6 changes/day), whereas the risk was increased by diarrhoea. CONCLUSIONS Diarrhoea was a major risk factor for diaper dermatitis. Confirmation of the risk factors could lead to better understanding of the aetiology of diaper dermatitis and to new prevention strategies in Chinese infants.
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Affiliation(s)
- C H Li
- Graduate School, Peking Union Medical College, Beijing, China
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38
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Zhu ZH, Liu K, Xu W, Luo Z, Guo CC, Yang B, Ma T, Yuan XD, Ye WM. One-way transmission of linearly polarized light in plasmonic subwavelength metallic grating cascaded with dielectric grating. Opt Lett 2012; 37:4008-4010. [PMID: 23027261 DOI: 10.1364/ol.37.004008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We show that optical transmission of linearly polarized light through a plasmonic subwavelength metallic grating cascaded with a dielectric grating at a 45° angle to each other is asymmetric in opposite directions. A key characteristic of this asymmetric transmission is that the polarization of the transmitted light is changed. Simulation results reveal that transmission of 0.92 in one direction and 10(-5) in the opposite direction can be obtained at normal incidence at a wavelength of 1550 nm. Because of their high optical performance and loose fabrication requirements, the structures may provide practical applications in the control of light transmission.
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Affiliation(s)
- Z H Zhu
- College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
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39
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Zhu ZH, Guo CC, Liu K, Ye WM, Yuan XD, Yang B, Ma T. Metallic nanofilm half-wave plate based on magnetic plasmon resonance. Opt Lett 2012; 37:698-700. [PMID: 22344152 DOI: 10.1364/ol.37.000698] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We proposed and fabricated a nanofilm half-wave plate consisting of periodic arrays of orthogonally coupled slit-hole resonator structures in Au film. Experimental results reveal that 95.2% of energy of the incident linearly polarized light is converted to the perpendicular polarization direction after reflection from the nanostructure. The wave plate is single layer with only 180 nm thickness, which is much thinner than the operation wavelength. Our method can be expanded to other resonant structures or transmitted case.
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Affiliation(s)
- Z H Zhu
- College of Opto-Electronic Engineering, National University of Defense Technology, Changsha, China.
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40
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Abstract
We have developed an improved three-dimensional (3D) percolation model to investigate the effect of the alignment of carbon nanotubes (CNTs) on the electrical conductivity of nanocomposites. In this model, both intrinsic and contact resistances are considered, and a new method of resistor network recognition that employs periodically connective paths is developed. This method leads to a reduction in the size effect of the representative cuboid in our Monte Carlo simulations. With this new technique, we were able to effectively analyze the effects of the CNT alignment upon the electrical conductivity of nanocomposites. Our model predicted that the peak value of the conductivity occurs for partially aligned rather than perfectly aligned CNTs. It has also identified the value of the peak and the corresponding alignment for different volume fractions of CNTs. Our model works well for both multi-wall CNTs (MWCNTs) and single-wall CNTs (SWCNTs), and the numerical results show a quantitative agreement with existing experimental observations.
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Affiliation(s)
- W S Bao
- Mechanics and Aerospace Design Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, Canada
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41
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Zhu ZH, Liu H, Wang SM, Ye WM, Yuan XD, Zhu SN. Double-resonance nanolaser based on coupled slit-hole resonator structures. Opt Lett 2010; 35:754-756. [PMID: 20195342 DOI: 10.1364/ol.35.000754] [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] [Indexed: 05/28/2023]
Abstract
This work investigates a kind of metallic magnetic cavity based on slit-hole resonators. Two orthogonal hybrid magnetic resonance modes of the cavity with a large spatial overlap are predesigned at the wavelengths of 980 and 1550 nm. The Yb:Er codoped material serving as a gain medium is set in the cavity; this enables the resonator to have a high optical activity. The numerical result shows that the strong lasing at 1550 nm may be achieved when the cavity array is pumped at 980 nm. This double resonance nanolaser array has potential applications in future optical devices and quantum information techniques.
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Affiliation(s)
- Z H Zhu
- Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
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42
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Du AJ, Sun CH, Zhu ZH, Lu GQ, Rudolph V, Smith SC. The effect of Fe doping on adsorption of CO2/N2 within carbon nanotubes: a density functional theory study with dispersion corrections. Nanotechnology 2009; 20:375701. [PMID: 19706942 DOI: 10.1088/0957-4484/20/37/375701] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
An ab initio density functional theory (DFT) study with correction for dispersive interactions was performed to study the adsorption of N(2) and CO(2) inside an (8, 8) single-walled carbon nanotube. We find that the approach of combining DFT and van der Waals correction is very effective for describing the long-range interaction between N(2)/CO(2) and the carbon nanotube (CNT). Surprisingly, exohedral doping of an Fe atom onto the CNT surface will only affect the adsorption energy of the quadrupolar CO(2) molecule inside the CNT (20-30%), and not that of molecular N(2). Our results suggest the feasibility of enhancement of CO(2)/N(2) separation in CNT-based membranes by using exohedral doping of metal atoms.
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Affiliation(s)
- A J Du
- Centre for Computational Molecular Science, The University of Queensland, Australian Institute for Bioengineering and Nanotechnology Building 75, QLD 4072, Brisbane, Australia.
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43
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Wang S, Zhu ZH. Humic acid adsorption on fly ash and its derived unburned carbon. J Colloid Interface Sci 2007; 315:41-6. [PMID: 17628583 DOI: 10.1016/j.jcis.2007.06.034] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2007] [Revised: 06/03/2007] [Accepted: 06/19/2007] [Indexed: 11/20/2022]
Abstract
Fly ash is solid waste from combustion process, containing oxide minerals and unburned carbon. In this investigation, fly ash has been separated into metal oxide mineral section and unburned carbon. The fly ash with different contents of unburned carbon was employed for humic acid adsorption to investigate the influence of unburned carbon on adsorption. It is found that metal oxides and unburned carbon in fly ash exhibit significant difference in humic acid adsorption. The unburned carbon plays the major role in adsorption. Higher content of unburned carbon in fly ash results in higher surface area and thus higher humic acid adsorption. Fly ash and unburned carbon exhibit adsorption capacity of humic acid of 11 and 72 mg/g, respectively, at 30 degrees C, pH 7. Humic acid adsorption is also affected by ion strength, pH, and temperature. The thermodynamic calculations indicate that the adsorption is endothermic nature with DeltaH(0) and DeltaS(0) as 5.79 kJ/mol and 16.0 J/K mol, respectively.
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Affiliation(s)
- Shaobin Wang
- Department of Chemical Engineering, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia.
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44
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Abstract
The thermoelectric effect of magnesium silicide is studied by using a thermodynamical method in the presence of an electric field. The thermoelectric potential is evaluated from the partial derivative of free energy with respect to charge in which the free energy is calculated at the B3LYP/6-31G(d,p) level of density functional theory. This free energy is also utilized to determine the average dipole moment from which the polarizability, alpha; molar polarization, Psi; and dielectric constant can be computed. The present calculation for the dielectric constant (approximately 24-20) is in very good agreement with the experimental value (20). This accurate dielectric constant can be used to derive the relation of the thermoelectric potential with respect to temperature, from which the thermoelectric power or the Seebeck coefficients are calculated. The present result shows good agreement with experiment measurement for the Seebeck coefficients. In comparison, that calculation from the energy band structure theory is far off from the experimental values.
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Affiliation(s)
- Z H Zhu
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
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45
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Wang S, Li L, Zhu ZH. Solid-state conversion of fly ash to effective adsorbents for Cu removal from wastewater. J Hazard Mater 2007; 139:254-9. [PMID: 16839666 DOI: 10.1016/j.jhazmat.2006.06.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2005] [Revised: 05/22/2006] [Accepted: 06/08/2006] [Indexed: 05/10/2023]
Abstract
Solid-state conversion of fly ash to an amorphous aluminosilicate adsorbent (geopolymer) has been investigated under different conditions and the synthesised material has been tested for Cu2+ removal from aqueous solution. It has been found that higher reaction temperature and Na:FA ratio will make the adsorbents achieving higher removal efficiency. The adsorbent loading and Cu2+ initial concentration will also affect the removal efficiency while the adsorption capacity exhibits similarly at 30-40 degrees C. The adsorption capacity of the synthesised adsorbent shows much higher value than fly ash and natural zeolite. The capacity is 0.1, 3.5 and 92 mg/g, for fly ash, natural zeolite, and FA derived adsorbent, respectively. The kinetic studies indicate that the adsorption can be fitted by the second-order kinetic model. Langmuir and Freundlich isotherms also can fit to the adsorption isotherm.
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Affiliation(s)
- Shaobin Wang
- Department of Chemical Engineering, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia.
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46
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Wang S, Zhu ZH. Characterisation and environmental application of an Australian natural zeolite for basic dye removal from aqueous solution. J Hazard Mater 2006; 136:946-52. [PMID: 16504394 DOI: 10.1016/j.jhazmat.2006.01.038] [Citation(s) in RCA: 154] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2005] [Revised: 11/27/2005] [Accepted: 01/16/2006] [Indexed: 05/06/2023]
Abstract
An Australian natural zeolite was collected, characterised and employed for basic dye adsorption in aqueous solution. The natural zeolite is mainly composed of clinoptiloite, quartz and mordenite and has cation-exchange capacity of 120 meq/100g. The natural zeolite presents higher adsorption capacity for methylene blue than rhodamine B with the maximal adsorption capacity of 2.8 x 10(-5) and 7.9 x 10(-5)mol/g at 50 degrees C for rhodamine B and methylene blue, respectively. Kinetic studies indicated that the adsorption followed the pseudo second-order kinetics and could be described as two-stage diffusion process. The adsorption isotherm could be fitted by the Langmuir and Freundlich models. Thermodynamic calculations showed that the adsorption is endothermic process with Delta H(0) at 2.0 and 8.7 kJ/mol for rhodamine B and methylene blue. It has also found that the regenerated zeolites by high-temperature calcination and Fenton oxidation showed similar adsorption capacity but lower than the fresh sample. Only 60% capacity could be recovered by the two regeneration techniques.
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Affiliation(s)
- Shaobin Wang
- Department of Chemical Engineering, Curtin University of Technology, G.P.O. Box U1987, Perth, WA 6845, Australia.
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47
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Wang S, Soudi M, Li L, Zhu ZH. Coal ash conversion into effective adsorbents for removal of heavy metals and dyes from wastewater. J Hazard Mater 2006; 133:243-51. [PMID: 16310947 DOI: 10.1016/j.jhazmat.2005.10.034] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2005] [Revised: 10/10/2005] [Accepted: 10/11/2005] [Indexed: 05/05/2023]
Abstract
Fly ash was modified by hydrothermal treatment using NaOH solutions under various conditions for zeolite synthesis. The XRD patterns are presented. The results indicated that the samples obtained after treatment are much different. The XRD profiles revealed a number of new reflexes, suggesting a phase transformation probably occurred. Both heat treatment and chemical treatment increased the surface area and pore volume. It was found that zeolite P would be formed at the conditions of higher NaOH concentration and temperature. The treated fly ash was tested for adsorption of heavy metal ions and dyes in aqueous solution. It was shown that fly ash and the modified forms could effectively absorb heavy metals and methylene blue but not effectively adsorb rhodamine B. Modifying fly ash with NaOH solution would significantly enhance the adsorption capacity depending on the treatment temperature, time, and base concentration. The adsorption capacity of methylene blue would increases with pH of the dye solution and the sorption capacity of FA-NaOH could reach 5 x 10(-5) mol/g. The adsorption isotherm could be described by the Langmuir and Freundlich isotherm equations. Removal of copper and nickel ions could also be achieved on those treated fly ash. The removal efficiency for copper and nickel ions could be from 30% to 90% depending on the initial concentrations. The increase in adsorption temperature will enhance the adsorption efficiency for both heavy metals. The pseudo second-order kinetics would be better for fitting the dynamic adsorption of Cu and Ni ions.
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Affiliation(s)
- Shaobin Wang
- Department of Chemical Engineering, Curtin University of Technology, Perth, WA, Australia.
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48
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Abstract
Boron substitution in carbon materials has been comprehensively investigated using the density functional theory method. It was found that there is a correlation between the stability of the graphene sheet, the distribution of pi electrons, the electrostatic potential, and the capability for hydrogen-atom adsorption. Boron substitution destabilizes the graphene structure, increases the density of the electron wave around the substitutional boron atoms, and lowers the electrostatic potential, thus improving the hydrogen adsorption energy on carbon. However, this improvement is only ca. 10-20% instead of a factor of 4 or 5. Our calculations also show that two substitutional boron atoms provide consistent and reliable results, but one substitutional boron results in contradictory conclusions. This is a warning to other computational chemists who work on boron substitution that the conclusion from one substitutional boron might not be reliable.
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Affiliation(s)
- Z H Zhu
- ARC Centre for Functional Nanomaterials, University of Queensland, Brisbane 4072, Australia.
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49
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Wang S, Li L, Wu H, Zhu ZH. Unburned carbon as a low-cost adsorbent for treatment of methylene blue-containing wastewater. J Colloid Interface Sci 2005; 292:336-43. [PMID: 16055141 DOI: 10.1016/j.jcis.2005.06.014] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2005] [Revised: 06/03/2005] [Accepted: 06/03/2005] [Indexed: 11/17/2022]
Abstract
Fly ash, natural zeolite, and unburned carbon separated from fly ash have been employed as low-cost adsorbents for dye adsorption in methylene blue-containing wastewater. It is found that the unburned carbon exhibits a much higher adsorption capacity than raw fly ash and natural zeolite. The adsorption capacities of fly ash, natural zeolite, and unburned carbon for methylene blue are 2 x 10(-5), 5 x 10(-5), and 2.5 x 10(-4) mol/g, respectively. Investigation also indicates that adsorption is influenced by initial dye concentration, particle size, dye solution pH, and adsorption temperature. Adsorption on unburned carbon increases with the initial dye concentration, solution pH, and temperature, but reduces with the increasing particle size. Kinetic studies show that adsorption of methylene blue on fly ash, natural zeolite, and unburned carbon can be best described by the pseudo-second-order adsorption model and that adsorption is a two-step diffusion process. The apparent activation energies for methylene blue adsorption on unburned carbon in the first and second diffusion processes are 12.4 and 39.3 kJ/mol, respectively.
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Affiliation(s)
- Shaobin Wang
- Department of Chemical Engineering, Curtin University of Technology, G.P.O. Box U1987, Perth, WA 6845, Australia.
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50
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Wang S, Zhu ZH. Sonochemical treatment of fly ash for dye removal from wastewater. J Hazard Mater 2005; 126:91-5. [PMID: 16046059 DOI: 10.1016/j.jhazmat.2005.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2005] [Revised: 05/23/2005] [Accepted: 06/07/2005] [Indexed: 05/03/2023]
Abstract
Fly ash samples modified by NaOH solution and sonochemical treatment were tested for a basic dye (methylene blue) adsorption in aqueous solution. It is found that sonochemical treatment of fly ash can significantly increase the adsorption capacity depending on the concentration of NaOH and treatment time. The untreated FA and the sonochemically treated sample exhibits adsorption capacity at 6 x 10(-6)mol/g and 1.2 x 10(-5)mol/g at 30 degrees C, respectively. The adsorption tests show that solution pH and adsorption temperature also influence the adsorption behaviour. The adsorption isotherms can be fitted by Langmuir and Freudlich models, while the two-site Langmuir heterogeneous model will present the best result.
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Affiliation(s)
- Shaobin Wang
- Department of Chemical Engineering, Curtin University of Technology, G.P.O. Box U1987, Perth, WA 6845, Australia.
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