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Guan F, Pei Y, Duan J, Sand W, Zhang R, Zhai X, Zhang Y, Hou B. Effect of yeast extract on microbiologically influenced corrosion of X70 pipeline steel by Desulfovibrio bizertensis SY-1. Bioelectrochemistry 2024; 157:108650. [PMID: 38286079 DOI: 10.1016/j.bioelechem.2024.108650] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/31/2024]
Abstract
Microbiologically influenced corrosion (MIC) is a complicated process that happens ubiquitously and quietly in many fields. As a useful nutritional ingredient in microbial culture media, yeast extract (YE) is a routinely added in the MIC field. However, how the YE participated in MIC is not fully clarified. In the present work, the effect of YE on the growth of sulfate reducing prokaryotes (SRP) Desulfovibrio bizertensis SY-1 and corrosion behavior of X70 pipeline steel were studied. It was found that the weight loss of steel coupons in sterile media was doubled when YE was removed from culture media. However, in the SRP assays without YE the number of planktonic cells decreased, but the attachment of bacteria on steel surfaces was enhanced significantly. Besides, the corrosion rate of steel in SRP assays increased fourfold after removing YE from culture media. MIC was not determined for assays with planktonic SRP but only for biofilm assays. The results confirm the effect of YE on D. bizertensis SY-1 growth and also the inhibitory role of YE on MIC.
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Affiliation(s)
- Fang Guan
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, 98 Daling Road, Nanning 530007, China; Research Development Center of Marine Science and Technology, Institute of Oceanology, Chinese Academy of Sciences, Nantong 226019, China
| | - Yingying Pei
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
| | - Jizhou Duan
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China.
| | - Wolfgang Sand
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Aquatische Biotechnologie Biofilm Centre, University Duisburg-Essen, 45141 Essen, Germany; Technical University and Mining Academy, 09599 Freiberg, Germany.
| | - Ruiyong Zhang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, 98 Daling Road, Nanning 530007, China
| | - Xiaofan Zhai
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
| | - Yimeng Zhang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
| | - Baorong Hou
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
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Guan F, Fan M, Zhang W, Cui G. Choriocarcinoma That Had Transferred to the Right Inferior Pulmonary Vein and Left Atrium: A Case Report. Altern Ther Health Med 2024:AT10239. [PMID: 38581310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2024]
Abstract
Here, we present a case of choriocarcinoma with metastasis only to the right inferior pulmonary vein and heart, which is unusual, as the skipping of lung metastasis is extremely rare. The 34-year-old patient presented with cough and hemoptysis. The diagnosis was challenging due to the absence of gynecological abnormalities and elevated β-HCG levels, only revealing a cardiac mass upon imaging. While no abnormalities were found through gynecological ultrasound or gynecological examination, the serum human chorionic gonadotropin β subunit (β-HCG) level was abnormally raised. Echocardiography showed a left atrial myxoma with a size of approximately 6.3×1.81 cm. A left atrial mass resection was performed during cardiac surgery, where it was found that the left atrial mass had originated from the right inferior pulmonary vein. It was approximately 6×3×3 cm in size, with a flesh-red color and firm tissue. Postoperative pathology and immunohistochemistry indicated choriocarcinoma. The cardiac surgery unearthed a mass originating from the right inferior pulmonary vein. Its size and characteristics, along with the chemotherapy regimens that followed, are crucial details for understanding treatment approaches for such atypical cases. Highlight the patient's recovery post-treatment and the effectiveness of the chemotherapy regimen. This offers insights into the potential for successful treatment outcomes in atypical choriocarcinoma cases. The patient underwent chemotherapy regimens with etoposide, cisplatin (EP) ,etoposide, and methotrexate, and dactinomycin alternating with cyclophosphamide and vincristine (EMACO). A satisfactory result was achieved. This case enhances understanding of choriocarcinoma metastasis patterns. It underscores the need for a multidisciplinary approach in diagnosing and managing such rare presentations.
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Guo D, Zhang Y, Dong X, Liu X, Pei Y, Duan J, Guan F. Accelerated deterioration corrosion of X70 steel by oxidation acid-producing process catalyzed by Acinetobacter soli in oil-water environment. Bioelectrochemistry 2023; 154:108539. [PMID: 37579554 DOI: 10.1016/j.bioelechem.2023.108539] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/31/2023] [Accepted: 08/02/2023] [Indexed: 08/16/2023]
Abstract
Deterioration corrosion occurs between the external surface of oil pipelines and aerobic oil-degrading microorganisms in oil fields. Microorganisms with aerobic oil pollution remediation capabilities may catalyze more serious anaerobic microbial corrosion due to the carbon source supply. In this study, Acinetobacter soli strains were isolated from oil-contaminated environments, and their role in the deterioration corrosion behavior of X70 steel in an oil-water environment was investigated using the EDS multipoint scanning method. The presence of oil controls the deposition of carbon and phosphorus and diffusion of oxygen, leading to significant adhesion attraction and initial growth inhibition of biofilm on the metal surface. A. soli facilitates oxygen transfer and iron ion dissolution, thereby accelerating the pitting corrosion of X70 steel. This corrosion of the X70 steel, in turn, further accelerates the microbial degradation of oil, inhibiting the appearance of calcareous scale in the later stage of corrosion. The corrosion of X70 steel is influenced by microbial degradation, and the specific corrosion behaviors are related to the activity of A. soli in the petroleum environment. This study sheds light on the corrosion mechanisms of X70 steel by A. soli at different stages, providing insights into the interactions between microorganisms, oil pollution, and metal corrosion in oil fields.
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Affiliation(s)
- Ding Guo
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao, China; University of Chinese Academy of Sciences, Beijing, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Yimeng Zhang
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.
| | - Xucheng Dong
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao, China; University of Chinese Academy of Sciences, Beijing, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Xiangju Liu
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Yingying Pei
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao, China; University of Chinese Academy of Sciences, Beijing, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Jizhou Duan
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.
| | - Fang Guan
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
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Wang N, Ma S, Zhang R, Wang L, Wang Y, Yang L, Li J, Guan F, Duan J, Hou B. Regulating N Species in N-Doped Carbon Electro-Catalysts for High-Efficiency Synthesis of Hydrogen Peroxide in Simulated Seawater. Adv Sci (Weinh) 2023; 10:e2302446. [PMID: 37767950 PMCID: PMC10625060 DOI: 10.1002/advs.202302446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/28/2023] [Indexed: 09/29/2023]
Abstract
Electrochemical oxygen reduction reaction (ORR) is an attractive and alternative route for the on-site production of hydrogen peroxide (H2 O2 ). The electrochemical synthesis of H2 O2 in neutral electrolyte is in early studying stage and promising in ocean-energy application. Herein, N-doped carbon materials (N-Cx ) with different N types are prepared through the pyrolysis of zeolitic imidazolate frameworks. The N-Cx catalysts, especially N-C800 , exhibit an attracting 2e- ORR catalytic activity, corresponding to a high H2 O2 selectivity (≈95%) and preferable stability in 0.5 m NaCl solution. Additionally, the N-C800 possesses an attractive H2 O2 production amount up to 631.2 mmol g-1 h-1 and high Faraday efficiency (79.8%) in H-type cell. The remarkable 2e- ORR electrocatalytic performance of N-Cx catalysts is associated with the N species and N content in the materials. Density functional theory calculations suggest carbon atoms adjacent to graphitic N are the main catalytic sites and exhibit a smaller activation energy, which are more responsible than those in pyridinic N and pyrrolic N doped carbon materials. Furthermore, the N-C800 catalyst demonstrates an effective antibacterial performance for marine bacteria in simulated seawater. This work provides a new insight for electro-generation of H2 O2 in neutral electrolyte and triggers a great promise in ocean-energy application.
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Affiliation(s)
- Nan Wang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
| | - Shaobo Ma
- Science Center for Material Creation and Energy ConversionInstitute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao266237China
| | - Ruiyong Zhang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
| | - Lifei Wang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
| | - Yanan Wang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
| | - Lihui Yang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
| | - Jianhua Li
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
| | - Fang Guan
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
| | - Jizhou Duan
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
| | - Baorong Hou
- CAS Key Laboratory of Marine Environmental Corrosion and Bio‐FoulingInstitute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao266071China
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Guan F, Zhang Z, Lin Y, Liu X, Wang X, Yang Y, Carrière Y, Wu Y. Susceptibility and diagnostic concentration for Bacillus thuringiensis toxins and newer chemical insecticides in Spodoptera frugiperda (Lepidoptera: Noctuidae) from China. J Econ Entomol 2023; 116:1830-1837. [PMID: 37738568 DOI: 10.1093/jee/toad176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/16/2023] [Accepted: 08/30/2023] [Indexed: 09/24/2023]
Abstract
The fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), is a cosmopolitan pest that exploits more than 350 host plants, including economically important crops such as corn, cotton and rice. Control of S. frugiperda largely relies on transgenic crops producing insecticidal proteins from Bacillus thuringiensis (Bt) and spraying synthetic insecticides. Here, we established the susceptibility and diagnostic concentration for 2 Bt toxins and 5 newer insecticides in invasive populations of S. frugiperda from southeastern China. Concentrations causing 50% mortality (LC50) in ten field populations sampled in 2022 ranged from 2.13 to 19.29 and 22.43 to 71.12 ng/cm2 for Cry1Fa and Vip3Aa, and 0.83 to 5.30, 2.83 to 9.94, 0.04 to 0.23, 4.59 to 8.40, and 1.49 to 6.79 mg/liter for chlorantraniliprole, chlorfenapyr, emamectin benzoate, indoxacarb, and spinosad, respectively. Relative to the susceptible strain YJ-19, the largest resistance ratio in the field populations was 5.1, 1.6, 6.2, 3.9, 4.6, 2.2, and 3.6 for Cry1Fa, Vip3Aa, chlorantraniliprole, chlorfenapyr, emamectin benzoate, indoxacarb, and spinosad, respectively, indicating that the field populations were generally susceptible to these Bt toxins and insecticides. Based on the pooled response of the field populations, the diagnostic concentration for resistance monitoring, estimated as ca. twice the LC99, was 400 and 1,500 ng/cm2 for Cry1Fa and Vip3Aa, and 2, 40, 60, 60, and 100 mg/liter for emamectin benzoate, chlorantraniliprole, chlorfenapyr, spinosad, and indoxacarb, respectively. These results provide useful information for monitoring resistance to key Bt toxins and insecticides for the control of S. frugiperda in China.
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Affiliation(s)
- Fang Guan
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Zheng Zhang
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Yuhang Lin
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiangjie Liu
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Xingliang Wang
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Yihua Yang
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Yves Carrière
- Department of Entomology, University of Arizona, Tucson, AZ, USA
| | - Yidong Wu
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
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Qi X, Chen J, Guan F, Shi L, Li Y, Liu Y, Xiong L, Lai Z, Wang X, Jiang X. Compact high-resolution spectrometer based on super-prism and local-super-collimation effects of photonic crystal. Opt Express 2023; 31:34577-34588. [PMID: 37859210 DOI: 10.1364/oe.501441] [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: 08/01/2023] [Accepted: 09/19/2023] [Indexed: 10/21/2023]
Abstract
We propose a design of the compact high-resolution photonic crystal (PhC) spectrometer with a wide working bandwidth based on both super-prism and local-super-collimation (LSC) effects. The optimizing methods, finding the ideal incident angle and oblique angle of PhC for a wider working bandwidth and ideal incident beam width and PhC size for a certain resolution requirement, are developed. Besides the theoretical work, for the first time, the experiment of such a PhC spectrometer is conducted in the microwave frequency range, and the beam-splitting effects for different frequencies in a wide working bandwidth agree very well with the theoretical predictions. According to the scalability, with the condition to control the deviations in the fabrication processes the design could be extended to optical frequency ranges, e.g., infrared, visible-light, and ultraviolet ranges. The spectrometer in optical frequencies can be implemented on silicon-on-insulator (SOI) chips as a thin-slab structure so that the operating bandwidth can be expanded further through the multi-layer design. Theoretically, the size of the ultra-high-resolution PhC spectrometer in optical frequency ranges based on our design could be two orders smaller than the traditional design.
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Wang D, Guan F, Feng C, Mathivanan K, Zhang R, Sand W. Review on Microbially Influenced Concrete Corrosion. Microorganisms 2023; 11:2076. [PMID: 37630635 PMCID: PMC10458460 DOI: 10.3390/microorganisms11082076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Microbially influenced concrete corrosion (MICC) causes substantial financial losses to modern societies. Concrete corrosion with various environmental factors has been studied extensively over several decades. With the enhancement of public awareness on the environmental and economic impacts of microbial corrosion, MICC draws increasingly public attention. In this review, the roles of various microbial communities on MICC and corresponding protective measures against MICC are described. Also, the current status and research methodology of MICC are discussed. Thus, this review aims at providing insight into MICC and its mechanisms as well as the development of protection possibilities.
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Affiliation(s)
- Dongsheng Wang
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (D.W.); (F.G.); (K.M.)
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China;
| | - Fang Guan
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (D.W.); (F.G.); (K.M.)
- Guangxi Key Laboratory of Marine Environmental Science, Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, Nanning 530007, China
| | - Chao Feng
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China;
| | - Krishnamurthy Mathivanan
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (D.W.); (F.G.); (K.M.)
| | - Ruiyong Zhang
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (D.W.); (F.G.); (K.M.)
- Guangxi Key Laboratory of Marine Environmental Science, Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, Nanning 530007, China
| | - Wolfgang Sand
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (D.W.); (F.G.); (K.M.)
- Aquatic Biotechnology, University of Duisburg-Essen, 45141 Essen, Germany
- Institute of Biosciences, Freiberg University of Mining and Technology, 09599 Freiberg, Germany
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Wang J, Li X, Guan F, Yang Z, Zhai X, Zhang Y, Tang X, Duan J, Xiao H. The Isolation of Anaerobic and Facultative Anaerobic Sulfate-Reducing Bacteria (SRB) and a Comparison of Related Enzymes in Their Sulfate Reduction Pathways. Microorganisms 2023; 11:2019. [PMID: 37630579 PMCID: PMC10458228 DOI: 10.3390/microorganisms11082019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
Sulfate-reducing bacteria (SRB) are an important group of microorganisms that cause microbial corrosion. In this study, culturable SRB were isolated and identified from the inner rust layer of three kinds of steel and from sediments, and a comparison of amino acid sequences encoding related enzymes in the sulfate reduction pathway between anaerobic and facultative anaerobic SRB strains was carried out. The main results are as follows. (1) Seventy-seven strains were isolated, belonging to five genera and seven species, with the majority being Desulfovibrio marinisediminis. For the first time, Holodesulfovibrio spirochaetisodalis and Acinetobacter bereziniae were separated from the inner rust layer of metal, and sulfate reduction by A. bereziniae, Virgibacillus dokdonensis, and Virgibacillus chiguensis, etc., was also demonstrated for the first time. (2) Three strains of strictly anaerobic bacteria and four strains of facultative anaerobic bacteria were screened from seven bacterial strains. (3) Most of the anaerobic SRB only contained enzymes for the dissimilatory sulfate reduction pathway, while those of facultative anaerobic bacteria capable of producing hydrogen sulfide included two possible ways: containing the related enzymes from the dissimilatory pathway only, or containing enzymes from both dissimilatory and assimilation pathways. This study newly discovered that some bacterial genera exhibit sulfate reduction ability and found that there are differences in the distribution of enzymes related to the sulfate reduction pathway between anaerobic and facultative anaerobic SRB type trains, providing a basis for the development and utilization of sulfate-reducing bacterial resources and furthering our understanding of the metabolic mechanisms of SRB.
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Affiliation(s)
- Jing Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
| | - Xiaohong Li
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Fang Guan
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
- Laoshan Laboratory, Qingdao 266000, China
| | - Zhibo Yang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Xiaofan Zhai
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
- Laoshan Laboratory, Qingdao 266000, China
| | - Yimeng Zhang
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
- Laoshan Laboratory, Qingdao 266000, China
| | - Xuexi Tang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
- Laoshan Laboratory, Qingdao 266000, China
| | - Jizhou Duan
- Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
- Laoshan Laboratory, Qingdao 266000, China
| | - Hui Xiao
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
- Laoshan Laboratory, Qingdao 266000, China
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Guan F, Dai X, Hou B, Wu S, Yang Y, Lu Y, Wu K, Tabashnik BE, Wu Y. Refuges of conventional host plants counter dominant resistance of cotton bollworm to transgenic Bt cotton. iScience 2023; 26:106768. [PMID: 37216101 PMCID: PMC10196555 DOI: 10.1016/j.isci.2023.106768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/08/2023] [Accepted: 04/24/2023] [Indexed: 05/24/2023] Open
Abstract
Transgenic crops have revolutionized insect pest control, but evolution of resistance by pests threatens their continued success. The primary strategy for combating pest resistance to crops producing insecticidal proteins from Bacillus thuringiensis (Bt) uses refuges of non-Bt host plants to allow survival of susceptible insects. The prevailing paradigm is that refuges delay resistance that is rare and recessively inherited. However, we discovered refuges countered resistance to Bt cotton that was neither rare nor recessive. In a 15-year field study of the cotton bollworm, the frequency of a mutation conferring dominant resistance to Bt cotton surged 100-fold from 2006 to 2016 yet did not rise from 2016 to 2020. Computer simulations indicate the increased refuge percentage from 2016 to 2020 is sufficient to explain the observed halt in the evolution of resistance. The results also demonstrate the efficacy of a Bt crop can be sustained by non-Bt refuges of other crops.
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Affiliation(s)
- Fang Guan
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Xiaoguang Dai
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Bofeng Hou
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Shuwen Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yihua Yang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yanhui Lu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Kongming Wu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | | | - Yidong Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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Guan F, Dai X, Yang Y, Tabashnik BE, Wu Y. Population Genomics of Nonrecessive Resistance to Bt Toxin Cry1Ac in Helicoverpa armigera From Northern China. J Econ Entomol 2023; 116:310-320. [PMID: 36610305 DOI: 10.1093/jee/toac182] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Indexed: 05/30/2023]
Abstract
Transgenic crops that produce insecticidal proteins from Bacillus thuringiensis (Bt) have provided control of some key pests since 1996. However, the evolution of resistance by pests reduces the benefits of Bt crops. Resistance to Bt crops that is not recessively inherited is especially challenging to manage. Here we analyzed nonrecessive resistance to Bt toxin Cry1Ac in eight field populations of Helicoverpa armigera sampled in 2018 from northern China, where this global pest has been exposed to Cry1Ac in Bt cotton since 1997. Bioassays revealed 7.5% of field-derived larvae were resistant to Cry1Ac of which 87% had at least one allele conferring nonrecessive resistance. To analyze this nonrecessive resistance, we developed and applied a variant of a genomic mapping approach called quantitative trait locus (QTL)-seq. This analysis identified a region on chromosome 10 associated with nonrecessive resistance to Cry1Ac in all 21 backcross families derived from field-collected moths. Individual sequencing revealed that all 21 field-collected resistant grandparents of the backcross families had a previously identified dominant point mutation in the tetraspanin gene HaTSPAN1 that occurs in the region of chromosome 10 identified by QTL-seq. QTL-seq also revealed a region on chromosome 26 associated with nonrecessive resistance in at most 14% of the backcross families. Overall, the results imply the point mutation in HaTSPAN1 is the primary genetic basis of nonrecessive resistance to Cry1Ac in field populations of H. armigera from northern China. Moreover, because nonrecessive resistance is predominant, tracking the frequency of this point mutation could facilitate resistance monitoring in the region.
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Affiliation(s)
- Fang Guan
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoguang Dai
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Yihua Yang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Bruce E Tabashnik
- Department of Entomology, University of Arizona, Tucson, AZ 85721, USA
| | - Yidong Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
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11
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Wu S, Li X, Guan F, Feng J, Jia J, Li J, Liu L. [Enhanced endoplasmic reticulum RyR1 receptor phosphorylation leads to diaphragmatic dysfunction in septic rats]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:631-636. [PMID: 37202200 DOI: 10.12122/j.issn.1673-4254.2023.04.17] [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: 05/20/2023]
Abstract
OBJECTIVE To explore the role of endoplasmic reticulum ryanodine receptor 1 (RyR1) expression and phosphorylation in sepsis- induced diaphragm dysfunction. METHODS Thirty SPF male SD rats were randomized equally into 5 groups, including a sham-operated group, 3 sepsis model groups observed at 6, 12, or 24 h following cecal ligation and perforation (CLP; CLP-6h, CLP-12h, and CLP-24h groups, respectively), and a CLP-24h group with a single intraperitoneal injection of KN- 93 immediately after the operation (CLP-24h+KN-93 group). At the indicated time points, diaphragm samples were collected for measurement of compound muscle action potential (CMAP), fatigue index of the isolated diaphragm and fitted frequencycontraction curves. The protein expression levels of CaMK Ⅱ, RyR1 and P-RyR1 in the diaphragm were detected using Western blotting. RESULTS In the rat models of sepsis, the amplitude of diaphragm CMAP decreased and its duration increased with time following CLP, and the changes were the most obvious at 24 h and significantly attenuated by KN-93 treatment (P < 0.05). The diaphragm fatigue index increased progressively following CLP (P < 0.05) irrespective of KN- 93 treatment (P>0.05). The frequency-contraction curve of the diaphragm muscle decreased progressively following CLP, and was significantly lower in CLP-24 h group than in CLP-24 h+KN-93 group (P < 0.05). Compared with that in the sham-operated group, RyR1 expression level in the diaphragm was significantly lowered at 24 h (P < 0.05) but not at 6 or 12 following CLP, irrespective of KN-93 treatment; The expression level of P-RyR1 increased gradually with time after CLP, and was significantly lowered by KN-93 treatment at 24 h following CLP (P < 0.05). The expression level of CaMKⅡ increased significantly at 24 h following CLP, and was obviously lowered by KN-93 treatment (P < 0.05). CONCLUSION Sepsis causes diaphragmatic dysfunction by enhancing CaMK Ⅱ expression and RyR1 receptor phosphorylation in the endoplasmic reticulum of the diaphragm.
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Affiliation(s)
- S Wu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - X Li
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - F Guan
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - J Feng
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - J Jia
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - J Li
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou 646000, China
| | - L Liu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
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12
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Abstract
Human endogenous retroviruses (HERVs) are estimated to comprise ∼8% of the entire human genome, but the vast majority of them remain transcriptionally silent in most normal tissues due to accumulated mutations. However, HERVs can be frequently activated and detected in various tissues under certain conditions. Nucleic acids or proteins produced by HERVs can bind to pattern recognition receptors of immune cells or other cells and initiate an innate immune response, which may be involved in some pathogenesis of diseases, especially cancer and autoimmune diseases. In this review, we collect studies of the interaction between HERV elements and Toll-like receptors and attempt to provide an overview of their role in the immunopathological mechanisms of inflammatory and autoimmune diseases.
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Affiliation(s)
- Xinyi Jin
- Department of Laboratory Medicine, School of Medicine, Shaoxing University, Shaoxing, P.R. China
| | - Xueyuan Li
- Department of Laboratory Medicine, School of Medicine, Shaoxing University, Shaoxing, P.R. China
| | - Fang Guan
- Department of Laboratory Medicine, School of Medicine, Shaoxing University, Shaoxing, P.R. China
| | - Jianhua Zhang
- Department of Laboratory Medicine, School of Medicine, Shaoxing University, Shaoxing, P.R. China
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13
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Bronk J, Bronk L, Singh S, Guan F, Wang X, Zhu X, Schueler E, Jiang D, Mohan R, Koong A, Lang F, Grosshans D. Enhanced Radiation-Sparing Effects of Ultra-High Dose Rate Proton Radiation (FLASH-RT) in a Human Induced Pluripotent Stem Cell-Derived Cerebral Organoid Model. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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14
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Liang X, Guan F, Hu ZQ, Li B, Li YK, Jing B, Huang H, Zhu GT, Mao BB. [The related factors of postoperative recurrence in trigeminalneuralgia patients undergoing fully neuroendoscopic microvascular decompression]. Zhonghua Yi Xue Za Zhi 2022; 102:2465-2469. [PMID: 36000377 DOI: 10.3760/cma.j.cn112137-20211218-02820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To evaluate the related factors of postoperative recurrence intrigeminal neuralgia (TN) patients treated with fully neuroendoscopic microvascular decompression (MVD). Methods: The clinical baseline data and preoperative MRI imaging data of 112 patients with TN treated by neuroendoscopic MVD from December 2008 to December 2020 in the Department of Neurosurgery, Beijing Shijitan Hospital Affiliated to Capital Medical University were retrospectively analyzed, including: area ratio of cerebellopontine area (CPA)(healthy side/affected side), trigeminal nerve(TGN)length ratio(healthy side/affected side), TGN angle ratio(healthy side/affected side), and criminal vessel type. Multivariate Cox proportional hazards model was used to analyze the factors affecting postoperative recurrence. Results: Among the 112 patients in this group, there were 49 males and 63 females. The age ranged from 20 to 82 (59±9) years, and the course of disease was 0.05 to 30.00 (5.60±5.15) years. Pain was located on the left side in 43 cases (38.39%) and on the right side in 69 cases (61.61%), respectively. All patients were followed up for more than 1 year, with an average follow-up time of 21.5 months, and 11 cases recurred. Multivariate Cox regression analysis revealed that disease duration≥3 years(HR=9.34, 95%CI:1.12-39.07), CPA area ratio(healthy side/affected side)>1 (HR=27.47, 95%CI:1.69-44.20), criminal vessel type with vein(HR=35.39, 95%CI:1.26-18.60) and criminal vessel type with arteriovenous (HR=46.07, 95%CI: 2.74-27.75) were the main factors influencing recurrence of MVD surgery (all P<0.05). Conclusion: The disease duration≥3 years, CPA area ratio(healthy side/affected side)>1, and criminal vessel type with vein/arteriovenous are the relevant factors that affect the recurrence rate after the fully neuroendoscopic MVD treatment for trigeminal neuralgia.
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Affiliation(s)
- X Liang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - F Guan
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Z Q Hu
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B Li
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Y K Li
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B Jing
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - H Huang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - G T Zhu
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B B Mao
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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15
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Gong T, Li H, Wang G, Guan F, Huang W, Zhang X. An anti-scratch flexible SERS substrate for pesticide residue detection on the surface of fruits and vegetables. Nanotechnology 2022; 33:405501. [PMID: 35767929 DOI: 10.1088/1361-6528/ac7cf3] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
We propose an anti-scratch flexible surface-enhanced Raman scattering substrate with arrayed nanocavity microstructures fabricated by colloidal lithography. The nanocavity microstructure of the substrate can well protect the inner gold nanoparticles during wipe sampling. The prepared flexible substrate was able to detect 4-aminothiophenol (4-ATP) with a concentration down to 1 fM. Furthermore, the substrate was used to detect 6-BA residues on the surface of apples and bean sprouts through wipe sampling, which shows great potential in the field of rapid on-site detection, especially in the detection of pesticide residues on the surface of fruits and vegetables.
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Affiliation(s)
- Tianxun Gong
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering (National Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Haonan Li
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering (National Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Guilin Wang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering (National Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Fang Guan
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering (National Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Wen Huang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering (National Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Xiaosheng Zhang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering (National Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu, People's Republic of China
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16
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Chen O, Guan F, Hu Y, Wu T, Liu L, Sheng J, Chen J. The relationship between belief and prosocial behavior. Curr Psychol 2022. [DOI: 10.1007/s12144-020-00943-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Zhang Z, Che Z, Chen J, Zeng J, Huang H, Guan F, Shi L, Liu X, Zi J. Realization of ultrawide-angle high transmission and its applications in 5G millimeter-wave communications. Opt Express 2022; 30:14002-14018. [PMID: 35473154 DOI: 10.1364/oe.454720] [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: 01/26/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
By using single-layer metasurfaces, we realized ultrawide-angle high-transmission in the millimeter-wave band, which allowed more than 98% transmission of dual-polarized electromagnetic waves for almost all incident angles. The multipolar expansion method was used to analyze and verify the condition of the generalized Kerker effect at the corresponding reflected angles. Using quartz glass substrates with the same metallic periodic structures, electromagnetic windows are proposed that can improve any-directed 5G millimeter-wave communication signals from outdoor to indoor environments. The proposed interpretations can connect the Kerker effect with actual applications and enable the design of easy-to-integrate all-angle Kerker effect metasurface devices.
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18
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Ma S, Li Y, Guan F, Zhang L, Li J, Tai Y, Ren H, Duan J. Variations in microbial community on different materials in Sanya Marine Environment Experimental Station, China. Can J Microbiol 2022; 68:447-455. [PMID: 35412394 DOI: 10.1139/cjm-2022-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Marine biofouling occurs through the colonization of undesired microorganisms on the surfaces of structures. In this study, four immersion cycles (2, 5, 15, and 25 days) of total immersion in seawater were carried out at the Sanya Marine Environmental Test Station using three materials: industrial pure titanium (Ti), hot-dip zinc (Zn), and glass slide (GS). Three phyla, four classes, and nine bacterial genera were identified. The dominant genera were Pseudomonas, Alteromonas, and Pseudoalteromonas. The number of bacteria increased with soaking time. Sixty-one species of diatoms belonging to 30 genera, 24 families, and 16 orders were detected, among which the dominant genera were Amphora, Nitzschia, and Navicula. Four genera of ciliates belonged to two classes, three orders, and four families, among which the dominant species were Euplotes sp. and Uronema marinum. Tubular polychaetes was the dominant metazoans. Species diversity increased over time. The highest biofilm diversity was observed on the GS surface. The diversity of biofilms on the Ti surface was higher than that on the Zn surface. This study provides basic data for marine material research, marine corrosion, and national defence construction.
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Affiliation(s)
- Shide Ma
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China.,Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Yuhang Li
- Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Fang Guan
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China.,Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Linlin Zhang
- College of Safety and Environment Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Ju Li
- Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Yu Tai
- Qingdao Tony Machinery and Equipment Co., Ltd., Qingdao, 266000, China
| | - Haitao Ren
- Luoyang Ship Material Research Institute (LSMRI), Sanya, 572032, China
| | - Jizhou Duan
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China.,Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
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19
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Zhang J, Zhang F, Tay WT, Robin C, Shi Y, Guan F, Yang Y, Wu Y. Population genomics provides insights into lineage divergence and local adaptation within the cotton bollworm. Mol Ecol Resour 2022; 22:1875-1891. [PMID: 35007400 DOI: 10.1111/1755-0998.13581] [Citation(s) in RCA: 11] [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: 07/06/2021] [Revised: 12/20/2021] [Accepted: 01/05/2022] [Indexed: 11/28/2022]
Abstract
The cotton bollworm Helicoverpa armigera is a cosmopolitan pest and its diverse habitats plausibly contribute to the formation of diverse lineages. Despite the significant threat it poses to economic crops worldwide, its evolutionary history and genetic basis of local adaptation are poorly understood. In this study, we de novo assembled a high-quality chromosome-level reference genome of H. a. armigera (contig N50 = 7.34 Mb), with 99.13% of the HaSCD2 assembly assigned into 31 chromosomes (Z-chromosome + 30 autosomes). We constructed an ultra-dense variation map across 14 cotton bollworm populations and identified a novel lineage in northwestern China. Historical inference showed that effective population size changes coincided with global temperature fluctuation. We identified nine differentiated genes in the three H. armigera lineages (H. a. armigera, H. a. conferta, and the new northwestern Chinese lineage), of which per and clk genes are involved in circadian rhythm. Selective sweep analyses identified a series of GO categories related to climate adaptation, feeding behavior and insecticide tolerance. Our findings reveal fundamental knowledge of the local adaptation of different cotton bollworm lineages and will guide the formulation of cotton bollworm management measures at different scales.
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Affiliation(s)
- Jianpeng Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wee Tek Tay
- CSIRO Black Mountain Laboratories, Clunies Ross Street, ACT, 2601, Australia
| | - Charles Robin
- School of BioSciences, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Yu Shi
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fang Guan
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yihua Yang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yidong Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
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20
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Xu L, Guan F, Ma Y, Zhang R, Zhang Y, Zhai X, Dong X, Wang Y, Duan J, Hou B. Inadequate dosing of THPS treatment increases microbially influenced corrosion of pipeline steel by inducing biofilm growth of Desulfovibrio hontreensis SY-21. Bioelectrochemistry 2022; 145:108048. [DOI: 10.1016/j.bioelechem.2021.108048] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 12/25/2021] [Accepted: 12/29/2021] [Indexed: 01/21/2023]
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21
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Zhang B, Xu W, Zhu Q, Guan F, Zhang Y. Nepenthes pitcher-inspired lubricant-infused slippery surface with superior anti-corrosion durability, hot water repellency and scratch resistance. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.11.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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22
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Wang J, Zhao M, Liu W, Guan F, Liu X, Shi L, Chan CT, Zi J. Shifting beams at normal incidence via controlling momentum-space geometric phases. Nat Commun 2021; 12:6046. [PMID: 34663832 PMCID: PMC8523713 DOI: 10.1038/s41467-021-26406-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 09/27/2021] [Indexed: 11/08/2022] Open
Abstract
When hitting interfaces between two different media, light beams may undergo small shifts. Such beam shifts cannot be described by the geometrical optics based on Snell's law and their underlying physics has attracted much attention. Conventional beam shifts like Goos-Hänchen shifts and Imbert-Fedorov shifts not only require obliquely incident beams but also are mostly very small compared to the wavelength and waist size of the beams. Here we propose a method to realize large and controllable polarization-dependent lateral shifts for normally incident beams with photonic crystal slabs. As a proof of the concept, we engineer the momentum-space geometric phase distribution of a normally incident beam by controlling its interaction with a photonic crystal slab whose momentum-space polarization structure is designed on purpose. The engineered geometric phase distribution is designed to result in a large shift of the beam. We fabricate the designed photonic crystal slab and directly observe the beam shift, which is ~5 times the wavelength and approaches the waist radius. Based on periodic structures and only requiring simple manipulation of symmetry, our proposed method is an important step towards practical applications of beam shifting effects.
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Affiliation(s)
- Jiajun Wang
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, 200433, Shanghai, China
| | - Maoxiong Zhao
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, 200433, Shanghai, China
| | - Wenzhe Liu
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, 200433, Shanghai, China.
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| | - Fang Guan
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, 200433, Shanghai, China
| | - Xiaohan Liu
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, 200433, Shanghai, China
| | - Lei Shi
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, 200433, Shanghai, China.
| | - C T Chan
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jian Zi
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, 200433, Shanghai, China.
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Guan F, Liu Z, Dong X, Zhai X, Zhang B, Duan J, Wang N, Gao Y, Yang L, Hou B. Synergistic effect of carbon starvation and exogenous redox mediators on corrosion of X70 pipeline steel induced by Desulfovibrio singaporenus. Sci Total Environ 2021; 788:147573. [PMID: 34034174 DOI: 10.1016/j.scitotenv.2021.147573] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 04/29/2021] [Accepted: 05/02/2021] [Indexed: 06/12/2023]
Abstract
In microbiologically influenced corrosion (MIC) induced by sulfate-reducing bacteria (SRB), the electrons released from iron were transferred via extracellular electron transfer (EET) to the inner cells. Electron mediators and carbon starvation have also been found to promote steel corrosion. This study aimed to investigate the synergistic effects of electron mediators and carbon starvation on MIC and their effect on biofilm catalytic activity. The results demonstrated that the weight losses of X70 steel were 0.68 and 1.03 mg/cm2 in 100% and 10% carbon source (CS) SRB solution, respectively. The addition of riboflavin and cytochrome c increased the corrosion rate by 1.76 and 1.87 times, respectively, in the 100% CS SRB medium compared to the medium without exogenous redox mediators. For the 10% CS SRB medium, the corrosion rate increased by 1.40 and 1.89 times, respectively, when riboflavin and cytochrome c were added. The addition of riboflavin and cytochrome c also enhanced the biocatalytic activity of the SRB biofilm in both the 100% and 10% CS SRB media.
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Affiliation(s)
- Fang Guan
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Zheng Liu
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Xucheng Dong
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaofan Zhai
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - BinBin Zhang
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jizhou Duan
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Nan Wang
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Ying Gao
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lihui Yang
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Baorong Hou
- Key Laboratory of Marine Environmental Corrosionand Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
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Abstract
A belief in communism refers to the unquestionable trust and belief in the justness of communism. Although former studies have discussed the political aim and social value of communism, the cognitive neural basis of a belief in communism remains largely unknown. In this study, we determined the behavioral and neural correlates between a belief in communism and a theory of mind (ToM). For study 1, questionnaire scores were measured and for study 2, regional homogeneity (ReHo) and resting-state functional connectivity (rsFC) were used as an index for resting-state functional MRI (rs-fMRI), as measured by the Belief in Communism Scale (BCS). The results showed that a belief in communism is associated with higher ReHo in the left thalamus and lower ReHo in the left medial frontal gyrus (MFG). Furthermore, the results of the rsFC analysis revealed that strength of functional connectivity between the left thalamus and the bilateral precuneus is negatively associated with a belief in communism. Hence, this study provides evidence that spontaneous brain activity in multiple regions, which is associated with ToM capacity, contributes to a belief in communism.
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Affiliation(s)
- Outong Chen
- School of Psychology, South China Normal University, Guangzhou, China.,Normal College & School of Teacher Education, Qingdao University, Qingdao, China
| | - Fang Guan
- School of Psychology, South China Normal University, Guangzhou, China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, China.,Department of Psychology, Tsinghua University, Beijing, China
| | - Yu Du
- School of Psychology, South China Normal University, Guangzhou, China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
| | - Yijun Su
- School of Psychology, South China Normal University, Guangzhou, China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
| | - Hui Yang
- School of Psychology, South China Normal University, Guangzhou, China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
| | - Jun Chen
- School of Psychology, South China Normal University, Guangzhou, China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
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25
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Guan F, Liu G, Pedersen WS, Chen O, Zhao S, Sui J, Peng K. Neurostructural correlates of dispositional self-compassion. Neuropsychologia 2021; 160:107978. [PMID: 34339716 DOI: 10.1016/j.neuropsychologia.2021.107978] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/24/2021] [Accepted: 07/24/2021] [Indexed: 10/20/2022]
Abstract
Self-compassion is an important emotion regulation strategy predicting positive psychological health and fewer psychopathological problems, but little is known about its structural neural basis. In the current study, we investigated the neurostructural correlates of dispositional self-compassion and its components using voxel-based morphometry (VBM). We found that self-compassion was inversely correlated with gray matter volume (GMV) in the left dorsolateral prefrontal cortex (DLPFC), which was primarily driven by the reduced self-judgment component. We also found that the mindfulness component was associated with greater GMV in the dorsomedial prefrontal cortex/anterior cingulate cortex and the left supplementary motor area, while the isolation and the over-identification components were both correlated with greater GMV in the right inferior temporal gyrus, and over-identification additionally related to less GMV in visual areas. Our findings suggest that dispositional self-compassion and its components are associated with brain structure in regions involved in emotion regulation, self-referential and emotion processing, with implications for the cognitive and neural mechanisms of self-compassion as well as those underlying the effects of self-compassion on its health outcomes.
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Affiliation(s)
- Fang Guan
- Department of Psychology, Tsinghua University, Beijing, China
| | - Guanmin Liu
- Department of Psychology, Tsinghua University, Beijing, China.
| | - Walker S Pedersen
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Outong Chen
- Normal College & School of Education, Qingdao University, Qingdao, China
| | - Sasa Zhao
- UMR 5229, Institut des Sciences Cognitives Marc Jeannerod, CNRS, Université Claude Bernard Lyon 1, Lyon, France
| | - Jie Sui
- School of Psychology, University of Aberdeen, Aberdeen, UK
| | - Kaiping Peng
- Department of Psychology, Tsinghua University, Beijing, China.
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26
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Che Z, Zhang Y, Liu W, Zhao M, Wang J, Zhang W, Guan F, Liu X, Liu W, Shi L, Zi J. Polarization Singularities of Photonic Quasicrystals in Momentum Space. Phys Rev Lett 2021; 127:043901. [PMID: 34355949 DOI: 10.1103/physrevlett.127.043901] [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: 02/27/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
We report the observation of polarization singularities in momentum space of 2D photonic quasicrystal slabs. Supercell approximation and band-unfolding approach are applied to obtain approximate photonic dispersions and the far-field polarization states defined on them. We discuss the relations between the topological charges of the polarization vortex singularities at Γ points and the symmetries of photonic quasicrystal slabs. With a perspective of multipolar expansions for the supercell, we confirm that the singularities are protected by the point-group symmetry of the photonic quasicrystal slab. We further uncover that the polarization singularities of photonic quasicrystal slab correspond to quasibound states in the continuum with exceptionally high-quality factors. Polarization singularities of different topological charges are also experimentally verified. Our Letter introduces core concepts of optical singularities into quasiperiodic systems, providing new platforms for explorations merging topological and singular optics.
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Affiliation(s)
- Zhiyuan Che
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
| | - Yanbin Zhang
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
| | - Wenzhe Liu
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
| | - Maoxiong Zhao
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
| | - Jiajun Wang
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
| | - Wenjie Zhang
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
| | - Fang Guan
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
| | - Xiaohan Liu
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
| | - Wei Liu
- College for Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, Hunan 410073, China
| | - Lei Shi
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Jian Zi
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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27
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Zuo Y, Shi Y, Zhang F, Guan F, Zhang J, Feyereisen R, Fabrick JA, Yang Y, Wu Y. Genome mapping coupled with CRISPR gene editing reveals a P450 gene confers avermectin resistance in the beet armyworm. PLoS Genet 2021; 17:e1009680. [PMID: 34252082 PMCID: PMC8297932 DOI: 10.1371/journal.pgen.1009680] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/22/2021] [Accepted: 06/23/2021] [Indexed: 01/08/2023] Open
Abstract
The evolution of insecticide resistance represents a global constraint to agricultural production. Because of the extreme genetic diversity found in insects and the large numbers of genes involved in insecticide detoxification, better tools are needed to quickly identify and validate the involvement of putative resistance genes for improved monitoring, management, and countering of field-evolved insecticide resistance. The avermectins, emamectin benzoate (EB) and abamectin are relatively new pesticides with reduced environmental risk that target a wide number of insect pests, including the beet armyworm, Spodoptera exigua, an important global pest of many crops. Unfortunately, field resistance to avermectins recently evolved in the beet armyworm, threatening the sustainable use of this class of insecticides. Here, we report a high-quality chromosome-level assembly of the beet armyworm genome and use bulked segregant analysis (BSA) to identify the locus of avermectin resistance, which mapped on 15-16 Mbp of chromosome 17. Knockout of the CYP9A186 gene that maps within this region by CRISPR/Cas9 gene editing fully restored EB susceptibility, implicating this gene in avermectin resistance. Heterologous expression and in vitro functional assays further confirm that a natural substitution (F116V) found in the substrate recognition site 1 (SRS1) of the CYP9A186 protein results in enhanced metabolism of EB and abamectin. Hence, the combined approach of coupling gene editing with BSA allows for the rapid identification of metabolic resistance genes responsible for insecticide resistance, which is critical for effective monitoring and adaptive management of insecticide resistance.
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Affiliation(s)
- Yayun Zuo
- The Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Institute of Pesticide Science, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Yu Shi
- The Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Feng Zhang
- The Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Fang Guan
- The Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jianpeng Zhang
- The Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - René Feyereisen
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jeffrey A. Fabrick
- USDA ARS, U.S. Arid Land Agricultural Research Center, Maricopa, Arizona, United States of America
| | - Yihua Yang
- The Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- * E-mail: (YY); (YW)
| | - Yidong Wu
- The Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- * E-mail: (YY); (YW)
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28
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Guan F, He HH, Zhang SY, Wu XY, Yuan JP. [Clinicopathological analysis of primary squamous cell carcinoma of the thyroid combined with papillary thyroid carcinoma]. Zhonghua Bing Li Xue Za Zhi 2021; 50:808-810. [PMID: 34405621 DOI: 10.3760/cma.j.cn112151-20201022-00801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- F Guan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - H H He
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - S Y Zhang
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - X Y Wu
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - J P Yuan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
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30
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Hu Y, Dong S, Guan F, Chen O, Chen J, Xu S. Emotion Understanding Correlates With Parental Emotional Expressivity in Chinese Youths With Hearing Loss and Typical Hearing. Front Psychol 2021; 12:662356. [PMID: 34267701 PMCID: PMC8276695 DOI: 10.3389/fpsyg.2021.662356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 05/03/2021] [Indexed: 11/17/2022] Open
Abstract
This study aimed at examining the differences between Chinese youths with hearing loss (HL) and with typical hearing (TH) in emotion understanding (EU), parental emotional expressivity, and the associations between EU and parental emotional expressivity. The participants were 282 youths with HL (14.58 ± 3.42 years old) and 350 youths with TH (11.69 ± 2.49 years old). EU was measured by four visual-mode tasks, of which two involve language comprehension while the others do not. Parents reported positive and negative emotional expressivity on the Self-Expressiveness in the Family Questionnaire. Covariates were controlled for including socioeconomic status, parent gender, youth gender, age, intelligence, and teacher-reported comprehension difficulties. Results showed that the four EU tasks were more challenging for the youths with HL than for the youths with TH. The interaction effect of the two groups × 4 tasks was not significant, suggesting that the differences between the two groups of youths in EU were generally similar across the four tasks. The parents of the youths with HL did not differ from the parents of the youths with TH in how often they displayed positive and negative emotional expressivity. Multigroup regression analyses revealed that negative emotional expressivity was negatively related to EU in the youths with HL but not in the youths with TH. However, these two regression coefficients were not significantly different. Positive emotional expressivity was not related to EU in either group. In conclusion, this study extends the knowledge about the EU of Chinese youths with HL and emotion-related socialization of the parents of these youths.
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Affiliation(s)
- Yousong Hu
- School of Psychology, South China Normal University, Guangzhou, China
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, China
- Center for Studies of Psychological Application South China Normal University, Guangzhou, China
- Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China
| | - Shuyang Dong
- Department of Developmental Psychology, Utrecht University, Utrecht, Netherlands
| | - Fang Guan
- Department of Psychology, Tsinghua University, Beijing, China
| | - Outong Chen
- Department of Normal College and School of Teacher Education, Qingdao University, Qingdao, China
| | - Jun Chen
- School of Psychology, South China Normal University, Guangzhou, China
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, China
- Center for Studies of Psychological Application South China Normal University, Guangzhou, China
- Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China
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31
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Guan F, Wu Y, Ren W, Zhang P, Jing B, Xu Z, Wu ST, Peng KP, He JB. Self-compassion and the Mitigation of Negative Affect in the Era of Social Distancing. Mindfulness (N Y) 2021; 12:2184-2195. [PMID: 34221182 PMCID: PMC8236748 DOI: 10.1007/s12671-021-01674-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/15/2021] [Indexed: 01/19/2023]
Abstract
Objectives The outbreak of contagious diseases and their associated non-pharmaceutical interventions can lead to negative mental health consequences. This study aimed to investigate online self-compassion exercises' effectiveness in alleviating people's negative affect (anxiety and negative emotions) during the COVID-19 pandemic lockdown. Methods Study 1 examined the associations between self-compassion and negative affect using an anonymous online survey. In study 2, two pilot experiments were conducted to examine online self-compassion exercises' (i.e., instructor-guided meditation and self-guided writing) effectiveness to mitigate individuals' negative affect. In study 3, a randomized controlled study was conducted to further examine online self-compassion writing's effectiveness in reducing people's negative affect. Results The results of study 1 indicated a significant negative association between self-compassion and participants' negative affect. Participants in study 2a reported significant decreases in negative affect after completing the self-compassion meditation. Study 2b showed that participants who completed the self-compassion writing reported significantly more self-compassion and less anxiety when compared to participants who did not. Study 3 showed substantial pre/post-test changes in participants who completed self-compassion writing. Importantly, there were significant increases in participants' self-compassion and decreases in negative affect when compared to participants in the control condition. Conclusions Self-compassion exercises were effective to alleviate individuals' anxiety and reduce negative emotions (even within a brief session) during the pandemic lockdown. Supplementary Information The online version contains supplementary material available at 10.1007/s12671-021-01674-w.
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Affiliation(s)
- Fang Guan
- Department of Psychology, Tsinghua University, Beijing, China
| | - Yun Wu
- Department of Psychology, Tsinghua University, Beijing, China
| | - Wei Ren
- The Department of Youth and Children Work, China Youth University of Political Studies, Beijing, China
| | - Pei Zhang
- Department of Psychology, Tsinghua University, Beijing, China
| | - Bo Jing
- Department of Psychology, Tsinghua University, Beijing, China
| | - Zhuo Xu
- Department of Psychology, Tsinghua University, Beijing, China
| | - Sheng-Tao Wu
- School of Sociology and Anthropology, Xiamen University, Xiamen, China
| | - Kai-Ping Peng
- Department of Psychology, Tsinghua University, Beijing, China
| | - Ji-Bo He
- Department of Psychology, Tsinghua University, Beijing, China
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32
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Qi L, Dai H, Jin Z, Shen H, Guan F, Yang Y, Tabashnik BE, Wu Y. Evaluating Cross-Resistance to Cry and Vip Toxins in Four Strains of Helicoverpa armigera With Different Genetic Mechanisms of Resistance to Bt Toxin Cry1Ac. Front Microbiol 2021; 12:670402. [PMID: 34054780 PMCID: PMC8160511 DOI: 10.3389/fmicb.2021.670402] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 03/31/2021] [Indexed: 11/20/2022] Open
Abstract
Evolution of resistance by pests has diminished the efficacy of transgenic crops producing insecticidal proteins from Bacillus thuringiensis (Bt). In China, where transgenic cotton producing Bt toxin Cry1Ac has been planted since 1997, field control failures have not been reported but the frequency of resistance to Cry1Ac has increased in the cotton bollworm, Helicoverpa armigera. This provides incentive to switch to multi-toxin Bt cotton, which is grown in many other countries. Previous work created four laboratory strains of H. armigera with >100-fold resistance to Cry1Ac, with the genetic basis of resistance known in all but the LF256 strain. Here, we analyzed the genetic basis of resistance in Cry1Ac in LF256 and evaluated cross-resistance of all four strains to three toxins produced by widely planted multi-toxin Bt cotton: Cry1Fa, Cry2Ab, and Vip3Aa. DNA sequencing revealed that LF256 lacked the mutations in three genes (HaTSPAN1, HaABCC2, and HaABCC3) that confer resistance to Cry1Ac in two other strains of H. armigera we analyzed. Together with previous results, the data reported here show that each of the four strains examined has a different genetic basis of resistance to Cry1Ac. Significant positive cross-resistance occurred to Cry1Fa in three of the four strains tested but not to Cry2Ab or Vip3Aa in any strain. Thus, Cry2Ab and Vip3Aa are likely to be especially valuable for increasing the efficacy and durability of Bt cotton against H. armigera populations that have some resistance to Cry1Ac.
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Affiliation(s)
- Liangxuan Qi
- Key Laboratory of Plant Immunity, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Hanyang Dai
- Key Laboratory of Plant Immunity, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Zeng Jin
- Key Laboratory of Plant Immunity, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Huiwen Shen
- Key Laboratory of Plant Immunity, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Fang Guan
- Key Laboratory of Plant Immunity, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yihua Yang
- Key Laboratory of Plant Immunity, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Bruce E Tabashnik
- Department of Entomology, The University of Arizona, Tucson, AZ, United States
| | - Yidong Wu
- Key Laboratory of Plant Immunity, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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Guan F, Zhang J, Shen H, Wang X, Padovan A, Walsh TK, Tay WT, Gordon KHJ, James W, Czepak C, Otim MH, Kachigamba D, Wu Y. Whole-genome sequencing to detect mutations associated with resistance to insecticides and Bt proteins in Spodoptera frugiperda. Insect Sci 2021; 28:627-638. [PMID: 32558234 DOI: 10.1111/1744-7917.12838] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/08/2020] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
The fall armyworm (FAW), Spodoptera frugiperda, is a major pest native to the Americas that has recently invaded the Old World. Point mutations in the target-site proteins acetylcholinesterase-1 (ace-1), voltage-gated sodium channel (VGSC) and ryanodine receptor (RyR) have been identified in S. frugiperda as major resistance mechanisms to organophosphate, pyrethroid and diamide insecticides respectively. Mutations in the adenosine triphosphate-binding cassette transporter C2 gene (ABCC2) have also been identified to confer resistance to Cry1F protein. In this study, we applied a whole-genome sequencing (WGS) approach to identify point mutations in the target-site genes in 150 FAW individuals collected from China, Malawi, Uganda and Brazil. This approach revealed three amino acid substitutions (A201S, G227A and F290V) of S. frugiperda ace-1, which are known to be associated with organophosphate resistance. The Brazilian population had all three ace-1 point mutations and the 227A allele (mean frequency = 0.54) was the most common. Populations from China, Malawi and Uganda harbored two of the three ace-1 point mutations (A201S and F290V) with the 290V allele (0.47-0.58) as the dominant allele. Point mutations in VGSC (T929I, L932F and L1014F) and RyR (I4790M and G4946E) were not detected in any of the 150 individuals. A novel 12-bp insertion mutation in exon 15 of the ABCC2 gene was identified in some of the Brazilian individuals but absent in the invasive populations. Our results not only demonstrate robustness of the WGS-based genomic approach for detection of resistance mutations, but also provide insights for improvement of resistance management tactics in S. frugiperda.
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Affiliation(s)
- Fang Guan
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jianpeng Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Huiwen Shen
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Xingliang Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Amanda Padovan
- CSIRO Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT, Australia
| | - Tom K Walsh
- CSIRO Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT, Australia
| | - Wee Tek Tay
- CSIRO Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT, Australia
| | - Karl H J Gordon
- CSIRO Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT, Australia
| | - William James
- CSIRO Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT, Australia
| | - Cecilia Czepak
- Escola de Agronomia, Universidade Federal de Goiás, Goiânia, Brazil
| | | | - Donald Kachigamba
- Department of Agricultural Research Services (DARS), Lilongwe, Malawi
| | - Yidong Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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Wei Y, Guan F, Wang R, Qu C, Luo C. Amplicon sequencing detects mutations associated with pyrethroid resistance in Bemisia tabaci (Hemiptera: Aleyrodidae). Pest Manag Sci 2021; 77:2914-2923. [PMID: 33619804 DOI: 10.1002/ps.6327] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 01/25/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Bemisia tabaci (Gennadius) is a major damaging agricultural pest that exhibits high resistance to pyrethroid insecticides. L925I (TTA to ATA) and T929V (ACT to GTT) mutations in the para-type voltage-gated sodium channel (VGSC) are associated with resistance of B. tabaci to pyrethroids. Amplicon sequencing is a reliable and highly efficient method to detect the frequency of mutations linked with insecticide resistance. RESULTS Similar frequencies of L925I and T929V mutations were obtained by amplicon sequencing and Sanger sequencing (L925I: 0.3548 vs 0.3619; T929V: 0.6140 vs 0.6381) with overlap of 95% confidence interval in the SX population of B. tabaci. In five populations of B. tabaci from China, the maximum and minimum frequencies of the two mutations were found in the LN (L925I: 0.1126; T929V: 0.8834) and JS (L925I: 0.8776; T929V: 0.1166) populations by amplicon sequencing. However, there was no significant difference in frequencies between the L925I and T929V mutations. The sum frequency of L925I and T929V exceeded 0.9688 in all populations. In addition, a combining mutation, L925 + T929V (L925I and T929V located in same allele), was found in five populations by amplicon sequencing even though its highest frequency was only 0.0157. CONCLUSION We established an efficient approach for detecting frequency of mutation by amplicon sequencing. The frequencies of L925I and T929V in VGSC associated with pyrethroid resistance were detected in this study, which could provide foundational data for resistance management of B. tabaci. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Yiyun Wei
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Fang Guan
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Ran Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Cheng Qu
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Chen Luo
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Peng WC, Guan F, Hu ZQ, Huang H, Dai B, Zhu GT, Mao BB, Xiao ZY, Zhang BL, Liang X. [Efficacy analysis of fully endoscopic microvascular decompression in primary trigeminal neuralgia via keyhole approach]. Zhonghua Yi Xue Za Zhi 2021; 101:856-860. [PMID: 33789367 DOI: 10.3760/cma.j.cn112137-20200630-02002] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the efficacy and technical features of fully endoscopic microvascular decompression(MVD) in primary trigeminal neuralgia(PTN) via keyhole approach. Methods: The clinical data of 97 patients with PTN underwent fully endoscopic MVD via keyhole approach in the Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University from December 2014 to February 2019 was collected. During fully endoscopic MVD in PTN via keyhole approach, performer use natural clearance without grinding except developed rock bone crest or excessive retraction of the brain tissue, visually and panoramically observe and evaluate the CPA area, accurately identify the responsible vessels, to avoid the omission of responsible vessels or insufficient decompression. And the use of preplaced technology, bridging technology and submersible technology, ensure the efficacy of surgery and reduce the surgical side injuries.Barrow Neurological Institute (BNI) pain score was used to evaluate the efficacy and identify the recurrence. The surgical efficacy was analyzed. Results: The offending vessels were identified under endoscope in 96 cases. Among them, arterial compression was found in 77 cases, venous compression in 6 cases, and both arterial and venous compression in 13 cases. About the pain outcomes, 87 cases had immediate and complete relief of pain, 5 cases had almost relief of pain, 4 cases had partial relief of pain, and still needed medication control, but the dose was lower than that before operation, and 1 case had no obvious relief of pain. About complications, there were 4 cases of temporary facial numbness, 1 case of temporary hearing loss, both of them recovered after symptomatic treatment. There was no cerebral infarction or hemorrhage, intracranial or incision infection. All cases were followed up for 3.0-38.0 months with a median period of(22.4±2.2) months. During the follow-up periods, postoperative recurrence occurred in 3 cases. Conclusion: Fully endoscopic MVD for PTN through keyhole approach, provides panoramic view to avoid omission of offending vessels and reduce complications, seemed to be a safe and effective surgical method.
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Affiliation(s)
- W C Peng
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - F Guan
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Z Q Hu
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - H Huang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B Dai
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - G T Zhu
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B B Mao
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Z Y Xiao
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - B L Zhang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - X Liang
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Guan F, Hou B, Dai X, Liu S, Liu J, Gu Y, Jin L, Yang Y, Fabrick JA, Wu Y. Multiple origins of a single point mutation in the cotton bollworm tetraspanin gene confers dominant resistance to Bt cotton. Pest Manag Sci 2021; 77:1169-1177. [PMID: 33236463 DOI: 10.1002/ps.6192] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/20/2020] [Accepted: 11/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Transgenic crops producing insecticidal proteins derived from Bacillus thuringiensis (Bt) are used globally to kill key insect pests and provide numerous benefits, including improved pest management, increased profits, reduced insecticide use, and increased biological control. Unfortunately, such benefits are rapidly being lost by the evolution of Bt resistance by pests. RESULTS The main strategy to delay resistance relies on the use of non-Bt refuge plants to produce sufficient susceptible insects that mate with rare resistant insects emerging from Bt crops, essentially diluting and/or removing resistance alleles from pest populations. A key assumption for the success of this refuge strategy is that inheritance of resistance is recessive. In China, dominant resistance to Cry1Ac Bt cotton by the cotton bollworm Helicoverpa armigera is increasing and is associated with a mutation in the tetraspanin HaTSPAN1 gene, conferring more than 125-fold resistance. Here, we used amplicon sequencing to test the hypotheses that the HaTSPAN1 mutation either arose from a single event and spread or that the mutation evolved independently several times throughout northern China. From three laboratory strains and 28 field populations sampled from northern China, we identified six resistant and 50 susceptible haplotypes. Phylogenetic analysis indicates that the HaTSPAN1 mutation arose from at least four independent origins and spread to their current distributions. CONCLUSION The results provide valuable information about the evolutionary origins of dominant resistance to Cry1Ac Bt cotton in northern China and offer rationale for the rapid increase in field-evolved resistance in these areas, where the implementation of additional practical resistance management is needed. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Fang Guan
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Bofeng Hou
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Xiaoguang Dai
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Sitong Liu
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Juanjuan Liu
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yan Gu
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Lin Jin
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yihua Yang
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jeffrey A Fabrick
- USDA ARS, US Arid Land Agricultural Research Center, Maricopa, AZ, USA
| | - Yidong Wu
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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Wang N, Li W, Ren Y, Duan J, Zhai X, Guan F, Wang L, Hou B. Investigating the properties of nano core-shell CeO2@C as haloperoxidase mimicry catalyst for antifouling applications. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125592] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Guan F, Dang ZW, Huang SF, Wang JR, Milisavljevic I, Carloni D, Cheng X, Wu YQ. LaCr1-xFexO3 (0≤x≤0.7): A novel NTC ceramic with high stability. Ann Ital Chir 2020. [DOI: 10.1016/j.jeurceramsoc.2020.05.081] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Liang X, Yin W, Chen A, Zhang Z, Zeng J, Shi L, Guan F, Liu X, Zi J. Ultrawideband, Wide Scanning Stripline-Fed Tightly Coupled Array Antenna Based on Parallel-Dipole Elements. Sensors (Basel) 2020; 20:s20185065. [PMID: 32899981 PMCID: PMC7571110 DOI: 10.3390/s20185065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/30/2020] [Accepted: 09/04/2020] [Indexed: 11/16/2022]
Abstract
A stripline-fed tightly coupled array antenna with compact size, large scan volume and low cross-polarization characteristics is proposed for ultrawideband (UWB) applications. Simple impedance-matching process is realized by using parallel dual dipoles. Meanwhile, the parallel symmetrical radiating structures minimize the cross-polarization field components dramatically. The mitigation of various undesired resonances is studied in detail. An infinite array is designed to achieve 3:1 bandwidth (6−18 GHz) when scanning ±60∘ in the E-/D-planes (VSWR < 2.5) and H-plane (VSWR < 3.5). The cross-polarization levels remain below −29 dB at broadside. A 16 × 16 prototype is fabricated to demonstrate the design. The measured results are consistent well with the simulated ones. The overall size of the prototype at the lowest operating frequency is 3×3×0.4λ03 (15×15×2cm3). Due to its wide bandwidth, good electronic scan performance and compact size, the proposed antenna array is a good candidate for modern wireless platforms.
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Affiliation(s)
- Xiuye Liang
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
| | - Weishuang Yin
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
| | - Ang Chen
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
| | - Zhe Zhang
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
| | - Jianping Zeng
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
| | - Lei Shi
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
| | - Fang Guan
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
- Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200438, China
- Correspondence:
| | - Xiaohan Liu
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
| | - Jian Zi
- Department of Physics, Fudan University, Shanghai 200438, China; (X.L.); (W.Y.); (A.C.); (Z.Z.); (J.Z.); (L.S.); (X.L.); (J.Z.)
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40
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Gao Y, Duan J, Zhai X, Guan F, Wang X, Zhang J, Hou B. Photocatalytic Degradation and Antibacterial Properties of Fe 3+-Doped Alkalized Carbon Nitride. Nanomaterials (Basel) 2020; 10:nano10091751. [PMID: 32899800 PMCID: PMC7558592 DOI: 10.3390/nano10091751] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 08/24/2020] [Accepted: 08/24/2020] [Indexed: 02/06/2023]
Abstract
Discovering novel materials and improving the properties of existing materials are the main goals in the field of photocatalysis to increase the potential application of the materials. In this paper, a modified graphitic carbon nitride (g-C3N4) photocatalyst named Fe3+-doped alkalized carbon nitride, which couples the photocatalytic reaction with the Fenton reaction, is introduced to demonstrate its Rhodamine B (RhB) degradation and antibacterial properties. Under visible-light irradiation, the degradation rate of RhB was 99.9% after 200 min, while the antibacterial rates of Pseudomonas aeruginosa (P. aeruginosa), Escherichia coli (E. coli), and Staphylococcus aureus (S. aureus) after 300 min were 99.9986%, 99.9974%, and 99.9876%, respectively. Moreover, the repetitive experiments of RhB degradation demonstrate that the proposed photocatalysts have excellent stability and reusability. The active free radical trapping experiments reveal that the superoxide radical (·O2−) is the dominant reactive oxygen species. In addition, the Fenton reaction is introduced into the photocatalytic system due to the doping of Fe3+, and the hydroxyl radical (·OH) produced from the Fenton reaction further enhances the photocatalytic performance. The remarkable improvement in photocatalytic performance of the proposed photocatalyst can be attributed to its broader UV–visible absorption characteristic and the occurrence of the Fenton reaction.
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Affiliation(s)
- Ying Gao
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jizhou Duan
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Correspondence: (J.D.); (X.Z.)
| | - Xiaofan Zhai
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Correspondence: (J.D.); (X.Z.)
| | - Fang Guan
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Xiutong Wang
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jie Zhang
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Baorong Hou
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
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Pourhashem S, Saba F, Duan J, Rashidi A, Guan F, Nezhad EG, Hou B. Polymer/Inorganic nanocomposite coatings with superior corrosion protection performance: A review. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.04.029] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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42
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Wang N, Guan F, Lv X, Han D, Zhang Y, Wu N, Xia X, Tian J. Enhancing secretion of polyethylene terephthalate hydrolase PETase in
Bacillus subtilis
WB600 mediated by the SP
amy
signal peptide. Lett Appl Microbiol 2020; 71:235-241. [DOI: 10.1111/lam.13312] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/28/2020] [Accepted: 05/04/2020] [Indexed: 11/29/2022]
Affiliation(s)
- N. Wang
- School of Biotechnology Jiangnan University Jiangsu Wuxi China
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
| | - F. Guan
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
| | - X. Lv
- School of Biotechnology Jiangnan University Jiangsu Wuxi China
| | - D. Han
- Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Beijing China
| | - Y. Zhang
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
| | - N. Wu
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
| | - X. Xia
- School of Biotechnology Jiangnan University Jiangsu Wuxi China
| | - J. Tian
- Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing China
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43
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Wang N, Ma S, Duan J, Zhai X, Guan F, Wang X, Hou B. Electrocatalytic oxygen reduction to hydrogen peroxide by oxidized graphene aerogel supported cubic MnCO3 for antibacteria in neutral media. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135880] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Guan F, Yan HL, Chen FF, He HH. [Clinicopathological analysis of ovarian composite neuroendocrine carcinoma]. Zhonghua Bing Li Xue Za Zhi 2020; 49:65-67. [PMID: 31914538 DOI: 10.3760/cma.j.issn.0529-5807.2020.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- F Guan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Yin W, Liang X, Chen A, Zhang Z, Shi L, Guan F, Liu X, Zi J. Cross-polarization suppression for patch array antennas via generalized Kerker effects. Opt Express 2020; 28:40-47. [PMID: 32118939 DOI: 10.1364/oe.28.000040] [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: 09/11/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
The generalized Kerker effect has recently gained an explosive progress in metamaterials, from the scattering management of particle clusters to the reflection and transmission manipulation of metalattices and metasurfaces. Various optical phenomena observed can be explained by the generalized Kerker effect. Due to the same nature of electromagnetic waves, we believe that the generalized Kerker effect can also be used in the microwave field. Inspired by this, in this letter we design a kind of patch array antenna to suppress the cross-polarization by interferences of multipoles. Using different far-field radiation phase symmetries of electromagnetic multipoles for the patch, the cross-polarization can be almost cancelled while the co-polarization be kept. A pair of 8×8 U-slot patch array antennas, working in a wide band (8.8 GHz-10.4 GHz), have been designed, fabricated and measured to verify our proposal. Simulated and measured results both agree well with the theory, showing more than 20 dB gain suppression of the cross-polarization, which indicates the universality of the generalized Kerker effect in electromagnetic waves.
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Su HY, Lin ZY, Peng WC, Guan F, Zhu GT, Mao BB, Dai B, Huang H, Hu ZQ. MiR-448 downregulates CTTN to inhibit cell proliferation and promote apoptosis in glioma. Eur Rev Med Pharmacol Sci 2019; 22:3847-3854. [PMID: 29949161 DOI: 10.26355/eurrev_201806_15269] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE miRNAs have been confirmed to be related to cell proliferation and apoptosis. In this study, we detected the potential effect of miR-448 on glioma cell proliferation and apoptosis. MATERIALS AND METHODS miR-448 and CTTN expression levels were detected in glioma cell lines with quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR). Cells were transfected with miR-448 mimics and inhibitor by using lipofectamine 2000 respectively. The proliferative ability of transfected cells was detected via methyl thiazolyl tetrazolium (MTT) and cell counting kit-8 (CCK8) assays. Cell apoptosis and cell-cycle were tested using flow cytometry. The regulatory correlation between miR-448 and CTTN was explored by bioinformatics analysis and luciferase reporter assay. RESULTS Lower expression of miR-448 and higher level of CTTN were detected in glioma cells. MiR-448 could regulate cell proliferation, cell apoptosis, and cell cycle. CTTN was negatively regulated by miR-448. CONCLUSIONS miR-448 downregulates CTTN to inhibit cell proliferation and promote apoptosis in glioma, which indicates a potential therapeutic target of glioma.
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Affiliation(s)
- H-Y Su
- Department of Neurological Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China.
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Liu W, Wang B, Zhang Y, Wang J, Zhao M, Guan F, Liu X, Shi L, Zi J. Circularly Polarized States Spawning from Bound States in the Continuum. Phys Rev Lett 2019; 123:116104. [PMID: 31573246 DOI: 10.1103/physrevlett.123.116104] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Indexed: 06/10/2023]
Abstract
Bound states in the continuum in periodic photonic systems like photonic crystal slabs are proved to be accompanied by vortex polarization singularities on the photonic bands in the momentum space. The winding structures of polarization states not only widen the field of topological physics but also show great potential that such systems could be applied in polarization manipulating. In this Letter, we report the phenomenon that by in-plane inversion (C_{2}) symmetry breaking, pairs of circularly polarized states could spawn from the eliminated bound states in the continuum. Along with the appearance of the circularly polarized states as the two poles of the Poincaré sphere together with linearly polarized states covering the equator, full coverage on the Poincaré sphere could be realized. As an application, ellipticity modulation of linear polarization is demonstrated in the visible frequency range. This phenomenon provides a new degree of freedom in modulating polarization. The C points could also find applications in light-matter interactions. Further studying and manipulating the reported polarization singularities may lead to novel phenomena and physics in radiation modulating and topological photonics.
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Affiliation(s)
- Wenzhe Liu
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Bo Wang
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Yiwen Zhang
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Jiajun Wang
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Maoxiong Zhao
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Fang Guan
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Xiaohan Liu
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Lei Shi
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Jian Zi
- State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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Zhu GT, Hu ZQ, Huang H, Dai B, Guan F, Xiao ZY, Mao BB. [Application of complete endoscopic technique in microvascular decompression related tovertebrobasilar artery compression]. Zhonghua Yi Xue Za Zhi 2019; 99:2597-2601. [PMID: 31510719 DOI: 10.3760/cma.j.issn.0376-2491.2019.33.008] [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
Objective: To study the operative method, special technique and curative effect of complete neuroendoscopic microvascular decompression(MVD) related to vertebrobasilar artery compression. Methods: Thirteen patients with functional cranial nerve disease caused by vertebrobasilar artery as direct or indirect responsible vessel accepted complete endoscopic MVD, including 11 patients with hemifacial spasm and 2 patients with trigeminal neuralgia. The procedure and curative effect of endoscopic surgery were analyzed retrospectively. Results: All procedures of complete neuroendoscopic MVD were successfully completed.Intraoperative observation by endoscope showed that 6 cases were oppressed directly by vertebral artery, 2 cases were oppressed directly by basilar artery, 5 cases were combined oppressed by displaced basilar artery and other vessels (1 case was superior cerebellar artery and 4 cases were anterior inferior cerebellar artery). During the operation, Teflon sheets was placed directly into the compression point in 2 cases, the "Pre-placed" technique was used to place Teflon sheets in 7 cases, and the "Set up bridge" technique was used to place Teflon sheets in 4 cases. Follow-up for 8-38 months,the symptoms disappeared completely in 12 cases and improved in 1 case. No deaths and severe complications occurred, such as postoperative bleeding, cerebellar infarction and intracranial infection. Conclusion: MVD related to vertebrobasilar artery compression can be performed by complete neuroendoscopic technique, which can achieve sufficient decompression effect and curative effect.Flexible use of the special technology of placing Teflon sheets by single-hand under endoscope, such as the "Pre-placed" and "Set up bridge" technique, is an important technical guarantee for the successful completion of endoscopic MVD.
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Affiliation(s)
- G T Zhu
- Neurosurgery of Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Darne C, Robertson D, Alsanea F, Guan F, Pan T, Grosshans D, Gautam A, Beddar S. A Proton Radiography System Design Using a Liquid Scintillator Detector. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Guan F, Lin XJ, Dai H, Wang JR, Cheng X, Huang SF. LaMn1-xTixO3-NiMn2O4(0≤x≤0.7): A composite NTC ceramic with controllable electrical property and high stability. Ann Ital Chir 2019. [DOI: 10.1016/j.jeurceramsoc.2019.03.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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