检索结果-南通市图书馆

Stability of mixed-halide wide bandgap perovskite solar cells: Strategies and progress

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2021年第10期30卷 395-415,I0011页

作者： Lei Tao Jian Qiu Bo Sun xiaojuan wang Xueqin Ran Lin Song Wei Shi Qi Zhong Ping Li Hui Zhang Yingdong Xia Peter Müller-Buschbaum Yonghua Chen Key Laboratory of Flexible Electronics(KLOFE)&Institution of Advanced Materials(IAM) Nanjing Tech University(Nanjing Tech)Nanjing 211816JiangsuChina Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072ShaanxiChina Key Laboratory of Advanced Textile Materials&Manufacturing Technology Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Lehrstuhl für Funktionelle Materialien Physik DepartmentTechnische Universität MünchenJames-Franck-Str.185748 GarchingGermany Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität MünchenLichtenbergstr.185748 GarchingGermany

Benefiting from the superior optoelectronic properties and low-cost manufacturing techniques,mixedhalide wide bandgap(WBG)perovskite solar cells(PSCs)are currently considered as ideal top cells for fabricating multi-junction or tandem solar cells,which are designed to beyond the Shockley-Queisser(S-Q)limit of single-junction solar ***,the poor long-term operational stability of WBG PSCs limits their further employment and hinders the marketization of multi-junction or tandem solar *** this review,recent progresses on improving environmental stability of mixed-halide WBG PSCs through different strategies,including compositional engineering,additive engineering,interface engineering,and other strategies,are ***,the outlook and potential direction are discussed and explored to promote the further development of WBG PSCs and their applications in multijunction or tandem solar cells.

关键词： Mixed halide perovskite Stability Tandem solar cells Wide bandgap perovskite

Impact of bacterial chaperonin GroEL–GroES on bacteriorhodopsin folding and membrane integration

在线全文

学校读者我要写书评

暂无评论

Biophysics Reports 2019年第3期5卷 133-144页

作者： Xinwei Lu Baomei Xu Haiyan Sun Junting Wei Haixia Chi Naseer Ullah Khan xiaojuan wang Xiaoqiang wang Fang Huang State Key Laboratory of Heavy Oil Processing College of Chemical Engineering China University of Petroleum (East China)

Our understanding of molecular chaperone function in membrane protein biogenesis lags far behind that in soluble protein biogenesis. Through a combined approach including isothermal titration calorimetry, UV–Vis spectroscopy, and fluorescence spectroscopy, the behavior of ATP-dependent chaperonin Gro EL–Gro ES, a paradigmatic chaperone of soluble protein folding, was investigated in the refolding of membrane protein bacteriorhodopsin(BR) and its membrane insertion. We found that BR bound asymmetrically to the double-ring Gro EL, with a much higher affinity when it was partially denatured. Gro EL alone showed a clear influence on BR refolding, but the presence of ATP was necessary to significantly enhance both the rate and yield of the Gro EL-mediated folding, in contrast to the adverse effect of Gro ES on the folding yield. However, synergy between ATP and Gro ES was shown to be required not only for releasing high-affinity BR species from Gro EL, but also for unfolding and rescuing the misfolded conformers complexed to Gro EL. This is consistent with the observation that maximum rate enhancement of BR refolding or assembly with the prepared inverted membrane vesicles was achieved when the complete chaperonin system was used. Our results support the iterative unfolding mechanism of Gro EL activity previously proposed for soluble proteins, whereby Gro EL might perform repeated unfolding and release of BR, thus offering additional opportunities for timely folding or membrane integration. This work provides important information on the convergence of folding of membrane and soluble proteins in light of folding pathways and the role of molecular chaperones.

关键词： Chaperonin Membrane protein Membrane reconstitution Protein folding Protein structure

Comparison and significance of specific and non-specific cellular immunity in patients with chronic hepatitis B caused by infection with genotypes B or C of hepatitis B virus

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2009年第8期52卷 719-723页

作者： GU XiBing,YANG xiaojuan,wang Dong,HUA Zhong,WU HangYuan,CHEN HaoKun,XU YueQin & LU ZhongHua Wuxi Hospital for Infectious Diseases,Wuxi 214005,China 1. Wuxi Hospital for Infectious Diseases Wuxi 214005 China

The present study was designed to investigate possible relationships between the genotypes of hepatitis B virus(HBV) and the HBV-specific cytotoxic T lymphocyte(CTL) *** genotypes,HBV specific CTL HBV DNA and other markers of HBV infection were determined in 138 patients with chronic hepatitis *** results showed that the patients infected with genotype C(n=62) had a significantly lower HBV-specific CTL response than those who were infected with HBV genotype B(P<0.01).HBV DNA titer was higher in patients infected with HBV genotype C than in those infected with HBV geno-type B(P<0.01).Both alanine aminotransferase(ALT) and total bilirubin(TBIL) were higher in HBV genotype C infected patients than in those infected with genotype B(P<0.01 and <0.05,respectively).These results suggest that compared with CHB patients infected with HBV genotype B,the higher HBV DNA level and more severe liver damages in the patients infected with genotype C of HBV may be associated with genotype C of the virus.

关键词： chronic hepatitis B hepatitis B virus(HBV) genotypes specific cytotoxic T lymphocyte

在线全文

学校读者我要写书评

暂无评论

基于散射模型的水下图像复原

机器人 2010年第6期32卷 721-725页

作者：边信黔王晓娟哈尔滨工程大学自动化学院黑龙江哈尔滨150001

水下图像的衰减度与成像距离有直接关系.为了在没有精确深度图情况下有效恢复水下图像,提出基于散射模型的分段映射方法.研究了水下光线的散射模型,探讨了水下图像的衰减规律;利用水池试验数据采用直线拟合法建立散射模型;提出基于散射... 详细信息

水下图像的衰减度与成像距离有直接关系.为了在没有精确深度图情况下有效恢复水下图像,提出基于散射模型的分段映射方法.研究了水下光线的散射模型,探讨了水下图像的衰减规律;利用水池试验数据采用直线拟合法建立散射模型;提出基于散射模型的分段映射法.为避免求解精确深度图,利用映射约束条件及少量先验信息导出多级离散深度值,从而构建出从退化图像到真实图像的分段映射函数.恢复结果表明,所提方法增加了图像整体对比度,突出了图像细节,明显提高了图像质量.

关键词：水下图像复原散射模型分段映射法水下视觉

快速凝固Ti-Al-Nb合金B2相形成机制与显微力学性能

在线全文

学校读者我要写书评

暂无评论

金属学报 2022年第9期58卷 1169-1178页

作者：梁琛王小娟王海鹏西北工业大学物理科学与技术学院西安710072

采用急冷和深过冷快速凝固技术,研究了冷却速率与过冷度对Ti_(75-x)Al_(x)Nb_(25)(x=22、45,原子分数,%)合金相组成、凝固组织演变、B2相形成机制及显微力学性能的作用。在自由落体条件下,随着液滴直径减小,Ti_(53)Al_(22)Nb_(25)合金... 详细信息

采用急冷和深过冷快速凝固技术,研究了冷却速率与过冷度对Ti_(75-x)Al_(x)Nb_(25)(x=22、45,原子分数,%)合金相组成、凝固组织演变、B2相形成机制及显微力学性能的作用。在自由落体条件下,随着液滴直径减小,Ti_(53)Al_(22)Nb_(25)合金凝固液滴中B2相由粗大枝晶向等轴晶转变,Ti_(30)Al_(45)Nb_(25)合金凝固液滴的B2相形核位置由γ-TiAl相晶粒内部向晶界处转移,B2相的体积分数逐渐减小。在电弧熔炼和真空吸铸条件下,随着冷却速率的增加,Ti_(53)Al_(22)Nb_(25)合金B2相枝晶尺寸显著减小,Ti_(30)Al_(45)Nb_(25)合金凝固组织发生了由非规则(γ+B2)相层片→规则(γ+B2)相层片→针状(γ+B2)的转变。自由落体条件下Ti_(75-x)Al_(x)Nb_(25)合金显微硬度随液滴直径的减小逐渐增加,显微硬度的最大值分别为11.57和7.7 GPa,分别较吸铸样品增加了64%和22%,表明深过冷耦合大冷速能有效提高合金的显微力学性能。

关键词： Ti-Al-Nb 合金快速凝固组织演变显微硬度

Pharmacokinetic interactions between the potential COVID-19 treatment drugs lopinavir/ritonavir and arbidol in rats

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2021年第7期22卷 599-602页

作者： Yunzhen HU Minjuan ZUO xiaojuan wang Rongrong wang Lu LI Xiaoyang LU Saiping JIANG Department of Clinical Pharmacy the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310006China Public Service Platform for the Evaluation of Innovative Drug Property Hangzhou 311121China

The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-Co V-2) has occasioned worldwide alarm. Globally, the number of reported confirmed cases has exceeded 84... 详细信息

关键词： drugs acute respiratory

Narrow distribution of cyanophage psbA genes observed in two paddy waters of Northeast China by an incubation experiment

在线全文

学校读者我要写书评

暂无评论

Virologica Sinica 2016年第2期31卷 188-191页

作者： Xinzhen wang Ruiyong Jing Junjie Liu Zhenhua Yu Jian Jin Xiaobing Liu xiaojuan wang Guanghua wang Key Laboratory of Mollisols Agroecology Northeast Institute of Geography and Agroecology Chinese Academy of SciencesHarbin 150081 China University of Chinese Academy of Sciences Beijing 100049China College of Life and Sci-technology Heilongjiang BaYi Agricultural University Daqing 163319 China Centre for AgriBioscience La Trobe University Melbourne Campus Bundoora Vic 3086 Australia

Dear Editor,Cyanophages are viruses that infect *** play an important role in shaping the genetic and functional diversity of themselves and their hosts through genetic exchange and shuffling（Lindell et al.,2005;Sing... 详细信息

关键词： incubation paddy waters capable Northeast cyanobacteria phage shaping contained themselves

在线全文

学校读者我要写书评

暂无评论

动力电池支撑架结构设计及散热性能分析

太阳能学报 2022年第5期43卷 454-460页

作者：王博胡兵王小娟新疆工程学院控制工程学院乌鲁木齐830023 新疆工程学院数理学院乌鲁木齐830023

可再生能源的发展势必带动动力电池的发展,在促进退役动力电池循环利用方面也将取得较大成效,在动力电池发展过程中,其安全性是值得广泛关注的重点问题,为提高动力锂电池组放电时散热效率,设计电池组支撑架,采用计算机仿真的方法研究不... 详细信息

可再生能源的发展势必带动动力电池的发展,在促进退役动力电池循环利用方面也将取得较大成效,在动力电池发展过程中,其安全性是值得广泛关注的重点问题,为提高动力锂电池组放电时散热效率,设计电池组支撑架,采用计算机仿真的方法研究不同支撑架结构、不同工质、不同流速下18650型锂电池构成的动力电池组的热性能。通过对空气和水2种工质流体、工质流速大小、工质入口位置等参数进行组合仿真分析,结果表明,随着工质流速的增加,电池组及支撑架表面的最高温度逐渐降低,当工质流速大于10 m/s时趋于稳定;适当的工质流入口的位置可增强降温效果,在低流速状态下,空气和水分别作为冷却工质时,纵向包裹型电池支撑架比横向包裹型电池支撑架电池组中表面温度分别降低了2.64%和1.86%;在高流速状态下,空气和水分别作为冷却工质时,纵向包裹型电池支撑架比横向包裹型电池支撑架电池组中表面温度分别降低了3.15%和1.83%。动力电池支撑架结构设计可为后续电池热控制提供理论参考。

关键词：新能源汽车动力电池热控制机构设计计算机仿真

SERK Receptor-like Kinases Control Division Patterns of Vascular Precursors and Ground Tissue Stem Cells during Embryo Development in Arabidopsis

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2019年第7期12卷 984-1002页

作者： Huiqiang Li Zeping Cai xiaojuan wang Meizhen Li Yanwei Cui Nan Cui Fei Yang Mingsong Zhu Junxiang Zhao Wenbin Du Kai He Jing Yi Frans E.Tax Suiwen Hou Jia Li Xiaoping Gou Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life Sciences Lanzhou University Lanzhou Gansu 730000 China College of Forestry Hainan University Danzhou Hainan 571737 China Department of Molecular and Cellular Biology University of Arizona Tucson AZ 85721 USA

During embryo development, the vascular precursors and ground tissue stem cells divide to renew them-selves and produce the vascular tissue, endodermal cells, and cortical cells. However, the molecular mech-anisms regulating division of these stem cells have remained largely elusive. In this study, we show that loss of function of SOMATIC EMBRYOGENESIS RECEPTOR-UKE KINASE (SERK) genes results in aberrant em-bryo development. Fewer cortical, endodermal, and vascular cells are generated in the embryos of serk1 serk2bak1 triple mutants. WUSCHEL-RELATED HOMBOBOX5 (WOXS) is ectopically expressed in vascular cells of serkl serk2 bak1 embryos. The first transverse division of vascular precursors in mid-globular em-bryos and second asymmetric division of ground tissue stem cells in early-heart embryos are abnormally altered to a longitudinal division. The embryo defects can be partially rescued by constitutively activated mitogen-activated protein kinase (MAPK) kinase kinase YODA (YDA) and MAPK kinase MKK5. Taken together, our results reveal that SERK-mediated signals regulate division patterns of vascular precursors and ground tissue stem cells, likely via the YDA-MKK4/5 cascade, during embryo development.

关键词： embryo ground tissue stem cell MKK4 MKK5 SERKs vascular precursors