检索结果-南通市图书馆

Protein dynamics elucidated by NMR technique

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2013年第10期4卷 726-730页

作者： Conggang Li Chun Tang Maili Liu Key Laboratory of Magnetic Resonance in Biological Systems Wuhan Center for Magnetic ResonanceState Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsWuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071China

In 1957,Christian Anfinsen postulated his famous dogma based on the study of ribonuclease(Sela et al.,1957),stating that the amino acid sequence of a protein determines its tertiary structure,a unique and kinetically accessible energy minimum,in a given *** a result,determination of a global energy minimum,or the most populated structure,has been the main focus of structural biology in the ensuing half a *** more and more structures have been determined,people have gain some insights of why protein functions,but the detailed mechanisms and the function process,or how protein functions,remains elusive.

关键词： elucidated structure dynamics

Development of Fiber Lasers and Their Applications

在线全文

学校读者我要写书评

暂无评论

光机电信息 2006年第6期23卷 28-35页

作者： ZHAO Chong-guang QU Zhou LIU Yang WANG Ji WANG Li-jun Lab of Excited State Processes Changchun Institute of OpticsFine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China The Science insititute of P.L.A. Information Engineering University Zhengzhou 450052China Opto-Electronics Facility Wuhan Ordnance Non-Commissioned Officers Academy Wuhan 430075 China

Development of fiber lasers, especially the latest progress in high power fiber lasers, and the problems of the commercialization of high power fiber lasers, are discussed. Research on other kinds of fiber lasers, suc... 详细信息

关键词：光纤激光器双金属光纤激光器光子晶体光纤 PCF 超短脉冲激光器拉曼光纤激光器

Promoting spintronic terahertz radiation via Tamm plasmon coupling

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2023年第6期11卷 1057-1066页

作者： YUNQING JIANG HONGQING LI XIAOQIANG ZHANG FAN ZHANG YONG XU YONGGUANG XIAO FENGGUANG LIU ANTING WANG QIWEN ZHAN WEISHENG ZHAO School of Integrated Circuit Science and Engineering Hefei Innovation Research InsitituteBeihang UniversityBeijing 100191China Anhui High Reliability Chips Engineering Laboratory Hefei 230013China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China Department of Optics and Optical Engineering University of Science and Technology of ChinaHefei 230026China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China

Spectral fingerprint and terahertz(THz)field-induced carrier dynamics demands the exploration of broadband and intense THz signal *** THz emitters(STEs),with high stability,a low cost,and an ultrabroad bandwidth,have been a hot topic in the field of THz *** of the main barriers to their practical application is lack of an STE with strong radiation ***,through the combination of optical physics and ultrafast photonics,the Tamm plasmon coupling(TPC)facilitating THz radiation is realized between spin THz thin films and photonic crystal *** results show that the spectral absorptance can be increased from 36.8%to 94.3%for spin THz thin films with *** coupling with narrowband resonance not only improves the optical-to-spin conversion efficiency,but also guarantees THz transmission with a negligible loss(~4%)for the photonic crystal *** to the simulation,we prepared this structure successfully and experimentally realized a 264%THz radiation ***,the spin THz thin films with TPC exhibited invariant absorptivity under different polarization modes of the pump beam and weakening confinement on an obliquely incident pump *** approach is easy to implement and offers possibilities to overcome compatibility issues between the optical structure design and low energy consumption for ultrafast THz optospintronics and other similar devices.

关键词： pump polarization coupling

Maximizing hydrogen evolution via Co-Ni dual atoms and nanoclusters on hierarchically ordered porous carbon framework

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2024年第10期67卷 3197-3205页

作者： Qian Li Pan Zhang Huaiguang Li Yuan Wang Dongsheng Tang Qun Li Jiabin Wu Synergetic Innovation Center for Quantum Effects and Application Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationCollege of Physics and Information ScienceHunan Normal UniversityChangsha 410081China National Key Laboratory of Advanced Micro and Nano Manufacture Technology School of Integrated CircuitsPeking UniversityBeijing 100871China The Chinese University of Hong Kong ShenzhenShenzhen 518172China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication&CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China Department of Chemistry Tsinghua UniversityBeijing 100084China insititute of Microelectronics State Key Laboratory of Analog and Mixed-Signal VLSIUniversity of MacaoMacao 519000China

Efficient hydrogen production through water splitting relies on the development of high-performance catalysts for the hydrogen evolution reaction(HER).In this study,we synthesized the CoNi SAs@NPs-NC catalyst using multi-metal single-crystal ordered macroporous metal-organic frameworks(MOFs)as *** catalyst features a hierarchical porous structure with ordered macropores and micropores,which not only provides a high specific surface area but also promotes efficient mass ***,the incorporation of bimetallic components,coupled with synergistic interactions between single atoms(SAs)and nanoparticles(NPs),significantly enhances its catalytic *** CoNi SAs@NPs-NC nanocatalysts demonstrated exceptional activity in the HER,recording overpotentials of 90 mV in 1 M KOH and 61 mV in 0.5 M H_(2)SO_(4),both at a current density of 10 mA cm^(−2).In addition,density functional theory(DFT)analysis was employed to investigate the synergistic interactions among CoNi NPs,SAs,and nitrogen *** finding highlights the promising potential of the CoNi SAs@NPs-NC catalyst for efficient hydrogen evolution,making it a valuable candidate for advancing the field of water splitting.

关键词： three dimensional ordered macroporous Co-Ni dual atoms Co-Ni nanoclusters HER synergistic effect