检索结果-南通市图书馆

Ko Kuei Chen:a pioneer of modern pharmacological research in China

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2023年第5期14卷 315-317页

作者： Huan Liu Zhaoqi Liu xue gong Hao Cheng University of Science and Technology of China Hefei 230026China State Key Laboratory of Virology Wuhan 430072China Institute of Microbiology Chinese Academy of SciencesBeijing 100101China

Ko Kuei Chen(陈克恢,1898–1988)(Fig.1)was a pharmacologist who ceaselessly strove for medical research all his *** was a pioneer of modern pharmacological research in Chinese medicine(Qian,2014).He systematically studied the pharmacological action of ephedrine and published the first paper on this topic in the *** discovered that injecting sodium nitrite and sodium thiosulfate intravenously could effectively treat acute cyanide poisoning(Chen and Rose,1952).He isolated cinobufagin and cinobufotoxin from Ch’an Su,the dried venom of the Chinese *** research in pharmacology enriched the treasure trove of *** Kuei Chen was a pioneer of pharmacology in Chinese medicine,and his research had epoch-making significance in the *** pharmacological research on ephedrine set a milestone in the world medicine history.

关键词： pioneer dried epoch

A cold adapt and ethanol tolerant endoglucanase from a marine Bacillus subtilis

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2018年第12期26卷 2601-2606页

作者： Dongsheng xue Xuhao Zeng Chunjie gong Dongqiang Lin Shanjing Yao Key Laboratory of Fermentation Engineering (Ministry of Education) Hubei Provincial Cooperative Innovation Center of Industrial Fermentation Hubei Key Laboratory of Industrial MicrobiologyHubei University of Technology Department of Chemical and Bioengineering Zhejiang University

The catalytic properties and thermodynamic kinetics of the endoglucanase from a marine Bacillus subtilis were analyzed. Optimum pH and temperature of the endoglucanase activity were 5.0 and 35 °C. The endoglucanase activity, melt point temperature was 1.13 folds(247.02 U·ml^(-1)), 2.1 °C higher(39.2 °C) in 6% ethanol solution than that(218.60 U·ml^(-1)),(37.1 °C) in free ethanol. At 40 °C–55 °C, Gibbs free energy, ΔG, and the content ofα-helix was higher in 6% ethanol solution than that in ethanol free solution. The increasing of α-helix content led to higher activity and better thermostability in ethanol solution. The cold adapt ethanol tolerant endoglucanase was valuable for bioethanol product by simultaneous saccharification and fermentation process.

关键词： Endoglucanase Ethanol tolerant Cold adapt Bioethanol

Spin-Dependent Electron Properties of a Triple-Terminal Quantum Dot Structure

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2009年第12期52卷 1117-1124页

作者： HAN Yu gong wei-Jiang wei Guo-Zhu Department of Physics Liaoning University Shenyang 110036 China College of Sciences Northeastern University Shenyang 110004 China International Center for Material Physics Acadmia Sinica Shenyang 110015 China

Electron transport properties of a triple-terminal Aharonov-Bohm interferometer are theoretically *** applying a Rashba spin-orbit coupling to a quantum dot locally, we find that remarkable spin polarization comesabout in the electron transport process with tuning the structure parameters, i.e., the magnetic flux or quantum dotlevels. When the quantum dot levels are aligned with the Fermi level, there only appear spin polarization in thisstructure by the presence of an appropriate magnetic flux. However, in absence of magnetic flux spin polarization andspin separation can be simultaneously realized with the adjustment of quantum dot levels, namely, an incident electronfrom one terminal can select a specific terminal to depart from the quantum dots according to its spin state.

关键词： quantum dot electron transport Rashba interaction

Substructure hybrid testing of reinforced concrete shear wall structure using a domain overlapping technique

在线全文

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2017年第4期16卷 761-772页

作者： Zhang Yu Pan Peng gong Runhua Wang Tao xue weichen Key laborary of Earthquake Engineering and Engineering vibration Institute of Engineering MechanicsChina Earthquake AdministrationYanjiaoSanheHebei 065201P.R.China Key Laboratory of Civil Engineering Safety and Durability of China Education Tsinghua UniversityBeijing 100084P.R.China Department of Civil Engineering Tsinghua UniversityBeijing 100084P.R.China Building Engineering Department Tongji UniversityShanghai 200092P.R.China

An online hybrid test was carried out on a 40-story 120-m high concrete shear wall structure. The structure was divided into two substructures whereby a physical model of the bottom three stories was tested in the laboratory and the upper 37 stories were simulated numerically using ABAQUS. An overlapping domain method was employed for the bottom three stories to ensure the validity of the boundary conditions of the superstructure. Mixed control was adopted in the test. Displacement control was used to apply the horizontal displacement, while two controlled force actuators were applied to simulate the overturning moment, which is very large and cannot be ignored in the substructure hybrid test of high-rise buildings. A series of tests with earthquake sources of sequentially increasing intensities were carried out. The test results indicate that the proposed hybrid test method is a solution to reproduce the seismic response of high-rise concrete shear wall buildings. The seismic performance of the tested precast high-rise building satisfies the requirements of the Chinese seismic design code.

关键词： hybrid test substructure technique domain overlapping method precast concrete building

Hierarchical molybdenum disulfide nanosheet arrays stemmed from nickel-cobalt layered double hydroxide/carbon cloth for highly-efficient hydrogen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2021年第6期30卷 587-592,I0014页

作者： Yuxuan wei Yanlong Lv Beidou Guo Jianru gong Chinese Academy of Sciences(CAS)Center for Excellence in Nanoscience CAS Key Laboratory for Nanosystem and Hierarchical FabricationNational Center for Nanoscience and TechnologyBeijing 100190China University of CAS Beijing 100049China

The hierarchical structure of molybdenum disulfide(MoS2)nanosheet arrays stemmed from nickelcobalt layered double hydroxide(NiCo-LDH)/carbon cloth was prepared by growing the MoS_(2) nanosheet arrays onto the NiCo-LDH template which was pre-deposited onto the carbon cloth *** this electrode configuration,carbon cloth is the three dimensional and conductive skeleton;NiCo-LDH nanosheets,as the template,ensure the oriented growth of MoS2 nanosheet ***,more MoS_(2) active sites are exposed and the catalyst exhibits good hydrogen evolution reaction activity.

关键词： Hydrogen evolution reaction catalysts Hierarchical structure Molybdenum disulfide Nickel-cobalt layered double hydroxide

Effect of local non-convexity on the critical shear strength of granular materials determined via the discrete element method

在线全文

学校读者我要写书评

暂无评论

Particuology 2020年第5期18卷 105-112页

作者： Zhihong Nie Shunkai Liu wei Hu Jian gong School of Civil Engineering Central South UniversityChangshaHunan 410075China Hunan Province Key Laboratory of Geotechnical Engineering Stability Control and Health Monitoring Hunan University of Science and TechnologyXiangtanHunan 411201China School of Hydraulic Engineering Changsha University of Science and Technology Changsha 410114China

Multi-sphere clumps are commonly used to simulate non-spherical particles in discrete element method *** is of interest whether the degree of local non-convexity λ affects the mechanical behaviour of granular materials with the same non-convexity η.A series of discrete-element-method biaxial shear tests are conducted on rough particle packings with rη=0.075 and different λ values(ranging from 0.134 to 0.770).The microscale results show that the contact type changes with an increase in λ.However,the critical strength is independent of λ.The evaluation of the contributions of different contact types to the critical shear strength and a detailed analysis of the anisotropies help clarify the microscopic mechanisms that result in the independence of the critical shear strength from λ.

关键词： Multi-sphere clump Local non-convexity Discrete element method Biaxial shear test Contact type Critical shear strength

Relationship between Road Network Density and Cognitive Function: Results from a Cross-Sectional Study among Adults Aged 60 Years and Older in Liaoning, China

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

Biomedical and Environmental Sciences 2022年第4期35卷 370-374页

作者： BAI xue wei Jia Xin LUAN De Chun LIU Meng Ting gong Yong Hui WU wei GAO Qian China Medical University School of Public Health Shenyang 110122LiaoningChina Institute for Nutrition and Food Hygiene Liaoning Provincial Center for Disease Control and PreventionShenyang 110122LiaoningChina

A good built environment is a basic element for supporting active and healthy *** built environment can change individual behaviors,stimulate cognitive activities,and potentially affect cognitive health.A growing number of studies have explored many features of the built environment,such as land use mix and destination accessibility.

关键词： supporting destination Liaoning

Damping of Magnetorheological Elastomers

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Physics 2008年第6期21卷 581-585页

作者： Lin Chen Xing-long gong wei-hua Li CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Me- chanics University of Science and Technology of China Hefei 230027 China School of Mechanical Materials and Mechatronic Engineering University of Wollongong Wollongong NSW 2522 Australia

The damping property of magnetorheological （MR） elastomers is characterized by a modified dynamic mechanical-magnetic coupled analyzer. The influences of the external magnetic flux density, damping of the matrix, content of iron particles, dynamic strain, and driving frequency on the damping properties of MR elastomers were investigated experimentally. The experimental results indicate that the damping properties of MR elastomers greatly depend on the interfacial slipping between the inner particles and the matrix. Different from general composite materials, the interracial slipping in MR elastomers is affected by the external applied magnetic field.

关键词： Magnetorheological elastomers Damping property Interfacial slipping

CPG Modulates the Omnidirectional Motion of a Hexapod Robot in Unstructured Terrain

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 Bionic Engineering 2023年第2期20卷 558-567页

作者： wei Zhang Qingshuo gong Haoyu Yang Yejing Tang Institute of Intelligent Science and Engineering Harbin Engineering UniversityHarbin150001China

Freely shuttling in complex terrain is a basic skill of multi-legged *** make the hexapod robot have omnidirectional motion ability by controlling only one parameter,this paper uses the motion control method based on Central Pattern Generator(CPG),maps the output signal of CPG to the foot end trajectory space of the hexapod robot,and proposes an omnidirectional gait controller *** addition,to enable the hexapod robot to adapt to unstructured terrain,an adaptive method based on Dynamic Threshold(DT)is proposed to enable the hexapod robot move in all directions without changing the heading angle in unstructured ***,the feasibility of the proposed method is verified by virtual simulation and hexapod robot prototype *** show that the hexapod robot can omnidirectional motion without changing the heading angle and has good stability in unstructured terrain.

关键词： Bionic Robot Central Pattern Generator(CPG) Omnidirectional Gait Unstructured Terrain