检索结果-南通市图书馆

维普期刊数据库博看期刊

Computer Forensics Under Cloud Computing Environment

在线全文

学校读者我要写书评

暂无评论

Journal of Harbin Institute of Technology(New Series) 2014年第6期21卷 34-38页

作者： yi Wang Dept.of Information Science and Technology East China University of Political Science and Law

Cloud computing is becoming the developing trend in the information *** causes many transforms in the related *** order to adapt such changes,computer forensics is bound to improve and integrate into the new *** paper stands on this point,suggests a computer forensic service framework which is based on security architecture of cloud computing and requirements needed by cloud computing *** framework introduces honey farm technique,and pays more attention on active forensics,which can improve case handling efficiency and reduce the cost.

关键词： cloud computing computer forensics security architecture honey farm

计及稳定性和负荷不确定性时长距离输电系统可靠性的研究

在线全文

学校读者我要写书评

暂无评论

天津大学学报 1984年第2期 25-39页

作者：余贻鑫天津大学电力及自动化工程系

本文应用具有周期性转移率的连续时间有限状态马尔可夫链模型[1],对一个长距离输电系统的可靠性进行了研究。其特点是在可靠性计算中计及了稳定性和负荷不确定性的影响。文中首先简短地介绍了这个模型,然后着重介绍了求解该模型所用的... 详细信息

本文应用具有周期性转移率的连续时间有限状态马尔可夫链模型[1],对一个长距离输电系统的可靠性进行了研究。其特点是在可靠性计算中计及了稳定性和负荷不确定性的影响。文中首先简短地介绍了这个模型,然后着重介绍了求解该模型所用的数学方法和求解过程。计算程序是用Fortran语言编写的,在CDC—6400机上做了大量计算。计算结果不仅表明了这个方法可提供许多可靠性信息,是一个有意义的方法,同时也揭示了欲在多机电力系统中应用此法时尚需进一步研究的主要问题。

关键词：长距离输电马尔可夫链模型数学方法系统可靠性状态转移安全域可靠性信息计算程序 Fortran 电力系统

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

GMA-DVB聚合物微球制备

四川大学学报（工程科学版） 2006年第1期38卷 149-153页

作者：陈山玉贺媛赵义马怀昊四川大学高分子科学与工程学院四川成都610065

采用分散聚合法，以乙醇水溶液为介质，聚乙烯吡咯烷酮为分散剂，过氧化二苯甲酰为引发剂制备聚甲基丙烯酸缩水甘油酯-二乙烯苯窄分布聚合物交联微球。研究了分散聚合中，介质的醇水比、水油比、单体配比、引发剂用量以及搅拌速度和搅... 详细信息

采用分散聚合法，以乙醇水溶液为介质，聚乙烯吡咯烷酮为分散剂，过氧化二苯甲酰为引发剂制备聚甲基丙烯酸缩水甘油酯-二乙烯苯窄分布聚合物交联微球。研究了分散聚合中，介质的醇水比、水油比、单体配比、引发剂用量以及搅拌速度和搅拌杆安装方式对微球形貌、粒径、粒径分布及收率的影响。使用数字图像分析仪分析表征聚合物微球的形貌、粒径、粒径分布。反应中使用显微镜跟踪观察了微球的形成过程，探索了分散聚合的反应机理。合成了球形形貌好、粒径在3—5μm之间的GMA—DVB微米级单分散聚合物微球。

关键词：分散聚合窄分布白球机理

Nanostructuring gold wires as highly durable nano- catalysts for selective reduction of nitro compounds and azides with organosilanes

在线全文

学校读者我要写书评

暂无评论

Nano Research 2015年第4期8卷 1365-1372页

作者： Huifang Guo Xiulinq Yan yun Zhi Zhiwen Li Cai Wu Chunliang Zhao Jing Wang Zhixin yu yi Ding Wei He Yadong Li School of Medicine and Tsinghua-Peking Joint Center for Life Sciences Tsinghua University Beijing 100084 China Institute for New Energy Materials and Low-Carbon Technologies and School of Materials Science and Engineering Tianjin University of Technology Tianjin 300384 China School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China Department of Petroleum Engineering University ofStavanger Stavanger 4036 Norway Department of Chemistry Tsinghua University Beijing 100084 China

A general method is developed to prepare durable hybrid nanocatalysts by nanostructuring the surface of gold wires via simple alloying and dealloying. The resulting nanoporous gold/Au （NPG/Au） wire catalysts possess nanoporous skins with their thicknesses on robust metal wires specified in a highly controllable manner. As a demonstration, the as-obtained NPG/Au was shown to be a highly active, chemo-selective, and recyclable catalyst for the reduction of nitro com- pounds and azides using organosilanes as reducing agents.

关键词： nanocatalyst gold catalysis reduction

Mei’s symmetry theorem for time scales nonshifted mechanical systems

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

Theoretical & Applied Mechanics Letters 2021年第5期11卷 246-251页

作者： yi Zhang College of Civil Engineering Suzhou University of Science and TechnologySuzhou 215011China

We focus on Mei symmetry for time scales nonshifted mechanical systems within Lagrangian framework and its resulting new conserved ***,the dynamic equations of time scales nonshifted holonomic systems and time scales nonshifted nonholonomic systems are derived from the generalized Hamilton’s ***,the definitions of Mei symmetry on time scales are given and its criterions are ***,Mei’s symmetry theorems for time scales nonshifted holonomic conservative systems,time scales nonshifted holonomic nonconservative systems and time scales nonshifted nonholonomic systems are established and proved,and new conserved quantities of above systems are *** are illustrated with two examples.

关键词： Mei’s symmetry theorem Nonholonomic system Nonconservative system Time scales Nonshifted calculus of variation

Molecular regulation and genetic control of rice thermal response

在线全文

学校读者我要写书评

暂无评论

The Crop Journal 2021年第3期9卷 497-505页

作者： yi Kan Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics&DevelopmentShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China University of the Chinese Academy of Sciences Beijing 100049China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China

Global warming threatens food ***(Oryza sativa L.),a vital food crop,is vulnerable to heat stress,especially at the reproductive *** we summarize putative mechanisms of high-temperature perception(via RNA secondary structure,the phyB gene,and phase separation)and response(membrane fluidity,heat shock factors,heat shock proteins,and ROS(reactive oxygen species)scavenging)in *** describe how rice responds to heat stress at different cell-component levels(membrane,endoplasmic reticulum,chloroplasts,and mitochondria)and functional levels(denatured protein elimination,ROS scavenging,stabilization of DNA and RNA,translation,and metabolic flux changes).We list temperature-sensitive genetic male sterility loci available for use in rice hybrid breeding and explain the regulatory mechanisms associated with some of *** thermotolerant rice species without yield penalties via natural alleles mining and transgenic editing should be the focus of future work.

关键词： Rice Thermotolerance Thermal response Thermosensitivity Molecular regulation

Touchable cell biophysics property recognition platforms enable multifunctional blood smart health care

在线全文

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2021年第6期7卷 207-219页

作者： Longfei Chen Yantong Liu Hongshan Xu Linlu Ma yifan Wang Le yu Fang Wang Jiaomeng Zhu Xuejia Hu Kezhen yi yi Yang Hui Shen Fuling Zhou Xiaoqi Gao Yanxiang Cheng Long Bai Yongwei Duan Fubing Wang yimin Zhu Affiliations School of Physics&Technology Key Laboratory of Artificial Micro/Nano Structure of Ministry of EducationWuhan UniversityWuhan 430072China Shenzhen Research Institute Wuhan UniversityShenzhen 518000China Department of Hematology Zhongnan HospitalWuhan UniversityWuhan 430071China Department of Laboratory Medicine Zhongnan HospitalWuhan UniversityWuhan 430071China Remin Hospital of Wuhan University Wuhan UniversityWuhan 430060China School of Medicine Zhejiang UniversityHangzhouZhejiang 310002China

As a crucial biophysical property,red blood cell(RBC)deformability is pathologically altered in numerous disease states,and biochemical and structural changes occur over time in stored samples of otherwise normal ***,there is still a gap in applying it further to point-of-care blood devices due to the large external equipment(high-resolution microscope and microfluidic pump),associated operational difficulties,and professional ***,we revolutionarily propose a smart optofluidic system to provide a differential diagnosis for blood testing via precise cell biophysics property recognition both mechanically and *** of the RBC population is caused by pressing the hydrogel via an integrated mechanical transfer *** biophysical properties of the cell population are obtained by the designed smartphone *** intelligence-based modeling of cell biophysics properties related to blood diseases and quality was developed for online *** currently achieve 100%diagnostic accuracy for five typical clinical blood diseases(90 megaloblastic anemia,78 myelofibrosis,84 iron deficiency anemia,48 thrombotic thrombocytopenic purpura,and 48 thalassemias)via real-world prospective implementation;furthermore,personalized blood quality(for transfusion in cardiac surgery)monitoring is achieved with an accuracy of 96.9%.This work suggests a potential basis for next-generation blood smart health care devices.

关键词： smart property enable

A meeting to celebrate the centennial birthday of yuan-Cheng Fung:the father of modern biomechanics and foreign member of the Chinese Academy of Sciences

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

National Science Review 2019年第6期6卷 1100-1101页

作者： yi Cao Department of Physics Nanjing University

On 20–23 September 2019, many students, friends and colleagues of Professor yuan-Cheng Fung, together with more than120 scientists and engineers worldwide, gathered at Catamaran Resort in San Diego to attend the first International Conference on Biomechanics and Medical Engineering(ICBME2019)and celebrate the 100th birthday of Fung, the father of modern biomechanics and the creator of tissue engineering.

关键词： A meeting to celebrate the centennial birthday of yuan-Cheng Fung:the father of modern biomechanics and foreign member of the Chinese Academy of Sciences

A 2×2 SOI mach-zehnder thermo-optical switch based on strongly guided paired multimode interference couplers

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Optoelectronics Letters 2007年第5期3卷 334-336页

作者： YANG Di WANG yi-quan LV Mi CHEN Shao-wu yu Jin-zhong Institute of Physics and Engineering Central University for Nationalities Beijing 100081China. State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China.

A silicon-on-insulator 2× 2 Mach-Zehnder thermo-optical switch is developed based on strongly guided paired multimode interference couplers. The multimode-interference couplers were etched deeply for improving coupler characteristics such as self-imaging quality, uniformity and fabrication toierance. The proposed switch achieves good performances, including a low insertion loss of -11.0dB, a fiber-waveguide coupling loss of-4.3dB and a fast response speed measured to be 3.5 and 8.8 μs for raise and fall switching time, respectively.

关键词：光学开关干涉连接器集成电路多状态