检索结果-南通市图书馆

Adhesion and corrosion resistance of polycaprolactone coating on NiTi alloy surface after alkali heat pretreatment

Biosurface and Biotribology 2022年第4期8卷 307-314页

作者： Zhihui Zhang Yanan Yang Yunting Guo pengwei sha Zezhou Xu Zhenglei Yu Jiashun Si Zhengao Zhang Jia Guo Yifan Chen Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchunChina Weihai Institute for Bionic Jilin UniversityWeihaiChina State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchunChina Beijing Reserarch Institute of Automation for Machinery Industry Co. LtdBeijingChina Key Laboratory of Automobile Materials Ministry of EducationCollege of Materials Science and EngineeringJilin UniversityChangchunChina

Selective laser melting of nickel-titanium alloy(SLM-NiTi)can precisely control the size of the sample molding structure and has attracted extensive attention due to its special superelasticity and shape memory effect.However,the biological inertness and poor corrosion resistance of SLM-NiTi alloy limit their wide application as biomedical implant materials.In this study,polycaprolactone(PCL)coating was prepared on SLM-NiTi alloy by dipping and pulling method,and the effects of alkali heat pretreatment on the morphology,adhesion,corrosion resistance,long-term stability and biomineralisation of the PCL coatings were investigated.The results showed that PCL coating can substan-tially improve the performance of SLM-NiTi alloy,and the PCL coating after alkali heat pretreatment has higher adhesion(increased from 1,747 to 2,498 mN)and lower corrosion current density(reduced by about an order of magnitude compared to PCL coating alone).In addition,the necessary stability,biomineralisation and biocompatibility ability of coatings were also further improved.Therefore,the alkali heat pretreated PCL-coated SLM-NiTi alloy has good application prospects in implants due to its superior properties.

关键词： adhesion alkali heat pretreatment corrosion resistance PCL coating SLM-NiTi alloy

来源：

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

Synthesis and Insecticidal Evaluation of Novel Anthranilic Diamides Derivatives Containing 4-Chlorine Substituted N-Pyridylpyrazole

引用

Chinese Journal of Chemistry 2021年第1期39卷 75-80页

作者： Huangong Li Yangyang Zhao pengwei Sun Li Gao Yuxin Li Lixia Xiong Na Yang sha Zhou Zhengming Li State Key Laboratory of Elemento-Orgonic Chemistry Research Institute of Elemento-Orgonic ChemistryCollege of ChemistryNonkai UniversityTianjin 300071China

To search for potent insecticides targeting at ryanodine receptors(RyRs),a series of novel anthranilic diamides analogs containing 4-chlorine N-pyridylpyrazole were designed and synthesized.Their insecticidal activities were evaluated and the preliminary struc ture-activity relationships(SARs)were discussed.The insecticidal results showed that some of the compounds(8a-8h,8m,8n)exhibited good larvicidal activities against oriental armyworm at 2.5 mg·L^(-1),and compound 8m possessed 60%insecticidal activityat 0.5 mg·L^(-1).For diamondback moth,8m exhibited better activity than Chlorantraniliprole at a hundred fold preference.

关键词： Synthesis design Anthranilic diamides Insecticidal activity RyRs Structure-activity relationships

来源：

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

Targeted Synthesis of Anthranilic Diamides Insecticides Containing Trifluoroethoxyl Phenylpyrazole

引用

Chemical Research in Chinese Universities 2021年第3期37卷 655-661页

作者： LI Huangong ZHAO Yangyang SUN pengwei GAO Li XIONG Lixia YANG Na ZHOU sha LI Yuxin LI Zhengming State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic ChemistryCollege of ChemistryNankai UniversityTianjin300071P.R.China

A series of novel anthranilic diamides analogues(9a-9t)containing trifluoroethoxyl pyrazole moiety was designed and synthesized and their insecticidal bioactivities against Mythimna separata(Walker,M.separata)and Plutellaxylostella(P.xylostella)were evaluated.The structures of the title compounds were confirmed by^(1)H NMR,^(13)C NMR and HRMS.Preliminary insecticidal activities showed that some of the title compounds possessed good to excellent bioactivities towards M.separata and P.xylostella.Compounds 9c and 9t exhibited 100%mortality rate against M.separate at 0.2 mg/L.For the P.xylostella,the synthesized compounds(9c-9e,9i and 9o)showed 70%,80%,75%,65%and 60%insecticidal activities at 1×10^(−6)mg/L,respectively,higher than that of chlorantraniliprole(0).Based on excellent insecticidal activities,the mode of the action was tested by the calcium-imaging technique,the results of which demonstrated that the novel compounds shared the same target with chlorantraniliprole.The binding pose of the most active compound 9t in RyRs of P.xylostella was predicted by molecular docking,which showed that compound 9t interacted with the residues Glu140(A)and His147(A)via hydrogen bond.

关键词： Trifluoroethoxylphenylpyrazole Anthranilic diamide derivative Insecticidal bioactivity Mode of the action Molecular docking

来源：

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

Design,Synthesis,Biological Evaluation and SARs of Anthranilic Diamide Derivatives Containing Pyrrole Moieties

引用

Chemical Research in Chinese Universities 2020年第6期36卷 1168-1173页

作者： ZHAO Yangyang LI Huangong SUN pengwei GAO Li ZHOU sha XIONG Lixia YANG Na LI Yuxin LI Zhengming State Key Laboratory of Elemento-Organic Chemistry Institute of Elemento-Organic ChemistryNankai UniversityTianjin 300071P.R.China

In order to find a new variety of ryanodine receptor(RyR)regulator with greater biological activity,a se-ries of anthranilic diamide derivatives possessing pyrrole structure was designed and synthesized in this study.The pyrrole derivatives were evaluated for their insecticidal activity against Mythimna separata and Plutella xylostella.As indicated by the preliminary biological activities,compounds 12h-12j and 121-12n exhibited a remarkable in-secticidal activity against M.separata at 0.25 mg/L.Compared to control chlorantraniliprole.compound 12i exhibited more excellent insecticidal activity at 0.1 mg/L.Meanwhile,compounds 12c,12h,12i.12j.121,and 12m were selected to test the insecticidal activity against P xylostella,which led to the desirable insecticidal activity at 1x103 mg/L.Notably,compound 121 demonstrated 47%insecticidal activity at 5×10^(-6) mg/L over the control.In addition,the biological mechanism of action of compound 12i was investigated by means of insect clectrophysiology experiment.

关键词： Ryanodine receptors(RyRs)activator Pyrrole Anthranilic diamide Insecticidal activity Mechanism of action

来源：

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

弹性移动云计算的研究进展与安全性分析

引用

计算机研究与发展 2015年第6期52卷 1362-1377页

作者：李鹏伟傅建明李拴保吕少卿沙乐天武汉大学计算机学院武汉430072 空天信息安全与可信计算教育部重点实验室(武汉大学) 武汉430072 软件工程国家重点实验室(武汉大学) 武汉430072 综合业务网理论及关键技术国家重点实验室(西安电子科技大学) 西安710071 南京邮电大学计算机学院南京210046

弹性移动云计算(elastic mobile cloud computing,EMCC)中,移动设备按照实时需求将部分任务迁移到云端执行,无缝透明的利用云资源增强自身功能.将现有EMCC方案分为雇佣云端完成部分计算密集任务的计算迁移型移动云计算(computing migrat... 详细信息

弹性移动云计算(elastic mobile cloud computing,EMCC)中,移动设备按照实时需求将部分任务迁移到云端执行,无缝透明的利用云资源增强自身功能.将现有EMCC方案分为雇佣云端完成部分计算密集任务的计算迁移型移动云计算(computing migration-mobile cloud computing,CM-MCC)和通过云端的虚拟移动设备来辅助或代替移动设备完成多种任务的云端代理型移动云计算(cloud agentmobile cloud computing,CA-MCC)两类,分别对CM-MCC,CA-MCC的适用场景、实现流程、关键技术、存在问题及相应解决方法进行研究并指出其发展方向.对EMCC所面临的主要安全威胁,包括用户的错误操作或恶意行为、恶意代码、通信安全以及虚拟系统漏洞、多租户、不安全资源等云安全问题进行分析并研究相应防御方法,指出安全问题将是EMCC研究的重点和难点.

关键词：移动云计算计算迁移云端代理虚拟移动设备安全威胁

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于细胞自动机的软键盘布局随机化方案

引用

北京交通大学学报 2013年第5期37卷 105-111,131页

作者：李鹏伟傅建明沙乐天丁爽武汉大学计算机学院湖北武汉430072 武汉大学空天信息安全与可信计算教育部重点实验室湖北武汉430072 武汉大学软件工程国家重点实验室湖北武汉430072

软键盘被广泛应用于敏感信息输入,但攻击者有可能通过消息截获、控件分析、偷窥、截屏或鼠标记录等方法得到软键盘的输入信息.本文总结和拓展了攻击方法并对相应防御措施进行了探讨;针对键盘布局随机化这一重要防御措施,对现有各方案进... 详细信息

软键盘被广泛应用于敏感信息输入,但攻击者有可能通过消息截获、控件分析、偷窥、截屏或鼠标记录等方法得到软键盘的输入信息.本文总结和拓展了攻击方法并对相应防御措施进行了探讨;针对键盘布局随机化这一重要防御措施,对现有各方案进行分析;最后设计实现了一种基于细胞自动机的,与输入信息内容和输入过程相关联的软键盘布局随机化方案CAR,实验表明,这一方案具有良好的安全性和可用性.

关键词：信息安全键盘记录器软键盘细胞自动机随机化

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：