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Extension and application of a database for the rapid identification of Vibrio using MALDI-TOF MS

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Acta Oceanologica Sinica 2020年第10期39卷 140-146页

作者： Jing Wu Yuexia Zhou Xiaofei liu Yuan Cao Chengjin Hu yingjian Chen Departments of Laboratory Medicine The 960th Hospital of the PLA Joint Logistics Support ForceJinan 250031China Teaching and Research Office of Medical Laboratory Science Heze Medical CollegeHeze 274000China

Rapid and accurate identification of Vibrio species has been problematic because phenotypic characteristics are variable within species and biochemical identification requires two or more days to ***-assisted laser desorption ionization–time of flight mass spectrometry(MALDI-TOF MS)has become a powerful tool for rapidly distinguishing between related bacterial ***,its accuracy depends on the number of strains in a *** the current study,we extend and apply the Vibrio database based on MALDI-TOF MS.A total of 74 strains of Vibrio representing 28 species were identified and included in new database.A phylogenetic tree based on rpoB sequence and dendrograms were *** analyzed 30 clinical Vibrio of three species to evaluate the new database and carried out PCA dendrogram analyses for differences of *** created a new database that offered fast and accurate Vibrio *** and PCA dendrogram analyses provided technical support to track sources and incidences of Vibrio *** addition,the discovery of characteristic and differential peaks is useful for the future identification of *** represents a powerful tool for the rapid and accurate classification and identification of Vibrio and closely related species.

关键词： database Vibrio MALDI-TOF MS rpoB dendrograms

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侧信道能量信息测试向量泄漏评估技术

电子与信息学报 2023年第9期45卷 3109-3117页

作者：郑震严迎建刘燕江战略支援部队信息工程大学郑州450001

侧信道能量分析攻击技术以其计算复杂度低和通用性强等优势,给各类密码产品带来了严峻的安全挑战。抗能量分析攻击能力的评估已经成为密码产品安全性测评的重要环节。测试向量泄漏评估(TVLA)是一种基于假设检验的能量信息泄漏评估方法,... 详细信息

侧信道能量分析攻击技术以其计算复杂度低和通用性强等优势,给各类密码产品带来了严峻的安全挑战。抗能量分析攻击能力的评估已经成为密码产品安全性测评的重要环节。测试向量泄漏评估(TVLA)是一种基于假设检验的能量信息泄漏评估方法,具有简单高效和可操作性强等特点,目前被广泛应用于密码产品的安全性评估实验中。为全面把握TVLA技术机理及研究现状,该文首先对TVLA技术进行了概述,阐述了其实现原理并介绍了其实施过程,紧接着对特定和非特定两种TVLA的优势与不足进行了对比,随后参考已有研究,对TVLA的局限性进行了深入分析和归纳,在此基础上重点介绍并分析了已有的TVLA的改进方法,最后对TVLA未来可能的发展方向进行了展望。

关键词：安全评估侧信道能量分析攻击测试向量评估

Method Based on Time Randomization to Resist Fault Sensitivity Analysis

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Journal of Beijing Institute of Technology 2017年第3期26卷 411-417页

作者： yingjian Yan Jijun Xu Shoucheng Wang Zhong Wang Min liu Institute of Information Science and Technology Zhengzhou 450001China

A fault sensitivity analysis（FSA）-resistance model based on time randomization is *** randomization unit is composed of two parts,namely the configurable register array（R-A）and the decoder（chiefly random number generator,RNG）.In this way,registers chosen can be either valid or invalid depending on the configuration information generated by the ***,the fault sensitivity information can be ***,based on this model,a defensive scheme is designed to resist both fault sensitivity analysis（FSA）and differential power analysis（DPA）.This scheme is verified with our experiments.

关键词： block cipher time randomization fault sensitivity analysis (FSA) differential power a-nalysis

基于物联网的110 kV电缆管井智能监测系统建设与应用

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四川电力技术 2020年第6期43卷 75-80,91页

作者：刘云龙周大明周勇黄会贤曾祥端谢弦邵愚刘英健国网重庆市江北供电分公司重庆401120 国网重庆市电力公司重庆400015

电力电缆在城市供电系统中起关键作用,电缆管井用于电缆接头制作或检修施工使用。日常运行过程中,电缆管井可能会出现电力电缆本体或中间接头过热,环境温度过高、水位过高等异常状态,大量非正常烟雾及非法入侵等现象也威胁着电缆供电系... 详细信息

电力电缆在城市供电系统中起关键作用,电缆管井用于电缆接头制作或检修施工使用。日常运行过程中,电缆管井可能会出现电力电缆本体或中间接头过热,环境温度过高、水位过高等异常状态,大量非正常烟雾及非法入侵等现象也威胁着电缆供电系统的可靠性。介绍了一套用于对110 kV电缆管井智能监测的系统,包括智能感知系统、监控主机系统及在线监测终端系统。首先,介绍了由多智能传感器组成的感知系统,通过LoRa技术同井上监控主机无线通信,数据推算及实际测试结果表明本套系统依靠电池能够满足长时间续航要求;然后,介绍了多功能后台远程监测终端系统,后台系统基于物联网NB-loT技术无线连接远端监控主机。本套系统在深管井中得到应用,能实时感知系统运行健康状况,极大便利运行维护人员,对确保电力电缆安全运行,提高供电可靠性具有重要意义。

关键词：电力电缆电缆管井智能感知物联网

河南省焦作市城市居民自评健康状况及影响因素分析

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郑州大学学报（医学版） 2016年第5期51卷 631-634页

作者：王洁玉时松和范军星朱英建肖建霞刘海霞王鸟田庆丰郑州大学公共卫生学院社会医学与卫生事业管理教研室郑州450001 郑州大学公共卫生学院卫生统计学教研室郑州450001 河南省卫生和计划生育委员会统计信息中心郑州450003 河南省医学科学院卫生政策研究中心郑州450003 焦作市卫生局规划财务审计科焦作454150

目的:了解河南省焦作市城市居民自评健康状况及其影响因素。方法:采用多阶段分层整群随机抽样的方法抽取河南省焦作市1 803名15岁及以上城市居民,调查其基本情况。利用EQ-5D量表调查居民自评健康状况。采用时间权衡法换算表,将居民自评... 详细信息

目的:了解河南省焦作市城市居民自评健康状况及其影响因素。方法:采用多阶段分层整群随机抽样的方法抽取河南省焦作市1 803名15岁及以上城市居民,调查其基本情况。利用EQ-5D量表调查居民自评健康状况。采用时间权衡法换算表,将居民自评健康状况转化成ED-5Q健康指数,分析影响居民自我健康状况的因素。结果:居民自我健康状况评价中,有问题的主要是疼痛/不舒服、焦虑/抑郁和行动。对居民自评得分有影响的因素是年龄、文化程度、吸烟状况和是否有慢性病(P<0.05)。结论:居民自评健康状况整体良好,高龄和慢性病是影响居民健康的主要因素。

关键词：城市居民自我评价健康状况影响因素

Effects of grain boundary ternary alloy doping on corrosion resistance of(Ce,Pr,Nd)-Fe-B permanent magnets

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Journal of Rare Earths 2021年第8期39卷 979-985页

作者： Xin Wang Minggang Zhu Feng Xi Meiling Zhang Fei liu yingjian Guo Lele Zhang Guangrui Zhang Wei Li Division of Functional Materials Central Iron&Steel Research InstituteBeijing 100081China School of Science Inner Mongolia University of Science&TechnologyBaotou 014010China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

To satisfy the application of different environments,grain boundary doping is commonly used in the preparation of sintered magnets to improve the coercivity and the corrosion *** this paper,the alloys were prepared by mixing different ratios of the master alloy(Ce,Pr,Nd)-Fe-B and the sintering aid(Pr,Nd)-*** coercivity of sintered(Ce,Pr,Nd)-Fe-B magnet is substantially enhanced by doping 2 wt%of(Pr,Nd)-Al,while the maximum energy product decreases *** systematically investigated the corrosion behavior and micro structure of the sintered magnets in order to determine the mechanism of the *** sintered(Ce,Pr,Nd)-Fe-B magnets with 2 wt% of(Pr,Nd)-Al addition exhibit the decreasing corrosion rate compared with others,due to the distribution of intergranular *** electrode potential difference between the main phase and the RE-rich phase is reduced by the addition of Al,improving the potential and stability of RE-rich phase due to the higher electrode potential of Al than that of Nd,Pr or *** addition,the element distribution of the magnets doped by(Pr,Nd)-Al indicates that the Al-rich shell formed at the marginal area of the Ce-rich phase improves its *** re,intergranular adding te rnary(Pr,Nd)-Al alloy powders results in both high coe rcivity and good corrosion resistance synchronously.

关键词： Grain boundary doping Sintered(Ce,Pr,Nd)-Fe-B magnets (Pr,Nd)-Al Magnetic properties Corrosion resistance Rare earths

Engineering heterointerfaces coupled with oxygen vacancies in lanthanum–based hollow microspheres for synergistically enhanced oxygen electrocatalysis

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Journal of Energy Chemistry 2021年第9期30卷 503-511页

作者： Jie Zhanga Jinwei Chen Yan Luo Yihan Chen Chenyang Zhang yingjian Luo Yali Xue Honggang liu Gang Wang Ruilin Wang College of Materials Science and Engineering Sichuan UniversityChengdu 610065SichuanChina Engineering Research Center of Alternative Energy Materials&Devices Ministry of EducationChengdu 610065SichuanChina

The development of high–efficiency and low–cost bifunctional oxygen electrocatalysts is critical to enlarge application of zinc–air batteries(ZABs). However, it still remains challenges due to their uncontrollable factor at atomic level during the catalysts preparation, which requires the precise regulation of active sites and structure engineering to accelerate the reaction kinetics for both oxygen reduction reaction(ORR) and oxygen evolution reaction(OER). Herein, a novel Co–doped mixed lanthanum oxide and hydroxide heterostructure(termed as Co–La MOH|OV@NC) was synthesized by pyrolysis of La–MOF–NH_(2) with spontaneous cobalt doping. Synergistic coupling of its hollow structure, doping effect and abundant oxygen vacancies creates more active sites and leads to higher electroconductivity, which contribute to the better performance. As employed as a bifunctional oxygen electrocatalyst, the resulting 3 Co–La MOH|OV@NC exhibits superior electrocatalytic activity for both ORR and OER. In assembled ZAB, it also demonstrates an excellent power density of 110.5 m W cm^(-2), high specific capacity of 810 m Ah g_(Zn)^(-1), and good stability over 100 h than those of Pt/C + RuO_(2). Density functional theory(DFT) calculation reveals that the heterointerfaces coupled with oxygen vacancies lead to an enhanced charge state and electronic structure, which may optimize the conductivity, charge transfer, and the reaction process of *** study provides a new strategy for designing highly efficient bifunctional oxygen electrocatalysts based on rare earth oxide and hydroxides heterointerface.

关键词： Metal-organic frameworks Heterostructured hybrid Oxygen vacancies Bifunctional electrocatalyst Zinc-air batteries

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技术创新助推兖矿集团机械制修厂快速发展

煤矿现代化 2002年第1期11卷 8-8页

作者：刘迎建付仰国兖矿集团机厂

兖矿集团机械制修厂是为保证兖州矿区煤炭生产而建立起来的配套厂,但是,在进入市场经济之后,单一的生产结构和产品结构不能适应市场竞争的需要.为此,近几年来,这个厂积极转变观念,坚持依靠科技进步,大力进行技术创新,建立、完善技术创... 详细信息

兖矿集团机械制修厂是为保证兖州矿区煤炭生产而建立起来的配套厂,但是,在进入市场经济之后,单一的生产结构和产品结构不能适应市场竞争的需要.为此,近几年来,这个厂积极转变观念,坚持依靠科技进步,大力进行技术创新,建立、完善技术创新体系,开发新产品,培育企业核心竞争力,增强市场竞争能力,为企业快速发展提供了不竭动力.

关键词：制度创新经营机制激励政策技术创新兖矿集团机械制修厂

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基于双样本KS检验的非特定TVLA方法

通信学报 2023年第5期44卷 137-147页

作者：郑震严迎建蔡爵嵩刘燕江信息工程大学密码工程学院河南郑州450001

测试向量泄露评估(TVLA)在能耗样本量较少时易出现“假阴性”错误。针对该问题进行了理论推导,发现对非特定TVLA,能量迹中存在泄露的采样点处得到的检验统计量t值随能耗样本量变化而变化,非泄露点处的t值则无显著变化,因此当存在泄露时... 详细信息

测试向量泄露评估(TVLA)在能耗样本量较少时易出现“假阴性”错误。针对该问题进行了理论推导,发现对非特定TVLA,能量迹中存在泄露的采样点处得到的检验统计量t值随能耗样本量变化而变化,非泄露点处的t值则无显著变化,因此当存在泄露时不同能耗样本量下得到的t值序列的分布不同。据此提出在不同样本量下实施非特定TVLA并对得到的t值序列实施双样本KS检验以评估泄露。分别在无防护对齐仿真能耗数据、加防护对齐能耗数据集DPAContestv4_2和加防护非对齐自测能耗数据上进行了验证,结果表明在对齐的仿真能耗数据和DPAContestv4_2数据集上所提方法检测出泄露所需样本量较其他方法均有所减小,最多分别减小了46.1%和39.0%;在非对齐的自测能耗数据进行对齐处理后,所提方法所需能耗样本量较其他方法同样有所减小,最多减小了29.4%。因此所提方法能够有效减小能耗样本量较小时出现“假阴性”错误的概率。

关键词：侧信道测试向量泄露评估假阴性双样本KS检验