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Plastic Deformation Mechanisms of Base Material and Friction Stir Welded AZ31B-H24 Magnesium Alloy

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Materials Sciences and Applications 2013年第6期4卷 357-364页

作者： Michael regev Stefano Spigarelli Department of Mechanical Engineering ORT Braude College Karmiel Israel Dipartimento di Meccanica Università Politecnicadelle Marche Ancona Italy

The friction stir welding process (FSW) was developed in the United Kingdomin the early 1990s. During FSW, the frictional heat that is generated is effectively utilized to facilitate material consolidation and eventual joining with the aid of axial pressure. The process is, therefore, a non-fusion welding process. FSW was applied in the current study in order to weld AZ31B-H24 alloy plates. Each of the different zones of the welded joint underwent optical metallographic characterization: the parent material, the Heat Affected Zone (HAZ), the Thermo-Mechanically Affected Zone (TMAZ), and the weld nugget. Optical metallography revealed deformation twinning at the TMAZ, grain refinement at the HAZ and evidence of heavy plastic deformation at the nugget. Creep tests at 100°C, 200°C and 300°C were conducted both on the parent material and on the friction stir welded specimens. Two different creep regimes seem to exist, a high stress regime in which creep is controlled by dislocation climb, and a low stress regime in which Grain-Boundary Sliding (GBS) becomes the dominant mechanism. Transmission electron microscopy of welded and non-welded specimens that underwent creep at 100°C revealed the existence of dislocation segments that do not lie on the basal planes. It is therefore assumed that other slip systems are active, in addition to the ?basal slip systems known to be the only ones active in pure magnesium up to about 180°C. The proposed deformation mechanism involves dislocation gliding on basal and non-basal planes assisted by twinning and GBS.

关键词： Friction Stir Welding Magnesium Alloys AZ31 Creep Dislocations

Factors Affecting the Decision to Remain in the Hospitality Industry Among Hotel Front Office Desk Employees： The Case of Israel

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Journal of Tourism and Hospitality Management 2014年第9期2卷 364-375页

作者： Teitler regev Sharon Oksana Goziker Shosh Shahrabani Max Stern Academic College of Emek Yezreel Galilee Israel Kirmeret College on the Sea of Galilee Galilee Israel Max Stem Academic College of Emek Yezreel Galilee Israel

In the hotel industry, the front office serves as one of the most important points of contact with guests. One of the main problems in the hospitality industry is the high rate of turnover. This study examines skills and perceptions among front office employees in Israel, most of whom are young, single, and female. The study examines the main factors affecting an employee＇s intentions to remain in the hospitality industry. In addition, the study compares job perceptions and required skills between hotel chain and non-chain employees. The results suggest that being male, being an immigrant, and having a higher education raise intentions to remain in the hotel industry. Scoring higher on perceptions of the job increases an employee＇s intentions to remain in the industry as well. Higher position has a positive effect on the probability of remaining in the industry, while working for a chain does not affect this probability. In addition, this study attempts to offer front office managers some useful recommendations.

关键词： human resources skills hotels front office Israel

Temperature Measurements During Dental Cutting Using an Internally Cooled Diamond Dental Bur

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材料科学与工程（中英文B版） 2012年第10期2卷 551-559页

作者： Uri Ben-Hanan Michael regev Herbert Judes Mechanical Engineering Department Ort Braude College of Engineering Karmiel Israel Head Mechanical Engineering Department Ort Braude College of Engineering Karmiel Israel School of Dental Medicine Tel Aviv University Tel Aviv Israel

Thermal Stability and DSC Studies of Melt-Spun Mg50Cu15Y5 and Mg80Cu10Y10

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材料科学与工程（中英文A版） 2011年第2X期1卷 168-173页

作者： Alexander Katz-Demyanetz Haim Rosenson Zamir Koren Michael regev Israel Institute of Metals - Foundry Laboratory Technion-lsrael Institute of Technology Technion City Haifa 32000 Israel Mechanical Engineering Department Ort Braude College of Engineering Karmie121982 Israel

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最新的捕获细胞图片的方式横空出世

张江科技评论 2019年第5期 78-79页

作者： WEINSTEIN J A regev a ZHANG F

利用标记的核酸堆叠DNA碱基,采用计算机算法解析碱基堆叠信号,直接观测基因组信息创新点从光学显微镜、电子显微镜、荧光显微镜、光片显微镜到近年来发展火热的用于观察蛋白质三维立体结构的冷冻电镜,显微镜的使用性能逐级在提升,标志... 详细信息

利用标记的核酸堆叠DNA碱基,采用计算机算法解析碱基堆叠信号,直接观测基因组信息创新点从光学显微镜、电子显微镜、荧光显微镜、光片显微镜到近年来发展火热的用于观察蛋白质三维立体结构的冷冻电镜,显微镜的使用性能逐级在提升,标志着显微技术

关键词：光学显微镜基因组信息

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层状溶致液晶中Ag纳米粒子的掺杂

中国科学（B辑） 2001年第5期31卷 405-410页

作者：陈晓牛林隋震鸣朱宝林袁晓斌杨孔章 S. Efrima O. regev Wang Wei 山东大学胶体与界面化学教育部重点实验室济南250100 Department of Chemistry Ben-Gurion University of the Negev Beer-Shevaisrael84105

通过在具有长程有序结构的有机溶致液晶内嵌入预制的、表面性质可调控的银纳米粒子, 得到了亲水与亲油介观空间内同时嵌入纳米粒子的无机/有机杂合体. 掺杂前后液晶结构的变化和杂合体稳定性用小角X射线散射和偏振光学显微镜等进行了表... 详细信息

通过在具有长程有序结构的有机溶致液晶内嵌入预制的、表面性质可调控的银纳米粒子, 得到了亲水与亲油介观空间内同时嵌入纳米粒子的无机/有机杂合体. 掺杂前后液晶结构的变化和杂合体稳定性用小角X射线散射和偏振光学显微镜等进行了表征. 结果表明, 表面活性剂双层膜与导入纳米粒子间的立体化学匹配及相互作用是影响杂合体稳定性的重要因素.

关键词：银纳米粒子溶致液晶模板组装杂合体掺杂结构表征稳定性

Redefinition of Fatty Liver Disease from NAFLD to MAFLD through the Lens of Drug Development and Regulatory Science

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Journal of Clinical and Translational Hepatology 2022年第2期10卷 374-382页

作者： Yasser Fouad Melissa Palmer Minjun Chen Arie regev Rajarshi Banerjee Rob Myers Robert Riccio Richard Torstenson Ramy Younes Puneet SArora Henrik Landgren Morten A.Karsdal Martin Blake David A.Shapiro Hans-Juergen Gruss Muhammad Y.Sheikh Dina Attia Steven Bollipo Alastair D.Smith Bradley Freilich Robert G.Gish Detlef Schuppan Department of Gastroenterology Hepatologyand Endemic MedicineFaculty of MedicineMinia UniversityMiniaEgypt Gan-nex/Ascletis Pharma Co Ltd BeijingChina Liver Consulting LLC New YorkNYUSA Division of Bioinformatics and Biostatis-tics National Center for Toxicological ResearchUS Food and Drug AdministrationJeffersonARUSA Eli Lilly and Company IndianapolisINUSA Perspectum Diagnostics Ltd OxfordUK Gilead Sciences Inc Foster CityCAUSA Syneos Health LLC MorrisvilleNCUSA Allergan Marlow International BuckinghamshireUKAstraZenecaCambridgeUK Boehringer Ingel-heim International GmbHIngelheimGermany Genentech IncSouth San FranciscoCAUSA AbbVie MarlowBuck-inghamshireUK Nordic Bioscience A/S HerlevDenmark Resonance Health BurswoodWAAustralia Intercept Phar-maceuticals Inc San DiegoCAUSA Fresno Clinical Research Center FresnoCAUSA Gastroenterology and Hepatology Department Beni-Suef UniversityBeni SuefEgypt Department of Gastroenterology and Endoscopy John Hunter HospitalNewcastleNSWAustralia School of Medicine and Public Health University of NewcastleNewcastleNSWAustralia Kan-sas City Research Institute Kansas CityMOUSA Division of Gastroenterology and Hepatology Loma Linda UniversityLoma LindaCAUSA Institute of Translational Immunology and Research Center for Immune Therapy University Medical CenterMainzGermany Division of Gastroenterology Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA

Metabolic(dysfunction)-associated fatty liver disease(MAFLD)affects a third of the population and is a leading cause of liver-related *** no effective treatments exist,novel approaches to drug development are ***,outdated terminology and definitions of the disease are hampering efforts to develop new drugs and *** international consensus panel has put forth an influential proposal for the disease to be renamed from nonalcoholic fatty liver disease(NAFLD)to MAFLD,includ-ing a proposal for how the disease should be *** allies with the many stakeholders in MAFLD care―including patients,patients’advocates,clinicians,researchers,nurse and allied health groups,regional societies,and others―we are aware of the negative consequences of the NAFLD term and *** share the sense of urgency for change and will act in new ways to achieve our *** there is much work to be done to overcome clinical inertia and reverse worrisome recent trends,the MAFLD initiative provides a firm foundation to build *** provides a roadmap for moving for-ward toward more efficient care and affordable,sustainable drug and device innovation in MAFLD *** hope it will bring promising new opportunities for a brighter future for MAFLD care and improve care and outcomes for patients of one of the globe’s largest and costliest public health *** this viewpoint,we have revisited this initiative through the perspectives of drug development and regulatory science.

关键词： NAFLD MAFLD NASH Fatty liver disease Liver Fibrosis

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浅谈中波广播发射天线的原理与维护

中国有线电视 2020年第1期 63-64页

作者：祖里比亚·热吉甫新疆维吾尔自治区广电局761台

中波发射天线是广播电台重要的基础设施,中波发射天线的运行质量直接关系着广播信号的传输效果。中波发射技术在进行信号传输时,外界因素对信号传输质量的影响效果较小,在传输过程中,信号的损耗量也较低;另外,中波发射技术的信号传输距... 详细信息

中波发射天线是广播电台重要的基础设施,中波发射天线的运行质量直接关系着广播信号的传输效果。中波发射技术在进行信号传输时,外界因素对信号传输质量的影响效果较小,在传输过程中,信号的损耗量也较低;另外,中波发射技术的信号传输距离也较远,传输的稳定性较高,这样就可以更好地满足广播电台的工作需要。对中波广播发射天线的主要原理加以分析,并根据当前中波广播发射天线的现状,提出相应的应对策略,以供参考。

关键词：中波广播发射天线设备原理维护策略

恶性疟原虫感染的红细胞可能通过囊泡传递抗性

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中国肿瘤生物治疗杂志 2014年第4期21卷 412-412页

作者：胡翔韩超峰 regev-Rudzki N Wilson DW Carvalho TG

疟疾是世界十大传染病之一,多发于非洲、东南亚、南美洲。由于疟疾的危害很大,会损伤人类的各种组织器官,发病的症状各不相同,所以在各个地方有着不同的称呼：＂瘴气＂、＂打摆子＂、＂冷热病＂等等。后来经过科学家的探索,发现疟疾是... 详细信息

疟疾是世界十大传染病之一,多发于非洲、东南亚、南美洲。由于疟疾的危害很大,会损伤人类的各种组织器官,发病的症状各不相同,所以在各个地方有着不同的称呼：＂瘴气＂、＂打摆子＂、＂冷热病＂等等。后来经过科学家的探索,发现疟疾是一种经蚊子传播到人体内的疟原虫引起的疾病,由于疟疾能够感染人的红细胞,并且周期性地爆发,所以才有了周期性发热的典型病症。

关键词：恶性疟原虫感染红细胞周期性发热抗性传递囊泡组织器官疟疾