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Significant exercise limitations after recovery from MIS-C related myocarditis

World Journal of Pediatrics 2023年第12期19卷 1149-1154页

作者： Gur Mainzer Merav Zucker-Toledano Moneera Hanna ronen bar-yoseph Einat Kodesh Pediatric Heart Institute Edmond and Lily Safra Children’s HospitalSheba Medical Center52621 Tel HashomerIsrael Pediatric Cardiology Department Hadassah Medical CenterJerusalemIsrael Pediatric Cardiology Unit Padeh Medical CenterPoriyaIsrael Pediatric Cardiology Institute Ruth Children’s HospitalRambam Health Care CampusHaifaIsrael Pediatric Pulmonary Institute Ruth Children’s HospitalRambam Health Care CampusHaifaIsrael The Technion Faculty of Medicine HaifaIsrael Department of Physical Therapy Faculty of Social Welfare and Health ScienceUniversity of HaifaHaifaIsrael

Background Myocarditis is one of the presentations of multisystemic infammatory syndrome in children(MIS-C)following coronavirus disease 2019(COVID-19).Although the reported short-term prognosis is good,data regarding medium-term functional capacity and limitations are *** study aimed to evaluate exercise capacity as well as possible cardiac and respiratory limitations in children recovered from MIS-C related *** Fourteen patients who recovered from MIS-C related myocarditis underwent spirometry and cardiopulmonary exercise testing(CPET),and their results were compared with an age-,sex-,weight-and activity level-matched healthy control group(n=14).Results All participants completed the CPET with peak oxygen uptake(peak.V O2),and the results were within the normal range(MIS-C 89.3%±8.9%and Control 87.9%±13.7%predicted.V O2).Five post-MIS-C patients(35%)had exerciserelated cardio-respiratory abnormalities,including oxygen desaturation and oxygen-pulse fattening,compared to none in the control *** MIS-C group also had lower peak exercise saturation(95.6±3.5 vs.97.6±1.1)and lower breathing reserve(17.4%±7.5%vs.27.4%±14.0%of MVV).Conclusions Patients who recovered from MIS-C related myocarditis may present exercise *** assessment(e.g.,CPET)should be included in routine examinations before allowing a return to physical activity in post-MIS-C ***,longer term studies assessing functional capacity and focusing on physiological mechanisms are needed.

关键词： Cardiopulmonary exercise testing COVID 19 Hypoxemia Myocarditis

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Catalysts for the hydrogen evolution reaction in alkaline medium:Configuring a cooperative mechanism at the Ag-Ag_(2)S-MoS_(2) interface

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Journal of Energy Chemistry 2022年第11期31卷 481-488,I0013页

作者： Avraham bar-Hen Simon Hettler Ashwin Ramasubramaniam Raul Arenal ronen bar-Ziv Maya bar Sadan Department of Chemistry Ben-Gurion University of the NegevBeer-Sheva 8410501Israel Department of Chemistry Nuclear Research Center NegevP.O.Box 9001Beer-Sheva 84190Israel Laboratorio de Microscopías Avanzadas Universidad de Zaragoza50018 ZaragozaSpain Instituto de Nanociencia y Materiales de Aragon CSIC-U.de ZaragozaCalle Pedro Cerbuna 1250009 ZaragozaSpain Department of Mechanical and Industrial Engineering University of MassachusettsAmherstMA 01003United States ARAID Foundation 50018 ZaragozaSpain

Designing electrocatalysts for HER in alkaline conditions to overcome the sluggish kinetics associated with the additional water dissociation step is a recognized challenge in promoting the hydrogen *** this end,delicately tuning the atomic-scale structure and surface composition of nanoparticles is a common strategy and,specifically,making use of hybrid structures,can produce synergistic effects that lead to highly active ***,we present a core-shell catalyst of Ag@MoS_(2)that shows promising results towards the hydrogen evolution reaction(HER)in both 0.5 M H_(2)SO_(4)and 0.5 M *** this hybrid structure,the MoS_(2)shell is strained and defective,and charge transfer occurs between the conductive core and the shell,contributing to the electrocatalytic *** shelling process results in a large fraction of Ag_(2)S in the cores,and adjusting the relative fractions of Ag,Ag_(2)S,and MoS_(2)leads to improved catalytic activity and fast charge-transfer *** suggest that the enhancement of alkaline HER is associated with a cooperative effect of the interfaces,where the Ag(Ⅰ)sites in Ag_(2)S drive the water dissociation step,and the formed hydrogen subsequently recombines on the defective MoS_(2)*** study demonstrates the benefits of hybrid structures as functional nanomaterials and provides a scheme to activate MoS_(2)for HER in alkaline conditions.

关键词： Water splitting Core-shell Catalytic mechanism Electrocatalysis 2D materials

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Ownership Concentration and the Value Effect of Related Party Transactions （RPTs）

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Journal of Modern Accounting and Auditing 2013年第2期9卷 239-255页

作者： Yaron Amzaleg ronen barak Peres Academic Center Rehovot Israel bar-Ilan University Ramat Gan Israel

This paper investigates 218 related party transactions （RPTs） in Israel, an economy characterized by a high percentage of closely-held finns and identifies a non-linear inverted U connection between the value effect of RPT and the level of finn ownership concentration. This non-linear connection is similar to the worldwide documented quadratic （inverted U） relation between ownership concentration and a finn＇s Tobin＇s Q. The relation becomes even statistically stronger, when measuring ownership concentration using a strategic power approach, in an attempt to identify the source of this puzzling connection.

关键词： related party transaction (RPT) ownership concentration private benefits

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涡流监控复合材料固化

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洪都科技 1991年第4期 44-47页

作者： yoseph bar COHEN KENNETH H.NGUYEN RON BOTSCO 林金赐南昌飞机制造公司技术情报科

实时监控聚合物基体复合材料层板的固化过程,能够提高复合材料的质量,改善复合材料的性能。通常用几种传感技术,例如微电介质性能测量、荧光、纤维光学和超声波,提供实时信息,以保证固化过程的计算机分析。但每种方法都有一定的局限性... 详细信息

实时监控聚合物基体复合材料层板的固化过程,能够提高复合材料的质量,改善复合材料的性能。通常用几种传感技术,例如微电介质性能测量、荧光、纤维光学和超声波,提供实时信息,以保证固化过程的计算机分析。但每种方法都有一定的局限性。有一种新的力法,涡流接近传感方法。

关键词：复合材料涡流监控固化

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机器人革命

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作者： (美)约瑟夫·巴－科恩(yoseph bar-Cohen) (美)大卫·汉森(David Hanson)

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极端环境下的钻井--对地球和其他行星的穿透与取样

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国外科技新书评介 2010年第4期 12-12页

作者： yoseph bar-Cohen 赵树森不详中国科学院力学研究所

钻井技术的发展总是趋向低成本、高效率以及自动化。在某些情况下，比如在遥远的行星上钻井，由于通讯的延时，需要钻井技术的高度智能；在地球的某些地方钻井会遇到石油、岩浆以及冰层等不同温度与性质的物质材料，这些严酷的环境都要... 详细信息

钻井技术的发展总是趋向低成本、高效率以及自动化。在某些情况下，比如在遥远的行星上钻井，由于通讯的延时，需要钻井技术的高度智能；在地球的某些地方钻井会遇到石油、岩浆以及冰层等不同温度与性质的物质材料，这些严酷的环境都要求我们开拓新的钻探技术。

关键词：钻井技术极端环境行星地球取样穿透物质材料钻探技术

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Vestiges of the Cold War in Libya’s“Arab Spring”:Revisiting Libya’s Relations with the Soviet Union

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Asian Journal of Middle Eastern and Islamic Studies 2014年第2期8卷 66-95页

作者： Yehudit ronen Department of Political Studies Bar-Ilan UniversityIsrael

Although Muammar al-Qaddafi was known to fanatically adhere to a broad set of zealous principles,when threats and challenges to his political survival mounted,sporadic breaches in the country’s rigid wall of ideology in regard to Libya’s international relations appeared,evincing Qaddafi’s ability to demonstrate pragmatism when required in order to maintain his grip on *** article will explore Libya’s strategic-military alignment with the USSR and offer a retrospective analysis of one of the lesser-discussed chapters in Tripoli’s tempestuous and belligerent foreign policy during the height of the Cold war era,spanning the period of 1974-1989.

关键词： Cold War and post Cold War Arab Countries and the“Arab Spring” The Soviet Union Libya The Superpowers’Middle East Policy

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