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Current systematic reviews and meta-analyses of COVID-19

World Journal of Virology 2021年第4期10卷 182-208页

作者： Mahmoud Nassar Nso Nso Mostafa Alfishawy Anastasia Novikov salim Yaghi Luis Medina Bahtiyar Toz Sofia Lakhdar Zarwa Idrees Yungmin Kim Dawa Ongyal Gurung Raheel S Siddiqui David Zheng Mariam Agladze Vikram Sumbly Jasmine sandhu Francisco Cuevas Castillo Nadya Chowdhury Ravali Kondaveeti sakil Bhuiyan Laura Guzman Perez riki Ranat Carlos Gonzalez Harangad Bhangoo John Williams Alaa Eldin Osman Joyce Kong Jonathan Ariyaratnam Mahmoud Mohamed Ismail Omran Mariely Lopez Akwe Nyabera Ian Landry saba Iqbal Anoosh Zafar Gondal sameen Hassan Ahmed Daoud Bahaaeldin Baraka Theo Trandafirescu Vincent Rizzo Department of Internal Medicine Icahn School of Medicine at Mount Sinai/NYC H&H QueensNew YorkNY 11432United States Department of Infectious Diseases Infectious Diseases Consultants and Academic Researchers of Egypt(IDCARE)Cairo 11221Outside of the USEgypt Department of Medicine Division of NephrologyUniversity of Tennessee Health Science CenterKnoxville CityTN 38103United States Department of Medical St.George's UniversityWest Indies 38901Grenada Department of Internal Medicine Faculty of MedicineCairo UniversityCairo 11221Egypt Department of Oncology Broomfiled HospitalMid and South Essex NHS Foundation TrustESSEXChelmsford 12422United Kingdom Department of Critical Care Unit Icahn School of Medicine at Mount Sinai/NYC H&H QueensNew YorkNY 11432United States

BACKGROUND Coronavirus disease 2019(COVID-19)has left a significant impact on the world's health,economic and political systems;as of November 20,2020,more than 57 million people have been infected worldwide,with over 1.3 million *** the global spotlight is currently focused on combating this pandemic through means ranging from finding a treatment among existing therapeutic agents to inventing a vaccine that can aid in halting the further loss of *** To collect all systematic reviews and meta-analyses published related to COVID-19 to better identify available evidence,highlight gaps in knowledge,and elucidate further meta-analyses and umbrella reviews that are yet to be *** We explored studies based on systematic reviews and meta-analyses with the keyterms,including severe acute respiratory syndrome(saRS),saRS virus,coronavirus disease,COVID-19,and saRS *** included studies were extracted from Embase,Medline,and Cochrane *** publication timeframe of included studies ranged between January 01,2020,to October 30,*** that were published in languages other than English were not considered for this systematic *** finalized full-text articles are freely accessible in the public *** Searching Embase,Medline,and Cochrane databases resulted in 1906,669,and 19 results,respectively,that comprised 2594 studies.515 duplicates were subsequently removed,leaving 2079 *** inclusion criteria were systematic reviews or meta-analyses.860 results were excluded for being a review article,scope review,rapid review,panel review,or guideline that produced a total of 1219 *** screening articles were categorized,the included articles were put into main groups of clinical presentation,epi-demiology,screening and diagnosis,severity assessment,special populations,and ***,there was a second subclassification into the following groups:gastrointestinal,cardiovascular,neurological,stro

关键词： Systematic review Meta-analyses COVID-19 Review Coronavirinae

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加速器质谱测量^(129)Ⅰ方法的改进

引用

核电子学与探测技术 2007年第4期27卷 740-744页

作者：周本胡長島泰夫姜山吴伟明管永精武绍勇何明袁坚阮向东関李紀笹公和高橋努崎裕貴松四雄騎玉理美智子末木啓介广西大学物理科学与工程技术学院筑波大学应用加速器部中国原子能科学研究院北京102413

在筑波大学的12UD串列加速器上开发了一套改进的129Ⅰ加速器质谱(AMS)测量方法,包括在120°磁铁后安装了一副自行设计制作有静电偏转板,有效改善了对127Ⅰ束流和129Ⅰ计数的测量;采用97MoO2分子导航束稳定加速器端电压,加速器的端电压... 详细信息

在筑波大学的12UD串列加速器上开发了一套改进的129Ⅰ加速器质谱(AMS)测量方法,包括在120°磁铁后安装了一副自行设计制作有静电偏转板,有效改善了对127Ⅰ束流和129Ⅰ计数的测量;采用97MoO2分子导航束稳定加速器端电压,加速器的端电压能稳定在几天内不超过0.1%,结合二次剥离,取得了满意的测量效果。用该方法测得AgI试剂样品的本底水平为7.83×10-13。对129Ⅰ/127Ⅰ比值范围为(4.92~0.28)×10-10的一系列样品的测量不确定度在7%以下,准确度较前有所提高。

关键词：加速器质谱 129I测量静电偏转板二次剥离

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