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超声表现疑似阑尾炎时临床资料的预测价值

国际医学放射学杂志 2016年第5期 576-576页

作者： B.S.Athans *** a.j.towbin Y.Zhang B.Zhang A.T.Trout 任蕾 Department of Radiology Cincinnati Children’s Hospital Medical Center

摘要目的确定超声(US)检查疑似急性阑尾炎时,临床资料改善诊断的价值。材料与方法本实验经伦理委员会批准并免除知情同意。分析年龄小于18岁的急性阑尾炎病人的临床和影像资料。US检查采用结构化报告模式描述,包括2个疑似诊断。根据小... 详细信息

摘要目的确定超声(US)检查疑似急性阑尾炎时,临床资料改善诊断的价值。材料与方法本实验经伦理委员会批准并免除知情同意。分析年龄小于18岁的急性阑尾炎病人的临床和影像资料。US检查采用结构化报告模式描述,包括2个疑似诊断。根据小儿阑尾炎(PAS)或Alvarado评分采集临床资料,并分类(高、中、低度阑尾炎可能),将超声疑似诊

关键词：阑尾炎 US 超声病人肠疾病连续变量连续性变数临床资料

阑尾直径作为儿童阑尾炎的一种预测指标:提高了由logistics预测模型衍生而来的三分类法的诊断率

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国际医学放射学杂志 2015年第5期 501-501页

作者： A.T.Trout a.j.towbin S.R.Fierke B.Zhang D.B.Larson 李伟 Cincinnati Children ’s Hospital Medical Center

摘要目的开发和评估针对儿科阑尾炎超声诊断的基于直径的logistic预测模型以及由此衍生的三分类法的效能。方法阑尾直径引自儿童及青少年超声检查报告。数值用以产生一个logistics预测模型以定义阴性、可疑以及阳性共3种分类。衍生而来... 详细信息

摘要目的开发和评估针对儿科阑尾炎超声诊断的基于直径的logistic预测模型以及由此衍生的三分类法的效能。方法阑尾直径引自儿童及青少年超声检查报告。数值用以产生一个logistics预测模型以定义阴性、可疑以及阳性共3种分类。衍生而来的三分类法的诊断效能与假定的二分类法对比。结果 641例阑尾超声报告回顾评审有181例诊断为

关键词：阑尾阑尾炎超声肠疾病情报检索分类法数学模型预测模型 logistics

Error field penetration in j-TEXT tokamak based on two-fluid drift-MHD model

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Chinese Physics B 2024年第4期33卷 545-551页

作者：王文徐涛张仪 the j-TEXT team State Key Laboratory of Advanced Electromagnetic Technology International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma PhysicsSchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

An externally generated resonant magnetic perturbation can induce complex non-ideal MHD responses in their resonant *** have studied the plasma responses using Fitzpatrick's improved two-fluid model and program *** calculated the error field penetration threshold for *** addition,we find that the island width increases slightly as the error field amplitude increases when the error field amplitude is below the critical penetration ***,the island width suddenly jumps to a large value because the shielding effect of the plasma against the error field disappears after the *** scanning the natural mode frequency,we find that the shielding effect of the plasma decreases as the natural mode frequency ***,we obtain the m/n=2/1 penetration threshold scaling on density and temperature.

关键词： plasma responses drift-MHD model error field penetration

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儿童胸部CT诊断参考值范围:进展与应用

国际医学放射学杂志 2017年第5期 591-591页

作者： K.j.Strauss M.j.Goske a.j.towbin D.Sengupta M.j.Callahan K.Darge 王佳红 Department of Radiology Cincinnati Children’s Hospital Medical Center

摘要目的基于儿科病人胸部的大小来确定诊断参考值范围,并开发基于患儿体型大小和各CT设备射线输出计算的CT设备特异性平均体型特异性剂量评估(SSDE)。材料

关键词：参考值减低因子剂量指数 CT

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儿童腹部CT辐射剂量的参考范围

国际医学放射学杂志 2013年第5期 474-474页

作者： M.j.Goske K.j.Strauss L.P.Coombs K.E.Mandel a.j.towbin D.B.Larson 王俊丽 Department of Radiology Cincinnati Children’s Hospital Medical Center

摘要目的建立获得满足诊断需求的影像所需辐射剂量的参考范围(DRR),开发基于体宽(BW)计算儿童腹部或腹盆腔CT扫描剂量的个体化方法。材料与方法本研究为多中心回顾性研究,符合HIPAA规定,经各参与机构伦理审查委员会的批准而且豁免受检... 详细信息

摘要目的建立获得满足诊断需求的影像所需辐射剂量的参考范围(DRR),开发基于体宽(BW)计算儿童腹部或腹盆腔CT扫描剂量的个体化方法。材料与方法本研究为多中心回顾性研究,符合HIPAA规定,经各参与机构伦理审查委员会的批准而且豁免受检者的知情同意。回顾性分析了2009年9月1日—12月1日期间939例(男499例,53%;女440例,47%;平均年龄10岁)儿科病人的954次CT扫描,记录扫描剂量。数据来源于美国放射学会放射学注册数据中的儿童CT扫描质量改进注册数据库。分析体型特异性

关键词：辐射剂量参考范围儿童 CT 腹部躯干

Storing Freshwater Versus Storing Electricity in Power Systems with High Freshwater Electric Demand

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journal of Modern Power Systems and Clean Energy 2024年第2期12卷 323-333页

作者： Mubarak j.Al-Mubarak Antonio j.Conejo Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOHUSA Department of Electrical Engineering Kuwait UniversityP.O.Box 5969Safat 13060Kuwait Department of Integrated Systems Engineering and the Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOH 43210USA IEEE

We consider a power system whose electric demand pertaining to freshwater production is high(high freshwater electric demand),as in the Middle East,and investigate the tradeoff of storing freshwater in tanks versus storing electricity in batteries at the day-ahead operation *** storing freshwater and storing electricity increase the actual electric demand at valley hours and decrease it at peak hours,which is generally beneficial in term of cost and ***,to what extent?We analyze this question considering three power systems with different generation-mix configurations,i.e.,a thermal-dominated mix,a renewable-dominated one,and a fully renewable *** generation-mix configurations are inspired by how power systems may evolve in different countries in the Middle *** production uncertainty is compactly modeled using chance *** draw conclusions on how both storage facilities(freshwater and electricity)complement each other to render an optimal operation of the power system.

关键词： Power system operation freshwater production and transportation coordination day-ahead scheduling

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Analysis of ancient mass extinction recoveries in marine environments: generating strategies for managing outcomes of the current mass extinction

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National Science Review 2024年第1期11卷 8-10页

作者： David j.Bottjer Department of Earth Sciences University of Southern California

The defining feature of a mass extinction and its associated recovery is the global amount of extinction that occurred[1]. However, there is finer-scale detail to the story, as seen in the ongoing modern mass extinction(the sixth mass extinction), which exhibits variable effects among marine ecosystems and environments, and hence geographic areas [1].

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Global weirding at mass extinction horizons

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National Science Review 2024年第1期11卷 10-12页

作者： Gregory j.Retallack Department of Earth Sciences University of Oregon

A strong motivation for studying mass extinctions is understanding how current climatic and biodiversity crises will affect creatures living on land such as ourselves. Perhaps the question is: how bad can it get? In that case, terrestrial Permian-Triassic mass extinctions are an irresistible worst-case scenario [1].

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Decoding the genetic program of micronucleus formation: linking chromosomal instability to human disease

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Signal Transduction and Targeted Therapy 2024年第7期9卷 2840-2842页

作者： jörg Fahrer Division of Food Chemistry and Toxicology Department of ChemistryRPTU Kaiserslautern-Landau67663 KaiserslauternGermany

A recent study by Adams and colleagues published in Nature unveiled more than one hundred genes that are involved in micronucleus formation,1 which is a biomarker for genomic instability and associated with aging,cancer,and other disorders.2 As an outstanding achievement,the authors identified DSCC1(DNA Replication And Sister Chromatid Cohesion 1)as a critical gene protecting against early developmental defects,genomic instability,reduced proliferative capacity,cohesinopathy-related phenotypes,and tumor development in vivo.

关键词： chromosomal linking Replication