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MR波谱成像衍生的质子密度脂肪分数检测和评估肝脏脂肪变性分级的价值优于受控衰减参数

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国际医学放射学杂志 2018年第2期 227-228页

作者： j.H.Runge l.P.Smits j.Verheij A.Depla S.D.Kuiken B.C.Baak 董龙春 Departments of Radiology and Nuclear Medicine Academic Medical Center University of Amsterdam

摘要目的前瞻性地比较瞬时弹性成像获得的受控衰减参数(CAP)与质子MR波谱成像获得的质子密度脂肪分数(PDFF)评估一可疑非酒精性脂肪肝(NAFlD)的成年病人

关键词：脂肪分数 CAP 质子密度波谱成像受控衰减参数 MR

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炭黑填充EPDM的两步硫化

橡胶参考资料 1997年第2期27卷 14-19页

作者： j.l.M.Verschuuren R.Zeeman l.VanderDoes 高桂杰

前言橡胶的力学性能与化学和物理交联密度的关系是尽人皆知的。对过氧化物或者硫黄交联的 EPDM 来说,其杨氐模量(E)随交联密度而增大(图1)。这是由表明总弹性活动网络链密度(γ_e)与杨氏模量关系

关键词：乙丙橡胶炭黑填充硫化两步硫化

18F-16α-17β-雌二醇（FES）在雌激素受体阳性乳腺癌的结合特异性

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国际医学放射学杂志 2018年第3期 342-343页

作者： K.Salem M.Kumar G.l.Powers j.j.jeffery Y.Yan A.M.Mahajan 吕晓虹 Department of Radiology Carbone Cancer Center University of Wisconsin School of Medicine and Public Health

摘要目的确定18F-16α-17β-雌二醇(FES)在雌激素受体(ER)α阳性乳腺癌细胞和肿瘤异种移植物中的结合特异性。材料与方法实验经机构动物管理与使用委员会批准。

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过氧化氢溶液中单和双金属金-银纳米粒子氧化l-亮氨酸的动力学(英文)

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催化学报 2012年第8期33卷 1306-1311页

作者： P.VENKATESAN j.SANTHANAlAKSHMI Department of Physical Chemistry University of MadrasGuindy CampusA.C.TechChennai 600 025Tamil NaduIndia

The catalytic activity of surfactant stabilized mono-and bimetallic Au and Ag nanoparticles for the oxidation of an amino acid,l-leucine,was studied using hydrogen peroxide as the *** Au and Ag nanoparticle catalysts exhibited very good catalytic activity and the kinetics of the reaction were found to be pseudo-first order with respect to the amino *** effects of several factors,such as oxidant concentration,ionic strength,pH,and catalyst concentration on the reaction,were also *** particular,optimal oxidant and catalyst concentrations were *** high concentrations of the metal nano-catalysts or the oxidant led to a dramatic increase in reaction ***,bimetallic Au-Ag catalysts provided higher selectivity than pure Au or Ag.

关键词： gold nanoparticle silver nanoparticle gold/silver bimetallic nanoparticle oxidation of α-amino acid leucine hydrogen peroxide kinetic study

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统计学

Risk of bias and reporting practices in studies comparing VO2max responses to sprint interval *** training:A systematic review and meta-analysis

作者： (美)M.R.斯皮格尔 (美)l.j.期蒂芬斯

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journal of Sport and Health Science 2022年第5期11卷 552-566页

作者： jacob T.Bonafiglia Hashim Islam Nicholas Preobrazenski Brendon j.Gurd School of Kinesiology and Health Studies Queen’s UniversityKingstonOntarioK7L 3N6Canada

Background:It remains unclear whether studies comparing _(max)imal oxygen uptake(VO_(2max))response to sprint interval training(SIT)***-intensity continuous training(MICT)are associated with a high risk of bias and poor reporting *** purpose of this study was to evaluate the risk of bias and quality of reporting in studies comparing changes in VO_(2max) between SIT and ***:We conducted a comprehensive literature search of 4 major databases:AMED,CINAHl,EMBASE,and *** were excluded if participants were not healthy adult humans or if training protocols were unsupervised,lasted less than 2 weeks,or utilized mixed exercise *** used the Cochrane Collaboration tool and the CONSORT checklist for non-pharmacological trials to evaluate the risk of bias and reporting quality,***:Twenty-eight studies with 30 comparisons(3 studies included 2 SIT groups)were included in our meta-analysis(n=360 SIT participants:body mass index(BMI)=25.9±3.7 kg/m^(2),baseline VO_(2max)=37.9±8.0 ml/kg/min;n=359 MICT participants:BMI=25.5±3.8 kg/m^(2),baseline VO_(2max)=38.3±8.0 ml/kg/min;all mean±SD).All studies had an unclear risk of bias and poor reporting ***:Although we observed a lack of superiority between SIT and MICT for improving VO_(2max)(weighted Hedge’s g=0.004,95%con-fidence interval(95%CI):-0.08 to 0.07),the overall unclear risk of bias calls the validity of this conclusion into *** studies using robust study designs are needed to interrogate the possibility that SIT and MICT result in similar changes in VO_(2max).

关键词： Bias Cardiorespiratory fitness CONSORT Moderate-intensity continuous training Sprint interval training

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氧摄取分数（OEF）评估子癎前期病人深部灰质氧代谢

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国际医学放射学杂志 2022年第6期45卷 740-741页

作者： l.F.Yang j.Cho T.Chen K.M.Gillen j.li Q.H.Zhang 刘学焕

摘要目的通过比较子前期（PE）病人、妊娠健康对照者（PHC）和非妊娠健康对照者（NPHC）深部灰质（GM）的氧摄取分数（OEF）值，探讨三者间 GM 氧代谢的差异。方法纳

关键词：

STUDY ON THERMAl FATIGUE OF NI BASE AllOY CHROMIUM CARBIDE COMPOSITE COATING

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Acta Metallurgica Sinica(English letters) 1999年第4期12卷 500-503页

作者： H.C.lin1) ,j.Y.Wang1) ,Q.Z.Yang1) ,l.j.Guo2) and D.X.lan2) 1)Departmentof Mechanical Engineering, QingDao Institute of Architecture and Engineering,Qingdao 266033,China 2)Institute of Machinery, Qingdao266000 ,China

Thermalfatiguebehaviorsof Nibased alloychromium carbidecompositecoating madeby a vacu um fusionsintering method are discussed. Resultsshowedthatthermalfatiguebehaviorisassoci ated with cyclic uppertemperature and coating thickness. Asthe thickness of coating decreases,thethermalfatigueresistanceincreases. Thethermalfatigueresistancecuts down with thether malcyclic uppertemperature rising. Thecrack growth rate decreases with theincreasein cyclicnumber untilcrackarrests. Thetractofthermalfatiguecrackcracksalongtheinterfacesof phas es. Thecompositecoating possesseshigheroxidation resistance.

关键词： compositecoating,thermalfatigue fatiguecrack

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Effect of Substrate Bias on Microstructure and Properties of Tetrahedral Amorphous Carbon Films

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Effect of Substrate Bias on Microstructure and Properties of...