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World Journal of Gastroenterology 2007年第31期13卷 4224-4229页

作者： Perdita Wietzke-Braun Larissa Bettina Mnhardt Albert Rosenberger Angela uy Giuliano Ramadori Sabine Mihm Department of Gastroenterology and Endocrinology Robert-Koch-Str.40 37075 Gttingen Germany Department of Genetic Epidemiology Humboldtallee 32 Gttingen 37073 Germany Department of Microbiology Kreuzbergring 57 Gttingen Georg-August-Universitt Gttingen 37075 Germany

to find correlates to spontaneous clearance of hepatitis C virus （HCV） infection, this study compared individuals with self-limited and chronic infection with regard to clinical, demographic, and serological pa- rameters. MEtHODS： Sixty-seven anti-HCV positive and repeatedly HCV RNA negative individuals were considered to have resolved HCV infection spontaneously. to determine the viral genotype these patients had been infected with HCV serotyping was performed. For comparison reasons, 62 consecutive patients with chronic hepatitis C were enrolled. Cases and controls were compared stratified for age and sex. RESULtS： Retrospective analysis showed （1） a lower humoral reactivity to HCV in patients with self-limited compared to chronic HCV-infection and （2） that younger age, history of iv drug use, and acute/post-acute hepatitis A or B co-infections, but not viral genotypes, are independent correlates for spontaneous HCV clearance. CONCLUSION： the stronger humoral reactivity to HCV in patients with persistent infections and in those with a history of iv drug use is supposed to be due to continuous or repeated contact（s） to the antigen. Metachronous hepatitis A or hepatitis B infections might favor HCV clearance.

关键词： Hepatitis C virus Hepatitis Self-limitedinfection Anti-HCV antibodies Co-infection HCVserotype

Instanton effects on the heavy-quark static potential

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Chinese Physics C 2017年第8期41卷 19-30页

作者： U.t.Yakhshiev Hyun-Chul Kim B.turimov M.M.Musakhanov Emiko Hiyama Department of Physics Inha UniversityIncheon 22212Republic of Korea RIKEN Nishina Center RIKEN2-1 Hirosawa351-0115 SaitamaJapan School of Physics Korea Institute for Advanced Study(KIAS)Seoul 02455Republic of Korea theoretical Physics Department National University of UzbekistanTashkent-174Uzbekistan

We investigate instanton effects on the heavy-quark potential, including its spin-dependent part, based on the instanton liquid model. Starting with the central potential derived from the instanton vacuum, we obtain the spin-dependent part of the heavy-quark potential. We discuss the results of the heavy-quark potential from the instanton vacuum. Finally, we solve the nonrelativistic two-body problem, associated with the heavy-quark potential from the instanton vacuum. the instanton effects on the quarkonia spectra are marginal but are required for quantitative description of the spectra.

关键词： instanton-induced interactions heavy-quark potential quarkonia

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不锈钢管混凝土短柱及细长柱的性能

钢结构(中英文) 2011年第3期 78-79页

作者： Brian uy

在轴压或压弯作用下,对不锈钢管混凝土短柱和细长柱的性能进行一系列试验研究,并与短钢管柱试验对比。结果表明:组合柱的性能很好,可广泛用作结构构件。将试验结果与传统碳素钢管混凝土柱的现有设计规范对比,如澳大利亚规范AS5100(2004)... 详细信息

在轴压或压弯作用下,对不锈钢管混凝土短柱和细长柱的性能进行一系列试验研究,并与短钢管柱试验对比。结果表明:组合柱的性能很好,可广泛用作结构构件。将试验结果与传统碳素钢管混凝土柱的现有设计规范对比,如澳大利亚规范AS5100(2004),美国规范AISC(2005),中国规范DBJ/t13-51-2010和欧洲规范Eurocode4(2004)。结果表明:这些规范在预测短柱和细长柱的承载力方面都比较保守。

关键词：钢管混凝土不锈钢短柱细长柱轴压偏心荷载强度设计

A robust new metric of phenotypic distance to estimate and compare multiple trait differences among populations

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Current Zoology 2012年第3期58卷 426-439页

作者： Rebecca SAFRAN Samuel FLAXMAN Michael KOPP Darren E. IRWIN Derek BRIGGS Matthew R. EVANS W. Chris FUNK David A. GRAY Eileen A. HEBEtS Nathalie SEDDON Elizabeth SCORDAtO Laurel B. SYMES Joseph A. tOBIAS David P. L. tOEWS J. Albert C. uy Department of Ecology and Evolutionary Biology University of Colorado Boulder CO 80309 U.S.A. Mathematics and B iosciences Group Faculty of Mathematics University of Vienna A-1090 Vienna Austria Current address Evolutionary Biology and Modeling Group Faculty of Sciences Aix-Marseille University 13331 Marseille France. Department of Zoology University of British Columbia 6270 University Boulevard Vancouver BC Canada V6T 1Z4. Research ＆ Evaluation Methodology School of Education University of Colorado Boulder CO 80309 U.S.A. School of Biological and Chemical Sciences Queen Mary University of London London E1 4NS Department of Biology Colorado State University Fort Collins CO 80523 U.S.A. Department of Biology California State University Northridge CA 91330 U.S.A. School of Biological Sciences University of Nebraska Lincoln NE 68588 U.S.A. Edward Grey Institute Department of Zoology University of Oxford Oxford OX1 3PS UK Committee on Evolutionary Biology The University of Chicago Chicago IL 60637U.S.A. Department of Biology Dartmouth College Hanover NH 03755 U.S.A. Department of Biology University of Miami Coral Gables FL 33146 U.S.A.

Whereas a rich literature exists for estimating population genetic divergence, metrics of phenotypic trait divergence are lacking, particularly for comparing multiple traits among three or more populations. Here, we review and analyze via simula- tion Hedges＇ g, a widely used parametric estimate of effect size. Our analyses indicate that g is sensitive to a combination of unequal trait variances and unequal sample sizes among populations and to changes in the scale of measurement. We then go on to derive and explain a new, non-parametric distance measure, ＇Aft＇, which is caiculated based upon a joint cumulative distribution function （CDF） from all populations under study. More precisely, distances are measured in terms of the percentiles in this CDF at which each population＇s median lies. Ap combines many desirable features of other distance metrics into a single metric; namely, compared to other metrics, p is relatively insensitive to unequal variances and sample sizes among the populations sam- pied. Furthermore, a key feature of Ap--and our main motivation for developing it--is that it easily accommodates simultaneous comparisons of any number of traits across any number of populations. to exemplify its utility, we employ Ap to address a ques- tion related to the role of sexual selection in speciation： are sexual signals more divergent than ecological traits in closely related taxa？ Using traits of known function in closely related populations, we show that traits predictive of reproductive performance are indeed, more divergent and more sexually dimorphic than traits related to ecological adaptation [Current Zoology 58 （3）： 426-439 2012].

关键词： Effect size Phenotype divergence Sexual dimorphism Sexual selection Speciation

偏心荷载作用下高强钢管混凝土圆柱的性能研究

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钢结构(中英文) 2011年第1期 86-87页

作者： Seong-Hui Lee Brian uy Sun-Hee Kim Young-Hwan Choi Sung-Mo Choi

对11个钢管混凝土圆柱试件进行试验和有限元分析,研究偏心荷载作用下钢管混凝土圆柱的性能。钢材强度fy>450MPa;混凝土强度fck=31.5,59MPa;径厚比D/t=25,40,60,80,100;偏心e=0,0.167D,0.5D。将试验和有限元分析结果与AISC(2005)《美国... 详细信息

对11个钢管混凝土圆柱试件进行试验和有限元分析,研究偏心荷载作用下钢管混凝土圆柱的性能。钢材强度fy>450MPa;混凝土强度fck=31.5,59MPa;径厚比D/t=25,40,60,80,100;偏心e=0,0.167D,0.5D。将试验和有限元分析结果与AISC(2005)《美国钢结构协会标准》,Eurocode4(1994)《欧洲规范4》及KBCS(2009)《韩国建筑规范》进行对比,验证各规范的适用范围。结果表明:AISC和KBCS与分析结果较吻合,Eurocode4高估了荷载-弯矩关系。

关键词：薄壁钢管混凝土圆柱径厚比局部屈曲有限元分析荷载-弯矩关系

使用神经周围和硬膜外冲洗法进行神经保护的Ct引导下脊柱骨样骨瘤射频消融

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国际医学放射学杂志 2009年第6期 597-597页

作者： D.Klass t.Marshall A.toms 李志伟 Radiology Academy Cotman CentreNorfolk and Norwich University HospitalColney LaneNorwichNR 4 7UYUK

本研究报道了在进行Ct引导下脊柱骨样骨瘤频消融时神经保护的一些经验。7例超过9岁的病人在引导下进行了8次骨样骨瘤的射频消融治疗。Ct引导下射频消融在常规麻醉下进行。使用一个Cosman SMK tCRF电极,将病变加热至90℃2min,2个周期。将

关键词：脊柱骨样骨瘤射频消融神经保护 Ct 硬膜外