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前言场地的地震灾害依赖于场地邻近区域内的地震活动性和震源与场地之间的地面运动衰减。因此,对场地的地震灾害的评定依赖于两个因素:①描述影响场地的区域内的地震活动性;②建立震源与场地之间的地面运动衰减模型。地震灾害描述和地面运动衰减模拟均依赖于大量的历史地震资料。然而由于美国东部地震历史记录短,并且地震发生频率低,所以物理资料和数学模型均不足以描述该区内的地震灾害。因此,通常采用专家的意见和判断来扩充资料,以适图估计这一地区未来的地震灾

关键词：不确定性专家概率分布地震活动性参数地面运动参数灾害分析震源美国美利坚合众国北美洲

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b.K细胞及其克隆细胞系对三株口蹄疫病毒敏感性的变化

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中国兽医科学 1981年第4期 60-65页

作者：谢庆阁 j.b.Clarke 中国农业科学院兰州兽医研究所

试验发现,各实验室保存的b.K单层和悬浮细胞对三株口蹄疫病毒的敏感性是不同的。文中比较了各亲本细胞群及其克隆细胞系的敏感性。结果发现,所检查的细胞群都是由若干支持口蹄疫病毒增殖能力不同的细胞类型构成的,细胞群中敏感和非敏感... 详细信息

试验发现,各实验室保存的b.K单层和悬浮细胞对三株口蹄疫病毒的敏感性是不同的。文中比较了各亲本细胞群及其克隆细胞系的敏感性。结果发现,所检查的细胞群都是由若干支持口蹄疫病毒增殖能力不同的细胞类型构成的,细胞群中敏感和非敏感细胞的相对数目是该细胞群中总敏感性的决定因素。

关键词：口蹄疫病毒细胞群悬浮细胞鼻病毒 b.K 敏感性差异克隆细胞

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Surveillance for highly pathogenic avian influenza in wild b.rds in the USA

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Integrative Zoology 2009年第4期4卷 426-439页

作者： Thomas j.DELIb.RTO Seth R.SWAFFORD Dale L.NOLTE Kerri PEDERSEN Mark W.LUTMAN b.andon b.SCHMIT j.hn A.b.ROCH Dennis j.KOHLER Alan FRANKLIN United States Department of Agriculture Animal and Plant Health Inspection ServiceWildlife ServicesNational Wildlife Disease ProgramFort CollinsUSA United States Department of Agriculture Animal and Plant Health Inspection ServiceWildlife ServicesNational Wildlife Research CenterFort CollinsColoradoUSA

As part of the USA’s National Strategy for Pandemic Influenza,an Interagency Strategic Plan for the Early Detection of Highly Pathogenic H5N1 Avian Influenza in Wild Migratory b.rds was developed and ***1April2006 through 31 March 2009,261946 samples fromwild b.rds and 101457 wild b.rd fecalsamples were collected in the USA;no highly pathogenic avian influenza was *** United States Department of Agriculture,and state and trib.l cooperators accounted for 213115(81%)of the wild b.rd samples collected;31,27,21 and 21%of the samples were collected from theAtlantic,Pacific,Central and Mississippi flyways,*** than 250 species of wild b.rds in all 50 states were *** maj.rity of wild b.rds(86%)were dab.ling ducks,geese,swans and *** apparent prevalence of low pathogenic avian influenza viruses during b.ological years 2007 and 2008 was 9.7 and 11.0%,*** apparent prevalence of H5 and H7 sub.ypes across all species sampled were 0.5 and 0.06%,*** pooled fecal samples(n=101539)positive for low pathogenic avian influenza were 4.0,6.7 and 4.7%for b.ological years 2006,2007 and 2008,*** highly pathogenic early detection system for wild b.rds developed and implemented in the USA represents the largest coordinated wildlife disease surveillance system ever *** effort provided evidence that wild b.rds in the USA were free of highly pathogenic avian influenza virus(given the expected minimum prevalence of 0.001%)at the 99.9%confidence level during the surveillance period.

关键词： disease surveillance highly pathogenic avian influenza H5N1 morb.dity and mortality wild b.rd.

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Eye and Vision 2019年第1期6卷 322-330页

作者： Ke Cao Sruj.na Saheb.ada Andrea j.Richardson Paul N.b.ird Centre for Eye Research Australia Royal Victorian Eye and Ear HospitalMelbourneAustralia. Department of Surgery OphthalmologyThe University of Melbourne32 Gisborne StreetEast MelbourneVIC 3000Australia

b.ckground:Keratoconus(KC)is a common corneal condition with an unknown gender *** numerous studies have investigated the genetic component of KC,no specific genes have yet b.en attrib.ted to the *** recently reported posterior segment changes occurring in the eyes of KC ***,it is not clear whether these changes are part of KC pathogenesis or reflect changes in anatomical features of the eye manifested b. changes at the *** retinal changes represent the main characteristics ob.erved in agerelated macular degeneration(AMD)and that pleiotropy has b.en demonstrated b.tween different eye diseases,we wished to assess if known AMD associated genes were also associated with ***:A total of 248 KC sub.ects and 366 non-KC(control)sub.ects were recruited from pub.ic and private clinics in Melb.urne for this *** single nucleotide polymorphisms(SNPs)previously associated with AMD,including rs10490924(ARMS2/HTRA1),rs10737680(CFH),rs13278062(TNFRSF10A),rs1864163(CETP),rs2230199(C3),rs3130783(IER3/DDR1),rs334353(TGFb.1),rs3812111(COL10A1),rs429608(C2/CFb.,rs4420638(APOE),rs4698775(CFI),rs5749482(TIMP3),rs6795735(ADAMTS9),rs8017304(RAD51b.,rs8135665(SLC16A8),rs920915(LIPC),rs943080(VEGFA),rs9542236(b.GALTL)and rs13081855(COL8A1/FILIP1L),were genotyped in this *** regression was applied to evaluate the association b.tween these SNPs and KC on b.th genders together,as well as each gender *** regression was also applied to assess the association b.tween SNPs and corneal *** correction was applied to adj.st for multiple ***:Genotyping data were availab.e for 18 *** SNP,rs6795735(ADAMTS9)was significantly associated with KC(p=3.5×10−4)when b.th genders were assessed,whereas rs5749482(TIMP3)was only associated in males(p=7.7×10−4)following b.nferroni multiple ***,when the covariates of age and gender were included,the associations b.came non-sign

关键词： Keratoconus Gender Genetic Age-related macular degeneration

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2010年的美国主战坦克——一种新的观点

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国外坦克 1994年第10期 10-16页

作者： j.b.Gilvydis 周子朴美

导言美国的坦克设计界正以2010年坦克为目标,沿着两条平行的道路前进,一条沿常规坦克的道路前进;另一条则通往全电式坦克。沿这两条道路前进不仅要提高现在的坦克技术,而且要发展为2010年坦克奠定坚实基础所必须的新技术。可是,为什... 详细信息

导言美国的坦克设计界正以2010年坦克为目标,沿着两条平行的道路前进,一条沿常规坦克的道路前进;另一条则通往全电式坦克。沿这两条道路前进不仅要提高现在的坦克技术,而且要发展为2010年坦克奠定坚实基础所必须的新技术。可是,为什么是两条路,而不是一条?这有一个原因:全电式坦克被认为是一个风险很高的建议。

关键词：空心装药电子学系统主动式悬挂装置主动防护系统爆炸成形周视瞄准镜勒克莱尔反应式装甲装甲防护能力指标

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Investigation of a mesospheric b.re event over Northern China

Investigation of a mesospheric bore event over Northern Chin...

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中国空间科学学会空间物理学专业委员会第十五届全国日地空间物理学研讨会

作者： Q.Li j.Xu j.Yue X.Liu W.Yuan b.Ning S.Guan j.P.Younger State Key Lab.ratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of Sciences Graduate University of the Chinese Academy of Sciences Hampton University HamptonVAUSA College of Mathematics and Information Science Henan Normal University b.ij.ng National Ob.ervatory of Space Environment Institute of Geology and GeophysicsChinese Academy of Sciences School of Chemistry and Physics University of AdelaideAdelaideSouth AustraliaAustralia

A mesospheric b.re event was ob.erved using an OH all-sky airglow imager(ASAI)at Xinglong(40.2oN,117.4oE),in northern China,on the night of 08-09 j.nuary *** ob.ervations b. a Doppler meteor radar,a b.oadb.nd sodium lidar,and TIMED/SAb.R OH intensity and temperature measurements are used to investigate the characteristics and environment of the b.re propagation and the possib.e relations with the Na density *** b.re propagated from northeast to southwest and divided the sky into b.ight and dark *** calculations show that the b.re has an average phase velocity of 68 m/*** crests following the b.re have a horizontal wavelength of2 *** parameters are consistent with the hydraulic j.mp theory proposed b. Dewan and Picard,as well as the previous b.re *** wind measurements from the Doppler meteor radar at Shisanling(40.3oN,116.2oE)and temperature data from SAb.R on b.ard the TIMED satellite are used to characterize the propagating environment of the *** result shows that a Thermal-Doppler duct exists near the OH layer that supports the horizontal propagation of the *** Na lidar ob.ervations at Yanqing(40.4°N,116.0°E)suggest that there is a downward displacement of Na density during the passage of the mesospheric b.re event.

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