Results 41 to 50 of about 940,388 (200)
Zhongguo shiyan zhenduanxue, 2016 目的研究天津地区丙型肝炎病毒（HCV）基因型的分布。方法收集HCV感染者的HCV基因分型、性别、年龄、临床诊断等临床资料,分析HCV基因型在人群中的分布,以及与临床资料的相关性。结果天津地区最常见的HCV基因型是1b型,占人群比例77.88%;其次是2a型,占人群比例20.07%。在肝炎患者,不同基因型感染者的平均年龄之间存在差异。在肝硬化患者,不同性别的HCV基因型分布存在差异。结论天津地区HCV基因型以1b型最为常见。
武玉晶 +4 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Many existing rubrics for L2 argumentative writing prioritize form‐based linguistic accuracy and complexity while insufficiently addressing substantive argumentative rigor and effectiveness. This limitation is further complicated by cross‐cultural variation in rhetorical conventions and educational practices, which challenge the direct ...
Zihan Xu, Peiyun Liu
wiley +1 more source
Partisanship, Deservingness, and the Attitudinal Policy Feedback Process for Social Policy
Policy Studies Journal, EarlyView.ABSTRACT In an era of identity‐based partisan polarization, we examine whether social policies can still generate positive attitudinal feedback among beneficiaries. Drawing on nationally representative survey data, we demonstrate that partisanship conditions the policy feedback process through divergent perceptions of group deservingness.
Chris Faricy, Christopher Ellis
wiley +1 more source
, 2008 利用基因表达谱数据进行肿瘤亚型分类,对于癌症研究有着非常重要的意义。由于基因表达数据的维数很高,必须从大量基因中选取一些特征基因用于分类,才能取得好的效果。但以往方法所提取的特征基因,彼此之间存在较高的相关性。本文提出了一种基于高维向量分析的特征基因提取方法:首先利用基因与理想基因间相似度作为评价准则得到候选集,然后去除候选集中相关性强的冗余基因。用此方法选出的特征基因是与分类相关但彼此无关的 ...
王守觉, 周凌飞
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Zhongguo shiyan zhenduanxue, 2010 目的探讨血管紧张素原基因（AGT）T174在人群中的分布、与临床心肌梗死的相关性。方法对入选的心肌梗死患者组及健康对照组,用聚合酶链反应（PCR）、限制性片段长度多态性（RFLP）分析,对群体患者和群体健康对照组进行基因分型,统计分析。结果 AGT基因型频率及等位基因频率分布比较均匀;心肌梗死发生与民族、性别、年龄无特异相关性。174MM型和M 174等位基因的频率患者组显著高于健康对照组,携带突变型MM基因型的个体比野生型TT者患心肌梗死的危险性高5.667倍,基因突变与心肌梗死发生相关。结论 ...
宁树成 +3 more
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Regional News, Regional Bias? Evidence From Media Discourses and Welfare Decisions in Germany
Policy Studies Journal, EarlyView.ABSTRACT How do media representations of immigrants shape their treatment by street‐level bureaucrats? Despite a uniform federal legal framework, decision‐making varies substantially across local welfare offices. Though prior research links national news reporting and policy implementation, little is known about how regional variation in news reporting
Stefanie Rueß
wiley +1 more source
Policy Studies Journal, EarlyView.ABSTRACT The examination of policy evolution has important practical implications, but current literature often only evaluates changing policy goals and instruments at the macro‐level, overlooking changes that occur at the more granular, micro‐level of policy text.
Graham Ambrose +1 more
wiley +1 more source
, 2009 以生长于田间的玉米掖单13(耐旱基因型玉米)和丹玉13(不耐旱基因型玉米)为试验材料,应用ICP对供试玉米的初生根和第一、二、三、四、五、六、七、八和第九层次生根的大量元素氮、磷、钾、钙和镁等项指标进行了测定和比较分析。结果表明:除个别根外,耐旱基因型玉米不同类型根中的全氮含量和速效氮含量极显著低于不耐旱基因型玉米根系(P0 ...
宋凤斌, 刘胜群, 王晓波
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过氧化物酶增生物-激活受体γ2基因多态性与2型糖尿病的相关性
Zhongguo shiyan zhenduanxue, 2010 目的探讨PPARγ2基因多态性与2型糖尿病的关系。方法以rs1875796为遗传标记,应用多聚酶链-限制性片段长度多态性（PCR-RFLP）技术检测250例2型糖尿病患者和337例健康对照人群PPARγ2基因型。结果 Rs1875796基因型频率CC:CT:TT在2型糖尿病和正常对照组的频率分布分别为2.8%:27.2%:70.0%和2.7%:25.5%:71.8%;C等位基因和T等位基因在2型糖尿病组和正常对照组的频率分布分别为16.4%:83.6%和15.4%:84.6%,两组间的等位基因 ...
高鹏, 吴江, 杜丹华, 张颖
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