Results 21 to 30 of about 1,669,777 (177)
HHEX基因多态性与中国北方汉族人群精神分裂症及合并2型糖尿病发病的遗传学研究
Zhongguo shiyan zhenduanxue, 2016 目的探讨2型糖尿病易感基因HHEX与中国汉族人群2型糖尿病、精神分裂症以及精神分裂症合并2型糖尿病发病的关系。方法采用群体遗传学研究策略,以中国北方汉族人群331例精神分裂症患者、166例精神分裂症合并2型糖尿病患者、229例单纯2型糖尿病患者和389例健康对照个体为研究对象,采用TaqMan探针方法检测HHEX基因rs1111875位点基因型。结果拟合优度χ2检验分析显示rs1111875基因型频数分布在上述4个群体中均符合Hardy-Weinberg平衡定律（P>0.05 ...
赵晓霞 +7 more
doaj
Exploring English Language Learners’ Vocabulary Knowledge and Usage When Speaking
International Journal of Applied Linguistics, EarlyView.ABSTRACT Vocabulary forms a fundamental component of speaking ability, as it enables speakers to convey meaning accurately, fluently, and effectively. Although the relationship between vocabulary and speaking has been investigated to some extent, gaps remain in understanding the link between learners’ vocabulary knowledge and their speaking proficiency,
Junyan Guo, Martin East
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2015 目的调查疾病易感性相关的髓过氧化酶（MPO）、人类8-羟基鸟嘌呤糖苷酶（hOGG1）、锰超氧化物歧化酶（MnSOD）基因多态性在韩国人群中的分布状况。方法采用聚合酶链式反应-限制性片段长度多态性（PCR-RFLP）技术分别分析300名韩国健康男女大学生的MPO基因启动子区-463bp位点、hOGG1基因第7外显子第1245位碱基C/G、MnSOD基因1183位点T/C的单核苷酸多态性—M-4,计算基因型和基因频率。结果 MPO基因型频率为G/G型80.3%、G/A型19.0%、A/A型0.7 ...
卢焕俊, 洪润哲, 许青松
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT Grounded in social cognitive theory, this study investigated how high‐evidence factors jointly contribute to Chinese‐as‐a‐foreign‐language (CFL) speaking self‐efficacy. Data from 236 CFL learners in Beijing revealed a multifaceted pattern of associations.
Peijian Paul Sun +3 more
wiley +1 more source
, 2005 以原癌基因Kras基因12位密码子的4种基因型(野生型为GGT,突变型为AGT、TGT、CGT)质粒DNA为研究模型,采用SYBRGreenⅠ为实时PCR指示剂,进行ARMS实时PCR基因分型特异性的研究.结果表明:在和模板匹配的ARMS引物3′端附近引入故意错配碱基,将ARMS引物浓度稀释10倍,并对传统三步PCR循环进行改良,即根据目的产物和引物二聚体的熔点差异,在传统延伸步骤之后增加一步恒温80℃检测荧光步骤,可消除引物二聚体的影响,使ARMS引物的特异性增强,得到清晰的基因分型结果 ...
郑薇薇, 梁基选, 李庆阁
core
Zhongguo shiyan zhenduanxue, 2011 目的分析大肠埃希菌、肺炎克雷伯菌临床分离株中超广谱β内酰胺酶（ESBL）的基因型分布情况。方法用表型确证试验确定临床标本中产ESBL的大肠埃希菌和肺炎克雷伯菌分别用TEM、SHV和CTX-M通用引物进行聚合酶链反应（PCR）扩增,鉴定其基因型。结果 66%的菌株为TEM基因型,14%的菌株为SHV基因型,10%的菌株为CTX-M型。结论大肠埃希菌、肺炎克雷伯菌临床分离株中超广谱β内酰胺酶（ESBL）的基因型分布以TEM基因型为主,部分菌株为SHV、CTX-M型。同一菌株内可以产生2种不同基因型的超广谱β-
黄晶, 许建成, 安倍莹, 白岩
doaj
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
Zhongguo shiyan zhenduanxue, 2007 目的评价基因芯片技术在HBV基因型及HBVP基因YMDD变异检测中的应用价值,并对不同基因型病例的临床情况进行分析。方法抽提HBV DNA,用PCR方法扩增S基因及P基因部分区域,扩增产物与基因芯片上的寡核苷酸探针进行杂交,杂交结果通过芯片影像读取仪扫描到计算机上,经软件分析可得到HBV基因型、HBVYMDD野生型及YVDD、YIDD变异型结果;部分标本通过HBV preS/S基因序列测序证实。结果38份高病毒滴度标本（HBV DNA定量>1.0×105拷贝/毫升）中22例为B基因型（58 ...
陈伟烈 +5 more
doaj
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