Results 31 to 40 of about 29,393 (166)
Zhongguo shiyan zhenduanxue, 2010 目的探讨乙型肝炎病毒基因型分布及其对抗病毒疗效的影响。方法对183例患者进行基因分型,对应用恩替卡韦及聚乙二醇干扰素浕-2a抗病毒治疗不同基因型患者疗效进行比较。率的比较采用χ2检验。结果183例慢性乙肝患者以C基因型为主,占53.6%,其次为B基因型（35.5%）,C基因型患者HBeAg阳性率（69.4%）明显高于B基因型患者（47.7 ...
徐严, 张永贵, 季尚玮, 王江滨
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Physiological analysis on long shelf-life in ripening mutants (rin, nor, alc) tomato and their F1 [PDF]
, 1993 English abstract: Changes in respiration, ethylene production, PG activity and firmness during ripening period were monitored in fruits of the 'alcobaca', 'nor', 'rin' mutants and those of normal tomato (Lycopersicon esculentum Mill.) In fruits of ...
Lu, C, Xu, H, Zhao, Y
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Assessing differences among elasmobranch nurseries to aid conservation based on a genomics framework
Conservation Biology, EarlyView.Abstract Elasmobranch nurseries often differ in environmental conditions, demographics, and use patterns. These differences affect the distribution of genetic variation among nurseries. However, conservation and management strategies often fail to account for such differences because they are difficult to characterize.
Dominic G. Swift +8 more
wiley +1 more source
In-house human immunodeficiency virus-1 genotype resistance testing to determine highly active antiretroviral therapy resistance mutations in Hong Kong [PDF]
, 2012 Objective To determine the frequency of highly active antiretroviral therapy resistance mutations in the viral pol gene of human immunodeficiency virus-1 (HIV-1) genotypes that circulate in Hong Kong, by means of an in-house HIV-1 genotyping system ...
Chan, KKC +6 more
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Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study
International Journal of Applied Linguistics, EarlyView.ABSTRACT Artificial intelligence (AI) tools now permeate English academic writing. However, evidence on how feedback modalities align with student differences and with psychological mechanisms remains limited. Prior work often reduced learning styles to simple matches with delivery modes and treated learning engagement and writing anxiety as peripheral.
Yi Ren +3 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2010 目的探讨雌激素受体-α（ERα）基因多态性与江西地区女孩性早熟的相关性。方法应用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）分析技术,检测90例江西地区性早熟女孩和70例江西地区健康体检女孩ERα基因内含子1 Pvu Ⅱ T/C和XbaI A/G酶切位点基因多态性,并观察基因型对血清E2的影响。结果病例组ERα基因XbaⅠ基因型和等位基因频率分布与对照组相比差异有显著性 ...
柯江维 +6 more
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The study about the association of miRNA1269a SNP and the susceptibility to hepatocellular carcinoma [PDF]
, 2016 研究背景及目的： 基于早期肝癌患者缺乏特异症状和体征，而中晚期肝癌患者治疗效率又比较低并且预后较差，探讨肝癌的早期诊断与其发生机制具有重要意义。miRNA是一类由内源基因编码的长度约为22个核苷酸的非编码单链RNA分子，它们在动植物中参与转录后基因表达调控，其形成过程从长链pri-miRNAs到pre-miRNAs，最后形成成熟miRNAs，可直接结合到mRNA的3’UTR，从而抑制mRNA的翻译，导致mRNA的降解，进而影响蛋白质的表达，改变生物过程 ...
闵培
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Synthesizing Empirical Research on Learner Metacognition in Second Language Writing
International Journal of Applied Linguistics, EarlyView.ABSTRACT Despite considerable research interest in learner metacognition in second language (L2) writing, there is not yet a review that synthesizes the existing empirical findings and discusses their implications. To fill the void, this systematic review synthesized 39 empirical studies on learner metacognition in L2 writing and examined their salient
Chen Li, Icy Lee, Zhicheng Mao
wiley +1 more source
Shuitu Baochi Xuebao, 2004 在缺钾土培和水培条件下,研究了籽粒苋不同基因型根际和非根际土壤速效钾、缓效钾和全钾含量的变化,以及根际微生物数量、根系主要分泌物、根系质子分泌量和根系CEC的变化。结果表明,籽粒苋根际土壤速效钾和缓效钾含量明显高于非根际土壤,且在根际形成钾的相对富集区,富钾基因型R104和K12根际钾的富集能力明显高于一般基因型;籽粒苋根际土壤的全钾含量却低于非根际土壤,富钾基因型的降低幅度大于一般基因型。富钾基因型根际微生物数量和根系分泌能力显著高于一般基因型 ...
李廷轩 马国瑞
doaj +2 more sources
Zhongguo shiyan zhenduanxue, 2010 目的调查汉族健康人群血管紧张素转换酶（ACE）基因的单核苷酸多态性（SNP）分布与血清ACE水平的相关性。方法提取132例健康个体外周血有核细胞DNA,应用荧光标记单碱基延伸分型技术及寡核苷酸微阵列芯片杂交技术检测ACE基因的2个标签SNP（tag20SNP）rs4353和rs4305;应用单一试剂速率法检测血清ACE水平。结果汉族健康人群ACE基因rs4353多态性中AA型占23.4%,AG型占47.7%,GG型占28.9%;rs4305多态性中AA型占10.1%,AG型占49.6%,GG型占40.3%
张阳东 +4 more
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