Results 71 to 80 of about 71,543 (200)
Functional Characterization of AtST39 in Stress Response and AtMPA Mediating Pollen Development [PDF]
, 2012 基因芯片显示番茄细菌性叶斑病原菌Pseudomonassyringaepv.tomatoDC3000(PstDC3000)，干旱、冷和盐等逆境处理及在开花关键基因lfy突变体中都能够上调AtST39（At3g46110）基因表达；AtMPA（At1g05577）在拟南芥单核花粉粒向三核花粉发育的过程中特异性表达。但是AtST39参与胁迫和AtMPA在介导花粉发育的分子机制知之甚少。我们主要对AtST39进行了探索研究，结果如下： （1）NCBI数据库显示YWC基因家族共有185个蛋白家族成员 ...
肖世民
core
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
Zhongshan Daxue xuebao. Yixue kexue ban, 2007 【目的】基因芯片技术建立颅内动脉瘤患者血液单核细胞基因表达谱,筛选与信号传导相关的基因表达情况。【方法】50例颅内动脉瘤患者外周血,10例正常成人作为对照组,分离血液单核细胞,提取总RNA,与含22215个人类基因的Affymetrix寡核苷酸基因芯片杂交、洗脱、染色和扫描,分析检测的数据。荧光定量RT-PCR验证芯片结果。【结果】检测的22215个基因中,颅内动脉瘤共差异表达的基因有325个,差异水平均达2倍以上的基因有35个,生物信息学分析发现信号传导相关基因有7个,其中上调基因5个,下调基因2个。【
石忠松 +6 more
doaj
Effects of ApoE Isoforms Expression on Brain ApoE Lipidation and Amyloid-β Accumulation [PDF]
, 2015 在编码人三种不同apoE蛋白亚型（E2、E3和E4）的APOE等位基因（ε2、ε3和ε4）中，APOEε4等位基因是阿尔茨海默病（Alzheimer’sdisease，AD）最重要的遗传风险因子，APOEε2等位基因则具有保护作用。鉴于apoE蛋白亚型对基于调节apoE蛋白表达的AD治疗可能会有不同的影响，我们通过在人APOE基因定位替换（Targetedreplacement，TR）小鼠脑中过表达不同的人apoE亚型，研究脑中表达不同apoE亚型对apoE脂化和β-淀粉样蛋白（Amyloid-β，Aβ）
胡进
core
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
Study on establisment of chicken embryo RNAi technology with infective feature of RCAS and Vezf1 function in chicken vascular development. [PDF]
, 2012 早期初级血管网络的形成，始于胚胎中胚层形成过程中其部分细胞分化为血管内皮前体细胞。血管内皮前体细胞再进一步向血管内皮细胞分化并形成初级毛细血管网，血管内皮细胞与其周围细胞进一步相互作用，逐步进行对初级血管的改建和生成新的血管，最终完成血管系统的发育。因此，血管内皮细胞是血管生成的中心细胞。为研究胚胎血管内皮细胞分化机制，先前我们从发育至三体节的鸡内皮前体细胞（VEGFR2+）相对特异表达基因的克隆中，发现了鸡的Vezf1(cVezf1)基因。该基因与在小鼠中发现的Vezf1基因高度同源 ...
张超
core
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines multilingual practices in research interviews, focusing on English lexical insertions in Chinese‐language research interviews with teachers of Chinese in Australian secondary schools, and treating these code‐switches as analytically meaningful rather than incidental.
Chengwen Yuan, Tianwei Zhang, Gary Bonar
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2013 目的制备CS/pcDNA3.1/GDNF混悬液,并对壳聚糖作为基因载体的相关性能进行检测。方法采用复凝聚法制备CS/pcDNA3.1/GDNF混悬液,观察壳聚糖纳米粒子的物理性能,稳定性,基因结合效率,基因保护功能,缓慢释放效果及基因负载力和负载率。结果壳聚糖大小为106-228nm,性质稳定,具有良好的基因携带功能,能够有效地保护所携带基因,基因负载力及基因负载率较高。结论应用复凝聚法制得壳聚糖纳米粒子,能够满足基因载体的需要,是一个较理想的基因载体。
李世龙, 邵国喜, 刘钦毅, 周贺
doaj
The genetic differentiation and mating system of Avicennia marina populations in China [PDF]
, 2016 本研究利用SSR分子标记技术，以海南三亚河口、湛江特呈岛和泉州洛阳桥三个地区的白骨壤(Avicenniamarina)种群为研究对象，比较分析三个白骨壤种群的遗传多样性、种群之间的遗传分化和繁育系统模式(包括花粉流、异交率和种子流)。主要结果为： 1、10对核基因组SSR引物在742个个体检测到58个等位基因位点。每个引物扩增等位基因数在5-9个之间，平均5.8个。三个地区种群共出现了15个私有等位基因位点，在等位基因水平上已发现较大的分化与遗传距离。 2、湛江白骨壤种群遗传多样性水平最高 ...
侯蕊
core
International Journal of Applied Linguistics, EarlyView.ABSTRACT Studies on classroom interactions suggest that displaying affiliation through linguistic and multimodal resources could promote positive emotions like enjoyment, thereby enhancing engagement and enthusiasm in second/foreign language learning.
Karen C. K. Choi, Kevin W. H. Tai
wiley +1 more source