Results 91 to 100 of about 26,437 (250)

Metadiscourse and Teacher Moves for Supporting Student Reasoning in Linguistics Classroom Interactions

International Journal of Applied Linguistics, EarlyView.
ABSTRACT This paper examines the features of metadiscourse across different teacher moves in university linguistics classroom discourse and the teaching strategies reflected in its use. The results reveal that teachers employ diverse metadiscourse during classroom interactions to support student reasoning.
Jingjie Li, Wenjie Hu
wiley   +1 more source

Survivin基因启动子区-31C/G多态性与散发性 结直肠癌遗传易感性的关系

Zhongshan Daxue xuebao. Yixue kexue ban, 2010
【目的】 探讨生存素Survivin基因启动子区-31C/G单核苷酸多态性与中国华南地区散发性结直肠癌(CRC)遗传易感性的关系65377; 【方法】 采用聚合酶链反应-限制性片段长度多态性法(PCR-RFLP)检测华南地区711例健康人和702例CRC的Survivin基因-31C/G位点单核苷酸多态性65377;【结果】 结直肠癌患者CC基因型的频率明显高于对照人群(36.35% vs.
doaj  

黑龙江省完达山东部林区马鹿微卫星位点的筛选

野生动物学报, 2010
利用黑尾鹿、白尾鹿等近缘物种的18对微卫星引物,对2个东北马鹿肌肉DNA样品和176个粪便DNA样品进行扩增,通过毛细管电泳法筛选适合东北马鹿的微卫星位点。结果表明,其中3个位点为高度多态性位点（PIC>0.5）,1个为中度多态性位点（0.5>PIC>0.25）。共检测到26个等位基因片段,平均每个位点6.5个等位基因。多态信息含量0.393～0.827,个体识别率0.643～0.958,累积个体识别率为0.9999,累积非父排除率为0.9976。这4个多态性微卫星位点为东北马鹿的遗传研究提供了理论依据。
张辉, 张明海, 罗理扬
doaj  

Examining the Impact of Digital Linguistic Landscapes on Students’ motivation, and Self‐Perceived Achievement in Second Language Writing

International Journal of Applied Linguistics, EarlyView.
ABSTRACT Given the importance of the linguistic landscape in language learning, the digital linguistic landscape (DLL) has emerged as an important multimodal input resource. However, few studies have been conducted to explore the antecedent and predictive effect of the DDL on L2 writing. To address this gap, the study attempted to conceptualize the DLL
Zi Yang, Lawrence Jun Zhang
wiley   +1 more source

应用基质辅助激光解吸电离飞行时间质谱技术检测载脂蛋白 E 基因多态性

Zhongshan Daxue xuebao. Yixue kexue ban, 2004
【目的】应用基质辅助激光解吸电离飞行时间质谱技术检测人类载脂蛋白E(apoE)基因的多态性。【方法】用PCR扩增出含apoE两个单核苷酸多态性(SNPs)位点(334T/C和472C/T)的DNA片段作为模板,经延伸反应,产物纯化后利用MALDI-TOFMS进行检测。从而确定样本apoE基因型。【结果】应用本技术对50例广东地区无关个体进行apoE基因多态性检测,共检出3种常见的apoE基因型,其中以apoEΣ3/3型最多,占总数的74.00%;等位基因频率分布以ε3(87.00%)最高。【结论 ...
doaj  

Attainment Pairing Effects on Cognitive Conflict in Technology‐enhanced EFL Cooperative Tasks

International Journal of Applied Linguistics, EarlyView.
ABSTRACT This study examines how attainment pairing (high‐high versus high‐low versus low‐low attainment) impacts English as a Foreign Language (EFL) learner engagement during technology‐enhanced cooperative writing tasks. Seventy‐eight Chinese university learners formed 39 dyads (13 pairs per group) via Tencent Meeting.
Ying Liu, Allen Thurston
wiley   +1 more source

亚甲基四氢叶酸还原酶基因多态性和结直肠癌对ＦＯＬＦＯＸ６方案化疗反应的相关性

Zhongshan Daxue xuebao. Yixue kexue ban, 2016
【目的】 分析结直肠癌患者亚甲基四氢叶酸还原酶（ＭＴＨＦＲ）基因Ｃ６７７Ｔ多态性与ＦＯＬＦＯＸ６方案化疗疗效和毒性的相关性。【方法】 收集经病理学确诊的ＩＩＩ－ＩＶ期结直肠腺癌患者９２例。所有患者均接受ＦＯＬＦＯＸ６方案化疗，化疗前抽取患者外周血，提取ＤＮＡ，采用ＤＮＡ测序的方法检测ＭＴＨＦＲ基因Ｃ６７７Ｔ多态性，并分析其与化疗方案疗效及毒性的相关性。【结果】 ９２例结直肠癌患者中，ＭＴＨＦＲ Ｃ６７７Ｔ ＣＣ、ＣＴ、ＴＴ基因型频率分别为：５５．４％、４０．２％、４．３ ...
doaj  

生物多样性保护的基础工作——生物编目

野生动物学报, 2000
生物编目（biological inventory）主要是调查和收集物种、生态系统以及遗传资源的信息,并建立数据库。数据库能够提供生物多样性和生物资源管理所必需的数据,利用这些数据可以建立生物多样性信息系统,信息系统的目的主要在于利用系统中各种数据库建立有关生物多样性监测和评估模型、生物多样性空间分布及其形成机制模型、关键物种长期种群动态模型 ...
汪松, 解焱
doaj  

Creativity Screening of Product Innovation Based on Meta-synthesis Methodology [PDF]

, 2016
科学技术的迅猛发展、网络化以及经济全球化时代的到来，使得产品创新成为企业在激烈的国际环境中竞争的重要手段。从企业生产经营的流程来看，相对于生产和营销阶段，新产品开发中从创意产生到具体的创新方案提出的产品创新阶段，还没有实现科学化、工程化的管理和信息系统的支持。因此，单独对此阶段进行研究十分必要。本文将产品创新分为了产品需求、产品创意、产品设计、产品论证和产品评估阶段。并提出在对各阶段的复杂性进行分析的基础上，利用综合集成方法理论，根据各阶段需求和目标的不同，有针对性地提出解决方法 ...
廖容
core  

Plant functional trait dissimilarity drives plant mixture effects on fine root biomass and trait variations

New Phytologist, EarlyView.
Summary Fine roots are critical for soil resource uptake, yet how declining plant diversity alters fine root biomass (RB) and traits remains unclear. We tested how plant functional trait dissimilarity in shade tolerance, drought tolerance, growth rate, and nitrogen‐fixation ability drives variation in root attributes.
Sai Peng, Yakun Zhang, Han Y. H. Chen
wiley   +1 more source