Results 41 to 50 of about 11,427 (167)
Studies on the role of PGE2 in the reproduction of Small Abalone，Haliotis diversicolor [PDF]
, 2016 杂色鲍（Haliotisdiversicolor），又称九孔鲍，是我国福建南部和广东等沿海地区鲍养殖的重要品种，商业价值较高，杂色鲍繁殖调控对于其人工育苗和育种都有重要意义，但目前有关鲍的繁殖分子机制研究却十分有限，尤其是对鲍的产卵和排精机制了解更少。本文通过组织学、分子生物学和生物化学方法对杂色鲍的前列腺素E2（PGE2）、PGE2合成相关的三种酶基因和EP4受体进行了研究，并结合生态实验讨论了PGE2在杂色鲍繁殖中的作用。主要结果如下： 1.PGE2在杂色鲍繁殖中功能研究 ...
李玲玲
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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
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Impacts and mechanisms of Slit2 on the proliferation, invasion and metastasis of Hepatocellular Carcinoma Cells [PDF]
, 2016 不同神经导向分子之间的相互协调作用是神经系统发育过程中的普遍特性，这种协调作用保证了神经轴突按照指定路径生长到达其靶细胞。Slit2/Robo1和Netrin1/DCC在神经系统的发育过程中发挥了重要作用，Slit2/Robo1对背神经轴突的迁移起到排斥的作用，而Netrin1/DCC则对背神经轴突的迁移起到吸引的作用，二者相互协调确保了神经轴突的正确定位。许多神经导向因子在神经系统外也发挥重要作用，其中以参与对血管与淋巴管系统发育的调节和影响肿瘤的发展与转移方面最为引人注目 ...
王晶晶
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Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
New Phytologist, EarlyView.Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
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Genetic mapping and quantitative trait loci analysis of growth-related traits in the small abalone Haliotis diversicolor using next-generation sequencing [PDF]
, 2016 杂色鲍(Haliotisdiversicolor)广泛分布于韩国、日本、中国、越南和菲利宾沿岸，是一种具有重要经济价值的养殖鲍种。应用传统的育种方式，杂色鲍育种工作虽然已经取得了一定进展，但是开展分子标记辅助选育仍然是加速该进程的必然选择。下一代测序技术可以高通量、低成本地完成SNP标记的发掘与分型，目前已被广泛应用于遗传研究的各个方面。本文利用下一代测序技术完成了杂色鲍的SNP标记开发与验证、高密度连锁图谱构建、QTL定位和候选基因的关联分析等工作。主要结果如下： (1) 杂色鲍高密度连锁图谱的构建 ...
任鹏
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Journal of Linguistic Anthropology, Volume 36, Issue 1, May 2026.Abstract Native speakerism in English language teaching (ELT) has become associated with Whiteness. However, how this association is sustained in everyday practices within China's unique socio‐cultural‐political context remains underexplored. This study examines the raciolinguistic construct of Mubai, a central recruitment criterion in China's ELT ...
Shuling Wang, Raviv Litman
wiley +1 more source
The impacts of coastal defense structures on rocky intertidal community in Yangtze River Delta [PDF]
, 2016 长江三角洲是长江、黄河以及在此区域的其他河流的活动形成的冲积平原。末次冰期（LastGlacialMaximum，LGM）以后的一万年以来，长江三角洲在海陆交互作用的影响下逐渐扩展。位于长江三角洲地带的近900km的江苏沿岸海岸线除约40km的基岩海岸以外，均为不适宜岩相潮间带生物大量聚集的淤泥质平原海岸。近年来随着中国沿海经济的飞速发展，对土地需求的不断增加，越来越多的沿岸防护建筑正在被修建，成为我国沿岸的“海上长城”。这些沿岸防护建筑显著改变了江苏沿岸的滩涂景观，可能对潮间带群落造成严重影响 ...
黄雄伟
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Survey Experiments in Public Policy: A Systematic Literature Review
Review of Policy Research, Volume 43, Issue 2, March 2026.ABSTRACT This systematic literature review examines population‐based survey experiments (PBSE) in public policy, analyzing 36 peer‐reviewed articles from Web of Science and Scopus databases. Based on PBSE methodological literature and the review, four main types of PBSE are distinguished: methodological, direct (based on information provision ...
Radek Kovács, Arnošt Veselý
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Zhongguo shiyan zhenduanxue, 2020 胎儿畸形是产前检查的主要项目,也是确保优生优育、降低出生缺陷率的关键。胎儿中枢神经系统畸形是临床常见、多发的胎儿畸形类型,也是导致胎儿及新生儿残疾、死亡的主要原因,以往临床主要采用超声检查胎儿中枢神经系统畸形,但随着近年来影像学技术不断发展 ...
李金成, 孙效松, 程敏, 吴巍
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Taxonomic study on the Subgen. Metacamellia（Theaceae） [PDF]
, 2015 后生山茶亚属Subgen.MetacamelliaChang下有连蕊茶组Sect.TheopsisCoh.St.和毛蕊茶组Sect.EriandriaCoh.St.，主要分布于在中国长江以南的热带、亚热带地区，少数种类分布到中南半岛北部和琉球群岛南部。由于学术界对山茶科分类性状的演化路径意见不一致，导致对该亚属的系统地位和该亚属下若干种类的划分存在争议。本研究以标本和文献研究为基础，综合野外居群观测、形态学、叶表皮微形态、孢粉学以及分子系统学证据，对该亚属植物进行了分类学修订。 对该亚属16种 ...
吕林玲
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