Results 131 to 140 of about 68,002 (248)

Studies on Genes Related to Copper Accumulation of the Fujian Oyster Crassostrea angulata [PDF]

open access: yes, 2015
牡蛎是具有重要经济价值的海水养殖品种,在世界很多地区都有养殖。而我国牡蛎养殖产量居世界首位。同时,牡蛎对铜、锌等金属具有很强的富集能力,经常被用于指示河口污染情况。随着工业发展,近岸河口区遭受越来越严重的金属污染,铜就是其中非常有代表性的金属污染物。因此牡蛎对铜的超富集现象越来越被人们所关注。学者们发现牡蛎对铜富集存在非常大的个体差异,然而相关的研究却非常有限,特别是缺少分子机制的解析。对这一现象的深入研究不但可以探寻、丰富牡蛎铜富集相关机制,更可以为选育牡蛎不同金属富集能力品系提供理论依据 ...
史博
core  

Exceptional Electromagnetic Wave Absorption in High‐Entropy Carbides Enabled by Lattice Distortion Engineering

open access: yesRare Metals, EarlyView.
ABSTRACT The growing concern over human health issues, driven by increasingly severe electromagnetic pollution from 5G communication, has made the urgent development of high‐performance electromagnetic wave (EMW) absorbing materials. Although carbide‐based materials are promising because of their conductive and polarization losses, existing single ...
Chenqiang Duan   +9 more
wiley   +1 more source

无蹼壁虎线粒体全基因组及系统发育分析

open access: yes野生动物学报, 2017
经PCR扩增和序列测定,获得了无蹼壁虎(Gekko swinhonis)的线粒体基因组全序列,其总长为16 818 bp,含有13个蛋白质编码基因、2个rRNA基因、22个tRNA基因和1个控制区。各基因的位置、排列顺序及转录方向均和大部分的有鳞目物种一致。无蹼壁虎线粒体基因组的碱基组成分别为:A(31.35%)、T(26.28%)、C(27.71%)、G(14.67%)。除Ser(GCU)缺失DHU臂外,其余的21个tRNA都可以形成典型三叶草结构。13个蛋白质编码基因中 ...
秦 峰 曾德龙 高成伟 秦新民
doaj  

Population genetic structure and phylogentic analysis for Morone americana in Delaware Bay of United States [PDF]

open access: yes, 2016
美洲狼鲈(Moroneamericana,Gmelin,1789)隶属于鲈形目(Perciformes),狼鲈科(Moronidae),狼鲈属(Morone),别名美洲白鲈、白石鮨。美洲狼鲈是在美国东海岸浅海区域十分常见的一种溯河洄游鱼类,每逢春末夏初,生活于近海和河口区域的美洲狼鲈便溯河洄游至河流中上游产卵繁衍。美洲狼鲈也经常被用作海区污染程度的指示种。鉴于美洲狼鲈广泛的分布范围以及巨大的种群数量,其十分适合作为近岸洄游性鱼类群体研究的模式种类。同时,其在检测环境污染方面也具有主要作用 ...
边力
core  

Conservation Funding at the Local Level 地方层面的保护资金

open access: yesWildlife Letters, EarlyView.
Direct conservation fund transfer to local communities ensures the involvement of these communities in decision‐making and fund utilisation, which will ultimately lead to effective biodiversity conservation. A Cakchiquel family in the hamlet of Patzutzun, Guatemala, 1993. Credits: John Issac. Source: UNEP‐WCMC Internal Resources.
Jithu K Jose
wiley   +1 more source

携 HBx 基因逆转录病毒载体的构建

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2000
【目的】构建携 HBx 基因的逆转录病毒载体, 为研究 HBx 基因与肝癌生物学行为间的关系提供基础。【方法】采 用 PCR 技术从 HBV 全基因组中扩增 HBx 基因; 将 HBx 基因亚克隆至质粒 pLNSX, 构建质粒 pLNSHBx,磷酸钙-DNA 共沉淀 法将重组体导入包装细胞系 PA317, 检测培养上清病毒滴度。【结果】应用 PCR 技术成功地从 HBV 基因组中克隆出全长 HBx 基因, 并经序列分析证实; 建立了产病毒细胞株 PA317/HBx,检测其培养上清病毒滴度为 8.
闵 军, 刘彦文, 陈积圣
doaj  

The Role of Messenger RNA Alternative Polyadenylation During Developmental Gene Expression Regulation and Adapdation of Rice [PDF]

open access: yes, 2016
水稻(Oryzasativa)不仅是世界上最重要的粮食作物之一,也是单子叶模式植物。水稻品种japonicaNipponbare和indica93-11为两个水稻亚种代表,广泛的种植于我国的南北区域,对环境与气候形成一定的适应性,在我国形成北粳南籼的生产格局。它们各自具有独自的生理特性和生长周期。转录组为特定生理条件下,细胞中全部转录产物的集合。通过对水稻发育过程转录组的研究,可以全面地了解基因表达调控在水稻发育过程中的调节作用以及对环境适应性。多聚腺苷化是基因在转录形成成熟的转录本之前的加工过程之一 ...
付海辉
core  

Changes of Potential Suitable Areas for Lynx Under Climate Change in Mohe Area, Daxing'anling Mountains, China

open access: yesWildlife Letters, EarlyView.
Climate change drives shifts in suitable habitats for Eurasian lynx and its prey (hare, roe deer) in Mohe, Daxing'anling Mountains. Under RCP scenarios, moderate warming (RCP4.5) promotes substantial habitat expansion, while high‐emission conditions (RCP8.5) lead to strong expansion in the 2050s but slower gains and partial contraction by the 2070s ...
Binglian Liu   +5 more
wiley   +1 more source

Conservation Status, Decline Factors, and Strategies for Globally Endangered Musk Deer (Moschus spp.) in China 中国境内全球濒危麝属 (Moschus spp.) 物种的保护现状、致危因素及应对策略

open access: yesWildlife Letters, EarlyView.
This review summarizes the status of musk deer in China, highlighting severe population declines due to illegal hunting and habitat loss, and proposes integrated conservation strategies including habitat protection, captive breeding, and law enforcement to support the recovery and sustainable management of this ecologically and economically important ...
Feng Jiang   +8 more
wiley   +1 more source

中国吉林省地区朝鲜族及汉族正常人群内皮型一氧化氮合酶基因4a/bVNTR多态性分布的比较研究

open access: yesZhongguo shiyan zhenduanxue, 2013
目的分析我国吉林省地区朝鲜族及汉族健康人群内皮型一氧化氮合酶(endothelial nitric oxide synthase,eNOS)基因4a/bVNTR多态性的分布。方法应用聚合酶链式反应(polymerase chain reaction,PCR)技术,检测183例吉林省正常人(其中朝鲜族人群92例,汉族人群91例)eNOS基因多态性,并结合统计学软件分析其分布特点。结果我国吉林省朝鲜族人群eNOS基因4a/bVNTR的aa、ab和bb基因频率分别为0.043 48、0.304 3和0.652
李淼   +5 more
doaj  

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