Results 21 to 30 of about 224,514 (158)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT With excellent castability and dimensional stability, Zn alloys are widely used in the automotive and electronic industries. However, the inherent trade‐off between strength and ductility remains a key bottleneck limiting their application in high‐performance fields.
Jianxing Zhou +11 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 4, Page 461-469, April 2026.ABSTRACT Objective The aim of this study was to evaluate the perinatal outcomes of monochorionic diamniotic (MCDA) twin pregnancies complicated by early twin‐to‐twin transfusion syndrome (TTTS) treated with fetoscopic laser surgery (FLS), and to compare rates of fetal survival across Quintero stages.
F. G. Sileo +35 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva +9 more
wiley +1 more source
In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Current plant conservation efforts are hindered by, for example, poor seed germination, low viability, and insufficient propagation and preservation technologies. To address these problems, we devised an approach to plant conservation that integrates conservation, preservation, and restoration (CPR), which uses advanced in vitro techniques. We
Mukund R. Shukla +4 more
wiley +1 more source
野生动物学报, 2023 为揭示喜马拉雅旱獭（Marmota himalayana）的遗传进化机制，基于双酶切RAD（dd-RAD）测序技术，对青海省3个地区（乐都、玉树、黄南）44例喜马拉雅旱獭简化基因组测序分析，通过SNP位点刻画其遗传特性，构建系统进化树，分析种群结构特征，从基因水平分析不同地区个体之间的遗传进化关系。结果显示：3个地区喜马拉雅旱獭共获得19 279 845个SNP位点，具有丰富的遗传多样性，各地区喜马拉雅旱獭的观测杂合度（Ho）为0.236~0.269，期望杂合度（He）为0.232~0.254 ...
李优, 南新营, 赵坤钰, 李耀东
doaj
Integrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee +5 more
wiley +1 more source
Genetic origins and climate‐induced erosion in economically important Asian walnuts
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract The global climate is undergoing unprecedented changes, posing significant threats to species persistence. However, the spatiotemporal impacts on genetic diversity remain poorly understood, hindering species conservation and management. Walnuts, generally referred to as Juglans regia and J. sigillata, are economically vital in Asia, but little
Peng‐Zhen Fan +17 more
wiley +1 more source
, 2012 在遗传学及其他生命科学研究领域，实验用鱼已成为一类应用越来越广的实验动物，但是尚缺少标准化的质量控制标准和监管。在我国，实验动物实行严格的许可证制度和质量监督制度。实验用鱼遗传质量控制标准是实验用鱼质量控制的基础。为了规范实验用鱼的遗传质量，避免实验用鱼种质退化、遗传漂移，导致实验结果误差，开展了本标准的研究。依据《实验动物管理条例》，参考国内外实验用鱼遗传学相关的研究成果，结合我国实验用鱼生产和使用的实际情况，在全面收集、分析实验数据和广泛征询专家意见的基础上 ...
朱晓红 +7 more
core +2 more sources
Zhongguo shiyan zhenduanxue, 2017 恶性肿瘤是一种体细胞遗传病,为相关基因结构与功能发生改变的结果,本文就大肠癌与之相关的基因突变及遗传易感性进行综述。1肿瘤的发生与基因突变的关系恶性肿瘤的发生及发展与相关的基因结构及其相关的功能发生改变有关。这些基因参与调控细胞的的正常生长周期、细胞的死亡及DNA的损伤修复。基因的种系突变（germ line mutation）在遗传性恶性肿瘤中起主要作用[1]。突变是生物进化的必要条件之一,没有突变就没有进化 ...
侯睿智, 舒振波, 侯睿达, 刘艳
doaj
Gaoya dianqi, 2022 为了实现固态变压器绝缘性能的提升，满足其电压等级提升和紧凑型一体化设计的需求，利用遗传算法与电场仿真联合方法优化了固态变压器高压连接处绝缘结构。首先通过建立一体化固态变压器的绝缘结构模型，计算了稳态电场分布状态及局域电场集中位置，发现高频变压器与电力电子模块连接处接地截止点局域最高电场达6.97 kV/mm，高于空气击穿强度。其次设计了圆弧形模块连接绝缘结构将接地截止点埋入固体绝缘介质中，并通过遗传算法与电场仿真联合方法优化了圆弧形结构尺寸参数，使得连接处最高电场转移至固体绝缘介质内部 ...
袁妮, 吴俊丽, 冷兆云
doaj