Results 31 to 40 of about 1,330,993 (165)
Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
Ecology and Evolution, Volume 16, Issue 5, May 2026.This study reveals a shift in woody plant community assembly from competitive exclusion in early succession to habitat filtering in later stages within karst areas. Environmental distance (80.54%) contributed significantly more than geographical distance (9.95%), providing strong quantitative evidence that niche processes, particularly habitat ...
Hongfen Hu +5 more
wiley +1 more source
四川大学学报. 自然科学版, 2000 作者以白肋烟雄性不育系及其保持系为材料 ,从细胞形态学角度对雄性不育性作了较系统的研究 ,得出如下结果和结论 :1 白肋烟雄性不育系雄性器官显著异常 ,表现为 :①雄蕊原基根本不发生或发生后随着花器的发育完全退化消失 ,结果表现为完全无雄蕊 ;②有雄蕊原基发生 ,能形成雄蕊类似物 ,但都表现出显著畸变退化 ,形式多样 ,呈细丝状、短棒状、瓣状、类柱头状等 ,数目少于 5个 ,并且极短于柱头 .2 确定了不育系败育的时期和方式 :不能形成正常的小孢子发生组织 ,根本无减数分裂过程发生 ...
陈晓斌 +3 more
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng +4 more
wiley +1 more source
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
Curriculum arrangement for pediatric clinical nurse specialists in America
Huli yanjiu, 2005 临床护理专家在美国已形成了较系统的教育体系。对美国儿科护理专家课程设置进行介绍,以期对我国儿科临床护理专家研究的发展给予启发和借鉴。
殷彩欣, 王惠珍
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin +9 more
wiley +1 more source
, 2002 在回顾纤毛虫分子系统发育学产生发展历史的基础上 ,介绍了随后 2 0年中RFLP、RAPD和DNA序列分析等分子生物学技术作为该学科的主要研究方法在种群遗传多样性与进化、种上阶元系统发育学两方面取得的研究成果和近期研究进展 ,最后在探讨纤毛虫分子系统发育学存在的一些问题和解决方法的同时 ,预测了纤毛虫分子系统发育学今后将极大地推动真核生物的起源与进化 ...
缪炜,余育和,沈韫芬
core
Hobbyist preferences for pet freshwater turtles
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao +7 more
wiley +1 more source