Results 41 to 50 of about 1,631,705 (163)
Integrative Conservation, Volume 5, Issue 1, Page 104-114, March 2026.The Johnstone's whistling frog is an invasive species whose loud night‐time calls may affect human health and well‐being. Our study in Cali, Colombia, combined fieldwork and online surveys to assess its urban occupancy, density, and potential health impacts.
Rubén Darío Palacio, Sumana Goli
wiley +1 more source
, 2011 物种分布与多度间的正相关格局非常普遍,但该格局的生态机制却一直不太明确。提出了很多假说来解释这种分布-多度关系,其中物种的生态幅和生态位(资源可利用性)机制的研究较多。为了验证物种的生态幅和生态位是否能解释物种的多度-分布格局,研究了黄河三角洲地区湿地植物分布、多度、生态位和生态幅间的关系,结果表明:该区物种分布与多度呈显著正相关,且均与生态幅显著正相关,物种分布与生态位显著负相关,但物种多度与生态位相关性不显著。这说明物种的分布越广,其多度越高,环境容忍度越大;而可利用资源更多的物种分布更广 ...
马克明, 王德, 袁秀
core
Gaoya dianqi, 2016 研究套管介质损耗及电容量增量测试值分布特性有利于从宏观上掌握运行高压套管绝缘健康水平。文中基于大量现场数据样本,综合采用直方图法和非参数检验法,获得了不同电压等级、不同环境温度、不同环境湿度、不同生产厂家、不同运行时间等多个维度下的运行高压套管tanδ值及电容量增量的正态分布曲线。结果表明:对早期工艺水平及运行时间越长的套管,其测试值正态分布曲线均值、标准偏差越大;不同环境湿度下运行高压套管tanδ及电容量增量的正态分布曲线差异与湿度范围有关,当环境湿度高于80%时差异性才较为明显 ...
熊俊
doaj
Integrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
wiley +1 more source
Underrepresentation of bats in Africa's protected areas
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Biodiversity is severely threatened globally, with habitat loss and other human pressures accelerating species extinctions. Protected areas (PAs) are a critical conservation tool; however, their effectiveness in safeguarding many taxa, such as bats, remains unclear.
Cecilia Montauban +9 more
wiley +1 more source
, 2010 物种分布与多度间的正相关格局非常普遍,但该格局的生态机制却一直不太明确。提出了很多假说来解释这种分布-多度关系,其中物种的生态幅和生态位(资源可利用性)机制的研究较多。为了验证物种的生态幅和生态位是否能解释物种的多度-分布格局,研究了黄河三角洲地区湿地植物分布、多度、生态位和生态幅间的关系,结果表明:该区物种分布与多度呈显著正相关,且均与生态幅显著正相关,物种分布与生态位显著负相关,但物种多度与生态位相关性不显著。这说明物种的分布越广,其多度越高,环境容忍度越大;而可利用资源更多的物种分布更广 ...
马克明, 王德 , 袁秀
core
糖尿病、冠心病患者ABCA1基因R219K多态性的频率分布特点
Zhongguo shiyan zhenduanxue, 2011 目的旨在探讨我国北方地区汉族人ABCA1基因R219K多态性的频率分布特点,对血脂水平的影响,及其与冠心病、糖尿病和糖尿病合并冠心病的关系。方法采用改良碘化钠法提取基因组DNA,聚合酶链反应限制性片段长度多态性（PCR-RFLP）法分析ABCA1基因R219K多态性。结果正常对照组ABCA1基因R219K多态性RR、RK、KK基因型频率、R等位基因频率、K等位基因频率分别为28.5%、48.6%、22.9%、52.8%、47.2%;糖尿病组分别为29.6%、63.9%、6.5%、61.5%、38.5 ...
许慧, 彭浩, 蒋莹
doaj