Results 21 to 30 of about 785,191 (159)
Zhongguo shiyan zhenduanxue, 2023 目的 研究再生障碍性贫血(AA)病人外周血NK细胞及其受体表达的变化，探讨NK细胞在AA发病机制中的作用。方法 利用流式细胞术检测28例AA病人(其中SAA 9例，NSAA 19例)外周血NK细胞功能，包括NK细胞数量，活化性受体NKG2D,抑制性受体NKG2A,穿孔素，颗粒酶β的表达，T淋巴细胞亚群及与造血指标的相关性分析，另有18例健康志愿者为对照组。结果 AA病人外周血NK细胞数，NKG2D,颗粒酶表达减少，与对照组比较差异有统计学意义 ...
孔令环 +6 more
doaj
Zhongguo youzhi, 2022 通过气相色谱和傅里叶红外光谱仪测定86个油茶籽油样本的脂肪酸组成和红外光谱图，采用支持向量机（SVM）和BP人工神经网络（ANN）的非线性建模方法，构建油茶籽油中主要脂肪酸的定量回归模型。结果表明：ANN建立的油酸和棕榈酸定量回归模型精确度比SVM高，校正集的相关系数（R）分别为0.998 7和0.945 1，预测集的相关系数分别为0.955 7和0.926 2，相对标准偏差分别小于1%和5%；SVM和ANN建立的亚油酸定量分析模型精确度都非常高，相对标准偏差均小于1 ...
吴雪辉1,2，何俊华1，王泽富1 WU Xuehui1,2, HE Junhua1, WANG Zefu1
doaj +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Formic acid (FA) is considered to be a safe and convenient hydrogen source; however, achieving controlled and efficient FA dehydrogenation under mild conditions using stable solid catalysts remains a significant challenge. Pd‐based catalysts have been extensively studied due to their superior catalytic activity to other metal catalysts.
Shuai Wei +10 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Measuring area‐based conservation outcomes in tropical forests is challenging due to cryptic human disturbances (e.g., hunting). As a result, comparative studies of management strategies providing quantitative outcomes remain scarce, especially in the Neotropics.
Lucy Perera‐Romero +5 more
wiley +1 more source
野生动物学报, 2022 动物行为是动物对外界环境变化和内在生理活动改变所做出的整体性反应，动物行为节律研究是了解其活动特征时空变化及影响因素的重要内容。因此，于2017年3月—2018年12月采用红外相机监测技术，在药山国家级自然保护区布设了45台红外相机对中华斑羚（Naemorhedus griseus）的日活动节律进行研究。结果表明：中华斑羚的活动具有明显的晨昏性，活动模式呈经典的双峰型，上午的活动高峰出现在06：00—09：00，活动的最高峰出现在09：00，下午的活动高峰出现在16：00—20：00 ...
赵晨光 何明超 苏晋芬 罗蕊 高顺勇 陆元敏 李旭 段玉宝
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
Integrative Conservation, Volume 5, Issue 1, Page 74-85, March 2026.This study investigates distribution patterns of Galliforms in the Indian Himalayas, focusing on factors influencing their occurrence, regions of high diversity and endemism, and their overlap with protected areas. Our study highlights the need for assemblage‐level conservation strategies in high Himalaya which primarily relies on snow leopard‐focused ...
Manvi Sharma +5 more
wiley +1 more source
Impacts of Human Development on Wildlife Use of Corridors in Botswana 人类开发对博茨瓦纳野生动物廊道利用的影响
Integrative Conservation, Volume 5, Issue 1, Page 164-171, March 2026.This study examined the effect of landscape‐scale human impact on wildlife in Botswana. We examined how species use wildlife corridors in two different human‐dominated landscapes. We identified differences in temporal overlap between wildlife and humans across both landscapes, which is fundamental to consider in both current and future conservation ...
Tempe S. F. Adams +3 more
wiley +1 more source
基于红外相机对额仁淖尔苏木盘羊(Ovis ammon)生存现状的研究
野生动物学报, 2015 自2012年12月～2013年12月,利用红外相机技术及样线法首次对额仁淖尔苏木的盘羊生存现状进行研究。结果表明:该种群由3只成体(2♂1♀)2只亚成体(1♂1♀)和1只幼体(1♂)组成; 平均每台红外相机的拍摄率为38%; 以拍摄率作为衡量盘羊活动频率的标准,冬季盘羊的活动频率达到高峰,春季和夏季较为稳定,秋季降到最低。盘羊对水源点的利用强度占2%,肉食性野生动物占21%,家畜占77%; 盘羊对隐蔽度的要求较高,占总生境的59%。
何志超 毕俊怀 陈绍勇 霍明晨 揭志良 付明霞
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Aqueous vanadium dioxide (VO2)‐based smart thermal insulation coatings represent a viable strategy to decrease building energy consumption and advance sustainable development goals. However, the inherent instability and limited compatibility with polymer matrices of VO2 hinder its widespread application.
Xiuxian Zhao +9 more
wiley +1 more source