Results 31 to 40 of about 633,710 (151)
Integrative Conservation, Volume 5, Issue 1, Page 10-15, March 2026.First confirmed breeding of the Brown Hornbill in China, documented through cooperative feeding in Shangyong Protected Area. ABSTRACT The Brown Hornbill (Anorrhinus austeni), a Near Threatened frugivore, reaches the northern edge of its distribution in southern Yunnan, China, yet breeding had not been previously documented with site‐attributed nests in
Junsong Li +8 more
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脉冲风洞中用油滴表面流动显示技术研究激波-边界层干扰流动 [PDF]
, 1993 本文介绍一种适合于脉冲风洞中显示复杂流动的表面油滴技术及其实验结果。在实验时间为20至500ms 的风洞中用表面油滴技术能清晰地显示尖前缘翼诱导激波-边界层干扰流表面流谱的详细特征,其特征位置与用铂薄膜电阻温度计和液晶热图测量结果吻合。油流图像表明尖翼高超声速干扰流具有相似于超声速干扰流的锥形特性,大翼偏转角时,存在二次分离再附现象 ...
唐贵明
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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
Zhongguo shiyan zhenduanxue, 2010 目的评估一种酶法测定糖化血红蛋白（HbA1c）试剂盒的性能。方法酶法测定HbA1c,评价的方法学指标为试剂盒的线性范围、不精密度、抗干扰性、回收率,并分别与免疫法和高效液相（HPLC）法进行相关及偏倚分析。结果该试剂盒的检测在4.3-12.9%呈线性;不精密度测定低、中、高值批内及批间CV在0.89%1.43%之间,总CV在1.77-2.16%;HbA1c标准为5.5%和10.5%其回收率分别为99.0%、102.1%;干扰实验 ...
李义龙 +4 more
doaj
, 2007 对干扰条件下古尔班通古特沙漠土壤养分空间分异特征进行了研究。分析土壤养分的变化趋势,及干扰与植被和土壤养分之间的关系。研究表明:沙漠边缘至沙漠腹地,全N、全P和全K含量、EC、总盐,可溶性离子HCO3-、SO42-及Ca2+呈增加趋势。CO32-、Mg2+、Cl-、Na+4种离子含量较低,变化规律不明显。除全K含量随公路里程呈较连续的增加外,其他养分条件在公路里程25—75km,80—125km和大于125km的范围内的变化趋势都呈现高→低→显著增高的波动过程,分析表明这种波动性的变化是由干扰造成的 ...
潘伯荣 +5 more
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Factors That Influenced Coping With COVID‐19 During the Pandemic in Botswana
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT This paper forms part of the broader Global South study, Personal and Family Coping with COVID‐19 in the Global South, which examines psychosocial and behavioral responses to the COVID‐19 pandemic. In Sub‐Saharan Africa, the pandemic posed significant psychological, social, and economic challenges, with important implications for preparedness ...
Magen Mhaka‐Mutepfa +3 more
wiley +1 more source
, 2001 采用高精度差分格式求解非定常可压缩N-S方程,对激波－单涡／双涡相互干扰产生的声场进行了直接数值模拟.详细研究了波－涡干扰声场结构的早期发展阶段,将激波－单涡的计算结果和相应实验进行了对比,并给出近场声压的衰减规律.在此基础上模拟较为复杂的激波－双涡干扰 ...
马延文, 胡国庆, 傅德薰
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, 2006 古尔班通古特沙漠作为北疆冬季牧场,普遍承受牲畜的践踏干扰,研究表明:动物践踏干扰导致各种类型生物结皮的覆盖度有不同程度的降低,干扰主要集中于结皮层(0~2 cm)。微生物各类群对践踏干扰的反应具差异性,真菌与干扰的相关性最高,细菌和放线菌对干扰不敏感。践踏干扰改变了微生物各类群在垄间低地的数量垂直分布格局,但并未改变微生物区系组成。有机质对干扰不敏感,仍随土层加深而递减,在结皮层(0~2 cm ...
梁少民 +4 more
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Robust metrics for quantifying and comparing resistance and recovery in experimental studies
Methods in Ecology and Evolution, Volume 17, Issue 1, Page 6-14, January 2026.Abstract Various indices have been developed to experimentally quantify resistance and recovery (two components of engineering resilience) in response to anthropogenic and natural disturbances. This diversity complicates the selection of appropriate metrics for comparing resilience across ecosystems and studies.
Zewei Zhuang +2 more
wiley +1 more source
, 2014 本发明公开一种能隔离强脉冲干扰的测控系统，该系统包括：压力变送器，与放电腔相连，负责放电电路对腔内气体放电时，对放电腔内的气体压力进行测量；隔离电路，与压力变送器的输出端相连，对输出的电信号进行采样，使输入和输出信号电隔离，并实现输入和输出的线性转换；采集系统，与隔离电路的输出端相连，把隔离电路输出的无干扰信号采集到计算机系统中，并通过测控软件显示出来。本发明通过对高功率脉冲放电期间，对耦合到测试信号传输线的干扰信号的隔离，有效的减少了强脉冲干扰的幅度，阻止了强脉冲干扰信号对测试系统的损害 ...
多丽萍 +6 more
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