Results 51 to 60 of about 61,733 (199)
Distribution, scale, and drivers of mass mortality events in Europe's freshwater bivalves
Conservation Biology, EarlyView.Abstract Mass mortality events (MMEs) are decimating populations and compromising key ecosystem functions around the globe. One taxon particularly vulnerable to MMEs is freshwater bivalve mollusks. This group has important ecosystem engineering capacities and includes highly threatened and highly invasive taxa.
Daniel A. Cossey +39 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2008 目的对Olympus 2700生化分析仪酶分析系统进行性能评价,判断其分析性能是否满足临床要求。方法按照国家医学实验室认可及CAP认可要求,依照NCCLS EP5-A文件,分析ALT、AST、ALP、GGT、CK、LDH日内和日间精密度;用能力对比（PT）评价分析方法的准确度;按照NCCLS EP6-P文件评价分析方法的线性范围;评价分析方法的最低检测限和携带污染率;并对试剂说明书的参考范围进行验证。结果ALT、AST、ALP、GGT、CK、LDH的日内精密度小于1/4总分析误差,日间精密度小于1 ...
李贵星 +6 more
doaj
The collective application of shorebird tracking data to conservation
Conservation Biology, EarlyView.Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison +71 more
wiley +1 more source
Gaoya dianqi, 2017 通过试验研究了频率响应分析法检测变压器绕组变形。首先分析了频率响应分析法检测变压器绕组变形的基本原理。建立了频率响应分析法试验平台,分析了影响频率响应分析法检测绕组变形结果的主要因素。结合相关系数法对两个典型算例变压器绕组进行了变形诊断分析。通过对变压器的频率响应测试数据比较分析,结果表明了用频率响应分析法判断变压器绕组变形仍存在一定的局限性。
张海军, 王曙鸿, 刘艳琴
doaj
How much biotic nativeness matters across human demographic groups
Conservation Biology, EarlyView.Abstract Many central concepts of conservation biology—such as nativeness—are structured by ecological and social factors. However, the social consequences of using these concepts to make conservation decisions remain inadequately understood. Some researchers argue that nativeness, rather than acting as an objective proxy for important ecological ...
Harold N. Eyster, Rachelle K. Gould
wiley +1 more source
Dianci bileiqi, 1993 用X射线衍射分析和岩相分析及差热分析等手段,分析了岫岩钾长石的一系列物理化学性能,通过分析发现,岫岩钾长石化学成分符合电瓷材料规范要求,可用于高压瓷生产.
滕春福
doaj
Conservation Biology, EarlyView.Abstract Recognition and engagement of Indigenous Peoples and local communities (IP&LCs) and other traditional knowledge (TK) holders in formal biodiversity governance remain limited, despite their significant contribution to the conservation and sustainable use of biodiversity through their knowledge, innovations, practices, and land stewardship.
Kinga Öllerer +8 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan对于大型复杂空间钢结构，可靠的施工过程分析对保障施工安全性和钢结构安装质量具有重要意义。在传统施工过程分析与钢结构直接分析的基础上，提出一种考虑构件和安装模块初始缺陷以及变形累积的钢结构非线性施工过程分析方法。利用NIDA软件将该方法应用于成都某大悬挑钢桁架结构的施工过程分析中，确保了施工方案的可行性。同时，对比分析了非线性施工过程分析、一次成型分析和线性施工过程分析3种分析工况下结构关键节点位移及构件应力情况，并与施工实测值进行了比对。结果表明，一次成型分析与线性施工过程分析的位移较实测值偏小 ...
刘宏伟 +5 more
doaj +2 more sources
Gaoya dianqi, 1997 研究了基于高压断路器振动信号的分析对断路器的机械故障进行诊断的方法,其中对振动信号的分析采用小波分析。研究表明,小波分析在断路器机械振动信号的分析中优于传统的Fourier分析,并在机械故障诊断方面有显著的效果。
张伟政, 杨兰均, 张文元
doaj
Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, EarlyView.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