Results 111 to 120 of about 1,498,824 (286)
Conservation Biology, EarlyView.Abstract Knowledge of species distributions is essential for informing policies on nature conservation and restoration. However, updating them on a regular basis and doing so in a harmonized manner at the international level is difficult. The European Bird Census Council integrated national monitoring data covering 5 years to update farmland bird ...
Sergi Herrando +54 more
wiley +1 more source
血液红细胞谷胱甘肽转移酶检测在维持血液透析者透析充分性评估中的临床意义研究
Zhongguo shiyan zhenduanxue, 2014 目的探讨维持血液透析患者红细胞谷胱甘肽S转移酶（GST）水平及其与透析充分性及炎症因子的相关性。方法根据单位室模型尿素指数值（spKt/V）将84例长期维持血液透析的终末期患者分为血液透析充分组（spKt/V≥1.3）33例以及血液透析不充分组（spKt ...
刘扬, 战海涛
doaj
Estimating the total mortality of seabirds following a marine heat wave
Conservation Biology, EarlyView.Abstract Marine heat waves detrimentally affect a range of marine species, including seabirds, and are increasing in frequency and severity. When thousands of dead seabirds wash up on beaches, the public becomes concerned. However, the number of dead birds recorded on beaches is only a fraction of the total mortality; most birds perish at sea.
Jennifer L. Lavers +3 more
wiley +1 more source
A more‐than‐human political ecology of Indonesian songbird trade
Conservation Biology, EarlyView.Abstract Since its inception, conservation science has considered wildlife trade a problem. In focusing on conservation outcomes, conservationists almost completely ignore the welfare of traded animals and plants and the harms they endure. We developed a political ecology approach that incorporates the interconnectedness of people with animals and ...
Sicily Fiennes +9 more
wiley +1 more source
全球变局下我国大豆产业安全研究Research on the security of soybean industry under global changes in China
Zhongguo youzhi旨在深入把握我国大豆产业发展态势，助力国家粮食安全战略目标的稳步推进，围绕生产安全、市场安全、科技安全、生态安全4个量化维度，构建了基于13个指标的大豆产业安全指数评估模型。借助大豆产业的相关统计数据，分析了2013—2023年我国大豆产业的安全状况，并结合我国大豆产业振兴战略，从生产、市场、科技、生态4个方面给出大豆产业安全发展的建议。结果表明：2013—2023年，我国大豆产业整体安全程度呈现出阶段性波动态势，仅有4年处于基本安全区间，总体安全水平仍有较大上升空间；生产安全指数受自给率 ...
高峰1，王剑2，魏同洋2，武婕2，宋正阳2GAO Feng1, WANG Jian2, WEI Tongyang2, WU Jie2, SONG Zhengyang2
doaj +1 more source
Conservation Biology, EarlyView.Abstract Procedural, distributional, recognitional, and epistemic justice aspects of conservation interventions are well documented in contexts where pastoralism is a key livelihood and way of life. Geospatial analyses and representations of wildlife conservation and restoration that are increasingly applied in pastoralist rangeland socioecological ...
Ryan R. Unks
wiley +1 more source
Jixie chuandong, 2009 描述了ANSYS分析中心孔带有键槽的直齿圆柱齿轮的应力分布与结构尺寸,给出了有限元分析的应力和位移,同时分析了键槽根部半径对应力的影响,分析了键槽与齿槽的相对位置影响,最后给出了最优相对位置。
于军, 王伟
doaj