Results 121 to 130 of about 113,142 (258)
Underrepresentation of bats in Africa's protected areas
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
国际大电网会议工作组在六、七十年代和八、九十年代,曾组织了关于高压断路器可靠性的两次国际性调查。该组织将断路器的故障分成主要失效(MF)和次要失效(mf)两大类。这两次调查的结果有关刊物已多次作过报道。 我国未参加这两次国际调查,但有自己的调查统计数字,我们应在借鉴国际经验基础上,努力提高高压断路器的可靠性,对此,提出以下方法供同行参考。
朱鸣海
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Study on sedimentary characteristics and its effects on the formation and decomposition of gas hydrate on continental slope of the northern South China Sea [PDF]
南海是中国最大的边缘海,覆盖着巨厚的富含有机质的沉积地层,沉积速率高,具备良好的生油生烃能力,具有巨大的资源潜力,是我国的海洋油气资源宝库。天然气水合物作为分布广储量大且对环境友好的资源,具有极高的科学意义和社会意义,南海北部陆坡是我国天然气水合物赋存的最有利海域。近年来南海北部多处天然气水合物钻探采样为我国天然气水合物资源的研究提供了强有力的支撑。本文通过对南海北部陆坡台西南盆地邻近海域地质调查所获沉积物柱状样进行粒度、有机碳、孔隙水、元素矿物等地球化学分析 ...
龚楚君
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Abstract Wildlife tourist attractions (WTAs) can permit interactions between humans and wildlife that are detrimental to the animals’ welfare and species conservation. Social media portraying human–wildlife interactions could affect people's perceptions of their acceptability and desirability or stimulate demand for detrimental practices.
T. P. Moorhouse, A. Elwin, N. C. D'Cruze
wiley +1 more source
通过采用典型调查和抽样调查相结合的方式,对全国6所城市的小学生进行问卷调查,并对少数专家学者进行了深度访谈,获取了野生动物保护现状调查资料。在此基础上,通过分组整理、对比分析和交叉分析的方法对获得的数据进行分析总结,得出调查地区野生动物保护意识较强,尤其是学校在生态道德教育方面的工作开展的较好,对未成年人的生态道德意识的培养有着一定的促进作用。而家庭方面应该进一步注重对孩子的生态道德教育,家长应当多引导孩子走进自然、爱护自然。
卢琳琳
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[Choice of medical treatment for renal colic: A survey of Chinese urologists]. [PDF]
Wang MR +8 more
europepmc +1 more source
Research and Application on Financial Due Diligence of Investment [PDF]
从众多历史经验来看,有相当多的投资者因为对被投资企业(也称作目标企业)的财务、资产和经营情况知之甚少,对其复杂性预计不足,最终导致投资失败。失败原因主要都是因为没有对尽职调查引起足够的重视,使得尽职调查往往只是流于形式。 尽职调查又被称作谨慎性调查,由财务尽职调查和法律尽职调查组成。在企业风险投资过程中信息不对称风险已成为重要的风险之一,而财务尽职调查是降低风险投资过程中信息不对称风险的最主要手段,是风险投资过程中的重要环节。财务尽职调查从资产、债务、内部控制、经营情况、历史沿革、法律规范 ...
孙宇开
core
Detecting mass mortality events in wildlife populations
Abstract Reports in the literature of mass mortality events (MMEs) involving diverse animal taxa are increasing. Yet, many likely go unobserved due to imperfect detection and infrequent sampling. MMEs involving small, cryptic species, for instance, can be difficult to detect even during the event, and degradation and scavenging of carcasses can make ...
Jesse L. Brunner, Justin M. Calabrese
wiley +1 more source
摘要: (免费在线浏览)摘要:[目的]了解发热患儿家长健康教育需求情况。[方法]采用自行设计的发热患儿家长健康教育需求调查问卷对300例发热患儿家长进行调查,由调查人员介绍调查目的和要求,对调查项目逐一询问并填写。[结果]门诊发热患儿家长健康教育需求排列前4位的依次为常用简单有效的物理降温法(61.33%)、科学喂养增加机体抵抗力(59.33%)、预防感染性疾病的发生(58.67%)、合理使用抗生素(58.00%)。[结论]门诊发热患儿部分家长疾病知识欠缺,对疾病知识需求较普遍 ...
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