Results 21 to 30 of about 14,363 (211)
Integrative Conservation, EarlyView.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
Spatial-temporal Distribution and Ecological Risk Assessment of Quaternary Ammonium Compounds in Urban Estuarine Sediments [PDF]
, 2016 四季铵盐化合物（QACs）是一类主要的阳离子表面活性剂，广泛使用于衣物柔顺剂、消毒剂、个人护理品等产品中。QACs易吸附于沉积物上且不易降解，欧美国家于上世纪八十年代已经禁止部分难降解QACs的使用，而亚洲国家仍在大量使用QACs作为商业产品的主要有效成分。在城市化河口环境中关于QACs的分布特征和环境行为的研究还很少。本研究进一步优化了QACs在沉积物的痕量分析方法，选取珠江口这一典型城市化河口区域，研究其表层沉积物中QACs的分布特征和环境行为，并对比分析珠江口沉积物中其他污染物（207种 ...
王翠翠
core
Integrative Conservation, EarlyView.Our research allows us to understand the predictors of extinction risk in traditional Chinese medicinal (TCM) plant species with known threat status, and incorporate this knowledge to predict other TCM plants with unknown conservation status in China so as to improve the overall effectiveness of conservation strategies.
Yuhan Zheng +4 more
wiley +1 more source
Distribution and Risk Assessment of Perfluorinated Compounds in Jiulong River Watershed-Estuary System [PDF]
, 2016 九龙江是闽南和闽西地区重要的饮用水源和工农业用水水源，但近年来九龙江污染日趋严重，河流生态系统承受着巨大的压力，其中持久性有机污染物(POPs)因其难降解性、生物富集性和高致毒性备受人们关注。全氟化合物(PFCs)是一类碳链上氢原子全部被氟原子取代的有机化合物，由于其良好的疏水、疏油特性，已被广泛应用于多种工业和民用产品中，与人类生产生活密切相关。由于PFCs稳定性极强，目前已在包括水、土壤、大气等环境介质及生物体中大量检出。毒理学研究表明，部分PFCs具有致癌性、肝毒性、神经毒性、生殖毒性、免疫毒性等，
蔡一枝
core
Geographic risks to functional groups of mammals and birds from habitat loss in Mexico
Conservation Biology, EarlyView.Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás +4 more
wiley +1 more source
The Internal Control Research of the Purchasing in Y Tobacco Industry Company [PDF]
, 2016 长期垄断的管理方式，使得烟草企业过度依赖专卖保护，整体风险意识淡薄，内部控制薄弱，在风险评估、预测机制方面处于缺失状态。烟草企业缺乏内部控制、风险评估机构和相应的人员配备，整个行业在风险应对方面经验不足。随着烟草行业内部改革的逐步深入，行业经营秩序日趋规范，对企业加强内部控制提出迫切要求。物资采购是企业内部控制的重要组成部分，完善采购内部控制有利于企业防范采购风险，提高采购效率，降低采购成本，促进企业持续健康发展。 本文共包含六章：第一章是引言部分，第二章对内部控制及采购内部控制的相关概念进行阐述 ...
陈欣
core
Conservation Biology, EarlyView.Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta +24 more
wiley +1 more source
Internal Control Research of ATC Units in Civil Aviation--Take X ATC Station as an example [PDF]
, 2015 在我国，经过几十年的发展，“内部控制”已逐渐被各行各业所认识和应用，并拥有不少研究成果。本文，笔者在大量学习、整理事业单位内部控制研究文献、资料的基础上，总结前辈先贤研究成果，以西方COSO内部控制框架理论为基础，参考我国企业内部控制理论的内容，以民航X空管站为研究案例，从一个财务工作者的角度，提出对民航空管事业单位内部控制的一点浅见。在文章的论述中，笔者将注重表述的通俗性和简洁性，让读者能一目了然地了解笔者的思考和结论，同时保证研究和结论有较强的针对性和实践性 ...
公洛颖
core
Conservation Biology, EarlyView.Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair +17 more
wiley +1 more source
Dianci bileiqi, 2010 我国从2008年11月起实施GB/T 21714.2-2008建筑物防雷设计规范,它适用于建筑物和服务设施的雷击风险评估。基于新国标对某教学楼进行雷击风险评估,为新国标的应用和普及提供参考。首先对教学楼进行数据采集和分区,按照评估流程和方法对其进行雷击风险评估。将所得雷击风险值与风险容许值进行比较,得出评估结果。最后对教学楼及其内部的电子设备提出防雷建议。教学楼直接雷击的风险值和间接雷击的风险值都小于风险容许值,现有的防护措施基本能满足教学楼的防雷需要。
崔雪
doaj