Results 31 to 40 of about 12,718 (168)
Distribution and Risk Assessment of Perfluorinated Compounds in Jiulong River Watershed-Estuary System [PDF]
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
ABSTRACT Animal protein and plant protein make the protein supplement more comprehensive and further optimize the nutritional structure of the national diet. In this study, a “dual protein” Lueyang black‐boned chicken and black bean soup (FS) was prepared.
Mengya Zhao +6 more
wiley +1 more source
不停电作业是目前电网中的一种主要检修方式,对其展开有效的风险评估是电网安全运行的重要保障,但作业过程中不同类型影响因素的复杂耦合关系对其风险评估结果的准确性提出了挑战。文中筛选了作业人员健康数据、绝缘数据、线路状态数据为主要输入量,依据行业标准确定了各因素风险系数判据,利用深度学习在提取数据特征方面的灵活性,提出了基于多模态深度学习的不停电作业风险评估算法;基于实测及调研数据建立了各输入量物理模型及训练样本库,并使用该算法对不停电作业风险进行了评估。通过与SVM、ANN等传统算法的对比 ...
张玮亚 +5 more
doaj
Urbanization may alter bird foraging. Austral Parakeets (Enicognathus ferrugineus) in Patagonia rely on introduced plants in urban areas, especially in winter, despite preferring natives in the wild. This seasonal reliance on introduced species highlights urbanization trade‐offs and underscores the need to manage green areas with native plants to ...
Rocío Bahía +2 more
wiley +1 more source
Review on Physiological Function of Alkylamide Compounds from Zanthoxylum bungeanum(花椒麻味物质的生理作用研究进展) [PDF]
Zanthoxylum bungeanum, belonging to Rutaceae family and Zanthoxylum L. genus, is one of the traditional “eight major condiments” in China, which is an important ingredient in many kinds of traditional Chinese medicines due to the functional activites of ...
KAN Jianquan(阚建全) +4 more
doaj +1 more source
Internal Control Research of ATC Units in Civil Aviation--Take X ATC Station as an example [PDF]
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
The Asian Songbird Crises negatively affects so‐called master birds, species that are used to increase the song complexity of competitive songbirds. We assessed the trade in a master bird, the crested jayshrike, in Indonesia before and after its legal protection.
Vincent Nijman +11 more
wiley +1 more source
电缆线路作为配电网不可或缺的一部分,合理地对电缆线路实施状态检修具有非常重大的意义。通过对电缆线路健康水平进行风险评估,可以有效地对电缆线路实施状态检修。文中在对电缆线路风险因素分析的基础上,研究了电缆线路风险评估模型的建立和评判方法,根据电缆线路组件的不同风险状态量,建立电缆线路风险因素集和影响列表。针对不同检修人员的不同评估意见,不同类型数据所用的不同评估标准,将精确数学评判模糊化,提出了基于模糊数学的电缆线路多级模糊风险评判方法。各风险因素的向量和重要程度系数通过专家评议法确定 ...
黄新波 +5 more
doaj
The Internal Control Research of the Purchasing in Y Tobacco Industry Company [PDF]
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
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

