Results 11 to 20 of about 5,214 (167)

Geographic risks to functional groups of mammals and birds from habitat loss in Mexico

open access: yesConservation 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

An experimental approach to assess the combined effects of multiple stressors on a large vertebrate species

open access: yesConservation 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

The Study of Social Work Intervention in the Risk of Falls in the Elderly at Home: A Case Study of Risk Assessment and Avoidance Project of High Risk Elders in A Community [PDF]

open access: yes, 2016
随着我国老龄化程度的不断加深,老年人越来越成为一个不可忽视的群体,保障老年人生活安全和健康是当前社会的重要议题。近年来,老年人居家安全的问题日趋凸显,其中跌倒是威胁老人生活安全、降低其生活质量的重要原因,也是老年人死亡的首因,一度成为医疗护理专业实务和研究的主要领域。社区居家养老服务是社会工作的主要服务和研究领域之一,但是社区老人居家跌倒却是该学科研究的盲区。本文的研究问题是:1.社区空巢高危老人是否存在居家跌倒的问题?影响这一问题的因素是什么?是否存在社会工作可以介入的因素?2 ...
潘苓苓
core  

Calibration of the species threat abatement and restoration metric's threat abatement component in a Costa Rican landscape

open access: yesConservation 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

Spatial-temporal Distribution and Ecological Risk Assessment of Quaternary Ammonium Compounds in Urban Estuarine Sediments [PDF]

open access: yes, 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  

Integrating Urban Expansion and Flood Risk: A Spatial Assessment of Impervious Surface Growth and Floodplain Exposure in Mecklenburg County (2011–2021)

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Urban expansion significantly impacts flood risk, particularly in rapidly growing areas where impervious surfaces exacerbate surface runoff. This study examines spatial patterns of urban growth and their effects on flood exposure in Mecklenburg County, North Carolina, from 2011 to 2021.
Pegah Madadi, Azad Sadeghi
wiley   +1 more source

Distribution and Risk Assessment of Perfluorinated Compounds in Jiulong River Watershed-Estuary System [PDF]

open access: yes, 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  

Understandings and critiques of biocultural diversity conservation and future recommendations for conservation actors

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract As biocultural approaches to conservation gain traction (e.g., through international commitments to Indigenous Peoples and local communities) and external conservation actors increasingly seek to engage with on‐the‐ground holders of biocultural diversity, improved understanding is needed of what biocultural diversity means.
Natalie D. L. York
wiley   +1 more source

Internal Control Research of ATC Units in Civil Aviation--Take X ATC Station as an example [PDF]

open access: yes, 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  

基于免疫细胞浸润评分实现膀胱癌分型及预后风险评估

open access: yesZhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences, 2023
目的 基于免疫细胞浸润评分实现膀胱癌患者分型并构建预后风险评估模型。 方法 首先从癌症基因组图谱(TCGA)数据库下载膀胱癌患者的转录组数据和临床数据。然后,采用单样本基因集富集分析方法计算16种免疫细胞的浸润评分。接着,通过无监督聚类实现膀胱癌患者的分型并分析不同分型的患者对免疫治疗和化疗药物敏感性的差异。随后,通过加权相关网络分析(WGCNA)识别与关键免疫细胞浸润显著相关的关键模块,并提取模块内的关键基因。最后,构建并验证膀胱癌预后相关的风险评分模型,并结合患者临床特征构建列线图并进行验证。 结果
Gui-Hua Yin   +5 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy