Results 51 to 60 of about 688,354 (170)
Zhejiang Daxue xuebao. Lixue ban, 2018 六溴环十二烷是一种使用量较高的溴代阻燃剂，具有持久性、生物富集性、半挥发性和高毒性，可在沉积物、水体、土壤和尘埃以及生物体内广泛检出.目前对土壤中六溴环十二烷的分布及浓度的研究主要集中在电子废弃物拆解地等典型高浓度地，而对工业区、养殖区的研究相对较少.实验采用UPLC-MS/MS法检测工业区、养殖区土壤中六溴环十二烷异构体的分布，旨在探明六溴环十二烷在不同类型环境土壤中的浓度及异构体分布差异，以促进对环境中六溴环十二烷的生态危害性的有效评价.结果显示，六溴环十二烷具有较高的检出率(82.00 ...
CHENGXin(程鑫) +6 more
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Beyond Evidence: How Framing Shapes Public Health Policies During Health Crises
Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT Does the level of evidence that accompanies policy action depend on how a problem is framed, and on who frames it? This article examines these questions in the context of health crises. Bridging sociological and equivalence framing theories, it treats frames as preexisting interpretive schemes shared within communities of actors, whose ...
Antoine Claude Lemor, Eric Montpetit
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, 2010 围绕资源规模和供给能力,资源开发对经济的支撑力、人类对资源的可持续利用能力3个维度,构建基于资源开发利用的可持续发展模型,将可持续发展的程度分为可持续发展、基本可持续发展、基本不可持续发展、不可持续发展4个类型,并提出了评价模式与评价方法,通过指标体系对乌昌地区进行了实证分析,得出乌昌地区总体上处于可持续发展类型的结论。对以资源开发利用为支撑的区域未来发展方向进行了思考,认为优势资本转换是其可持续发展的最终途径,并从规范资源开发与利用的主体、发展循环经济、引导资源型产业郊区化 ...
杨宇, 雷军, 张小雷, 董雯
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Comprehensive assessment of ecological and environmental sustainability in Zhejiang province
浙江大学学报. 农业与生命科学版, 2004 人类的生存与发展和生态环境条件相互依存、相互制约，但粗放型经济增长方式与掠夺式资源开发将导致生态环境的人为破坏．因此合理利用自然资源，保护和建设好生态环境，实现生态环境的可持续发展，是我国建设发展过程中必须始终坚持的一项基本国策．本文从区域生态环境人手，建立了综合评价指标体系模型，并采用层次分析与模糊聚类分析相结合的方法，对浙江省生态环境的可持续发展能力进行了综合评价，以期为区域生态环境可持续发展能力的评价提供一种简单可行的方法．
ZHAO Xing-zheng +4 more
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Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT This paper examines how governments navigate policy legitimacy during crises through three distinct discursive processes: legitimization, delegitimization, and blame avoidance. Using a sequential mixed‐methods design, the study analyzes Denmark's decision to cull all mink during the COVID‐19 pandemic. The quantitative analysis of 947 newspaper
Olivier Rubin +3 more
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Shuitu Baochi Xuebao, 2003 论述了从生态、经济、社会3个方面评价小流域可持续发展的状况,提出了各自的影响指标。采用模糊综合评价计算评价指标值,根据可持续发展指标临界值所确定的不同阶段的划分标准,得出评价结果。并以黄家二岔小流域为例进行评价,得出的黄家二岔小流域基本上处于可持续发展的初级阶段。
胡晓静 齐实 等
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From the Margins: Potential Coalitions in Centralized, High‐Capacity States
Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT The early stages of coalition formation remain an understudied area, particularly in centralized, high‐capacity political systems. Examining actor dynamics at this formative stage can reveal how coalitions form and how limited pluralism constrains their development.
Sreeja Nair, Yuhao Ba, Mohnish Kedia
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Improving the efficiency and stability of oxygen evolution electrocatalysts remains essential for advancing water splitting technologies. Although in situ surface reconstruction into active phases is desirable, it often leads to uncontrolled structural degradation.
Beirong Ye +11 more
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Photocatalytic hydrogen peroxide (H2O2) production from water and oxygen driven by solar energy represents a highly promising green and sustainable strategy. Herein, lignin‐derived carbon quantum dots (LCDs) were strategically introduced at the heterojunction between a Bi‐based metal organic framework (Bi‐MOF) and ZnIn2S4 (ZIS).
Wanpeng Sun +8 more
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, 2009 在建立基于多层次、多指标评价方法的可持续发展系统的状态评价模型的基础上,对哈尔滨市的可持续发展系统各子系统的综合发展水平以及发展的持续度和协调度进行了计算和分析。分析表明:哈尔滨市在1995—2004年各子系统发展水平波动的幅度较大 ...
臧淑英, 周嘉
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