Results 31 to 40 of about 13,430 (151)
Gaoya dianqi, 2011 风能作为可再生的绿色能源,将成为以分布式发电为特征的智能电网的重要组成部分。然而现有电力系统抗风电扰动能力差是影响风电产业发展的关键性制约。采用分频输电技术可解决上述风电并网问题,而分频输电会造成断路器开断短路电流时有较长的燃弧时间,从而引起断路器的开断能力降低。笔者综述了分频输电对真空断路器开断能力的影响。Slade研究指出当系统频率降低时,真空断路器的短路电流开断能力的降低与频率降低倍数的平方根有关,即ix（f1）/ix（f2）=（f1/f2）～（1/2）。对于采用横向磁场触头,触头直径为62 ...
刘志远
doaj
A Difficult Start for the UK Labour Government, But Time Is Still on Their Side
World Affairs, Volume 188, Issue 3, Fall 2025.ABSTRACT The newly elected Labour Government in the United Kingdom promised change. However, the first 10 months have been disappointing, characterized by misjudged announcements regarding the Winter Fuel Allowance and Employers' National Insurance contributions. Yet, there is still time to get back on track with welfare reform and create a new welfare
Hefin Gwilym +4 more
wiley +1 more source
Effectiveness of protected areas in the Caucasus Mountains in preventing rangeland degradation
Conservation Biology, Volume 39, Issue 3, June 2025.Abstract As land use intensifies globally, it increasingly exerts pressure on protected areas. Despite open, nonforested landscapes comprising up to 40% of protected areas globally, assessments have predominately focused on forests, overlooking the major pressures on rangelands from livestock overgrazing and land conversion.
Arash Ghoddousi +12 more
wiley +1 more source
Including the urbanization gradient in people‐centered wildlife conservation in Amazonia
Conservation Biology, Volume 39, Issue 3, June 2025.Abstract Conservation policy in the Amazon traditionally focuses on rural areas, overlooking the socioecological roles of urban populations. This oversight can hinder sustainability by neglecting rural–urban connections. We compared the prevalence and quantity of wild meat consumed, bartered, and traded commercially in rural, peri‐urban, and urban ...
Lísley P. Lemos +3 more
wiley +1 more source
China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Antipode, Volume 57, Issue 3, Page 830-861, May 2025.Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source
Social science integration at state and federal fish and wildlife organizations in the United States
Conservation Biology, Volume 39, Issue 2, April 2025.Abstract Increasingly, conservation professionals and scholars recognize the need for more holistic integration of social science in fish and wildlife management. This call is often framed around the complexity of 21st century conservation challenges and changing societal values toward fish and wildlife and its management.
Michael R. Quartuch +7 more
wiley +1 more source
Gaoya dianqi, 1997 阐述了超高压SF6断路器现代化设计的必要性。在灭弧室全场域数值分析基础上,对SF6压气式断路器的三种开断过程:即开断小电容性电流后的介质恢复强度、端子短路故障开断能力及近区短路故障开断能力进行了数值分析。
王其平
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World Medical &Health Policy, Volume 17, Issue 1, Page 129-148, March 2025.Abstract Patients with kidney failure need dialysis or a kidney transplant to survive. Living donor kidney transplantation (LDKT) is the best therapeutic option, yet global rates of LDKT have minimally increased, and there are disparities in access. The need for a systems approach to improvement has been highlighted.
Anna Horton +7 more
wiley +1 more source
The Neo‐Mercantilist Nexus: China's Geoeconomics Strategy in the Middle East—Discourse and Practice
Digest of Middle East Studies, Volume 34, Issue 2, Spring 2025.ABSTRACT China's Belt and Road Initiative (BRI) has become a cornerstone of its hybrid neo‐mercantilist geoeconomics strategy, reshaping the Middle East's geopolitical and economic landscape. This research explores how the BRI enables China to secure energy resources, expand trade networks, and establish strategic infrastructure, thereby advancing its ...
Riya Sultana, Ronen A. Cohen
wiley +1 more source
Gaoya dianqi, 1982 《高压电器》一书的基本内容为:电力系统的开断与关合过程;各种高压断路器（油断路器、压缩空气断路器、SF6断路器、真空断路器）的结构、工作原理、性能分析及部分设计的计算;其他高压电器（熔断器、隔离开关、接地开关、负荷开关、互感器、组合电器等）的介绍 ...
刘绍峻
doaj