Results 81 to 90 of about 8,037 (116)
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT Household food expenditure continues to be a key factor in ensuring the realization of the Human Right to Adequate Food. Particularly in Brazil, access to food can be limited by economic constraints in vulnerable families, especially among farming families, who have been more vulnerable to food insecurity in recent years in the country.
Lucas de Almeida Moura +3 more
wiley +1 more source
野生动物学报, 2012 陕西牛背梁国家级自然保护区是中国目前唯一以羚牛及其栖息地为主要保护对象的森林和野生动物类型自然保护区。调查表明,保护区内分布有羚牛206～224头,呈片段化分布在6个生境斑块内,以210国道为界,保护区内羚牛的分布格局为西多东少。虽然保护区内羚牛种群数量和分布区均呈缓慢增长的趋势,但频繁的人为干扰,尤其是保护区内公路、铁路建设和由此导致的生境分割,仍威胁着保护区内羚牛种群的持续生存。
邵建斌 +5 more
doaj
Toward a Concept of ASEAN Autonomy: Actors, Entities, and Regional Space
Asian Politics &Policy, Volume 18, Issue 4, October 2026.ABSTRACT Widely discussed across disciplines, autonomy is often used in ASEAN studies to describe what actors associated with ASEAN seek. Yet its meaning remains underspecified and differs from dominant approaches of international organization autonomy.
Riko Watanabe
wiley +1 more source
野生动物学报, 2003 小五台山国家级自然保护区主要保护对象是珍禽褐马鸡和温带森林生态系统的多样性。自1983年建区以来,坚持贯彻“加强资源保护,积极繁殖培植,合理开发利用”的基本方针,按照“一保护,二科研,三发展”的总体思路,在省林业局的大力支持下,开展了大量艰苦而卓越有成效的保护和科研工作,最大限度地保护了区域生物多样性的完整性。目前,初步摸清了保护区的“本底”资源,科研工作逐步得到加强 ...
郭书彬 +3 more
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World Medical &Health Policy, Volume 18, Issue 3, September 2026.ABSTRACT Confrontational violence still puts catastrophic burdens on children, with 2024 being the highest recorded levels of displacement, malnutrition, injury, and deprivation in contemporary humanitarian history. Children's surgical care is still grossly underrepresented in health responses worldwide in the prevention of avoidable deaths and long ...
Gaurav Chanderprakash Mittal +4 more
wiley +1 more source
Gaoya dianqi, 2012 笔者分析了天广直流控制保护系统改造完成后发生的3次双极线路保护动作事件,剖析其中直流线路突变量保护误动作的原因。根据天生桥换流站和广州换流站的实际录波和实际过程,结合厂家给出的突变量保护定值和整定思想,分析导致突变量保护误动作的因素。笔者给出了2个解决方案——降低低电压保护定值和增大突变量保护的动作延时,并经实践验证正确,为以后更好地实施直流控制保护系统国产化改造提供参考。
田庆
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Disrupted Skies: How Offshore Wind Farms Alter Flight Behavior of Breeding Seabirds
Ecology and Evolution, Volume 16, Issue 8, August 2026.Using high‐resolution 1‐s tracking bursts collected every hour, we quantified within‐trajectory flight behavior of breeding Bridled Terns near offshore wind farms. Birds showed increased mean redirection and lower flight altitude when trajectories were more closely aligned with turbine directions from the colony, suggesting localized, direction ...
Waner Liang +8 more
wiley +1 more source
Guangtongxin yanjiu, 2002 共享保护方式是一种有效而又经济的保护方式 .文章讨论了三种共享保护方式及各自的特点 .使用交换光纤 （ OSF）的共享保护方式利用 IP网络控制器来实现 ,主要应用于环形网络拓扑 ;利用 OXC的共享保护方式基于多协议标记交换 （ MPLS）控制平面 ,可以用于任何网络拓扑结构 ;通过合理的逻辑拓扑而实现的共享保护则用于保护 SONET/WDM和 IP ...
姜希军, 隋志成, 吴志坚
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Intangible drivers of tolerance shape human–elephant coexistence in Southwest China
People and Nature, Volume 8, Issue 8, Page 2763-2780, August 2026.Abstract Southwest China is home to a small but rapidly expanding population of Asian elephants (Elephas maximus), whose growth has intensified conflicts with people living in shared landscapes. These conflicts result in substantial economic losses and occasional human casualties. This coexistence paradox—where conservation success leads to significant
Xiaoyu Yu +4 more
wiley +1 more source
Dianci bileiqi, 2016 电涌保护器被广泛应用于低压交流电源系统,用来抑制雷电暂态过电压从而有效保护低压电子设备。但因传统电涌保护器中元器件数量较多、体积较大等缺点,在分析传统电涌保护器的同时对其进行简化,进而提出了一种简化的电路模型。采用电磁暂态仿真软件PSCAD/EMTDC分别对传统的和简化的电涌保护器电路进行雷电暂态响应仿真分析,并对比其仿真结果。此外,组装了两种电涌保护器并实测了保护器的雷电暂态响应。试验和仿真结果表明简化电路也具有较好的保护性能,可取代传统的电涌保护器。
刘惠萍, 张小青, 王鑫
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