Results 131 to 140 of about 107,409 (290)
A cupriferrous zincblende from the Laloki stratabound massive sulphide deposit of Papua New Guinea [PDF]
, 2000 Thesis (Ph. D. in Science)--University of Tsukuba, (A), no. 2322, 2000.3.24Includes bibliographical references (p.
Kulange John Banda
core
Review of Policy Research, EarlyView.ABSTRACT We trace the shift from a nascent to a mature policy subsystem by examining a hitherto overlooked aspect in policy process scholarship: the relationship between advocacy coalition beliefs and the narratives they express over time. The empirical focus of this case study is Sweden's Preventing and Countering Violent Extremism (P/CVE) policies ...
Simone Grännsjö +3 more
wiley +1 more source
Review of Policy Research, EarlyView.ABSTRACT This study adopts a policy‐centric perspective to explore the complex relationship between sustainable nitrogen management (SNM) and the health risks associated with unsafe drinking water. The critical policy challenge lies in balancing the essential role of nitrogen fertilizers in achieving high agricultural productivity with their ...
Mingean Park +3 more
wiley +1 more source
Study on the Distribution and Habitat Selection of Two Burrowing Crabs in response to Spartina alterniflora Invasion in Mangroves of Zhangjiang Estuary, China [PDF]
, 2017 蟹类是红树林湿地底栖动物中的优势类群，多数种类具有掘穴行为，对潮间带生态系统扰动最为深刻。互花米草入侵中国东南沿海红树林，已迅速改变潮间带植被分布格局，并导致了蟹类的群落结构和生态系统功能发生变化。本论文选择福建漳江口“红树林——互花米草生态交错带”，通过陷阱法，监测红树林、互花米草丛和光滩3种生境中褶痕拟相手蟹和长足长方蟹这两种优势种的时空动态；采用野外控制实验和室内饲喂实验等方法，辨析决定蟹类生境选择的生物和非生物因素，阐明蟹类和互花米草相互作用的特征、变化过程及其对环境变化的响应机制 ...
孟寒玉
core
野生动物学报, 1999 由于世界人口激增,加速了对自然资源的开发和对环境的破坏,当今人类已陷于粮食短缺、资源匮乏、生态失调、环境恶化的四面楚歌之中.而生物多样性丧失、全球气候变化及持续生态系统更被列为本世纪后期生态学和环境学的热点议题.对生物多样性价值的认识也不断深入.
张杰, 张华
doaj
Review of Policy Research, EarlyView.ABSTRACT This paper provides a retrospective on California's oversight of 1,3‐dichloropropene (1,3‐D). It utilizes archival documents, including internal memos, emails, and risk assessments, to demonstrate how the state's Department of Pesticide Regulation consistently expanded allowable 1,3‐D use while presenting each policy change as scientifically ...
Kaitlyn Alvarez Noli
wiley +1 more source