Results 41 to 50 of about 3,011 (169)
Study on the System of Usufructuary Right Guaranty [PDF]
, 2010 用益物权作为重要的财产权利，是现代市场经济资本流通的重要因素。在用益物权上设立担保能够充分发挥物的效用，有利于促进资本的融通和经济的活跃。用益物权担保的模式，即是采用抵押还是质押，理论上有分歧，实践中存在不同作法。学界对用益物权担保的相关制度也缺乏系统性研究。 本文探讨了用益物权担保制度的相关理论和法律概念，针对我国实践中几种用益物权担保存在的问题进行较为深入的剖析，探讨了物权法的发展趋势和我国在用益物权担保制度模式上的选择问题，并分析总结了我国在用益物权担保方面的理论研究和立法情况。最后 ...
叶小培
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Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva +9 more
wiley +1 more source
, 2002 《宪法》、《组织法》、《立法法》当中都有规定,制定行政法规和规章要根据其上位法,制定 地方性法规不得与其上位法相抵触。这规定看似简单,但在实际当中却很难操作,人们也往往会把二者混淆。明确认识这两大立法关系,对完善我国行政立法系统和地方性法规的立法系统,提高我国依法治国的水平有着重要的意义。本文试对“根据”与“不抵触”这两大立法关系的内涵及其表现和相关问题作一次具体阐述,并在最后对二者进行一些认识性的比较 ...
叶世治
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Success of restoration strategies in preventing extirpation of 2 critically endangered coral species
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract An unprecedented marine heatwave in 2023 caused widespread coral bleaching and mortality throughout the Caribbean. In the Florida Keys (USA), 2 foundation species, elkhorn coral (Acropora palmata) and staghorn coral (Acropora cervicornis), were severely affected.
Erinn M. Muller +29 more
wiley +1 more source
福尔马林固定白鱀豚标本DNA提取及其遗传多样性的初步研究 [PDF]
, 2005 福尔马林固定标本是宝贵的遗传资源,但是如何有效利用其中的遗传信息一直存在问题。本文尝试从标本预处理、消化、PCR扩增各方面综合考虑和优化改进,成功提取并扩增21头福尔马林固定白豚标本线粒体DNA控制区410bp片段。采用了3种预处理方法尽量去除固定标本中残存的甲醛,从试验结果来看,从酒精梯度+临界点干燥处理的标本中提取的DNA在扩增时具有明显优势。通过蛋白酶K消化过程中对于酶的浓度、温浴时间的比较试验,发现随着采用大幅提高酶浓度、延长消化时间等高强度的蛋白酶消化操作后 ...
许黎美,万秋红,王丁
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Hobbyist preferences for pet freshwater turtles
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao +7 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Consumer demand for ivory perpetuates the unsustainable and illegal killing of African elephants and other wildlife species. Interventions that aim to change consumer behavior are increasingly recognized as a crucial element of demand management. However, poor design and implementation have limited their effectiveness.
Molly R. C. Brown +2 more
wiley +1 more source
野生动物学报, 2010 截止到2010年1月,中国野生动物保护协会先后命名2批全国野生动物保护科普教育基地70个,推荐到中国科协命名的全国野生动物保护科普教育基地4个。2009年7月中国野生动物保护协会印发调查表,对命名的全国野生动物保护科普教育基地的科普工作状况进行调查。本论文以调查数据为依据,从这些野生动物保护科普教育基地的地区分布和类型、管理属性情况、科普活动情况进行了汇总与分析,提出了关于加强全国野生动物保护科普教育基地科普工作的建议。
郭立新 +4 more
doaj
Study on the regulation of large scale ecological tort [PDF]
, 2016 生态破坏突发事件或积累性的生态破坏行为不仅给生活于生态系统中的人们带来了巨大的人身损害以及财产损失，还给生态环境带来了巨大的损害。生态侵权课题具有广泛的实际运用前景和深入的科学研究价值，但截止目前，国内外学者对此类问题的研究尚处于起步阶段。笔者在前言中通过结合几则案例，引出本文主题，并分为三章来探讨生态侵权理论基本框架的构建，以期为未来该理论的发展提供参考依据和理论基础。 第一章是大规模生态侵权的理论概述。这一章主要探讨大规模生态侵权的概念及特征，分析大规模生态侵权产生的原因，同时通过比较 ...
林娜
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Automating the analysis of public saliency and attitudes toward biodiversity from digital media
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Measuring public attitudes toward wildlife provides crucial insights into human relationships with nature and helps monitor progress toward Global Biodiversity Framework targets. Yet, conducting such assessments at a global scale presents challenges.
Noah Giebink +8 more
wiley +1 more source