Results 21 to 30 of about 11,049 (170)
野生动物学报, 2023 为有针对性地制定朱鹮（Nipponia nippon）保护计划，促进朱鹮再引入，壮大野外种群规模，2014—2019年7—11月，对河南董寨再引入朱鹮的35个巢址及其周边 3 m×3 m样方的22个生境特征进行观察、测量和记录。结果表明：大多数巢筑于针阔混交林（n=23）和针叶林（n=10）。在野化放飞初期，朱鹮对营巢树种选择相对多样，但后期对大别山低山区马尾松（Pinus massoniana）显现明显的偏好（n=27，占81.8%）。筑巢树的平均胸径（35.53±9.82）cm，平均高度 ...
朱家贵 +6 more
doaj
全球能源互联网, 2020 综合能源系统（integrated energy system，IES）可以满足园区冷、热、电等多种能源互补的需求，实现多能耦合，进一步提升能源的利用效率。但伴随光伏和风电等可再生能源发电设备的广泛接入，其不确定性和间歇性使得综合能源系统供给灵活性降低、运行风险增大，不能有效提升可再生能源的使用效率。以系统运行成本、碳排放惩罚成本最小为目标，分析了冷热电联供对系统运行效率的影响，同时引入模糊C均值-聚类综合质量法（FCM-CCQ）对风电及光伏的出力场景进行聚类分析，运用条件风险价值 ...
张萌萌, 董军
doaj +1 more source
Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
wiley +1 more source
Achieving Transboundary Water Security Through Water Innovations: A Framework and Cases
World Water Policy, Volume 12, Issue 1, February 2026.ABSTRACT Alternative sources of freshwater, provided by various innovations, have long been available to countries facing acute water stress. We hypothesize that avoiding and/or resolving conflict with neighbors—caused by the uncertainty of continued access to shared surface water and groundwater sources—is another driver of innovation adoption ...
David Lewis Feldman
wiley +1 more source
World Affairs, Volume 189, Issue 1, Spring 2026.ABSTRACT In the study, we investigate the roles energy price inflation and its volatility play in shaping foreign direct investment (FDI) inflow into Sub‐Saharan Africa (SSA). Applying data from 37 SSA economies between 2002 and 2023 and the system generalized method of moments (GMM) as the estimation strategy to account for endogeneity, the results ...
Chimere O. Iheonu +2 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2007 尝试在深度方向引入PML（完美的匹配层）选取适当的非线性局部坐标正交变换及方程变换，将Helmholtz方程uxx+uzx+k2(x，z)u = 0变换为，然后再选取非对称Rayleigh商迭代算法来求解Helmholtz方程的特征问题，即求解的特征值和特征函数.数值模拟表明，此方法是可行的，并可以大大改善数值求解的效率.
WANGDan-xi(王丹溪) +1 more
doaj +1 more source
Integrative Conservation, Volume 4, Issue 2, Page 246-253, June 2025.After the great Chinese poet Qu Yuan (屈原) was exiled to Xupu (溆浦) county in Hu' nan province, he described the forest there as follows: “mysterious is the deep forest, the place where Yuán yòu dwell (深林杳以冥冥兮,乃猿狖之所居).” What is the referent of the name Yuán yòu in this sentence?
Kefeng Niu
wiley +1 more source
Orphan crops of archaeology‐based crop history research
PLANTS, PEOPLE, PLANET, Volume 7, Issue 3, Page 562-589, May 2025.Agrobiodiversity is central to sustainable farming worldwide. Cultivation, conservation and reintroduction of diverse plant species, including ‘forgotten’ and ‘underutilized’ crops, contribute to global agrobiodiversity, living ecosystems and sustainable food production.
Daniel Fuks +23 more
wiley +1 more source
野生动物学报, 2013 再引入工程就是通过向野外释放笼养个体尝试建立濒危物种可自我维持的野生种群。我们报道了2008～2011年陕西宁陕县朱鹦再引入种群存活现状。从2007年5月～2011年10月,共有56只笼养朱鹦个体（27♀,29♂）被相继释放到野外。目前已形成10个繁殖配对,并成功出飞幼鸟33只。平均窝卵数3.14±1.06,每窝平均育成幼鸟1.57±1.03。我们认为饥饿和王锦蛇的捕食是朱鹦幼体、成体死亡的主要原因。最后提出了再引入过程存在的问题和相应的保护建议。
陈文贵 +4 more
doaj