Results 101 to 110 of about 1,026,823 (242)
Behavioral interventions to reduce demand for threatened freshwater turtles as pets
Conservation Biology, EarlyView.Abstract Growing demand for freshwater turtles as pets has fueled illegal trade and accelerated wild population declines, underscoring the need for theory‐based demand‐reduction interventions. We conducted a three‐part randomized controlled trial with active turtle keepers (n = 1800) in China to test conservation‐ and legality‐framed messages by ...
Wuji Zheng +9 more
wiley +1 more source
He jishu氢能作为能够与核能高效耦合、优势互补的重要储能形式，在多能互补系统中具备突出的应用潜力与发展价值。针对风机与光伏发电出力波动性和间歇性及多能互补系统中各单元运行难以协调控制的问题，构建了基于可逆固体氧化物电池（Reversible Solid Oxide Cells，RSOC）的风光氢储一体化系统，依托MATLAB/Simulink平台搭建了光伏、风机、RSOC与蓄电池等核心单元的数学模型，并结合各单元运行特性设计了不同的控制策略。基于实测风速与光辐照度数据开展仿真分析 ...
钱 昕瑶 +5 more
doaj +1 more source
, 2008 一种用于芳烃与低碳烷烃烷基化反应的催化剂，含有Mo元素和 ZSM-5分子筛，其中Mo元素与ZSM-5分子筛的重量比为1～16％。催化剂中添加有重量比5-40％的粘结剂。上述催化剂在芳烃与低碳烷烃烷基化反应中的应用，反应温度为250～450℃；进料芳烃与低碳烷烃的摩尔比为 0.5-3，重量空速为0.2-5h-1。本发明的催化剂应用于苯和丙烷的烷基化反应时，可高选择性地生成甲苯、乙苯、异丙苯和正丙苯 ...
朱书魁 +3 more
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Modeling seed germination data to meet biodiversity conservation needs in the Mediterranean
Conservation Biology, EarlyView.Workflow to assess the availability and quality of germination data and assign species' thermal risk in the Mediterranean. (a) Assessment of data availability, including the phylogenetic distribution of the number of records (i.e. available germination data); (b) data quality assessment; and (c) assignment of climate risk categories for species that ...
Diana María Cruz‐Tejada +2 more
wiley +1 more source
He jishu在第四代先进反应堆钍基熔盐堆（Thorium Molten Salt Reactor，TMSR）中，高温含缺陷构件的寿命预测是结构完整性评估的重要环节。在该研究中，首先基于随时间变化的蠕变断裂力学，采用有限元分析（Finite Element Analysis，FEA）软件的围线积分方法计算蠕变断裂参量C*，结合Python语言编写的自动化分析程序，预测了GH3535合金紧凑拉伸试样C（T）的蠕变裂纹扩展（Creep Crack Propagation，CCP ...
王 雯, 王 晓艳, 李 志军
doaj +1 more source
, 2000 介绍了虚拟现实模型语言 (VRML ,VirtualRealityModelingLanguage)及其在全球信息网 (WWW ,WorldWideWeb)上分子模型中的应用 ,并介绍了我们开发的把表征分子三维结构的MOL2或ML2格式文件转换为 4种显示模式 (线型、棍型、球棍型和空间充满型 )VRML格式文件的软件。最后 ,给出了一个应用实例。结果表明 ...
何敏, 周家驹, 谢桂荣
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A Systematic Scoping Review of Self‐Regulated Learning With AI in Language Education
International Journal of Applied Linguistics, EarlyView.ABSTRACT The rapid development of artificial intelligence (AI) technology has brought new opportunities for second/foreign language (L2) education while also raising concerns about the use of AI tools. This systematic scoping review provides a snapshot of the current state of research situated at the intersection of self‐regulated learning (SRL) and AI
Zheng Zhang, Sihan Zhou, Barry Bai
wiley +1 more source
, 2002 一种用于氧化反应的反应控制相转移催化剂及其氧化反应过程，包括杂多酸类QmHnXMpO4+3p和络合物类QmMO3(L)化合物；在反应中催化剂本身不溶于反应介质中，但在反应物之一的作用下，能够形成可溶于反应介质中的活性物种，进而与另一反应物作用，使其选择性地反应，而当反应物之一被消耗完，催化剂即恢复到起始的结构便从反应体系中析出。本发明催化剂的分离和多相催化剂相似，而在反应过程中则完全体现出匀相催化剂的特点，能够满足技术经济的要求，是适合大规模工业应用的新型催化剂 ...
周宁, 李坤兰, 奚祖威, 孙渝
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Although the use of AI technologies (e.g., chatbots and automated writing evaluations (AWE)) has gained considerable attention in language learning fields in recent years, how AI technologies have been designed and implemented in language learning education, as well as their effectiveness, is understudied.
Shen Qiao +2 more
wiley +1 more source
, 2018 无机非金属氮化碳材料由于电子结构独特、不含金属、化学性质稳定且具有一定的可见光响应等,在能源和材料领域的地位日益突出,具有越来越广阔的研究和应用前景。基于氮化碳材料的二维层状结构和性质特征及其相关应用,本文采用密度泛函理论超软赝势方法,对氮化碳前驱体(melon)、氮氢缺陷前驱体以及石墨相氮化碳(g-C3N4)晶体及其表面结构、能带以及功函数等进行了研究,分析了二维氮化碳材料的物化性质与微观结构的关系。结果表明:Melon为直接带隙半导体,随着结构中氢键的减少 ...
韩清珍, 温浩
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