Results 41 to 50 of about 859 (116)
Adaptability of Governance Structures and Processes for Sustainable Livestock in Jalisco, Mexico
Review of Policy Research, Volume 43, Issue 2, March 2026.ABSTRACT Global increases in meat production have intensified interest in alternative livestock systems that can address environmental, social, and economic challenges. Transitioning toward sustainable livestock (SL) systems requires adaptive governance arrangements that integrate local knowledge into broader policy design.
Jovanka Špirić
wiley +1 more source
Shuitu Baochi Xuebao, 2017 为探究茵陈蒿群落不同垂直结构对产流、产沙过程的影响，利用人工模拟降雨试验的方法，研究了不同垂直结构的茵陈蒿群落坡面侵蚀过程。结果表明：在植被盖度相同条件下，茵陈蒿多层群落结构（茵陈蒿+狗尾草+生物结皮）和双层群落结构（茵陈蒿+生物结皮）的减流、减沙效果显著优于单层群落结构，二者的减流效益分别为40.5%和22.6%，减沙效益分别为86.6%和73.5%。不同垂直结构的茵陈蒿群落累积产沙量均可表示为累积产流量的幂函数（R2＞0.98），表现为累积产沙量随累积产流量的增加而增加，且随群落结构层数的增加 ...
李盼盼, 王, 刘国彬, 李文达
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu +8 more
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Shuitu Baochi Xuebao, 2023 植被具有良好的水土保持效益,深入了解覆被结构特征与产流产沙关系是研究植被防蚀功能的基础。以鄂中地区典型森林植被为对象,通过人工模拟降雨试验研究5种覆被结构(灌木、草本、枯落物、灌木+草本、灌木+草本+枯落物)和侵蚀性降雨(60,90,120 mm/h)对坡面侵蚀产沙过程的影响。结果表明:(1)坡面产流率、产沙率随降雨时间先迅速增大,后缓慢增大,最后达到稳定趋势。降雨强度是坡面侵蚀产沙的主导因素,与产流时间、产流率和产沙率呈显著正相关关系(p＜0.01)。(2)在有/无枯落物存在的情况下,植被覆盖度 ...
朱方方 +3 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2008 通过田间试验研究了返青期不同程度根修剪处理对冬小麦群体结构、土壤水分及产量形成的影响.结果表明,不同程度根修剪处理均减少了小麦的群体数量,改善了群体结构,从而使得根修剪处理花期时的透光率显著大于对照.根修剪处理还使小麦对土壤水分的消耗显著减少,花期时根修剪处理小区的土壤含水量均显著高于对照.土壤水分的改善促进了小麦的生理活性,使根修剪处理小麦的花期光合速率均显著大于对照.成熟期时小剪根处理对籽粒产量没有显著影响,但由于显著减少了水分消耗,因此,提高了小麦的水分利用效率 ...
马守臣 +4 more
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Study on side reactions of thymol hydrogenation(百里香酚合成薄荷醇副反应研究)
Zhejiang Daxue xuebao. Lixue ban, 2014 l-薄荷醇是世界上销量最大的香料之一，其生产方法主要以百里香酚为原料，先加氢生成薄荷醇8种异构体，再拆分得到l-薄荷醇.现有文献未对百里香酚催化加氢副反应进行深入研究.为加深对百里香酚加氢反应脉络的理解，本实验以雷尼镍为催化剂，观察其在高压反应釜中进行百里香酚合成薄荷醇的副反应，以气质联用方法(GC-MS)鉴定了副产物结构.并采用量子化学方法研究了副反应机理，对不同副产物生成的可能性大小进行比较.
WANGLing(王铃) +3 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Chlorination roasting has emerged as a promising pyrometallurgical strategy for the selective recovery of lithium from spent lithium‐ion batteries (LIBs). In this study, a natural roasting agent, seawater‐derived chlorides, was employed to selectively extract lithium from spent LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode. MgCl2·6H2O, a main component
Bei‐Lei Zhang +7 more
wiley +1 more source
Gaoya dianqi, 2020 为了满足经济高质量发展的需求,中国电网正由高速发展向高质量发展转型,对构成电网基础的高压电器设备质量提出了更高的要求。绝大多数高压电器产品均通过了型式试验验证,但在实际电网运行中,供货产品与型式试验样机关键件不一致且所更换的关键件性能质量不满足要求是造成运行事故的原因之一。产品认证是国际通行的质量控制手段,用于对供货产品质量满足标准或规范要求提供第三方证明,但目前尚未在高压电器产品领域普及。文中从产品认证角度,分析和探讨如何在高压电器产品制造行业引入产品认证技术,并利用层次分析法（AHP ...
贾一凡 +5 more
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Shuitu Baochi Xuebao, 2022 为解决水稻生产过度依赖化肥及其环境和高效利用问题,探讨贵州黄壤稻田科学施用生物炭。在贵州省思南县典型黄壤稻田开展氮肥不减量(T0)和氮肥减10%施2.5 t/hm2(T1),氮肥减20%施5.0 t/hm2(T2),氮肥减30%施7.5 t/hm2(T3),氮肥减40%施10.0 t/hm2生物炭(T4)和不施肥对照(CK)共6个处理3次重复田间小区随机区组试验,研究了氮肥减量施生物炭对水稻产量、产量构成和氮磷钾养分吸收利用的影响。结果表明,氮肥减量施生物炭显著影响贵州黄壤稻田水稻产量、产量构成 ...
段建军 +7 more
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