Results 61 to 70 of about 930 (111)
Tailoring Spin States of CuNNi3 via d‐d Orbital Coupling for High Performance Water Splitting
ABSTRACT Against the backdrop of escalating global energy crises and environmental challenges, the development of clean and sustainable hydrogen energy has become increasingly imperative. Hydrogen production via water electrolysis is widely regarded as a promising approach due to its green and efficient characteristics.
Weigao Zhong +6 more
wiley +1 more source
人工灌草复合植被是黄土高原植被恢复与重建的主要植被类型,在该区域水土保持中发挥着重要的作用。以定西市安定区为例,基于InVEST模型对该区人工灌草生态系统的水土保持功能进行定量化评估,以期为黄土高原丘陵区生态恢复与水土资源的可持续利用提供决策支撑。评估结果为:(1)人工灌草地单位面积的水源涵养量为369.25 m3/hm2,是草地的90.5%、林地的134%和耕地的110%;该区的水源涵养总量为3 970.99×104 m3,人工灌草地水源涵养量占该区总水源涵养量的29.9%。(2 ...
刘宥延, 刘兴元, 张博, 李妙莹
doaj
为探讨工程堆积体不同植被类型的枯落物特征、枯落物持水及拦蓄能力、土壤物理性状和土壤涵水性能,采用室内浸水法和环刀法分别对工程堆积体植被与原生植被的枯落物及0—20 cm土层的持水能力进行研究。结果表明:(1)不同植被类型枯落物厚度及蓄积量均存在显著差异(P灌木林>乔木林。(3)各植被类型土壤最大持水量及毛管持水量均存在显著差异(P灌木林>乔木林。从堆积体枯落物和土壤持水能力角度来看,草灌混交这一搭配模式可以作为工程堆积体的先锋植被,用于在堆积体初期构建稳定群落生态结构 ...
丁鹏玮 +3 more
doaj
Factors That Influenced Coping With COVID‐19 During the Pandemic in Botswana
ABSTRACT This paper forms part of the broader Global South study, Personal and Family Coping with COVID‐19 in the Global South, which examines psychosocial and behavioral responses to the COVID‐19 pandemic. In Sub‐Saharan Africa, the pandemic posed significant psychological, social, and economic challenges, with important implications for preparedness ...
Magen Mhaka‐Mutepfa +3 more
wiley +1 more source
通过测定国家重点野外科学观测试验站———祁连山森林生态站排露沟流域土壤水分物理性质,研究其水文效应表明:(1)亚高山灌丛草甸土持水能力最强、通气状况良好,山地森林灰褐土持水能力次之、通气状况最好,山地栗钙土持水能力较差、通气不良;(2)土壤水文效应随深度而变化,变化幅度亚高山灌丛草甸土>山地森林灰褐土>山地栗钙土;(3)单位土壤水文效应亚高山灌丛草甸土>山地森林灰褐土>山地栗钙土;(4)土壤水文效应大小除受本身的性质决定外,还受其厚度影响 ...
王金叶 田大伦 王彦辉 王顺利 张学龙 葛双兰
doaj +2 more sources
为了探究夏尔希里自然保护区不同植被类型土壤水源涵养功能特征,在保护区内选取具有代表性的草地、灌木、森林样地共13个,以不同植被类型的土壤为试验材料,采用野外调查与室内试验相结合的方法,分别对保护区内的草地区、灌木区、森林区的土壤水源涵养能力进行定量分析。结果表明:(1)随着土层深度的增加,研究区草地土壤容重逐渐增大,在土壤层0—10 cm处出现最小值为0.69 g/cm3。草地土壤持水能力和蓄水能力变化规律一致,均表现为0—10 cm > 10—20 cm > 20—30 cm。(2)随着土层深度的增加,
刘西刚, 王勇辉, 焦黎
doaj
Effect of L-Arginine or L-Lysine on the Quality of Duck Meat Patties during Freeze-thaw Cycles [PDF]
In this study, the effects of L-arginine or L-lysine on the quality of duck meat patties during repeated freeze-thaw cycles were studied to provide a theoretical basis for the application of L-arginine or L-lysine as cryoprotectant in meat products.
Mengmeng LI, Shufeng HE, Yangying SUN
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ABSTRACT The poor Zn chemistry of Zn metal anode and sluggish reaction kinetics of cathodes at high mass loadings are two crucial issues for hindering the application of aqueous Zn‐ion batteries (AZIBs). Herein, the hierarchical porous N‐doped carbon fibers (HPNCFs) were proposed to simultaneously optimize the reversibility of Zn plating/stripping of ...
Song Yang +6 more
wiley +1 more source
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
wiley +1 more source
为了研究托木尔峰自然保护区生态系统的水源涵养功能,选择台兰河上游为研究区域,采用野外观察与室内试验相结合的方法,分别对该区域具有代表性的雪岭云杉林、灌木林、草地植被,从林冠层、枯枝落叶层和土壤层3个层次及综合性的水源涵养能力进行了定量分析。结果表明:研究区云杉林林冠截留能力优于灌木林,穿透降雨量及林冠截留量平均值均大于灌木林。除草地外,各样地枯枝落叶未分解层平均厚度均大于半分解层,云杉林枯枝落叶层的厚度和蓄积量明显大于灌木林,不同植被类型枯枝落叶半分解层的自然持水率、最大持水率均高于未分解层 ...
马国飞 +2 more
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