Results 31 to 40 of about 17,023 (115)
Dehydrogenation Thermodynamic and Kinetic Challenges of Mg‐Ni‐Based Alloy Hydrides
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Solid‐state hydrogen storage stands as a pivotal, safe, and efficient solution for the future hydrogen economy. Among diverse hydrogen storage systems, Mg‐Ni‐based alloy hydrides are recognized as cornerstone materials. However, their practical application is hindered by two core challenges: the high thermodynamic stability of the hydride ...
Jinglan He +6 more
wiley +1 more source
Methods in Ecology and Evolution, Volume 17, Issue 6, Page 1896-1909, June 2026.Abstract Molecular identification of insect food webs can accurately reveal complex trophic interactions and serve as a foundation for understanding ecosystem functioning and advancing biodiversity conservation. This process typically involves DNA library construction, high‐throughput sequencing and subsequent steps, including data assembly, annotation,
Xiao‐man Zhang +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2001 湿地土壤养分是时空连续的变异体,不论尺度大小均具有高度的空间异质性.湿地土壤养分变量属于区域化变量,同时具有随机性和结构性,仅运用经典的Fister统计方法已经不能满足土壤空间异质性研究的需要.地统计学是近几十年发展起来的一门新的空间分析方法,其变异函数则适合于定量研究区域化变量空间结构变异特征,能够全面反映区域化变量的结构性.作者在前人的工作基础上意欲用地统计学的区域化变量理论和变异函数对湿地土壤养分的空间异质性进行定量研究,并对其研究方法进行了构想.＃
白军红 余国营 张玉霞
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Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source
四川大学学报. 自然科学版, 2003 作者设计和分析了计算机教学管理(CMI)系统.结果表明,CMI系统符合AICC标准,能满足不同工具开发的课程,可以在相同的CMI系统上运行;课程可以从一个CMI系统方便地移动到另一个系统(课程互换/互用);教学者可以使用他们喜欢的CMI工具修改或扩充课程;来自不同CMI系统的学生数据可以使用各种分析工具进行分析等需求.
周忠丽, 张卫华, 陈鹏, 游志胜
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Scenarios and strategies for future‐proofing ecosystem management under climatic novelty
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Climate change is driving unprecedented declines in dominant, habitat‐forming foundation species across marine and terrestrial ecosystems globally. As climatic novelty becomes the norm, ecosystem reassembly will become increasingly common. Predicting and understanding these transitions, and their implications for future ecosystem functioning ...
Lauren T. Toth +14 more
wiley +1 more source
Shuitu Baochi Xuebao, 2011 在丹江鹦鹉沟小流域利用典型样地取样法,进行土样采集,共选取78样点,测定土壤4个不同深度的养分含量。应用传统统计学和地统计学的方法,对不同深度土壤总氮含量进行了分析。结果表明:土壤总氮含量均值、最大值和最小值均表现为A1>A2>A3>A4,随土壤深度的增加而降低。经Kriging插值分析,由A1到A4总氮分布逐渐由小的斑块向大的斑块转变,总氮变化范围逐渐变小 ...
徐国策 +4 more
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尼莫地平对不同时间点高血压脑出血患者血清炎性因子影响的实验研究
Zhongguo shiyan zhenduanxue, 2015 目的观察尼莫地平对不同时间点高血压脑出血患者血清炎性因子的影响。方法实验分3组,选取2012年4月至2014年2月我院收治的高血压脑出血患者80例,随机分为:常规治疗组采用常规治疗（n=40例）,尼莫地平治疗组在常规治疗的基础上加尼莫地平治疗（n=40例）,2组疗程均4周;同期住院的中枢神经系统非器质性疾病患者20例作为对照组;于24h、48h、72h、7d、14d、28d抽取患者肘静脉血,采用酶联免疫法检测各组血清中炎性因子IL-4、IL-6和IL-10蛋白含量的变化 ...
段淑霞, 刘涛, 王戬萌
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四川大学学报. 自然科学版, 2001 作为化学反应动力学过程过渡状态的活化给合物 ,实际上处于非平衡定态 .作者根据非平衡态热力学的随机理论 ,对反应速度活化络合物理论涉及的热力学及统计力学问题给予了评论 ;定量地分析了活化络合过程的耗散与涨落对反应速度的影响 ...
赵南蓉, 罗久里
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Gaoya dianqi, 2015 针对离网型光伏发电系统的组件倾角设计提出了一种分析方法,介绍了目前几种常用于倾角计算的光伏仿真软件,并最终选用PV&SOL作为倾角设计的工具,以西北地区某离网型光伏发电系统为例,进行了组件最佳倾角的仿真设计。所提出的设计方法综合考虑了发电系统的光照辐射量、负载情况、蓄电池的使用寿命、当地气候条件等因素,与传统上仅根据光照辐射量来选取组件最佳倾角相比,该方法更具有科学性、实用性。
廖敏, 马晓成, 周哲, 胡娟
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