Results 21 to 30 of about 69,697 (199)
电感耦合等离子体
He jishu电感耦合等离子体质谱（Inductively Coupled Plasma Mass Spectrometer，ICP-MS）是元素及同位素比分析的重要技术手段。其中飞行时间质谱（Time-of-flight Mass Spectrometer，TOF-MS）以其原理简单、灵敏度高、检测质量范围宽，并能一次获取全范围质量信息等特点在有机分子和生物医药检测领域获得广泛应用。本文针对钍基熔盐堆服役过程中铀及超铀元素的质量分析需求，实现了ICP离子源与TOF-MS相结合的物理设计并进行了仿真模拟 ...
周 源 +5 more
doaj +1 more source
全球能源互联网, 2018 微分代数方程的解算方法是电力系统仿真技术的基础，不同的解算方法得到仿真模型的解算结果之间存在差异，这对模型的计算分析及评估有重要影响。基于当前较为常用的商用软件平台中使用的三种分析方法—EMTP类软件的节点分析法、用于Matlab/Simulink的状态空间法以及用于RT-LAB平台的状态空间节点法，结合各算法的特性，基于典型RLC电路模型进行仿真，通过仿真结果说明各算法之间的差异，并理论分析了结果差异产生的原因。
刘栋 +6 more
doaj +1 more source
The Distributive Consequences of Active Welfare Policies in Europe
European Policy Analysis, EarlyView.ABSTRACT This article examines the distributive consequences of active welfare policies in Europe by analysing tier‐specific investments in individualised employment services across four European welfare states: Denmark, Germany, the Netherlands and the United Kingdom.
Deborah Jackwerth‐Rice +1 more
wiley +1 more source
He jishu超高温熔盐泵测试装置是一套用于研究泵、阀、换热器等关键设备在高温熔盐工况下性能的装置。为增强其控制系统的国产化程度及核心控制器的自主可控性，在国产自主指令架构LoongArch上设计研发了基于实验物理与工业控制系统（Experimental Physics and Industrial Control System，EPICS）的实时控制器。首先将EPICS、IgH EtherCAT Master等软件移植到基于LoongArch的嵌入式开发板上，解决软件与指令架构不适配的问题，实现控制程序的编写与执行、
邓 琦 +4 more
doaj +1 more source
全球能源互联网, 2019 共享储能可有效提高储能设备利用率，降低储能成本。然而目前对共享储能的研究集中于中小型用户，并且未考虑输电成本和网损的影响。提出一种发电侧共享储能机制（包括储能供需的形成机制、储能供需的匹配机制和共享储能收益的分配机制），并在此基础上建立基于合作博弈的共享储能规划模型。进一步，基于实际风电数据对共享储能的典型场景进行仿真，检验联盟的整体理性、参与者的个体理性和联盟的稳定性，分析输电成本、网损和储能成本对博弈结果的影响。以算例结果验证所提共享储能机制和规划模型的有效性。
孙偲 +4 more
doaj +1 more source
Equine Veterinary Journal, EarlyView.Abstract Background Persistent breeding‐induced endometritis (PBIE) is a common reason for mares failing to establish pregnancy. Objective To examine the hypothesis that advancing mare age and embryo donor status predispose to PBIE and compromise fertility.
Tom Stout +3 more
wiley +1 more source
International Insolvency Review, EarlyView.Abstract Although a local experiment, the promulgation of the Regulations of Shenzhen Special Economic Zone on Personal Bankruptcy (SPBR) in 2020 was hailed as a significant milestone in China's insolvency lawmaking which has thus far addressed only corporate insolvencies.
Jenny Fu, Jin Chun
wiley +1 more source
Wildlife Letters, EarlyView.Using a 3‐year, broad‐scale camera‐trap network in western Kansas, we tested whether coyotes and American badgers exhibit spatiotemporal patterns consistent with coordinated hunting. Despite high diel activity overlap, detection‐conditioned co‐detections occurred far less frequently than expected under independence, and short‐term temporal sequencing ...
Ty J. Werdel +3 more
wiley +1 more source
Wildlife Letters, EarlyView.Reported annual per‐capita harvest of muskrats (PCHM) decreased as wetland complexity (total number of wetland patches) decreased in 13 state and federal wetland areas in the Midwest, USA. Our results support the hypothesis that regional‐scale declines in the abundance of muskrats are likely associated with the losses to wetland habitats throughout the
Tim L. Hiller +5 more
wiley +1 more source
Wildlife Letters, EarlyView.We conducted a grouping study on 52 adult musk deer to investigate whether group sex composition modulates aggressive behavior and stress response in captive musk deer. We found that the conflict interactions of all‐male groups were significantly more than those of mixed groups, and compared with the mixed groups, the conflict interactions of all‐male ...
Xiaolong Wang +5 more
wiley +1 more source