Results 21 to 30 of about 1,283,545 (238)

电感耦合等离子体-飞行时间质谱仪(ICP-TOF-MS)的物理设计与仿真

open access: yesHe 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

Exploring Potential Mechanism of Quinolone Resistance of Foodborne Listeria monocytogenes Isolates(食品源单增李斯特菌喹诺酮类抗生素耐药机制研究) [PDF]

open access: yesShipin kexue jishu xuebao, 2018
The quinolone-resistant isolates were screened from 945 foodborne Listeria monocytogenes, aimed to explore the potential molecular mechanisms of quinolone resistance in Listeria monocytogenes.
CHENG Jianheng(程健恒)   +4 more
doaj   +1 more source

Aboveground herbivory elevates belowground rhizosphere volatile organic compound concentrations in ambient and polluted air, independent of volatile sampling methodology

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The effect of air pollution on plants is still underexplored, especially belowground. We used a field facility that released diesel exhaust and ozone at concentrations equivalent to those near a busy road in Reading, UK, to measure belowground gas exchange of Scots pine together with feeding by large pine weevils, a major pest of conifers.
Tihomir Simin   +7 more
wiley   +1 more source

基于龙芯的 实时控制器在超高温熔盐泵测试装置上的应用

open access: yesHe 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

电力系统基础仿真算法对比分析研究 [PDF]

open access: yes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

Using Harvest Data to Assess Factors Influencing Regional Population Declines of Muskrats (Ondatra zibethicus) 利用捕获数据评估影响麝鼠 (Ondatra zibethicus) 区域种群数量下降的相关因素

open access: yesWildlife 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

广告的应用心理学问题 [PDF]

open access: yes, 1990
本文是有关广告的应用心理问题方面的综述。该文从应用心理学的角度对如何提高广告效果,增进人们的购买行为 ...
许宗惠, 林仲贤
core   +1 more source

基于合作博弈的发电侧共享储能规划模型 [PDF]

open access: yes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

Conflict Social Networks of Critically Endangered Alpine Musk Deer in Captivity and Relationships With Fecal Steroid Hormones 圈养极危物种马麝的冲突社交网络及其与粪便类固醇激素的关联

open access: yesWildlife 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

心理所第五届心理学应用论坛在深圳召开

open access: yes, 2020
11月14日,中国科学院心理研究所第五届心理学应用论坛”在深圳举办。论坛由心理所心理健康应用中心执行主任李旭培主持,邀请心理所应用发展部主任张莉、深圳市智能穿戴产业联合会会长朱舜华分别致辞。 论坛首先由心理所应用发展部主任张莉、心理所副研究员赵国朕、中科启元集团儿童发展中心主任王建分别做主题报告。张莉在报告中介绍了心理学的应用现状、心理所具有应用转化价值的重点研究成果,并阐述了其对心理学应用发展及创新边界的思考。赵国朕以《让心可见,让科技更有温度》为主题,对人因智能的概念进行了诠释 ...
应用发展部
core   +1 more source

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