Results 11 to 20 of about 4,795 (205)

Immunoglobulin E‐specific allergens against leaf in serum of dogs with clinical features of grass leaf allergy

open access: yesVeterinary Dermatology, Volume 34, Issue 5, Page 393-403, October 2023., 2023
Background – Grass leaf has been suspected to cause immunoglobulin (Ig)E‐mediated immediate hypersensitivity reactions both in humans and in dogs. However, most studies in this area are case control studies without in vitro data showing the involvement of IgE in the reaction.
Ken Mason, Janet Davies, Merja Ruutu
wiley   +1 more source

Administrative burden in digital public service delivery: The social infrastructure of library programs for e‐inclusion

open access: yesReview of Policy Research, Volume 40, Issue 5, Page 626-645, September 2023., 2023
Abstract In their efforts to digitize public service delivery, countries increasingly use algorithms based on mathematical models, data and/or a combination of different administrative datasets to issue decisions, but recent studies point towards challenges around citizens' understanding, accessing, and filing objections to such automated decisions ...
Sarah Giest, Annemarie Samuels
wiley   +1 more source

Toward tailored care for families with multiple problems: A quasi‐experimental study on effective elements of care

open access: yesFamily Process, Volume 61, Issue 2, Page 571-590, June 2022., 2022
Abstract Several effective interventions have been developed for families with multiple problems (FMP), but knowledge is lacking as to which specific practice and program elements of these interventions deliver positive outcomes. The aim of this study is to assess the degree to which practice and program elements (contents of and structure in which ...
Loraine Visscher   +7 more
wiley   +1 more source

Digital systemic practices in Europe: a survey before the Covid‐19 pandemic

open access: yesJournal of Family Therapy, Volume 43, Issue 1, Page 4-26, February 2021., 2021
Knowledge regarding digital practices in the field of systemic therapy is poor. A few surveys have been conducted in non‐European countries investigating the provision of digitally based therapy, counselling, training, and supervision by systemic family and couple therapists (SCFTs).
Maria Borcsa   +2 more
wiley   +1 more source

插接式的气体绝缘母线接触退化实验研究

open access: yesGaoya dianqi, 2021
插接式的气体绝缘母线(gas insulated bus,GIB)触头是大电流、非空气介质下的电接触理论在工程上的典型应用,触头通过导电杆与触指间的滑动接触来克服因导体热胀冷缩产生的热应力。设备长期运行过程中因导电杆滑动而产生的摩擦磨损直接影响触头的电接触性能。为揭示大电流、非空气介质下GIB触头的接触退化机理,文中首先对GIB触头接触模型进行简化,接着搭建了简化接触模型试样的载流摩擦试验平台,基于该平台开展了不同气体介质、接触压力和电流载荷下GIB触头试样的摩擦试验 ...
董哲, 秦靖舒, 彭辉, 关向雨
doaj  

Investigation of Porous Silicon/Carbon Composite as Anodes for Lithium Ion Batteries [PDF]

open access: yes, 2015
以商业化多晶硅粉为原料,采用金属银催化剂诱导化学腐蚀的方法制得三维多孔硅材料。通过优化腐蚀条件,得到孔径约为130 nM,比表面为4.85 M2/g的多孔硅材料。将多孔硅和PAn溶液混合球磨并经高温烧结后在多孔硅表面包覆上一层致密的无定形碳膜,从而制得多孔硅/碳复合材料作为锂离子电池的负极材料。3d多孔硅结构可以缓解电化学嵌/脱锂过程中材料的体积效应,无定形碳膜层可有效改善复合材料的导电性能。电化学性能测试表明,该多孔硅/碳复合负极材料电池在0.4 A/g的恒电流下,首次放电容量3345 M AH/g ...
杨勇   +4 more
core   +1 more source

玻碳电极表面复合配位银电结晶机理研究 [PDF]

open access: yes, 2018
以具有实际应用价值的复合配位体系无氰镀银电解液为研究对象,运用循环伏安和电位阶跃等实验方法,结合Scharifker-Hill经典理论模型分析,成功获得了Ag在玻碳电极(GCE)表面电沉积的成核机理及成核动力学参数,并分析了温度对成核方式及成核动力学参数的影响.结果表明,该体系下Ag在GCE表面的电沉积是由扩散控制的不可逆过程,遵循三维瞬时成核生长机理.随着阶跃电位从-750 m V负移至-825 m V,峰值还原电流Im逐渐增大,达到峰值还原电流所需时间tm逐渐缩短,扩散系数D变化不大,基本稳定在(7.
刘诚   +5 more
core   +1 more source

Electrochemical Impedance Spectroscopic Studies of the First Lithiation of Si/C Composite Electrode [PDF]

open access: yes, 2011
The Si/C composite materials were prepared by ball milling method, and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The result displayed that Si in the Si/C composite materials still maintained a good crystal structure
Du Lili   +11 more
core   +3 more sources

10kV高压断路器电气试验机器人接线装置研究

open access: yesGaoya dianqi, 2022
采用机器人技术进行10 kV高压断路器电气试验可克服人工试验存在的问题,有效提高试验效率和质量水平。文中研究了电气试验机器人接线装置(含接线插头和线仓)关键技术,针对最为复杂的回路电阻测试项目,研究并设计了一种集电压与电流接触于一体的弹片式新型接线插头,使得机器人一次接线即可完成回路电阻测试;根据机器人负载能力,研究了插头接触弹片与断路器断口梅花触头触指的接触压力与接触电阻关系,设计了接线插头接触弹片,满足接触电阻的要求。研究并设计了由接线插头定位基座和平面涡簧收放线装置构成的线仓机构 ...
王俊波   +6 more
doaj  

基于Ansys的柱上开关温度场仿真分析

open access: yesGaoya dianqi, 2022
文中采用三维建模软件Solidworks及有限元软件Ansys对充入干燥空气的柱上开关进行了温度场仿真分析,研究不同接触电阻条件下柱上开关内温度分布规律。仿真结果表明,柱上开关接触点在正常接触电阻条件下温升均符合标准要求;真空灭弧室静触头与动触头接触点接触电阻增大1.56倍,隔离开关动触头与隔离开关静触头接触点接触电阻增大1.80倍,温升达到标准规定的限值。最后,进行了相应的温升试验,温度的仿真结果与试验结果相吻合。
陆德鹏   +4 more
doaj  

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