Results 21 to 30 of about 21,237 (166)
Simulation Analysis and Optimization of Coach Seat and Passenger Coupling Impact System [PDF]
, 2015 据相关资料表明，在客车碰撞所造成的人员伤亡中，因乘员与座椅之间的二次碰撞或座椅与车体相连部位的失效占了相当大的比例。为了提高我国客车在碰撞事故中对乘员的保护能力，客车座椅及其固定点强度的国家标准GB13057-2014目前已从推荐性标准升级为强制性实施标准。为了保证所设计的座椅能满足新法规要求，必须深入研究客车座椅及其固定支架的结构变形及乘员在碰撞过程中的伤害情况。 汽车碰撞过程是一个瞬间的复杂的物理变形过程，它包含了几何非线性，材料弹塑性变形非线性和零部件间复杂的接触非线性等特征 ...
卢琳兆
core
Paddy-brown rice boundary detection method based on machine vision [PDF]
Objective: To detect and locate the boundary line between paddy and brown rice in separation equipment. Methods: A method based on straight-line edge detection was proposed by performing model matching with different color features.
FAN Jijun +5 more
core +1 more source
Veterinary Dermatology, EarlyView.ABSTRACT Background Identification of offending foods in dogs with adverse food reactions is usually based on “deterioration” during open food challenges. Objectives To examine the placebo effect during double‐blinded, placebo‐controlled food challenges using a predefined set of criteria for relapse.
Evi I. Sofou +4 more
wiley +1 more source
Gaoya dianqi, 2013 受设备容量的限制以及传统试验方法的局限,实验室很难对具有较长时间常数的特高压断路器进行非对称电流开断试验。笔者分析了该试验的原理,提出了一种新的电流补偿的试验方法。通过计算分析,论证了试验方法的等价性。1 100 kV断路器非对称电流开断试验采用了该试验方法,并顺利完成了多台产品的试验。这种试验方法还进行了推广应用,成功地完成了发电机断路器的非对称电流开断试验。
李刚 +6 more
doaj
Wear Resistance of Cast Iron Remelted by Non-Transferred Laminar Plasma Jet [PDF]
, 2004 对在大气压条件下用非转移弧层流等离子体射流熔凝强化处理的W-Mo-Cu铸铁表面,采用光学显微镜、显微硬度计、磨损试验机、扫描电镜等,观察和测试了熔凝试样的表面层组织、硬度、耐磨性和磨损形貌.结果表明,熔凝后铸铁表面为初晶渗碳体和莱氏体组成的过共晶组织 ...
潘文霞, 费群星, 马维
core
International Journal of Applied Linguistics, Volume 36, Issue 1, Page 393-408, February 2026.ABSTRACT Acknowledging the limitations of existing measurement instruments in adequately capturing the distinct cognitive processes (e.g., form‐focused vs. meaning‐focused) involved in informal digital learning of English (IDLE), this paper asserts a pressing need to develop and validate robust instruments that measure form‐focused and meaning‐focused ...
Minlin Zou +3 more
wiley +1 more source
Gaoya dianqi, 2018 为了研究功率模块数不对等条件下柔性直流换流阀阀段运行试验方法,文中通过分析阀段运行试验过程中进行模块旁路试验的过程,建立了试验回路电流和模块电压的数学计算模型,提出了功率模块数不对等条件下的阀段运行试验方法。利用PSIM仿真软件对试验方法进行了仿真,并在实际的阀段运行试验中应用了该方法。仿真与试验结果表明,文中设计的试验方法可以实现功率模块数不对等条件下MMC阀段运行试验测试,满足试验要求。
田鸿昌 +5 more
doaj
Study on raw material control and engineering simulation application of C60 self compacting concrete take Southeast Xiamen international shipping center as an example [PDF]
, 2017 摘要 自密实混凝土（SCC）因其优异工作性能，近年来在高层建筑、桥梁、地下结构等工程中受到广大技术人员的青睐。目前，国内外学者大都侧重于研究自密实混凝土配合比的设计及工作性能方面，而对于其生产过程中的原材料控制和施工质量方面的深入研究还相对较少。本文主要针对自密实混凝土的原材料及工程模拟应用方面进行系统研究，其研究成果如下： （1）以混凝土“自密实性”为切入点，通过对关键影响因素进行分析、比较，确定了以水胶比、砂率、粉煤灰掺量、矿粉掺量为四因子的正交试验方法，得到实验室配合比；通过多次试配和反复验证 ...
曾艺勤
core
Study on rapid determination method of ash content in wheat flour based on stochastic forest regression model [PDF]
ObjectiveTo achieve rapid and accurate determination of ash content in wheat flour.MethodsBy preprocessing wheat raw materials and analyzing key influencing factors such as milling time and conductivity in depth, these factors were introduced as ...
CHEN Caihong, LIU Yanqun, XIAO Fugang
core +1 more source
Veterinary Dermatology, Volume 37, Issue 1, Page 89-102, February 2026.ABSTRACT Background Recurrent otitis externa (OE) episodes commonly affect dogs with canine atopic dermatitis (cAD) despite ongoing cAD treatment. Objective To determine if a therapeutic diet with active ingredients targeting the skin barrier and allergy pathways reduces the incidence rate of OE.
Adrian Watson +5 more
wiley +1 more source