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Zhijie HUANG, Xiaodan REN, Zuyu CHEN, Daosheng LING
《结构与土木工程前沿(英文)》 2019年 第13卷 第6期 页码 1350-1362 doi: 10.1007/s11709-019-0559-x
关键词: underwater explosion centrifuge experiment shock load dynamic response accumulated shock impulse
LI Tao, YANG Guangming, XU Jing, LIU Jiancang, LIU Liangming
《医学前沿(英文)》 2008年 第2卷 第3期 页码 248-254 doi: 10.1007/s11684-008-0047-5
Expression of heat shock protein gp96 in osteosarcoma and its clinical significance
GUO Weichun, CHEN Anmin
《医学前沿(英文)》 2008年 第2卷 第2期 页码 200-203 doi: 10.1007/s11684-008-0038-6
Jinya KATSUYAMA, Shumpei UNO, Tadashi WATANABE, Yinsheng LI
《机械工程前沿(英文)》 2018年 第13卷 第4期 页码 563-570 doi: 10.1007/s11465-018-0487-9
The thermal hydraulic (TH) behavior of coo-lant water is a key factor in the structural integrity assessments on reactor pressure vessels (RPVs) of pressurized water reactors (PWRs) under pressurized thermal shock (PTS) events, because the TH behavior may affect the loading conditions in the assessment. From the viewpoint of TH behavior, configuration of plant equipment and their dimensions, and operator action time considerably influence various parameters, such as the temperature and flow rate of coolant water and inner pressure. In this study, to investigate the influence of the operator action time on TH behavior during a PTS event, we developed an analysis model for a typical Japanese PWR plant, including the RPV and the main components of both primary and secondary systems, and performed TH analyses by using a system analysis code called RELAP5. We applied two different operator action times based on the Japanese and the United States (US) rules: Operators may act after 10 min (Japanese rules) and 30 min (the US rules) after the occurrence of PTS events. Based on the results of TH analysis with different operator action times, we also performed structural analyses for evaluating thermal-stress distributions in the RPV during PTS events as loading conditions in the structural integrity assessment. From the analysis results, it was clarified that differences in operator action times significantly affect TH behavior and loading conditions, as the Japanese rule may lead to lower stresses than that under the US rule because an earlier operator action caused lower pressure in the RPV.
关键词: structural integrity reactor pressure vessel pressurized thermal shock thermal hydraulic analysis pressurized water reactor weld residual stress
Fanfan Li, Mengzhou He, Meitao Yang, Yao Fan, Yun Chen, Xi Xia, Yin Xie, Dongrui Deng
《医学前沿(英文)》 2018年 第12卷 第5期 页码 542-549 doi: 10.1007/s11684-017-0576-x
Preeclampsia (PE) is a pregnancy-specific, multi-system disorder and the leading cause of maternal and perinatal morbidity and mortality in obstetrics worldwide. Excessive vasoconstriction and dysregulated coagulation function are closely associated with PE. Heat shock protein 20 (HSP20) is ubiquitously expressed under normal physiological conditions and has important roles in vascular dilatation and suppression of platelet aggregation. However, the role of HSP20 in the pathogenesis of PE remains unclear. In this study, we collected chorionic plate resistance arteries (CPAs) and serum from 118 healthy pregnant women and 80 women with PE and detected the levels of HSP20 and its phosphorylated form. Both HSP20 and phosphorylated HSP20 were downregulated in CPAs from women with PE. Comparison of the vasodilative ability of CPAs from the two groups showed impaired relaxation responses to acetyl choline in preeclamptic vessels. In addition to the reduced HSP20 in serum from women with PE, the platelet distribution width and mean platelet volume were also decreased, and the activated partial thromboplastin time and thromboplastin time were elevated. With regard to the vital roles of HSP20 in mediating vasorelaxation and coagulation function, the decreased HSP20 might contribute to the pathogenesis of PE.
关键词: preeclampsia heat shock protein 20 vascular relaxation coagulation-fibrinolytic system
Nitin Kumar SAXENA,Ashwani Kumar SHARMA
《能源前沿(英文)》 2015年 第9卷 第4期 页码 472-485 doi: 10.1007/s11708-015-0373-7
关键词: isolated hybrid power system (IHPS) composite load model static load dynamic load induction motor load model aggregate load
刘红岩,吕淑然,秦四清
《中国工程科学》 2007年 第9卷 第3期 页码 92-96
采用应力波衰减损伤模型对仅适用于模拟基于线性本构关系和恒定载荷作用下物体变形规律的数值 流形程序进行了扩展;利用扩展后的程序对岩石长杆在冲击载荷作用下的损伤演化规律进行了模拟,得出了不 同位置点处的损伤演化曲线和材料总体的损伤演化曲线。模拟结果表明,损伤的增加主要集中在冲击载荷作用的初始阶段,随着时间的推移,应力波强度衰减,损伤将不再明显增加。
Effects on mechanical properties in electron beam welding of TC4 alloy by laser shock processing
LU Jinzhong, ZHANG Yongkang, KONG Dejun, REN Xudong, GE Tao, ZOU Shikun
《机械工程前沿(英文)》 2007年 第2卷 第4期 页码 478-482 doi: 10.1007/s11465-007-0083-x
Calculation method of load distribution on pipe threaded connections under tension load
Shoujun CHEN, Lianxin GAO, Qi AN
《机械工程前沿(英文)》 2011年 第6卷 第2期 页码 241-248 doi: 10.1007/s11465-011-0219-x
This paper presents a new calculation method that can calculate the load distribution on pipe threaded connections under tension load. On the basis of elastic mechanics, the new method was developed by analyzing each thread tooth, and a new deformation and covariant equation by making a mechanics analysis on each thread tooth was obtained. Compared with the traditional method proposed by the previous references, the new deformation and covariant equation could be used to describe the relation between the previous and the next thread tooth. By applying the new method on the sample of P-110S pipe threaded connection, the obtained results show that the load on thread tooth mainly concentrates on the four or five threads engaged and the middle teeth were not utilized well to bear the loads. The model offers a new way to calculate the loads carried on the thread teeth under tension load.
关键词: load distribution calculation method pipe threaded connections tension load
柯松林,李琳娜,司剑峰,钟冬望
《中国工程科学》 2014年 第16卷 第11期 页码 103-106
以厦门港古雷航道水下炸礁为例,分析了水下钻孔爆破的水击波形成特征,并通过爆破区的水中冲击波压力监测,实测了不同距离处的水击波压力大小和变化规律,研究了水中冲击波压力幅值、正压作用时间等作用特性,得到了水击波传播衰减公式。研究成果对指导工程设计施工和环境安全评估具有参考意义。
Veera Venkata Satya Naryana MURTY, Ashwani KUMAR
《能源前沿(英文)》 2013年 第7卷 第2期 页码 197-213 doi: 10.1007/s11708-013-0249-7
关键词: load growth load models reactive power compensation radial distribution system power loss index (PLI) power loss sensitivity (PLS) index vector (IV)
沈俊,李永池,庞伟宾,
《中国工程科学》 2006年 第8卷 第3期 页码 53-57
对空气冲击波在90°拐角坑道内传播的到时规律及其影响因素进行了实验研究,在无量纲分析基础上建立了简化的工程模型。通过对实验数据拟合建立了可以对高能炸药在90°拐角坑道内爆炸产生的空气冲击波到达时间进行预计的公式,利用该公式可以进一步求得空气冲击波在90°拐角坑道内的传播速度。
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 877-894 doi: 10.1007/s11709-021-0756-2
关键词: bridges multi-lane factor traffic load lane load disparity multi-truck presence weigh-in-motion data
Shape design of arch dams under load uncertainties with robust optimization
Fengjie TAN, Tom LAHMER
《结构与土木工程前沿(英文)》 2019年 第13卷 第4期 页码 852-862 doi: 10.1007/s11709-019-0522-x
关键词: arch dam shape optimization robust optimization load uncertainty approximation model
Prediction of bed load sediments using different artificial neural network models
Reza ASHEGHI, Seyed Abbas HOSSEINI
《结构与土木工程前沿(英文)》 2020年 第14卷 第2期 页码 374-386 doi: 10.1007/s11709-019-0600-0
关键词: bed load prediction artificial neural network modeling empirical equations
标题 作者 时间 类型 操作
Centrifuge experiment and numerical analysis of an air-backed plate subjected to underwater shock loading
Zhijie HUANG, Xiaodan REN, Zuyu CHEN, Daosheng LING
期刊论文
Beneficial effect of arginine vasopressin on hemorrhagic shock through improving the vascular reactivity
LI Tao, YANG Guangming, XU Jing, LIU Jiancang, LIU Liangming
期刊论文
Expression of heat shock protein gp96 in osteosarcoma and its clinical significance
GUO Weichun, CHEN Anmin
期刊论文
Influence evaluation of loading conditions during pressurized thermal shock transients based on thermal-hydraulics
Jinya KATSUYAMA, Shumpei UNO, Tadashi WATANABE, Yinsheng LI
期刊论文
Alteration of heat shock protein 20 expression in preeclamptic patients and its effect in vascular and
Fanfan Li, Mengzhou He, Meitao Yang, Yao Fan, Yun Chen, Xi Xia, Yin Xie, Dongrui Deng
期刊论文
Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid
Nitin Kumar SAXENA,Ashwani Kumar SHARMA
期刊论文
Effects on mechanical properties in electron beam welding of TC4 alloy by laser shock processing
LU Jinzhong, ZHANG Yongkang, KONG Dejun, REN Xudong, GE Tao, ZOU Shikun
期刊论文
Calculation method of load distribution on pipe threaded connections under tension load
Shoujun CHEN, Lianxin GAO, Qi AN
期刊论文
Comparison of optimal capacitor placement methods in radial distribution system with load growth andZIP load model
Veera Venkata Satya Naryana MURTY, Ashwani KUMAR
期刊论文
A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities
期刊论文
Shape design of arch dams under load uncertainties with robust optimization
Fengjie TAN, Tom LAHMER
期刊论文