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Tribological analysis of the surface layer coated by sintered serpentine-reinforced composites

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Acta Metallurgica Sinica(English Letters) 2018年第6期31卷 615-622页

作者： xiao Wang Jun-wei Wu Lu-Hai Zhou xi-cheng wei Wu-Rong Wang School of Materials Science and Engineering Shanghai University

In this work,the serpentine powders were sintered to make the serpentine-reinforced Al-matrix composites,and the microstructures of which were characterized by differential scanning calorimetry,thermal gravimetric analyzer,and X-ray *** electron microscopy equipped with energy dispersive *** show that the sintered serpentine powders were deeply absorbed on the worn surface and embedded in the furrows and scratches of the matrix,forming a self-repairing surface layer which reduces the friction *** surface layer coated by serpentine was compact,dense,and uniform with the friction time prolonged,compensating the worn loss and increasing the matrix mass.

关键词： Serpentine Friction Wear Surface layer

Microstructural evolution of Al-Si coating and its influence on high temperature tribological behavior of ultra-high strength steel against H13 steel

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Journal of Iron and Steel Research International 2017年第10期24卷 1048-1058页

作者： Meng-xuan Guo Kai-xiang Gao Wu-rong Wang xi-cheng wei School of Materials Science and Engineering Shanghai UniversityShanghai 200072China

Al-Si coated ultra-high strength steel（UHSS）has been commonly applied in hot stamping *** influence of austenitizing temperature on microstructure of Al-Si coating of UHSS during hot stamping process and its tribological behavior against H13 steel under elevated temperature were simulatively *** austenitizing temperature of Al-Si coated UHSS and its microstructual evolution were confirmed and analyzed by differential scanning calorimetry and scanning electron microscopy.A novel approach to tribological testing by replicating hot stamping process temperature history was *** show that the hard and stable phases Fe_2Al_5＋FeAl_2 formed on Al-Si coating surface after exposure to 930°C for 5 min,which was found to be correlated to the tribological behavior of *** friction coefficient of coated steel was more stable and higher than that of uncoated *** main wear mechanism of Al-Si coated UHSS was adhesion wear,while abrasive wear was dominant for the uncoated UHSS.

关键词： Hot stamping Al-Si coating Ultra-high strength steel Intermetallic compound Diffusion Friction coefficient Adhesive wear

Continuous Mechanical Chest Compression-assisted Percutaneous Coronary Intervention in a Patient with Cardiac Arrest Complicating Acute Myocardial Infarction

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Chinese Medical Journal 2015年第6期128卷 846-848页

作者： Zhi-Ping Zhang xi Su cheng-wei Liu Dan Song Jian Peng Hua Yan Department of Cardiology Wuhan Asia Heart Hospital Wuhan Hubei 430022 China

Cardiac arrest with ventricular tachycardia or ventricular fibrillation in the catheterization laboratory is not uncommon, but patients who suffered cardiac arrest requiring prolonged cardiopulmonary resuscitation is not infrequent and still a major problem, because it is essentially impossible to perform effective manual chest compressions during percutaneous coronary interventions （PCIs）.

关键词： Cardiac Arrest Cardiopulmonary Resuscitation Myocardial Infarction Percutaneous Coronary Intervention

运用改进的无单元Galerkin方法分析机场道面断裂力学问题

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物理学报 2017年第12期66卷 34-41页

作者：邹诗莹席伟成彭妙娟程玉民上海大学上海市应用数学和力学研究所上海200072 上海大学土木工程系上海200444

在改进的无单元Galerkin方法的基础上,将能反映裂纹尖端附近应力奇异性的特征项r^(1/2)引入改进的移动最小二乘法的基函数中,将断裂力学和改进的无单元Galerkin方法结合,研究了线弹性断裂力学的改进的无单元Galerkin方法,并对含反射裂... 详细信息

在改进的无单元Galerkin方法的基础上,将能反映裂纹尖端附近应力奇异性的特征项r^(1/2)引入改进的移动最小二乘法的基函数中,将断裂力学和改进的无单元Galerkin方法结合,研究了线弹性断裂力学的改进的无单元Galerkin方法,并对含反射裂缝的机场复合道面层状体系结构进行了数值分析.本文的理论为机场复合道面断裂力学分析提供了一种新方法.

关键词：改进的无单元Galerkin方法机场复合道面层状体系反射裂缝

Design,Synthesis of 6-Substituted-pyrido[3,2-d]pyridazine Derivatives with Anticonvulsant Activity

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Design,Synthesis of 6-Substituted-pyrido[3,2-d]pyridazine De...

基于改进单神经元PID控制的车辆主动悬架动力学仿真

2011年全国药物化学学术会议——药物的源头创新

作者： Guo-Hua Gong xiao-Mei Liu cheng-xi wei Zhe-Shan Quan~* College of Pharmacy,Yanbian University,Yanji,Jilin,133000,China,

＜正＞Aim to find new compounds with stronger anticonvulsant activity and lower neurotoxicity,a novel series of 6-substituted-pyrido[3,2-d]pyridazine derivatives was synthesized using furo[3,4-b] pyridine-5,7-dione as the starting *** anticonvulsant activities were evaluated by the maximal electroshock test（MES） and their neurotoxicities were measured by the rotarod ***

关键词： Pyrido[3,2-d]pyridazine Anticonvulsant Maximal electroshock Neurotoxicity

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兰州工业学院学报 2018年第5期25卷 77-80页

作者：程西伟安徽中佳自动化科技有限公司安徽滁州239000

为提高车辆行驶的稳定性和安全性,采用改进单神经元PID控制车辆主动悬架系统.创建2自由度车辆主动悬架模型简图,给出车辆振动的动力学方程式.在传统PID控制器原理上,设计了微分跟踪器结合单神经元PID控制器用于车辆主动悬架系统控制,在... 详细信息

为提高车辆行驶的稳定性和安全性,采用改进单神经元PID控制车辆主动悬架系统.创建2自由度车辆主动悬架模型简图,给出车辆振动的动力学方程式.在传统PID控制器原理上,设计了微分跟踪器结合单神经元PID控制器用于车辆主动悬架系统控制,在复杂路况激励下通过Matlab软件进行仿真,并与传统PID控制仿真结果进行比较.结果表明:在受到复杂路面激励干扰时,采用改进单神经元PID控制器使车辆轮胎垂向位移、悬架垂向行程和垂向加速度的最大值降低,整体波动幅度较小;车辆主动悬架系统采用改进神经元PID控制器,能够抑制复杂路面的干扰,维持车辆行驶的稳定性和安全性.

关键词：车辆主动悬架改进PID控制器单神经元仿真

Relationship between longitudinal changes in lipid composition and ischemic stroke among hypertensive patients

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World Journal of Clinical Cases 2025年第4期13卷 18-27页

作者： cheng-cheng wei Yu-Qing Huang cheng-Hong Yu Department of Cardiology Tongxiang First People's HospitalTongxiang 314500Zhejiang ProvinceChina Department of Cardiology Guangdong Cardiovascular InstituteGuangzhou 510080Guangdong ProvinceChina

BACKGROUND Dyslipidemia was strongly linked to stroke,however the relationship between dyslipidemia and its components and ischemic stroke remained *** To investigate the link between longitudinal changes in lipid profiles and dyslipidemia and ischemic stroke in a hypertensive *** Between 2013 and 2014,6094 hypertension individuals were included in this,and ischemic stroke cases were documented to the end of *** changes of lipid were stratified into four groups:(1)Normal was transformed into normal group;(2)Abnormal was transformed into normal group;(3)Normal was transformed into abnormal group;and(4)Abnormal was transformed into abnormal *** examine the link between longitudinal changes in dyslipidemia along with its components and the risk of ischemic stroke,we utilized multivariate Cox proportional hazards models with hazard ratio(HR)and 95%*** The average age of the participants was 62.32 years±13.00 years,with 329 women making up 54.0%of the *** the course of a mean follow-up of 4.8 years,143 ischemic strokes *** normal was transformed into normal group was used as a reference,after full adjustments,the HR for dyslipidemia and ischemic stroke among abnormal was transformed into normal group,normal was transformed into abnormal group and abnormal was transformed into abnormal wei CC et *** changed and ischemic stroke WJCC https://*** 2 February 6,2025 Volume 13 Issue 4 group were 1.089(95%CI:0.598-1.982;P=0.779),2.369(95%CI:1.424-3.941;P<0.001)and 1.448(95%CI:1.002-2.298;P=0.047)(P for trend was 0.233),*** In individuals with hypertension,longitudinal shifts from normal to abnormal in dyslipidemia-particularly in total and low-density lipoprotein cholesterol-were significantly associated with the risk of ischemic stroke.

关键词： Longitudinal change Hypertension Dyslipidemia Lipid profile Ischemic stroke

辽河断陷盆地西部晚寒武世至早奥陶世牙形石生物地层

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维普期刊数据库

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微体古生物学报 1999年第3期16卷 297-312,337-339页

作者：董熙平郝维城王仁厚魏喜赖维成张英韩琦鲁颖淮北京大学地质学系北京100871 辽河石油管理局勘探开发研究院辽河盘锦124010

辽河断陷盆地西部凹陷古潜山顶部地层的时代 ,自 70年代末期以来 ,一直被认为属于中、上元古代。本文通过在总面积为 60 0 km2 的西部凹陷中段系统、详尽的牙形石生物地层研究 ,并结合疑源类、小壳化石以及岩石地层学资料 ,确认研究区... 详细信息

辽河断陷盆地西部凹陷古潜山顶部地层的时代 ,自 70年代末期以来 ,一直被认为属于中、上元古代。本文通过在总面积为 60 0 km2 的西部凹陷中段系统、详尽的牙形石生物地层研究 ,并结合疑源类、小壳化石以及岩石地层学资料 ,确认研究区内古潜山顶部地层的时代主要为晚寒武世至早奥陶世。中、上元古代地层在研究区内虽然存在 ,但分布极其局限。从而 ,彻底改变了2 0年以来对该地区古潜山地层划分和对比上的传统认识。

关键词：牙形石晚寒武世早奥陶世辽河断陷西部

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非小细胞肺癌3种化疗方案毒副作用比较

陕西医学杂志 2004年第4期33卷 317-319页

作者：程西安李唯陕西省铜川市人民医院呼吸内科铜川727000 第四军医大学西京医院呼吸内科

目的 :观察比较 3种化疗方案其药物的血液和非血液毒副作用。方法 :对 87例非小细胞肺癌 ( NSCL C)患者分别采用诺维本 ( NVB) +顺铂 ( DDP) 32例 ;泰素 ( TAX) +DDP2 8例 ;健择 ( GEM) + DDP2 7例静脉滴入化疗 ;化疗周期分别为 NVB5 2... 详细信息

目的 :观察比较 3种化疗方案其药物的血液和非血液毒副作用。方法 :对 87例非小细胞肺癌 ( NSCL C)患者分别采用诺维本 ( NVB) +顺铂 ( DDP) 32例 ;泰素 ( TAX) +DDP2 8例 ;健择 ( GEM) + DDP2 7例静脉滴入化疗 ;化疗周期分别为 NVB5 2个 ,TAX45个 ,GEM34个。结果 :1 NVB、TAX、GEM联合顺铂化疗的毒副作用主要表现为骨髓抑制和消化道反应 ,大部分为、度 ;2 NVB组在影响白细胞方面较其他两组略强 ,而在其他方面无显著性差异。结论 :3种化疗方案其药物的血液毒性在骨髓中的蓄积作用不明显 ,非血液毒副作用有良好的耐受性。

关键词：非小细胞肺癌化疗毒副作用长春碱阿糖核苷类