The Dynamic test of Novel Punch Driven by Linear Motor

1 IntroductionWth the development of science and technology, the dynandc test system is more and moreaPPlied in the science studies, teChnological develOPment and engineering Prachce. It requiresunderstanding quantitatively and deeply the law of changed parameters during various transientProcesses. This requirement PrOInots strOngly the develoPment of the dynandc test teChnologyThe dynandc behavior of the test system is its frequency behavior The ordinary transformahonalgOrithm between t…     

地图窗口的集成化实现技术

介绍了当前MIS系统中实现地图窗口集成化的两大技术 :OLE自动化技术和GIS组件技术 ,并对两大技术进行了比较 ;最后 ,由一个实例讨论了MapX组件的应用方法     

抽真空管线振动和异响的原因分析

针对河南神马尼龙化工有限公司制氢装置抽真空管线振动和异响的过程中,出现变压吸附的情况,找出原因,并想出解决方法。     

全套管钻孔咬合桩防渗支护结构在深基坑工程中的应用

全套管钻孔咬合桩作为一种新型的基坑支护结构已经成功地应用于深圳、广州、中山等珠江三角洲软土地区的多个基坑工程项目中,施工工艺已较为成熟。通过介绍几个软土深基坑工程应用实例,阐述了这种支护结构的技术特点,可供类似基坑支护工程参考。     

增施CO2对温室沙培厚皮甜瓜生长发育影响的初步研究

在日光温室内燃烧酒精增施ＣＯ２气肥，能提高通风前无土栽培温室内ＣＯ２浓度，明显增强西域１号网纹甜瓜植株生长势，增产３６．６％，增值５１．４％。     

KZ4A型客运机车构架计算及优化

对KZ4A型客运机车构架进行了静强度和疲劳强度的校核,并进行了局部结构优化。     

Peroxisomes are involved in the swift increase in alcohol metabolism

The purpose of this study was to determine whether catalase-dependent alcohol metabolism is activated by alcohol (i.e., swift increase in alcohol metabolism). When ethanol or the selective substrate for catalase, methanol, was given (5.0 g/kg) in vivo 2 to 3 h before liver perfusion, methanol and oxygen metabolism were increased significantly. This increase was blocked when the specific Kupffer cell toxicant GdCl3 was administered 24 h before perfusion. These data support the hypothesis that catalase-dependent alcohol metabolism is activated by acute alcohol and that Kupffer cells are involved. Ethanol treatment in vivo increased ketogenesis from endogenous fatty acids nearly 3-fold and increased plasma triglycerides and hepatic acyl CoA synthetase activity; all increases were blocked by GdCl3. These findings support the hypothesis that ethanol increases H2O2 supply for catalase-dependent alcohol metabolism by increasing fatty acid supply. Infusion of oleate stimulated oxygen uptake 1.5-fold and methanol metabolism 4-fold, but these parameters were not altered by GdCl3. Moreover, the effects of ethanol treatment were blocked by the cyclooxygenase inhibitor indomethacin, and prostaglandin E2 (PGE2) was increased more than 200% in media from cultured Kupffer cells from rats treated with ethanol in vivo. Furthermore, lipoprotein lipase activity in retroperitoneal fat pads, which is known to be inhibited by PGE2, was reduced 70% by ethanol. These data are consistent with the hypothesis that Kupffer cells play a key role in activation of catalase-dependent alcohol metabolism, most likely by producing mediators (e.g., PGE2) that inhibit lipoprotein lipase, increase the supply of fatty acids to the liver, and increase generation of H2O2 via peroxisomal beta-oxidation.     

电沉积Co-Cr_3C_2纳米复合涂层的热稳定性（英文）

研究了电沉积Co-Cr3C2纳米复合涂层的热稳定性。析出相Cr3C2颗粒均匀弥散地分布在涂层中,质量分数大约为30%。600℃以上退火导致涂层当中形成孔隙。400℃以下和600℃以上退火分别有利于Co纳米晶粒沿[002]和[220]方向生长。低于400℃退火可以同时获得优异的耐磨性和高硬度。经低于400℃退火,涂层的摩擦系数达到0.12,而经200℃退火后的涂层的摩擦系数低至0.04。     

多医生单设备门诊排程优化

针对国内医院普遍存在预约机制不完善和医患矛盾突出引发的设备诊断依赖度高和病人等待时间长等问题,本研究特别考虑多医生同时诊断、设备检查以及病人设备检查后回诊等因素,建立普通门诊预约排程模型,在验证模型有效性的基础上,结合实际设计了六种排程规则并进行仿真研究,对提前预约与随机到达病人的比例、预约时间长度作了灵敏度分析,最后通过仿真实验找到相对较优的比例和预约时间值.     

液控单向阀的应用及故障与排除

介绍了液控单向阀的工作原理、类别及应用注意事项,对正确使用液控单向阀避免事故的发生进行了举例说明.同时,也列出了液控单向阀常出现的故障、产生原因及排除方法.对于掌握液控单向阀正确使用的方法、工作规律及维护知识,对改善液压系统,减少事故产生、提高维护液压系统的效率有重要意义.