UDS协议在商用车后市场的应用

随着控制技术的不断发展,商用车上的电控系统不断丰富,这为后市场解决车辆故障提供了新的方式。通过UDS诊断协议,维修人员能够直接读取故障信息和车辆运行情况,操作车辆打开特定功能,还能对控制器进行数据或程序的升级,缩减服务时间,增加服务质量,提升客户满意度。     

用标准化全烃值进行地层对比

全烃测量值由于受客观影响因素较多,在以其值高低进行单井纵向及井间横向对比时往往可比性不够理想,该文采用两种方法对全烃进行归一化处理后再进行对比,实际证明效果明显。     

ARM Cortex-M3微处理器测试方法研究与实现

作为32位RISC微处理器主流芯片,ARM芯片得到长足发展和广泛应用。因而,ARM芯片的测试需求更加强劲的同时,测试工作量在加大,测试复杂度也在增加。本文给出了基于ARMCortex-M3的微处理器测试方法,该方法也可用于类似结构的微处理器测试。     

寒冷和潮湿季节的网印制版

每年的11月份以后天气日趋变冷,特别是在北方,很多地方已开始供暖。即使在沿海的广东,也是忽冷忽热的,例如深圳去年的最低温度也降到了（4～5）℃;而到了每年的六七月份又是非常潮湿的季节。     

海外赛博朋克研究前沿问题追踪

赛博朋克是科幻小说的一个流派,它关注高科技语境下的边缘人群.与传统科幻小说不同的是,赛博朋克叙述的科学技术不仅是可能发生的,而且有些技术处于正在使用状态.目前学界关注的热点是:关于威廉·吉布森的<神经漫游者>的研究;关于赛博朋克主题的研究,包括人类未来的赛博生活与精神生活;还有蒸汽朋克的研究.赛博朋克在顺应、预测人类可能的生活的同时,也从人文精神角度对人机生活的诸多问题进行了反乌托邦式的反思,而这种反思正是单一科学主义的解毒剂.     

新时期我国的政党外交与和谐世界构建

政党外交是国家总体外交的重要组成部分,是政府间外交的重要补充.倡导和谐世界建设,为中国共产党的对外交往活动注入了新的内涵.新时期,在继续坚持党际关系四项原则指导地位的同时,我国政党外交在理念和实践上都要适应和谐世界建设的需要,积极参与国际治理,为创造一个有利于我国和平发展的外部环境而不懈努力.     

Effects of phospholipid hydroperoxide glutathione peroxidase mRNA expression on meat quality of <Emphasis Type=Italic>M. longissimus dorsi</Emphasis> in pigs

Antioxidant enzymes protect muscle tissues against oxidation from reactive oxygen species and increase the stability of the muscle. Phospholipid hydroperoxide glutathione peroxidase (GPx4) is an important antioxidant enzyme in muscle tissue. So the aim of this study was to identify the effects of mRNA expression level of GPx4 gene on meat quality properties in Longissimus dorsi of three pig breeds. Total 36 pigs (12 pigs for each breed) were used to measure the meat quality properties and to analyze the expression levels of GPx4 gene by quantitative real-time PCR. The results showed that meat quality, GPx4 activity, and GPx4 mRNA levels were affected by pig breeds. There were the lowest expressible moisture, drip loss, and cooking loss in Laiwu Pig among the three breeds, and also there were the highest GPx4 activity and the expression levels of GPx4 gene in Laiwu Pig compared with the other two pig breeds. Analysis of meat samples divergent for water-holding capacity identified highly negative associations between expressions levels of GPx4 gene and expressible moisture, drip loss and cooking loss. These results suggest that the higher mRNA expression level of GPx4 gene up-regulate the water-holding capacity and the activity of GPx4, and the expression of GPx4 gene plays an important role in physiological changes related to the meat quality properties and the mechanisms of the antioxidant ion of meat.