丹参对大鼠腹腔感染状态下胃黏膜Na~+-K~+-ATPase和pH值的影响

目的　探讨丹参注射液对严重腹腔感染状态下大鼠胃黏膜Na+ K+ ATPase活性变化和胃黏膜内pH的影响。方法　利用大鼠盲肠结扎穿孔造成腹腔严重感染动物模型 ,检测穿孔前和穿孔后 3、6、12、2 4、4 8h各时相大鼠胃黏膜Na+ K+ ATPase活性和胃黏膜内pH的变化。结果　盲肠穿孔后感染组 3hNa+ K+ ATPase活性显著降低 (P <0 .0 5 ) ,12h降至最低 (P <0 .0 1) ,仅为对照组的 4 8.5 % ,4 8h仍未恢复正常 ;丹参组 12h、2 4hNa+ K+ ATP酶活性比感染组显著升高 (P <0 .0 5 )。感染组胃黏膜内 pH值穿孔后 3h即有下降 ,6h明显低于对照组 (P <0 .0 5 ) ,12h下降至最低 (P <0 .0 1)。 4 8h仍低于对照组 (P <0 .0 5 )。丹参组从 12h开始胃黏膜内pH值与感染组显示出差别 (P <0 .0 5 )。结论　严重腹腔感染状态下胃黏膜Na+ K+ ATPase活性和 pHi降低可能是引起胃黏膜屏障功能受损的主要原因。早期应用丹参对有效地预防应激性溃疡的发生有重要的临床意义     

攀田高速公路中面层天然岩沥青改性配合比设计及施工

目前我国高速公路沥青路面有2大主要病害：车辙和反射裂纹。解决沥青路面早期车辙的技术途径较多。在攀田高速公路建设中采用了岩沥青改性中面层以提高沥青路面整体抗车辙能力。主要介绍岩沥青改性中面层的配合比设计、施工及存在的技术问题。     

欧洲标准：道路标线材料—道路标线的使用性能（prEN1436：1997）

1范围 该标准规定了白色和黄色道路标线的使用性能,如在日光和路灯下的反光,辆前灯照射下的逆反射,颜色和防滑性等.     

Torque distribution strategy for integrated starter/ generator hybrid bus implemented by fuzzy algorithm

A torque distribution strategy was designed by using fuzzy logic to realize the optimal control. Thevehicle load zones were dynamically divided into several zones by several torque lines to indicate the driversdemand and the high or low efficient operating areas of the diesel engine. The fuzzy logic controller withtrapezoid membership function and Mamdani rule reference mechanism was utilized. There are over 100 rulesused in this fuzzy-based torque distribution strategy which are sorted into four rule-bases. The fuel economyand acceleration tests were designed to test and validate the integrated starter/generator (ISG) bus perfor-mance using fuzzy-based torque distribution strategy. The fuel economy is improved 7.7% compared with therule-based strategy. Finally the road test results reveal that there is about 157% improvement of fuel economy.And the 0-50 km/h acceleration time is 9.5% shorter than the original bus.     

汽车客运站公共关系研究

探讨了汽车客运站公共关系的内涵,指出汽车客运站公共关系由客运站企业、传播媒介、旅客公众三个要素构成;汽车客运站公共关系经营活动应遵循以事实为基础、以社会效益为依据、以满足公众需求为出发点的原则。     

Control of energy regeneration for electric vehicle

To extend electric vehicle (EV) running distance, the vehicle energy regeneration (ER) method and vehicle control strategy were designed based on the original vehicle braking system. The ER principle of direct current (DC) brushless motor was studied, the motor mathematical model and PI control method with torque close-loop were built. This control method was applied to pure EV and the real road tests were evaluated.The ER control does not make any significant uncomfortable influence brake feeling and can save about 10% battery energy based on 3 times economic commission for Europe (ECE) driving cycles.     

闭环供应链中智能托盘共用的价值研究

随"互联网+物流"产生的智能托盘,为带板运输提供新的发展机遇,而目前对智能托盘应用价值的研究较为缺乏.本文以三级供应链中托盘共用为背景,构建智能托盘与传统托盘混合共用的闭环循环流通系统,将循环周期分为八个阶段,建立系统总成本和效益测算模型,分别以传统托盘返还率、损坏率和智能托盘损坏率为随机变量测算系统总成本与效益.测算...     

基于窗口导航有向图的GUI测试覆盖准则

为评估图形用户界面（GUI）测试用例集的充分性,提出了基于窗口导航有向图的覆盖准则.用有向图中的顶点表示GUI中的窗口,弧表示用户输入,描述用户与GUI的交互关系.基于窗口导航有向图,提出了顶层窗口覆盖、用户输入覆盖和n长度用户输入序列覆盖准则,并设计了相应的覆盖率算法.实验结果表明,符合这些覆盖准则的测试用例集能够达到90%语句覆盖率,且使故障发现率达到79%.     

教师教学质量测评的模糊综合评价模型

将模糊综合评价方法应用于教师课堂教学质量测评上,并给出了4种计算权重的方法,改进了传统的模糊综合评价模型。