EFFECT OF METHIONINE ENKEPHALIN ON MIGRATION OF MACROPHAGES FROM MICE WITH IMPAIRED LIVER

The increased plasma methionine enkephalin(M- Enk) concentration in patients with liver dis-eases indicates an alteration of the immune func-tion in these patients[1] .Since the effects of opioidpeptide on modulation of immune system in humanbeing and animals under normal condition havebeen revealed,more interest has recently been fo-cused on conditions in stress as liver impairment[2 ] .An attractive trend has emerged in the pastdecadethat in stress some neuropeptides may be secretedand relea…     

与『神六』赛跑

“神州六号“上天那天早晨,急于看现场直播的我下班后便骑上摩托车往家赶. 　　天阴沉沉的,要下雨了.不知道发射现场的天气是否也是这样?虽然路面坑坑洼洼,不过我的车速仍比平时快了许多,此时我只想在“神六“升空前赶回家,因此从某种意义上说,这是我在和“神六“赛跑呀! 　　……     

钢夹层板数值模拟技术(英文)

Sandwich plate systems (SPS) are advanced materials that have begun to receive extensive attention in naval architecture and ocean engineering. At present, according to the rules of classification societies, a mixture of shell and solid elements are required to simulate an SPS. Based on the principle of stiffness decomposition, a new numerical simulation method for shell elements was proposed. In accordance with the principle of stiffness decomposition, the total stiffness can be decomposed into the bending stiffness and shear stiffness. Displacement and stress response related to bending stiffness was calculated with the laminated shell element. Displacement and stress response due to shear was calculated by use of a computational code write by FORTRAN language. Then the total displacement and stress response for the SPS was obtained by adding together these two parts of total displacement and stress. Finally, a rectangular SPS plate and a double-bottom structure were used for a simulation. The results show that the deflection simulated by the elements proposed in the paper is larger than the same simulated by solid elements and the analytical solution according to Hoff theory and approximate to the same simulated by the mixture of shell-solid elements, and the stress simulated by the elements proposed in the paper is approximate to the other simulating methods. So compared with calculations based on a mixture of shell and solid elements, the numerical simulation method given in the paper is more efficient and easier to do.     

大力加强运管队伍正规化建设 为现代道路运输业发展提供坚实保障

今年8月底,交通运输部正式印发实施了《关于加强道路运输管理队伍建设的指导意见》,这是在大部制改革之后,在现代道路运输业发展和国家推进事业单位改革的关键时期,出台的一份重要文件,也是各级道路运输管理部门高度关注、广大运管干部职工热切期盼的一件大事。按照部领导的批示要求,为了深入贯彻《指导意见》,围     

预应力锚索框架在整治碎石土滑坡中的应用

黄山至千岛湖公路K19 184 15～ 312 2 6段经过一处滑坡 ,属中型牵引式碎石土滑坡 ,滑体为碎石土 ,滑床为强风化千枚状砂岩 ,采用预应力锚索框架进行滑坡整治 ,可供类似工程设计、施工人员参考和借鉴。     

汽车音响的夏季保养

音乐是行车途中不可或缺的伴侣,汽车音响自然也成为车主特别关照的配置。进入夏季,天气变热,伴随而来的是高温、潮湿、闷热,人开始感觉不舒服,汽车音响也会因热胀冷缩的规律而发生一些变化。夏天应如何保养汽车音响呢？     

节段预制拼装工艺在高铁连续梁中的应用研究

结合郑阜高铁周淮特大桥3-(40+56+40)m双线连续箱梁项目,对铁路预应力连续梁节段预制拼装法施工工艺进行研究。该工艺具有施工速度快、机械化程度高、梁段外观质量好、混凝土质量易控制、合龙后梁体竖向挠度小等优点,具有很好的经济和社会效益。节段预制胶拼法在本项目的成功运用,填补了国内铁路连续梁施工的空白,形成了一套完整工法和标准,代表了未来桥梁施工的发展方向,具有良好的推广应用前景。     

推进“大调研”成果转化应用，开创道路运输工作新局面——交通运输部道路运输司司长李刚在新时期道路运输业发展大调研成果转化应用工作座谈会上的讲话（摘要）

在过去的一年里,各省（区、市）交通运输部门和道路运输管理机构积极迎接挑战、攻坚克难、锐意进取,道路运输管理工作取得显著成绩。再有5天,道路运输司就已组建成立一周年。这一年来,道路运输系统的凝聚力、战斗力、影响力显著提高。道路运输的管理体制更加完善、发展理念更加科学、工作目标更加明确,得到了领导和社会的广泛认可。道路运输工作去年取得的成就,是行业上下共同努力的结果。     

软基路堤沉降计算与稳定验算中所存在的问题

在多年来数条高速公路工程实践的基础上,对目前我国公路行业软土地基路堤沉降计算和稳定验算的过程中所存在的问题进行了探讨,以期引起工程技术人员的注意。     

基于EMD的天然气发动机供气系统故障诊断方法

针对天然气发动机故障信号的非平稳性、非线性等特点,提出一种基于EMD提取能量特征参数的故障诊断方法。从天然气发动机供气系统正常、气门间隙大、排气阀漏气3种工况振动信号的EMD能量熵值中发现,当供气系统发生故障时,各IMF分量的能量会发生变化。因此运用EMD方法提取最有效的IMF分量的能量特征指标,利用C均值模糊聚类法对此特征进行聚类进而建立天然气发动机供气系统的故障识别模型。现场试验验证了该方法在天然气发动机供气系统故障诊断中的有效性。