塔里木盆地周缘凹陷带含油气特征及勘探前景

在塔里木盆地周缘发育有8个中、新生代的凹陷,即北部的阳霞、拜城、乌什凹陷,西南的喀什、叶城凹陷,东南的民丰和若羌凹陷,以及东部的英吉苏凹陷。在东部、北部、西南部的5个凹陷中已发现油气田。周缘凹陷带发育以侏罗系为主体的烃源岩、以碎屑岩为主体的多套储盖组合以及多种成因类型的构造圈闭。从已发现油气分布特点看,主要受生烃中心、深大断裂以及构造带等因素控制。以晚期成藏为主的周缘凹陷带具有巨大的勘探潜力,特别是勘探程度很低、尚未获得突破的乌什凹陷及塔东南凹陷带也是不容忽视的勘探领域。     

Birefringent coating and timing belt performance

Using a birefringent coating technique, stress separation is carried out on a tooth of a timing belt by two approaches to the shear difference method. The analysis is performed by approximating the composite belt to a non-homogeneous body made up of two distinctly different homogeneous isotropic materials. The results from the two approaches are found to be in very close agreement.     

同步齿形带传动的优化设计

以带长、带宽、中心距作为目标函数,对齿形带结构参数的优化设计进行了探讨.例题中使用了内点惩罚函数法.文中的公式可用于齿形带的程序设计中.     

长冲程抽油机传动胶带悬垂状态下力学特性研究

研究了长冲程抽油机传动胶带悬垂状态下的力学特性，给出了相应的胶带运动微分方程和等效弹性模量的计算公式，为正确地确立长冲程抽油机的有关参量，并实现其各项经济技术指标提供了理论依据。     

混凝土结构连续施工技术在首都机场的应用

本文介绍首都机场3号航站楼2号飞机滑行道桥在超长钢筋混凝土墙体中使用膨胀加强带及增加温度应力钢筋提高混凝土自身的抗拉性能,控制混凝土收缩裂缝的技术措施。     

略谈高层建筑地下室防水、抗渗的几项措施

本文通过对我司在厦门建造的十栋高层建筑地下室施工过程防水、抗渗资料的分析，着重强调结构自防水的重要性，阐述防水混凝土施工防水、抗渗的几项主要的措施。     

重点成矿区（带）的地球物理问题

本文从有色地质系统重点成矿区（带）工作的实际出发，重点论述了新一轮重点成矿区（带）的地球物理问题。强调五万分之一比例尺的地球物理成矿预测工作；突出区（带）工作以地质为基础、多学科参与的综合性；重视方法投入的针对性及有效性；注意区（带）地球物理资料处理的实用性和先进性。     

天然气球罐与管道选材的探讨

对天然气球罐、管道及其防腐层的选材进行了技术经济比较。对3000m^3以下的球罐选用国产16MnR钢板，对5000m^3及以上的球罐采用进口CF-62高强钢板。球壳结构型式选用4带混合式。对高压次高压燃气管道，若公称直径不大于400mm，采用直缝高频电阻焊(ERW)钢管；否则，采用UOE成型的直缝双面埋弧焊(LSAW)钢管。对中压燃气管道，若公称直径不大于200mm，采用PE管；否则，采用ERW钢管。管道防腐宜采用三层PE复合结构防腐涂层牺牲阳极保护。     

Do states upgrading to primary enforcement of safety belt laws experience increased daytime and nighttime belt use?

As of 1 January 2007, 26 states and the District of Columbia have enacted primary enforcement of their safety belt laws, which allows law enforcement to stop motorists and cite them solely when they observe a vehicle occupant who is not wearing a safety belt. Interrupted time series analyses were used to determine whether six states which upgraded to primary enforcement laws experienced changes in nighttime (9:00 p.m. to 4:59 a.m.) and daytime (5:00 a.m. to 8:59 p.m.) safety belt use based on proxy estimates from fatal crash-involved vehicle occupants. Nighttime and daytime safety belt use increased in five of the six states after the primary enforcement laws were enacted. Because the methods used in these analyses reduced the likelihood that these increases resulted from preexisting secular trends towards increased belt use, the results provide strong support that upgrading from secondary to primary enforcement increases occupant safety belt use during both daytime and nighttime periods.     

The lack of an adult seat belt law in New Hampshire: live free and die?

New Hampshire (NH) is the only state with no adult seat belt law. The lack of a restraint law may stem from a reluctance to infringe on individual freedoms. Dartmouth-Hitchcock Medical Center (DHMC) is located in NH, only 4 miles from the Vermont (VT) border. As a result, residents of both states are well represented in the Emergency Department (ED) population. This provided an opportunity to investigate the relationship between opinions, behaviors and the presence or absence of a restraint law. Adult DHMC ED patients were surveyed with respect to seat belt use in states with and without restraint laws, risk taking behaviors, and feelings of infringement on personal freedom. The results demonstrated no difference in restraint use between NH and VT residents while traveling in a state with a seat belt law. However, significantly fewer NH residents reported restraint use when traveling in a state without a seat belt law. These dissimilarities were not explained by differences in risk taking behaviors or by differences in feelings of infringement on freedom. This suggests that actual seat belt use reflects adherence to the law rather than concerns over personal freedom. This may inspire a reassessment of the acceptability of an adult restraint law in New Hampshire.