摘要：为了降低双管掺水集油流程高耗气、高耗电问题,可通过调节掺水量、掺水温度等运行参数优化工艺流程,降低加热炉耗气量和泵机组耗电量。针对大庆油田某转油站集输流程的实际运行情况,通过PIPESIM软件建立管网水、热力计算模型,运行迭代法确定不同掺水温度下各单井最优掺水量,根据加热炉、泵机组基础数据确定不同方案下总运行费用。计算结果表明,该集油流程最优掺水温度为47℃,掺水量为840.72m^3/d。此研究为原油集输系统提供了可靠的运行参数优化方法,可实现节能降耗的目标。

摘要：洪泽湖是我省重要的平原水库,具有防洪、供水、水生态和航运等重要功能。近年来,由于圈围种植养殖,洪泽调蓄能力下降,水质恶化、生态退化,影响了洪泽湖综合功能的正常发挥。文章针对洪泽湖圈围存在问题,依据新形势下治水要求,分析对策措施,提出退圩还湖建议。

摘要：Rubber isolation is the most mature control technology in practical application, and is widely used by short rigid buildings. However, many high isolation buildings have been built around the world in recent years, which do not follow the existing criterions and codes. Many researchers began to research the special problems caused by larger height-width ratio isolation structures. The overturning effect of high height-width ratio structures with rubber bearing is firstly studied. Considering the main factors, such as the height-width ratio of structures, type of site, the designed basic acceleration of ground motion and the decouple factor in horizon, computing experiment is defined with the Uniform Design Method, which is also known as designing isolation structure. The forces of the bearing under edge of structures based on the position of the rubber bearing are calculated. The result indicates that the rubber bearings will lose its functionality under very high tension and compressing force of earthquake motion in horizon and vertical, when the height-width ratio is over a certain value. Thus, based on the calculation result of isolation structures defined in the uniform design method, regression analysis is conducted, and also the rubber edge force regression formula are gotten, which has higher correlation and smaller standard deviation. This formula can be used to roughly calculate whether the pull force occurs at the edge of the building. By the edge bearings of isolation structure minimum force formula, the height-width ratio limited value of the isolation structure is deducted when rubber bearing has minimum force of zero.

摘要：本文为湖南长潭公路湘潭段（２２公里）１９９１～１９９３年交通事故的回顾性调查。３年中共发生１６０２起交通事故，伤亡１４２５人，经济损失８８４．６９万元。驾驶员疏忽大意占６８．４％；而肇事车（２４４０辆）半数由湘潭市车辆造成（１１８０辆），且以３年以上驾龄司机为主（７１．２％）。为行为和教育诊断、行为干预设计提供科学依据。