OCS表面活性剂工业品的界面活性及驱油效率

针对现有三元复合驱油体系化学剂费用投入大,经济效益差的缺点,利用廉价的大庆减压渣油为原料合成了驱油用表面活性剂OCS.测试结果表明,OCS表面活性剂工业品具有优异的降低原油-地层水界面张力的能力,能在较宽的碱浓度和表面活性剂浓度范围内使不同大庆采油厂原油的油-水界面张力降至10^-3mN/m.在无碱条件下,对于大港油田枣园1256断块原油,当OCS活性剂质量分数达到0.2%时,油-水界面张力即可降至10^-3mN/m.大庆原油的平面模型驱油试验表明,OCS表面活性剂、碱和聚合物三元复合体系（ASP）的驱油效率比水驱提高20%以上.     

New Environment-Friendly Approach for Bastnasite Metallurgic Treatment (I): Extraction of Tetravalent Cerium from Sulphuric Acid Medium with Di(2-ethylhexyl) Phosphoric Acid

Bastnasiteisamainsourceofrareearthproducts inwhichCeO2/REOisabout50%.Atpresent,a cidity leachingcombinedwithalkali conversion method[1]iscommonlyusedinthebastnasitetreat ment.Thismethodisunfriendlytotheenvironment becausetheradioactiveelementofthoriuman…     

联想网御动荡牵动业界神经

联想网御内部的一次人事变动,不仅牵动了业界的神经,也引起了社会各方的高度关注。信息安全的影响力透过这一事件再次显现。     

于无声处听惊雷--2005年国内信息安全大事回顾

2005年信息安全领域发生了哪些变化,这些变化对信息安全有哪些影响?是抽苗还是拔穗,表面平静的2005年实在值得人们细细咀嚼。     

谁说鸡毛不能上天--飞天诚信让安全走向国外

在国外做生意更容易 当诸多信息安全公司苦斗域内之 时,这些国内公司似乎并没有发现海外 这一更大的天地会是信息安全产品的另 一淘金宝地。在盘点2005年的业务时, 飞天诚信公司黄煜总经理给出了一个令 人吃惊的数据:今年飞天的整体业务 中,海外市场的销售占三分之一的份     

测量输入光窗台阶指标的指示表的选择

阐述了对近贴聚焦型微通道板像增强管中输入光窗台阶高度和平整度指标进行测量时，所用指示仪表的选择依据，并详细分析了指示表在检定过程中的误差来源，进一步计算出其合成标准不确定度和扩展不确定度，从而选定可用于测试的指标表。     

Use of Fiber Bragg Grating Sensors for Determination of a Simply Supported Rectangular Plane Plate Deformation

A measurement method has been developed to determine the full-field deformation of a simply supported plane plate under transverse load. The method utilizes strain information provided by a set of four fiber Bragg grating sensors mounted on the plate in a way that all sensors measure strains along one certain direction. The sensors were interrogated using a wavelength swept fiber laser. Utilizing the strain information and the first four terms of Navier solution of simply supported rectangular plate, the necessary parameters for determining the deflection could be computed. By substituting the values of x- and -y- coordinates of each position on the rectangle plate, the full-field deformation information can be obtained. Single-point loading tests were experimentally performed to verify the accuracy of the method.     

Visual insights into high-resolution earthquake Simulations.

This study focuses on the visualization of a series of large earthquake simulations collectively called TeraShake. The simulation series aims to assess the impact of San Andreas Fault earthquake scenarios in Southern California. We discuss the role of visualization in gaining scientific insight and aiding unexpected discoveries.     

苯乙烯类嵌段共聚物的生产及市场分析

介绍了苯乙烯类嵌段共聚物(SBC)的国内外生产和消费情况，分析了我国SBC的市场前景，提出了加大研发力度、提高SBC生产术、扩大生产规模、提高国内市场占有率，建设多功能装置等建议。