硫化态加氢精制催化剂的Mo和NiK边XAFS研究

1. Introduction Hydroprocessing catalysts based upon the transitionmetal sulfides (TMS) have been widely used for about70 years. In the early period, some metal compoundssuch as Co, Ni, Mo and W sulfides and their mixtureswere believed to be the most a…     

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文章介绍一种能够连续自动测定微量油水混合流动时分相流量的方法。通过特制的连续测量接内流体的电阻变化,结合电子天平、计算机数据采集系统和相应的计算程序,实现油水分相流量的连续自动测量。自动化程度高,测量精确,采集数据量大,是进行相对渗透率试验（稳态、非态、两相、三相）和岩心流动试验的有用工具。     

关于提高下二门油田注水系统效率的探讨

本文通过对下二门油田注水系统现状和存在问题的分析,提出由于下二门注水系统中注水井压力相差较大,将注水管网由一套改为二套压力,可以降低注水单耗,并提出了具体的改造措施,对其进行了技术经济分析。     

尾矿坝浸润线降深自流排渗技术及应用

针对上游法筑坝坝体浸润线高，危害大、降深难的问题，采用水平孔－竖直袋状砂井联合自流排渗新技术进行排渗。该方法不仅排渗水量大、浸润线降低幅度大、不需动力和维护、而且施工简单快捷，投资费用低，适用于各类尾矿坝浸润线的降深。     

Mathematical models of current losses in bipolar cells

A thorough study of current losses in bipolar cells has been made for the development of the great energy-saving potential of bipolar cells. A proper equivalent circuit for bipolar cells has been proposed, and mathematical methods for computing current losses for all types of polar-ization have been developed. For linear polarization, the current losses can be computed by solving either a tridiagonal matrix or a second-order ordinary differential equation. These values can be used to evaluate the minimum current losses at given conditions. For other kinds of polarization, the current losses can be computed by similar methods if the necessary experiments of measuring the cell voltages of each electrolytic compartment have been made. These values can be used to design practical bipolar cells. Extensive experiments have been made to evaluate the effects of electrode polarization, electromotive force (emf) of the galvanic cell for the for-mation of electrolyzed substance, gaseous products, geometric dimensions of electrolytic cells, specific resistance of electrolyte used, and the total and ordinal number of electrolytic com-partments on current losses. This was the first time such systematic experimental research had been undertaken. Experiments showed that theoretical models were in good agreement with measured data and that DC energy consumption of 0.45 kwh/kg Pb for lead electrolysis from molten chlorides could be achieved in a cell with seven bipolar electrodes. GUANGWEN ZHAO, Visiting Professor, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom     

A novel 3D network coordination polymer consisting of paddlewheel Co3 clusters connected by PO4 and 4-pyridinecarboxylate

The synthesis, structural characterization and preliminary magnetic studies of a novel coordination polymer with paddlewheel Co₃ clusters are reported firstly. In the polymer, Co₃ clusters are covalently linked through PO₄ tetrahedra and 4-pyridinecarboxylate (4-pya) ligands into interpenetrated three-dimensional network.     

知识产权制度在法国企业的地位及作用

介绍了赴法国培训期间对法国企业知识产权管理方面的情况，结合法国企业在知识产权管理方面的经验，谈个人体会及建议。     

提问马岩松

文章记录了《时代建筑》对青年建筑师马岩松的一次书面采访。被访者谈及对数字建筑的理解、对红螺湖会所的建造控制、对形式的回应,以及建筑师通过媒体影响社会的潜力等问题。通过若干案例,解析了建筑师和他的MAD事务所对社会问题的敏感回应以及与资本、决策层交流的策略。