渣油催化临氢热转化钼铁双金属催化剂的研究

Replacement of precious single metal catalysts with cost-effective, highly-dispersed composite catalysts for catalytic hydrothermal conversion of residue holds tremendous promise for the residue upgrading technologies. Organic metals were added to the feed as the oil-soluble precursors, and transformed into the catalytic active phases in this work. Physical properties and structures of the composite catalysts had been investigated by X-ray fluorescence spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscope and transmission electron microscopy. The composite catalysts were found to be highly efficient in the catalytic hydrothermal conversion of both model compound and residue. Increased metal dispersion and synergistic effects of two metals played indispensable roles in such catalytic system. Results showed that under the test conditions in the article, the catalyst had the best catalytic performance when the mass ratio of molybdenum to iron was 1.5.     

移动运营商手机游戏业务的战略定位和发展策略探讨

分析了韩国、日本及国内运营商手机游戏业务的发展状况．探讨了手机游戏业务的模式．论述了该业务的战略定位和市场前景。从地区提供给移动通信市场对外部环境、产业链的准备是否充分以及运营商内部的资源和运营状况等三个方面阐明了手机游戏业务发展的关键因素。     

浅谈工程成本管理信息化

企业管理者一直以来都是利用各种各样的信息来帮助实现他们企业经营的目标。因此．信息管理对于企业经营者来说并不是新课题．但如何获得最准确的信息和如何更有效地使用信息却是企业管理者面临的难题。计算机的出现使这一切成为可能。现代管理科学和计算机技术、信息技术相结合是企业管理发展的方向．特别是在工程项目管理中，涉及到业主、设计方、承包商、施工方、材料供应商、监理等各方，他们之间存在着信息不对称且代表利益不同的特点，所以构建一个信息平台，保证沟通交流的顺畅进而发展到对项目进行管理．是建筑企业当务之急。     

录像机软件伺服控制定时一体化技术

分析了当前录像机伺服控制系统和定时器系统相分离的两ＣＰＵ结构的缺点和局限，进而提出了伺服／控制／定时系统一体化的方法，给出了数字软件伺服系统的模型，并设计了适用伺服环路的数字补偿滤波器。所有功能均在单片微处理器ｕＰＤ７８４９１５上编程实现，得预斯的结果。