结晶器液面自动控制系统在唐钢板坯连铸机的应用

介绍了涡流法和同位素法2种结晶器钢水液面自动控制检测方式,及其在唐钢板坯连铸机的应用.     

中国民航信息系统现状及发展展望

介绍了中国民航信息系统的现状和与实际业务需求的差距,接着从系统设计理念、核心系统、新系统新功能和信息系统整合等多个方面详细阐述了民航信息系统的发展思路,最后强调了建立新一代民航信息系统的紧迫性,具备很强的指导意义。     

高耸构筑物施工控制措施

通过具体工程实践,在吸收现有滑模工艺技术的基础上,对平台扭转、中心垂直度控制等关键工艺进行创新,为提高工程质量提供技术保证,达到了创省级优质工程的效果。     

A polydispersed particle system representation of the porosity for non-saturated cementitious materials

In this paper, the porosity of cementitious materials is described in terms of pore size distribution by means of a 3-dimensional overlapping sphere system with polydispersivity in size. On the basis of results established by Lu and Torquato [B. Lu, S. Torquato, Nearest-surface distribution functions for polydispersed particle systems, Phys. Rev. A 45(8) (1992) 5530-5544] and Torquato [S. Torquato, Random Heterogeneous Media: Microstructure and Macroscopic Properties. Springer-Verlag: New York, 2001] providing relations for nearest-neighbor distribution functions, the volume fraction of pores having a radius larger than a prescribed value is explicitly expressed. By adopting an appropriate size distribution function for the sphere system, it is shown that the pore size distribution of cementitious materials as detected for instance by mercury intrusion porosimetry (MIP), which generally points out several pore classes, can be well approached. On the basis of this porosity representation, the evaluation of the capillary pressure in function of the saturation degree is provided. The model is then applied to the simulation of the saturation degree versus relative humidity adsorption curves. The impact of the pore size distribution, the temperature and the thickness of the adsorbed water layer on these parameters are assessed and analyzed for three model materials having different pore characteristics.     

Hydrocarbon exploration risk evaluation through uncertainty and sensitivity analyses techniques

The evaluation of the exploration risk in the oil industry is a fundamental component of the decision process related to the exploratory phase. In this paper the two basic components of the exploratory risk: trap geometry and trapped hydrocarbon quantities (fluid), are compounded in a single coherent uncertainty and sensitivity approach. The results clarify that the model geometry influences each Petroleum System Modeling step and that the geometric uncertainty is correlated with the fluid uncertainty. The geometric uncertainty evaluation makes use of geostatistical techniques that produce a number of possible realizations of the trap geometry, all compatible with available data. The evaluation of the fluid uncertainty, through a Monte Carlo methodology, allows us to compute the possible quantities of oil and gas, generated in a basin and migrated from the hydrocarbon source location to each single trap. The final result is the probability distribution of oil and gas for each trap in the basin, together with other useful indicators like: the hydrocarbon filling probability map, the closure probability map, the drainage area probability map, the spilling paths probabilities, the trap-filling scenarios.     

塔河油田S105井-S106井-S117井井区盐下奥陶系油气成藏条件分析

为了探索塔河油田石炭系盐下奥陶系储集层发育特征及成藏条件,实现新地区、新层位、新领域的突破,进一步扩大塔河油田外围盐下奥陶系含油气范围,实现增储上产,利用率先在盐下奥陶系完钻的S105井、S106井、S117井的地质录井、测井、测试等资料,结合区域地质资料,对S105井-S106井-S117井区内盐下奥陶系的区域构造特征、油源条件、储集条件、储盖组合、圈闭条件及油气藏类型进行了分析,得出的结论是盐下奥陶系恰尔巴克组-一间房组发育地层不整合-岩溶裂缝型圈闭,且油源充足,储集层发育,圈闭条件良好,易于油气成藏,指出了盐下奥陶系的勘探开发前景。     

浅谈水文过河缆道建设施工过程中的质量控制

应用水文过河缆道测验在传统水文测验中是一种行之有效的测验手段。本文主要结合黄河水文近年来开展的水文测报水平升级活动和现代化建设过程中取得的成功经验,分析说明水文过河缆道建设施工过程中的质量控制措施和方法。     

专用超大规模集成电路在LED显示系统中的应用

自1976年蒙特利尔奥运会采用了第一块黑白视频显示屏以来，各种大屏幕特别是LED显示屏得到了迅猛发展，在现代信息社会中更是随处可见。在这些显示系统中，应用了大量的不同种类的集成电路作为驱动芯片。本文叙述了运用于LED显示系统中的超大规模集成电路的强大功能。     

CAMC-IP型二轴运动控制电路的功能及应用

CAMC-IP是韩国AXT公司开发的二轴运动控制电路,详细介绍CAMC-IP的主要功能、特点及其内部结构,简要介绍以CAMC-IP为核心的基于PCI总线运动控制卡的设计.     

中国水工程移民补偿机制发展与改革

对我国水工程移民经济补偿政策发展进行了历史性的回顾;剖析了当前水工程建设征地补偿和移民安置中经济补偿存在的主要问题:土地产权制度问题,土地补偿补助标准测算缺陷问题,工程建设中征地行为不规范问题,征地补助费偏低问题,移民安置规划审批需要改革的问题,国家经济体制和经济建设新形势下移民安置中的新问题;对今后移民经济补偿机制的改革提出了建议:进一步完善征用土地补偿制度,提高征地补偿补助标准,高度重视移民前期工作,强调地方人民政府是移民安置的责任主体,保护移民的参与权与申诉权,制定《中华人民共和国非自愿移民法》。