南召透闪石—透辉石在陶瓷中的应用研究

南召老庄透闪石－透辉石矿是河南省首次发现与评价的一个特大型矿床。用透闪石－透辉石矿作陶瓷原料生产釉面砖，与同条件硅灰石质配方相比，具有烧成温度更低、产品性能更好、成本更低等优点。     

沥青搅拌站除尘设备工作原理及改进方法

本文详细论述沥青搅拌站袋式除尘器工作原理，分析了影响该除尘器工作效率的因素，提出了改进方法，对同类型除尘系统的沥青搅拌站的改进和维修具有一定指导意义。     

2000年以来发布的有关暖通空调专业的部分国家标准和行业标准

列出了2000年以来发布的部分供暖供热、空调制冷、节能、通风除尘、洁净技术、计算机及网络技术、防火排烟、给水排水、减振降噪、环境保护、室内空气品质、材料与设备等标准．以及有关设计、验收规范和一些综合类标准。     

医学中心规划趋势探讨

本文依据笔者近20年来的医院规划实务操作与医学空间研究,归纳出对大型医学中心(medical center)之空间规划设计理念及使用后评估观察成果,借由对医院空间特性之分析,提出可变与不可变之医院空间组织系统的建立原则,期待以更先进之医疗建筑来保障健康。     

依靠科技促进发展加快发展诚邀合作

上海于2003年获得园林城市称号.新一轮的城市绿化将按照建设现代化国际大都市的目标,以2010年上海承办世博会为契机,创造良好的生态环境,实现"城市,让生活更美好"的办会主题,为此,上海绿化管理局诚邀国内外专家参与上海的新一轮绿化科研工作.     

配筋混凝土空心小砌块墙温度裂缝研究

本文针对目前困扰混凝土砌块墙体主要问题之一的温度裂缝问题,就其型式、成因等展开了较为全面的讨论和总结,并以云南大学文津楼砌块墙体为例,就砌块墙体的温度裂缝的产生和发展做了有限元模拟分析。最后,通过试验研究,总结出了一些行之有效的混凝土空心小砌块墙体温度裂缝的防治措施。     

城市规划的先导作用--青浦的探索

文章讨论城市规划对城市发展建设的影响，从政府与市场的关系开始讨论，一直谈到规划的作用与政府角色，以上海市青浦区的实践为例，论述城市开发操作过程中的政府角色问题，得出政府与市场合作的创新理论与三种模式。     

宝山:规划建设中的现代化滨江新区

1区域性质、规模和发展目标1.1区域性质上海北翼连接长江三角洲沿江城市发展带上的重要门户;世界级精品钢制造以及物流等相关产业集聚辐射区;上海国际航运中心的重要组成部分;生态、生活、     

Numerical study on erosion of a pipe bend with a vortex chamber

Abrasive erosion at bend is a common issue in gas–solid pneumatic system. Vortex chamber design is one of the specialized designs that offers promising prospect at reducing erosion. The performance of design is still relatively unknown in the literature. The aim of this work is to study the effect of basic erosion variables such as the flow Reynolds number, the particle Stokes number, and the vortex chamber size. The results show that the vortex chamber always reduces the erosion in comparison to the common radius bend, and it is more effective at higher Reynolds number. Increasing the chamber size reduces the erosion but the most significant reduction happens when the chamber size to the pipe diameter ratio is increased from 1 to 1.25. The chamber size influences the erosion differently at different Reynolds number. Trends describing these effects were obtained through trial-and-error approach. The particle Stokes number has nonunique effect on erosion. Increasing Stokes number through increasing Re increases the erosion while increasing Stokes number through decreasing Re_p decreases the erosion.     

Differences in lithospheric structures between two sides of Taihang Mountain obtained from the Zhucheng-Yichuan deep seismic sounding profile

A 2-D model of lithospheric velocity structures in the southern part of the North China Craton was obtained using data from the Zhucheng-Yichuan deep seismic sounding profile.Results show that there are great differences in lithospheric structures between two sides of Taihang Mountain.In the eastern region,the lithosphere is thinner,with a thickness of about 70-80 km,while in the western region,the thickness is 85-120 km.There is a jump of the lithospheric thickness across Taihang Mountain gravity anomaly b...