轻质隔墙技术在装配式建筑工程中的应用

装配式建筑(装配式轻质隔墙)具有经济、节能、环保、施工等优点,越来越受到青睐。文中简述了轻质隔墙的种类与材料技术要求,分析了轻质隔墙技术在装配式建筑中的施工技术要点。     

公路泡沫轻质土路基施工技术分析

以实际公路工程项目为例,首先分析了泡沫轻质土路基特点,然后从施工参数、泡沫轻质土制作、侧向挡板安装、泡沫轻质土输送、轻质土浇筑以及养护方面重点研究了泡沫轻质土路基施工技术.实践表明,采用泡沫轻质土路基施工技术有效控制了工后沉降,并且提升了路基结构强度及承载力.     

低膨胀大口径轻量化石英玻璃反射镜

文章从轻量化反射镜的材料以及制造方法等方面对国内外大口径反射镜的轻量化技术进行了讨论,分析了轻型反射镜技术的现状和发展趋势。总结了玻璃基轻质反射镜、Si C基轻质反射镜、金属基轻质反射镜及复合型轻质反射镜的研究现状。比较了轻质反射镜制备方法和性能的优缺点。文章重点分析了低膨胀大口径轻量化石英玻璃反射镜的制造工艺。     

轻质土技术在土木工程中的应用

对轻质土材料的制作工艺及其在土木工程中的应用进行了论述,指出了轻质土技术的研究趋势及WEPS混合轻质土及气泡混合轻质土在土木工程中将有广泛的应用前景。     

狭小管井墙体与管线施工综合技术

中国人民大学教学科研楼对狭小管井轻质隔墙板墙体与管线安装施工中,综合应用混凝土反坎一次浇筑成型技术、管井后浇板与管线套管安装一体化技术、BIM管线综合及轻质隔墙板拼接深化技术、轻质隔墙板新型连接技术、管线安装与轻质隔墙板穿插组织施工技术等,解决了狭小管井墙体与管线安装的技术和管理难题,实现了狭小管井墙体与管线高质量的目...     

LPM轻质材料填充空心楼盖结构技术

结合LPM轻质材料填充空心楼盖结构技术在北京青年路住宅小区配套学校工程中的应用,从LPM轻质材料填充体的构造特性、施工工艺、技术措施等方面,介绍了LPM轻质材料填充空心楼盖结构技术及其优点,可为同类工程所借鉴和参考。     

重油轻质化加工技术

本文分析了重油轻质化加工技术在石油加工中的重要地位,系统地描述了独立单一的重油轻质化的加工工艺和组合加工方案,并简单的介绍了方案的选择。最后,在对重油轻质化加工技术进行的总结的基础上,对其未来的发展提出建议。     

上覆硬壳层软基气泡混合轻质土施工技术及工程实例

基于气泡混合轻质土作为路基填料的优点,介绍上覆硬壳层软基气泡混合轻质土的施工技术及流程,结合工程实例,验证了上覆硬壳层软基气泡混合轻质土在路基填筑中应力扩散、沉降小的技术优点。     

JQT轻质隔墙板安装技术工艺

总结了JQT轻质隔墙板的优点，从作业条件、进场材料要求、施工准备、安装技术及安装要求等多方面详细地介绍了JQT轻质隔墙板安装工艺，并指出该技术能完全解决上墙裂缝问题，以推广JQT轻质隔墙板的应用。     

气泡混合轻质土在道路加宽中的应用

针对常规道路加宽的不足,简单介绍了气泡混合轻质土的概念、主要性能、加宽优势及施工质量控制方法,并结合扩建工程气泡混合轻质土试验段施工过程及监测结果,对采用气泡混合轻质土技术进行高速公路加宽的可行性和优势做了分析,以推广该技术的应用。     

污泥制砖存在问题浅析

污泥制砖符合国家的环保政策,但在技术方面还待进一步创新和突破。为此分析了污泥制砖在技术方面、环保方面和社会大众认可方面存在问题及相应的改进措施。     

干旱区绿洲环境下的新疆小城镇建设投资

一、研究区域基本现状新疆地处欧亚大陆腹地,地貌轮廓表现为“三山夹两盆”,山地与平原的面积大致各占50%,镶嵌于戈壁沙漠的绿洲仅有7万平方公里。新疆土地面积166.49万平方公里,占全国总面积的六分之一。气候干旱,荒漠广布,是中国最大的干旱区,是亚洲干旱核心区,也是世界上著名的干旱区之一。水资源短缺,生态极度脆弱。新疆2004年底有1950万人,人均GDP已经超过了1000美元,城镇化进入了快速发展阶段,特别是小城镇的发展速度较快。但新疆特殊的干旱区绿洲环境,使得小城镇的发展存在许多问题。一是城镇规模小而散,基础设施配套差,城镇集散和…     

Levels of manganese in the urine of female farmers in non-polluted regions in Japan

Nearly 1500 urine samples were collected from female farmers in eight regions widely scattered in the islands of Japan in the winter of 1987-1988. The samples were analysed for manganese by wet ashing and flameless atomic absorption spectrophotometry under strict quality control. The values observed after adjustment for a specific gravity of 1.016 were distributed log-normally with a geometric mean of 0.65 microgram/l and a geometric standard deviation of 2.47. There was no effect of aging or any effect of smoking on the urinary manganese concentration. The inter-regional difference may be present but not yet conclusive. As no sex difference was observed in a previous study, it may be possible to deduce that the value may possibly stand for the "background" level of both men and women, either smoking or non-smoking, among the general Japanese population. The observed value is discussed in comparison with values reported in the literature.     

Typification of Fires in Buildings in Spain

Although the Dirección de General de Protección Civil (DGPC), an agency of the Spanish government, has been responsible for the collection of data and the statistical analysis of fires since 1985, it has not as yet issued any reports. It is true that a couple of studies have been made, but in neither case did they use a standardized methodology but relied simply on the heterogeneous information provided by the fire brigades which cooperated in the studies. At that time Spanish fire brigades did not have special units for professional fire investigation, nor was the information derived from standardized methodologies suited to research purposes. In addition, information was extremely scarce and basic, focussed only on the fire, the use of the building and personal data of the victims. In this context, the project for a Fire Investigation Unit in the Fire Brigade of Málaga (the sixth largest Spanish province in inhabitants) was set up. Although inspired in the methodologies used in the USA and in the UK, the aim was to create a customized methodology for the first scientific investigation of fires in Spain. Our research was conducted in 2007. Using the methodologies of the USA and the UK, our own methodological approach and the Spanish regulations, we drew up a questionnaire with 110 variables arranged into 6 modules. We studied 96 fires out of the 154 emergency fire calls received in 2007, having omitted some emergency calls for various reasons. Our results revealed that it was necessary to generalize the installation of fire extinguishers in residential buildings, to train the general public in the use of these devices, to promote the use of fire and smoke detectors in residential buildings, to encourage the inspection and control of old electric installations and to monitor the new installations, to generalize the implementation of emergency and evacuation plans and to design new systems and materials for the cabinets where hand-held extinguishers are stored.     

分光光度法测水中余氯

介绍了用双硫腙分光光度法测定水中余氯的新方法，阐述了其测定试验过程，根据试验结果显示，其结论符合国家标准，表明该方法可用于自来水等样品中余氯含量的测定，结果比较准确。     

Intersections of inequality in homeownership in Sweden

Abstract

Inequalities relating to ownership of housing have become a major issue de jour in many Western societies. This article examines how the distribution of homeownership in Sweden relates to two factors widely seen as significant to such inequalities, namely parental tenure status and place of birth. We use longitudinal registry data to examine the bearing of these two factors on individual-level tenure progression since the beginning of the 1990s for persons at different stages of their housing careers. We extend existing understandings of Swedish homeownership patterns by demonstrating that inequalities relating to place of birth and parental tenure intersect with one another in ways that substantially advantage certain subgroups while disadvantaging others, and by demonstrating that experiences of entry into homeownership have in recent years been changing in markedly different ways for these different subgroups. Overall, Swedish homeownership inequalities, far from dissipating, appear to be hardening along existing lines.     

莳花在城市绿化中的应用

目的:花化、香化、彩化已成为城市园林绿化的主要趋势,也是为满足人们对环境要求越来越高的一种心境。方法:选择采用莳花能表现出品种繁多,色彩艳丽等不同的方式,从而能在很大程度上丰富了植物造景的层次感要求。结果:能使其达到美化环境、增添节日气氛、提高绿化品质等方面有着突出的作用。结论:莳花造景对城市的美化可达到立杆见影效果,从而提高城市的形象和品位。     

日本城市浅层地下空间利用的新成就

本文结合日本川崎市站前广场和神户市哈巴兰德地区的立体化再开发，分析介绍当前日本浅层地下空间开发利用的成就和特点。     

遗传算法在边坡稳定系数计算中的应用

边坡稳定性的关键问题是确定最危险滑动面(潜在最危险滑动面)和边坡的稳定系数。国内外一般是采用先假定边坡滑移模式,然后近似确定最危险滑动面,再求近似的边坡稳定系数的方法来分析边坡的稳定性,但假设的边坡滑移模式难以反映边坡滑移的实际状态。因此本文探索利用遗传算法搜索最危险滑动面,并得到最小稳定系数及对应的最危险滑动面曲线,取得了较好的效果。     

地质情况复杂地区高速公路隧道地质预报研究

针对地质情况复杂地区垫邻高速公路设计、施工中的具体问题，从地质预报的方法、原理方面入手，对地质情况复杂地区高速公路隧道施工中的地质超前预报工作进行了深入的研究，在分析归纳的基础上，提出合适的工作方法。