兰州盆地对亭沟剖面新生代沉积相分析

采用地层对比、古地磁等方法对兰州盆地对亭沟剖面第三纪沉积进行了研究,对兰州盆地对亭沟剖面从东到西进行了描述,对其地层构造及古生物特征进行了对比,并讨论了兰州盆地对亭沟剖面新生代沉积演化.     

GPS技术及其在工程测量中的应用研究

本文对GPS技术研究的背景进行了叙述,对GPS的工作原理进行了阐述,对GPS测量的优缺点进行了分析,并对GPS技术在工程测量中的具体应用展开了阐述,并对GPS测量技术日后的开发应用前景进行了展望。     

试论人口迁移流动对文化变迁的影响

本文对文化变迁的涵义和表现形式作了简要的探讨,重点分析了人口迁移流动对文化变迁的影响。不仅分析了人口迁移流动对文化涵化、互化与融合的影响,而且分析了人口迁移流动对文化冲突与整合的影响。关于人口迁移流动对文化变迁的影响的分析,文章不仅分析了影响的作用机理和过程,而且从人口迁移流动的不同类型分别进行了影响分析。文章最后提出了人口迁移流动对文化变迁的影响趋势。     

京津地区消防队员心理健康状况调查

运用问卷调查的方法对京津地区部分消防队员进行了抽样调查,对调查结果进行了分析,通过调查了解了消防队员的心理健康情况,探讨了工作应激对消防队员心理健康的影响,并提出了建议。     

关于智能家居系统的探讨

本文介绍了智能家居系统的基本概念,对其功能和用途进行了论述,分析了当前国内外智能家居系统的使用状况。从不同角度对国内智能家居系统进行了分类,对智能家居的系统优势及发展方向提出了自己的观点。对"通讯网络架构"这一核心技术进行了深入的阐述,并对其在工程中如何选择提出了一些建议。     

某高层建筑地下室剪力墙开裂事故的鉴定与处理

本文通过对混凝土强度、水泥安定性、钢筋配置的测试,以及对建筑图纸和施工过程的研究,对某高层建筑剪力墙开裂进行了原因分析,对裂缝的预防采取了相应措施,并对裂缝开裂提出了补救方案。     

轮对加装扣环方案的强度分析及评定

为了防止机车组装式车轮因轮箍弛缓造成的机车脱轨事故,提出了轮对加装扣环方案,针对该方案建立了轮对有限元模型,按实际工况及受力状态分别对加扣环轮对和不加扣环轮对在磨损到极限的情况下进行了强度分析,并对计算结果进行了比较和评定,为保证铁路机车运行安全提供了理论依据.     

浴室装修的选择与使用

对浴室内所有用品进行了分析,从使用的舒适性、价格及制造材料等方面进行了论述,指出了当前人们对卫生间内用具的需求,同时对卫生间附属设备进行了研究,达到了满足人们使用的目的,解决了目前人们对家庭装饰疑惑的问题。     

对招投标评标方法中复合标底法的分析

介绍了评标的目的及其现状,对评标办法进行了分析,阐述了投标人的报价对复合标底的影响情况,并对单价入围率对总分的影响进行了计算分析,以使招投标公平合理。     

某住宅楼结构可靠性检测与鉴定

分析了某多层砖混结构住宅楼承重墙裂缝的成因,对裂缝的分布和走向进行了现场调查,对结构的混凝土强度和砌筑砂浆强度进行了测试,对房屋的沉降值和倾斜度进行了测量,并对结构进行了计算分析。综合各项检测结果,对结构可靠性进行了鉴定评级,并针对不同部位裂缝提出了相应的处理建议。     

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.     

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。     

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。     

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.     

建筑设计创作中的地域文化探索——合肥文博苑创作体会

探索地域文化的发展是民族发展的重要课题。合肥文博苑建立在新城区,作者在其建筑与环境的创作中,既保持合肥地域文化传统,又体现现代文化精神。     

钢结构在建筑结构设计中存在的问题分析

钢结构技术在建筑工程设计领域应用范围不断扩大,但是其中也依然存在着很多问题,例如质量不过关、设计方案存在瑕疵、钢结构设计深度不足等。本文在研究过程中对钢结构在建筑结构设计当中所存在的问题展开分析,希望能够给其他工作人员提供一定帮助。     

探地雷达在福州某路面塌陷勘察中的应用

探地雷达因其快捷、经济的特点,在现今城市道路勘察中得到了广泛的应用。结合对福州某路面塌陷的勘察实例,介绍了探地雷达剖面法的工作方式及其原理,在该工程得到的雷达剖面上认清了路面下方的管线和地层的分布情况,从而对塌陷区域周边是否还会继续塌陷进行了评价。     

The role of bromide in the dissipation of chlorine in sea-water

Chlorinated natural waters with a wide range of salinities are used as coolants in coastal power plants. When chlorine is added to waters of different salinities, the concentration ratio of bromide, a major constituent of marine waters, to the added chlorine can significantly alter the rate and mechanism of the dissipation of chlorine. In this study, the bromide concentration was varied by one of three methods: by diluting sea-water with de-ionized water, adding bromide to river water and collecting natural waters at various salinities. In the first and second methods both the concentration of bromide and the concentration as well as the composition of dissolved organic matter were altered in a predictable and systematic manner. In the third method, only the concentration of bromide can be varied in a controlled and systematic way. The behavior of chlorine in these waters at doses of 10, 5 and 1 mg l⁻¹ were examined. The molar ratio of bromide to added hypohalite ranged from < 0.1 to 60. Higher chlorine demand was observed when hypohalite existed primarily as hypobromite rather than hypochlorite. The consumption of hypohalite occurred in two stages. The increase in chlorine demand in the presence of bromide was due primarily to the elevated initial chlorine demand occurred during the first stage although the rate of chlorine consumption in the second stage might also increase from a solution containing mostly hypochlorite to one dominated by hypobromite. In estuarine waters, the unpredictable combined effects of the changes in the concentration of bromide and the concentration as well as the composition of dissolved organic matter led to randomly variable chlorine demand from one location to another. Thus, if chlorinated estuarine waters of variable salinities are used as a coolant, empirical studies on the chlorine demand of the waters must be made at frequent intervals in order to avoid overchlorination or underchlorination.     

连云港盐渍土中混凝土耐久性研究

通过调查连云港盐渍土,分析其盐分类型以及含量分布,并评价土壤的腐蚀性,指出连云港盐渍土属于氯盐盐渍土,对钢筋的腐蚀性为中等腐蚀性。盐分随土层深度呈现半抛物线形式分布。综合考虑混凝土中氯离子的扩散过程以及混凝土的吸附作用,建立氯离子运移方程。根据盐渍土中盐分分布特点,对土层分层,采用有限差分的方法计算不同年代混凝土内部氯离子含量分布状况,并对比不同混凝土保护层厚度下钢筋表面最大氯离子溶度,指出混凝土保护层厚度至少大于5cm。