《消防应急照明及疏散指示系统技术标准》在变电站消防应急照明设计中的应用研究

针对《消防应急照明及疏散指示系统技术标准》在变电站消防应急照明设计中的具体应用,本文首先对比了本次新标准与原有规程规范的异同之处,其次结合新标准探讨变电站消防应急照明设计的新思路,最后介绍了新标准在变电站消防应急照明设计中的应用示例。研究结果有效提升了变电站消防应急照明设计的合规性,同时为变电站消防应急照明设计拓展了新思路。     

民用建筑电气设计中智能消防应急照明系统的运用

文章首先阐述了民用建筑电气设计中智能消防应急照明系统的运用优势,然后论述了智能消防应急照明系统的基本构成、机理及系统特征,最后提出了民用建筑电气设计中智能消防应急照明系统的运用,包括应急照明供电方式、智能消防应急照明系统的电源设计、智能消防照明系统的灯具选择和应用。     

消防应急照明与感应技术研究

分析了目前消防应急照明技术现状,阐述了感应消防应急照明灯的工作原理,将感应技术运用到消防应急照明技术上,对促进消防应急照明技术由单一功能向联动型、智能化方向发展以及节能降耗、资源共享、降低成本等起到积极作用。     

消防应急照明和疏散指示系统分析

简述了消防应急照明与应急照明、疏散照明与疏散指示的关系,介绍了消防应急灯具的选型与安装技术,并探讨了消防应急照明和疏散指示系统的电源选择及敷设方式,以供参考。     

应急照明系统在消防联动控制中的实现方案

通过对消防检测常遇到的应急照明系统功能不符合的问题的原因分析,给出了应急照明系统消防联动的几种控制形式和解决方案,并绘出了消防配电联动接口图,从而实现了应急照明系统的消防联动控制功能。     

智能型消防应急照明和疏散指示系统

<正>依据国家标准GB 17945-2010《消防应急照明和疏散指示系统》,深圳市泰和安科技有限公司成功研发推出了TS-C-6001系列新一代智能型消防应急照明和疏散指示系统。该系统融合了多种先进的软硬件技术,完全符合国家标准规定的各项指标要求,系统运行稳定可靠,具有良好的扩展性与可维护性。TS-C-6001系列智能型消防应急照明和疏散指示系统由应急照明控制器、消防应急灯具专用电源、应急照明     

消防应急照明设计若干问题探讨

对消防应急照明和疏散指示系统工程设计中存在的过度设计问题给出优化建议方案。建议有备用照明的场所在非火灾状态下不应使用消防应急照明;给出非火灾状态下使用消防应急照明时蓄电池电源持续供电时间推荐值;对防烟楼梯间或封闭楼梯间消防应急照明的配电回路设计进行分析,提出优化做法。     

应急照明的控制

对应急照明的几种常见工作方式进行了分析，详细介绍了在火灾情况下，消防控制室通过消防联动，对应急照明进行启动控制的方法，并提出了应急照明在整个电气照明设计中的重要作用。     

消防应急照明设计的若干问题及对策

对目前常用的消防应急照明设计做法进行了归纳总结,针对不同做法分析其优缺点,并结合消防应急照明的发展趋势,提出设计观点。     

消防应急照明系统存在的现实问题及解决方法

对消防应急照明系统作了简单介绍,结合工作实践,总结了消防照明系统在实际运用中的不足与缺陷,从日常的监督检查入手,提出了针对性的解决办法,为建筑消防应急照明设计提供了指导。     

非饱和土与特殊土测试技术新进展

全面系统地总结了非饱和土与特殊土测试技术的新进展,内容包括:吸力与水分测试技术,渗流测试技术,变形、应力、强度、孔压、排水测试技术,膨胀土和湿陷性黄土的测试技术,模型试验与大型现场试验技术。文中指出了非饱和土与特殊土的测试难点,对近年来发展起来的成熟的高新技术和国内外学者研制的几十种新设备作了重点介绍,详细阐述了控制吸力的各种方法和提高测试精度的各种措施,并对今后测试技术的发展提出了若干建议。     

砌体结构房屋抗震性能评价与加固对策

针对目前我国现有砌体结构房屋建造年代不一、抗震设防标准不同和建造质量参差不齐的实际状况 ,在进行了大量的调查研究之后 ,选取了一幢具有代表性的房屋 ,依据现行建筑抗震鉴定标准和建筑抗震设计规范 ,按照不同的地震参数 ,用PKPM软件进行计算分析 ,对其抗震性能进行评价 ,得出抗震鉴定结论 .然后由点及面地分析了该类房屋在结构抗震设计方面普遍存在的问题 ,并在此基础之上 ,对加固策略做了初步的探讨 ,提出了看法和建议 .     

DETERMINATION OF SLUDGE COMPOST QUALITY BY BIOASSAY

The paper reports the progress on a plant germination and growth trial as part of Thames Water's quality-control procedure for sludge composting and recycling. The experiment was conducted by cultivating two types of plants in a greenhouse under controlled environmental conditions, using (a) standard peat-based multipurpose compost, (b) Terra Eco Systems multipurpose compost, and (c) woodchip-amended sludge compost.
Tomatoes and petunias were selected for the trial, and the varieties were first-generation (F) hybrid. Germinated seed counts were used to calculate germination percentages and germination values, to assess compost performance. Calculated germination values for tomato and petunias were 26.52 and 17.76 respectively for the peat-based compost: the values of tomato plants for Woodchip-amended compost and Terra Eco compost were 17.80 and 11.84 respectively; and for petunia, all composts performed similarly, with germination values ranging from 14.00 to 17.76. It was concluded that there were no significant differences between the petunia plants in three composts used in this trial.     

Performance of stochastic approaches for forecasting river water quality

This study analysed water quality data collected from the river Ganges in India from 1981 to 1990 for forecasting using stochastic models. Initially the box and whisker plots and Kendall's tau test were used to identify the trends during the study period. For detecting the possible intervention in the data the time series plots and cusum charts were used. The three approaches of stochastic modelling which account for the effect of seasonality in different ways, i.e. multiplicative autoregressive integrated moving average (ARIMA) model, deseasonalised model and Thomas–Fiering model were used to model the observed pattern in water quality. The multiplicative ARIMA model having both nonseasonal and seasonal components were, in general, identified as appropriate models. In the deseasonalised modelling approach, the lower order ARIMA models were found appropriate for the stochastic component. The set of Thomas–Fiering models were formed for each month for all water quality parameters. These models were then used to forecast the future values. The error estimates of forecasts from the three approaches were compared to identify the most suitable approach for the reliable forecast. The deseasonalised modelling approach was recommended for forecasting of water quality parameters of a river.     

济南市供水消毒副产物的变化研究

选取济南市主要的三个地表水厂为研究对象,分析了消毒副产物在管网中的变化规律,并提出了控制饮用水中消毒副产物的对策。研究结果表明,济南市饮用水中的消毒副产物主要是三卤甲烷,温度和余氯是管网中控制消毒副产物和TOC浓度的重要因素。     

A Pilot Study to Measure Indoor Concentrations and Emission Rates of Polycyclic Aromatic Hydrocarbons

Sampling and analytical methods for gas- and particulate-phase polycylic aromatic hydrocarbons (PAH) in indoor air were evaluated in a controlled field study. Using 12-h, 25-m³ samples, gas-phase PAH were collected on XAD-4 resin and analyzed by GC-MS, and particulate-phase PAH were collected in filters and analyzed for by HPLC with fluorescence detection. Tests were conducted in homes and office buildings without active combustion sources and with gas stoves, wood stoves and cigarette smoking as controlled sources. Indoor concentrations, outdoor concentrations and air-exchange rates were simultaneously measured. The precisions of the concentrations were evaluated using collocated sample pairs collected indoors and outdoors. Net emission rates were calculated for the gas-phase PAH. Net emissions of these compounds were measured in buildings without active combustion sources. Environmental tobacco smoke was identified as a significant source of both gas- and particulate-phase PAH.     

南海饮用水水源突发性污染应急处理系统的研发和建立

针对水源突发性污染频发的现状,开发和建立了南海饮用水水源突发性污染应急处理系统。在对北江水源地存在的污染物进行调查分析并确定目标污染物的基础上,研究了目标污染物的应急去除技术,建立水源水质预警系统和水厂应急强化处理系统。介绍了项目实施的技术思路以及取得的主要技术成果,可为同行业其他企业提供参考。     

江西省农村中医适宜技术推广应用的效果

目的分析江西省中医适宜技术推广应用的效果、满意度情况及影响因素。方法对江西省5个项目示范县实施3项中医技术推的广效果进行分层抽样调查。结果热敏灸治疗颈椎病、经皮穴位电刺激治疗瘀滞型肩周炎和隔物灸治疗寒湿凝滞型原发性痛经3项技术的有效率（含治愈）分别为80.6%、74.6%、71.8%;愿意推广技术的医生分别占91.4%、93.3%、89.7%,影响因素为安全性、对技术的掌握程度和所在单位是否有开展条件。患者对技术的综合满意率分别为97.0%、96.1%和88.7%,患者对技术的了解程度、医生使用的熟练程度、治疗结果、治疗时间是否充分、治疗时间是否节约5项是影响因素。结论江西省3项中医适宜技术的治疗效果及满意度都比较高。     

Ultimate strength of continuous composite box-girder bridges with precast decks

In order to apply precast decks to continuous composite bridges, several experiments and analytical studies were performed. From many previous studies, design criteria for crack controls in transverse joints of prefabricated slabs were confirmed. These considerations were needed for serviceability. The bridges which satisfy service limit states, also, should be evaluated for ultimate strengths to define limit states. In this paper, experimental and analytical studies of two-span continuous composite bridges with open box girder section were conducted. Cracking, yielding and ultimate loads were evaluated and compared with the test results for design of continuous composite bridges with precast decks. To evaluate yielding loads of continuous bridges, an uncracked section method considering moment redistribution which is defined in EUROCODE 4, was considered. In calculation of ultimate strengths, full or partial shear connection and sectional classes which were defined in EUROCODE or AASHTO LRFD specifications were considered. Also, through numerical analysis considering material nonlinearities, moment-curvature relationship and moment redistributions were estimated.     

波浪腹板钢结构设计理论研究及应用现状

为配合CECS 290∶2011《波浪腹板钢结构应用技术规程》的颁布施行,结合波浪腹板钢结构的最新研究进展,介绍规程的主要设计条文及其产生背景。鉴于波浪腹板构件具有较为独特的受力机理,对其设计计算的相关条款进行阐释,主要涉及其强度、刚度、稳定性及连接节点等方面的设计计算理论,具体包括构件的强度计算、局部承压验算、支承加劲肋验算、腹板抗剪稳定性验算、构件的整体稳定性验算、变形计算简化模型、构件与结构变形计算简化方法、端板式节点中螺栓内力与端板厚度计算模型等,以及CECS 290∶2011中给出的适用于波浪腹板门式刚架的多种节点构造形式。另外,讨论波浪腹板钢结构在制作与安装中的关键技术问题,包括波浪腹板钢构件的轧制和焊接要求、制作和安装误差控制以及除锈与涂装防腐的相关标准等,并对波浪腹板钢构件自动化生产线及波浪钢板剪力墙的一些最新研究进展进行介绍。