共查询到20条相似文献，搜索用时 31 毫秒
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《校园英语(教研版)》2015,(32)
In order to reduce indoor smoke concentration and improve indoor air quality,we put forward the intelligent indoor smoke warning and air purification device. This device can quickly reduce the concentration of indoor smoke by the air purification and fire alarm function. It provides a suitable living environment for people. 相似文献
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邓洪波 《南京晓庄学院学报》2005,21(4):109-115
中国书院在一千余年的发展中,在教育对象、教学内容、教学程度三个方面具有着丰富的层次性,能够满足不同时期、不同地区、不同人群的不同的文化教育需要自成一体,成长为一个涉及不同的教育领域、不同教育层次的可以独立运作的教育体系。 相似文献
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从空气品质的定义、通风与室内空气品质的关系、提高空气品质的手段、湛江某商场空气品质的客观和主观调查等对大型公用场所室内空气品质进行了分析和研究。 相似文献
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室内绿化探索 总被引：1，自引：0，他引：1
严正 《洛阳工业高等专科学校学报》2005,15(4):32-33
随着居住环境空气污染的日益加剧，人均绿化面积的不断缩小，人们渴望绿色的居住空间，清新健康的空气．介绍室内绿化的优点，室内植物的种类、选择及室内的绿化布局方式。 相似文献
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丽水创建森林城市的必要性及实施策略 总被引：1，自引：0，他引：1
丽水是浙江省最大的林区市、全国南方重点林区市之一,森林覆盖率80．8％。从丽水创建森林城市是生态文明建设、城市科学发展、人民生活水平提高、增加城市综合竞争力的需要出发,提出了丽水创建森林城市的基本理念、基本要求和要处理的基本关系。 相似文献
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通过对南京地区某双层玻璃幕墙建筑在夏季白天不同运行模式下的表皮各层和室内温度分布对比实测,分析该建筑的热特性.结果表明:在9.5 h内,房间B在外层通风口打开、内层表皮紧闭、中间遮阳完全启用的情形下,空调系统能耗比房间A在内外层表皮均完全紧闭、无遮阳设施情形下减少21.0%.玻璃幕墙各层表皮和室内各状态点的温度沿水平和垂直方向的分布规律均受到遮阳状态的显著影响.中间遮阳设施的启用有助于强化热通道的烟囱效应.相较于房间A,房间B的温度分布更加均匀.但在所有的测试工况下,双层玻璃幕墙热通道的过热问题始终存在. 相似文献
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夏热冬冷地区夏季闷热,冬季阴冷,居民冬夏两季对室内的通风换气均有较高的需求.以夏热冬冷地区采暖居住建筑为研究对象,针对室内不同功能空间的自然通风方式进行了优化设计,做到保证夏季良好通风效果的前提下,同时协调冬季室内空气品质与采暖能耗的矛盾,提出了兼顾该地区冬夏两季室内风环境需求的自然通风设计策略. 相似文献
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检测发现,在装修后的室内空气中,以苯类和甲醛为主的有害气体含量有几百种之多;根据办公室和住宅装修后苯污染实测数据和苯的毒性分析,对比国家标准提出防控途径和治理措施,旨在提高人们对室内苯系物污染的认识并有效地进行防控。 相似文献
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室内环境污染的危害与防治 总被引：1，自引：0，他引：1
本文通过对民用建筑室内环境污染物甲醛、苯、氡、TVOC的危害与防治的分析,阐述了提高全民室内环保意识的必要性和加强室内空气污染防治的重要性,并提出了几种防治有害污染物的措施和方法。 相似文献
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The paper presents a simple model for outdoor air contaminant transmission into occupied rooms. In the model, several factors such as filtration, ventilation, deposition, re-emission, outdoor concentration and indoor sources are included. The model results show that the air exchange rate plays an important role in the transmission of outdoor contaminants into the indoor environment. The model shows that increasing the value of the filtration efficiency decreases the mass concentration of indoor particles. In addition, if outdoor aerosol particles have a periodic behaviour, indoor aerosol particles also behave periodically but smoother. Indoor sources are found to be able to increase indoor concentrations greatly and continuously. 相似文献
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Indoor environment separated with down.feed air curtain was numerically simulated and experimentally researched.Indoor airflow and temperature fields separated with air curtain were numerically simulated.Resuits show that both polluted airflow and thermal air current can be separated with a down.feed air curtain to prevent contaminants from spreading in the room space.In a test chamber.the smoke of burning Tibetan incense served as the source of contaminants.and the probe test shows that 1.0 pm is the prevailing diameter of the smoke particles.During the release of the smoke.the particle concentration of the indoor air was tested with a laser particle counter at the points of three different heights from the floor when the air curtain was running or not.Experimental results show that the higher the test point is located,the lower the particle concentration is,implying that the separating or isolating eflfect decreases as the air velocity of the curtain reduces along with the height descends.According to both simulation and experimental results.down.feed air curtain can separate indoor environment effectively when the supply air velocity of air curtain is not less than 3 m/s.In order to strengthen separation effect,it is suggested that the supply air velocity be speeded up to 5 m/s. 相似文献
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Globalization has changed the way people behave in different aspects of life. One of the significant differences is that people
are now competing with everyone around the world, not just people within or near their own regions. A good way of remaining
competitive is to provide quality education that can help students meet the needs of the competitive economy. However, not
all nations are responding in the same way. Using a quantitative approach, this explorative study seeks to discover if, and
how, cultural dimensions fit into the process of meeting the demands of the competitive economy by means of education across
regions. Forty-three regions with different ratings on the Power Distance Index (PDI), Individualism (IDV), Masculinity (MAS),
and the Uncertainty Avoidance Index (UAI) are included in this study. The results show that UAI, PDI and IDV are significant
factors relating to this issue. 相似文献
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目前我国少数民族地区总体教育水平相对落后，各类人才总量不多、水平不高。加入WTO对少数民族人才培养提出了更高的要求。少数民族地区人才培养的现念要更新，要进一步明确人才培养的层次与目标，建立多层次的人才培养网络，并加大中央财政对少数民族地区人才培育的投入。 相似文献
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Indoor air quality and thermal comfort are important features of indoor environment, In this paper, a numerical simulation based on the k-ε model of CFD is used to analyze factors such as loading, exterior-protected construction, blowing-in rate that play an important role in the temperature field and airflow field of the displacement ventilation system. Exterior-protected construction has little influence on indoor temperature distribution of displacement ventilation systems and the influence is limited only in a small area near the external wall when the indoor heat source is the main cooling load. The height of a room has little influence on indoor temperature field, and the temperature gradient of active region is basically unchanged. In the system combined with a displacement ventilation system and a cooling system, the height also has little influence. When the cooling load is high,the indoor heat source creates a strong convective plume, which will make the average indoor air age lower, the ventilation efficiency higher and the elimination of pollutant easier. Air supply rate plays an important role in displacement ventilation systems. The increase of air supply rate that can be realized by increasing the air supply velocity and enlarging the area of air inlet will increase the mass capability of the system and diminish the vertical temperature gradient. From the comparison between simulations and experiments, it is concluded that this simulation are creditable. 相似文献
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包容性增长在社会建设维度上要求用包容性统构社会排斥,重新调适公平和效率的关系:继续保持效率,更加注重公平;实现公平与效率共融,使效率中蕴含公平,公平中包含效率。包容性增长同时要求用包容性统构社会结构的非均衡性,促进城乡和区域"包容性"发展,优化社会结构。立足中国国情,推进权利配置无差异化、社会管理多样化、区域发展协调化是社会建设包容性增长的路径选择。 相似文献
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氡是自然界中广泛存在的一种天然放射性气体,是人居环境中最直接的污染物,其危害是看不见、摸不着的,氡及其子体是铀、钍等放射性元素产物,是引发肺癌的重要致病因子,氡对人体的辐射伤害占人体所受到的全部环境辐射的55%以上,长期受到氡辐射,会导致肺癌、白血病、皮肤癌及其它呼吸道病变的产生。因此国内外科技界也越来越关注氡的辐射问题,为提高空气品质,保护人体免受辐射危害,本文重点介绍了氡的物理化学性质、环境中氡的来源及浓度水平、各种建筑材料中放射性核素的含量,讨论了通风对室内氡水平的影响,认为依靠住宅建筑和装修完成后的补救措施来防治室内氡危害的效能是有限的,防治室内氡危害的关键措施是从源头上减少氡的来源。 相似文献