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- In this study,indoor radon consistence in some buildings in Beijing was measured with activated carbon box method. 采用活性炭盒法测定北京地区部分居民住宅内的氡浓度。
- indoor radon consistency 居室氡浓度
- Where does the indoor radon come from? 室内氡气是从哪里而来?
- Indoor radon distribution in Switzerland: lognormality and Extreme Value Theory. 瑞士室内氡气分布：对数常态及极端值理论。
- In this paper, global and local indoor radon distributions are modeled using Extreme Value Theory (EVT). 本文中全球及地区室内氡气浓度分布使用极端值理论。
- To the source to the indoor radon,have put forward and reduced the density measure of indoor radon effectively. 针对于室内氡的来源,提出了有效降低室内氡的措施。
- The measurement results of indoor radon in the populous place of Chengdu were analysed. 分析了成都市某人口密集区室内氡水平的调查结果及其影响因素。
- Seminar on the harm, prevention and treatment of indoor radon sponsored by Nanhua University is held in the People's Great Hall, Beijing. 学校举办的室内氡气的危害与防治研讨会在北京人民大会堂举行。
- The results show that EVT performs better than lognormal pdf for real data sets characterized by high indoor radon concentrations. 结果显示极端值理论对高氡气浓度分布区域之预测佳于一般对数常态分布模式。。
- The usual way to model indoor radon concentrations is to assume lognormal distributions of concentrations on a given territory. 模式化室内氡气浓度时常假设，其于一定范围内为对数常态分布。
- If indoor radon concentrations in the control standard within the medical significance to human health will not bring the injury. 如果室内氡浓度被控制在标准范围内，则对人体健康不会带来医学意义上的损伤。
- Investigations were made of indoor radon concentrations for decorated dwellings using solid state nuclear track detectors(SSNTD). 采用固体核径迹探测器(SSNTD),对装修后的房屋进行室内氡浓度调查。
- Of all the 28 dwellings surveyed, 6 dwellings (21%) have indoor radon levels above 200 Bq/m~3, a limit value of indoor radon laid down by China Environmental Protection Agency. 在进行调查的28个居室中,有6个(占21%25)居室内氡浓度超过我国住房内氡浓度控制标准GB/T16146-1995中已建住房的室内氡浓度上限值(200Bq/m3)和国际辐射防护委员会制定的200Bq/m3的上限值。
- Experts noted that the current urban living environment is the main source of radioactive hazards of indoor radon and radioelement content standard building materials. 专家指出，目前城市生活环境中主要放射性危害的来源有室内氡气及放射性元素含量超标的建筑材料等。
- measures of declining radon consistency 防氡措施
- The transferring law of indoor Radon and its daughters is accounted. A numerical simulation example and some nadiation protective measures are also given. 讨论了室内氡的迁移转化规律并用数值模拟对实例进行计算;还讨论了室内氡的防护措施.
- It must be taken into consider seriously enough that the application of subway air results in the multiplication of indoor Radon and its filial generation concentration. 通过对地道风中氡及子体来源的分析，及给人体键康造成的危害，提出如何采取技术措施降低地道风中氡及其子体的浓度。
- Generally, indoor radon is the main source of construction materials, such as granite, tile and plaster, particularly the stones containing radioelement Yi release radon. 一般说来，建筑材料是室内氡最主要的来源，如花岗岩、瓷砖及石膏等，特别是含有放射性元素的石材易释放出氡。
- Analysis and modeling of statistical distributions of indoor radon concentration from data valorization to mapping and simulations are critical issues for real decision-making processes. 本研究经由统计分析及模式化室内氡气浓度，使资料绘图及模拟作为真正决策时之依据。
- In all the 290 research dwellings, 45 (23%) have indoor radon level above 150 Bq/m 3, a limit value of indoor radon concentration suggested by U.S. Environmental Protection Agency. 在进行调查的 1 90个居室中 ,有 4 5个 ( 2 3%25 )居室室内氡浓度超过美国环境保护局制定的 1 4 8Bq/m3室内氡浓度的上限值。
