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- Keywords Radium content;Moisture saturation;Porosity;Grain size;Soil radon concentration;Radon exhalation rate from soil; 镭含量;含水饱和度;孔隙度;粒径;土壤氡浓度;地表氡析出率;
- Soil Radon Concentration 土壤氡浓度
- Scintillation flask method for measuring radon concentration in the air. 空气中氡浓度的闪烁瓶测量方法.
- Radon concentration in groundwater was measured at 18 points including two continuous recording stations. 测量了包括两个连续记录台站在内共18个点的地下水的氡浓度。
- Radon concentration in ground water was measured at 18 points including two continuous recording stations. 测量了包括两个连续记录台站在内共18个点的地下水的氡浓度。
- The average radon concentration inside the emporium was 34.10+9.42 Bq/m~3 with the total effective dose per year of 1.0709 mSv. 商场平均氡浓度结果分别为34.;10±9
- According to the legal metrological units, the Becquerel (Bq) and Becquerel/Litre (Bq/L) were taken as activity units and radon concentration units in various radon measurements. 根据法定计量单位选用了贝克(Bq)和贝克/升(Bq/L)。 相应作为各种氡测量的[放射性]活度单位和氡浓度单位。
- Methods Long term and continuous measurement has been carried out by using ERMB1(ERM: Electrostatic Radon Monitors ), which can supply hourly radon concentration. 方法 采用静电氡监测仪 (ERMB1)对室外氡浓度进行长期连续测量 ,给出每小时的氡浓度。
- 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。
- The three factors must be taken into consideration to reduce radon concentration to a reasonably acceptable level so that the uranium well can be kept in its best working condition with minimum radiation. 为了把铀矿井平均氡浓度降到一个合理的可接受水平,必须对这三个因素综合考虑,使铀矿井处于最佳工作状态和最优的辐射水平。
- 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。
- The technical rationality of adopting plenum ventilation in uranium mines,and the effect of the plenum ventilation on controlling radon emination and attenuating radon concentration are discussed. 论述了铀矿井采用压入式通风方式的技术合理性,以及压入式通风方式对抑制氡析出和排氡降氡的有效作用。
- 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。
- Some plants push their roots deep into the soil. 一些植物的根深深长入土中。
- The results indicate that the measured radon concentrations indoors in this way is as high as two times those measured by instantaneous method in undecorated houses. 结果表明,用SSNTD测得的装修后居室内的氡浓度比以往用瞬时法测得的、未经装修的增加一倍。
- No matter the single-seasonal values or annual averages, the radon concentrations in tunnels are quite higher than that in basements of buildings and underground shopping centers. 不管是单季还是年平均值,各城市三类工程的氡浓度都遵循隧道类工程远大于结建式硐室工程和单建式硐室工程的规律。
- Such crops won't grow in limy soil. 这类作物不能在石灰质的土壤中生长。
