Results 31 to 40 of about 17,795 (163)

Correction of the radon exhalation rate using the Kalman filtering to reduce measurement errors

Nuclear Engineering and Technology
The RAD7 detector is widely used for measuring the radon exhalation rate from the surfaces of media such as soil, rocks, and building materials. However, during the measurement process, the accuracy of the results is prone to interference due to the ...
Haoyu You, Jianfeng Tang, Zhongkai Fan, Ruomei Xie, Hongzhi Yuan, Yanliang Tan   +5 more
doaj   +1 more source

Comparison of measured exhaled nitric oxide at varying flow rates [PDF]

Thorax, 2005
Altered levels of exhaled nitric oxide (FeNO) have been well documented in a number of conditions, although it is in asthma that this phenomenon has been most extensively investigated.1 Raised FeNO levels in patients with asthma have been correlated not only with other markers of airway inflammation (including induced sputum eosinophil count), but also
D, Menzies, T, Fardon, P, Burns, B J, Lipworth   +3 more
openaire   +2 more sources

Multiple point rapid measurement method for radon exhalation rate in uranium tailings reservoir and its application

四川大学学报. 自然科学版, 2018
Based on the principle of that the equivalent decay constant of perforated accumulation chamber, we propose a new method to rapidly measure the surface radon exhalation rate with multi-point detection technique.
LI Zhi-Qiang, XIAO De-Tao, ZHAO Gui-Zhi, CHEN Ji-You, ZHOU Yi   +4 more
doaj  

Study on influence of soil and atmospheric parameters on radon/thoron exhalation rate in the Bangalore University campus, Bengaluru

Radiation Protection and Environment, 2018
In the present study, Radon (222Rn) and Thoron (220Rn) concentration have been measured in the Bangalore University Campus using RAD7 during the postmonsoon season. The results reveal that 222Rn concentration ranged from 360 ± 146 to 643 ± 196 Bq/m3 with
M B Karthik Kumar, N Nagaiah, Gladys Mathews, M R Ambika   +3 more
doaj   +1 more source

Statistical Characterization of Damage of Different Surface P-Wave Velocity Sets under Dynamic Load and Study on Overall Radon Detection Consistency

Lithosphere, 2021
On the basis of reviewing the existing research status of cumulative damage of the rock mass and summarizing the existing engineering application fields of radon, this paper attempts to apply radon detection technology to the research field of rock ...
Shuai Zhang, Jiantao Cao, Yong Liu, Jun Liu, Changshou Hong, Bo Lei   +5 more
doaj   +1 more source

Fuzzy optimization of radon reduction by ventilation system in uranium mine

Nuclear Engineering and Technology, 2023
Radon and radon progeny being natural radioactive pollutants, seriously affect the health of uranium miners. Radon reduction by ventilation is an essential means to improve the working environment. Firstly, the relational model is built between the radon
Meirong Zhang, Jianyong Dai
doaj   +1 more source

Natural radionuclide distribution and radon exhalation rate from the soil in Vilnius city

Journal of Environmental Engineering and Landscape Management, 2007
In the territory of Vilnius city radioisotopic composition of different soils was experimentally determined and radon exhalation rate from the soil was evaluated using these data.
Dainius Jasaitis, Aloyzas Girgždys
doaj   +1 more source

Validation of a novel respiratory rate monitor based on exhaled humidity [PDF]

British Journal of Anaesthesia, 2012
Postoperative monitoring of ventilation is largely restricted to the measurement of haemoglobin-oxygen saturation and respiratory rate (RR) derived from the ECG. measurement is inadequate when used with supplemental oxygen and ECG-derived RR is subject to artifacts.
Niesters, M., Mahajan, R., Olofsen, E., Boom, M., Valle, S.G. del, Aarts, L., Dahan, A.   +6 more
openaire   +3 more sources

The Radon Exhalation Rate and Dose Assessment of Granite Used as a Building Material in Serbia

Atmosphere
The application of energy-saving policies in buildings could lead to a decrease in the air exchange rate in dwellings, which could consequently lead to an increase in indoor radon concentration and, therefore, to an increase in resident exposure to ...
Fathya Shabek, Božidar Obradović, Igor Čeliković, Mirjana Đurašević, Aleksandra Samolov, Predrag Kolarž, Aco Janićijević   +6 more
doaj   +1 more source

RADON EXHALATION RATE OF SOME BUILDING MATERIALS COMMON IN SERBIA [PDF]

RAD Conference Proceedings, 2019
Conference of 6th International Conference on Radiation and Applications in Various Fields of Research, RAD 2018 ; Conference Date: 18 June 2018 Through 22 June 2018; Conference Code ...
Avramović, Dragan, Čeliković, Igor T., Ujić, Predrag, Vukanac, Ivana, Kandić, Aleksandar, Jevremović, Aleksandar M., Antonijević, Dunja, Lončar, Boris B.   +7 more
openaire   +3 more sources