to investigate a relationship between geology and radon. ... The indoor radon concentrations in subway stations were lognormally distributed. ... The objective of this study was to identify the primary source of radon in Seoul subway stations, and
This study investigated the indoor radon concentration of 44 elementary schools in Gyeongsang-do from ... As for distribution of concentration based on seasons, the radon concentration was 77.4Bq/m<sup> ... Indoor radon concentration according to the constructing year was 64.5Bq/m<sup>3</sup> in
여기서 N0는 함속으로 처음에 가져왔을 때의 핵의 수가 되며 N(t)는 t시간후에 남아 있는 radon 핵의 수가 된다. ... Radon의 붕괴는 5분 동안 관찰이 되어야 하며 { N(t) = N_0 e^- t 관계식에 따르는 현상을 보여줄 것이다. ... Half-life of radon 목적 - 이온화함을 사용하여 방사선 동위원소 Rn 220d의 반감기를 측정한다 원리 - 시간t에서 N개의 핵들이 붕괴되지 않은 상태에 있고 시간 t에서
Radon barrier paint and radon shield membrane developed to reduce the concentration of radon in soil ... rate of radon in order to manage radon by source. ... to reduce the source of radon.
Group 1 carcinogen, it is essential for the public to be aware of what radon is, and how to manage radon ... As radon is a naturally occurring radioactive gas that can cause lung cancer and is classified as a ... Therefore, general information on radon, as well as its health risks, measurement methods, mitigation
Despite increasing public concern following mass media coverage regarding the risk of radon to human ... , ease fears regarding the associated risks, and provide radon-specific quality services. ... health and the need to control it, there remains a lack of infrastructure for measuring and mitigating radon
a lack of sufficient data for radon management purposes. ... Indoor radon was measured in 48 households in four regions (Gyeonggi-do and Gangwon-do). ... The levels of Indoor radon can increase in newly built apartments that mainly use construction materials
more accurate information about radon to the public. ... of radon among the building materials available on the market. ... With increasing public awareness regarding radon, this study has been conducted with the aim of providing
grasp the radon reduction rate of activated carbon filter. ... This study was carried out considering that activated carbon physically adsorbs radon. ... cleaners equipped with activated carbon filter, eight air cleaners sold in Korea were selected and the radon
radon concentration. ... In this study, a system was developed that can evaluate the radon gas removal efficiency of air cleaner ... HEPA filter showed a significantly lower capacity for radon removal than the GAC filters.
to be somewhat more vulnerable to radon exposure. ... Although monitoring of radon has been extensively implemented throughout South Korea, the risk assessment ... In this study, the differences in radon exposure according to two groups (< 1 and 1-6 years old) were
the physical properties and hazards of radon. ... than roughly 85% of the respondents saying that they did not know what radon was. ... was conducted to investigate the public awareness level of the Korean population on the hazards of radon
With the above scope, ACF880 also achieved the highest radon absorption rate and speed in comparison ... suggest that the optimum activation temperature for PFO containing ACFs is 880℃ for effective indoor radon ... scanning electron microscope (SEM) and a BET surface area apparatus were employed to evaluate the indoor radon
Before choosing a house, it is helpful to buy a radon tester to check for radon gas emissions. ... For example, cement, a regular building material, contains radon gas, which is known to cause cancer.