Takao lida

Development and verification of long-range atmospheric transport model of radon-222 and lead-210 including scavenging process (2008)

Hirao, Shigekazu, Nono, Yuki, Yamazawa, Hiromi, Moriizumi, Jun, Lida, Takao, Yoshioka, Katsuhiro

A three-dimensional Eulerian atmospheric long-range transport model of radon-222 (^222Rn) and lead-210 (^210Pb) coupled with meteorological model MM5 was developed. The model calculates advection,...

Estimation of global radon exhalation rate distribution (2008)

Goto, Masayoshi, Moriizumi, Jun, Yamazawa, Hiromi, Lida, Takao, Zhuo, Weihai

A radon exhalation rate distribution model was developed, which considers dependency on soil water saturation, soil temperature and soil texture. The global averages of the radon exhalation rates...

The Measurement of Size Distribution of Indoor Natural Radioactive Aerosols by Imaging Plate Technique (2008)

Lida, Takao, Rahman, Naureen Mahbub, Matsui, Akihiro, Yamazawa, Hiromi, Moriizumi, Jun

The indoor radioactive aerosols of radon decay products are considered as a main radioactive contaminant in human environment. In this study, the particle size distribution was measured with low...