Pore connectivity influences mass transport in natural rocks; Pore structure, gas diffusion and batch sorption studies

Yuan, X.*; Hu, Q.*; Lin, X.*; Zhao, C.*; Wang, Q.*; Tachi, Yukio; Fukatsu, Yuta; Hamamoto, Shoichiro*; Siitari-Kauppi, M.*; Li, X.*

Journal of Hydrology, 618, p.129172_1 - 129172_15, 2023/03

https://doi.org/10.1016/j.jhydrol.2023.129172

Development of a plutonium air monitor for emergency environmental monitoring

Kinouchi, Nobuyuki; Oishi, Tetsuya; Noguchi, Hiroshi; Yoshida, Makoto; Kato, Shohei; Ito, Katsuhito*

Radioisotopes, 51(2), p.71 - 77, 2002/02

https://doi.org/10.3769/radioisotopes.51.71

We have developed an air monitor which is possible to measure rapidly and sensitively the concentration of plutonium for the environmental monitoring at an accident of a nuclear reprocessing plant. The monitor is designed to collect airborne plutonium by drawing the ambient air through a filter and to detect the activity by alpha spectroscopy. The following two methods are equipped with the monitor: continuous measurement at atomospheric pressure and batch measurement at vacuum. The description of the air monitor and the results of performance test are reported.

Intercomparison on measurement of distribution coefficient; Investigation on differences of measured values between individuals

Takahashi, Tomoyuki; Takebe, Shinichi; Kimura, Hideo; Matsuzuru, Hideo; Yasuda, Hiroshi*; Uchida, Shigeo*; Saeki, Akiyoshi*; Mahara, Yasunori*; Sasaki, Noriyuki*; *; et al.

JAERI-Research 97-089, 25 Pages, 1997/12

JAERI-Research-97-089.pdf:1.11MB

no abstracts in English

High Accuracy Measurements of Bulk Densities of ThO and (Th、U)O Microspheres by Mercury Pycnometry

; ; Shiba, Koreyuki

JAERI-M 83-168, 20 Pages, 1983/11

JAERI-M-83-168.pdf:0.8MB

no abstracts in English

Remote Batch Station for Paper Tape Input

JAERI-M 5739, 26 Pages, 1974/06

JAERI-M-5739.pdf:0.89MB

no abstracts in English