Installation of the water environment irradiation facility for the IASCC research under the BWR/PWR irradiation environment, 2

Magome, Hirokatsu; Okada, Yuji; Hanawa, Hiroshi; Sakuta, Yoshiyuki; Kanno, Masaru; Iida, Kazuhiro; Ando, Hitoshi; Yonekawa, Akihisa; Ueda, Haruyasu; Shibata, Mitsunobu

JAEA-Technology 2014-023, 267 Pages, 2014/07

JAEA-Technology-2014-023-01.pdf:103.68MB
JAEA-Technology-2014-023-02.pdf:71.92MB

In Japan Atomic Energy Agency, in order to solve the problem in the long-term operation of a light water reactor, preparation which does the irradiation experiment of light-water reactor fuel and material was advanced. JMTR stopped after the 165th operation cycle in August 2006, and is advancing renewal of the irradiation facility towards re-operation. The material irradiation test facility was installed from 2008 fiscal year to 2012 fiscal year in JMTR. This report summarizes manufacture and installation of the material irradiation test facility for IASCC research carried out from 2012 to 2014 in the follow-up report reported before (JAEA-Technology 2013-019).

Numerical study of fog deposition on vegetation for atmosphere-land interactions in semi-arid and arid regions

Katata, Genki; Nagai, Haruyasu; Kajino, Mizuo*; Ueda, Hiromasa*; Hozumi, Yu*

Agricultural and Forest Meteorology, 150(3), p.340 - 353, 2010/03

https://doi.org/10.1016/j.agrformet.2009.11.016

The aim of the present study is to evaluate fog deposition on vegetation and its contribution to water and energy balance in arid regions using a detailed land surface model including fog deposition on vegetation under meteorological conditions simulated by a meteorological model. The results of estimated fog deposition indicated that fog deposition provided a more effective water source for plant growth as compared to heavy rainfall in arid areas. Evaporation from leaf surface water eases the plant's water stress via reducing transpiration. Latent heat of evaporation from the leaf surface water and soil causes temperature reduction of soil and leaves during the daytime. Moreover, decreased transpiration rates as a result of increased evaporation from the leaf surface water due to fog deposition, yields an effective water source to be used for photosynthesis for those plants suffering from severe water stress in arid environments.

Numerical study of fog occurrence and fog water deposition on the vegetation at a semi-arid coastal area in Saudi Arabia

Katata, Genki; Nagai, Haruyasu; Ueda, Hiromasa*

Proceedings of 4th International Conference on Fog, Fog Collection and Dew, p.33 - 36, 2007/07

Generation of fog along the coastal mountain range in a semi-arid environment is investigated using three-dimensional Mesoscale Model (MM5) simulations. The study focuses on dense fog formed along a west side of the Asir mountains in Saudi Arabia during January 2002. MM5 reproduced tower measurements of cloud water content, wind speed and direction, air temperature, humidity, and solar radiation. Computed profiles of wind speed and direction, air temperature, and humidity also agreed with rawinsonde measurements. Numerical experiments using a one-dimensional model for atmosphere-soil-vegetation interaction (SOLVEG) with fog water deposition process have been performed to evaluate the contribution of fog water deposition to water resource at the area. Meteorological and cloud water at the lowest atmospheric layer from MM5 simulation results were used in the experiments. Fog along the coastal mountain range may be an important water resource for vegetation surviving in the area.

Numerical study on fog deposition to vegetation at arid and semiarid areas, 1; Quantitative evaluation of fog deposition

Katata, Genki; Nagai, Haruyasu; Kajino, Mizuo*; Ueda, Hiromasa*

no journal, , 

no abstracts in English