Hisashi Yoshikoshi
Kyushu University
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Featured researches published by Hisashi Yoshikoshi.
Atmospheric Research | 2000
Norihiko Fukuta; Kenji Wakimizu; Koji Nishiyama; Yoshinori Suzuki; Hisashi Yoshikoshi
1999 . The total number of ice crystals with the nucleant remains essentially constant after the moment of the nucleation. The horizontally laid ice crystal thermal in the cloud, like cumulus convection, rolls up in the form of twin cylinders and turbulently spreads with the help of the buoyant motion caused by the heat of ice crystal growth or phase . change Fukuta, 1973 . The supercooled cloud volume, slowly and continually taken into the ice thermal during the ascent, sustains the condition and time for crystal growth, the heat generation, and the buoyancy to a maximum extent in feedback. When the enlarging thermal reaches the temperature inversion, which often exists at the cloud top, the thermal spreads horizontally in an anvil shape, but the crystals there have already acquired sufficient size to fall through the supercooled cloud volume below, grow, and generate heat. The heating induces lifting of the underlying cloudy, as well as moist air,
Biologia | 2009
Masaharu Kitano; Kazuki Urayama; Yoshinobu Sakata; Yasutaka Sonoda; Kenji Ebihara; Yuki Sago; Hisashi Yoshikoshi; Takuya Araki; Daisuke Yasutake; Hiroyuki Cho; Tetsuo Kobayashi
Water deficit and salt accumulation in soil presents serious problems to crop production in semi-arid regions. These problems depend on the active transpiration stream and the selective absorption of ions by crop roots. In this study, a large sized soil column system was used to examine the dynamics of water and ion transport and salt accumulation in soil layers. Special reference was placed on the effects of the active and selective absorption by roots of different crops (i.e., corn plants, sunflower plants and no plants). The column system was equipped with on-line systems for the control of groundwater level. Soil water content sensors enabled time-course evaluations of the volumetric water content and hence upward flux of the groundwater in the soils at different depths. Furthermore, the distribution and accumulation of ions in soil layers, plant organs and xylem sap were analyzed using ion chromatography. In this column experiment, diurnal and longer term changes in water movement and ion accumulation in soil, affected by root absorption characteristics of plants, were evaluated quantitatively. The results demonstrated that the column system was applicable for the quantitative analysis of the effects of root absorption by different crops on water deficit and salinization in soils.
Journal of The Faculty of Agriculture Kyushu University | 2008
Weizhen Wang; Tetsuo Kobayashi; Daisuke Yasutake; Masaharu Kitano; Hiroyuki Cho; Takuya Araki; Hisashi Yoshikoshi
Journal of The Faculty of Agriculture Kyushu University | 2008
Hisashi Yoshikoshi; Tetsuo Kobayashi; Masaharu Kitano; Weizhen Wang; Jian Zhou; Yueru Wu; Hiroyuki Cho; Takuya Araki; Daisuke Yasutake; Kazuki Urayama
Doboku Gakkai Ronbunshuu B | 1998
Tetsuji Ozaki; Yoshinori Suzuki; Kesayoshi Hadano; Hisashi Yoshikoshi; Takanobu Yoshimura; Terumi Sakoguchi; Takashi Noguchi; Minoru Tanaka
International Workshop on Greenhouse Environmental Control and Crop Production in Semi-Arid Regions | 2008
Masao Hirai; Hisashi Yoshikoshi; Masaharu Kitano; Kenji Wakimizu; Teruki Sakaida; Tetsuya Yoshioka; Juichi Nitabaru; Kentaro Nakazono; M. Hayashi; T. Maki
Journal of Environmental Engineering (transactions of Aij) | 2011
Naru Takayama; Hisashi Yoshikoshi; Haruhiko Yamamoto; Kiyoshi Iwaya; Yoko Harada; Toshiaki Yamasaki; Yoshinari Tateishi
Journal of Agricultural Meteorology | 2009
Hisashi Yoshikoshi; Tetsuo Kobayashi; Weizhen Wang; Daisuke Yasutake
Archive | 2002
Keiko Nishiyama; Kenji Wakimizu; Yoshimi Suzuki; Hisashi Yoshikoshi; Norihiko Fukuta
Journal of The Illuminating Engineering Institute of Japan | 2014
Haruhiko Yamamoto; Hisashi Yoshikoshi; Kiyoshi Iwaya; Yoshimitsu Sonoyama