Zobrazeno 1 - 10
of 334
pro vyhledávání: '"Kenji OKAJIMA"'
Autor:
Nozomu Urahata, Kenji Okajima
Publikováno v:
International Journal of GEOMATE; Jun2024, Vol. 26 Issue 118, p1-8, 8p
Publikováno v:
Paddy and Water Environment. 18:345-353
Repairs of concrete irrigation channels in Japan are guided to a large extent by the degree to which their walls have degraded over decades of use. Current methods of estimating Manning roughness coefficients from the roughness of the channel wall ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bcef6f83a313c5c8e0cc0e578b0d523
https://doi.org/10.1007/s10333-019-00786-3
https://doi.org/10.1007/s10333-019-00786-3
Autor:
Kenji Okajima, Shoko Nishiwaki
Publikováno v:
Paddy and Water Environment. 17:231-236
The topographical features of farmland stone walls that were damaged by two heavy rains and the 2016 Kumamoto Earthquake were studied. Topographical analyses were performed on data for sites of the damaged farmland stone walls by QGIS. The topographi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8c42448a147b7e40342b2132c0e5766
https://doi.org/10.1007/s10333-019-00715-4
https://doi.org/10.1007/s10333-019-00715-4
Development of a measurement method for abrasion irrigation channel using underwater ultrasonic wave
Publikováno v:
Paddy and Water Environment. 17:549-554
Japan has many concrete irrigation channels with total length of about 400,000 km. Most of these channels are now too old for continued use. It would be too costly to reconstruct these channels. The concrete surfaces of the channels have been abraded
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec4a1d0d39f0393177855405a27fb7e8
https://doi.org/10.1007/s10333-019-00751-0
https://doi.org/10.1007/s10333-019-00751-0
Publikováno v:
JOURNAL OF RURAL PLANNING ASSOCIATION. 40:166-167
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa58fcb7e7d193e701d714424841b0d7
https://doi.org/10.2750/arp.40.166
https://doi.org/10.2750/arp.40.166
Publikováno v:
Neuropharmacology. 202:108882
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb50e10c2eaec1a52977eec52091d832
https://doi.org/10.1016/j.neuropharm.2021.108882
https://doi.org/10.1016/j.neuropharm.2021.108882
SEEPAGE FAILURE IN FOUNDATION OF WEIR WITH CUT-OFF WALLS BY MODEL EXPERIMENTS AND ELASTO-PLASTIC FEM
Autor:
Kenji Okajima
Publikováno v:
International Journal of GEOMATE. 17
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a120a9be19432337c2b8a98b0f677d3
https://doi.org/10.21660/2019.63.71127
https://doi.org/10.21660/2019.63.71127
Publikováno v:
International Journal of GEOMATE. 14
In Japan, the total length of the main concrete agriculture irrigation canals is estimated to beabout 50,000 km. These canals deteriorate over time and most of the canal surface has become rough. Onemethod of measurement of the roughness of the concr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e25abae7ffe8bf34e1e59fc754949fd
https://doi.org/10.21660/2018.42.7242
https://doi.org/10.21660/2018.42.7242
Publikováno v:
International Journal of Environmental & Rural Development; Dec2018, Vol. 9 Issue 2, p70-75, 6p
Autor:
Masaki ISHIKAWA, Toshinori SAKAI, Kenji OKAJIMA, Tatsuo KONEGAWA, Yasushi KATAOKA, Kazuyuki SAKAGUCHI, Masashi NAKATANI, Kenji HASEGAWA, Kenji HAYASHI, Tsunehiko YOSHII
Publikováno v:
Journal of the Japan Society of Engineering Geology. 55:317-324
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5c12ec290b66eaa9fd5ce1c916b0fd9
https://doi.org/10.5110/jjseg.55.317
https://doi.org/10.5110/jjseg.55.317