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DIFFUSE [CII] 158 MICRON LINE EMISSION FROM THE INTERSTELLAR MATTER AT HIGH GALACTIC LATITUDE
MATSUHARA H.,TANAKA M.,KAWADA M.,MAKIUTI S.,MATSUMOTO T.,NAKAGAWA T.,OKUDA H.,SHIBAI H.,HIROMOTO N.,OKUMURA K.,LANGE A. E.,BOCK J. J. The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1
We present the results of an rocket-borne observation of far-infrared [CII] line at 157.7 ${\mu}m$ from the diffuse inter-stellar medium in the Ursa Major. We also introduce a part of results on the [CII] emission recently obtained by the IRTS, a liquid-helium cooled 15cm telescope onboard the Space Flyer Unit. From the rocket-borne observation we obtained the cooling rate of the diffuse HI gas due to the [CII] line emission, which is $1.3{\pm}0.2 {\times} 10^{-26}$ $ergss^{-1} H^{-1}_{atom}$. We also observed appreciable [CII] emission from the molecular clouds, with average CII/CO intensity ratio of 420. The IRTS observation provided the [CII] line emission distribution over large area of the sky along great circles crossing the Galactic plane at I = $50^{\circ}$ and I = $230^{\circ}$. We found two components in their intensity distributions, one concentrates on the Galactic plane and the another extends over at least $20^{\circ}$ in Galactic latitude. We ascribe one component to the emission from the Galactic disk, and the another one to the emission from the local interstellar gas. The [CII] cooling rate of the latter component is $5.6 {\pm} 2.2 {\times}10$.
Tuning of magnetic and transport properties in Bi2Te3by divalent Fe doping
Jo, N. H.,Lee, K. J.,Kim, C. M.,Okamoto, K.,Kimura, A.,Miyamoto, K.,Okuda, T.,Kim, Y. K.,Lee, Z.,Onimaru, T.,Takabatake, T.,Jung, M. H. American Physical Society 2013 Physical review. B, Condensed matter and materials Vol.87 No.20
Groundwater supply under land subsidence constrains in the Nobi Plain
Adrian H. Gallardo,Atsunao Marui,Shinji Takeda,Fumio Okuda 한국지질과학협의회 2009 Geosciences Journal Vol.13 No.2
Groundwater overdraft resulted in land subsidence throughout the Nobi Plain, central Japan. To cope with the growing water demand in the region, a numerical model was used to determine the maximum withdrawal capacity of two confined aquifers without causing undesirable consequences. Results were validated against field data and by analytical solutions. The analysis focused in Aburashima, a site expected to experience a rapid development in the forthcoming years. Calculations showed the water availability in the upper aquifer is limited. Moreover, seasonal fluctuations in heads reduce its extraction capacity up to 44%. In contrast, storage is substantially higher in the deep aquifer. Larger quantities and lower extraction costs make this layer a more reliable source for water supply. Findings from this study will be used by authorities to update the current legislation on groundwater abstraction. Nevertheless, it is argued that to achieve a long-term sustainability, policies should not limit solely to control regulations but also to economical strategies and the expansion of the infrastructure system.