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Volume 45, Issue 9
Displaying 1-12 of 12 articles from this issue
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Toshiharu TAKEISHI, Satoshi OHDOI, Masabumi NISHIKAWA1996 Volume 45 Issue 9 Pages 537-544
Published: September 15, 1996
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSAt present, the tritium recovery system with a heated precious metal catalytic oxidation bed followed by a cooled adsorption bed is used to recover tritium when it is released into the room air of tritium handling facilities. But this arrangement of the tritium recovery system has such disadvantage as to require a large capacity of adsorption bed because a large amount of water vapor in the room air has to be recovered with the released tritium. The tritium recovery efficiency with this arrangement decreases when trouble occurs with heating device of the catalyst bed or cooling device of the adsorption bed.
The tritium recovery system constituted by a pre-adsorption bed with no cooling device followed by a precious metal catalytic oxidation bed with no heating device is proposed in this paper. In this new arrangement, the tritium recovery activity of the precious metal catalytic oxidation bed is maintained because water vapor is taken away from the process gas in the pre-adsorption bed to such a degree as that catalytic oxidation is not hindered, and tritium is captured to hydrophilic substrate of the precious metal catalyst with the higher T/H ratio than that in the inlet gas stream through adsorption and isotope exchange reaction after oxidation in the proposed recovery system.View full abstractDownload PDF (860K) -
Hiromitsu OGATA, Hiroshi TERADA, Yoshiro IZUMO1996 Volume 45 Issue 9 Pages 545-550
Published: September 15, 1996
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSIn a previous paper, we studied elimination and presence rates of nuclides injected in irradiated mice to investigate metabolic mechanism of several essential metals in injured mice leading to recovery after sublethal irradiation, and it was observed that the elimination and the presence rates of elements in tissues and organs showed a difference between the doses, particularly for 59Fe in liver and blood of mice. In this paper, further observations with biochemical states of 59Fe in the blood of irradiated mice are described as well as with distribution of 59Fe in the blood. An accumulation of 59Fe to erythrocytes was remarkably decreased by the irradiation, and a big radioactive peak (P-1) was seen in a profile of gel filtration of hemolysates in both unirradiation (control) and irradiation samples 2 days after the irradiation. At 8 days after the irradiation, the presence rate of 59Fe in the erythrocytes increased, and in the profile of gel filtration, for 10 Gy irradiation, the peak P-1 decreased and another radioactive peak was observed, but the difference between 4 Gy and control was not clear. These results suggested a metabolic process leading individuals to recovery from injury after irradiation.View full abstractDownload PDF (529K) -
Hiromitsu OGATA, Hiroshi TERADA, Yoshiro IZUMO1996 Volume 45 Issue 9 Pages 551-555
Published: September 15, 1996
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSIn a previous paper, in order to investigate metabolic mechanism of several essential metals in injured mice leading to recovery after sublethal irradiation, we studied on elimination and presence rates of nuclides injected to irradiated mice, and we observed that the remarkable increasing of presence rate of 59Fe in liver by the irradiation. In this paper, biochemical states and distribution of 59Fe in liver of mice exposed to γ-rays of 4 Gy or 10 Gy were observed. Two main radioactive peaks (P-1 and P-2) were observed on the gel filtration profile of the supernatant of homogenized liver of unirradiated mouse, at 2 days after the irradiation, P-2 decreased clearly. However, at 8 days after the irradiation, proportion of P-2 increased, and this increasing of P-2 may be closely related to the recovery process from injury after the irradiation. Furthermore, SDS-polyacrylamide gel electro-phoresis analysis of P-1 and P-2 showed difference between doses. In addition, the distribution rates of 59Fe in main protein compositions of liver were different between doses and days after the irradiation, and it suggests the influence of the irradiation to iron-binding proteins.View full abstractDownload PDF (458K) -
Jun-ichi MATSUDA1996 Volume 45 Issue 9 Pages 556-571
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
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Nobuyuki SUGIURA, Toshiso KOSAKO, Masashi ENDO, Kazuyoshi EDA1996 Volume 45 Issue 9 Pages 572-578
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
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1996 Volume 45 Issue 9 Pages 579-580
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
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Yusuke UJIHIRA1996 Volume 45 Issue 9 Pages 581-587
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
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1. Neutron Physics (Nuclear Reaction)Masaharu NAKAZAWA1996 Volume 45 Issue 9 Pages 588-596
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
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[in Japanese]1996 Volume 45 Issue 9 Pages 597-598
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
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[in Japanese]1996 Volume 45 Issue 9 Pages 599-600
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
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[in Japanese], [in Japanese]1996 Volume 45 Issue 9 Pages 601-602
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
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[in Japanese]1996 Volume 45 Issue 9 Pages 603-604
Published: September 15, 1996
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (300K)
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