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Volume 17, Issue 10
Displaying 1-7 of 7 articles from this issue
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(I) Volatility of RutheniumKazumi IWAMOTO, Teruo KIKUCHI1968 Volume 17 Issue 10 Pages 467-470
Published: October 15, 1968
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSPhosphate glass was prepared by heating the mixture of synthetic Purex 1 WW waste solution and phosphoric, phosphorous or hypophosphorous acid up to 1100°C, and the volatilization behavior of Ru was studied. The above three glass-forming reagents were effective in the same degree in restricting the volatilization of Ru; about 90% of Ru in the waste solution was retained in the glass. It was made clear that the glass with 65 wt % P2O5 would be desirable from the view points of the suppression of Ru vaporization and of the preparation of the glass containing large amount of waste oxide.View full abstractDownload PDF (483K) -
(II) Leaching of Glass with WaterKazumi IWAMOTO, Teruo KIKUCHI1968 Volume 17 Issue 10 Pages 471-475
Published: October 15, 1968
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSThe leachability of 137Cs and P from the phosphate glass, which was prepared by heating the mixture of synthetic Purex 1 WW waste solution and phosphoric acid (P2O5 content in the glass was 65 wt. %) up to 1100°C, was examined with distilled water, tap water and sea water. The following results were obtained; (1) The leachability of 137Cs with distilled water was less than that with tap water or sea water, but that of P did not largely depend on a kind of water. (2) The leachability increased remarkably with temperature. (3) The leaching data was correlated by introducing the initial activation energy spectrum for the reaction between glass component and water.View full abstractDownload PDF (496K) -
Akiyo SHIGEMATSU, Mareichi TOYOHARA, Noboru TOKUNAGA, Tohru SUEYOSHI, ...1968 Volume 17 Issue 10 Pages 476-482
Published: October 15, 1968
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSA new equipment, “Film Scintillation Counter”, was applied for quantitation of autoradiography. It has been shown that the radioactivity of low energy beta emitters such as tritium and 14C are determined very reliably, easily and rapidly by evacuating the space between the surfaces of sample and scintillator sheet of a scintillation probe, in which the sheet is combined with a prismatic light guide for dividing and transmitting the optical scintillae into two phototubes. Owing to the evacuation, counting of radioactivity has been achieved very efficiently with tritiated samples, even when they are far from the scintillator surface. In this case, 4.5% for tritium and 45% for 14C specimens, respectively, has been found.
Examples were obtained from the mice into which both 14C-6-methylcholanthrene and 3H-L-lysine or one of them were administered by peritoneal injection. The mice frozen 1, 6, 24, and 72 hours, respectively, after injection, were sectioned by Leitz 1300 microtome. The thin section, 10 μ, sticked on a glass plate by a piece of binary adhesive plastic tape, Scotch 3M-No. 465, in a -25°C chamber, was transfered and dried in a chilled tank by evacuating in it. Since the temperature in the tank was returned subsequently till the room temperature through gradually heating, the specimens were taken out from the tank and on which a thin colloidal carbon membrane was mounted by carbon spattering. Radioactivity of every organ in a mouse-whole body section was counted by the counter and then the section was contacted with double color emulsion to obtain 3H, 14C-double autoradiographic image.
The comparison of the counting data and the autoradiographic data showed that both are parallel approximately, even though each data owned to respective property. The counting data presented that the counter could catch easily the wide ranges from 0 to 1, 000, 000 cpm in each organ, while the autoradiographs could distinguish between the radioactivity value in an organ and 2 or 1/3 fold- value in the other organ than that of the organ. Therefore, fine autoradiographic image by just exposure period for the peritoneal portion was obtained on only portion of it, but not the other portions. On the contrary, the autoradiographic images showed successfully the distinction of the label in body fluid and some parts of the intestinal duct. The crowded blue or red image was due to 14C or tritium in body fluid, while the clearly printed blue image of intestinal duct was due to 14C-label in some parts of the intestinal duct. Both counting and autoradiographic data presented that the excretion of 14C-radioactivity from the mouse body was lower than that of 3H-lysine.View full abstractDownload PDF (3855K) -
Mitsuyoshi MATSUO, Ei-ichi MATSUI, Toshiyasu MATSUO, Yosihiko KASIDA1968 Volume 17 Issue 10 Pages 483-485
Published: October 15, 1968
Released on J-STAGE: July 21, 2010
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[in Japanese]1968 Volume 17 Issue 10 Pages 486-495
Published: October 15, 1968
Released on J-STAGE: July 21, 2010
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1968 Volume 17 Issue 10 Pages 496-515
Published: October 15, 1968
Released on J-STAGE: July 21, 2010
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1968 Volume 17 Issue 10 Pages A899-A464
Published: October 15, 1968
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (3559K)
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