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Volume 33, Issue 11
Displaying 1-18 of 18 articles from this issue
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Kunio OOHASHI, Hideki TAKIGUCHI, Naotake MORIKAWA1984 Volume 33 Issue 11 Pages 747-753
Published: November 15, 1984
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSRecoil tritium reactions in the aromatic ring were investigated with toluene and benzonitrile in the moderator free and the C6F6-moderated systems in terms of the intramolecular tritium distribution, the relative tritiation rate, and the isotope effect in toluene. The reactions free from hexafluorobenzene are in essential agreement with non-selective nature shown in hot atom reactions. The addition of the moderator to the systems changes more markedly the uniform labeling to o, p-orientation in toluene than in benzonitrile, and the 1.17 PhCH3/PhCN tritiation rate (in PhCH3-d8/PhCN, 0.942) to the 1.89 PhCH3/PhCN one (in PhCH3-d8/PhCN, 1.51) when the mole ratio of C6F6/substrate is about 100. These findings agree with the electrophilic nature of the tritium at lower energies. The H/D isotope effect in the moderated system is given as 1.89/1.51 or 1.25 and is substantially the same as that (1.24) in the moderator-free system.View full abstractDownload PDF (769K) -
Toyosato TAMAI, Masatada TANABE, Kiichiro MIZUKAWA, Kanji KOJIMA, Hito ...1984 Volume 33 Issue 11 Pages 754-759
Published: November 15, 1984
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSA methods for liver scintigraphy for finding the effective liver volume were developed. Matrix ROI (region of interest) was set on the anterior liver scintigram with 99mTc tin colloid and 198Au colloid, respectively. The various depths of liver under matrix ROI were calculated from the count rate noting the absorption coefficient. The effective liver volume was the sum total of the areas of matrix ROI to the various depths. In order to check the accuracy of this method, the effective liver volume was calculated using the liver phantom and the patient's liver scintigraphy. The volume obtained for the liver phantom was nearly equal to the real volume. The liver volume in 19 patients using 99mTc tin colloid and 198Au colloid showed good correlation with the volume as measured by computed tomography (CT) scan (r=0.841, r=0.749)View full abstractDownload PDF (685K) -
Syojiro KIMURA, Michiyo SAKO, Toshitaka KANBASHI, Hisanobu JO, Hiroaki ...1984 Volume 33 Issue 11 Pages 760-767
Published: November 15, 1984
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSThe enzymatic activities (in detail, amylase-, lipase- and protease-activity) of γ-irradiated pancreatin powder preparation decrease to 50-95% at doses range of 50 kR-8 MR. The dose-inactivation relation-ships vary depending on every different manufactory lot. In the case of higher moisture content preparation as irradiation sample, amylase activities are more stable, the other side, protease activities are less stable. On the variation of these activities by γ-irradiation, there are no difference between room temperature and lower temperature (-70°C) as irradiation condition. The D10 values of contamined bacteria and fungus (contamination number: about 1×103 cells/g and 9×102 spores/g) of a pancreatin preparation are 74 C/kg (280 kR) and 60 C/kg (230 kR) . Then, these values are corresponded to 645 C/kg (2.5 MR) and 540 C/kg (2.1 MR) as perfect sterilization.View full abstractDownload PDF (1035K) -
Kunihide NISHIZAWA, Takayuki OZAWA1984 Volume 33 Issue 11 Pages 768-775
Published: November 15, 1984
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSThis paper describes an access control system for a radioisotope laboratory. The system is composed of a personal computer, three card readers, an electric auto door, a hand foot cloth monitor, a monitor TV, a video tape recorder (VTR), and a thermo senser. The personal computer controls other equipment with a registered user's number. When a user inserts an identification card into the card reader, the computer stores the gate number, the user's number and the time; it processes those data and prints out a document. The VTR records the person passing through the gate to identify if he uses his card. It works only when the sensor catches users being within its sensitive area. This system proved to effectively prevent intrusion into the area of an unregistered person or release of contaminated materials from that area.View full abstractDownload PDF (4700K) -
Masakatsu SAEKI, Takakuni HIRABAYASHI1984 Volume 33 Issue 11 Pages 776-779
Published: November 15, 1984
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSThe desorption behavior of tritium from the glass ampoule which originally contained 37 GBq of carrier free tritium gas was studied by etching the surface with a diluted hydrofluoric acid solution or by heating at the constant rate up to 800°C. The total amount of tritium sorbed on the inner surface of the ampoule was found to be 3.9±0.7 GBq, This value corresponded to more than 10% of tritium contained in the ampoule. The release rate of tritiated water (HTO) was 2.3 kBq/cm2⋅min, and the amount of HTO desorbed was strongly depended on the atmosphere. Thus, special precaution should be paid to the processing of a vessel once containing such an amount of tritium.View full abstractDownload PDF (412K) -
Yuich NARITA, Harumi KATO, Ryuji IGARASHI, Hideo TAMAMOTO1984 Volume 33 Issue 11 Pages 780-783
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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Michikatsu TAKAI, Masao KANEKO, Makio KUDO, Choichiro KIDO, Shinji TAK ...1984 Volume 33 Issue 11 Pages 784-787
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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Hisamoto KURODA, Nobuyuki BANBA, Kikuo KASAI, Shinichi SHIMODA, Kazuyo ...1984 Volume 33 Issue 11 Pages 788-791
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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—The evaluation of Magnetic FT4 radioimmunoassay kit—Terunori MITSUMA, Masahiro CHAYA1984 Volume 33 Issue 11 Pages 792-795
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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Nobuyuki BANBA, Hisamoto KURODA, Yoshihisa HASHIGAMI, Kikuo KASAI, Shi ...1984 Volume 33 Issue 11 Pages 796-799
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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Haruhiko HARASHIMA, Takahisa HIRAISHI, Fumio MIKAMI, Hiroki YAMADA, Ta ...1984 Volume 33 Issue 11 Pages 800-803
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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—The evaluation of Magnetic ferritin kit—Terunori MITSUMA, Masahiro CHAYA, Tamako KATO, Ken MURAKAMI, Naoki NAK ...1984 Volume 33 Issue 11 Pages 804-807
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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—Pretreatment for incineration by demulsification—Syojiro KIMURA, Yuichi KONDO1984 Volume 33 Issue 11 Pages 808-811
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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Yasuhito OHKUBO, Akemi TOKOI, Hiroyuki KOHNO, Takahiko SUZUKI, Akiko K ...1984 Volume 33 Issue 11 Pages 812-813
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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Yoshikazu HASHIMOTO, Tsunehiko OTOSHI1984 Volume 33 Issue 11 Pages 814-823
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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Takashi MATSUYAMA1984 Volume 33 Issue 11 Pages 824-833
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
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1984 Volume 33 Issue 11 Pages 834
Published: 1984
Released on J-STAGE: July 21, 2010
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1984 Volume 33 Issue 11 Pages A81P-A118M
Published: November 15, 1984
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (3592K)
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