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Atsushi YUSA, Kazuhiro HASEBE, Yoshibumi YATSURUGI, Hideo HIGUCHI
1978 Volume 27 Issue 4 Pages
173-177
Published: April 15, 1978
Released on J-STAGE: September 07, 2010
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Residual radioactivity measurement is described for high purity silicon (purer than tennine) irradiated by pile-neutron to produce n-type silicon semiconductor. The silicon samples were irradiated in four different atomic reactors with thermal neutron fluxes of 0.12, 1.48, 1.8 and 5.5×1013n/cm2⋅sec. After irradiation, the sample was dissolved inHF-HNO
3,
and the solution dried. The residual radioactivity was measured by a 2π gas-flow low background GM counter. The only active species found was 32P,
which was formed by the consecutive reactions of 30Si (
n, γ)
31Siβ
-→
31P
followed by 31P (
n, γ)
32P.
The observed production rate for 32P
was in good agreement with the calculated one. This technique can be applied to estimate amounts of not only doped phosphorus but impurities such as gold in irradiated silicon. Tail part of a float-zone silicon rod contained about 0.01 atomic ppb of Au, but no activity was observed in its middle part. The present technique is suitable for checking and characterizing silicon rods before their neutron-doping.
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Kunio ITAKURA, Nobuo WADA
1978 Volume 27 Issue 4 Pages
178-182
Published: April 15, 1978
Released on J-STAGE: September 07, 2010
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The feasibility of 147Pm
and 3H β-
ray sources as static eliminator was experimentally investigated. A sheet of vinyl chloride of 0.1 mm in thickness was used as an example of electrified materials. Its surface charge densities before and after β-
ray neutralization were measured as the function of electrostatic charge changing the speed of the sheet and the distance between the β-
ray source and the sheet.With a 147Pm β-
ray source of 200mCi in effective activity, almost complete neutralization was found for the sheet with the charge density less than 6 × 10-6C/m2 running at the speed of 0.18 m/s. In the case of the running speed of 0.5 m/s frequently used in industry, the electrostatic charge below 3 × 10-6C/m2,
where corona diseharger is not so effective, was also perfectly eliminated. It was found that the optimal distance between the β-
ray source and the sheet was 10 em in the case of 147Pm.
The use of 3H β-
ray source of 1 Ci was not satisfactory.These results demonstrate that 147Pm β-
ray source operates most efficiently as static eliminator when the charge density of material and/or its moving speed is not high.
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Nobuto MORITA, Hiroyuki HAYAKAWA, Kohzo KAWAI, Yutaka NOTO, Taro OHNO, ...
1978 Volume 27 Issue 4 Pages
183-187
Published: April 15, 1978
Released on J-STAGE: September 07, 2010
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To clarify the mechanism of abnormal glucose metabolism in the secondary diabetes, we examined the dynamics of plasma glucagon levels in various diseases which may acompany glucose intolerance. Plasma glucagon responses to L-arginine were observed in 20 liver cirrhotics, 8 patients with chronic renal failure, 6 patients with chronic pancreatitis, 4 patients, with hyperthyroidism, 22 diabetics and 9 normal controls. Plasma glucagon levels were determined by the radioimmunoassay method of Unger using 125I
-glucagon and antiserum 30K which is specific for pancreatic glucagon.The following results were obtained; 1) In the cirrhotics, the plasma glucagon responses to L-arginine were significantly higher than in normal controls. The patients whose BSP retention at 45 minutes were above 30% showed higher plasma glucagon responses than in the patients whose BSP retention at 45 minutes were below 30%, suggesting that the more severely the liver was damaged, the more the plasma glucagon levels were elevated.2) In the patients with chronic renal failure, the plasma glucagon responses to L-arginine were also significantly higher than in normal controls. These abnormal levels were not improved by a hemodialysis, although serum creatinine levels were fairly decreased.3) In the patients with chronic pancreatitis, the plasma glucagon responses to L-arginine were the same as those in normal controls.4) In the patients with hyperthyroidism the plasma glucagon responses to L-arginine seemed to be lower than normal controls.5) In the diabetics, the plasma glucagon responses to L-arginine were almost the same as in normal controls. However their glucagon levels seemed to be relatively high, considering the fact that diabetics had high blood glucose levels.
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Ikuo ODANO, Kunio SAKAI, Toshiro SATO, Akira SAITO, Isamu SUGIYANAGI, ...
1978 Volume 27 Issue 4 Pages
188-190
Published: April 15, 1978
Released on J-STAGE: September 07, 2010
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We have recently observed two patients with superior vena canal syndrome who showed a unique abnormality, so called“Hot Spot”, on the 99mTc-
phytate liver scintigraphy.This phenomenon seems to be related to the collateral venous circulation. It is supposed that its manifestation depends on the degree of venous dilatation of the chest and abdominal wall.
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Kunio CHAYA, Norikatsu HAMAMURA
1978 Volume 27 Issue 4 Pages
191-193
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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Masato YAMASHITA, Tatsuo MAEDA, Hiroyuki SHIOKAWA
1978 Volume 27 Issue 4 Pages
194-197
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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Katsuya NAGASE, Yoshinari ARAKAWA, Masayoshi TANAKA, Susumu IIDA, Kiyo ...
1978 Volume 27 Issue 4 Pages
198-200
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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Katsumi AOKI, Masaya KAWAKAMI
1978 Volume 27 Issue 4 Pages
201-203
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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—Synthesis of S-n-Butyl S'-p-tert-Butylbenzyl N-3-Pyridyl- (53H) -dithiocarbonimidate (Denmert®) —
Akira YOSHITAKE, Takeshi KAMADA, Iwao NAKATSUKA, Masaaki HAZUE
1978 Volume 27 Issue 4 Pages
204-206
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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Katsuya NAGASE, Isao HIROKAWA
1978 Volume 27 Issue 4 Pages
207-209
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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Tatsuhiko MIKUNI
1978 Volume 27 Issue 4 Pages
210-212
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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Arpad Veres, Kenji YOSHIHARA, Nagao IKEDA
1978 Volume 27 Issue 4 Pages
213-222
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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Kenji SAEGUSA, Noboru ARIMIZU, Tetsuo YAMAMOTO
1978 Volume 27 Issue 4 Pages
223-227
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
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1978 Volume 27 Issue 4 Pages
A1811-A1708
Published: April 15, 1978
Released on J-STAGE: July 21, 2010
JOURNAL
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