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Kunikazu NOGUCHI, Masami SHIMIZU, Eiko SAIRENJI, Nagao IKEDA
1980 Volume 29 Issue 6 Pages
261-265
Published: June 15, 1980
Released on J-STAGE: September 07, 2010
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Determination of 15 elements in the dental porcelain powders (Vita VMK 68) marketed in Japan was done by means of non-destructive neutron activation analysis. The potassium and sodium contents showed less variations from powder to powder, and the uranium contents varied from a few ppm to 1090 ppm in a wide range. The high contents of uranium (345-1090 ppm) were detected in the powders of Enamel, Dentin, Effect, Color and Gum which were used for the superficial parts of a porcelain crown, while the low contents of uranium (1.6-2.7 ppm) were detected in those of Opaque and Translucent which were used for the core part and the top of the crown. Cerium and samarium were also detected in each powder in the amounts similar to those of uranium. The main radionuclides present in the porcelain powders were 238U,
235U,
234U,
234mPa,
234Th,
231Th
and 40K.
The activities of these nuclides were calculated and discussed.
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—Multivariate analysis of factors influencing on trace element contents in hair—
Akira IMAHORI, Ichiro FUKUSHIMA
1980 Volume 29 Issue 6 Pages
266-271
Published: June 15, 1980
Released on J-STAGE: September 07, 2010
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As a part of IAEA research project, “Activation analysis of hair as an indicator of contamination of man by environmental trace element pollutants”, a survey was carried out to elucidate the levels of various trace element concentrations in hair of local population in the Tokyo Metropolitan areas, by applying instrumental neutron activation analysis.A total of 202 scalp hair samples were collected from the inhabitants classified by sex and five age classes. Irradiation was made in the Rikkyo University 100 kW TRIGA MARK-II reactor. Using several combinations of irradiation time, cooling time and counting time, forty elements were determined.The relationship between several trace element contents in hair and such factors as sex, age class, hair treatment, smoking habit and dental treatment, was analyzed by using the method of multiple regression. It was shown that (1) Hair treatment had a predominant effect on the contents of bromine, magnesium and calcium in hair, (2) Aging and smoking contributed increasing mercury content in hair, and hair treatment acted reversely.
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Hiyoshimaru OYAMADA, Hideo KAWAI, Hiroyoshi FUKUKITA, Kiyoyuki NAGAIWA ...
1980 Volume 29 Issue 6 Pages
272-278
Published: June 15, 1980
Released on J-STAGE: September 07, 2010
JOURNAL
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Subtraction scintigraphy of the liver with 67Ga-
citrate and 99mTc-
colloid (
99mTc-
phytate) was performed by subtracting the image of the latter from the image of the former in 34 pa-tients who were suspected of having intrahepatic masses, especially hepatoma.The computer used was Scintipac 1200 (32 KW memories and 2.4MB×2 disk memories) .Both images were taken in a digital form (128×128 elements) . After normalizing both images, 4 different factors (0.6, 0.8, 1.0, and 1.2) were applied to the99mTc
image before the subtraction from the67Ga
image.We found that this technique was very useful for the detection of abnormal67Ga
accumulation in the liver.
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Ryuhei KATO, Ryoichi ONO
1980 Volume 29 Issue 6 Pages
279-281
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
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Tadashi ISHII, Kimiko HORIUCHI, Hiromichi NAKAHARA, Yukio MURAKAMI
1980 Volume 29 Issue 6 Pages
282-284
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
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Shiro IWATA, Yoshihiko MIZUMOTO
1980 Volume 29 Issue 6 Pages
285-287
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
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Midori SUZUKI, Toshihiko MITSUHASHI
1980 Volume 29 Issue 6 Pages
288-291
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
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Tadako KOUSAKA, Masao FUKUNAGA, Ituo YAMAMOTO, Shigeharu DOKHO, Rikush ...
1980 Volume 29 Issue 6 Pages
292-294
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
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Activity KAWAZOE, Hisashi ISHIZAWA
1980 Volume 29 Issue 6 Pages
295-298
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
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Hyobu ICHINOHE
1980 Volume 29 Issue 6 Pages
299-301
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
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Eiichi TANAKA, Norimasa NOHARA, Takehiro TOMITANI, Mikio YAMAMOTO, Hid ...
1980 Volume 29 Issue 6 Pages
302-303
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
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—Results of one-year clinical research—
Masaaki IIO, Yasuhiro MATSUMOTO, Nobuo SAKURAGAWA, Keiko IMAMURA, Tada ...
1980 Volume 29 Issue 6 Pages
304-313
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
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1980 Volume 29 Issue 6 Pages
A2033-A88
Published: June 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS