-
Yoshihiko MIZUMOTO, Shiro IWATA, Kazuhisa SASAJIMA, Yoshio YASE, Sohei ...
1980 Volume 29 Issue 12 Pages
585-589
Published: December 15, 1980
Released on J-STAGE: September 07, 2010
JOURNAL
FREE ACCESS
The mean contents of trace elements in anterior gray horn section of cervical spinal cords of six amyotrophic lateral sclerosis (ALS) cases were relatively determined against those of six control cases by α-particle excited X-ray fluorescence analysis. The anterior gray horn section of cervical spinal cord samples were excited by 1.6 Me V α-particle beam of 2 mm diameter accelerated with a Van de Graaff accelerator, and characteristic X-ray spectra were measured with a Si (Li) detector. From the peak areas on the X-ray spectra, the relative mean contents of the trace elements in cervical spinal cords of ALS and control cases were determined.As a result, the X-ray peaks of Al, Si, P, S, C1, K, Ca, Ti, V, Mn, Fe, Cu
and Zn
were detected. The contents of Al, Si, P, Ca, Ti, V, Mn
and Fe
in ALS cases were higher than those in control cases. The contents of S, Cl, K, Cu
and Zn
in ALS and in control cases were equal to each other within standard deviation.The precipitation mechanisms of Al, Si, P, Ca, Ti, V, Mn
and Fe
into cervical spinal cord of ALS cases are discussed on the basis of the previous studies.
View full abstract
-
—Determination of Antimony in Metallic Tin—
Tomihisa KAMBARA, Junsuke SUZUKI, Hiroe YOSHIOKA, Toshio NAKAMURA
1980 Volume 29 Issue 12 Pages
590-593
Published: December 15, 1980
Released on J-STAGE: September 07, 2010
JOURNAL
FREE ACCESS
Redox substoichiometry in neutron activation analysis has been applied to the determination of antimony content in metallic tin of chemical grade. The substoichiometric separation is based on the extraction of unreacted antimony (III)
with an excess of N-benzoyl-N-phenylhydroxylamine (BPHA) after the substoichiometric oxidation of antimony (III)
with potassium bromate. Interference for the quantitative substoichiometric oxidation of antimony (III),
caused by any other materials reacting with bromate, such as arsenic (III),
could be prevented by the addition of large amounts of antimony (III)
carrier before substoichiometric oxidation. Only about one hour is required for the antimony analysis of metallic tin, excluding the irradiation period of sample. The antimony content of 1.22±0.14μg in metallic tin (10 mg) was determined without separation of the matrix element.
View full abstract
-
Hiroyuki SHINOHARA, Yasushi KOGA
1980 Volume 29 Issue 12 Pages
594-598
Published: December 15, 1980
Released on J-STAGE: September 07, 2010
JOURNAL
FREE ACCESS
The lesion detectability with a scintillation camera as a function of count density was determined for the four spherical cold lesions with diameter 0.9-2.5 cm (in√2 step) within a uniform background activity. It can be seen from the curves that the lesion detectability in-creases with an increase in count density until 2 kcounts/cm2,
however it does not appreciably improve for count densities above 2 kcounts/cm2.
The curves also show that, for a giving count density, the lesion detectability decreases as the lesion size or object contrast decreases. From these curves minimum count density required for recognition of each cold lesion is de-duced. This value is applied to the evaluation of scintillation camera system.
View full abstract
-
Shigemitsu TANO, Hoshio EGUCHI, Isao YAMANE, Hiroshi YAMASHITA, Hikoyu ...
1980 Volume 29 Issue 12 Pages
599-601
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Teruko YAMANE, Nobuo FUKUDA, Tohru MATSUMOTO, Tatsuo ARAI
1980 Volume 29 Issue 12 Pages
602-604
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Shiro IWATA, Yoshihiko MIZUMOTO, Jitsuya TAKADA
1980 Volume 29 Issue 12 Pages
605-607
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Atsuo NAGATA, Tsuguo OOKUBO, Yosikatsu SAKAGISHI
1980 Volume 29 Issue 12 Pages
608-610
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
—Studies of SPAC T3 RIA Kit—
Makoto SEKIMOTO, Yoshie USUI, Yoko RI, Mitsuko NOBUHARA, Yukiharu MAJI ...
1980 Volume 29 Issue 12 Pages
611-613
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Teruo INO, Akira TAKEUCHI, Yasutsugu KAWAI, Kazutaka EJIRI, Fumio SASA ...
1980 Volume 29 Issue 12 Pages
614-617
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Hiroshi FUKAZAWA, Toshiro SAKURADA, Katsumi YOSHIDA, Hirofumi KITAOKA, ...
1980 Volume 29 Issue 12 Pages
618-621
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Michito ICHIMARU
1980 Volume 29 Issue 12 Pages
622-631
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Akira HASHIZUME, Tatsuji HAMADA
1980 Volume 29 Issue 12 Pages
632-647
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
1980 Volume 29 Issue 12 Pages
A2081-A144
Published: December 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS