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Chia-Lian Tseng
1976 Volume 25 Issue 9 Pages
523-526
Published: September 15, 1976
Released on J-STAGE: September 07, 2010
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This paper deals with a convenient method in the determination of trace amounts of mercury in water. After being irradiated with neutrons, water sample was treated with 7.0M HClO
4 solution and mercury was extracted with lubricating base oil. In such a simple operation, the sensitivity can reach 10-8g Hg/
4ml H
2O.
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—Interaction of Radiocobalt with Some Amino Acids—
Yuichiro KIMURA, Yoshihide HONDA
1976 Volume 25 Issue 9 Pages
527-533
Published: September 15, 1976
Released on J-STAGE: September 07, 2010
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The interaction of radiocobalt with glycine, alanine or aspartic acid dissolved in seawater was investigated by means of adsorption on Chelex 100, solvent extraction with dithizone or gel filtration chromatography.
Although the distribution coefficients of Co
on Chelex 100 decreased gradually with ageing even in the absence of organic matter, much more decreases were observed in the presence of the amino acids. The distribution coefficients on the resin reached equilibrium states in about 20 days.
The extraction of cobalt with dithizone in carbon tetrachloride was also inhibited in the presence of the amino acids. Alanine and aspartic acid showed a similar interfering tendency in both adsorption on Chelex 100 and dithizone extraction, while glycine inhibited dithiz one extraction more than adsorption on Chelex 100.
From the fractionation of Co
by Sephadex G-10 gel filtration chromatography, the higher molecular species of Co
associated with the amino acids occurred after several days ageing and then increased together with decreasing in the lower molecular species.
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Yoshiko MATSUI, Tomihiko FURUTA, Soji MIYAGAWA
1976 Volume 25 Issue 9 Pages
534-539
Published: September 15, 1976
Released on J-STAGE: September 07, 2010
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The possibility of radioisotope X-ray absorptiometry to determine the particle size of powder in conjunction with sedimentation was investigated.
The experimental accuracy was primarily determined by C0w and X-ray intensity.
whereC0'=
weight concentration of the particle in the suspensionw'= (μ/ρ)
l/ (μ/ρ)
s-ρ
l/ρ
sρ;
density μ/ρ;
mass absorption coefficient, suffix l and s indicatedispersion and particle, respectively.
The radioisotopes, Fe-55, Pu-238
and Cd-109
have high w-values over the wide range of the atomic number. However, a source of high μ
value such as Fe-55
is not suitable because the optimal X-ray transmission length, Lopt is decided by the expression,
μ
lLopt≈2/ (1+
C'
0w')
by using Cd-109 Ag
KX-ray source, the weight size distribution of particles from the heavy elements such as PbO
2 to light elements such as Al
2O
3 or flyash was determined.
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Optimum Setting of Time Constant
Takami KOYANAGI, Sinichi NAKAJIMA
1976 Volume 25 Issue 9 Pages
540-545
Published: September 15, 1976
Released on J-STAGE: September 07, 2010
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The statistical error of liquid level controlled by radiation relay is analysed and a method of minimizing the error is proposed in this paper.This method comes to the problem of optimum setting of the time constant of radiation relay. The equations for obtaining the value of time constant are presented and the numerical results are shown in a table and plotted in a figure.The optimum time constant of the upper level control relay differs entirely from that of lower level control relay.
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Toshiyuki KIDA, Akira SUZUKI, Katsuko KOBAYASHI
1976 Volume 25 Issue 9 Pages
546-551
Published: September 15, 1976
Released on J-STAGE: September 07, 2010
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When the photoscintillo-roentgenography is used for relating the scintigram of internal organs to the anatomic structures, this method is found to hove some defectsthe difference of magnification between the emission scan and the roentgenogram, the inaccuracy due to the geometric distortion of the X-ray image, the impossibility of the simultaneous photographing of the scan and the X-rays, etc.Then, to diminish the influence of these defects we improved on the photographic recording system of a dual-head scanner, and made use of the transmission scanning method. That is, we combined the recording parts, Ch1 and Ch2,
into one system, using Ch1 for the light source of transmission scan and Ch2 for that of emission scan. In this way, we managed to make the two incident rays from those light sources converge into a focus upon a film. Thus we could perfrom a simultaneous emission-transnission scaning, by moving, at the same time in the same direction, the scanning detector over the patient and the small radioactive source (
241Am)
under him. This method can be applied to any radioactive nuclide to be used in transmission scanning and emission scanning.As the result of applying this method clinically in our department, the method has proved to be very useful for anatomic localization.
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Toraji IRIFUNE, Yoshio ONAI
1976 Volume 25 Issue 9 Pages
552-555
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
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Tomoo SAITO, Yumiko NISHIYAMA, Kazuo WATANABE, Naotake MORIKAWA
1976 Volume 25 Issue 9 Pages
556-558
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
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Kouichi TAKIMOTO, Kazumi SAITO, Zenzaburo KASAI
1976 Volume 25 Issue 9 Pages
559-562
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
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II: RIAMAT T4 Kit
Hisashi BUNKO, Kinichi HISADA
1976 Volume 25 Issue 9 Pages
563-566
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
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Kazuyuki OYAMA, Kikuo MACHIDA, Tsutomu WATARI, Sanshin HAYASHI, Akira ...
1976 Volume 25 Issue 9 Pages
567-570
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
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—Ion Backscattering Method—
Akio HIRAKI
1976 Volume 25 Issue 9 Pages
571-581
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
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Committee on Test of Transport Packaging for
1976 Volume 25 Issue 9 Pages
582-589
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
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Detection of 13C Tracers by NMR Spectroscopy and Its Application (2)
Haruo SETO
1976 Volume 25 Issue 9 Pages
590-597
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
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1976 Volume 25 Issue 9 Pages
A1659-A1210
Published: September 15, 1976
Released on J-STAGE: July 21, 2010
JOURNAL
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