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Volume 15 (1966)
- Issue 6 Pages 289-
- Issue 5 Pages 209-
- Issue 4 Pages 165-
- Issue 3 Pages 103-
- Issue 2 Pages 69-
- Issue 1 Pages 1-
Volume 15, Issue 4
Displaying 1-6 of 6 articles from this issue
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Nagao IKEDA, Haruo MUTO1966 Volume 15 Issue 4 Pages 165-168
Published: July 15, 1966
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSA simple and rapid method was investigated for the determination of [Co (NH3) 6] 3+, [Co (NH3) 5Cl] 2+ and Co2+ ions in their mixture by the aid of the direct isotope dilution method. [Co (NH3) 6] 3+ ion was separated in the form of [Co (NH3) 6] C13⋅2CdCl2⋅3H2O by treating with the equal volume of 10% CdCl2 solution. [Co (NH3) 5Cl] 2+ ion was separated in the form of the [Co (NH3) 5Cl] Cl2 precipitate by adding conc. HCl to 1.5 N acidity. Co2+ ion was separated from the cation-exchanger bed column by eluting with 1N HCl. The determinations of several to several tens mg of these ions are possible within ±3% error.
The simple procedures for the preparation of 60Co-labelled [Co* (NH3) 6] Cl3 and [Co* (NH3) 5Cl] C12 by the radiosynthetic method are also given.View full abstractDownload PDF (452K) -
Takeshi OKADA1966 Volume 15 Issue 4 Pages 169-180
Published: July 15, 1966
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSDetermination of volume self-diffusion constants of 59Fe in the polycrystalline Fe-Ni and Fe-Co alloys has been carried out in the temperature range 750 to 1200°C by residual activity technique. These include an α-γ transformation, a magnetic transformation and an orderdisorder transformation where diffusion coefficients vary abnormally out of the Arrenius relation. Discontinuous decrease of the diffusion coefficients is observed owing to the transformation from α to γ phase and the differences decrease with an increase in the concentration of alloying elements Ni and Co. The activation energy of diffusion in γ phase determined by the Arrenius relation varies with the concentration of alloying elements. There are rapid decrease from the side of Fe, then slow increase and a maximum at about Fe-50%Co and Fe-75%Ni. Autoradiograph has been taken after removal for determination of diffusion constants and make clear a behavior of the surface diffusion in comparison with the microstructure.View full abstractDownload PDF (7517K) -
Toshio ISHIYAMA, Takashi MATSUMURA, Tetsuo MAMURO1966 Volume 15 Issue 4 Pages 181-186
Published: July 15, 1966
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSIt is desirable for the flocculation of radioactive waste water to achieve a high removal at a neutral condition. The utilization of cellulose ion exchanger as the agent for the bentonite flocculation has been interested and the decontamination properties of cellulose ion exchanger-bentonite flocculation have been studied with respect to the removal of radioactive nitrosylruthenium ions. The DEAF, cellulose-bentonite flocculation is especially effective in removing the nitronitrosylruthenium complex, achieving a removal higher than 98%, where the formation of“organo-clay complex”through the combination of DEAE cellulose and bentonite particles is assumed to play an important role in raising the removal of radioactive ruthenium, possibly because of the high adsorption capacity of“organo-clay complex”against the complexed anion [RuNO (NO2) 4OH] 2-.View full abstractDownload PDF (636K) -
Yoshiro ONOZAWA1966 Volume 15 Issue 4 Pages 187-194
Published: July 15, 1966
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSIt has been reported that the internal radiation by means of β-emitting radioisotopes, such as 32P and 35S, might be useful for the mutation induction in crop plants.
In this experiment, the influences of different conditions at seed treatment, i.e, soaking time, temperature, physiological condition of seed, etc., on the RI absorption and some biological effects were investigated.
It was observed that the RI absorption by seed took place actively after their root protrusion. In dormant seed treatment, thus, there was much variation in amount of absorbed RI among seeds, depending on the lack of uniformity of germination.
The amount of RI absorption was not so changed by the different soaking temperatures unless it was too low for germination, but changed by the different volumes of treated RI solution (ml/seed), and the kind of seed bed for soaking.
It was suggested that the treatment of pre-soaked and germinated seed was more efficient for shortening of soaking time and keeping uniformity of RI absorption among treated seeds. In the case of 32P treatment for germinated barley seed, however, the physiological damages in treated generation and mutation frequency in next generation were slightly lower compared with that of dry seed treatment.View full abstractDownload PDF (2493K) -
[in Japanese], [in Japanese]1966 Volume 15 Issue 4 Pages 195-207
Published: July 15, 1966
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (13987K) -
1966 Volume 15 Issue 4 Pages A683-A256
Published: July 15, 1966
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (7229K)
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