巻号一覧
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18 巻, 12 号
選択された号の論文の8件中1～8を表示しています
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小野寺 真作, 永田 昌久, 塚田 尚史, 西谷 昌弘1976 年 18 巻 12 号 p. 743-753
発行日: 1976/12/30
公開日: 2009/03/31
ジャーナル フリー軽水炉圧力容器では,圧力容器部材の大型化と安全性の向上への要請により,使用される鋼材への要求はますます厳しくなってきた。ここ数年来,これらの材料は同じ材料規格の規定(SA533, SA508など)内にありながら,その性能の実質は飛躍的に改良されており, 400-500t大型鋼塊から機械的性質,溶接性,内部性状ともに優れた材料を製造するに至っている。
本稿では,軽水炉圧力容器の大型化の現状と大型部材の製造上の主眼点を,その材料特性を含めて紹介する。抄録全体を表示PDF形式でダウンロード (2776K) -
上野 馨1976 年 18 巻 12 号 p. 754-759
発行日: 1976/12/30
公開日: 2009/03/31
ジャーナル フリー基礎科学の研究,燃料の製造工程,使用済み燃料の再処理などで生じた放射性廃液の貯蔵と処分に関する多くの問題は,核分裂によって生じるエネルギーを確保するため,どうしても解決されなければならない重要な事柄である。
本稿では,危険性が大きいため環境への移行が厳しく規制されているα放射性核種について,各種放射性廃液からの分離法とその問題点を解説する。抄録全体を表示PDF形式でダウンロード (536K) -
三島 良績, 大井 正一, 海老沼 幸夫1976 年 18 巻 12 号 p. 760-766
発行日: 1976/12/30
公開日: 2009/03/31
ジャーナル フリーCompleted are the observation and analysis which have been made on author-assigned keywords to his paper by the Special Committee on Nuclear Documentation in cooperation with the INIS National Center. The keywords must be the most suitable information items in principle for a brief representation of the paper. Each of the keywords is a title-augmentative term, capable of structuring a very short summary. Consequently, it may be possible to transfer them easily to descriptors in every secondary information system. Keywords cited in the two journals of the Atomic Energy Society of Japan are considerably effective in general to get a high quality of indexing and a subsequent high quality of information retrieval, because of both the indexing consistency of 66% and the hit retrieval consistency of 75% in the INIS. On the other hand, it is stressed that the keywords should be selected from the terms in title and abstract of the paper except for short notes. Resulting from the experience in checking of the keywords, a guideline for their selection and description are proposed over eight items on trial so that more adequate assignment can be uniformly attained by all authors concerned.抄録全体を表示PDF形式でダウンロード (618K) -
安 成弘, 柴田 俊一, 佐藤 禎1976 年 18 巻 12 号 p. 767-773
発行日: 1976/12/30
公開日: 2009/03/31
ジャーナル フリーThe neutron irradiation facility of Musashi Institute of Technology Reactor (TRIGA-II) was licensed by Science and Technology Agency to be used for the medical irradiation purpose in July 20, 1976.
The remodeling process is described here, and the results of the measurement at the irradiation field are discussed. The γ-ray contamination was reduced by virtue of the bismuth scatterer technique. The neutron intensity was enlarged by the cavity effect.
The characteristics of the optimized field is as follows: φth≈1.3×109 n/cm2·sec, γ-rays≈25R/hr, γ/n≈0.5% in rem. Comparing with the Heavy Water Facility of KUR, the comparable γ/n ratio was obtained while the thermal neutron intensity was 1/3 of KUR.抄録全体を表示PDF形式でダウンロード (6986K) -
妹尾 宗明1976 年 18 巻 12 号 p. 781-785
発行日: 1976/12/30
公開日: 2009/03/31
ジャーナル フリーA serial process is proposed for safe and economical synthesis of strontium titanate, which compound is suitable to prepare heat source using a radioactive nuclide, 90Sr, in fission products. The process is based on a method previously reported to synthesize the compound by calcining a mixture of strontium nitrate and metatitanic acid. In the process, the synthesis in a metalic apparatus is realized for enough low calcining temperature, and radioactive contamination level accompanied is much reduced. Although the density of the sintered ceramic products in the present process is lower than in the conventional method, the products can be practically used for heat source without any serious trouble presumed. The solidification of a large amount of radioactive strontium waste is possible in the same way by adopting the process.抄録全体を表示PDF形式でダウンロード (434K) -
安達 公道, 岡崎 元昭1976 年 18 巻 12 号 p. 786-795
発行日: 1976/12/30
公開日: 2009/03/31
ジャーナル フリーIn non-accelerated upward two phase flow, irreversible energy dissipation is caused by wall friction and interphase friction between gas and liquid due to slip. These two components of energy dissipation are deduced from two different methods; one is from equations of force and energy balance and the other from analysis of gedanken-experiment on the gravitational head of two phase flow.
Frictional force due to wall must have same magnitude per unit volume in both liquid and gas. Moreover, the characteristics of energy dissipation were investigated in a circular pipe and in nuclear fuel assemblies using the data of pressure loss. It is found that these characteristics show strong dependence on flow pattern and rod bundle arrangement.抄録全体を表示PDF形式でダウンロード (750K) -
重富 康正, 小嶋 健博, 品川 睦明1976 年 18 巻 12 号 p. 796-799
発行日: 1976/12/30
公開日: 2009/03/31
ジャーナル フリーStudies have been made on the extraction of U (VI) from sea water by the adsorption on the gel particles containing titanium hydroxide. The adsorbents were prepared with acrylamide, N, N'-methylenebisacrylamide and titanium hydroxide. Uranium (VI) was able to be desorbed from the adsorbent with 1 M sodium carbonate or 1 M ammonium carbonate solution. The following various factors affecting the extraction of U (VI) were studied; the amount of adsorbent, the effect of temperature on the adsorption, the stirring time, the recycle usage of the adsorbent, etc. It was found that the adsorption of U (VI) tended to rise with the increase of shaking time, though it was not affected by temperature. When 25g of adsorbent was added to 40 l of natural sea water, 84 μg of U (VI) was able to be extracted by slow stirring for 24 hr. It seems that the proposed method having the better selectivity of adsorption and separation is superior to the method using ion exchange resin.抄録全体を表示PDF形式でダウンロード (280K) -
1976 年 18 巻 12 号 p. 800-801
発行日: 1976/12/30
公開日: 2009/03/31
ジャーナル フリーPDF形式でダウンロード (214K)
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