巻号一覧
8 巻 (1983)
- 6 号 p. 328-
- 5 号 p. 258-
- 4 号 p. 194-
- 3 号 p. 130-
- 2 号 p. 66-
- 1 号 p. 2-
8 巻, 6 号
選択された号の論文の6件中1～6を表示しています
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川崎 尚1983 年 8 巻 6 号 p. 328-339
発行日: 1983/11/01
公開日: 2011/03/04
ジャーナル フリーAmino acid transport in small intestine has been briefly reviewed. The specificity of the transport systems has not been conclusively classified yet. Simple diffusion, sodium-dependent and -independent transports are generally involved in amino acid transport. Experimental materials and methods used are very important to deduce any definitive conclusion regarding the specificity. Membrane vesicles prepared either from brush border or basal lateral membrane are assumed to be best to analyze the specificity, energy coupling and regulation of the transport. Regulation of amino acid transport has been noticed in semistarved state, diabetic condition and developing process. In these cases, changes in kinetic parameters conflict each other. Therefore, amino acid transport in small intestine requires much more detailed studies on the kinetics.抄録全体を表示PDF形式でダウンロード (1787K) -
竹沢 真吾, 岡野 泰則, 酒井 清孝, 平田 彰1983 年 8 巻 6 号 p. 340-350
発行日: 1983/11/01
公開日: 2011/03/04
ジャーナル フリーThe purpose of this paper is to review most recent separation techniques utilizing dialysis membrane, filtration membrane and liquid membrane with respect to mass transport.
The boundary film formed on dialysis membrane plays an important role in mass transport, which is probably a rate-determing step for solutes with small molecular weight. Current modules for hemodialysis are modified for the decrease of mass transfer resistance caused by the film.
In the case of recently available dialyzers, the ratio of membrane permeability (Pm) to reciprocal of mass transfer resistance through the film (Kb) is 0.248 for urea. However, Pm/Kb is 1.10 in an out dated module.
Pore theory will predict the desirable structure for hemodialysis membrane, which is 10 μm or less in thickness, 80 A in pore diameter and 0. 15 in ratio of total cross-sectional pore area to effective membrane area.
Filtration properties are generally related to the formation of concentration polarization and gel layer on the membrane surface, which may be eliminated to some extent by the use of pulsatile flow. The movement of red blood cells is not effective for tearing off each layer because they have a tendency for being concentrated mainly at the axial side.
There are a few researches on the mass transfer through the liquid membranes, though, the application of the liquid membrane to the high performance separation has attracted special interest recently. The problems of the operation with the liquid membrane are membrane break up and demulsification. Especially, the demusification process is one of the important subject for a future study.抄録全体を表示PDF形式でダウンロード (1546K) -
上平 恒1983 年 8 巻 6 号 p. 351-359
発行日: 1983/11/01
公開日: 2011/03/04
ジャーナル フリーThe hydration behavior of the small molecules and biopolymers differs with the different molecules. The hydration of sugar depends on the conformation of the molecule. The water molecules in the near vicinity of the surface of the biopolymers and biomembranes are highly ordered and immobilized by the ionized group-dipole interaction. The physical state of water in the living cell is different from normal water. When the living cell is cooled or the inert gases are added to the cell, the ordering of water structure in the cell is promoted and the biological process is inhibited. The state of water is dynamically in responce to the conformational change of biopolymers.抄録全体を表示PDF形式でダウンロード (1314K) -
戸沢 修美, 野村 男次1983 年 8 巻 6 号 p. 361-363
発行日: 1983/11/01
公開日: 2011/03/04
ジャーナル フリーIt was tried to endow the UF-membrane with a fouling-resistant property against protein by forming the protective coating of soybean lecithin on a surface of the membrane of hollow fiber UF-modules. UF-modules treated with soybean lecithin were used twice for the concentration of soy milk; as a result, the performance of treated UF-modules was unchanged during duplicates.抄録全体を表示PDF形式でダウンロード (249K) -
カラメルの限外濾過 第8報岸原 士郎, 釜田 和彦, 藤井 聰, 河本 正彦1983 年 8 巻 6 号 p. 365-370
発行日: 1983/11/01
公開日: 2011/03/04
ジャーナル フリーIn ultrafiltration of caramel solution the rejection of coloring matters varied according to the operating conditions. In order to elucidate the relationship between rejection and operating conditions, mechanism of membrane-permeation of coloring matters was analyzed on the assumption that both sieving effect of membrane and diffusivity of coloring matters only are involved in the transport of coloring matters through membrane. The rejections calculated according to the analyzed result were in good agreement with the observed ones.抄録全体を表示PDF形式でダウンロード (611K) -
岸原 士郎, 藤井 聰, 河本 正彦1983 年 8 巻 6 号 p. 371-374
発行日: 1983/11/01
公開日: 2011/03/04
ジャーナル フリーCommercial refined cane sugars still contain high-molecular-impurities such as acidified-ethanol-insoluble substances and turbid substances. These impurities were able to be satisfactorily eliminated by ultrafiltration and sufficiently by reverse osmosis. Ultrafiltration might be used for the production of specially pure sucrose free from these impurities. A small amount of these high-molecular-impurities reduced the flux in ultrafiltration of the sugar solution. From the degree of decline in flux, the level of these impurities in different sugars may be roughly judged.抄録全体を表示PDF形式でダウンロード (518K)
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