巻号一覧
11 巻 (1986)
- 6 号 p. 314-
- 5 号 p. 248-
- 4 号 p. 186-
- 3 号 p. 126-
- 2 号 p. 62-
- 1 号 p. 2-
11 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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池田 富樹, 栗原 清二, 田附 重夫1986 年 11 巻 6 号 p. 314-325
発行日: 1986/11/01
公開日: 2011/03/04
ジャーナル フリーPhotoresponsive functions of rhodopsin (Rh) in visual cells of vertebrates and bacteriorhodopsin (bR), a photo-driven proton pump in Halobacteria, are reviewed. In both systems, photoisomerization of retinal moieties attached to opsin takes place very fast and this local change in conformation results in the change in conformation of Rh and bR. The photosignals are finally transformed into electrochemical potentials across the membranes. In the visual cells, successive amplifications of the initial photosignals take place in a sophisticated way, which has not been fully understood. In the course of the amplifications, change in physical properties such as conformation and phase seems to play an important roll. In order to achieve highly efficient photoresponsiveness in artificial systems, use of such changes in physical properties as a way of amplification may be highly appreciated. Artificial photoresponsive systems reported recently are discussed in relation to photoresponsiveness in nature.抄録全体を表示PDF形式でダウンロード (1457K) -
中野 昌俊1986 年 11 巻 6 号 p. 326-333
発行日: 1986/11/01
公開日: 2011/03/04
ジャーナル フリーIn mammals, trehalase is specifically localized in brush border membranes of intestine and kidney.
The reported values of some basic properties of intestinal and renal trehalase from mammals are similar : optimum pH, kinetic parameters of different animal species are of the same order of magnitude. On the contrary, very different molecular weights reported might be related to the solubilization procedures and to the methods of molecular weight determination. Using H2O-D2O sucrose density gradient centrifugation, molecular weight of native renal trehalase is calculated to be about 110, 000. Renal and intestinal trehalase are composed of the subunits (2 or 4 ?) of the same molecular weight.
In kidney, there are four species (forms) of trehalase. Intestinal and renal trehalase are different in the susceptibility to sodium dodecyl sulfate and Con A-sepharose interaction. It is probable that this difference is due to involving difference forms of trehalase in intestine and in kidney.
Physiological role of trehalase is discussed.抄録全体を表示PDF形式でダウンロード (910K) -
電解重合膜被覆電極の機能と応用大坂 武男, 小山 昇1986 年 11 巻 6 号 p. 334-343
発行日: 1986/11/01
公開日: 2011/08/16
ジャーナル フリーIn connection with the previous paper (Part 1) on the basic principle and apparatus of electrochemical polymerization, and the structures and properties of electropolymerized thin films, useful functions and applications of electropolymerized thin film-coated electrodes as composite electrode materials are briefly reviewed in this paper.抄録全体を表示PDF形式でダウンロード (1227K) -
石井 淑夫1986 年 11 巻 6 号 p. 345-354
発行日: 1986/11/01
公開日: 2011/03/04
ジャーナル フリーSustained rhythmic oscillations of electrochemical potential occur spontaneously across a fine-pore membrane doped with glycerol-α-monooleate (monoolein), sorbitan monooleate (Span 80) or glycerol trioleate (triolein), separating equimolar solutions of KCl and NaCl : these oscillations occur in the absence of any external stimulus such as voltage, an electrical current, a hydrostatic pressure, or osmotic pressure. As an extention of these phenomena, spontaneous firing was found in a Langmuir-Blodgett film (L-B film) of dioleoyllecithin (DOPC) deposited onto a porous membrane. By comparing temperature dependences of liquid film of triolein and LB film of DOPC, a plan was suggested a construction of molecular assemblies to obtain desired oscillation patterns and pattern stabilities. Furthermore, electrical properties of these membranes (triolein, monoolein and L-B film of DOPC) were discussed by measuring current controlled voltage characteristics. The membrane was found to exhibit the properties of switching and differential negative resistance. In this presentation, the speaker insisted that electrical oscillation should be explained by phase transition and that phases should be defined by electrical resistances.抄録全体を表示PDF形式でダウンロード (1260K) -
江口 民行1986 年 11 巻 6 号 p. 355-362
発行日: 1986/11/01
公開日: 2011/03/04
ジャーナル フリーThe polysulfon hollow fiber membrane filters were prepared by the phase inversion method. The membrane preparing solution having the phase inversion or transition temperature, below which a uniform solution changed into two separated phases, and the core solution having both comparatively mild coagulating effect and the lower temperature than the transition temperature were extruded simultaneously from a double ring nozzle. The membrane preparing solution was estimated to complete coagulation almost entirely before being introduced into the outer side coagulating liquid. The hollow fiber membrane filter prepared as mentioned above had circular pores in the outer surface and the uniform network structure in the cross section, but irregularly shaped pores in the inner surface. The observable maximum pore diameter in the inner surface was defind and utilized as the characteristic parameter of the membrane filter, which correlated quantitatively to permeabilities of uniform latex particles, permeabilities of the bovine serum proteins and bubbling points.抄録全体を表示PDF形式でダウンロード (1594K) -
K. SINGH, M. M. PANDEY1986 年 11 巻 6 号 p. 363-367
発行日: 1986/11/01
公開日: 2011/08/16
ジャーナル フリーPDF形式でダウンロード (451K)
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