巻号一覧
10 巻 (1985)
- 6 号 p. 328-
- 5 号 p. 268-
- 4 号 p. 204-
- 3 号 p. 138-
- 2 号 p. 76-
- 1 号 p. 2-
10 巻, 5 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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宮田 暉夫1985 年 10 巻 5 号 p. 268-278
発行日: 1985/09/01
公開日: 2011/03/04
ジャーナル フリーCollagen is a principal protein of connective tissue and recently interested as a biomaterial. Most of connective tissues exist as a membrane like structure in living body such as skin, blood vessel, cornea, basement membrane and so on. Collagen has two functions in vivo, that is, physical one supporting body and biological one controlling interaction with cells. Understanding biological property of collagen as well as its biochemistry becomes very important when applying it as a biomaterial.
Major antigenic determinant of collagen locates in telopeptides of the molecule though collagen is a poor antigen. Pepsin removes telopeptides and produces Atelocollagen which is much less antigenic than normal collagen.
Higher order structure (fibril structure) of collagen relates to expression of its biological activity in collagen-cell interaction. Platelet and fibroblast recognize collagen fibril structure. Chemical modification of collagen is useful to control collagen-cell interaction. Collagen isotypes must be considered in applying collagen to biomaterial. Collagen would be a important substratum of hybrid organs in which cells are incorporated. Biological property of collagen as a biomaterial is unique, which cannot be seen in synthetic polymers.抄録全体を表示PDF形式でダウンロード (1930K) -
北野 博巳1985 年 10 巻 5 号 p. 279-288
発行日: 1985/09/01
公開日: 2011/03/04
ジャーナル フリーRecent progress in the studies of cell membrane models stabilized by the polymerization is reviewed. Physical stabilities of liposomes are largely increased and permeation rates of solutes from the inner waterpool through membranes are strongly reduced by the polymerization. Catalytic properties of polymerized liposomes on the esterolyses were different from those of monomeric ones especially in their temperature dependences. Biological functions of polymerized liposomes such as carriers of membrane proteins are similar to those of monomeric or natural liposomes. Monolayer and deposited (Langmuir-Blodgett) membranes stabilized by the polymerization are also discussed.抄録全体を表示PDF形式でダウンロード (1140K) -
妹尾 学, 岩元 和敏1985 年 10 巻 5 号 p. 289-296
発行日: 1985/09/01
公開日: 2011/03/04
ジャーナル フリーRecent progresses on ion-exchange membrane technology are critically reviewed. This includes principally the papers published in 1982-1984. Especially, the following interesting topics are explained and discussed; new ion-exchange membranes, perfluorocarbon ion-exchange membrane such as Nafion membrane, instabilities accompanied by concentration polarization in electrodialysis including the mechanistic studies on water dissociation in salt-depleted layer at membrane surface, new functional membranes such as ion-gate membrane, and recent developments on ion-exchange electrodialysis and its applications.抄録全体を表示PDF形式でダウンロード (1286K) -
浅枝 正司1985 年 10 巻 5 号 p. 297-304
発行日: 1985/09/01
公開日: 2011/03/04
ジャーナル フリーPDF形式でダウンロード (1021K) -
松本 幹治, 大矢 晴彦, 大胡 素夫1985 年 10 巻 5 号 p. 305-306
発行日: 1985/09/01
公開日: 2011/03/04
ジャーナル フリーSeparation of ethanol-water mixture from alcoholic fermentation broth in which yeast is suspending is carried out by pervaporation, using hydrophobic microporous hollow fiber membrane of polypropylene. Results show that this membrane has a selective permeation ability of ethanol and has a potential to be applied as a new fermentation system.抄録全体を表示PDF形式でダウンロード (225K) -
松原 史卓, 黒川 洋一1985 年 10 巻 5 号 p. 307-309
発行日: 1985/09/01
公開日: 2011/03/04
ジャーナル フリーA modified lattice gas model for a monolayer of rod-like molecules has been proposed and investigated by using a Monte Carlo method. It has been shown that the monolayer is not uniform but consists of islands or aggregates.抄録全体を表示PDF形式でダウンロード (307K) -
神武 正信, 内田 幸生, 木村 利昭, 相良 康重, 渡辺 敦夫, 中尾 真一1985 年 10 巻 5 号 p. 310-312
発行日: 1985/09/01
公開日: 2011/03/04
ジャーナル フリーPores of three UF membranes : IRIS3038 of Rhône Poulenc, GR61PP of DDS and MPS 3400 of Mitsui Petrochemical Industries, Ltd., and Nuclepore Membrane (Specified pore size : 0.015, μm) as a control were observed through a scanning electron microscope, Hitachi Type S-800 at 50, 000 magnification. Avarage pore size of Nuclepore Membrane was 0.020, μm (200Å). The pore size of UF membranes ranged from 50Å to 150Å.
Pure water flux of each UF membrane, one of the important factors characterizing quality, increased quantitatively with increase in total numbers of the membrane pores.抄録全体を表示PDF形式でダウンロード (1034K) -
大矢 晴彦, 岡田 実, 奥野 浩二, 根岸 洋一, 丹羽 雅裕1985 年 10 巻 5 号 p. 313-322
発行日: 1985/09/01
公開日: 2011/03/04
ジャーナル フリーReverse osmotic concentration of aqueous N, N-dimethylformamide solutions was carried out, using cellulose acetate asymmetric membrane and composite membranes (PEC-1000, NS-100 and FT-30). Separation of N, N-dimethylformamide and flux through the membrane were measured within the following ranges : concentrations ; 1-10 wt %, operating pressure ; 3.29-6.86 MPa.
PEC-1000 membrane shows the best performance among the membranes tested. Its separation for every condition was above 98.5% and was 99.2% at 5wt%, 5MPa. At the same experimental condition, separation of FT-30 BW was 88%, FT-30 SW 73%, NS-100 p1700 94%, NS-100 p3500 96%, cellulose acetate heat treated at 90°C 73%, 87°C 65% and 85°C 60%.
An analysis of data with Spiegler-Kedem's transport model was carried out to obtain membrane constants such as reflection coefficient σ, solute and hydraulic permeabilities ω and Lp, and solute induced compaction coefficients for ω and Lp, βs and βv. Values of σ for composite membrane are 1.0. FT-30 shows the largest value of βv and solute v and cellulose acetate membranes are the smallest.
Energy and membrane area required using best membrane PEC-1000 were calculated to concentrate N, N-dimethylformamide from 0.5w% to 10.5wt% by reverse osmosis. The energy per one kilogram of concentrated N, N-dimethylformamide is proportional to operating pressure and slightly depends on final concentration and concentration polarization and is found 0.3 to 0.7 kWh/kg-DMF. The membrane area is inversely proportional to the operating pressure and found 0.65 [m3/kg-DMF/day] for 5MPa, at no concentration polarization.抄録全体を表示PDF形式でダウンロード (921K)
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