MEMBRANE
Online ISSN : 1884-6440
Print ISSN : 0385-1036
ISSN-L : 0385-1036
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Volume 25, Issue 6
Displaying 1-19 of 19 articles from this issue
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  • Optical resolution by stimuli-responsive hydrogel membranes
    Takashi Aoki
    2000 Volume 25 Issue 6 Pages 270-272
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.270
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    2000 Volume 25 Issue 6 Pages 273-276
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.273
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    2000 Volume 25 Issue 6 Pages 277-279
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.277
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  • Optical Resolution with Molecularly Imprinted Polymeric Membranes
    Masakazu Yoshikawa
    2000 Volume 25 Issue 6 Pages 280-282
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.280
    JOURNAL FREE ACCESS
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    An alternative molecular imprinting technique is applied to the preparation of polymeric membranes for optical resolution. In this technique, the “molecular memory” of the print molecule is introduced in the membrane during the membrane preparation process. It was found that a membrane which contains an oligopeptide residue from a D-amino acid and is imprinted by D-isomer recognizes the D-isomer in preference to L-isomer, and vice versa. As for the membranes from a derivative of natural polymer or non-chiral synthetic polymers, the D-isomer imprinted polymeric membranes recognize D-isomer in preference to L-isomer, and vice versa. Enantioselective electrodialysis is attained with the present membranes reflecting their adsorption selectivity.
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  • [title in Japanese]
    [in Japanese]
    2000 Volume 25 Issue 6 Pages 283-284
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.283
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  • Structure and Molecular Recognition Properties of a Polyallylamine Monolayer Containing Poly (L-alanine) Graft Chains
    Masahiro Higuchi
    2000 Volume 25 Issue 6 Pages 285-286
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.285
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    An amphiphilic polymer, polyallylamine containing poly (L-alanine) hydrophobic graft chains, (PAAg-PAla), was prepared. The amphiphilic polymer was observed to form a monolayer at the air-water interface. The structure of the monolayer was found to be strongly pH dependent in aqueous solution. In acidic conditions, the protonated allylamine moieties of PAAgPAla dissolved readily into the aqueous phase, while the hydrophobic poly (L-alanine) graft chains acted as anchors to keep the monolayer at the interface, resulting in the formation of a collapsed monolayer. In alkaline conditions, the PAAgPAla chains were located entirely at the air-water interface, forming stable and closely-packed uniform monolayers owing to dehydration of the allylamine moieties. In the monolayer, the poly (L-alanine) graft chains self-assembled, owing to the loss of electrostatic repulsions between the neighboring allylamine moieties, yielding β-sheet structure domains at the interface. These active domains interact specifically with aqueous L-alanine rather than with its corresponding Disomer.
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  • [title in Japanese]
    Ryo Yoshida
    2000 Volume 25 Issue 6 Pages 287-289
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.287
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    2000 Volume 25 Issue 6 Pages 290-291
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.290
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  • Self-aggregation of block copolymers and polymer microspheres
    [in Japanese]
    2000 Volume 25 Issue 6 Pages 292-294
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.292
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  • [title in Japanese]
    [in Japanese]
    2000 Volume 25 Issue 6 Pages 295-297
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.295
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    2000 Volume 25 Issue 6 Pages 298-301
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.298
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    2000 Volume 25 Issue 6 Pages 302-304
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.302
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  • [title in Japanese]
    [in Japanese]
    2000 Volume 25 Issue 6 Pages 305-307
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.305
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  • [title in Japanese]
    [in Japanese]
    2000 Volume 25 Issue 6 Pages 308-311
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.308
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  • [title in Japanese]
    [in Japanese]
    2000 Volume 25 Issue 6 Pages 312-315
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.312
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  • Fourier Transform Temperature Wave Analysis for the Thermal Property of Thin Fims
    Junko Morikawa, Toshimasa Hashimoto
    2000 Volume 25 Issue 6 Pages 316-317
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.316
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  • Effects of concentration on permeate flux in cross-flow microfiltration of soy sauce lees for batch-concentration
    Toshio Furukawa, Hironori Kobayashi, Masayuki Fujii, Ken-ichi Kokubo, ...
    2000 Volume 25 Issue 6 Pages 318-323
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.318
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    Cross-flow ultrafiltration and microfiltration have been used to recover soy sauce products from the brewing soy sauce lees for 20 years. To select appropriate membrane module and operating condition for the filtration of soy sauce lees, it is important to analyze the relation between permeate flux decline at varying operating conditions and fouling formation in the batch-concentration-filtration quantitatively. The cross-flow filtration apparatus with 0.006 m2 polysulfone flat-sheet membrane (pore size, 0.2μm) module was used at a constant transmembrane pressure and different cross-flow velocity in both permeate-recycle-and batch-concentration-filtration. Flux decline in the batch-concentration-filtration showed good agreement with the cake-filtration-model proposed in the present study by the Runge-Kutta-Gill method in which the lift velocity at initial concentration was defined as a steady-state flux in the permeate-recycle-filtration and the lift velocity in the batch-concentration-filtration decreased with VRF (volume reduction factor) to the 0.9th power. The lift velocity of soy sauce lees which contain particles of wide range particle size distribution had larger dependence on the particle concentration than that of the suspensions containing latex or yeast shown in the literatures. The cake filtration model applied in the batch-concentration-filtration of soy sauce lees with cross-flow microfiltration membrane was useful to design the process of soy sauce recovery from soy sauce less.
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  • Effects of Proton Pump Inhibitors SCH 28080, SPI-447 and Rabeprazole on the Gastric Phospholipid Flippase Activity
    Magotoshi Morii, Isao Wanajo, Hidehiro Suzuki, Takanari Murata, Noriak ...
    2000 Volume 25 Issue 6 Pages 324-331
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.324
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    The gastric phospholipid flippase has been found in isolated gastric vesicles. Fluorescence analogues of phospholipid and endogenous phospholipids were translocated from the outer to inner leaflet of the lipid bilayer membrane of hog gastric vesicles in an ATP-dependent manner. Previously we found that the flippase activity in gastric vesicles was inhibited by a K+-competitive specific inhibitor of the gastric H+, K+-ATPase, 2-methyl-8- (phenylmethoxy) imidazo [1, 2-a] pyridine-3-acetonitoril (SCH 28080). Here, we studied effects of other gastric proton pump inhibitors on the flippase activity. We found that another K+-competitive specific inhibitor of the gastric H+, K+-ATPase, 3-amino-5-methyl-2- (2-methyl-3-thionyl) imidazo [1, 2-a] thieno [3, 2-c] pyridine (SPI-447) also inhibited the flippase activity. A substituted benzimidazole-related gastric H+, K+-ATPase inhibitor, 2- {[4- (3-methoxypropoxy) -3-methylpyridin-2-ly] methylsulfinyl}-1H-benzimidazole (rabeprazole) decreased the phospholipid flippase activity to 80.6 ± 14.8% (n = 3) of the control level whereas it decreased the proton pump K+-ATPase activity to 5.6 ± 3.4% (n = 3) of the control level. These results indicated a possibility that the phospholipid flippase activity of hog gastric vesicles is part of the H+, K+-ATPase reaction, although further studies are required to confirm this possibility.
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  • The super atomizer; a wet line type continuous device
    Koetsu Takahashi, Tomihisa Naito, Yoshinobu Hattori
    2000 Volume 25 Issue 6 Pages 332-335
    Published: November 01, 2000
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.5360/membrane.25.332
    JOURNAL FREE ACCESS
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    A wet line type continuous device is to conduct high emulsification, dispersion and crushing by making use of phenomena (generation of shock wave, ultrasonic wave and the like due to turbulence) which generate in a nozzle (generator, hereinafter) having a structure unique to “Nanomizer”. One of several generators with different structure is used to achieve each object and thus to realize the most effective super atomization. Emulsification, dispersion and crushing can be conducted with one device, and shortening of production time and cancellation of processes can be realized. Further, since it is possible to conduct a process in a full width reduced pressure in comparison with the other companies, production costs can be remarkably reduced. At a liquid contact portion, one suitable material of monocrystal diamond, sinter diamond, hard metal, ceramic, SUS316 and the like is selected for use of customers to achieve an economization.
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