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11.
Masayasu Tasaka Satoshi Tamura Naoto Takemura Keisuke Morimoto 《Journal of membrane science》1982,12(2):169-182
Electroosmosis and streaming potential measurements were carried out across charged membranes made of collodion and sulfonated polystyrene. Experiments were confined to the range where linear flux/force relationships hold. Saxén's relationship holds between electroosmosis and streaming potential; for porous charged membranes these exhibit an approximate inverse proportionality to ionic mobility at the limit of low electrolyte concentration. Both tend towards zero at the limit of high electrolyte concentration. 相似文献
12.
13.
N. Takeyasu T. Tanaka S. Kawata 《Applied Physics A: Materials Science & Processing》2008,90(2):205-209
Three-dimensional silver/polymer conjugated microstructures were fabricated by site-selective metal deposition on photopolymer
structures in the sub-micrometer scale. Photopolymerizable resins with and without an amide group were independently prepared,
and a three-dimensional polymer structure was fabricated with those resins by means of the two-photon-induced photopolymerization
technique to confine the photopolymerization to a sub-micrometer volume. Silver was selectively deposited on the surface of
the amide-containing polymer parts by electroless plating. This method can provide 3D arbitrary silver/polymer composite microstructures
with sub-micrometer resolution.
PACS 81.07-b; 81.16-c; 81.07.Pr 相似文献
14.
15.
Karl A. Scheidt Akihiro Tasaka Thomas D. Bannister Michael D. Wendt William R. Roush 《Angewandte Chemie (International ed. in English)》1999,38(11):1652-1655
A careful orchestration of protecting groups is an essential requirement for the total synthesis of the macrolide antibiotic bafilomycin A1 ( 1 ). Key steps were the Suzuki cross-coupling reaction of two advanced, suitably protected intermediates prior to closure of the macrocycle, as well as a highly stereoselective methyl ketone aldol reaction. 相似文献
16.
Yao-Yu Cao Xian-Zi Dong Nobuyuki Takeyasu Takuo Tanaka Zhen-Sheng Zhao Xuan-Ming Duan Satoshi Kawata 《Applied Physics A: Materials Science & Processing》2009,96(2):453-458
The morphology and size dependence of silver microstructures in a novel microfabrication process, fatty salts-assisted multiphoton
photoreduction (MPR), were investigated by using the fatty salts with different carbon chain lengths (C
n
: n=4,5,7,9) under varied powers and irradiation times of a femtosecond near-infrared laser with the wavelength of 800 nm. Not
only the feature size of the silver structures was reduced but also the surface smoothness was improved by increasing the
chain length of the fatty salts. The highest resolution of a silver line was obtained to be 285 nm, which exceeded the diffraction
limit. The fatty salts-assisted MPR microfabrication approach would provide an efficient protocol for fabricating metallic
micro/nanostructures with fine morphology and size and could play an important role in the fabrication of the metallic micro/nanostructures
for applications in photonics and electronics as well as in sensors. 相似文献
17.
18.
Shigeyuki Tasaka Hirokazu Tanabe Yoshiyuki Sasaki Toshiki Machida Mayumi Iino Akira Kiue Seiji Naito Michihiko Kuwano 《Journal of heterocyclic chemistry》1997,34(6):1763-1767
We have investigated 3-substituted-2-phenylimidazo[2,1-b]benzothiazole derivatives and herein we have discussed their pharmaceutical activities. We found that some 2-phenyl-5,6,7,8-tetrahydroimidazo[2,1-b]-benzothiazoles could overcome multidrug resistance for tumor cells. Among them, 2-phenyl-3-(N-methyl-3-piperidyl)carbonylammomiinomemyl-5,6,7,8-tetrahydVoimidazo[2,1-b]benzothiazole [N276-12] demonstrated the most potent activity for overcoming multidrug resistance. 相似文献
19.
Thermoosmosis through anion-exchange membranes was measured for 10-3 to 2 mol/kg of aqueous KCl, LiCl, and NH4Cl and for 10-3 to 3 x 10-1 mol/kg of aqueous KIO3 and K2SO4. For all electrolytes used the direction of thermoosmosis was from the cold side to the hot side over the whole range of concentrations. For KCl and LiCl the experimental results were analyzed with an extension of a previously published theory, using additional data for transport numbers of ions in membranes and for electroosmosis. The agreement between theory and experiment is satisfactory. The absolute value of thermoosmosis for KIO3 is larger than that for other electrolytes because the pore volume fraction of the membrane for KIO3 is larger than that for the other electrolytes. 相似文献
20.