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91.
92.
Amornrat Lertworasirikul Yuuya Arikawa Tatsuo Kaneko Toshiyuki Kida Mitsuru Akashi 《Journal of polymer science. Part A, Polymer chemistry》2008,46(19):6489-6495
Highly flexible and transparent polylactic acids (PLAs) films were successfully prepared by manipulating their crystallization. The semicrystalline poly(L ‐lactic acid) (L) was blended with a noncrystalline poly(DL ‐lactic acid) (DL) together with diglycerol tetraacetate (DGTA). Optimal DGTA content to plasticize PLAs was about 17%. Addition of DL hindered the crystallization of the films. Tensile strengths of the films having DL content more than 5% were about 10 MPa while the elongations at break were boosted as DL content increased. Films having L/DL ratio of 50/50 showed elongations at break of 270%. Stretch ability and clarity of films containing 15–50% DL were fair although they were subjected to annealing at 60 °C for 1 h. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 6489–6495, 2008 相似文献
93.
Tatsuya Kanno Takahide Oguchi Hirochika Sakuragi Katsumi Tokumaru 《Tetrahedron letters》1980,21(5):467-470
Irradiation of semiconductors (TiO2 and CdS) suspended in organic solvents containing 1,1-diphenylethylene and its derivatives under oxygen afforded the corresponding epoxides and benzophenone. A possible mechanism is discussed. 相似文献
94.
Tamotsu Fujisawa Toshio Sato Tatsuo Kawara Masatoshi Kawashima Hirofumi Shimizu Yasuhiro Ito 《Tetrahedron letters》1980,21(22):2181-2184
Various organocuprates react with β-propiolactones to give β-substituted propionic acids in high yields. 相似文献
95.
Yoshiro Fukuoka Tatsuo Itoh 《International Journal of Infrared and Millimeter Waves》1984,5(6):793-801
A Schottky contact variable phase shifter constructed on either uniformly or periodically doped GaAs substrate is discussed in details. The device can operate at millimeter-wave frequencies with reasonably low attenuation.Work supported by the Office of Naval Research under Contract N00014-79-0053, Joint Service Electronics Program under Grant F49620-82-C-0033, and US Army Research Office under Contract DAAG29-81-K-0053. 相似文献
96.
Daniel Lehmann Marcio Soares Tatsuo Suwa 《Bulletin of the Brazilian Mathematical Society》1995,26(2):183-199
In this article we define and compute an index for a holomorphic vector field on a (possibly singular) subvariety of a complex manifold, provided the subvariety is a local complete intersection. This index reduces to the usual Poincaré-Hopf index in case the subvariety is smooth, and is equal more generally to the index defined in [GSV] and [SS]. 相似文献
97.
A novel synthesis of a series of 2,6-disubstituted 3,5-dicyano-4-thiopyridones 4 by the decomposition of 2,4-disubstituted 5-cyano-2-cyanomethyldihydro-1,3-thiazine-6-thiones 2 , which are synthesized from 4-substituted 5-cyano-1,3-thiazine-2,6-dithiones and enaminonitriles, is described. 相似文献
98.
Tatsuo Suwa 《Mathematische Annalen》1979,240(3):281-286
99.
100.
Described herein is the first clear evidence of the photochemical generation of tetramethyldisilene which can be efficiently trapped by dienes. An intriguing 1,2-photo-induced silyl migration is also reported. 相似文献