Zobrazeno 1 - 10
of 163
pro vyhledávání: '"Yasaku Wada"'
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 23:583-595
Two breaks are observed in the temperature dependence of both specific volume and logarithmic retardation time in isotactic polypropylene, indicating two glass transitions. In correspondence with two transitions, two loss peaks are found in isochrona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d604a69ef8c7c1b3b90bedbe329259ff
https://doi.org/10.1002/polc.5070230214
https://doi.org/10.1002/polc.5070230214
Autor:
Kunio Arisawa, Ken-Ichi Shida, Kenji Tsuge, Yasuko Hotta, Toshio Nishi, Yoshiyuki Ohzawa, Reinosuke Hayakawa, Yasaku Wada
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 15:101-108
Mechanical and dielectric relaxations in crystalline phase (crystalline relaxation), glassy phase (local mode relaxation), and paracrystalline phase (paracrystalline relaxation) are interpreted in terms of torsional motion of chains in respective pha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6bf641146beea98cc824d78dfdc1c31
https://doi.org/10.1002/polc.5070150110
https://doi.org/10.1002/polc.5070150110
Publikováno v:
Biopolymers. 18:25-34
The complex dielectric constant of collagen in aqueous solutions (polymer concentration, Cp = 0.02–0.2%) was measured at 10°C in the frequency range from 3 Hz to 30 kHz. The loss peak for Cp = 0.02% is located at 90 Hz and the dielectric relaxatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5d9f98466136f7e4cdbb325bb844255
https://doi.org/10.1002/bip.1979.360180104
https://doi.org/10.1002/bip.1979.360180104
Publikováno v:
Japanese Journal of Applied Physics. 14:2039-2052
Difficulties in measuring the contplex dielectric constant of a highly conductive material such as aqueous polyelectrolytes including biopolymers arise from (l) electrode polarization effect and (2) d.c. conductance of the specimen which is very much
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b87e30a20108bc01b52fbb1af00e7c86
https://doi.org/10.1143/jjap.14.2039
https://doi.org/10.1143/jjap.14.2039
Publikováno v:
Polymer Journal. 19:681-686
The second-order dielectric constant e2 of a copolymer of vinylidene fluoride and trifluoroethylene (52:48 in mole) was measured by means of the difference frequency method. e2 is related to spontaneous polarization Ps and the linear dielectric const
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e3bb97cd58e5283ba3e5104ba142120
https://doi.org/10.1295/polymj.19.681
https://doi.org/10.1295/polymj.19.681
Autor:
Yasaku Wada, Reinosuke Hayakawa
Publikováno v:
Japanese Journal of Applied Physics. 15:2041-2057
This article surveys theoretical and experimental work on piezo- and pyroelectricity of polymers in the 1970's with special emphasis on the origins of these properties. The origins are classified into three types: (A) internal strain (§2), (B) strai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77c524176912972ef6380fed50918c8a
https://doi.org/10.1143/jjap.15.2041
https://doi.org/10.1143/jjap.15.2041
Publikováno v:
Journal of Applied Physics. 62:3339-3342
Second‐ and third‐order dielectric constant e2 and e3 of three copolymers of vinylidene fluoride and trifluoroethylene were measured over a temperature range from 20 °C to higher than the ferroelectric‐to‐paraelectric phase transition temper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16cbf372d1adc77e22328d6000c0ee7e
https://doi.org/10.1063/1.339294
https://doi.org/10.1063/1.339294
Autor:
Yasaku Wada, Hajime Tanaka
Publikováno v:
Physical Review A. 32:512-524
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9aab98b799d2579a35cd7ef5a94a2d2
https://doi.org/10.1103/physreva.32.512
https://doi.org/10.1103/physreva.32.512
Autor:
Yasaku Wada
Publikováno v:
Kobunshi. 24:699-702
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f847bed1eb259106b7b074288e04425
https://doi.org/10.1295/kobunshi.24.699
https://doi.org/10.1295/kobunshi.24.699
Autor:
Haruhiko Nakajima, Takayuki Kinoshita, Osamu Shimazaki, Yasaku Wada, Hajime Tanaka, Kazushi Yamanaka
Publikováno v:
Japanese Journal of Applied Physics. 18:1379-1385
A new instrument has been developed for rapid continuous recording of temporal changes in ultrasonic velocity and attenuation constant in a material. A set of data of changes in velocity and attenuation is obtained within the interval of one echo tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b08072b282bfd24f92f14b19bf8862fb
https://doi.org/10.1143/jjap.18.1379
https://doi.org/10.1143/jjap.18.1379