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A novel InP/InGaAsP buried heterostructure laser diode on p-type InP substrate has been developed. The laser has achieved a threshold current as low as 20 mA DC with high power output of 50 mW under CW operation in the fundamental transverse mode. 相似文献
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955.
Johnson Ronald C.; Suzuki Nancy S.; Olds William K. 《Canadian Metallurgical Quarterly》1964,69(2):233
An analysis of previous studies suggested that certain letters and letter combinations occur more often than would be expected by chance in affectively pleasant words, while others are overrepresented in unpleasant words. On the basis of data from these prior investigations, 14 pairs of artificial words were constructed and randomly paired with 7 good and 7 bad adjectives. College, deaf high school, and hearing high school Ss were presented with the task of matching each of the English adjectives with the correct member of the artificial word pair presented with it. The college and hearing high school Ss matched as predicted significantly more often than chance expectancy, which deaf Ss did not. The results are interpreted as supporting the existence of phonetic symbolism of word sounds. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
956.
This paper summarizes our research on newly-developed multifilamentary V3Ga and Nb3Sn compound superconductors, including their design, processing, and characteristics such as mechanical and superconducting properties, and coil performance. 相似文献
957.
The emissivity of chlorinated polyethylene containing varying amounts of combined chlorine has been investigated. It was found that the emissivity of these compounds increases significantly with increase in chlorination. 相似文献
958.
Tadashi Inoue Takeo Onchi Hiroaki Kôyama Hiroshige Suzuki 《Journal of Nuclear Materials》1978,74(1):114-122
The paper describes radiation effects on 84C pellets used as control rod elements in the Enrico Fermi Fast Breeder Reactor. Pellet swelling (Δ) caused by irradiation was less than 1% in which crystal lattice swelling was less than 20%. Many microcracks, a main cause of pellet swelling, appeared in the irradiated pellets. The production of microcracks was related to graphite precipitation in the pellets before irradiation. Open pores which did not exist in the unirradiated pellets were formed in the irradiated ones. In a unit cell of B4C, the α-axis elongated by 0.025 Å and the shrank by 0.07 Å by irradiation. Moreover, we found three recovery stages which were from room temperature to 400°C, from 400 to 750°C and from 850 to 1100°C. The recovery mechanisms in the irradiated pellets are discussed in terms of the helium behavior. 相似文献
959.
Tetsuro Suzuki 《Metallurgical and Materials Transactions A》1981,12(5):709-714
The behavior of the transverse lattice wave connected with the nucleation process of martensite is studied, taking into account the anharmonicity, by use of one-dimensional model for the crystal. The key factor which determines the behavior of the transverse lattice waves according to the model is its amplitudeA with respect to the critical amplitudeA c. As far asA < A c, the presence of the transverse lattice wave does not lead to the initiation of the martensite. Depending on the variation ofA andA c with temperature, the model suggests two alternative processes for the initiation of the martensitic transformation. 1) In case the variation ofA c with temperature is larger than the variation ofA with temperature, the transverse lattice wave develops into the stable nuclei of the martensite, as soon asA c becomes smaller thanA with decrease of temperature. 2) In case the variation ofA with temperature is larger than the variation ofA c with temperature, the transverse lattice wave represents the heterophase fluctuation whenA « A c. The stable martensite is formed with the reduction ofA as temperature is reduced. The presently available experimental data suggest the process 1) as the nucleation mechanism of the martensite. The prominent role of the interface energy between the martensite and the austenite in determining both the structure of the martensite and the dispersion relationship of the transverse lattice wave in the austenite is pointed out. 相似文献
960.