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101.
Crystallographic quality and the lattice constant of ZnSe crystals grown from Te/ Se solutions by the temperature gradient
solution growth method were evaluated by using a high resolution x-ray diffractometer. The full width at half maximum of the
x-ray rocking curve was 5.7 sec, a value almost equivalent to that of GaAs. The distribution of crystallographic properties
along the growth direction was nearly the same excepting just on the heat-sink. The accurate lattice constant of the ZnSe
crystal measured by this system was 5.6700 ± 0.000025 A. 相似文献
102.
The authors have proposed a method of reducing the energy consumption in residential buildings by providing household members with information on energy consumptions in their own houses. An on-line interactive “energy-consumption information system” that displays power consumptions of, at most, 18 different appliances, power and city-gas consumption of the whole house and room temperature, for the purpose of motivating energy-saving activities has been constructed and the effectiveness of the system investigated by installing it in 10 residential buildings. The experiment showed that energy-saving consciousness was raised and energy consumption was in fact reduced by the energy-saving activities of the household members. In this paper, the system is described in detail and the effectiveness of reducing energy-consumption of the whole house and for space heating will be discussed. Also the energy-saving activities in a certain household are shown by using load duration curves. 相似文献
103.
Grigson Patricia S.; Shimura Tsuyoshi; Norgren Ralph 《Canadian Metallurgical Quarterly》1997,111(1):180
Bilateral electrolytic lesions of the nucleus of the solitary tract (NST) or ibotenic acid lesions of the pontine parabrachial nuclei (PBN) failed to disrupt retention of a preoperatively acquired conditioned taste aversion (CTA) to 0.3 M alanine. For both sham- and NST-lesioned rats, the CTA persisted following 3 nonreinforced conditioned stimulus (CS) presentations. For PBN-lesioned rats, retention was more labile. The preoperatively acquired CTA was extinguished by the 3rd nonreinforced CS exposure. When assessed postoperatively using a novel CS, NST-lesioned rats acquired a new CTA, although they were rendered anosmic with zinc sulfate (P. S. Grigson et al, see record 199707487-016). Rats with PBN lesions, however, failed to acquire a 2nd CTA postoperatively. Thus, the PBN is essential for the acquisition of a CTA, but neither of the brainstem gustatory nuclei need be intact for the retention of a preoperatively acquired CTA. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
104.
Ken'ichi Harada Yasuhide Kobayashi Tsuyoshi Okita 《Electrical Engineering in Japan》2003,145(3):61-68
This paper proposes a system identification method for linear systems with time delay and unknown order. We hypothesize a number of candidate models, which have different order, because system order is unknown. In each model, we estimate the model parameters based on the maximum likelihood method by using nonlinear optimization technique. Then both local optimization technique and global search method are used because the estimated parameters may fall into a local minimum. After all candidate model's parameters are estimated, one model is selected among these models to estimate the system order by using a posteriori probability based on Bayes's theorem. Finally, the validity of the proposed method is demonstrated by numerical examples. © 2003 Wiley Periodicals, Inc. Electr Eng Jpn, 145(3): 61–68, 2003; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10166 相似文献
105.
Tsuyoshi Nishi Akinori Itoh Masami Numata Yasuo Arai 《Journal of Nuclear Materials》2008,377(3):467-469
The heat capacities of NpN and AmN were determined with the drop calorimetry method. The NpN and AmN samples were prepared by the carbothermic reduction of the respective dioxides. The heat capacity of NpN obtained was in good agreement with the reported values in the temperature range from 334 to 1067 K, which was close to those of UN and PuN. The heat capacity of AmN was obtained experimentally for the first time, which was slightly smaller than those of UN, NpN and PuN in the temperature range from 354 to 1071 K. 相似文献
106.
Kiichiro Kamata Tadashi Nakajima Tsuyoshi Hayashi Tetsurō Nakamura 《Materials Research Bulletin》1978,13(1):49-54
The perovskite phase LaMnO3±λ was revealed to have nonstoichiometry ranging from 2.947 to 3.079 under the oxygen partial pressure below logPO2(atm)=0 at 1200°C. The presence of the reductive perovskite phase LaMnO3?λ with a more distorted structure than the monoclinic one was ascertained. The free energy change of oxidative reaction in MnO+1/2La2O3+1/4O2=LaMnO3 was determined to be ΔG°=19500±200cal at 1200°C. D.C. electrical conductivities of LaMnO3±λ perovskites at room temperature became higher with increasing oxygen content. Magnetic measurements were also made. 相似文献
107.
Naotsugu Itoh Takuya Machida Wei-Chun Xu Hisamichi Kimura Tsuyoshi Masumoto 《Catalysis Today》1995,25(3-4):241-247
Amorphous PdxSi1-x(x=0.8,0.825,0.85) in the form of ribbon was prepared by a single-roller melt spinning technique to examine hydrogen permeability and catalytic activity for dehydrogenation. As a result, it was found that the amorphous specimens had higher tenacity and higher permeability of hydrogen than its crystallized form. Also, the surface of the amorphous specimen showed a catalytic activity for dehydrogenation of cyclohexane, while no activity was observed in the untreated. Taking advantage of both hydrogen permeability and catalytic activity, the amorphous PdxSi1-x would be expected to be a candidate for a catalytic membrane. 相似文献
108.
Grigson Patricia Sue; Reilly Steve; Shimura Tsuyoshi; Norgren Ralph 《Canadian Metallurgical Quarterly》1998,112(1):160
Rats with extensive ibotenic acid lesions centered in the gustatory zone of the pontine parabrachial nucleus (PBN) failed to acquire a conditioned taste aversion (CTA) induced by lithium chloride (LiCl) toxicosis (Experiments 1 and 4). This deficit cannot be explained as an inability to either perceive or process gustatory information because lesioned rats that failed to acquire a CTA readily acquired a conditioned flavor preference (Experiment 2). Similarly, the CTA deficit cannot be attributed to an inability to experience or process visceral input because PBN-lesioned rats that failed to acquire a CTA successfully learned an aversion to a trigeminal stimulus, capsaicin, when paired with LiCl-induced illness (Experiment 3). This pattern of results supports the view that cell bodies within the PBN are essential for the associative processes that govern CTA learning. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
109.
An analysis of the stress intensity factor is made for a crack approaching the welding line from the normal direction in an infinite plate.The equations proposed by one of the authors and others were employed in the analysis as the distribution function of the residual stress caused by welding. The effects of crack location and the length on the stress intensity factor were closely examined.For the constant crack length, the maximum stress intensity factor does not occur when the crack center coincides with the welding line, but does when the crack front approximately reaches the welding line.For a better understanding of the behavior of a crack approaching the weldment, analysis was also carried out for a crack with various lengths but constant eccentricity.
Résumé On a procédé à une analyse du facteur d'intensité de contrainte qui correspond à une fissure qui se rapproche d'un dépôt de soudure normalement à la ligne de fusion et dans une tôle infinie.On a utilisé les équations élaborées par un des auteurs ainsi que par d'autres chercheurs pour décrire la distribution des contraintes résiduelles provoquées par le soudage. On a également examiné de près les effets sur le facteur d'intensité de contrainte de l'emplacement de la fissure et de sa longueur.A longueur de fissure constante, le facteur d'intensité de contrainte ne passe pas par sa valeur maximum lorsque le centre de la fissure coïncide avec l'axe de la soudure, mais bien lorsque l'extrémité de la fissure est sur le point d'atteindre cet axe.Pour mieux comprendre le comportement d'une fissure qui se rapproche d'une soudure, on a également analysé le cas de fissures de diverses longueurs, mais à excentricité constante.相似文献
110.
Hakoshima Toshio; Toda Shoji; Sugio Shigetoshi; Tomita Ken-ichi; Nishikawa Satoshi; Morioka Hiroshi; Fuchimura Kayoko; Kimura Tsuyoshi; Uesugi Sei-ichi; Ohtsuka Eiko; Ikehara Morio 《Protein engineering, design & selection : PEDS》1988,2(1):55-61
Recognition by ribonuclease T1 of guanine bases via multidentatehydrogen bonding and stacking interactions appears to be mediatedmainly by a short peptide segment formed by one stretch of aheptapeptide, Tyr42-Asn43-Asn44-Tyr45-Gly46-Gly47-Phe48. Thesegment displays a unique folding of the polypeptide chainconsistingof a reverse turn, Asn44-Tyr45-Glu46-Gly47, stabilized by ahydrogen-bond network involving the side chain of Asn44, themain-chain atoms of Asn44, Gly47 and Phe48 and one water molecule.The segment is connected to the C terminus of a ß-strandand expands into a loop region between Asn43 and Ser54. Lowvalues for the crystallographic thermal parameters of the segmentindicate that the structure has a rigidity comparable to thatof a ß-pleated sheet. Replacement of Asn44 with alanineleads to a far lower enzymatic activity and demonstrates thatthe side chain of Asn44 plays a key role in polypeptide foldingin addition to a role in maintaining the segment structure.Substitution of Asn43 by alanine to remove a weak hydrogen bondto the guanine base destabilized the transition state of thecomplex by 6.3 kJ/mol at 37°C. In contrast, mutation ofGlu46 to alanine to remove a strong hydrogen bond to the guaninebase caused a destabilization of the complex by 14.0 kJ/mol.A double-mutant enzyme with substitutions of Asn43 by a histidineand Asn44 by an aspartic acid, to reproduce the natural substitutionsfound in ribonuclease Ms, showed an activity and base specificitysimilar to that of the wild-type ribonuclease Ms. The segmenttherefore appears to be well conserved in several fungal ribonucleases. 相似文献