http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Umeda, I.,Hayakawa, H.,Kamiya, S.,Tanabe, Y. Asian Australasian Association of Animal Productio 1993 Animal Bioscience Vol.6 No.1
Ten-week-old White Leghorn immature males and females were exposed to four lighting regimens: a constant light (12L : 12D); repeated up and slow down (13 min. up and 1 min. down per day for 13 consecutive days, and repeated on two-week cycle) lighting; repeated slow up and down (1 min. up per day for 13 consecutive days and 13 min. down, and repeated on two-week cycle) lighting; and step-up (14 min. up every second week) lighting. At 15 weeks of age, significantly larger testis and comb weights and significantly higher concentrations of plasma LH and testosterone were observed in the cockerels under the repeated slow up and down lighting regimen than those under the other lighting regimens. At 20 weeks of age, significantly larger oviduct weights and significantly higher concentrations of plasma estradiol were observed in the pullets under the repeated up and slow down, and the step-up lighting regimens than those under the other lighting regimens.
Modeling nonlinear development of Buneman instability with linear dispersion theory
Jain, Neeraj,Umeda, Takayuki,Yoon, Peter H Published jointly by The Institute of Physics and 2011 Plasma physics and controlled fusion Vol.53 No.2
<P>In this paper, spectra in the nonlinear phases of the Buneman instability are described by instantaneous linear dispersion theory. One-dimensional Vlasov simulation of the Buneman instability shows that nonlinear development is characterized by particle trapping in large-amplitude waves. Trapped particles form counter-streaming beam distribution function in velocity space. In addition to the low-frequency Buneman mode, the simulation also shows excitations of high-frequency electron plasma waves as well as wave modes propagating in the direction opposite to the original electron beam. The actual physics of the wave dynamics is very complicated to analyze. However, by employing linear dispersion theory on the basis of instantaneous electron distributions it is possible to relate the generation of waves to the particle distribution. Specifically, it is shown that excitations of various waves are intimately related to the counter-streaming electron beam distribution. The present approach can be a useful diagnostic tool based upon which an intuitive understanding of the complicated nonlinear physics can be attained.</P>
SONEHARA Satoshi,UMEDA Chihiro,Christopher MAYO,SERIGUCHI Mayuko,H?ZAWA Naohide 동국대학교 불교문화연구원 2020 International Journal of Buddhist Thought & Cultur Vol.30 No.1
Representative scholarship on early modern Japan has viewed most religious organizations as submitting to the authority of the military government, which treated them as tools of the Tokugawa regime’s ideologically-based rule. However, in recent years, empirical research in many areas has begun to overturn this perception, and it has become clear that unexpected religious transformations were occurring independent of state ideologies. This essay highlights ways in which religion functioned as a force for cohesion in society ––not as a tool monopolized by the powerful elite, but rather as an institution that was influenced by people from various strata in society. The primary aim of this research is to reexamine relationships among the state, religious organizations, and communities in the context of national integration, in order to bring to the fore particular examples of how these relationships were changing. Secondarily, in addition to deepening our understanding of existing lines of inquiry, the five authors attempt to stake out some new directions in scholarship, particularly in deepening our understanding of how a multiplicity of voices required negotiations and adjustments to make the system fit reality in some of the major institutions that we associate with Japan’s early modernity.
A Systematic study on the growth of GaN single crystals using the Na-based fluxmethod
M. Kawahara,Y. Yamada,H. Umeda,M. Morishita,F. Kawamura,M. Yoshimura,Y. Mori,T. Sasaki 한양대학교 세라믹연구소 2005 Journal of Ceramic Processing Research Vol.6 No.2
To obtain bulk gallium nitride (GaN) single crystals applicable as the substrate for GaN homoepitaxial growth, we have adopted the Na flux method with some modifications. Assuming that a key reaction of this method is nitrogen dissolution into a flux, we considered both the gas composition and the liquid phase composition. The use of ammonia gas had effects in lowering the threshold pressure for the GaN growth compared with the nitrogen gas which had been used in the original Na flux method. The composition change from pure Na to a mixture of Ca and Na for the flux also brought some favorable effects such as lowering the threshold pressure, and an improvement in the crystal transparency. Finally, the liquid phase epitaxy (LPE) technique along with the Na-based flux method led to the growth of bulk GaN single crystals with much lower dislocation densities than the seed crystals.