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      • Distribution of stress state in the Nankai subduction zone, southwest Japan and a comparison with Japan Trench

        Lin, W.,Byrne, T.B.,Kinoshita, M.,McNeill, L.C.,Chang, C.,Lewis, J.C.,Yamamoto, Y.,Saffer, D.M.,Casey Moore, J.,Wu, H.Y.,Tsuji, T.,Yamada, Y.,Conin, M.,Saito, S.,Ito, T.,Tobin, H.J.,Kimura, G.,Kanagaw Elsevier Scientific Publishing Co 2016 Tectonophysics Vol.692 No.2

        <P>To better understand the distribution of three dimensional stress states in the Nankai subduction zone, southwest Japan, we review various stress-related investigations carried out in the first and second stage expeditions of the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) by the Integrated Ocean Drilling Program (IODP) and compile the stress data. Overall, the maximum principal stress sigma(l) in the shallower levels (<similar to 1 km) is vertical from near the center of forearc basin to near the trench and; the maximum horizontal stress S-Hmax (interpreted to be the intermediate principal stress sigma(2)) is generally parallel to the plate convergence vector. The exception to this generalization occurs along the shelf edge of the Nankai margin where S-Hmax, is along strike rather than parallel to the plate convergence vector. Reorientation of the principal stresses at deeper levels (e.g., >similar to 1 km below seafloor or in underlying accretionary prism) with sigma(1) becoming horizontal is also suggested at all deeper drilling sites. We also make a comparison of the stress state in the hanging wall of the frontal plate-interface between Site C0066 in the Nankai and Site C0019 in the Japan Trench subduction zone drilled after the 2011 Mw 9.0 Tohoku-Oki earthquake. In the Japan Trench, a comparison between stress state before and after the 2011 mega-earthquake shows that the stress changed from compression before the earthquake to extension after the earthquake. As a result of the comparison between the Nankai Trough and Japan Trench, a similar current stress state with trench parallel extension was recognized at both C0006 and C0019 sites. Hypothetically, this may indicate that in Nankai Trough it is still in an early stage of the interseismic cycle of a great earthquake which occurs on the decollement and propagates to the toe (around site C0006). (C) 2015 Elsevier B.V. All rights reserved.</P>

      • KCI등재

        Magnetic Wireless Motion Capturing System and its Application for Jaw Tracking System and 3D Computer Input Device

        S. Yabukami,K. Arai,K.I. Arai,S. Tsuji 한국자기학회 2003 Journal of Magnetics Vol.8 No.1

        We have developed a new tracking system of jaw movement. The system consists of two permanent NdFeB magnets and 32 elements of two-axial fluxgate sensor array. The two magnets are attached to head portion and front tooth. This system does not need any attachments of the head portion or mouth such as clutch or magnetic field sensor except magnets. The proposed system is applicable for five degree of freedom. Position accuracy within 2㎜ was achieved. We developed a 3D computer input device by using the above mentioned technique.

      • SCIESCOPUSKCI등재

        Genealogical Relationship between Pedigree and Microsatellite Information and Analysis of Genetic Structure of a Highly Inbred Japanese Black Cattle Strain

        Sasazaki, S.,Honda, T.,Fukushima, M.,Oyama, K.,Mannen, H.,Mukai, F.,Tsuji, S. Asian Australasian Association of Animal Productio 2004 Animal Bioscience Vol.17 No.10

        Japanese Black cattle of Hyogo prefecture (Tajima strain) are famous for its ability to produce high-quality meat and have been maintained as a closed system for more than 80 years. In order to assess the usefulness of microsatellite markers in closed cattle populations, and evaluate the genetic structure of the Tajima strain, we analyzed representative dams of the Tajima strain comprised of the substrains Nakadoi and Kinosaki. Genetic variability analyses indicated low genetic diversity in the Tajima strain. In addition, a recent genetic bottleneck, which could be accounted for by the high level of inbreeding, was detected in both substrains. In phylogenetic analyses, relationship coefficients and genetic distances between individuals were calculated using pedigree and microsatellite information. Two phylogenetic trees were constructed from microsatellite and pedigree information using the UPGMA method. Both trees illustrated that most individuals were distinguished clearly on the basis of the two substrains, although in the microsatellite tree some individuals appeared in clusters of different substrains. Comparing the two phylogenetic trees revealed good consistency between the microsatellite analysis tree and the pedigree information. The correlation coefficient between genetic distances derived from microsatellite and pedigree information was 0.686 with a high significance level (p<0.001). These results indicated that microsatellite information may provide data substantially equivalent to pedigree information even in unusually inbred herds of cattle, and suggested that microsatellite markers may be useful in revealing genetic structure without accurate or complete pedigree nformation. Japanese Black cattle of Hyogo prefecture (Tajima strain) are famous for its ability to produce high-quality meat and have been maintained as a closed system for more than 80 years. In order to assess the usefulness of microsatellite markers in closed cattle populations, and evaluate the genetic structure of the Tajima strain, we analyzed representative dams of the Tajima strain comprised of the substrains Nakadoi and Kinosaki. Genetic variability analyses indicated low genetic diversity in the Tajima strain. In addition, a recent genetic bottleneck, which could be accounted for by the high level of inbreeding, was detected in both substrains. In phylogenetic analyses, relationship coefficients and genetic distances between individuals were calculated using pedigree and microsatellite information. Two phylogenetic trees were constructed from microsatellite and pedigree information using the UPGMA method. Both trees illustrated that most individuals were distinguished clearly on the basis of the two substrains, although in the microsatellite tree some individuals appeared in clusters of different substrains. Comparing the two phylogenetic trees revealed good consistency between the microsatellite analysis tree and the pedigree information. The correlation coefficient between genetic distances derived from microsatellite and pedigree information was 0.686 with a high significance level (p<0.001). These results indicated that microsatellite information may provide data substantially equivalent to pedigree information even in unusually inbred herds of cattle, and suggested that microsatellite markers may be useful in revealing genetic structure without accurate or complete pedigree information.

      • SCOPUSKCI등재

        학술발표요지

        Kang,Y S,K Hirai,H Sato,A Tsuji 한국약제학회 1987 Journal of Pharmaceutical Investigation Vol.17 No.4

        The receptor-mediated degradation and internalization of insulin have been studied in vitro, while simple pharmacokinetic models have been used for in vivo analysis. However, no pharmacokinetic analysis of insulin has been performed using physiological and biochemical parameters, such as binding to plasma proteins transcapillary permeability, tissue blood flow. blood-to-plasma partition coefficient, and receptor binding. Therefore, we used [^(125)I-Tyr^(A14) human insulin which possesses the same biological activity as native insulin, and analysed the plasma and tissue concentration time-courses using a physiologically-based pharmacokinetic model. The results were as follows: 1. The total body clearance after i.v. injection of tracer insulin and excess amount of unlabelled insulin almost corresponded to the glomerular filtration rate(9.7㎖/min/㎏), and the volume of distribution was in agreement with extracellular space(250 ㎖/㎏). 2. There was no significant difference between the renal clearance of insulin and the glomerular filtration rate, and the total body clearance after i.v. injection of tracer insulin was nearly equal to the sum of the hepatic clearance and the glomerular filtration rate. 3. Under the consideration of these results, physiological parameters, such as the transcapillary permeability and the affinity constant and capacity for the receptor binding were calculated by a nonlinear least squares regression analysis(NONLIN 74). Transcapillary permeability of insulin has a good correlation with that of inulin in each tissue.

      • SCISCIESCOPUS
      • KCI등재

        Bound of aspect ratio of base-isolated buildings considering nonlinear tensile behavior of rubber bearing

        J. Hino,S. Yoshitomi,M. Tsuji,I. Takewaki 국제구조공학회 2008 Structural Engineering and Mechanics, An Int'l Jou Vol.30 No.3

        The purpose of this paper is to propose a simple analysis method of axial deformation of base-isolation rubber bearings in a building subjected to earthquake loading and present its applicability to the analysis of the bound of the aspect ratio of base-isolated buildings. The base shear coefficient is introduced as a key parameter for the bound analysis. The bound of the aspect ratio of base-isolated buildings is analyzed based on the relationship of the following four quantities; (i) ultimate state of the tensile stress of rubber bearings based on a proposed simple recursive analysis for seismic loading, (ii) ultimate state of drift of the base-isolation story for seismic loading, (iii) ultimate state of the axial compressive stress of rubber bearings under dead loads, (iv) prediction of the overturning moment at the base for seismic loading. In particular, a new recursive analysis method of axial deformation of rubber bearings is presented taking into account the nonlinear tensile behavior of rubber bearings and it is shown that the relaxation of the constraint on the ultimate state of the tensile stress of rubber bearings increases the limiting aspect ratio.

      • KCI등재

        Studies on a Wind Turbine Generator System using a Shaft Generator System

        F. Tatsuta,T. Tsuji,N. Emi,S. Nishikata 대한전기학회 2006 Journal of Electrical Engineering & Technology Vol.1 No.2

        - In this paper a new dc-link type wind turbine generator system using a shaft generatorproposed wind turbine generating system is first explained. And the equations expressing the system are derived. Then the steady-state characteristics of the generating system are discussed. We use an experimental system that can simulate the characteristics of a wind turbine in this study, because it is hard to operate an actual wind turbine in a laboratory. In addition, the transient responses of this system are investigated when the velocity of the wind is changed. It is shown that experimental results were very close to the simulated ones, suporting the usefulness of theory.

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