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R. Inzunza,H. Yamaguchi,E. Ikawa,T. Sumiya,Y Fujii,A. Satoh 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper introduces the development of a switch-clamped utility-interactive photovoltaic inverter intended for very large scale photovoltaic (PV) power generation. The switch-clamped inverter proposed is superior to the diode-clamped inverter in terms of converter losses and harmonic distortion, thus a high efficiency of 98.5% was achieved by applying a switch-clamped three-level inverter and latest 6<SUP>th</SUP> generation IGBTs. The adoption of a three level configuration, supported by CAD design tools made possible to achieve a considerable reduction in size. Factory test results are presented to confirm the inverter performance and suitability for large-scaled photovoltaic applications.
Suppression of two tungro viruses in rice by separable traits originating from cultivar Utri Merah.
Encabo, Jaymee R,Cabauatan, Pepito Q,Cabunagan, Rogelio C,Satoh, Kouji,Lee, Jong-Hee,Kwak, Do-Yeon,De Leon, Teresa B,Macalalad, Reena Jesusa A,Kondoh, Hiroaki,Kikuchi, Shoshi,Choi, Il-Ryong APS Press 2009 Molecular plant-microbe interactions Vol.22 No.10
<P>Rice tungro disease (RTD) is caused by Rice tungro spherical virus (RTSV) and Rice tungro bacilliform virus (RTBV) transmitted by green leafhoppers. Rice cv. Utri Merah is highly resistant to RTD. To define the RTD resistance of Utri Merah, near-isogenic lines (NIL, BC(5) or BC(6)) developed from Utri Merah and susceptible cv. Taichung Native 1 (TN1) were evaluated for reactions to RTSV and RTBV. TW16 is an NIL (BC(5)) resistant to RTD. RTBV was able to infect both TN1 and TW16 but the levels of RTBV were usually significantly lower in TW16 than in TN1. Infection of RTSV was confirmed in TN1 by a serological test but not in TW16. However, the global gene-expression pattern in an RTSV-resistant NIL (BC(6)), TW16-69, inoculated with RTSV indicated that RTSV can also infect the resistant NIL. Infection of RTSV in TW16 was later confirmed by reverse-transcription polymerase chain reaction but the level of RTSV was considerably lower in TW16 than in TN1. Examination for virus accumulation in another NIL (BC(6)), TW16-1029, indicated that all plants of TW16-1029 were resistant to RTSV, whereas the resistance to RTBV and symptom severity were segregating among the individual plants of TW16-1029. Collectively, these results suggest that RTD resistance of Utri Merah involves suppression of interacting RTSV and RTBV but the suppression trait for RTSV and for RTBV is inherited separately.</P>
Effect of alloying Copper on the Corrosion Resistance of Stainless Steels in Chloride Media
Ujiro, T.,Satoh, S.,Staehle, R. W.,Smyrl, W. H. 한국부식방식학회 2003 Corrosion Science and Technology Vol.2 No.3
In order to explain the effect of alloying Cu on the corrosion resistance of stainless steels in chloride mediaIbr both ferritic and austenitic stainless steels, the corrosion behavior of Cu-hearing stainless steels was investigated. Alloying Cu showed heneticial effect in an active potential range and harmful effect in a noble potential range. The beneticial effect of alloying Cu was explained by the stability of deposited Cu on an anodic surface. Difference in the effect of alloying Cu between the ferritic and austenitic steels was ascribed by the differences in their corrosion potentials and thc morphology of the deposited Cu.
Watanabe, K.,Tanaka, R.,Takada, K.,Kim, M. J.,Lee, J. S.,Tajima, K.,Isono, T.,Satoh, T. Royal Society of Chemistry 2016 Polymer chemistry Vol.7 No.29
<P>A comprehensive examination of the synthesis of single-chain nanoparticles (SCNPs) from statistical copolymers of n-butyl methacrylate (BMA) and 3-butenyl methacrylate (3BMA), i.e., P(BMA-co-3BMA)s, via the intramolecular olefin metathesis reaction under high dilution conditions is described. The olefin metathesis reaction of P(BMA-co-3BMA) using Grubbs' 2nd generation catalyst in CH2Cl2 efficiently gave the corresponding SCNPs under mild conditions. We achieved the size-controlled synthesis of the SCNPs by adjusting the following factors: (1) the olefin content in the precursor, (2) the molecular weight of the precursor, and (3) the solvent quality of the reaction medium. The hydrodynamic radius and the intrinsic viscosity of the resultant SCNPs were investigated by DLS and viscometric measurements, respectively, which provided further evidence of SCNP formation with controlled diameters. Furthermore, the above-established intramolecular olefin metathesis approach was successfully applied to poly(acrylate), poly(styrene), and poly(ester) precursors, which proved that the present approach could be applied to a wide range of olefin-containing precursors to give SCNPs with various functional groups.</P>
Intermediate Valence Behavior of Yb2Ni12P7 Studied by Using 31P NMR
T Koyama,K Sugiura,K Ueda,T Mito,T Kohara,R Satoh,K Tsuchiya,T Nakano,N Takeda 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
The Yb-based heavy-fermion compound Yb2Ni12P7 with a hexagonal Zr2Fe12P7-type crystalstructure was investigated by using the 31P nuclear magnetic resonance (NMR) technique. Thecomplicated NMR line changes its shape gradually with decreasing temperature, implying the presenceof some Knight shift components. The temperature dependences of the Knight shift and thenuclear spin-lattice relaxation rate 1/T1 suggest the delocalization of 4f electrons.
Measurement of High Energy Neutron Induced Cross Sections for Chromium
S. Sekimoto,T. Utsunomiya,H. Yashima,H. Joto,S. Shibata,K. Ninomiya,D. Satoh,Y. Iwamoto,T. Omoto,R. Nakagaki,N. Takahashi,A. Shinohara,T. Shima,M. Hagiwara,H. Matsumura,K. Nishiizumi,Y. Matsushi,H. Ma 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Reaction cross sections for Cr induced by neutrons at 287 MeV were measured by using ^7Li(p,n) reaction at N0 beam line in the Research Center for Nuclear Physics (RCNP), Osaka University. To estimate quasi-monoenergetic neutron-induced cross sections, the Cr sample was irradiated on the two angles of 0° and 30° for the axis of the primary proton beam. Proton-induced reaction cross sections for Cr at 300 MeV were also measured. The measured cross section data in the ^(nat)Cr(n,x) and ^(nat)Cr(p,x) reactions are compared with the literature values and the JENDL high-energy file. Furthermore, those in the ^(nat)Cr(n,x) reactions are also compared with those in the ^(nat)Cr(p,x) reaction.