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Mizutani, K.,Niiyama, M.,Nakano, T.,Yosoi, M.,Nozawa, Y.,Ahn, D. S.,Ahn, J. K.,Chang, W. C.,Chen, J. Y.,Daté,, S.,Gohn, W.,Hamano, H.,Hashimoto, T.,Hicks, K.,Hiraiwa, T.,Hotta, T.,Hwang, S. H.,I American Physical Society 2017 Physical Review C Vol.96 No.6
<P>Differential cross sections at t = t(min) and decay asymmetries for the gamma p -> phi p reaction have been measured using linearly polarized photons in the range 1.5 to 2.9 GeV. These cross sections were used to determine the Pomeron strength factor. The cross sections and decay asymmetries are consistently described by the t-channel Pomeron and pseudoscalar exchange model in the E-gamma region above 2.37 GeV. In the lower energy region, an excess over the model prediction is observed in the energy dependence of the differential cross sections at t = t(min). This observation suggests that additional processes or interference effects between Pomeron exchange and other processes appear near the threshold region.</P>
Novel Field-induced Quantum Phase Transition of the Kagome-lattice Antiferromagnet
Tˆoru Sakai,Hiroki Nakano 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
The magnetization process of the S = 1/2 kagome-lattice quantum antiferromagnet is investigatedusing the numerical exact diagonalization up to 36-site clusters. Our previous finite-size scalinganalysis with rhombic clusters indicated the “magnetization ramp” as a novel field-induced quantumphase transition at 1/3 the saturation magnetization. As another possible exotic behavior, we focuson the feature of the magnetization curve at 2/3 the saturation. The critical exponent analysisindicates that a different singular behavior occurs at the 2/3 magnetization.
TT Virus Infection Among Blood Donors and Patients with non-B, Non-C Liver Diseases in Korea
T, Nakano,Park, Young-Min,Mizokami,Choi, Jong-Young,E, Orito,T, Ohno,T, Kato,Y, Kondo,Y, Tanaka,H, Kato,T, Kato,Kim, Boo-Sung 가톨릭대학교 2000 Bulletin of The Catholic Research Institutes of Me Vol.28 No.-
Background/Aims : A novel virus, designated the TT virus (TTV), was isolated from the serum of a patient with posttransfusion hepatitis of unknown etiology, in Japan. Subsequently, TTV was suggested to be a causative agent in a proportion of cases with cryptogenic hepatitis in Japan. This study aimed to elucidate the significance of TTV infection in cases with cryptogenic liver disease in Korea, a neighbor of Japan. Methods : The prevalence of TTV infection was studied in 120 patients with liver diseases, including 85 patients diagnosed as having non-B, non-C liver diseases. As controls, 220 blood donors were also examined. TTV DNA was detected by polymerase chain reaction, and the sequence was analyzed by phylogenetic analysis. Results : Fourteen (14.0%) of 100 accepted blood donors, 23 (19.2%) of 120 rejected blood donors, and 15 (17.6%) of 85 patients with non-B, non-C liver diseases were positive for TTV DNA. The prevalences of TTV infection among these groups were not significantly different. Phylogenetic analysis suggested the existence of four major genotypes of TTV The proportions of each genotype among patients with non-B, non-C liver diseases were not different from those among accepted blood donors. Conclusions : TTV exists in Korea, but the prevalence among patients with non-B, non-C liver diseases was almost the same as that among blood donors. TTV may not be the main causative agent of cryptogenic liver disease in Korea. The relationship between non-B, non-C liver diseases and TTV genotype remains unclear, although TTV can be classified into four genotypes. (The Journal of Hepatology 30(3):389-93, 1999)
Highlights from Laser-Electron Photon Project at Spring-8
T. Nakano 한국물리학회 2003 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.43 No.I
The photon beam at SPring-8 is produced by backward-Compton scattering of linearly polarized laser photons from 8 GeV electrons. Polarization of the photon beam is about 95 % at the maximum energy. In this report we overview the new beamline and the detector system. Some highlights from the rst physics run with this high quality beam are presented.
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.
T. NAKANO,S. MOMOZONO,S. AIZAWA 한국트라이볼로지학회 2002 한국트라이볼로지학회 학술대회 Vol.2002 No.10
New lubrication mechanism for nanomachine is proposed. This mechanism utilizes the effect of diffusive double layer observed in hydrophobic colloidal solution. Basic idea of the theory is inspired by the research for possible mechanism of bacterial flagellar motor. In this study, formulation of this mechanism is achieved and numerical calculation is performed. It is shown that this mechanism can produce enough load capacitance. Furthermore not only load capacitance to sustain driving force of flagellar motor
Electrodeposited Fe-Co Films Prepared from a Citric-acid-based Plating Bath
T. Yanai,H. Uto,T. Shimokawa,M. Nakano,H. Fukunaga,K. Suzuki 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
Electrodeposited Fe-Co films are commonly prepared in a boric-acid-based bath. In this research,we applied citric acid instead of boric acid for the plating of Fe-Co films because boron in the wastebath is restricted by environmental-protection regulations in Japan. We evaluated the effect ofcitric acid on the magnetic and structural properties of the films. The saturation magnetization ofthe Fe-Co films slightly increased while the Fe content in the Fe-Co films decreased with increasingcitric acid concentration. The lowest coercivity value of 240 A/m was obtained at a citric acidconcentration of 100 g/L. The plating bath with this citric acid concentration enabled us to obtainFe-Co films with high saturation magnetizations and smooth surface morphologies.
T. Oka,M. Furusawa,K. Sudo,L. Dadiel,N. Sakai,H. Seki,M. Miryala,M. Murakami,T. Nakano,M. Ooizumi,K. Yokoyama,M. Tsujimura 한국초전도저온공학회 2021 초전도와 저온공학 Vol.23 No.3
Nickel (Ni) is a kind of the rare earth resources. Since Ni-containing waste is drained after several plating operations in the factories, the effective recycling technique has been expected to be introduced. An actual magnetic separation technique using HTS bulk magnet generating the strong magnetic field has succeeded in collecting the paramagnetic slurry containing Ni-sulphate coarse crystals which were fabricated from the Ni-plating waste. The Ni compound in the collected slurry was identified as NiSO4/6H2O, showing slight differences in the particle size and magnetic susceptibility between the samples attracted and not-attract to the magnetic pole. This preferential extraction suggests us a novel recycling method of Ni resource because the compound is capable of recycling back to the plating processes as a raw material.
Electrodeposited Fe-Ni Films Prepared from a Tartaric-acid-based Bath
T. Shimokawa,T. Yanai,K. Takahashi,M. Nakano,H. Fukunaga,K. Suzuki 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
Recently, we reported a citric-acid-based plating bath is one of the hopeful plating baths forobtaining Fe-Ni films with good soft magnetic properties. In this report, hydroxylic acid of tartaricacid, which belongs to the same acid group at citric acid, was applied to prepare the films, and theeffects of tartaric acid on the magnetic and the structural properties were investigated. Although theoverall trend of the effects obtained for tartaric acid resembles our previous results for the citricacid-based bath, the cathode efficiency for the tartaric-acid-based bath shows a slightly highervalue as compared with that for the citric-acid-based bath. From these results, we conclude thatthe tartaric-acid-based bath is also an environmentally friendly plating bath.
Oka, T.,Furusawa, M.,Sudo, K.,Dadiel, L.,Sakai, N.,Seki, H.,Miryala, M.,Murakami, M.,Nakano, T.,Ooizumi, M.,Yokoyama, K.,Tsujimura, M. The Korean Society of Superconductivity and Cryoge 2021 한국초전도저온공학회논문지 Vol.23 No.3
Nickel (Ni) is a kind of the rare earth resources. Since Ni-containing waste is drained after several plating operations in the factories, the effective recycling technique has been expected to be introduced. An actual magnetic separation technique using HTS bulk magnet generating the strong magnetic field has succeeded in collecting the paramagnetic slurry containing Ni-sulphate coarse crystals which were fabricated from the Ni-plating waste. The Ni compound in the collected slurry was identified as NiSO<sub>4</sub>/6H<sub>2</sub>O, showing slight differences in the particle size and magnetic susceptibility between the samples attracted and not-attract to the magnetic pole. This preferential extraction suggests us a novel recycling method of Ni resource because the compound is capable of recycling back to the plating processes as a raw material.