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Configuration Dependence of Toroidal Current in Heliotron J
gen Motojima,F. Sano,H. Yabutani,H. Okada,H. Nakamura,H. Arimoto,H. Kitagawa,H. Yamazaki,K. Kondo,K. Nagasaki,K. Hanatani,K.Y. Watanabe,M. Kaneko,M. Uno,S. Fujikawa,S. Watanabe,S. Yamamoto,S. Kobayash 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
A change of toroidal current by controlling the magnetic configuration has been observed in Heliotron J. The effect of the magnetic configuration on the neoclassical bootstrap current has been theoretically investigated for Heliotron J. It is found that the bumpy field component (B04) plays an important role in changing both the value and the direction of the bootstrap current in Heliotron J. The bootstrap current density is reversed at the small minor radius first, and then the net bootstrap current changes its direction from a positive value to a negative value as B04 decreases.
소아 기관지 천식 환자에 있어서 객담내 Creola body에 관한 연구
김성원,Sankei Nishima,Shinji Motojima,Sohei Makino 대한천식알레르기학회 1990 천식 및 알레르기 Vol.10 No.3
The Creola Body(CrB), a hallmark of asthma, is a clump of desquamated bronchial epithelial cells. It occurs in sputum of bronchial asthma patient especially during asthmatic attack. To determine the clinical significance of Creola body in childhood bronchial asthma, We analyz ed 45 cases of hospitalized bronchial asthma patient sputa and 50 cases of bronchial asthma patient who visited out-patient clinic due to mild asthma attack, and measured pulmonary function respectively. The result were as follows .' 1. There was significant relationship between eosinophil score in sputum and CrB detection rate in sputum 2. The Creola body was detected in 29 cases of in-patient(64.6%) and 10 cases of out-patient group(20%) (P<0.001) 3. There was significantly low level of %FEV, and %V50 at the first admission day of CrB(+) g IOUp. 4. In in-patient, there was significant difference of Downes severity score between CrB(+) group and CrB( ) group at the first day of admission. 5. In in-patient, ther was also significant difference of remission duration of bronchial asthma attack between the two groups. 6. The re was significant relationship between CrB score and serum total IgE in mild to moderate severity cases. We conclued that creola body in sputum was essential for pediatric bronchial asthma.
hajime Arimoto,F. Sano,G. Motojima,H. Yamazaki,H. Nakamura,H. Yabutani,H. Kitagawa,H. Okada,J. Arakawa,K. Kondo,K. Ohashi,K. Nagasaki,M. Yamada,M. Uno,M. Kikutake,M. Kaneko,N. Watanabe,N. Nishino,N. S 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
The measurement of D, CII and CIII line spectral profiles and the CD band spectrum from the vicinity of a test limiter surface is performed in Heliotron J test limiter experiments. With deep insertion of the limiter, there is a localized intense region of the D, CII and CIII line intensity in the limiter surface, and the CD band spectrum is observed at this region. It is considered that the deuterium ion flux and heat load concentrate at this region and enhance carbon impurity generation.r_che
Extension of the operational regime of the LHD towards a deuterium experiment
Takeiri, Y.,Morisaki, T.,Osakabe, M.,Yokoyama, M.,Sakakibara, S.,Takahashi, H.,Nakamura, Y.,Oishi, T.,Motojima, G.,Murakami, S.,Ito, K.,Ejiri, A.,Imagawa, S.,Inagaki, S.,Isobe, M.,Kubo, S.,Masamune, S IOP 2017 Nuclear fusion. Fusion nucléaire. &n.Illiga Vol.57 No.10
<P>As the finalization of a hydrogen experiment towards the deuterium phase, the exploration of the best performance of hydrogen plasma was intensively performed in the large helical device. High ion and electron temperatures, <I>T</I> <SUB>i</SUB> and <I>T</I> <SUB>e</SUB>, of more than 6 keV were simultaneously achieved by superimposing high-power electron cyclotron resonance heating onneutral beam injection (NBI) heated plasma. Although flattening of the ion temperature profile in the core region was observed during the discharges, one could avoid degradation by increasing the electron density. Another key parameter to present plasma performance is an averaged beta value <img ALIGN='MIDDLE' ALT='$\left\langle \beta \right\rangle $ ' SRC='http://ej.iop.org/images/0029-5515/57/10/102023/nfaa7fc2ieqn001.gif'/>. The high <img ALIGN='MIDDLE' ALT='$\left\langle \beta \right\rangle $ ' SRC='http://ej.iop.org/images/0029-5515/57/10/102023/nfaa7fc2ieqn002.gif'/> regime around 4% was extended to an order of magnitude lower than the earlier collisional regime. Impurity behaviour in hydrogen discharges with NBI heating was also classified with a wide range of edge plasma parameters. The existence of a no impurity accumulation regime, where the high performance plasma is maintained with high power heating >10 MW, was identified. Wide parameter scan experiments suggest that the toroidal rotation and the turbulence are the candidates for expelling impurities from the core region.</P>