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Fujisawa, K.,Ka, I.,Le Borgne, V.,Kang, C.S.,Kobayashi, K.,Muramatsu, H.,Hayashi, T.,Kim, Y.A.,Endo, M.,Terrones, M.,El Khakani, M.A. Pergamon Press ; Elsevier Science Ltd 2016 Carbon Vol.96 No.-
<P>Carbon nanotubes (CNTs)/lead sulfide (PbS) quantum dots (QDs) nanohybrids have been synthesized through the controlled decoration of CNTs by PbS-QDs by means of the pulsed laser deposition technique. The size of the PbS-QDs and their surface coverage of the CNTs' surface are monitored through the number of laser ablation pulses. Here, while comparing both single-walled (SW) and double-walled (DW) CNTs based nanohybrids, focus is put on the investigation of their interfacial structure and the effect of inner tube. Anchoring PbS through direct sulfur-carbon chemical bonding between CNTs' outer wall and PbS-QDs, which are thought to be profitable for efficient charge transfer but not for charge transport along CNT's tube axis, are confirmed by Raman spectroscopy and X-ray photoelectron spectroscopy. In the case of double-walled CNTs (DWCNTs), inner tube remains unaffected by ablated PbS species, then it serves efficient conduction way for transferred photo-generated charges. This unique feature of the DWCNTs based nanohybrid, where the photocharges are generated by the chemically bonded PbS-QDs to the outer tube and then efficiently conveyed by the inner tube of the nanotubes, is highly likely at the origin of their significantly higher photo-activity (several hundred times than in SWCNTs-based nanohybrids). (C) 2015 Elsevier Ltd. All rights reserved.</P>
Sawtooth-triggered limit-cycle oscillations and I-phase in the HL-2A tokamak
Zhao, K.J.,Cheng, J.,Diamond, P.H.,Dong, J.Q.,Yan, L.W.,Hong, W.Y.,Xu, M.,Tynan, G.,Miki, K.,Huang, Z.H.,Itoh, K.,Itoh, S.-I.,Fujisawa, A.,Nagashima, Y.,Inagaki, S.,Wang, Z.X.,Wei, L.,Song, X.M.,Lei, IOP Publishing 2013 Nuclear fusion. Fusion nucléaire. &n.Illiga Vol.53 No.12
Plasma-Confinement Physics Study in Compact Helical System
stoichi Okamura,A. Fujisawa,A. Shimizu,C. Takahashi,C. Suzuki,H. Iguchi,H. Nakano,H. Matsushita,K. Nagaoka,K. Matsuo,K. Ida,K. Toi,K. Nakamura,K. Matsuoka,M. Yoshinuma,M. Isobe,M. Takeuchi,R. Ikeda,S. 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
In a CHS experiment, various types of transport barrier have been studied. An internal transport barrier (ITB) for electrons in a stellarator was first found in CHS, and the ITB for improved ion confinement was also found. H-mode (edge transport barrier) study in CHS showed many common features in transition to tokamak experiments, although the magnetic surface quantities are very different. Discharges with a combination of ETB and ITB were also found. Two heavy ion beam diagnostics in CHS showed a new direct measurement of zonal flow structure in toroidal confinement. The relation between the fluctuation and the transport barrier was also studied.
한국産 큰원뿔나방科(나비目)의 8未記錄種 및 5種의 同物異名처리
PARK Y.M,FUJISAWA K,K.T. PARK 한국응용곤충학회 1997 한국응용곤충학회지 Vol.36 No.4
큰원뿔나방과(Depressariidae)의 8종, 을 우리나라 미기록종으로 보고한다. Depressaria niphosyrohas Meyrick과 D. basicostata Matsumura는 D. taciturna Meyrick의 동물이명으로 Agonopterix sapporensis(Matsumura)와 A. ochrocephala Saito는 A. angelicella(Hubner), 그리고 A. iharai Fujjisawa는 A. ocellana(Fabricius)의 동물이명으로 정리하였다. Eight species of Depressariidae, , are reported for the first time from Korea. Depressria niphospyrphos Meyrick and D. basicosta Matsumura are newly synonymized with D. taciturna Meyrick. Agonopterix sapporensis (Matsumura) and A. ochroephala Saito are also synonymized with A. angeliocella(Hubner) respectively, and A. iharai Fujisawa with A. ocellana (Fabricius).
Adhim, Z,Matsuoka, T,Bito, T,Shigemura, K,Lee, K-M,Kawabata, M,Fujisawa, M,Nibu, K,Shirakawa, T Nature Publishing Group 2011 The British journal of cancer Vol.105 No.3
<P><B>Background:</B></P><P>Although the anti-tumour effect of cyclooxygenase-2 (Cox-2) inhibitors in invasive bladder cancer has been confirmed, its mechanisms of action are unclear. Recently, the concept of an epithelial-to-mesenchymal transition (EMT) promoting carcinoma progression has been suggested, and a key feature of the EMT is the downregulation of E-cadherin. In this study, we investigated the effect of Cox-2 inhibitors on reversal EMT and tumour growth inhibition in bladder cancer cells.</P><P><B>Methods:</B></P><P>We used three Cox-2 inhibitors, etodolac, celecoxib and NS-398 and three human bladder cancer cell lines, T24, 5637 and KK47, in this study. T24 xenograft tumour mouse model was used in the <I>in vivo</I> study.</P><P><B>Results:</B></P><P>Within the clinical drug concentrations, only etodolac showed the <I>in vitro</I> growth inhibition in T24 not in the other cell lines. Etodolac reduced <I>SNAIL</I> mRNA and vimentin cell surface expression, and induced <I>E-cadherin</I> mRNA and E-cadherin cell surface expression, in T24. Etodolac also most strongly inhibited the cell migration of T24 <I>in vitro</I> and showed the highest tumour growth inhibition in T24 tumour <I>in vivo</I>.</P><P><B>Conclusion:</B></P><P>Etodolac at clinical doses exhibited induced <I>in vitro</I> and <I>in vivo</I> anti-tumour effects and reversal effect of EMT in T24. These results suggest that etodolac is a good candidate for an anti-tumour or chemopreventive reagent for high-grade bladder cancer.</P>