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``SNR with Suzaku (tentative)" (Invited) 37th COSPAR Scientific Assembly, Montreal, Canada, 13-20 July 2008 (to be presented)
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``Particle Acceleration in the Hot Evolving Universe: Prospect for XEUS" (Oral) XEUS - Physics of the Hot Evolving Universe Workshop, ESTEC, Noordwijk, The Netherlands, 5-6 March 2008
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``Panchromatic View of Cosmic Accelerators with Cutting-Edge Observatories" (Invited) International Workshop on Plasma Shocks and Particle Acceleration, Senri Hankyu Hotel, Osaka, 24-26 January 2008
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``New Insights into Cosmic-ray Acceleration in SNRs" (Invited) The Suzaku X-ray Universe, Catamaran Hotel, San Diego USA, 10-12 December 2007
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``Cosmic-ray Acceleration in Galactic SNRs" (Oral) NUSO conference, Nagoya University, 29 November 2007
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``Resolved Jets in Quasars and Radio Galaxies" (Invited) Eight Years of Science with Chandra, Huntsville Alabama USA, 23-25 October 2007
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``Multiwavelength Analysis of the Large-scale Emission in Quasar Jets'' (Oral) High Energy Phenomena in Relativistic Outflows, Dublin Ireland, 24-28 September 2007
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``Hard Synchrotron X-ray Emission of TeV SNRs'' (Oral) XXIII Texas Symposium on Relativistic Astrophysics, Melbourne Australia, December, 2006
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``Hard X-ray Observations of Cosmic-ray Accelerators'' (Invited) Locating PeV Cosmic-ray Accelerators: Future Detectors in Multi-TeV Gamma-ray Astronomy, Adelaide Australia, December, 2006
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``Large-scale Jets in Powerful Quasars'' (Oral) Suzaku-HESS Studies of Non-thermal Universe (2), Heidelberg Germany, September, 2006
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``Suzaku AO2 in Collaboration with HESS'' (Oral) Suzaku-HESS Studies of Non-thermal Universe (1), Heidelberg Germany, August, 2006
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``Large-scale Jet in Quasar 3C 273'' (Poster) Challenges in Relativistic Jet, Cracow Poland, June, 2006
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``First Detection of Mid-Infrared Light from Quasar Jets'' (Oral) American Astronomical Society 207th Meeting, Washington DC, January 2006
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``The detection of IR light from the large-scale jet of PKS 0637-752'' (Oral) New England Regional Quasar and AGN Meeting, Boston University, May 2005
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``Nonthermal X-radiation of SNR RX J1713.7-3946: The Relations to a Nearby Molecular Cloud'' (Poster) The Gamma 2004 Symposium on High-Energy Gamma-Ray Astronomy, Heidelberg, July 2004
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``Bremsstrahlung X-radiation from Loss-flattened Electron Distribution in the Supernova Remnant G78.2+2'' (Poster) New Visions of the X-ray Universe, ESTEC Noordwijk, The Netherlands, Nov 2001
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``Study of Energy Response of GSO(Ce) Scintillator for the ASTRO-E Hard X-ray Detector'' (Poster) IEEE Nuclear Science Symposium and Medical Imaging Conference, Lyon, France, Oct 2000``