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  1. No Access

    Article

    Wall Enhancement of the Intracranial Aneurysms Revealed by Magnetic Resonance Vessel Wall Imaging Using Three-Dimensional Turbo Spin-Echo Sequence with Motion-Sensitized Driven-Equilibrium: A Sign of Ruptured Aneurysm?

    Wall enhancement of saccular cerebral aneurysms has not been researched sufficiently. Our purpose of this study was to investigate the incidence of aneurysmal wall enhancement by the three-dimensional turbo sp...

    S. Nagahata, M. Nagahata MD, PhD, M. Obara, R. Kondo… in Clinical Neuroradiology (2016)

  2. Article

    Open Access

    Subclonal evolution involving SF3B1 mutations in chronic lymphocytic leukemia

    M Schwaederlé, E Ghia, L Z Rassenti, M Obara, M L Dell' Aquila, J F Fecteau… in Leukemia (2013)

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  3. Article

    Open Access

    Engineering Au Nanoparticle Arrays on SiO2 Glass by Pulsed UV Laser Irradiation

    We study semi-regular arrays of Au nanoparticles (NP) obtained via UV laser irradiation of thin Au films on glass substrate. The NP structures are prepared from films of a thickness up to 60 nm produced by dis...

    K. Grochowska, G. Śliwiński, A. Iwulska, M. Sawczak, N. Nedyalkov… in Plasmonics (2013)

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  4. No Access

    Article

    High-intensity near-field generation for silicon nanoparticle arrays with oblique irradiation for large-area high-throughput nanopatterning

    We present near-field distributions around an isolated 800-nm silica or silicon nanoparticle, and nanoparticle arrays of 800-nm silica or silicon nanoparticles, on a silicon substrate by the finite-difference ...

    T. Miyanishi, Y. Tsunoi, M. Terakawa, M. Obara in Applied Physics B (2012)

  5. No Access

    Article

    Efficacy of folinic acid in preventing oral mucositis in allogeneic hematopoietic stem cell transplant patients receiving MTX as prophylaxis for GVHD

    As the safety of folinic acid administration and its efficacy for reducing the toxicity of MTX remain controversial, we assessed the effect of folinic acid administration after MTX treatment for GVHD prophylax...

    J Sugita, T Matsushita, H Kashiwazaki, M Kosugi, S Takahashi… in Bone Marrow Transplantation (2012)

  6. No Access

    Article

    Order to disorder optical phase transition in random photonic crystals

    Transition process of optical modal properties induced by the introduction of randomness into random photonic crystals is investigated by a computational method. We analyze an impulse response of two-dimension...

    S. Takeda, S. Hamada, R. Peretti, P. Viktorovitch, M. Obara in Applied Physics B (2012)

  7. No Access

    Article

    Interaction between ultrashort laser pulses and gold nanoparticles: nanoheater and nanolens effect

    Theoretic and experimental results on the heating process and near field localization arising when gold nanoparticles are irradiated by ultrashort laser pulses are presented. The system under consideration con...

    N. N. Nedyalkov, S. Imamova, P. A. Atanasov, Y. Tanaka… in Journal of Nanoparticle Research (2011)

  8. No Access

    Article

    Tuneabilities of localized electromagnetic modes in random nanostructures for random lasing

    The modal characteristics of localized electromagnetic waves inside random nanostructures are theoretically presented. It is crucial to know the tuneabilities of the localized modes systematically for demonstr...

    S. Takeda, M. Obara in Applied Physics B (2010)

  9. No Access

    Article

    Femtosecond-laser nanofabrication onto silicon surface with near-field localization generated by plasmon polaritons in gold nanoparticles with oblique irradiation

    Nanohole fabrication process with gold nanoparticles irradiated by femtosecond laser at different incident angles is investigated. Nanoparticles with diameter of 200 nm and laser irradiation with center wavele...

    T. Miyanishi, T. Sakai, N. N. Nedyalkov, M. Obara in Applied Physics A (2009)

  10. No Access

    Article

    Extremely selective modal oscillation of random lasing induced by strong multiple scattering

    We report on a new physical aspect of random lasing, an extremely selective modal oscillation by using a two-dimensional calculation model. The developed model consists of two theoretical subsystems, two-dimen...

    S. Takeda, M. Obara in Applied Physics B (2009)

  11. No Access

    Article

    Development of a highly stable Yb:YAG thin disk pulsed green laser for high power Ti:sapphire based amplifier at 100 kHz repetition rate

    We have developed a pulsed Yb:YAG thin disk green laser for pum** a 100 kHz and 10 W femtosecond laser. We optimized numerically and experimentally the open duration of the acousto-optic (AO) Q-switcher and ...

    T. Imahoko, K. Takasago, M. Kamata, J. Sakuma, T. Sumiyoshi, H. Sekita… in Applied Physics B (2007)

  12. No Access

    Article

    Tunable mid-infrared, high-energy femtosecond laser source for glyco-protein structure analysis

    We have developed a 6–12 μm mid-infrared (MIR) femtosecond laser source for glyco-protein structure analysis. The MIR femtosecond laser pulses are generated by a differential frequency generation (DFG) configu...

    T. Imahoko, K. Takasago, T. Sumiyoshi, H. Sekita, K. Takahashi… in Applied Physics B (2007)

  13. No Access

    Article

    Nanostructuring of silicon surface by femtosecond laser pulse mediated with enhanced near-field of gold nanoparticles

    Nanostructure fabrication on a silicon substrate using a near-field electromagnetic enhancement in the vicinity of gold nanoparticles is studied. Experimental and theoretical investigations are made in order t...

    N.N. Nedyalkov, H. Takada, M. Obara in Applied Physics A (2006)

  14. No Access

    Article

    Improvement of surface smoothness of Nd:KGd(WO4)2 films by nozzle-gas-assisted pulsed-laser deposition

    We have demonstrated efficient film oxidation of Nd:KGW [or Nd:KGd(WO4)2] films using a newly developed nozzle-gas-assisted pulsed-laser deposition (NGA-PLD) method. This technique is systematically studied and e...

    T. Okato, M. Obara in Applied Physics A (2005)

  15. No Access

    Article

    Materials processing by use of a Ti:Sapphire laser with automatically-adjustable pulse duration

    We have developed an automatic pulsewidth-adjustable femtosecond Ti:Sapphire laser system that can generate an output of 50 fs-1 ps in duration, and sub-mJ/pulse at a repetition rate of 1 kpps. The automatic p...

    M. Kamata, T. Imahoko, K. Ozono, M. Obara in Applied Physics A (2004)

  16. No Access

    Article

    Peripheral blood stem cell mobilization following CHOP plus rituximab therapy combined with G-CSF in patients with B-cell non-Hodgkin's lymphoma

    We mobilized peripheral blood stem cells (PBSC) following CHOP plus rituximab (CHOP-R) therapy, and compared with the findings following CHOP therapy without rituximab. All patients were given G-CSF starting f...

    T Endo, N Sato, Y Mogi, K Koizumi, M Nishio, K Fujimoto… in Bone Marrow Transplantation (2004)

  17. No Access

    Article

    Successful treatment with rituximab for autoimmune hemolytic anemia concomitant with proliferation of Epstein-Barr virus and monoclonal gammopathy in a post-nonmyeloablative stem cell transplant patient

    A 30-year-old Japanese woman who underwent nonmyeloablative stem cell transplantation from her HLA-matched sister developed autoimmune hemolytic anemia (AIHA). There was proliferation of EBV-DNA in her periphe...

    T. Endo, S. Nakao, K. Koizumi, M. Nishio, K. Fujimoto, T. Sakai… in Annals of Hematology (2004)

  18. No Access

    Article

    Control of the refractive index change in fused silica glasses induced by a loosely focused femtosecond laser

    We demonstrate waveguide fabrication using of a loosely focused femtosecond laser that induces both nonlinear ionization and nonlinear propagation in silica glasses without any scanning process. The numerical ...

    M. Kamata, M. Obara in Applied Physics A (2004)

  19. No Access

    Article

    Fabrication of Nd:KGW film on a Si substrate with a CeO2 buffer layer

    Highly textured single-oriented (110) Nd-doped potassium gadolinium tungstate [Nd:KGd(WO4)2 or Nd:KGW] thin films were successfully fabricated on (100) Si substrate by introducing a (100) CeO2 buffer layer using ...

    T. Okato, P.A. Atanasov, R.I. Tomov, M. Obara in Applied Physics A (2003)

  20. No Access

    Article

    Pulsed-laser deposition of a Nd:KGd(WO4)2 waveguide in Ar and O2 environments

    Thin-film Nd-doped potassium gadolinium tungstate (Nd:KGW or KGd(WO4)2) waveguides are deposited on (1102)sapphire or (100)YAG substrates by KrF laser ablation of potassium-rich ceramic targets in Ar and O2. The ...

    T. Okato, P.A. Atanasov, M. Obara in Applied Physics A (2003)

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