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  1. No Access

    Article

    Perturbation Theory of KMS States

    We extend the new perturbation formula of equilibrium states by Hastings to KMS states of general \(W^*\) ...

    S. Ejima, Y. Ogata in Annales Henri Poincaré (2019)

  2. No Access

    Article

    Improvement of the Photoconductive Characteristics of ZnO Single Crystals by Annealing

    The photoconductive characteristics of undoped ZnO single crystals grown by the hydrothermal method were improved by annealing in oxygen gas. The photocurrent in the visible light region decreased with anneali...

    T. Abe, Y. Nameshida, Y. Ogata, A. Miura, A. Nakagawa in Journal of Electronic Materials (2018)

  3. Article

    Open Access

    Assessing the progression of chronic periodontitis using subgingival pathogen levels: a 24-month prospective multicenter cohort study

    The diagnosis of the progression of periodontitis presently depends on the use of clinical symptoms (such as attachment loss) and radiographic imaging. The aim of the multicenter study described here was to ev...

    E. Kakuta, Y. Nomura, T. Morozumi, T. Nakagawa, T. Nakamura, K. Noguchi in BMC Oral Health (2017)

  4. Article

    Open Access

    The longitudinal effect of the aldehyde dehydrogenase 2*2 allele on the risk for nonalcoholic fatty liver disease

    Aldehyde dehydrogenase 2 (ALDH2) detoxifies toxic aldehydes and has a key role in protecting the liver. An elevated gamma-glutamyl transferase (GGT) level is related to oxidative stress and nonalcoholic fatty ...

    K Oniki, K Morita, T Watanabe, A Kajiwara, K Otake, K Nakagawa in Nutrition & Diabetes (2016)

  5. No Access

    Article

    Aldehyde dehydrogenase 2 as a potential protective factor for renal insufficiency in Japanese subjects with heart failure: a pilot study

    K Morita, K Oniki, H Miyazaki, J Saruwatari, Y Ogata in Journal of Human Hypertension (2014)

  6. No Access

    Article

    Radioactivity measurement with a plastic scintillation vial

    Liquid scintillation counting is widely used to measure radioactivity, but it generates radioactive organic liquid waste. Not to generate the liquid waste using a liquid scintillation counter, novel counting m...

    Y. Ogata in Journal of Radioanalytical and Nuclear Chemistry (2007)

  7. No Access

    Article

    The Green-Kubo Formula for the Spin-Fermion System

    The spin-fermion model describes a two level quantum system \(\mathcal{S}\) (spin 1/2) coupled to finitely many free ...

    V. Jakšić, Y. Ogata, C. -A. Pillet in Communications in Mathematical Physics (2006)

  8. No Access

    Article

    The Green-Kubo Formula and the Onsager Reciprocity Relations in Quantum Statistical Mechanics

    We study linear response theory in the general framework of algebraic quantum statistical mechanics and prove the Green-Kubo formula and the Onsager reciprocity relations for heat fluxes generated by temperatu...

    V. Jakšić, Y. Ogata, C. A. Pillet in Communications in Mathematical Physics (2006)

  9. No Access

    Article

    Linear Response Theory for Thermally Driven Quantum Open Systems

    This note is a continuation of our recent paper [V. Jakšić Y. Ogata, and C.-A. Pillet, The Green-Kubo formula and Onsager reciprocity relations in quantum statistical mechanics. Commun. Math. Phys. in press.] whe...

    V. Jakšić, Y. Ogata, C.-A. Pillet in Journal of Statistical Physics (2006)

  10. No Access

    Article

    Numerical and experimental investigation of laser propulsion

    Aiming at the application of laser propulsion to stratospheric flight, we propose here a repetitive propulsion system, friction-less environment and metal-free ablation in a water cannon target. A special rese...

    Y. Ogata, T. Yabe, T. Ookubo, M. Yamaguchi, H. Oozono, T. Oku in Applied Physics A (2004)

  11. No Access

    Article

    A new ultimate anus-preserving operation for extremely low rectal cancer and for anal canal cancer

    To avoid permanent colostomy, we perform a new ultimate anus preserving operation for extremely low rectal cancer or for anal canal cancer. According to our pathologic study, two different removal methods of a...

    K. Shirouzu, Y. Ogata, Y. Araki, Y. Kishimoto, Y. Sato in Techniques in Coloproctology (2003)

  12. No Access

    Article

    Laser-driven vehicles – from inner-space to outer-space

    Laser-supported propulsion of a micro-airplane with a water-covered ablator is demonstrated. The repetitive use of an overlay structure is experimentally demonstrated with a specially designed water supply. Va...

    T. Yabe, C. Phipps, K. Aoki, M. Yamaguchi, R. Nakagawa, C. Baasandash in Applied Physics A (2003)

  13. No Access

    Article

    Tritium separation from heavy water by electrolysis with solid polymer electrolyte

    A tritium separation from heavy water by electrolysis using a solid polymer electrode layer was specified. The cathode was made of stainless steel or nickel. The electrolysis was performed for 1 hour at 5, 10,...

    Y. Ogata, Y. Sakuma, N. Ohtani, M. Kotaka in Journal of Radioanalytical and Nuclear Che… (2003)

  14. No Access

    Article

    Removal of the impurities from environmental water samples for tritium measurement by liquid scintillation counting

    Liquid scintillation counting is the most popular method for tritium measurement, however, it takes much time and a lot of doing to distill off the impurities before mixing the sample water and liquid scintill...

    Y. Sakuma, Y. Ogata, N. Tsuji, H. Yamanishi in Journal of Radioanalytical and Nuclear Che… (2003)

  15. No Access

    Article

    Successful bone marrow transplantation from an unrelated donor in a patient with adult T cell leukemia

    We report a 51-year-old male with adult T cell leukemia (ATL) who received a BMT from an HLA-identical unrelated donor. The ATL proved refractory to chemotherapy, and he underwent BMT conditioned with CY/TBI. ...

    M Ogata, Y Ogata, T Imamura, E Ohtsuka, H Kikuchi in Bone Marrow Transplantation (2002)

  16. No Access

    Article

    Expression of vascular endothelial growth factor and its receptor KDR (kinase domain-containing receptor)/Flk-1 (fetal liver kinase-1) as prognostic factors in human colorectal cancer

    Y. Harada, Y. Ogata, K. Shirouzu in International Journal of Clinical Oncology (2001)

  17. No Access

    Article

    Seismicity Analysis through Point-process Modeling: A Review

    —The occurrence times of earthquakes can be considered to be a point process, and suitable modeling of the conditional intensity function of a point process is useful for the investigation of various statistic...

    Y. Ogata in pure and applied geophysics (1999)

  18. No Access

    Article

    Expression of mRNA Encoding Tissue-Nonspecific Alkaline Phosphatase in Human Dental Tissues

    Tissue-nonspecific-type alkaline phosphatase (TNSALP) is found in the bone, liver, kidney, and other tissues, and its gene consists of 12 exons with the coding sequence beginning in the second exon. Recently,...

    M. Goseki-Sone, T. Iimura, K. Takeda, A. Nifuji, Y. Ogata in Calcified Tissue International (1999)

  19. No Access

    Chapter and Conference Paper

    A Dream to Solve All Phases of Matter, Solid, Liquid, and Gas, Simultaneously

    Various innovations in basic technology have made the develo** speed of computer hardware faster than that of software technology. Similar innovations are required in order to accelerate the develo** speed...

    T. Yabe, Y. Ogata, T. Nakamura, Y. Zhang in Numerical Astrophysics (1999)

  20. No Access

    Article

    Clinical evaluation of gastric fundic gland polyps without familial polyposis coli

    Assessments were made of 63 cases of fundic gland polyposis (FGP) unassociated with adenomatosis coli. These cases were evaluated by radiological examination over 2 years follow-up. All polyps were pathologica...

    T. Tsuchigame, R. Saito, Y. Ogata, S. Ueno, A. Arakawa, T. Matsukawa in Abdominal Imaging (1995)

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