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  1. No Access

    Article

    Thermodynamic evidence for a field-angle-dependent Majorana gap in a Kitaev spin liquid

    The exactly solvable Kitaev model of two-dimensional honeycomb magnets has a quantum spin liquid phase characterized by the emergence of fractionalized Majorana fermion excitations. In the paramagnetic state o...

    O. Tanaka, Y. Mizukami, R. Harasawa, K. Hashimoto, K. Hwang, N. Kurita in Nature Physics (2022)

  2. No Access

    Article

    A dusty compact object bridging galaxies and quasars at cosmic dawn

    Understanding how super-massive black holes form and grow in the early Universe has become a major challenge1,2 since it was discovered that luminous quasars existed only 700 million years after the Big Bang3,4. ...

    S. Fujimoto, G. B. Brammer, D. Watson, G. E. Magdis, V. Kokorev, T. R. Greve in Nature (2022)

  3. No Access

    Article

    Hopelessness and Depression Predict Sarcopenia in Advanced CKD and Dialysis: A Multicenter Cohort Study

    Depression and hopelessness are frequently experienced in chronic kidney disease (CKD) and are generally associated with lessened physical activity. The aim of this study was to quantify the associations betwe...

    Noriaki Kurita, T. Wakita, S. Fujimoto in The journal of nutrition, health & aging (2021)

  4. Article

    Open Access

    Reproductive interference in live-bearing fish: the male guppy is a potential biological agent for eradicating invasive mosquitofish

    The eradication of invasive exotic species is desirable but often infeasible. Here, we show that male guppies are a potential biological agent for eradicating invasive mosquitofish through the mechanism of rep...

    K. Tsurui-Sato, S. Fujimoto, O. Deki, T. Suzuki, H. Tatsuta, K. Tsuji in Scientific Reports (2019)

  5. No Access

    Article

    Multi-scale analysis on wake structures of asymmetric cylinders with different aspect ratios

    The wake flow originated by three-dimensional bluff bodies having the different aspect ratio is experimentally studied in this paper. The turbulent wakes generated by asymmetric- and semi-cylinders were first ...

    S. Fujimoto, A. Rinoshika in Journal of Visualization (2017)

  6. Article

    Colossal thermomagnetic response in the exotic superconductor URu2Si2

    The Nernst coefficient is a measure of the transverse thermoelectric effect in a conductor. Superconducting fluctuations magnify this effect but in URu2Si2, the million-fold enhancement suggests that the fluctuat...

    T. Yamashita, Y. Shimoyama, Y. Haga, T. D. Matsuda, E. Yamamoto, Y. Onuki in Nature Physics (2015)

  7. No Access

    Chapter and Conference Paper

    Orthogonal Wavelet Analysis of Flow Structures in Asymmetric Wakes

    The turbulent wake structures of various scales generated by an asymmetric bluff body have been experimentally investigated in this paper. Firstly, the instantaneous velocity and vorticity of turbulent wake we...

    S. Fujimoto, A. Rinoshika in Fluid-Structure-Sound Interactions and Control (2014)

  8. No Access

    Chapter

    Microscopic Theory of Pairing Mechanisms

    This chapter deals with the microscopic theory of pairing mechanisms for noncentrosymmetric superconductors. One of curious questions is how to understand microscopically the parity mixing arising from the int...

    Y. Yanase, S. Fujimoto in Non-Centrosymmetric Superconductors (2012)

  9. No Access

    Chapter

    Aspects of Spintronics

    In this chapter, transport properties raised by antisymmetric spin-orbit interactions in noncentrosymmetric systems are discussed. We consider magnetoelectric effects, the anomalous Hall effect, the spin Hall ...

    S. Fujimoto, S. K. Yip in Non-Centrosymmetric Superconductors (2012)

  10. Article

    Metformin suppresses hepatic gluconeogenesis and lowers fasting blood glucose levels through reactive nitrogen species in mice

    Metformin, the major target of which is liver, is commonly used to treat type 2 diabetes. Although metformin activates AMP-activated protein kinase (AMPK) in hepatocytes, the mechanism of activation is still n...

    Y. Fujita, M. Hosokawa, S. Fujimoto, E. Mukai, A. Abudukadier, A. Obara in Diabetologia (2010)

  11. Article

    Src activation generates reactive oxygen species and impairs metabolism–secretion coupling in diabetic Goto–Kakizaki and ouabain-treated rat pancreatic islets

    Na+/K+-ATPase inhibition by ouabain suppresses ATP production by generating reactive oxygen species (ROS) and impairs glucose-induced insulin secretion from pancreatic islets. To clarify the signal-transducing fu...

    R. Kominato, S. Fujimoto, E. Mukai, Y. Nakamura, K. Nabe, M. Shimodahira in Diabetologia (2008)

  12. No Access

    Article

    Synergistic effects of injection of bone marrow cells into both portal vein and bone marrow on tolerance induction in transplantation of allogeneic pancreatic islets

    We have established a new method for allogeneic pancreatic islet (PI) transplantation: relatively low doses of irradiation followed by simultaneous transplantation of PIs and bone marrow cells (BMCs) via the p...

    K Ikebukuro, Y Adachi, Y Suzuki, M Iwasaki, K Nakano in Bone Marrow Transplantation (2006)

  13. No Access

    Chapter and Conference Paper

    Prediction of cerebral blood flow restoration after extracranial-intracranial bypass surgery using superficial temporal artery duplex ultrasonography (STDU)

    We investigated the availability of superficial temporal artery (STA) duplex ultrasonography (STDU) for evaluating the improvement of cerebral hemodynamics after extracranial-intracranial (EC-IC) bypass. This ...

    T. Inoue, S. Fujimoto in New Trends of Surgery for Stroke and its Perioperative Management (2005)

  14. Article

    40th EASD Annual Meeting of the European Association for the Study of Diabetes

    M. Veitenhansl, K. Stegner, F.-X. Hierl, C. Dieterle, H. Feldmeier, B. Gutt in Diabetologia (2004)

  15. Article

    Open Access

    Promising survival for patients with glioblastoma multiforme treated with individualised chemotherapy based on in vitro drug sensitivity testing

    We retrospectively investigated the efficacy and feasibility of individualised chemotherapy based on in vitro drug sensitivity testing (DST) for patients with glioblastoma multiforme. A total of 40 consecutive pa...

    Y Iwadate, S Fujimoto, H Namba, A Yamaura in British Journal of Cancer (2003)

  16. No Access

    Article

    Cytoreductive surgery combined with organ resection for advanced ovarian carcinoma

    Y. Todo, N. Sakuragi, M. Oikawa, H. Negishi in International Journal of Clinical Oncology (2003)

  17. Article

    Open Access

    Frequent expression of new cancer/testis gene D40/AF15q14 in lung cancers of smokers

    We found a significant correlation between lung cancer in smokers and the expression of a human gene, D40, predominantly expressed in testis and cancers. In an attempt to clone a novel human gene, we screened ...

    M Takimoto, G Wei, H Dosaka-Akita, P Mao, S Kondo, N Sakuragi in British Journal of Cancer (2002)

  18. No Access

    Chapter

    Development of a 5 to 20 W at 80 K GM Pulse Tube Cryocooler

    In order to select the most suitable phase shifting mechanism for the GM pulse tube coolers applied to cryoelectronic devices, we evaluated the performance of both double-inlet and four-valve type phase shifti...

    S. Fujimoto, Y.M. Kang, Y. Matsubara in Cryocoolers 10 (2002)

  19. No Access

    Chapter

    New Regenerator Material for Sub-4 K Cryocoolers

    A new magnetic regenerator material for sub-4 K cryocoolers has been studied. Some rare-earth oxide magnetic materials have the potential to provide a high heat capacity below 4 K. From surveying the garnets a...

    T. Numazawa, O. Arai, A. Sato, S. Fujimoto, T. Oodo, Y. M. Rang in Cryocoolers 11 (2002)

  20. No Access

    Chapter

    Experimental Study of a 4 K Pulse Tube Cryocooler

    A prototype two-stage pulse tube cryocooler was previously developed that uses a double-inlet configuration. When the second-stage regenerator was filled with conventional magnetic regenerator materials, Er ...

    S. Fujimoto, T. Kurihara, T. Oodo, Y. M. Kang, T. Numazawa, Y. Matsubara in Cryocoolers 11 (2002)

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