289 research outputs found

    Analyses of Southerly Winds along the Kitakami Basin when the Yamase Prevails

    Get PDF
    The Yamase is a cold, humid, northeasterly wind blowing toward the coast on the Pacific side of the Tohoku region of Japan during summer. However, the Yamase blows in a southerly direction in the Kitakami Basin. Inthis study, analyses of data and numerical experiments using the Weather Research and Forecasting(WRF) model were conducted to determine the reason for this southerly direction. The results of numerical experiments indicated that the Yamase is southerly in the Kitakami Basin where theactual topography is reduced to 90% of the average terrain height. Meanwhile, it is easterly in areas of the Kitakami Basin when the topography is reduced to 80% of the average terrain height. The results of numerical experiments were consistent with those of mechanical analyses using the Foude number and Rossby number. Analyses of the Yamase in the Kitakami Basin therefore suggest that its characteristics are influenced by topographic obstacles and gravitational flow

    Cardiac and skeletal muscle abnormality in taurine transporter-knockout mice

    Get PDF
    Taurine, a sulfur-containing β-amino acid, is highly contained in heart and skeletal muscle. Taurine has a variety of biological actions, such as ion movement, calcium handling and cytoprotection in the cardiac and skeletal muscles. Meanwhile, taurine deficiency leads various pathologies, including dilated cardiomyopathy, in cat and fox. However, the essential role of taurine depletion on pathogenesis has not been fully clarified. To address the physiological role of taurine in mammalian tissues, taurine transporter-(TauT-) knockout models were recently generated. TauTKO mice exhibited loss of body weight, abnormal cardiac function and the reduced exercise capacity with tissue taurine depletion. In this chapter, we summarize pathological profile and histological feature of heart and skeletal muscle in TauTKO mice

    Emergency power supply using flywheel and doubly fed induction generator

    Get PDF
    An emergency power supply (EPS) using an induction generator with a fly-wheel energy storage is investigated. Two different exciting system for the wounded rotor winding have been investigated. The principles of the operation and experimental results are shown. The results of start-up and steady state condition indicate that the inverter rating of the doubly fed induction generator is reduced fairly.INTELEC 2009 - 2009 International Telecommunications Energy Conference : Incheon, South Korea, 2009.10.18-2009.10.2

    Regional climate simulations to diagnose environmental changes in Mongolia

    Get PDF
    Arid/semi - arid region in Northeast Asia has been suffering from climate change due to the global warming. Cold season temperature has been rapidly increasing in recent years, especially during the cold season. Dynamical downscaling using a regional climate model is one of the methods to evaluate the regional - scale climate change with high resolution. In this study, numerical experiments were carried out in order to reproduce past and future regional climate condition in Mongolia for the use of environmental studies in RAISE project (Sugita, 2002). A modified version of the Regional Atmospheric Modeling System developed at Terrestrial Environment Research Center, University of Tsukuba (TERC - RAMS) was adopted to simulate hydrometeorological condition with 30 km horizontal resolution. Spatio - temporal features in ten - year integration for 1994 - 2003 were compared with local observations obtained during RAISE (The Rangelands Atmosphere - hydrosphere - biosphere Interaction Study Experiment in northeastern Asia; Sugita, 2002) project. Seasonal changes of temperature and precipitation were well reproduced in the TERC - RAMS although cold - season temperature and precipitation were overestimated.Downscale experiments nested within the global warming test runs of general circulation model for 2071- 2080 period indicated the possible climate change in Northeast Asia including Mongolia. One - hour interval dataset of model variables in both recent and future climate integrations will be provided to the research community. Variety of impact assessment such as on agricultural production, ground water, and carbon cycle can be possible by the use of this dataset

    Photon correlation in GaAs self-assembled quantum dots

    Full text link
    We report on photon coincidence measurement in a single GaAs self-assembled quantum dot (QD) using a pulsed excitation light source. At low excitation, when a neutral exciton line was present in the photoluminescence (PL) spectrum, we observed nearly perfect single photon emission from an isolated QD at 670 nm wavelength. For higher excitation, multiple PL lines appeared on the spectra, reflecting the formation of exciton complexes. Cross-correlation functions between these lines showed either bunching or antibunching behavior, depending on whether the relevant emission was from a biexciton cascade or a charged exciton recombination.Comment: 5 pages, 3 figure

    Prognostic Impact of Baseline Hemoglobin Levels on Long-Term Thrombotic and Bleeding Events After Percutaneous Coronary Interventions

    Get PDF
    Background: Association of baseline hemoglobin levels with long-term adverse events after percutaneous coronary interventions has not been yet thoroughly defined. We aimed to assess the clinical impact of baseline hemoglobin on long-term ischemic and bleeding risk after percutaneous coronary intervention. Methods and Results: Using the pooled individual patient-level data from the 3 percutaneous coronary intervention studies, we categorized 19 288 patients into 4 groups: high-normal hemoglobin (≥14.0 g/dL; n=7555), low-normal hemoglobin (13.0-13.9 g/dL in men and 12.0-13.9 g/dL in women; n=5303), mild anemia (11.0-12.9 g/dL in men and 11.0-11.9 g/dL in women; n=4117), and moderate/severe anemia (<11.0 g/dL; n=2313). Median follow-up duration was 3 years. Low-normal hemoglobin, mild anemia, and moderate/severe anemia correlated with significant excess risk relative to high-normal hemoglobin for GUSTO (Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Arteries Trial) moderate/severe bleeding, with adjusted hazard ratios of 1.22 (95% CI, 1.04-1.44), 1.73 (95% CI, 1.47-2.04), and 2.31 (95% CI, 1.92-2.78), respectively. Moderate/severe anemia also correlated with significant excess risk relative to high-normal hemoglobin for the ischemic composite end point of myocardial infarction/ischemic stroke (adjusted hazard ratio, 1.33; 95% CI, 1.11-1.60), whereas low-normal hemoglobin and mild anemia did not. However, the excess risk of low-normal hemoglobin, mild anemia, and moderate/severe anemia relative to high-normal hemoglobin remained significant for ischemic stroke and for mortality. Conclusions: Decreasing baseline hemoglobin correlated with incrementally higher long-term risk for major bleeding, ischemic stroke, and mortality after percutaneous coronary intervention. Even within normal range, lower baseline hemoglobin level correlated with higher ischemic and bleeding risk
    corecore