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Decreased incidence followed by comeback of pediatric infections during the COVID‑19 pandemic in Japan

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World Journal of Pediatrics 2022年第8期18卷 564-567页

作者： Cyrus Ghaznavi Haruka Sakamoto Takayuki Kawashima Sayaka Horiuchi Masahiro Ishikane Sarah Krull Abe Daisuke Yoneoka Akifumi Eguchi yuta tanoue Masahiro Hashizume Shuhei Nomura Department of Health Policy and Management School of MedicineKeio University35 ShinanomachiShinjuku-kuTokyo 160-8582Japan Medical Education Program Washington University School of Medicine in St.LouisSaint LouisUSA Department of Global Health Policy Graduate School of MedicineThe University of TokyoTokyoJapan Tokyo Foundation for Policy Research TokyoJapan Department of Hygiene and Public Health Tokyo Women’s Medical UniversityTokyoJapan Department of Mathematical and Computing Science Tokyo Institute of TechnologyTokyoJapan Center for Birth Cohort Studies University of YamanashiYamanashiJapan Disease Control and Prevention Center National Center for Global Health and MedicineTokyoJapan Division of Prevention National Cancer Center Institute for Cancer ControlTokyoJapan Infectious Disease Surveillance Center National Institute of Infectious DiseasesTokyoJapan Department of Sustainable Health Science Center for Preventive Medical SciencesChiba UniversityChibaJapan Institute for Business and Finance Waseda UniversityTokyoJapan

During the coronavirus disease 2019(COVID-19)pandemic,the Japanese government implemented several infection control measures,such as states of emergency(SoE)and school closures,and encouraged universal masking and hand *** activity restrictions and improved hygiene were found to be associated with declines in the incidence of infuenza during the 2019–2020 winter season[1].Prior studies have found that the incidence of seven pediatric infections,such as pharyngoconjunctivitis and varicella,decreased during and after the school closures in Japan[2].As activity restrictions continue to be lifted,there is growing concern that pediatric infections may suddenly return given that the pool of susceptible children increased during the pandemic[3].In this study,we use national infectious disease sentinel data from January 2012 to October 2021 to assess changes in the reported number of pediatric infections in Japan during the COVID-19 *** hypothesize that the reporting of many infectious diseases decreased during the early stages of the pandemic but ultimately returned to normal when activity restrictions were lifted.

关键词： closure return suddenly

Association between Daily Living Walking Speed and Lifestyle and Physiological Factors in Older, Female Pokémon GO Players

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Health 2021年第5期13卷 564-573页

作者： Shuhei Nomura Akifumi Eguchi Daisuke Yoneoka Takayuki Kawashima Norimichi Hirahara yuta tanoue Stuart Gilmour Hisateru Tachimori Hiroaki Miyata Department of Health Policy and Management School of Medicine Keio University Tokyo Japan Department of Global Health Policy Graduate School of Medicine The University of Tokyo Tokyo Japan Department of Sustainable Health Science Center for Preventive Medical Sciences Chiba University Chiba Japan Graduate School of Public Health St. Luke’s International University Tokyo Japan Department of Mathematical and Computing Science Tokyo Institute of Technology Tokyo Japan Institute for Business and Finance Waseda University Tokyo Japan Department of Clinical Epidemiology Translational Medical Center National Center of Neurology and Psychiatry Tokyo Japan Endowed Course for Health System Innovation School of Medicine Keio University Tokyo Japan

Background: Walking speed is a reliable barometer of adverse health outcomes, particularly among older people. Few studies evaluated factors associated with daily actual walking speed, rather than that measured in a laboratory setting or self-reported data. Methods: In a joint effort with The Pokémon Company, we recruited study participants through a women’s magazine and analyzed data from 63 Pokémon GO players. We measured the true walking speed in daily life among older women using a data-gathering mobile application. Then, using questionnaire survey data collected on these participants in 2019, we estimated the relationship between walking speed and their lifestyle and physiological factors. In the analysis, we employed a bi-directional stepwise linear regression approach, with the Akaike information criterion (AIC) for variable selection. Results: The mean age of the 63 participants was 63.03 years (standard deviation, SD 7.46);the average walking speed was 4.56 km per hour (SD 1.54);and 52 (82.5%) and 55 (87.3%) participants answered that they had excellent/good health physically and mentally, respectively. After adjusted for covariates in a stepwise regression approach, we identified a significant association between −1.33 (95% confidence intervals −2.52 to −0.15) km/hour lower walking speed and the experience of outdoor falls within a year. We also demonstrated that the walking speed was 1.07 (0.33 to 1.81) km/hour faster for those who had played Pokémon GO before the study started. Conclusions: The true walking speed in daily life among older women was measured by a data-gathering mobile application. Although all participants were w

关键词： Daily Actual Walking Speed Pokémon GO Players Experience of Outdoor Falls

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Research in Astronomy and Astrophysics 2021年第5期21卷 43-70页

作者： yuta Ito Department of Physics The Graduate Center of CUNY365 Fifth AvenueNew YorkNY 10016USA Department of Physics and Astronomy The College of Staten Island of CUNY2800 Victory BoulevardStaten IslandNY 10314USA

Fitting parametric models to globular clusters’structural profiles has been essential for the study of stellar *** provides their important structural parameters,such as the concentrations and core radii of the ***,existing parametric models can apply only to non-collapsing-core clusters in the early relaxation-evolution ***,a single parametric model cannot provide globular clusters’structural parameters in both the early and late evolution *** have recently found an accurate spectral solution for the self-similar orbit-averaged Fokker-Planck(OAFP)equation to model collapsingcore clusters at the late evolution *** present work establishes a new parametric model by combining the self-similar OAFP-and *** it is a single-mass and isotropic model,the new model applies to at least fifty-five Galactic globular clusters with resolved cores in all the evolution *** a main result,we show the characteristics of the relaxation times against the concentrations of the *** also affirm that the structures of low-concentration clusters are polytropic in the Milky Way.

关键词： (Galaxy:)globular clusters:general Galaxy:kinematics and dynamics methods:numerical

Drag-reduction behavior of an unusual nonionic surfactant in a circular pipe turbulent flow

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Journal of Hydrodynamics 2014年第3期26卷 400-405页

作者：蔡书鹏 HIGUCHI yuta Institute of High Pressure Water Jet Hunan University of Technology Graduate School of Science and Technology Kobe University

The Alkyl Polyglucoside（APG） is a nonionic surfactant with no toxicity and with high biodegradability, its drag-reduction behavior in a circular pipe flow is measured, and the rheological characteristics are investigated with a rheometer with a cone-plate flow cell. From the measured results, the APG is shown to have a high drag-reduction capacity, whose shear viscosity is shear-ratedependent at high concentrations, while its solution at concentrations with drag-reduction effects is non-viscoelastic as verified by zero relaxation time in the relaxation process of the shear stress, which contradicts the general viewpoint that there is a correlation between the viscoselastic characteristics and the turbulent drag reduction for the drag-reduction surfactant. However, the APG solution is birefringent as observed through a birefringent test, which indicates that there are rod-shaped micelles in the solution under the shearing flow. The higher extensional viscosity inferred from the extensional phenomenon observed in the measurements of the shear viscosity could be responsible for the drag reduction property of this nonionic surfactant.

关键词： drag reduction shear stress relaxation relaxation time viscoelasticity

Lepton mass matrix from double covering of A_(4) modular flavor symmetry

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Chinese Physics C 2022年第12期46卷 162-171页

作者： Hiroshi Okada yuta Orikasa Asia Pacific Center for Theoretical Physics(APCTP)-Headquarters San 31 Hyoja-dongNam-guPohang 790-784Korea Department of Physics Pohang University of Science and TechnologyPohang 37673Republic of Korea Institute of Experimental and Applied Physics Czech Technical University in PragueHusova 240/511000 Prague 1Czech Republic

We study a double covering of modular A_(4)flavor *** this end,we construct lepton models for canonical and radiative seesaw *** irreducible doublet representations,heavier Majorana fermion masses are characterized by one free parameter that would differentiate from A_(4)***χsquare numerical analysis,we demonstrate that both scenarios produce some predictions in case of normal hierarchy reproducing neutrino oscillation ***,no solution satisfies the neutrino oscillation data in case of radiative seesaw of inverted hierarchy.

关键词： flavor physics neutrino and Lepton mass beyond the standard model

MicroRNA-based targeting of the Rho/ROCK pathway in therapeutic strategies after spinal cord injury

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Neural Regeneration Research 2023年第2期18卷 311-312页

作者： Tetsu Kimura yuta Horikoshi Department of Anesthesia and Intensive Care Medicine Akita University Graduate School of MedicineAkitaJapan

Spinal cord injury(SCI)is one of the leading causes of disability and is a devastating condition that requires long-term care,reduces social productivity,and gives an immense emotional burden on patients and their fa *** frequently occurs due to traffic accidents,falls,slips,violence,sports,and medical accidents in today's *** initial mechanical damage triggers a secondary injury cascade that induces more intractable damage(Silva et al.,2014).Secondary injury mechanisms have been postulated,including neuronal apoptosis,inflammation,oxidative stress,and excitotoxicity.

关键词： damage injury emotional

Is the magic texture of Majorana neutrinos immanent in Dirac nature?

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Chinese Physics C 2023年第4期47卷 66-73页

作者： yuta Hyodo Teruyuki Kitabayashi Graduate School of Science and Technology Tokai University4-1-1 KitakanameHiratsukaKanagawa 259-1292Japan Department of Physics Tokai University4-1-1 KitakanameHiratsukaKanagawa 259-1292Japan

Magic textures are successful candidates of the correct texture for Majorana *** this study,we demonstrate that several types of magic textures of Majorana neutrinos are approximately immanent in the flavor mass matrix of Dirac *** addition,the normal mass ordering of Dirac neutrino masses is slightly preferable to inverted mass ordering in the context of magic textures.

关键词： neutrino mixing mass matrix magic texture

Counter-Rotating Type Tidal Stream Power Unit Boarded on Pillar(Performances and Flow Conditions of Tandem Propellers)

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Journal of Thermal Science 2013年第6期22卷 580-585页

作者： yuta Usui Toshiaki Kanemoto Koju Hiraki Kyushu Institute of Technology: Sensui 1-1 TobataKitakyushuFukuoka804-8550Japan

The authors have invented the unique counter-rotating type tidal stream power unit composed of the tandem pro- peUers and the double rotational armature type peculiar generator without the traditional stator. The front and the rear propellers counter-drive the inner and the outer armatures of the peculiar generator, respectively. The unit has the fixftful advantages that not only the output is sufficiently higher without supplementary equipment such as a gearbox, but also the rotational moment hardly act on the pillar because the rotational torque of both propel- lers/armatures are counter-balanced in the unit. This paper discusses experimentally the performances of the power unit and the effects of the propeller rotation on the sea surface. The axial force acting on the pillar in- creases naturally with the increase of not only the stream velocity but also the drag of the tandem propellers. Be- sides, the force vertical to the stream also acts on the pillar, which is induced from the Karman vortex street and the dominant frequencies appear owing to the front and the rear propeller rotations. The propeller rotating in close to the sea surface brings the abnormal wave and the amplitude increases as the stream velocity is faster and/or the drag is stronger.

关键词： Tidal stream Counter rotation Tandem propellers Generator Armature

Large Eddy Simulation of Methane Non-premixed Flame Using the Laminar Flamelet Model

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Journal of Thermal Science 2011年第6期20卷 534-542页

作者： Mari Mitani yuta Ito Nobuhiko Yamasaki Department of Aeronautics and Astronautics Kyushu University

The large eddy simulation (LES) using the steady laminar flamelet model is applied to a simple turbulent jet flame with 33.2% H2,22.1% CH4 and 44.7% N2 at the Reynolds number of 15,200 in order to validate the numerical methods and to investigate the flame *** the validation,the detailed experimental data of DLR-A flame is *** numerical results are in reasonable agreement with experimental results except mass fractions of minor *** the flow field,the break-down of the potential core,the vortex structure and the mixing intensity are well *** the combustion field,mass fractions of major species (H2O,CO2,CO) are well predicted *** species are well predicted *** the present study,the simulations conducted on the Cartesian and cylindrical grids with approximately 6.6× 10 5 nodes are compared.

关键词： Cartesian grid cylindrical grid validation calculation