A5063467149- Atmospheric chemistry and aerosols
- Turbomachinery Performance and Optimization
- Fluid Dynamics and Turbulent Flows
- Urinary Tract Infections Management
- Air Quality and Health Impacts
- Combustion and flame dynamics
- Cyclone Separators and Fluid Dynamics
- Computational Fluid Dynamics and Aerodynamics
- Atmospheric Ozone and Climate
- Aerodynamics and Acoustics in Jet Flows
- Atmospheric aerosols and clouds
- Radioactive contamination and transfer
- Heat Transfer Mechanisms
- Pediatric Urology and Nephrology Studies
- Cavitation Phenomena in Pumps
- Urinary Bladder and Prostate Research
- Vehicle emissions and performance
- Hydraulic and Pneumatic Systems
- Tribology and Lubrication Engineering
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Particle Dynamics in Fluid Flows
- Plasma and Flow Control in Aerodynamics
- Reproductive tract infections research
- Refrigeration and Air Conditioning Technologies
Shimizu (Japan)
2024
Kagoshima University Hospital
2014-2024
Japan Society of Chemotherapy
2011-2024
Waseda University
2020-2023
ORCID
2019-2022
Kagoshima University
2007-2021
Japanese Urological Association
2021
Central Research Institute of Electric Power Industry
2011-2020
Nagaoka University
2018
Nagaoka University of Technology
2018
Abstract Microplastic pollution is occurring in most ecosystem, yet their presence high altitude clouds and influence on cloud formation climate change are poorly known. Here we analyzed microplastics water sampled at the summits of Japan mountains 1300–3776 m by attenuated total reflection imaging micro-Fourier transform infrared spectroscopy. We observed nine including polyethylene, polypropylene, polyethylene terephthalate, polymethyl methacrylate, polyamide 6, polycarbonate,...
Abstract. A series of accidents at the Fukushima Dai-ichi Nuclear Power Plant following Great East Japan Earthquake and tsunami 11 March 2011 resulted in release radioactive materials to ocean by two major pathways: direct from accident site atmospheric deposition. 1 yr, regional-scale simulation 137Cs activity offshore was carried out, sources radioactivity being release, deposition, inflow deposited into deposition outside domain model. Direct releases were estimated for yr after comparing...
Abstract. Acidifying species in precipitation can have severe impacts on ecosystems. The chemical composition of is directly related to the amount precipitation; accordingly, it difficult identify long-term variation concentrations. ratio nitrate (NO3−) non-sea-salt sulfate (nss-SO42−) concentration an equivalent basis (hereinafter, Ratio) a useful index investigate relative contributions these acidifying species. To record over East Asia, region with highest emissions worldwide, we compiled...
The inter-comparison of regional air quality models is an effective way to understand uncertainty in ambient pollutant concentrations simulated using various model configurations, as well find ways improve performance. Based on the outcomes and experiences Japanese projects thus far, a new project called Japan’s study for reference modeling (J-STREAM) has begun. objective J-STREAM establish source apportionment strategy making suppress secondary pollutants including PM2.5 photochemical ozone...
Tabled 1Contents1.Introduction7342.Urinary tract infections7342.1.Cystitis7342.2.Pyelonephritis7372.3.Urosepsis7402.4.Cystitis in dialysis patients7412.5.Asymptomatic bacteriuria7422.6.Catheter-related urinary infection7432.7.Urinary infection children7443.Male genital infection7463.1.Acute bacterial prostatitis7463.2.Acute epididymitis747References748 Open table a new tab
Abstract Emission source contributions of tropospheric ozone (O 3 ) were comprehensively investigated by using the higher‐order decoupled direct method (HDDM) for sensitivity analysis and apportionment technology (OSAT) mass balance in comprehensive air‐quality model with extensions (CAMx). The response O to emissions reductions at various levels mainland China, Korea, Japan estimated compared results calculated brute force (BFM) where one parameter is varied a time. Emissions assessed three...
Improvement of air quality models is required so that they can be utilized to design effective control strategies for fine particulate matter (PM2.5). The Community Multiscale Air Quality modeling system was applied the Greater Tokyo Area Japan in winter 2010 and summer 2011. model results were compared with observed concentrations PM2.5 sulfate (SO42-), nitrate (NO3−) ammonium, gaseous nitric acid (HNO3) ammonia (NH3). approximately reproduced SO42− concentration, but clearly overestimated...
We refined the aqueous-phase sulfate (SO42−) production in state-of-the-art Community Multiscale Air Quality (CMAQ) model during Japanese inter-comparison project, known as Japan’s Study for Reference Modeling (J-STREAM). In Japan, SO42− is major component of PM2.5, and CMAQ reproduces observed seasonal variation with summer maxima winter minima. However, underestimates concentration over Japan. Based on a review current modeling system, we identified possible reason being inadequate by Fe-...
Abstract The atmospheric input of anthropogenic total reactive oxygenated nitrogen (NO y ) to ocean regions in East Asia during 2002–2004 was revisited with an updated regional chemical transport model and the latest emissions inventory. treats both fine‐ coarse‐mode nitrate 3 − ). Coarse‐mode NO is produced by reaction nitric acid (HNO sea salt particles. modeling system reproduced concentration wet deposition amount quantitatively compared observations. fraction also well captured. amounts...
The pressure recovery of a low-solidity circular cascade diffuser centrifugal blower was predicted by simple method combining theory diffusers and that vaneless it compared with series experiments. Furthermore the stall limit studied. In order to improve performance further, tandem-cascade were tested. these diffusers, front row designed for small flow rate while rear large so tandem would accomplish good in wide range rate. Experimental results showed operating as excellent at somewhat better than
An increasing trend in ground‐level ozone (O 3 ) concentrations has recently been recognized Japan, although of precursors, nitrogen oxides (NOx), volatile organic compounds (VOCs) and nonmethane hydrocarbons (NMHCs) have decreased. In this paper, the relationship between meteorological factors (temperature wind speed) summer over central Kanto area Japan was examined using both statistical analyses numerical models. The Fifth‐Generation NCAR/Penn State Mesoscale Model (MM5) Community...
We investigated the influence of meteorological factors that affect ozone in summer using both measurement analysis and numerical simulation. The results show there is a close relationship between changes conditions variations concentrations over central Kanto area. In summer, up to 84% long-term peak may be accounted for by seasonally averaged daily maximum temperatures wind speeds. episodes region are dominated three major patterns, which Patterns I II regular summertime pressure patterns...
Appropriate policies to improve air quality by reducing anthropogenic emissions are urgently needed. This is typified the particulate matter (PM) problem and it well known that one type of PM, sulfate aerosol (SO42-), has a large-scale impact due long range transport. In this study we evaluate source-receptor relationships SO42- over East Asia for 2005, when sulfur dioxide (SO2) from China peaked. SO2 have been declining since 2005-2006, so possible maximum Chinese contributions evaluated....
Abstract Since the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident in March 2011, atmospheric simulation models have improved our understanding of behavior radionuclides. Model intercomparisons provide valuable and useful information for evaluating validity variability individual model results. In this study, we compared results seven transport used to simulate 137 Cs released from FDNPP atmosphere. All analysis had been submitted a intercomparison project Science Council Japan (2014,...