A5084412499- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Particle physics theoretical and experimental studies
- Metal Forming Simulation Techniques
- High-Energy Particle Collisions Research
- Fuel Cells and Related Materials
- Manufacturing Process and Optimization
- Hydraulic and Pneumatic Systems
- Metallurgy and Material Forming
- Microstructure and Mechanical Properties of Steels
- Tribology and Lubrication Engineering
- Particle Detector Development and Performance
- Engineering Applied Research
- Atmospheric aerosols and clouds
- Advanced Memory and Neural Computing
- Microstructure and mechanical properties
- Laser and Thermal Forming Techniques
- Water Systems and Optimization
- Dark Matter and Cosmic Phenomena
- Maritime Transport Emissions and Efficiency
- Air Quality Monitoring and Forecasting
- Electrocatalysts for Energy Conversion
- Refrigeration and Air Conditioning Technologies
- Quantum Chromodynamics and Particle Interactions
Pusan National University
2005-2024
University of Alabama in Huntsville
2008
Interaction cross sections and charged pion spectra in p+C interactions at 31 GeV/c were measured with the large acceptance NA61/SHINE spectrometer CERN SPS. These data are required to improve predictions of neutrino flux for T2K long baseline oscillation experiment Japan. A set collected during first run 2007 an isotropic graphite target a thickness 4% nuclear interaction length was used analysis. The inelastic production 257.2 +- 1.9 8.9 mb 229.3 9.0 mb, respectively. Inclusive negatively...
Spectra of positively charged kaons in p+C interactions at 31 GeV/c were measured with the NA61/SHINE spectrometer CERN SPS. The analysis is based on full set data collected 2007 a graphite target thickness 4% nuclear interaction length. Interaction cross sections and pion spectra already using same data. These new measurements combination published ones are required to improve predictions neutrino flux for T2K long baseline oscillation experiment Japan. In particular, knowledge kaon...
As part of the Transport and Chemical Evolution over Pacific (TRACE‐P) mission, ozonesondes were used to make ozone vertical profile measurements at nine locations in North Pacific. At most sites there is a multiyear record observations. From western (Hong Kong; Taipei; Jeju Island, Korea; Naha, Kagoshima, Tsukuba, Sapporo, Japan), site central (Hilo, Hawaii), on west coast United States (Trinidad Head, California) both seasonal event specific picture tropospheric emerges. Ozone profiles...
Abstract. The accuracy of total ozone computed from the Smithsonian Astrophysical Observatory (SAO) optimal estimation (OE) profile algorithm (SOE) applied to Ozone Monitoring Instrument (OMI) is assessed through comparisons with ground-based Brewer spectrometer measurements 2005 2008. We also compare three OMI operational products, derived NASA Total Mapping Spectrometer (TOMS) algorithm, KNMI (Royal Netherlands Meteorological Institute) differential optical absorption spectroscopy (DOAS)...
A gerotor pump is suitable for oil hydraulics of machine tools, automotive engines, compressors, construction, and other various applications. In particular, the an essential element that feeds lubricant in engine. The main components are two rotors. Usually, outer one characterized by lobes with a circular shape, while inner rotor profile determined as conjugate to other. this study, design optimization has been carried out determine parameters maximize specific flow rate minimize...
Abstract. Most previous evaluations of satellite performance relied on pair wise comparisons with limited spatial and temporal coverage surface-based measurements such as soundings in-situ measurements. Especially, validation HCHO is very difficult because ground-based are extremely sparse. We use a new scientific approach, statistical analyses empirical orthogonal function (EOF) singular value decomposition (SVD), to provide three-dimensional results global picture over long measurement...
Abstract. Using TOMS total-ozone measurements over high-altitude cloud locations and nearby paired clear locations, we describe the Clear-Cloudy Pairs (CCP) method for deriving tropical tropospheric ozone. The clouds are identified by measured 380 nm reflectivities greater than 80% Temperature Humidity InfraRed (THIR) cloud-top pressures less 200 hPa. To account without clouds, apply a zonal sine fitting to stratospheric ozone derived from available cloudy points, resulting in wave-one...
Dynamics and state filling of the resonantly excited ground (1se-1S3∕2h) in a strongly confined CdSe quantum dot were investigated by degenerate pump-probe measurements. With increasing electron-hole (e-h) pairs per bleaching observed with ∼2.7 e-h pairs. While radiative recombination was dominant small number (⪡1), Auger-type became significant near (∼2.7). This result suggests that, for resonant excitation, either cold electron or hole is scattered into higher-energy states ZnS shell via...
Abstract. This study investigates anomalous ozone distributions over cloudy areas in Nimbus-7 (N7) and Earth-Probe (EP) TOMS version-7 data analyzes the causes for anomaly formation. A 5°-longitude by 5°-latitude region is defined to contain a Positive Ozone Anomaly (POA) or Negative (NOA) if correlation coefficient between total reflectivity > 0.5 < -0.5. The average fractions of anomalies among all cloud fields are 31.8 ± 7.7% 35.8 N7 EP data, respectively. Some caused retrieval...
Background: Using a push‐button device, we investigated whether visual or auditory response time would increase with increasing sedation, and assessed the responsiveness score of Observer's Assessment Alertness/Sedation (OAA/S) scale at point first loss to stimulation. Methods: In experiment 1 applied stimulation 19 patients as propofol target plasma concentration (C PT ) was increased determine be lost first. Thirty were each then infused propofol, starting C 0.3 µg ml −1 by increments 0.2...
The purpose of this study is to predict the rolling-orientation and temperature dependent forming limit diagrams (FLDs) tailor rolled blank (TRB) in hot stamping process. rolling orientation defined by angle major loading direction influences formability TRB. When take places at elevated temperature, TRB greatly affected not only but also inhomogeneous temperature. In study, thickness ratio 1.43(1.5/1.05 mm) was employed evaluate using stretch test which performed according various...
Dynamic responses of polymer electrolyte membrane fuel cells (PEMFC) were analyzed under varying loads to understand the performance PEMFCs for ship applications. Experiments employing single conducted a static load with constant current 6.64 A and dynamic at ramp rate 2.5%/s 5.0%/s, representing simplified operation condition. Under load, voltage drop was 0.054 V 1.00 A/cm2 dominant below 0.40 A/cm2. In contrast, (5.0%/s rate), 0.061 above A/cm2, similar behavior observed 2.5%/s. To compare...
A controversial dispute in space‐based tropospheric ozone remote sensing is the puzzling discrepancy spatiotemporal distribution between residual‐based satellite observations and biomass‐burning activity tropics during boreal winter. This study focuses on evaluation analyses of two products determined from Earth Probe TOMS measurements: Convective Cloud Differential measurements (CCD) Scan Angle (SAM). Rather than using typical station‐to‐station inter‐comparison with sounding measurements,...