A5101756394- Fluid Dynamics and Turbulent Flows
- Heat Transfer Mechanisms
- Heat transfer and supercritical fluids
- Fluid Dynamics and Vibration Analysis
- Ecology and Vegetation Dynamics Studies
- Nuclear reactor physics and engineering
- Heat Transfer and Optimization
- Fuel Cells and Related Materials
- Cyclone Separators and Fluid Dynamics
- Nuclear Engineering Thermal-Hydraulics
- Rangeland and Wildlife Management
- Electrocatalysts for Energy Conversion
- Nanofluid Flow and Heat Transfer
- Land Use and Ecosystem Services
- Particle Dynamics in Fluid Flows
- Engineering Applied Research
- Botany, Ecology, and Taxonomy Studies
- Peatlands and Wetlands Ecology
- Advanced Thermodynamics and Statistical Mechanics
- Combustion and flame dynamics
- Environmental Conservation and Management
- Advanced Combustion Engine Technologies
- Wind and Air Flow Studies
- Fluid Dynamics and Mixing
- Cardiac pacing and defibrillation studies
Seoul St. Mary's Hospital
2008-2023
Purdue University Northwest
2004-2023
Western University of Health Sciences
2022
Catholic University of Korea
2008-2020
Korea University
2002-2015
Sunchon National University
2012
Korea Institute of Machinery and Materials
2010
Abstract The discipline of restoration ecology has grown remarkably in the past decades, providing new ideas and opportunities for conserving biological diversity, managing ecosystems, testing ecological theories. On other side, its past‐oriented, static, idealistic approach been criticized subjectivity determining goals, inapplicability to dynamic inability restoring certain irreversible losses. Moreover, unpredictable sustainability restored which were modeled after historical fidelity,...
Since its emergence in the past decades, restoration ecology has demonstrated an astounding growth as a new discipline of applied science.At same time, this young been criticized for retrospective goals largely based on past, fragmented approach, and idealistic goals, which do not relate to real world context.Restoration with past-focused, idealistic, and/or ad hoc may work future because ecosystem that is restored environment likely be sustainable changing future, simple recomposition...
Fine-grid computations are reported of turbulent flow through a square sectioned U-bend corresponding to that for which Chang et al. (1983a) have provided detailed experimental data. A sequence modeling refinements is introduced: the replacement wall functions by fine mesh across sublayer; abandonment PSL approximation (in pressure variations near-wall sublayer neglected); and introduction an algebraic second-moment (ASM) closure in place usual k–ε eddy-viscosity model. Each refinement shown...
This study describes the development of near-wall second moment turbulent heat flux model and its application to various flows with transfer test performance model. The models for fluxes based on elliptic concept are proposed closely linked blending model, which is used prediction Reynolds stresses. new satisfy balance between viscous diffusion, dissipation pressure–temperature gradient correlation, also have characteristics approaching their respective conventional high number far away from...
Abstract Ecological restoration is set to play a key role in mitigating biodiversity loss. While many restorationists worry about what do and call rapidly changing ecosystems (no‐analog, novel, or other terms), ecologists managers some parts of the world have avoided these controversies proceeded with developing implementing innovative projects. We discuss examples from South Korea, including Cheonggyecheon river project Seoul new National Institute Ecology, which combines scientific...
Abstract We investigated the role of artificially introduced Panicum virgatum (switch grass) on sequential natural revegetation 15‐ and 35‐year‐old tailings in Adirondack region northern New York. Switch grass covered approximately 48% 15‐year‐old Chaumont Tailings. Establishment switch‐grass stands improved fertility site by adding organic matter, raising pH, elevating cation exchange capacity concentrations major nutrients (N, P, K). Switch‐grass also aided initial recruitment such pioneer...
Abstract We investigated the effects of prescribed fire, herbicide treatment, and sod removal on eradication exotic grasses establishment native plant species in 24 experimental restoration plots three razed residential sites within boundary Indiana Dunes National Lakeshore. During 1992–1995, treatment decreased combined cover Poa pratensis (Kentucky blue grass) Agropyron repens (quackgrass) significantly (from 82% to 13%, 85% 8%, respectively), whereas fire did not suppress such lawn...
The mixing length theory is extended to close the relevant momentum equations for two-phase turbulent flow at a first-order closure level. It assumed that mass fraction of particles on order unity, particle size so small are fully suspended in primary fluid, and relaxation time scale sufficiently compared with energy containing eddies responsive fluctuating field. Bulk motion treated as secondary fluid its own virtual viscosity. proposed applied developed gas-solid pipe which be uniformly...
We investigated the processes of oak-savanna redevelopment in an abandoned sand mine site Indiana Dunes National Lakeshore. Our Detrended Correspondence Analysis (DCA) revealed a divergence vegetation between prairie and woodland portions study area. Eastern cottonwood (Populus deltoides) black oak (Quercus velutina) dominated canopy. The shallow water table (0.90–1.35 m below ground surface) appeared to support formation tree prairie, with deeper (2.09–2.62 m), was sparsely vegetated by...
Background and Objectives: Cavotricuspid isthmus (CTI) block is easily achieved, prophylactic ablation can be performed during atrial fibrillation (AF) ablation.However, the previous study was too small short-term to clarify efficacy of this block.Methods: Patients who underwent catheter for paroxysmal AF were enrolled, patients had or induced flutter (AFL) excluded.We randomly assigned 366 pulmonary vein isolation (PVI) only CTI (PVI vs. PVI+CTI).Results: There no significant difference in...
Miniature Joule‐Thomson refrigerators have been widely used for rapid cooling of infrared detectors, probes cryosurgery, thermal cameras, and missile homing head guidance systems, due to their special features simple configuration, compact structure cool‐down characteristics. The time, the temperature at cold end, running time gas consumption are important indicators performance refrigerator. In this study, a simplified one‐dimensional model momentum energy transport recuperative heat...