A5004186981- Gas Dynamics and Kinetic Theory
- Plasma Applications and Diagnostics
- Astro and Planetary Science
- Computational Fluid Dynamics and Aerodynamics
- Plasma Diagnostics and Applications
- Electrohydrodynamics and Fluid Dynamics
- Planetary Science and Exploration
- Fluid Dynamics and Turbulent Flows
- Rocket and propulsion systems research
- Energetic Materials and Combustion
- Plasma and Flow Control in Aerodynamics
- Spacecraft and Cryogenic Technologies
- Surface Modification and Superhydrophobicity
- Particle Dynamics in Fluid Flows
- Lattice Boltzmann Simulation Studies
- High-pressure geophysics and materials
- Aerosol Filtration and Electrostatic Precipitation
- Combustion and flame dynamics
- Fluid Dynamics and Vibration Analysis
- Ion-surface interactions and analysis
- Aeolian processes and effects
- Graphene research and applications
- Semiconductor materials and devices
- Isotope Analysis in Ecology
- Catalytic Processes in Materials Science
National Yang Ming Chiao Tung University
2015-2024
Taiwan Space Agency
2008-2024
Changchun University of Science and Technology
2024
Cardiff University
2023
National Center for High-Performance Computing
2010-2019
National Applied Research Laboratories
2010-2019
I-Shou University
2019
National Defense University
2019
University of Canterbury
2008
Weatherford College
2005
Context. We present an investigation of the surface properties areas on nucleus comet 67P/Churyumov-Gerasimenko.
In this study, we used an argon-based round atmospheric-pressure plasma jet (APPJ) for enhancing wound healing in streptozotocin (STZ) induced diabetic rats. The APPJ was characterized by optical emission spectroscopy. We Type 1 and 2 diabetes rats with different amounts of STZ combined normal high-fat diets, respectively. area ratio all the plasma-treated groups greatly reduced (up to 30%) compared that untreated during healing. Histological analysis revealed faster re-epithelialization,...
Egg is a regularly consumed food item. Currently, chlorinated water washing the most common practice used to disinfect eggs, but this process has negative environmental impact. A new physical technique, plasma-activated (PAW), been demonstrated possess effective antibacterial activities without long-term chemical residue. In study, air PAW was inactivate Salmonella enterica serovar Enteritidis on shell eggs. Different combinations of activation parameters, including sources (reverse osmotic...
The wakes of spheres in a still environment were studied for sphere Reynolds numbers Re the range 30-4000.The experiments consisted towed quiescent baths glycerin and water mixtures.Measurements included dye traces illuminated by laser light sheet visualization velocimetry streamwise velocities.The recirculation region on downstream side was stable symmetric < 200, unsymmetric 200 <Re 280, unstable with vortex shedding > 280.Three wake regions identified: fast-decay that observed only when...
Raisin is a popular snack and common constituent of many foods owing to its good flavor nutritional value. Conventional drying grapes can be slow energy-consuming process as their waxy surface hinders efficient moisture migration. A pretreatment that disrupts the cuticle usually applied increase rate.The application an atmospheric-pressure air plasma jet grape could effectively enhance kinetics decrease time by more than 20%. Through etching cuticle, optimally improves quality final product....
The structure of sphere wakes in a turbulent environment was measured over the following test range: Reynolds numbers from 135 to 1560, ambient turbulence intensities roughly 4%, ratios streamwise spatial integral scales diameters 11-59, and Kolmogorov length 0.080.80. At these conditions, some phenomena observed for at comparable nonturbulent environments were suppressed, like fast-decaying self-preserving wake regions; instead, while turbulent, their mean velocities scaled laminar but with...
Context. This paper describes the initial modelling of gas and dust data acquired in August September 2014 from European Space Agency's Rosetta spacecraft when it was close proximity to nucleus comet 67P/Churyumov-Gerasimenko.
Eggs are one of the most commonly consumed food items. Currently, chlorine washing is common method used to sanitize shell eggs. However, could react with organic matters form a potential carcinogen, trihalomethanes, which can have negative impact on human health. Plasma-activated water (PAW) has been demonstrated inactivate microorganisms effectively without compromising sensory qualities For this study, various amounts (250, 500, 750, or 1000 mL) PAW were generated by using two plasma...
Plasma activated water (PAW) has emerged as a viable technique for sterilization process since it contains some long-lived reactive oxygen and nitrogen species along with very short-lived but strong oxidation agents such hydroxyl radical (OH*) superoxide anion (O2 −). However, the concentrations of nitrite, nitrate, ozone are often insufficient in sterilization, or only small amount PAW can be generated. In this study, we developed state-of-the-art approach by combining microbubbles (MBs)...
In this work, we present results that simultaneously constrain the dust size distribution, dust-to-gas ratio, fraction of re-deposition, and total mass production rates for comet 67P/Churyumov-Gerasimenko. We use a 3D Direct Simulation Monte Carlo (DSMC) gas dynamics code to simulate inner coma duration Rosetta mission. The model is constrained by ROSINA/COPS data. Further, different epochs using including drag nucleus' gravity. Using advanced scattering properties these are used produce...
Measurements of the optical properties soot, emphasizing refractive indices, are reported for visible wavelengths (350–800 nm). The experiments considered soot in fuel-lean (overfire) region buoyant turbulent diffusion flames long residence time regime where relatively independent position overfire and time. Flames fueled with acetylene, propylene, ethylene, propane that were burning still air provided a range physical structure properties. included composition, density, structure,...
Bio-composite coatings, consisting of an organic matrix embedding a bioactive molecule, have been deposited by means atomizer-assisted atmospheric pressure plasma. Ethylene was chosen as the precursor matrix, while atomizer fed with water solution lysozyme. Coatings chemical composition investigated XPS, FTIR and MALDI-TOF spectroscopies, it has proved that one-step inclusion protein domains in composite coatings is successful lysozyme structure only slightly altered. The amount embedded...
The effects of the discharge voltage on formation and nature electric field transients in a symmetric, collisionless, very high frequency, capacitively coupled plasma are studied using self-consistent particle-in-cell (PIC) simulation code. At driving frequency 60 MHz 5 mTorr argon gas pressure, is varied from 10V to 150 V for fixed gap. It observed that an increase causes filamentation create multiple higher harmonics bulk plasma. Correspondingly, harmonics, up 7th harmonic, current also...
Multiple hard-to-reach spots on foods with rough surfaces (such as shrimp) limit the maximal exposure to antibacterial agents. In this study, we successfully generated plasma-activated water (PAW) using a low energy-consuming source of non-thermal atmospheric piezoelectric direct discharge plasma (PDDP) system and evaluated its effectiveness glazing agent shrimp, facilitating whole surface treatment. During generation, feeding gas mixture N2 (80%): O2 (20%) (85%): (15%) was revealed...
Because of the diurnal thermal cycle and irregular shape nucleus, gas outflow comet 67P/Churyumov–Gerasimenko could be highly anisotropic as indicated by colliminated dust jet structures on sunlit side. Based OSIRIS imaging observations outgassing effect, a simple model surface sublimation can constructed taking into account dependence solar insolation. With preliminary information time variability global production rate, sequence coma models generated at different epochs before after...
A configuration of magnetic-assisted-plasma (MAP) on helium-based atmospheric-pressure plasma jet (APPJ) with an axial magnetic-field 0.587 T is proposed, which provides good ability for killing bacteria Escherichia coli the agar surface. Optically, we confirmed that MAP increased approximately 2.4 times in electron density estimated by Stark broadening Hβ line emission, and 1.5 enhancement atomic oxygen concentration measured vacuum ultraviolet absorption spectroscopy (VUVAS). Moreover,...