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Full-Text Articles in Engineering
Continuous, Passive Liquid-Liquid Extraction And Emulsion Separation Within Microfluidic And Millifluidic Devices, Janet Tesfai
Continuous, Passive Liquid-Liquid Extraction And Emulsion Separation Within Microfluidic And Millifluidic Devices, Janet Tesfai
Master’s Theses
Liquid-liquid extraction (LLE) is a method used to separate compounds based on their relative activity in two immiscible phases. By significantly reducing the scale of liquid-liquid extraction to the micro- and milli-fluidic levels, this separation process can bemade suitable for low volume, high value materials.
Modeling Small Molecule Elution From A Hydrogel Using A Microfluidic Technique, Stephanie Evans
Modeling Small Molecule Elution From A Hydrogel Using A Microfluidic Technique, Stephanie Evans
Master’s Theses
Drug release from a fluid-contacting biomaterial is simulated using a microfluidic device with channels defined by solute-loaded hydrogel. In order to mimic a drug delivery device, a solution of poly(ethylene glycol) diacrylate (PEG-DA), solute, and photoinitiator is cured inside a microfluidic device with a channel through the center ofthe hydrogel. As water is pumped through the channel, solute diffuses out of the hydrogel and into the water. Channel sizes within the devices range from 300 µm to 1000 µm to simulate vessels within the body. The properties of the PEG hydrogel were characterizedby the extent of crosslinking, the swelling ratio, …
Investigation Of The Hygroscopic And Morphological Properties Of Atmospheric Aerosols, Laura Cook
Investigation Of The Hygroscopic And Morphological Properties Of Atmospheric Aerosols, Laura Cook
Master’s Theses
The first objective of this thesis was to examine the hygroscopic and morphological nature of various substances through the use of an Environmental Scanning Electron Microscope (ESEM). The hygroscopic growth and changes in morphology for pure-component aerosols were studied for particles greater than 2 µm in size. Hygroscopic growth was observed through changes in relative humidity (RH) and hygroscopic growth curves were created. The second objective of this thesis, the hygroscopic growth of multi-component aerosol mixtures, was studied using Hygroscopic Tandem Differential Mobility Analysis(HTDMA). The size distribution for an aerosol stream was determined before and after the stream was subjected …
An Investigation Of Two Ceramic Electron Conductors For Use In Solid Oxide Fuel Cell Anodes, Ian Hasson
An Investigation Of Two Ceramic Electron Conductors For Use In Solid Oxide Fuel Cell Anodes, Ian Hasson
Master’s Theses
Conducted work with two potential alternatives to Ni, La0.8Sr0.2Cr0.5Mn0.5 (LSCM) and Sr doped LaVO3 (LSV) to serve as the electron conductor in the anode of solid oxide fuel cells SOFCs.
Synthesis And Surface Modification Of Cdse And Cds Quantum Dots Exhibiting High Quantum Yield, Jeweliet Yost
Synthesis And Surface Modification Of Cdse And Cds Quantum Dots Exhibiting High Quantum Yield, Jeweliet Yost
Master’s Theses
The thesis investigates the effect of surface treatment with various reducing and oxidizing agents on the quantum yield (QY) of CdSe and CdS quantum dots (QDs). The QDs, as synthesized by the organometallic method, contained defect sites on their surface that trapped photons and prevented their radiative recombination, therefore resulting in adecreased QY. To passivate these defect sites and enhance the QY, the QDs were treated with various reducing and oxidizing agents, including: sodium borohydride (NaBH4), calcium hydride (CaH2), hydrazine (N2H4), benzoyl peroxide (C14H10O4), and tert-butylhydroperoxide (C4H10O2). It was hypothesized that the reducing/oxidizing agents reduced the ligands on the QD …