Understanding new particle formation and their subsequent growth in the troposphere has a critical impact on our ability to predict atmospheric composition and global climate change. High pre-existing particle loadings have been thought to suppress the formation of new atmospheric aerosol particles due to high condensation and coagulation sinks. Here, based on field measurements at a mountain s...

A theory is presented of how orienting fields and steric interactions conspire against the formation of a percolating network of, in some sense, connected elongated colloidal particles in fluid dispersions. We find that the network that forms above a critical loading breaks up again at higher loadings due to interaction-induced enhancement of the particle alignment. Upon approach of the percola...

Five commercial preparative layer chromatography (PLC) plates precoated with silica gel layers 1 mm thick were compared on the basis of theoretical plate number (N) and resolution (R) by developing a test dye mixture with the same mobile phase over a constant distance with dye loadings of 1.0–5.0 μg per zone. It was found that the best performance, on the basis of N and R data, was obtained fro...

A point-force model is used to study turbulent momentum transfer in the presence of moderate mass loadings of small (relative to Kolmogorov scales), dense (relative to the carrier phase density) particles. Turbulent Couette flow is simulated via direct numerical simulation, while individual particles are tracked as Lagrangian elements interacting with the carrier phase through a momentum coupli...

Background Efficient deconstruction and bioconversion of solids at high mass loadings is necessary to produce industrially relevant titers of biofuels from lignocellulosic biomass. To date, only a few studies have investigated the effect of solids loadings on microorganisms of interest for consolidated bioprocessing. Here, the effects that various switchgrass loadings have on Clostridium thermo...

Reported here, thioester containing microparticles were designed with 40% excess thiol to enable thiol–thioester exchange facilitate the formation of cohesive films from particles. A thiol-Michael dispersion polymerization was used generate a diameter 4.0 ± 0.4 μm. The particles then swollen base at varying concentrations activate and subsequently compressed between two glass slides. Resultant ...

Recommended Citation Sawvel, Russell. "Evaluation of shaker dust collector for use in a swine farrowing barn. ii To my beloved late Mother. iii ACKNOWLEDGMENTS I would like to thank my father Earl Sawvel and Sue Nordstrom for their support, guidance, and encouragement throughout this endeavor. I would also like to thank Tom Peters for being a world class advisor and Renée Anthony for being a wo...

The accumulation of phosphorus (P) and metals is a serious concern with the continuous application of manure to agricultural soils. Solid-liquid separation of swine slurry is a promising approach to reduce P and metal loadings through application of separated liquid (SL) as a nutrient source. However, little information is available on nutrient and metal loadings with the application of SL comp...

     In this study, microspheres containing estradiol valerate were prepared by solvent evaporation method using poly (glycolide-co-lactide) (PLGA 50:50) and poly (lactide). The effect of different process variables such as polymer type, drugpolymer ratio, stirring rate, volume of internal phase and temperature of external phase on the morphology, particle size distribution, encapsulation effic...

Title of Document: STRUCTURE AND PROPERTIES OF NANOCOMPOSITES CONTAINING ANISOTROPIC NANOPARTICLES Bani Hans Cipriano, Doctor of Philosophy, 2007 Directed By: Professor Srinivasa R. Raghavan, Department of Chemical and Biomolecular Engineering This dissertation deals with polymeric materials containing dispersed anisotropic nanoparticles such as nanotubes, nanofibers, and nanoplatelets. Such po...