Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 212 for “"dispersing"”.
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Effect of structure of dispersing agent on efficiency of wet grinding
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1936.
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Signals Regulating Organelle Transport in Melanophores
… in cells aggregating pigment compared to cells dispersing pigment. Furthermore, levels of myosin V on melanosomes are higher in cells dispersing pigment. Therefore the association of myosin V with melanosomes correlates with its dephosphorylation. Immunoprecipitation of cytoplasmic dynein showed …
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Seasonal dispersal tendencies of sylvan deer mice (peromyscus maniculatus) with montana rangelands
… of 22,654 times. We documented a total of 980 dispersing individuals over three years. Our results demonstrated no significant seasonal differences in the number of dispersing individuals. However, we did find a positive correlation between number of dispersing individuals and number of …
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Seasonal dispersal tendencies of sylvan deer mice (peromyscus maniculatus) with montana rangelands
… of 22,654 times. We documented a total of 980 dispersing individuals over three years. Our results demonstrated no significant seasonal differences in the number of dispersing individuals. However, we did find a positive correlation between number of dispersing individuals and number of …
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Seasonal Movements and Behavior of Ring-Necked Pheasants in Eastern South Dakota
… and weed patches to feed. Numbers of birds dispersing from the study area in spring varied each of the years, but 60 to 70 remained there during the two reproductive seasons. Adult cocks traveled less than 1/4 mile when dispersing-and adult hens moved less than 1/2 mile. Movements by two …
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Size reduction and polymer encapsulation of carbon black in gas-expanded solvents
… a solution of non-aqueous solvent and dissolved dispersing resin. Size reduction is achieved within the apparatus via the grinding action of 1.2 mm spherical ceramic media contacting the micron-size pigment particles. As milling progresses, high-pressure CO₂ is slowly introduced to the vessel; …
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Female Dispersal and Inbreeding in the Red-cockaded Woodpecker
… constraints. Estimates of mortality for non-dispersing and dispersing breeding females were 24 and 59 percent per year, respectively-rare evidence of the cost of breeding dispersal. Significant costs of close inbreeding were found. Closely related pairs (kinship coefficient greater than 0.1) …
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Exotic Bird Invasion Into Forests of Hawaii: Demography, Competition, and Seed Dispersal
… Furthermore, introduced birds are effectively dispersing native seeds from native forest into adjacent sites currently dominated by non-native plants, allowing native forest to reestablish. These studies lay the foundation for understanding the full complexity and ramifications of the ecology …
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An experimental study of the effects of some commercial admixtures on the properties of concrete
… standard. In the hardened state, the cement dispersing agent (normal set) and the accelerator produced the greatest increase in the compressive strengths at all ages of testing as compared with their standard. It is further revealed that the accelerator imparted the greatest influence when …
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Fundamental Studies of Various Poly(L-lactide)/clay Nanocomposite Systems by in-situ Polymerization
… must be improved. This can be achieved by dispersing inorganic fillers into the polymer matrix, thus forming an exfoliated polymer nanocomposite. In this study, in situ polymerizations ofpoly(L-lactide)-clay nanocomposites were conducted using various montmorillonite organoclays (PLLA-MMT). …
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Spatial and temporal dynamics of plants colonizing species-poor hedgerows
… dispersal strategies and species successfully dispersing into adjoining species-poor recent hedgerows were those able to reproduce vegetatively. The seed bank analysis showed that species of disturbed landscapes were dispersing into the woodlands, but were not successfully colonizing. Woody …
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Topics in many-body physics
… due to two-dimensionality, namely linearly dispersing excitations of ""bound"" holes, the system remains in a Fermi liquid state. The quasi-particles are both long lived and weakly interacting. We also provide a microscopic calculation of the Fermi liquid parameters which determine the …
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The dispersal paradox : can lowland granivorous mice also disperse the seeds they devour?
… found that the Restio may be dependent on seed-dispersing rodents, although this mutualism is not so important in fragmented habitats.
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Colloidal stability of magnetic nanoparticles in molten salts
… and other high temperature engineering systems. Dispersing nanoparticles in molten salts can enhance the heat transfer capabilities of the fluid. High temperature and high ionicity of the medium make it difficult to make a colloidally stable dispersion of nanoparticles in molten salts. The …
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The fabrication of carbon-fiber composites by aqueous suspension prepregging with larc-tpi and peek
… in this report. The need and importance of a dispersing and binding agent and its interactions with the composite matrix are assessed. A time-temperature-pressure consolidation cycle was designed for PEEK prepreg. Two thermoplastic polymers were studied : LaRC-TPI, provided by Mitsui Toatsu …
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Should I stay or should I go? Hormonal and demographic correlates of natal dispersal in a population of wild vervet monkeys
… studied due to the difficulty of following dispersing individuals. Even fewer studies have attempted to explore the hormonal correlates of dispersal owing to the difficulties of obtaining sufficient faecal samples of the same individuals before, during and after a successful dispersal. In …
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Assessment of shaped film cooling holes at high density ratios for gas turbine cooling using S-PIV and PSP.
… clearly show that film cooling is enhanced by dispersing coolant from racetrack shaped inlets and incorporating anti-vortex designs within a laidback, fanshaped hole.
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Preparation of nano and Angstrom sized cobalt ensembles and their performance in the Fischer-Tropsch synthesis
… the mass specific active surface area by dispersing the active material on an inert carrier. Recent studies on nano sized iron, cobalt, ruthenium and rhodium crystallites indicate that below a certain crystallite size they display a decrease in surface specific activity. This work aims to …
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The design of a thiokol plant
… Magnesium chloride was unsatisfactory as a dispersing agent using the polysulfide as prepared, but ethyl alcohol gave satisfactory results. Studies of dilution yielded products of high values ranging from 91 to 75. Large amounts of freshly precipitated were satisfactory as dispersing agents …
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