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 25 for “"mechanical treatment"”.
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Vegetation response of a Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) community to 6 mechanical treatments in Rich County, Utah
… for wildlife habitat and community diversity. Mechanical treatments have the ability to retain shrub and herbaceous components, while improving diversity within degraded sagebrush communities. This study evaluated the effects of 6 mechanical treatments and revegetation of a Wyoming big …
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The effect of microalloying on the morphology of austenite during hot working.
Studies have been made of the effects of thermo-mechanical treatment variables on the recrystallization of austenite, the transformation of austenite and precipitation strengthening in C-Hn steel containing niobium, niobium plus vanadium, vanadium and vanadium plus nitrogen. The amounts of niobium …
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Formation, characterization, and chemical reactions of free radicals in lignin
Free radicals are produced in lignin during mechanical treatment and irradiation with light of various wavelengths. During mechanical treatment, the lignin macromolecule is degraded severely as revealed by ESR and viscosity measurements. Several types of mechano-radicals are produced in lignin …
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Development and evaluation of linerboard made from soda-anthraquinone treated coconut coir fiber for protective packaging
… characterization, soda-AQ pulping optimization, mechanical treatment (beating) and blending process of the coir fiber were investigated to optimize the characteristics of this linerboard. The coir fibers were characterized using chemical and morphological analyses, to assess the fiber’s potential …
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Investigations of electron scattering mechanisms at the silicon-silicon dioxide interface
… classically by Ham and Mattis and quantum mechanically by Stern and Howard for the (110) surface of silicon, has been observed.. The quantum mechanical treatment has been extended to finite temperatures for comparison with experiment. The conclusion is that the effective mass approximation …
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Surface Charge Regulation Effects on Fluidic Nanoscale Systems
… theory of uids which uses a statistical mechanical treatment of the uid that includes nite-size e ects. Chemical equilibria at the interface is accounted for by coupling these methods with charge regulating theory. The e ects of charge regulation lead to several novel predictions about …
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Excited State Chemical Dynamics: Beyond the Born-Oppenheimer Approximation
… molecular Hamiltonian and associated quantum mechanical equation of motion. This common formalism, from which all of the approximate methods emerge, is rst presented in detail. The working equations for these methods, which are found to naturally arise from successive approximations to the …
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Responses Of The Florida Mouse (podomys Floridanus) To Habitat Management
… mouse to land management practices such as mechanical treatment and prescribed fires is poorly documented. This research examined the population responses of Florida mice on three public lands in central Florida, namely, Bullfrog Creek Mitigation Park in Hillsborough County, Split Oak …
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The Role of Disorder in the Charge Dissociation and Recombination Processes of Organic Photovoltaic Materials
… operation. In this work, we use a fully quantum mechanical model of the electronic states of a bulk-heterojunction interface to investigate how presence of disorder in OPVs affects the recombination of triplet charge-transfer states and influences the free energy of an electron as it separates …
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Development of non-born-Oppenheimer methods for ground and excited state molecular properties
… multicomponent approach that allows the quantum mechanical treatment of electrons and specified protons on the same quantum mechanical level. NEO does not make the Born-Oppenheimber approximation between electrons and select protons, and therefore has great potential in applications to …
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Atomistic quantum dynamics: implementation and applications of the quantum-classical path integral method
… can be hampered by the need for both a quantum mechanical treatment for the reactive degrees of freedom, along with a classical description of the environment, since it is typically too complex for quantum dynamical simulation to be feasible. To address these difficulties, a number of mixed …
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Design and Optimization of Process Parameters in Bio-Gas Production Systems
… uses biomass as a renewable energy source. Pre-treatment is the first stage of the AD process. The main goal of pre-treatment is to change the biomass properties in order to prepare lignocelluloses for enzymatic attack; which in turn enhances biogas production and anaerobic digestion …
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Studying Particle and Energy Transport using Nuclear and X-ray Diagnostics for Discovery Science and Inertial Confinement Fusion
… experiments. The data agreed with quantum mechanical treatment of ion-electron energy-exchange cross section, which includes the diffraction of electrons [1]. In the second experiment, the mixing between the glass shell and D³He fuel due to plasma inter-diffusion was explored. This …
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Computational approaches to fragment based screening
… of fragments that makes them amenable to quantum mechanical treatment, has created new opportunities for including polarization, anisotropic electrostatics and realistic repulsion potentials in docking. We have shown that polarization implemented as induced charges can offer in the region of a …
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Hydrogen-Induced Transformations in Metastable High Entropy Alloys
… for tuning composition and corresponding mechanical behavior. In particular, metastable alloys—those that exhibit a mechanically-induced austenite-to-martensite phase transformation—pose an interesting opportunity for HE resistance, where the toughening mechanisms associated with this …
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The Recovery of Protein from Egg Yolk Protein Extraction Granule Byproduct
… broken by alterations in pH, ionic strength, and mechanical treatments. This thesis project seeks to find potential uses for the egg yolk by product after the removal of the livetin fraction by means of further fractionation with mechanical treatment (filtration). Two variables were tested to …
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RE-IMAGINING SPACES IN A PANDEMIC RESPONSE : THE SCHOOL INFIRMARY AND THE STADIUM CREMATORIUM
… perception of respect for the dead through ‘mechanical’ treatment of the bodies.
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Cellulose nanocrystals as a candidate for solar geoengineering
… is widely understood that surface chemistry and mechanical treatment can impact aggregation in liquid suspensions of CNCs. A detailed analysis of the morphology of aerosolised CNCs was performed, and related to the behaviour of the initial CNC suspensions. These results indicate that the …
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Characterization and Modeling of Low Frequency Noise and Dielectric Traps in Scaled MOSFET Devices
… of vertical dopant profile.We develop a quantum mechanical treatment of low-frequency noise to extend the ``unified'' noise model and includes remote Coulomb scattering and surface roughness - the latter is a new consideration in the theory. Our experimental work focuses on scaled NMOS devices …
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