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 52 for “"applied fields"”.
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The effect of applied fields on crystallisation
… a background on crystallisation, the effects of applied fields and summarises the techniques used for characterisation and analysis. The study of applied magnetic fields was carried out on three crystallising systems (a) sucrose, (b) lactose and (c) cocoa butter. Both sucrose and lactose were …
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Colloidal interactions under applied fields in confined geometries
Includes bibliographical references (pages 61-64).
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Moessbauer Study of Reduced Putidaredoxin in Zero and Intermediate Applied Fields
An ('57)Fe Mossbauer investigation of the reduced (S = 1/2) active center of the redox and effector protein, putidaredoxin, is reported. Putidaredoxin is a prototype of a 2Fe-2S protein; it functions as an electron shuttle in a bacterial enzyme system. Several 2Fe-2S proteins, including …
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Mössbauer study of reduced putidaredoxin in zero and intermediate applied fields
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-08T18:00:38Z No. of bitstreams: 1 1983_valentine.pdf: 4470175 bytes, checksum: 271832f34e34978d84af9a04202dd08d (MD5)
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Effect of applied fields on the optical properties of color centers
… line shape when the external perturbation is appliedo The changes in the zeroth,\) firstj) second» and third moments may be computed quite simply., Although this does not give the detailed change in the line shape, it pro= videa a precise method for evaluating parameters of the center1 such as …
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Impact of Manure Management Practices on the Environmental Fate of Antibiotics in Manure-Applied Fields
… antibiotic resistance genes from animal manure applied to soil as fertilizer are now among the most concerned contaminants in soil. The widespread use of antibiotics in livestock might amplify the risk of developing antibiotic resistance, causing once treatable diseases to turn deadly. The World …
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The effect of applied and magnetic fields on the crystallisation of hydrocarbons
… thesis provides a background on the effects of applied and magnetic fields on crystallisation, and summarises the analytical techniques employed for characterisation and analysis. The study of applied fields was carried out on the crystallisation of one main system-solid nonadecane. This was …
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Percolation phenomena in amorphous iron-nickel alloys
… data, covering a wide range of temperatures and applied fields, are reported for the series of amorphous alloys (FepNi1_p)80P20. The iron-rich alloys are shown to be good ferromagnets, with the expected ferromagnetic critical behavior. Nickel, however, serves as a paramagnetic diluent. The …
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Convective Heat Transfer in Quasi-one-dimensional Magnetic Fluid in Horizontal Field and Temperature Gradients
… transfer in a magnetic fluid in both zero and applied magnetic fields. The natural convection is observed in a quasi-one dimensional magnetic fluid in a horizontal temperature gradient. The horizontal non-homogeneous magnetic fields were applied across the sample cell either parallel or …
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Inverse problems in elliptic charged-particle beams
… regions with analytic prescriptions for the applied electric and magnetic fields required to maintain a laminar flow profile for particles within the beam. Numerical phase-space evolution and 3D simulations confirm that self-consistent laminar flow profiles are maintained by the …
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Simulation of magnetohydrodynamics turbulence with application to plasma-assisted supersonic combustion
… model which models the interaction of externally applied fields in conductive medium. Third, the development of models necessary for studying supersonic combustion applications with plasma-assistance such the extension of chemical kinetics models to extremely high temperature and non-equilibrium …
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Characterization of ferromagnetic saturation at 4.2K of selected bulk rare earth metals for compact high-field superconducting cyclotrons
… and induced magnetic field measured at various applied fields. Data was obtained with Hall sensors mounted at the tips of the cylinders, and a powerful analytical calculation was derived to allow estimation of the saturation magnetization from this surface data. If the metal is saturated in a …
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Manipulation of bacteria using three dimensional insulator based dielectrophoresis
… trapping of microparticles and bacteria at low applied fields with minimal thermal shock on the particles due to Joule heating effects. The dielectric properties of a range of bacteria, as well as polystyrene beads are examined. The impact of these results on the development of microbial fuel …
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Development, characterization and applications of magnetorheological fluid based "smart" materials on the macro-to-micro scale
… have potential applications in numerous fields ranging from adaptive energy absorption, automotive crash protection to microfluidic valves, mixers and separation devices. A series of stable magnetorheological (MR) fluids have been systematically characterized under steady shearing, creep …
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Resistivity and specific heat measurements near phase transitions in metals
… from the c-axis. The anomalies are suppressed in applied magnetic fields. A model for the temperature dependence of the anisotropy energy is used to describe this tilting transition. Near the Curie temperature of 29l °K, measurements of the specific heat and a-axis resistivity derivative of …
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Parameter Estimation for Delay Differential Equations: A New Galerkin Approximation Framework
… distributed delays are widely used in many applied fields, including mathematical biology, climate science, and engineering. These equations contain free parameters and integral kernels that must be optimized to fit the dynamics of the physical systems they model. In this thesis, we present …
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Non-metallic cold-cathode electron emission from composite metal-insulator microstructures
… various experimental conditions, e.g. pulsed-fields, gas environment etc. This study has shown that, for applied fields of 20MVm^-1, thin dielectric (750AA) and composite metal-insulator (MI) overlayers result in a dramatic increase in the total number of emission sites (typically 30cm^-2), …
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Shape Evolution of Nanostructures by Thermal and Ion Beam Processing
… are effected and can thereby be controlled by applied fields and forces (guided or driven evolution). With these prospects and challenges at hand, formation and shape transformation of single-crystalline nanostructures due to the system-inherent capillary force in combination with external …
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Investigating structure and chemistry in functional ferroelectric ceramics via transmission electron microscopy
… The flexibility of domain walls under externally applied fields, in tandem with their minute size, opens the door for a whole new design of miniaturised, reconfigurable electronics, in which electrical interconnects, or even devices themselves, are constructed from conducting domain walls. …
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Data-driven Representations in Brain Science: Modelling Approaches in Gene Expression and Neuroimaging Domains
… brain data across the specific needs in the applied fields of these two scales. Specifically, for Graph-Dimensional data two approaches will be developed. Firstly, specific and shared genetic profiles that can be generalisable to external datasets will be extracted by applying multilayer …
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