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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 110 for “"microwaves"”.
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Tensorial Impedance Surfaces for Manipulating Microwaves
Metasurfaces average boundary conditions are often described with a "surface impedance". Tensorial impedance metasurfaces are surfaces where, due to anisotropy, the impedance becomes a 2nd rank tensor. This results in a boundary condition that has greater control over the surface fields than scalar …
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Molecular simulations of the interaction of microwaves with fluids
The interaction of electromagnetic radiation with matter has led to a large number of interesting applications. The propagation of electromagnetic waves within materials is described by Maxwell's equations. However, the fundamental understanding of the causes of the response of the material, …
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The Effect of Microwaves on Aqueous Corrosion of Glass
… been fully investigated. It was suspected that microwaves may alter or accelerate the aqueous corrosion processes that occur in glass which contribute to migration into foods or other materials. Lithium disilicate (Li2O-2SiO2) and commercial soda-lime glass were corroded using both conventional …
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Modelling and Measurement of the Diffraction of Microwaves by Buildings
Much of the recent growth in microwave communication systems has occurred within urban areas. Private satellite and point to point microwave services have meant that microwave antennas are a common site on the roofs of offices. With the increase in system density comes the increase in the …
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Modelling and Measurement of the Scatter of Microwaves by Buildings
The growing usage and demand for microwave communications has led to the increase in system density, particularly in urban areas, and consequently to the increase in the probability of mutual interference between systems sharing the same frequency band. Satellite and point to point microwave …
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Nonlinear/electromagnetic co-simulation of microwaves and millimeter-waves links
The Ph.D. thesis describes the simulations of different microwave links from the transmitter to the receiver intermediate-frequency ports, by means of a rigorous circuit-level nonlinear analysis approach coupled with the electromagnetic characterization of the transmitter and receiver front ends. …
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Immunological Effects of Microwaves, Ultrasound, and Hyperthermia: B-Lymphocyte Capping
Embargo set by: Seth Robbins for item 69413 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs
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Interaction of Microwaves in Gaseous Plasmas Immersed in Magnetic Fields
Made available in DSpace on 2014-12-04T21:03:32Z (GMT). No. of bitstreams: 1 6206197.pdf: 6907733 bytes, checksum: 6cfcabf347353885089382e3100808e4 (MD5) Previous issue date: 1962
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Multiple scattering of microwaves from soil surface and vegetation canopies
A multiple scattering radiative transfer model is developed for use in global retrieval algorithms of microwave geophysical parameters. This attempts to both improve soil moisture and vegetation attenuation and scattering parameter retrievals under moderate to dense canopy covers and capture the …
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Synergistic Combination of Microwaves and Acoustic Signals: Towards Improved Breast Imaging
Microwave-based breast imaging techniques offer the convenience of frequently-repeated scans involving no breast compression, non-ionizing radiation, inexpensive scan costs, sensitivity to water content and low-complexity 3D image reconstruction. These benefits are well-suited for its application …
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Incoherent Scattering of Microwaves From Enhanced Density Fluctuations Ina Dc-Discharge
Made available in DSpace on 2015-05-12T21:41:41Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6801719.PDF: 1804068 bytes, checksum: 58f74a612f34ba4224d24607c2123df2 (MD5) Previous issue date: 1967
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Incoherent scattering of microwaves from enhanced density fluctuations in a DC-discharge
"Radiation of 9375 MHz is incident on a cylindrical neon discharge enclosed in a 1"" square waveguide and incoherent scattering in the upper sideband is investigated. Scattering is observed in the backward and forward directions from the naturally enhanced density fluctuations in two electron …
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Broadband Squeezed Microwaves and Amplification with a Josephson Traveling-Wave Parametric Amplifier
… Josephson amplifiers to generate squeezed microwaves. These narrow-band squeezers use a resonator and its Q-enhanced circulating field to increase the interaction between photons and a single or few nonlinear elements, but can lead to higher-order nonlinearities that impact squeezing …
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Scattering of Microwaves From Plasma Waves Excited in an Electron Beam-Plasma Interaction
Made available in DSpace on 2015-05-12T22:38:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7206869.PDF: 2550049 bytes, checksum: 105d3199f28887f712e11f133771c169 (MD5) Previous issue date: 1971
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The Helical Instability Produced in Gaseous Magnetoplasmas by The Gyro-Interaction of Microwaves
Made available in DSpace on 2014-12-08T22:23:45Z (GMT). No. of bitstreams: 1 6511755.pdf: 5231074 bytes, checksum: b7740be807dd0c5ea30dd277ae72d298 (MD5) Previous issue date: 1965
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Atmospheric water vapour tomography for DInSAR application and effect of volcanic plume on the microwaves
A particular synergy among GPS and SAR techniques, to improve the precision of the current ground deformation monitoring techniques,is investigated. The study of atmospheric anomalies in the GPS EM waves propagation is useful to extrapolate information about the wet refractivity ?eld. Because of …
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Interaction of Microwaves in Gaseous Discharge Plasmas: Application to the Study of Fundamental Processes in Gases
Made available in DSpace on 2014-12-04T21:02:49Z (GMT). No. of bitstreams: 1 0015178.pdf: 5761770 bytes, checksum: 8475c1bdc7f8c908409bb759d135627f (MD5) Previous issue date: 1955
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Dielectric Properties of Minerals and Ores and the Application of Microwaves for Assisted Comminution and Ore Sorting
Upon exposure to microwave radiation, most valuable minerals heat very well, while in general, gangue minerals do not. This selective heating leads to differential thermal expansion across phase boundaries and causes microfractures, which can improve liberation and reduce ore competency. During ore …
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