Browsing University of Missouri-Columbia by Thesis Advisor "Islam, Naz E."
Now showing items 21-34 of 34
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Effects of nano-second pulsed electric fields on human breast cancer cell line-MCF7
(University of Missouri--Columbia, 2011)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Effects of nanosecond pulsed electric fields on the human breast cancer cell line MCF-7 have been investigated for changes in cell number, DNA ... -
Electromagnetic effects on soybeans
(University of Missouri--Columbia, 2007)In this study we have exposed different varieties of soybean seeds to electromagnetic (EM) radiation at a frequency other than that of light. The objective was to determine changes in the germination rate, if any, under ... -
Maximizing terahertz pulse amplitude from low temperature gallium arsenide photo conductive semiconductor switch
(University of Missouri--Columbia, 2011)A signal is produced by the photoconductive action in a PCSS, which travels through the bulk to the metallic contacts and is radiated through the electrodes of the PCSS. The simulation analysis was done for the semiconductor ... -
Near field microwave imaging techniques for embedded object detection and shape reconstruction
(University of Missouri--Columbia, 2007)A method for the detection, imaging and reconstruction of an embedded object through the application of a near field, frequency-synthesized microwave pulse is described. The work describes an alternate detection and ... -
New topologies of high gain-step-up dc-dc power converters for renewable energy applications
(University of Missouri--Columbia, 2020)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This dissertation proposes new topologies of high step-up dc-dc power electronic converters for integration renewable energy systems, such as photovoltaic ... -
Optimization of charge collection efficiency in MSM photodetector
(University of Missouri--Columbia, 2005)The effects of different geometries, heights and concentrations per unit area of gratings in the active region of a metal semiconductor metal photo-detector have been analyzed for enhanced charge collection through ... -
Optimizing antenna gain with a metamaterial filter
(University of Missouri--Columbia, 2011)Metamaterials are man-made structures, usually designed by placing electromagnetic resonators, such as split ring resonators (SRRs), in a periodic array. Metamaterials also exhibit lensing properties, and, when placed next ... -
Performance analysis of high power photoconductive switch at elevated temperature
(University of Missouri--Columbia, 2005)This project deals with the analysis of high power radio frequency effects on a non-linear opposed contact GaAs photoconductive semiconductor switch, used in high power microwave generation. Specifically, effects of heating ... -
Silicon carbide as a photoconductive switch material for high power applications
(University of Missouri--Columbia, 2006)This research work discusses the effort at the Electrical and computer engineering (ECE) department at the University of Missouri Columbia (UMC) in developing this technology through simulation and experiments with SiC ... -
Simulation algorithms for fractal radiation
(University of Missouri--Columbia, 2009)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This thesis presents a method to analyze a series of structures, referred to as fractals, that radiate electromagnetic waves. The fractal series are ... -
Simulation of spiral-shaped mems human energy harvester using piezoelectric transduction
(University of Missouri--Columbia, 2018)Energy harvesters are one of the focus areas in the field of research. The complex smart devices and miniaturized electronic design limit the use of traditional wired power source. The need for an efficient human energy ... -
The study of single phase diode rectifiers with high power factor and low total harmonic distortion
(University of Missouri--Columbia, 2008)The mains current in an ac/dc converter contains periodic current pulses due to the action of rectifier and output filter capacitor. The high current peaks cause harmonic distortion of the supply current and low power ... -
A TEM cell design to study electromagnetic radiation exposure from cellular phones
(University of Missouri--Columbia, 2008)A transverse electromagnetic (TEM) cell was designed and fitted with a double ended monopole antenna as a signal leader in order to couple electromagnetic radiation from GSM 900 and 1800 commercial cellular phones into a ... -
Wearable energy-harvesting micro devices /
(University of Missouri--Columbia, 2016)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The focus of this dissertation is wearable energy-harvesting mircro devices. They are designed to harvest energy from the surrounding environment to ...