Browsing OU - Theses by Title
Now showing items 1130-1149 of 2137
-
Investigation of a Generalized Frequency Domain Method for Modeling Time-Varying Loads on Antennas
(2019-12-13)Within traditional antenna design, the behavior of the antenna can be dictated by its physical dimensions and their proportions to a wavelength. Traditional electrically small antennas in particular face many limitations ... -
Investigation of Antenna Edge Treatments and Ground Plane Coupling Behavior
(2016-12-16)Guided wave structures can perform as broadband antenna elements through the use of a gradual impedance transformation. The impedance match is typically created through gradual structural changes to match the impedance of ... -
INVESTIGATION OF BIOACTIVITIES AND INDUCTION OF NEW METABOLITES IN FUNGI
(2016-12)In these studies, three different problems are looked at: the need for new compounds to treat infections caused by the Trichomonas vaginalis parasite, the development of methodology to induce production of new metabolites, ... -
INVESTIGATION OF CASING DEFORMATION DURING HYDRAULIC FRACTURING CONSIDERING WELLBORE CENTRALIZATION AND CEMENT VOIDS
(2018)The fast growth of shale gas development through horizontal drilling and hydraulic fracturing has expanded the extraction of hydrocarbon resources in countries such as the United States, China, and Argentina. Even though ... -
Investigation of Chemically Prestressed Concrete
(2018-05-12)This research investigated the possibility of prestressing a concrete element by inducing expansion of the concrete paste at an early age. This behavior is being called chemically prestressed concrete, for this project, ... -
Investigation of Cointegration Relationships in Turbulent Flows
(2016)Turbulence has often been called one of the last unsolved problems of classical physics and impacts a wide variety of fields in nature and engineering. An important area of focus in turbulence research is the discovery and ... -
Investigation of Designs for Tuning of Mutual Coupling and Operating Frequency in High-Power Slot Antenna Arrays
(2020-05-08)Today's congested frequency spectrum calls for frequency agile arrays and antennas that can avoid the interference of the myriad of RF sources, from satellites to amateur radio, that take up the same bandwidths. Previous ... -
INVESTIGATION OF DRILLSTRING VIBRATIONS USING FINITE ELEMENT METHOD SIMULATIONS AND DESIGN AND IMPLEMENTATION OF EXPERIMENTAL SETUP
(2017-05-12)In this study, an extensive assortment of the principal studies related to drill-string vibrations is presented, focusing on analytical studies, finite element models and experimental setups. A discussion on the current ... -
AN INVESTIGATION OF EXPERIMENTAL PARAMETERS REQUIRED TO STUDY HYDROCARBON PHASE BEHAVIOR UNDER CONSTANT VOLUME AND CONSTANT COMPOSITION CONDITIONS
(2016)Accurate fluid phase behavior evaluation is essential for reservoir engineers to predict the type of reservoir, oil and gas in place, and develop proper production strategies. The change in phase behavior and phase equilibrium ... -
INVESTIGATION OF FAULTING PROCESSES OF TWO M5 EARTHQUAKE SEQUENCES IN OKLAHOMA
(2017-05)I investigate the stress interaction inside different earthquake clusters to better understand the factors that might drive and control seismicity. I examine a catalog of 6226 events that have been relocated using the ... -
Investigation of flexural behavior of reinforced concrete with 3D printed glass fiber reinforced polymer
(2022)More than 40 years of Fiber Reinforced Polymers in Civil Engineering has shown the widespread use and advantages of these unique composites. FRP composites are high strength, lightweight, corrosion resistant materials that ... -
Investigation of flow reversal in a vertical channel with a cyclic heater
(1999)A numerical study of airflow in a vertical channel between parallel plates with a channel heater has been conducted. The numerical model parallels a typical home fireplace. The primary objective of the study is to verify ... -
Investigation of Low-Power Antenna Reconfiguration Through Biasing of Magnetic Loads
(2017-05-12)In modern RF systems, tunable devices are increasingly necessary to provide agility in crowded spectral environments. The antenna, as an integral part of any wireless system, must be capable of operating well at multiple ... -
Investigation of Polyurethane Shape Memory Polymer for Potential Applications in Brain Aneurysm Treatment
(2019-05-10)Intracranial aneurysms (ICAs) are abnormal deformations in the walls of cranial arteries that can rupture, resulting in hemorrhage and stroke. Modern ICA treatments minimize the risk of rupture by limiting blood flow into ... -
Investigation of Tethered System for Creating Artificial Gravity
(2018)Interplanetary journeys are long; taking anywhere between 6 months to a few years. Studies performed with astronauts in the various space missions have provided insights on adverse effects of microgravity on the human body. ... -
Investigation of the drivers of skin microbial diversity in six co-occurring salamander species in the presence of amphibian pathogens
(2023-05-12)Communities of symbiotic bacteria associated with a host, also known as microbiomes, have gained increased recognition for the myriad of key roles that they play. For example, microbiomes of the skin and gut have been ... -
INVESTIGATION OF THE EFFECT OF TEMPERATURE ON LOW-SALINITY WATERFLOODING
(2019-08-01)Even though Low-Salinity Waterflooding (LSW) has been under investigation as a promising Enhanced Oil Recovery (EOR) technique for almost three decades, most of the studies in the literature are focused on investigating ... -
Investigation of the Effects of End Region Deterioration in Precast, Prestressed Concrete Bridge Girders
(2016)An important factor in life expectancy of concrete bridges is the effect of corrosion of reinforcing steel on concrete and appurtenant embedded materials. New bridges, though continuously exposed to the elements, are ... -
Investigation of the Effects of Weight on Bit and Rotational Speed on Directional Drilling Parameters and Drillstring Mechanics
(2020)To increase efficiency by optimization, automation has become synonymous with increased drilling efficiency. The oil and gas industry has slowly been adopting automation and process control to improve safety, increase ...