Browsing Department of Physics by Title
Now showing items 21-40 of 197
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Biological Damage Of UV Radiation In Environments Of F-type Stars
(Physics, 2014-07-14)I investigate the general astrobiological significance of F-type main-sequence stars with special consideration to stellar evolutionary aspects due to nuclear evolution. DNA is taken as a proxy for carbon-based macromolecules ... -
Blocker-based Scatter Correction For Cone-beam Computed Tomography
Cone-beam computed tomography (CBCT) imaging is widely used in radiation therapy for treatment planning and image-guided therapy. More x-ray scatter signals are detected by the two-dimensional detector arrays in CBCT than ... -
Boundaries and Currents of the Dayside Magnetosphere: MHD Simulations and Observations
(2023-05-22)The solar wind streams through space at supersonic speeds, carrying plasma and the interplanetary magnetic field (IMF) from the sun. Earth’s magnetosphere presents a magnetosonic obstacle to the solar wind flow, which slows ... -
Bulk FePt-based nanocomposite magnets with enhanced exchange coupling
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2007-07-23)High density bulk FePt/Fe3Pt nanocomposite magnets have been prepared by high-pressure warm compaction of chemically synthesized FePt and Fe3O4 nanoparticles. It is found that the density increases with the compaction ... -
Bulk FePt-based nanocomposite magnets with enhanced exchange coupling
(AIP, 2007)High density bulk FePt/Fe3Pt nanocomposite magnets have been prepared by high-pressure warm compaction of chemically synthesized FePt and Fe3O4 nanoparticles. It is found that the density increases with the compaction ... -
Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2007-04-27)FePt/Fe3Pt bulk nanocomposite magnets have been prepared by the spark plasma sintering of chemically synthesized FePt and Fe3O4 nanoparticles under 100 MPa at 400–600 °C. It was found that the phase transition of the FePt ... -
Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering
(AIP, 2007)FePt/Fe3Pt bulk nanocomposite magnets have been prepared by the spark plasma sintering of chemically synthesized FePt and Fe3O4 nanoparticles under 100 MPa at 400–600 °C. It was found that the phase transition of the FePt ... -
Calibration Of The Atlas Intermediate Tile Calorimeter
(Physics, 2011-07-14)The Large Hadron Collider (LHC) at CERN near Geneva, Switzerland is the world's largest particle collider. UTA contributes to the ATLAS detector at the LHC. There are many detection systems within ATLAS, and the hadronic ... -
Can Silicon Carbide Nanotubes Be Effective Storage Medium For Hydrogen Storage?
(Physics, 2009-09-16)A systematic study of molecular hydrogen adsorption on three different atomic configurations of armchair SICNTs has been performed. In the first stage of our study, first principles calculations using both density functional ... -
CARDIAC SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY (SPECT) SIMULATION USING THE XCAT PHANTOM AND THE SIMIND PACKAGE
(2022-08-17)Clinical data indicates a prevalence of transmural perfusion defects in the apical, mid, and basal segment of the left ventricle (LV) wall in patients with coronary artery diseases (CAD). To administer therapeutic regimes ... -
Case Studies Of The Circular Restricted Three Body Problem
(Physics, 2007-08-23)In this thesis, the onset of instability for a planet which is part of a stellar binary system is investigated by running numerical simulations of the circular restricted three body problem. This study also makes use of a ... -
Catalogue of Computed Pseudo-Redshifts from BATSE GRB Data
(2020-06-08)We present a catalog of the redshift estimates and probability distributions for 565 individual Short-duration Gamma-Ray Bursts (SGRBs) detected by the Burst And Transient Source Experiment (BATSE). This result is based ... -
CHANDRA EJECTA KINEMATICS STUDIES AND AN ISO SPECTROSCOPIC SURVEY OF SUPERNOVA REMNANTS
(2022-08-15)The structure of metal-rich ejecta created from a supernova (SN) reveals vital information about the explosion of the progenitor star and the dynamical evolution of the supernova remnant (SNR). This research focuses on the ... -
CHARGE TRANSFER AND BUILT-IN FIELDS AT A SEMICONDUCTOR-CRYSTALLINE OXIDE INTERFACE: EFFECTS OF THE INTERFACE DIPOLE AND SURFACE TERMINATION
(2022-08-17)Charge transfer and built-in fields across semiconductor heterojunctions underpin the functionality of virtually all device technologies. In this regard, interfaces between insulating oxides and semiconductors have been ... -
CHIRALITY IN QUANTUM FIELD THEORY AND ITS ROLE IN THE STANDARD MODEL AND BEYOND
(2022-08-12)Chirality as a symmetry of particle physics occupies a unique role in the standard model. It arises from general space-time principles yet remains central to the formulation of local gauge theories. This work explores the ... -
Conditions For Wave Propagation Along Solar Magnetic Flux Tubes
(Physics, 2007-08-23)There is an intimate relation between all aspects of the solar activity and the presence of solar magnetic fields. Observations showed that the magnetic field at the photospheric level consists of magnetic flux tubes, which ... -
CORE-COLLAPSE SUPERNOVAE AND THEIR REMNANTS: CHANDRA STUDY OF SN 1987A AND A MULTI-WAVELENGTH FOLLOW-UP OF SN 2021KRF
(2023-08-08)**Please note that the full text is embargoed until 8/1/2024** ABSTRACT: Understanding how exploding stars impact their surroundings is of fundamental importance to all areas of astrophysics. Young supernovae (SNe) and ... -
Curie temperatures of annealed FePt nanoparticle systems
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2007-03-28)The chemically synthesized FexPt100-x nanoparticles with controlled compositions were annealed to transfer the disordered face-centered-cubic structure to the ordered structure. It was found that the L10 FePt structure can ... -
Cutoff Frequencies For Alfven Waves In The Solar Atmosphere
(Physics, 2014-12)Propagation of linear Alfven waves in the isothermal and non-isothermal solaratmosphere is investigated numerically and analytically. It is shown that thetwo wave variables, the velocity and magnetic field perturbations, ...