Browsing Physics by Title
Now showing items 23-42 of 164
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Considering the Oxygen Effect : Further Development of a Volumetric Model of Tumor Response to Radiation Therapy for Cervical Cancer
(East Carolina University, 2014)Mathematical modeling of tumor response to radiation therapy (RT) has great potential for designing therapy plans that are more personalized, more adaptive, and more reliable for outcome predictions. A preexisting model ... -
Construction of realistic hybrid computational fetal phantoms from radiological images in three gestational ages for radiation dosimetry applications
(2019-10-10)Radiation exposure and associated radiation risks are major concerns for fetal development for pregnant patients who undergo radiation therapy or diagnostic imaging procedures. In order to accurately estimate the radiation ... -
Construction of realistic hybrid computational fetal phantoms from radiological images in three gestational ages for radiation dosimetry applications
(2019-10-10)Radiation exposure and associated radiation risks are major concerns for fetal development for pregnant patients who undergo radiation therapy or diagnostic imaging procedures. In order to accurately estimate the radiation ... -
Correlating the Morphological and Light Scattering Properties of Biological Cells
(East Carolina University, 2013)The scattered light pattern from a biological cell is greatly influenced by the internal structure and optical properties of the cell. This research project examines the relationships between the morphological and scattering ... -
THE DESCRIPTION OF SCHUMANN ELECTROMAGNETIC RESONANCES BETWEEN EARTH AND ITS IONOSPHERE AS BOSE-EINSTEIN CONDENSATES OF EXTREMELY LOW FREQUENCY PHOTONS
(East Carolina University, 2012)The purpose of this thesis is to show that Schumann resonances between Earth and its ionosphere are Bose-Einstein condensates of extremely low frequency photons. We will show that the photon densities of the first five ... -
Development of a Diffraction Imaging Flow Cytometer for Study of Biological Cells
(East Carolina University, 2010)Visible light interacts with biological cells primarily through elastic scattering. With coherent excitation the scattered light is coherent as well and contains much information about the cells morphology but with the ... -
Development of a Finite Difference Time Domain (FDTD) Model for Propagation of Transient Sounds in Very Shallow Water
(2013-08-12)We developed a finite difference time domain (FDTD) model for sound propagation using pressure and velocity grids with both three-dimensional Cartesian and two-dimensional cylindrical implementations. Propagation parameters, ... -
Development of a multi-purpose proton microbeam system: irradiation of tumor cells by energetic protons at the Bragg peak
(East Carolina University, 2021-08-11)Employing ionization radiation to serve our communities has various applications in agricultural, industrial, and medical fields. The application of physics to medicine deals mainly with ionizing radiation in diagnosis and ... -
DEVELOPMENT OF A NEW SPECTROPHOTOMETRIC METHOD FOR FULL CHARACTERIZATION OF TURBIDITY
(East Carolina University, 2022-07-21)Characterization of turbid materials by determining their inherent optical properties have attracted strong research interest for potentially wide applications in fields such as material analysis and biomedical optics. The ... -
DEVELOPMENT OF A NEW SPECTROPHOTOMETRIC METHOD FOR FULL CHARACTERIZATION OF TURBIDITY
(East Carolina University, 2022-07-21)Characterization of turbid materials by determining their inherent optical properties have attracted strong research interest for potentially wide applications in fields such as material analysis and biomedical optics. The ... -
DOSIMETRIC STUDY OF BETA-MINUS EMITTER PRASEODYMIUM-142 : APPLICATIONS IN MICROSPHERE BRACHYTHERAPY FOR HEPATOCELLULAR CARCINOMA AND BRACHYTHERAPY FOR OCULAR SQUAMOUS CELL CARCINOMA
(East Carolina University, 2013)A dosimetric study of the beta-minus emitter Praseodymium-142 (¹⁴²Pr) was performed and two main innovative applications of this source in brachytherapy are proposed: microsphere brachytherapy and eye plaque brachytherapy. ... -
Elastic and inelastic light scattering from single bacterial spores in an optical trap allows the monitoring of spore germination dynamics
(East Carolina University, 2009-05-15)Raman scattering spectroscopy and elastic light scattering intensity (ESLI) were used to simultaneously measure levels of Ca-dipicolinic acid (CaDPA) and changes in spore morphology and refractive index during germination ... -
Electron Emission from Fast Proton and Carbon Ion Interactions with Gold Nanoparticles and Amorphous Solid Water
(East Carolina University, 2021-07-22)Widely used in the treatment of cancer, radiation therapy delivers a lethal dose of energy to malignant tissue. Modeling the deposition of energy in the interactions of the radiation with biological material is important ... -
Electron Emission from Foils and Biological Materials after Proton Impact
(East Carolina University, 2008-10)Electron emission spectra from thin metal foils with thin layers of water frozen on them (amorphous solid water) after fast proton impact have been measured and have been simulated in liquid water using the event-by-event ...