Browsing Physics by Author "Physics"
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A NEW ELECTRON SPECTROSCOPY SYSTEM FOR MEASURING ELECTRON EMISSION FROM FAST ION INTERACTIONS WITH ATOMIC, MOLECULAR, AND CONDENSED PHASE TARGETS
Hawkins, Wilson L (East Carolina University, 2016-07-25)A new electron spectroscopy system has been developed for measuring electron emission from gas and solid targets induced by fast ion impact. This system uses an ultrahigh-vacuum compatible cylindrical deflector analyzer, ... -
A solution method determining the effect of spin upon gravitational effects in the surroundings of a black hole
Culbreth, Shawn (East Carolina University, 2017-12-12)Using the theory of General Relativity and quasi-normal modes (QNMs) from the Teukolsky equation as a source of quasi-periodic oscillations (QPOs) from black holes provides information about black hole mass and spin. This ... -
An Initial Calibration of a Proton Induced X-ray Emission (PIXE) Material Analysis System Using GUPIXWin
Seip, Robert Michael (East Carolina University, 2020-11-17)Proton induced x-ray emission (PIXE) technology has been used extensively over the last few decades to perform highly accurate multi-elemental trace element analyses with much success. The recent implementation of a new ... -
ANALYTICAL CROSS SECTIONS FOR MOMENTUM TRANSFER TO INNER SHELL ELECTRONS
Conticchio, Craig D. (East Carolina University, 2011)The Plane Wave Born Approximation (PWBA), the most prevalent First Born Approximation (FBA), serves as input into theories well beyond the scope of the PWBA. Using Mathematica's advanced symbolic programming capabilities ... -
Assessment of single-spot TOPAS MC simulation for proton pencil beam scanning in homogeneous and heterogeneous media and quantification of dosimetric impact of CT metal artifact on IMPT and VMAT plans
Lin, Chun-I (East Carolina University, 2020-11-17)Proton pencil beam scanning (PBS) radiation therapy has become thriving worldwide. The accuracy of proton dose calculation that based on proper modeling for each single scanning spot as well as accurate CT image data is ... -
Characterization of critical spawning habitats of weakfish, spotted seatrout and red drum in Pamlico Sound using hydrophone surveys
Luczkovich, Joseph J.; Daniel, Hal J., III; Sprague, Mark W. (1999)Final report for "Characterization of critical spawning habitats of weakfish, spotted seatrout and red drum in Pamlico Sound using hydrophone surveys." -
COMPARATIVE ANALYSIS OF TWO HUMAN CANCER CELL LINES FOLLOWING EXPOSURE TO LOW DOSE RADIATION
Nangami, Gladys N. (East Carolina University, 2011)Over the past two decades, studies on the cellular response to very low dose radiation have been revolutionizing historically-held paradigms of cellular radioresponse. Indeed, a host of seemingly contradictory events have ... -
COMPARISON OF TWO HUMAN CELL LINES FOLLOWING EXPOSURE TO LOW DOSE RADIATION AND TREATMENT WITH SOYBEAN MISO AND ITS ACTIVE INGREDIENT GENISTEIN
Sattler, Jennifer A. (East Carolina University, 2013)Exposure to radiation is increasingly becoming a worldwide health issue. Because of this, the need for effective radioprotectors is critical. This need is not met by amifostine, the current "gold standard" in radioprotectors, ... -
Considering the Oxygen Effect : Further Development of a Volumetric Model of Tumor Response to Radiation Therapy for Cervical Cancer
Winkler, Stephanie S. (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 ... -
Correlating the Morphological and Light Scattering Properties of Biological Cells
Moran, Marina (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
Wicker, Davidson S. (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
Jacobs, Kenneth M. (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 multi-purpose proton microbeam system: irradiation of tumor cells by energetic protons at the Bragg peak
Haibet, Raafat (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
Mutisya, Stephen (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
Mutisya, Stephen M (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
Ferreira, Maria Clara (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. ... -
Electron Emission from Fast Proton and Carbon Ion Interactions with Gold Nanoparticles and Amorphous Solid Water
Hawkins, Wilson (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 ... -
EVALUATING THE USE OF TURBIDIMETRY FOR STUDYING FIBRIN STRUCTURAL PROPERTIES
Belcher, Heather A. (East Carolina University, 2023-04-21)A fibrin fiber mesh forms the structural backbone of blood clots. Many pathological conditions result in fibrin gels with altered structural properties, so there is interest in developing rapid and accurate ways to ... -
Evaluation of Magnetic Resonance Imaging in Prostate Radiotherapy for Improved Treatment Outcomes
Ruiz, Brian (East Carolina University, 2019-05-01)External beam radiation therapy is among the most common modalities of curative treatment for prostate cancer and has evolved substantially with the inclusion of multimodality imaging in treatment planning. It has been ... -
Fast Carbon-Ion and Proton Induced Electron Emission from Condensed-Phase Biological Targets
Maertz, Eric (East Carolina University, 2018-07-23)Fast charged particles interact with matter through various ionization and excitation pathways that aren't fully understood. Predicting the effects of these interactions is vital in many fields such as radiation therapy, ...