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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
(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 ...
Inherent fibrin fiber tension propels mechanisms of network clearance during fibrinolysis
(2020-04-15)
Proper wound healing necessitates both coagulation (the formation of a blood clot) and fibrinolysis (the dissolution of a blood clot). A thrombus resistant to clot dissolution can obstruct blood flow, leading to vascular ...
The Effects of Low-Energy Heavy Charged Particles on the Optically Stimulated Luminescence and Thermoluminescence of Aluminum Oxide and Beryllium Oxide
(East Carolina University, 2021-06-02)
Optically Stimulated Luminescence (OSL) and Thermoluminescence (TL) are methods utilized to evaluate the energy absorbed by crystalline insulators. It is necessary to test luminescent materials in a controlled environment ...
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 ...
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 ...
SAFE HAVENS AND HOT SPOTS: IONIZING RADIATION IN MARTIAN PERMAFROST AND ITS INFLUENCE ON THE SURVIVAL OF ANCIENT LIFE
(East Carolina University, 2022-06-20)
Permafrost on Mars is considered a primary target for the search for life. On a microscopic scale permafrost is highly non-uniform and the effective radiation dose absorbed by a microbe, and thus its survival probability, ...
Lèvy noise induced steady states
(East Carolina University, 2022-06-08)
Systems far from equilibrium organize themselves to accommodate energy throughput. It is also in these nonequilibrium systems where noise has often been found to follow alpha-stable distributions, commonly called Lèvy ...