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Full-Text Articles in Physics
Magnetohydrodynamic Salt Water Drive, Noah Schmelzer
Magnetohydrodynamic Salt Water Drive, Noah Schmelzer
Physics Student Work
Magnetohydrodynamics (MHD) is the behavior of conducting fluids in electric and magnetic fields. Plasmas, liquid metals, and water are all examples of a conducting fluid with magnetic properties. Much of MHD is fluid-flow and the effects of electromagnetic fields on them, but propulsion is also a possibility. A magnetohydrodynamic salt water propulsion system was constructed to observe the effects of salinity on resistivity, and then on the overall efficiency of the drive. Salinity of water and corresponding resistivity was altered to optimize fluid velocity. The apparatus used was a rectangular tube with permanent magnets perpendicular to aluminum electrodes. The fluid …
Quantification Of Contrast-Enhanced Ultrasound, Joseph Pathoulas
Quantification Of Contrast-Enhanced Ultrasound, Joseph Pathoulas
All College Thesis Program, 2016-2019
The aim of this experiment was to investigate the effect of manipulating ultrasound scanner settings on time-intensity curve parameters in a tube perfusion phantom system using contrast-enhanced ultrasound imaging. Imaging was performed using a Philips LOGIQ E9 ultrasound scanner equipped with a C1-6VN transducer and utilized two different microbubble contrast agents: Definity and Lumason. The ultrasound scanner settings manipulated included: gain, dynamic range, and frequency. Additionally, relative microbubble concentration, microbubble type, and perfusion flow rate were manipulated. Four time-intensity curve parameters (time to peak, area under curve, gradient, peak intensity) were measured from linearized pixel data. Time to peak was …