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Full-Text Articles in Engineering
Characterization Of Polyacrylonitrile Carbon Fibers, Christian Burke Iversen
Characterization Of Polyacrylonitrile Carbon Fibers, Christian Burke Iversen
Biomedical and Chemical Engineering – Theses
Carbon fiber composites are a widely used, advanced material with exceedingly high strength to weight properties. In this thesis, a literature overview of carbon fiber manufacturing was provided, as well as a thorough analysis of in- house electrospun polyacrylonitrile fiber stabilization and surface modification of the resulting carbon fibers. In the first section, an overview of precursor fiber fabrication is provided, followed by an analysis of stabilization using surface and bulk composition, dimensional analysis, and functional group analysis via FTIR. The second section uses the current stabilization procedure to develop carbon nanofibers. Fibers first underwent a nitric acid oxidation time …
Voltage Effects On Cells Cultured On Metallic Biomedical Implants, Seyed Morteza Haerihosseini
Voltage Effects On Cells Cultured On Metallic Biomedical Implants, Seyed Morteza Haerihosseini
Biomedical and Chemical Engineering - Dissertations
Electrochemical voltage shifts in metallic biomedical implants occur in-vivo due to a number of processes including mechanically assisted corrosion. Surface potential of biomedical implants and excursions from resting open circuit potential (OCP), which is the voltage they attain while in contact with an electrolyte, can significantly change the interfacial properties of the metallic surfaces and alter the behavior of the surrounding cells, compromising the biocompatibility of metallic implants. Voltages can also be controlled to modulate cell function and fate. To date, the details of the physico-chemical phenomena and the role of different biomaterial parameters involved in the interaction between cells …
Nitric Oxide Releasing Polymers For Vascular Graft Applications, Ifeanyi U. Onyejekwe
Nitric Oxide Releasing Polymers For Vascular Graft Applications, Ifeanyi U. Onyejekwe
Biomedical and Chemical Engineering - Dissertations
Nitric oxide [NO] is an endogenous gas involved in a multitude of physiological functions, ranging from vasodilatation, inflammatory response to inhibition of platelet aggregation. Significant interest exists for therapeutic application of exogenous NO, particularly for the improvement of foreign-body responses of biomaterials. One challenge amongst several others that must be taken into consideration is NO's short half-life, ranging from 2-3 s, in physiological systems. Researchers have worked on synthesizing materials, formally referred to as NO donors/NONOates capable of preserving NO and spontaneous gas release upon contact with blood under physiological conditions. Two groups of these commercially available NO donors known …
The Role Of Fluorescence And Human Factors In Quantitative Transdermal Blood And Tissue Analysis Using Nir Raman Spectroscopy, Bin Deng
Biomedical and Chemical Engineering - Dissertations
This research is part of an ongoing project aimed at the application of combined near infrared (NIR) Raman and fluorescence spectroscopy to noninvasive in vivo blood analysis including but not limited to glucose monitoring. Coping with practicalities of human factors and exploring ways to obtain and use knowledge gained about autofluorescence to improve algorithms for blood and tissue analysis are the general goals of this research. Firstly, the study investigated the various sources of human factors pertinent to our concerns, such as fingerprints, turgor, skin hydration and pigmentation. We then introduced specialized in vivo apparatus including means for precise and …
Design And Implementation Of A Shoulder Simulator, Chelsea Lynn Kowal
Design And Implementation Of A Shoulder Simulator, Chelsea Lynn Kowal
Honors Capstone Projects - All
The main objective of this thesis project is to build a shoulder simulator to be able to understand the mechanics of the shoulder, specifically the rotator cuff and deltoid muscles. The shoulder simulator should be able to mimic the important motions of the human shoulder by pulling on tendons of cadaver shoulders and moving the shoulder in various specified motions. In my thesis project, I worked on creating a shoulder simulator that would control the rotator cuff muscles along with the three deltoid muscles. In order to do this, I needed to design and test the shoulder simulator using cadaver …
Escherichia Coli Hm22 Biofilm Viability When In Contact With Implant-Grade, Titanium-6aluminum-4-Vanadium Alloy Under Varied Electrochemical Conditions, Alexander Ross Weiss
Escherichia Coli Hm22 Biofilm Viability When In Contact With Implant-Grade, Titanium-6aluminum-4-Vanadium Alloy Under Varied Electrochemical Conditions, Alexander Ross Weiss
Honors Capstone Projects - All
No abstract provided.