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Articles 1 - 30 of 160
Full-Text Articles in Engineering
Fast Measurements Of Flow Through Mitral Regurgitant Orifices With Magnetic Resonance Phase Velocity Mapping, Haosen Zhang, Sandra S. Halliburton, Richard D. White, George P. Chatzimavroudis
Fast Measurements Of Flow Through Mitral Regurgitant Orifices With Magnetic Resonance Phase Velocity Mapping, Haosen Zhang, Sandra S. Halliburton, Richard D. White, George P. Chatzimavroudis
Chemical & Biomedical Engineering Faculty Publications
Magnetic-resonance (MR) phase velocity mapping (PVM) shows promise in measuring the mitral regurgitant volume. However, in its conventional nonsegmented form, MR-PVM is slow and impractical for clinical use. The aim of this study was to evaluate the accuracy of rapid, segmented k-spaceMR-PVM in quantifying the mitral regurgitant flow through a control volume (CV) method. Two segmented MR-PVM schemes, one with seven (seg-7) and one with nine (seg-9) lines per segment, were evaluated in acrylic regurgitant mitral valve models under steady and pulsatile flow. A nonsegmented (nonseg) MR-PVM acquisition was also performed for reference. The segmented acquisitions were …
Quantitative Models Of The Rat Pulmonary Arterial Tree Morphometry Applied To Hypoxia-Induced Arterial Remodeling, Robert C. Molthen, Kelly L. Karau, Christopher A. Dawson
Quantitative Models Of The Rat Pulmonary Arterial Tree Morphometry Applied To Hypoxia-Induced Arterial Remodeling, Robert C. Molthen, Kelly L. Karau, Christopher A. Dawson
Biomedical Engineering Faculty Research and Publications
Little is known about the constituent hemodynamic consequences of structural changes that occur in the pulmonary arteries during the onset and progression of pulmonary arterial remodeling. Many disease processes are known to be responsible for vascular remodeling that leads to pulmonary arterial hypertension, cor pulmonale, and death. Histology has been the primary tool for evaluating pulmonary remodeling, but it does not provide information on intact vascular structure or the vessel mechanical properties. This study is an extension of our previous work in which we developed an alternative imaging technique to evaluate pulmonary arterial structure. The lungs from Sprague-Dawley rats were …
The Impossible Dose - How Can Something Simple Be So Complex? , Lars Hode
The Impossible Dose - How Can Something Simple Be So Complex? , Lars Hode
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Genetic Engineering Of Syringyl-Enriched Lignin In Plants, Vincent Lee C. Chiang, Laigeng Li
Genetic Engineering Of Syringyl-Enriched Lignin In Plants, Vincent Lee C. Chiang, Laigeng Li
Michigan Tech Patents
The present invention relates to a novel DNA sequence, which encodes a previously unidentified lignin biosynthetic pathway enzyme, sinapyl alcohol dehydrogenase (SAD) that regulates the biosynthesis of syringyl lignin in plants. Also provided are methods for incorporating this novel SAD gene sequence or substantially similar sequences into a plant genome for genetic engineering of syringyl-enriched lignin in plants.
Development And Analysis Of A Software Package To Quantify In Vivo Polyethylene Wear After Total Hip Arthroplasty, Allison Kinney, Catherine Ambrose
Development And Analysis Of A Software Package To Quantify In Vivo Polyethylene Wear After Total Hip Arthroplasty, Allison Kinney, Catherine Ambrose
Allison Kinney
Since the first total hip arthroplasty (THA) in 1938, THA evolved and developed into one of the major concentrations of orthopaedic research. The typical hip implant device used today incorporates a femoral and an acetabular component that serve to replicate the anatomical and mechanical functions of the natural hip joint. However, several problems exist that can effect the function of the implant device. Wear in the polyethylene liner of the acetabular component of the total hip replacement device is known as one of the major factors that affects the longevity of total hip replacement devices. Both manual and computer-aided techniques …
Bme Stats Fall 2004, Department Of Biomedical Engineering, Florida International University
Bme Stats Fall 2004, Department Of Biomedical Engineering, Florida International University
STATS
No abstract provided.
Biomimetic Synthesis Within Polyelectrolyte Microcapsules: Characterization Of Enzyme Catalyzed Polyphenols And Polypeptides, Rohit C. Ghan
Biomimetic Synthesis Within Polyelectrolyte Microcapsules: Characterization Of Enzyme Catalyzed Polyphenols And Polypeptides, Rohit C. Ghan
Doctoral Dissertations
An enzyme-catalyzed synthesis of novel polymers within layer-by-layer (LbL) constructed polyelectrolyte microcapsules has been developed. This approach is based on the selective permeability of polyelectrolyte-capsule walls to monomer molecules. Conversely biocatalysts and forming polymeric chains cannot exit the micro-capsule interior because of their characteristic high molecular weight. Horseradish Peroxidase (HRP) was encapsulated into four bilayer PSS (poly-styrenesulfonate)/PAH (poly-allylamine hydrochloride) capsules with an average diameter of 5 μm using pH-driven pore opening. The polymerization of 4-(2-Aminoethyl) phenol hydrochloride (tyramine) catalyzed by HRP produces easily detectable fluorescent polymeric products after the addition of hydrogen peroxide to the system. It is known that …
Bme Annual Report 2003-2004, Department Of Biomedical Engineering, Florida International University
Bme Annual Report 2003-2004, Department Of Biomedical Engineering, Florida International University
Biomedical Engineering Department Annual Reports
No abstract provided.
Determining Suitability Of A Fly Ash For Silica Extraction And Zeolite Synthesis, Natàlia Moreno, Xavier Querol, Angel López-Soler, José Manuel Andres, Maria Janssen, Henk Nugteren, Mark R. Towler, Kenneth Stanton
Determining Suitability Of A Fly Ash For Silica Extraction And Zeolite Synthesis, Natàlia Moreno, Xavier Querol, Angel López-Soler, José Manuel Andres, Maria Janssen, Henk Nugteren, Mark R. Towler, Kenneth Stanton
Chemical and Biochemical Engineering Faculty Research & Creative Works
Zeolitic material is obtained from fly ash both by direct conversion of the ash or from SiO2 extracts obtained from fly ash. This study focuses on determining the suitability of a fly ash for SiO2 extraction and for zeolite synthesis by direct conversion. The SiO2 extraction experiments from different fly ashes show that the main parameters governing the SiO2 extraction are: (a) a high bulk SiO2 content (> 52%, for obtaining an extraction yield of 100 g SiO2 kg-1) in the starting fly ash, (b) a high proportion (> 55%) of the bulk SiO …
Varying The Time Delay Of An Action Potential Elicited With A Neural-Electronic Stimulator, Robert B. Szlavik, Frank Jenkins
Varying The Time Delay Of An Action Potential Elicited With A Neural-Electronic Stimulator, Robert B. Szlavik, Frank Jenkins
Biomedical Engineering
There have been various theoretical and experimental studies presented in the literature that focus on interfacing neurons with discrete electronic devices such as transistors. It has also been demonstrated experimentally that neural-electronic devices can be used to elicit action potentials in a target neuron in close proximity to the neural-electronic stimulator. The time delay between stimulus and the onset of the neural action potential can be varied by varying the pulse amplitude and width generated by the neural-electronic stimulator (transistor).
Do Microcracks Decrease Or Increase Fatigue Resistance In Cortical Bone?, O. S. Sobelman, J. C. Gibeling, S. M. Stover, S. J. Hazelwood, O. C. Yeh, D. R. Shelton, R. B. Martin
Do Microcracks Decrease Or Increase Fatigue Resistance In Cortical Bone?, O. S. Sobelman, J. C. Gibeling, S. M. Stover, S. J. Hazelwood, O. C. Yeh, D. R. Shelton, R. B. Martin
Biomedical Engineering
Fatigue of cortical bone produces microcracks; it has been hypothesized that these cracks are analogous to those occurring in engineered composite materials and constitute a similar mechanism for fatigue resistance. However, the numbers of these linear microcracks increase substantially with age, suggesting that they contribute to increased fracture incidence among the elderly. To test these opposing hypotheses, we fatigued 20 beams of femoral cortical bone from elderly men and women in load-controlled four point bending having initial strain ranges of 3000 or 5000 microstrain. Loading was stopped at fracture or 106 cycles, whichever occurred first, and microcrack density and length …
Characterization Of Mechanical Behavior Of Electrospun Non-Woven Mats, Ajitha Patlolla
Characterization Of Mechanical Behavior Of Electrospun Non-Woven Mats, Ajitha Patlolla
Theses
Electrospinning is a simple and efficient method for the production of nanometer to micrometer fibers. While the process of electrospinning has been known for over half a century, current understanding of the process and those parameters that affect the properties of the fibers is very limited. Not much work has been done in the field electrospinning process to study the mechanical properties of nonwoven mats produced and to study parameters affecting their properties.
In the first part of this thesis electrospun nonwoven mats made of poly(lactides) solutions were characterized based on their mechanical behavior in biorelevant conditions. In the second …
Thermal Analysis Of Poly(Desamino Arylates), Ali Cem Recber
Thermal Analysis Of Poly(Desamino Arylates), Ali Cem Recber
Theses
The goal of this study is to better understand the thermal characteristics and molecular behavior of two poly(desaminotyrosyl arylates). These two polymers were chosen from a combinatorial library of polymers developed by changing the type and size of the two substitutable chain locations. TGA, DSC and TSC studies were conducted on Poly(12,10) and Poly(2,2) after the samples were exposed to various conditions. The TGA of Poly(12,10) shows low water uptake at 25° C, higher water uptake at 80°C. Water uptake for Poly(2,2) at 25°C is similar to Poly(12,10) at 80°C. The Thermally Stimulated Current analysis (TSC) results indicate a molecular …
Effect Of 655 Nm Diode Laser On Dog Sperm Motility , M. I. Corral-Baqués, T. Rigau, M. Ribera, J. E. Rodríguez, J. Rigau
Effect Of 655 Nm Diode Laser On Dog Sperm Motility , M. I. Corral-Baqués, T. Rigau, M. Ribera, J. E. Rodríguez, J. Rigau
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Treating Lymphoedema With Low Level Laser Therapy, Sandy Anderson, Neil Piller, Colin Carati, Bren Gannon, Ann Angel
Treating Lymphoedema With Low Level Laser Therapy, Sandy Anderson, Neil Piller, Colin Carati, Bren Gannon, Ann Angel
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Low Level Laser Reduces The Severity Of Radiotherapy Induced Oral Mucositis And Xerostomia, Carlos De Oliveira Lopes, Josepa Rigau, Ana Ortega Lopez, Renato A. Zangaro
Low Level Laser Reduces The Severity Of Radiotherapy Induced Oral Mucositis And Xerostomia, Carlos De Oliveira Lopes, Josepa Rigau, Ana Ortega Lopez, Renato A. Zangaro
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Laser – A Therapeutic Intervention For Controlling Lymphoedema, Lynette E. Barnet
Laser – A Therapeutic Intervention For Controlling Lymphoedema, Lynette E. Barnet
Light Activated Tissue Regeneration and Therapy
No abstract provided.
New Steps Towards An Understanding Of The Mechanisms Behind Photobiomodulation, Lars Hode
New Steps Towards An Understanding Of The Mechanisms Behind Photobiomodulation, Lars Hode
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Techniques For Investigation Of Surgical Cutting Instruments, Eamon Price, Ger Reilly, Brendan Mccormack, Andrew Macey
Techniques For Investigation Of Surgical Cutting Instruments, Eamon Price, Ger Reilly, Brendan Mccormack, Andrew Macey
Conference Papers
No abstract provided.
Neuronal Response To Injury, Rosemary C. Borke, Juanita J. Anders
Neuronal Response To Injury, Rosemary C. Borke, Juanita J. Anders
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Leli For Acute Stroke, Jackson Streeter
Leli For Acute Stroke, Jackson Streeter
Light Activated Tissue Regeneration and Therapy
No abstract provided.
810 Nm Light Therapy Improves Axonal Regeneration And Functional Recovery Following Acute Spinal Cord Injury , K. R. Byrnes, X. Wu, R. W. Waynant, I. K. Ilev, K. Smith, L. Barna, J. J. Anders
810 Nm Light Therapy Improves Axonal Regeneration And Functional Recovery Following Acute Spinal Cord Injury , K. R. Byrnes, X. Wu, R. W. Waynant, I. K. Ilev, K. Smith, L. Barna, J. J. Anders
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Strategies For Improving Peripheral Nerve Regeneration After Severe Lesions: The Potential Role Of Low-Level Laser Therapy, Stefano Geuna
Strategies For Improving Peripheral Nerve Regeneration After Severe Lesions: The Potential Role Of Low-Level Laser Therapy, Stefano Geuna
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Effect Of Low Power 655 And 830 Nm Diode Laser Irradiation On The Neuromuscular Junctions Of Mouse Diaphragm, Renata A. Nicolau, Manel Santafé, Josepa Rigau, Josep M. Tomàs
Effect Of Low Power 655 And 830 Nm Diode Laser Irradiation On The Neuromuscular Junctions Of Mouse Diaphragm, Renata A. Nicolau, Manel Santafé, Josepa Rigau, Josep M. Tomàs
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Metronomic Photodynamic Therapy: Principle To Practice, Stuart K. Bisland
Metronomic Photodynamic Therapy: Principle To Practice, Stuart K. Bisland
Light Activated Tissue Regeneration and Therapy
No abstract provided.
The Significance Of Pulsing In The Stimulation Of Tissue Repair & Regeneration By Light, Mary Dyson
The Significance Of Pulsing In The Stimulation Of Tissue Repair & Regeneration By Light, Mary Dyson
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Novel Fiber Optic Biosensors, J. Mecham, R. Claus, B. Davis, R. W. Waynant , I. K. Ilev, F. J. Arregui , I. R. Matias
Novel Fiber Optic Biosensors, J. Mecham, R. Claus, B. Davis, R. W. Waynant , I. K. Ilev, F. J. Arregui , I. R. Matias
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Effect Of Low Energy Laser Irradiation On The Ischemic Heart, Uri Oron
Effect Of Low Energy Laser Irradiation On The Ischemic Heart, Uri Oron
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Biophotonic Properties Of Cells And Mitochondria, Paul L. Gourley
Biophotonic Properties Of Cells And Mitochondria, Paul L. Gourley
Light Activated Tissue Regeneration and Therapy
No abstract provided.
Photodynamic Tissue Repair And Healing, Michael R Hamblin, Florencia Anatelli, John J. Khadem, Reza Dana, Tayyaba Hasan
Photodynamic Tissue Repair And Healing, Michael R Hamblin, Florencia Anatelli, John J. Khadem, Reza Dana, Tayyaba Hasan
Light Activated Tissue Regeneration and Therapy
No abstract provided.