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Biomedical Engineering and Bioengineering Commons™
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- Animal model (1)
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- Bone metastasis (1)
- Breast cancer (1)
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- Cost function (1)
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- Intent recognition (1)
- Linear classification (1)
- Low field NMR (1)
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- Non-anthropomorphic prosthesis design (1)
- Nonlinear feature exrtaction (1)
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- Polyethylene glycol (1)
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- Prosthesis (1)
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Articles 1 - 7 of 7
Full-Text Articles in Biomedical Engineering and Bioengineering
Characterizing Mechanical Regulation Of Bone Metastatic Breast Cancer Cells, Boyuan Liu
Characterizing Mechanical Regulation Of Bone Metastatic Breast Cancer Cells, Boyuan Liu
Doctoral Dissertations
Breast cancer most frequently metastasizes to the skeleton. Bone metastatic cancer is incurable and induces wide-spread bone osteolysis, resulting in significant patient morbidity and mortality. Mechanical stimuli in the skeleton are an important microenvironmental parameter that modulates tumor formation, osteolysis, and tumor cell-bone cell signaling, but which mechanical signals are the most beneficial and the corresponding molecular mechanisms are unknown. This work focused on bone matrix deformation and interstitial fluid flow based on their well-known roles in bone remodeling and in primary breast cancer. The goal of our research was to establish a platform that could define the relationship between …
A Novel Intervention To Prevent Post-Traumatic Osteoarthritis Following Knee Joint Injury, Gerardo E. Narez
A Novel Intervention To Prevent Post-Traumatic Osteoarthritis Following Knee Joint Injury, Gerardo E. Narez
Doctoral Dissertations
The knee joint is the most commonly injured body part in the human body. Injuries as a result of participation in sports, or other recreational activities, often leads to damage to the anterior cruciate ligament (ACL) and meniscus. Injury to these tissues is strongly associated with subsequent knee post-traumatic osteoarthritis (PTOA), which is considered a serious disease because it greatly impacts a patient’s quality of life and significantly increases their risk of premature death. To return stability to the joint, the current clinical treatment is to perform reconstruction of the torn ACL and a meniscal debridement, or meniscectomy, when needed. …
A Generalized Method For Predictive Simulation-Based Lower Limb Prosthesis Design, Mark Price
A Generalized Method For Predictive Simulation-Based Lower Limb Prosthesis Design, Mark Price
Doctoral Dissertations
Lower limb prostheses are designed to replace the functions and form of the missing biological anatomy. These functions are hypothesized to improve user outcome measures which are negatively affected by receiving an amputation – such as metabolic cost of transport, preferred walking speed, and perceived discomfort during walking. However, the effect of these design functions on the targeted outcome measures is highly variable, suggesting that these relationships are not fully understood. Biomechanics simulation and modeling tools are increasingly capable of analyzing the effects of a design on the resulting user gait. In this work, prothesis-aided gait is optimized in simulation …
Predictive Simulation Of Human Movement And Applications To Assistive Device Design And Control, Vinh Nguyen
Predictive Simulation Of Human Movement And Applications To Assistive Device Design And Control, Vinh Nguyen
Doctoral Dissertations
Predictive simulation based on dynamic optimization using musculoskeletal models is a powerful approach for studying biomechanics of human gait. Predictive simulation can be used for a variety of applications from designing assistive devices to testing theories of motor controls. However, one of the challenges in formulating the predictive dynamic optimization problem is that the cost function, which represents the underlying goal of the walking task (e.g., minimal energy consumption) is generally unknown and is assumed a priori. While different studies used different cost functions, the qualities of the gaits with those cost functions were often not provided. Therefore, this dissertation …
Analyses Of Densely Crosslinked Phenolic Systems Using Low Field Nmr, Jigneshkumar Patel
Analyses Of Densely Crosslinked Phenolic Systems Using Low Field Nmr, Jigneshkumar Patel
Doctoral Dissertations
A uniform dispersion of reactants is necessary to achieve a complete reaction involving multi-components, especially for the crosslinking of rigid high-performance materials. In these reactions, miscibility is crucial for curing efficiency. This miscibility is typically enhanced by adding a third component, a plasticizer. For the reaction of the highly crystalline crosslinking agent hexamethylenetetramine (HMTA) with a strongly hydrogen-bonded phenol formaldehyde resin, furfural has been traditionally used as the plasticizer. However, the reason for its effectiveness is not clear. In this doctoral thesis work, miscibility and crosslinking efficiency of plasticizers in phenolic curing reactions are studied by thermal analysis and spectroscopic …
Tissue-Guided Engineering Of Polyethylene Glycol Hydrogels, Lauren Jansen
Tissue-Guided Engineering Of Polyethylene Glycol Hydrogels, Lauren Jansen
Doctoral Dissertations
Polyethylene glycol (PEG) hydrogels are tunable cell culture platforms that recapitulate tissue geometry, water content, and bulk modulus. Despite these benefits, PEG hydrogels elicit an acute immune response, limiting their use in regenerative medicine, and they critically underrepresent the cell-instructive proteins found in the extracellular matrix (ECM). Here, I developed a new class of tissue-specific PEG-based materials and provided biocompatible strategies to improve the user handling and cell viability post-encapsulation when using these hydrogels. I also demonstrated that decreasing the protein fouling to PEG does not decrease the foreign body response to implanted hydrogels, a common misconception in the field. …
Multi-Classifier Fusion Strategy For Activity And Intent Recognition Of Torso Movements, Abhijit Kadrolkar
Multi-Classifier Fusion Strategy For Activity And Intent Recognition Of Torso Movements, Abhijit Kadrolkar
Doctoral Dissertations
As assistive, wearable robotic devices are being developed to physically assist their users, it has become crucial to develop safe, reliable methods to coordinate the device with the intentions and motions of the wearer. This dissertation investigates the recognition of user intent during flexion and extension of the human torso in the sagittal plane to be used for control of an assistive exoskeleton for the human torso. A multi-sensor intent recognition approach is developed that combines information from surface electromyogram (sEMG) signals from the user’s muscles and inertial sensors mounted on the user’s body. Intent recognition is implemented by following …