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Biomedical Engineering and Bioengineering Commons™
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Articles 61 - 75 of 75
Full-Text Articles in Biomedical Engineering and Bioengineering
Protein Engineering Of Luciferase To Enhance Bioluminescent Properties, Charles Schwab, Peter Wittig
Protein Engineering Of Luciferase To Enhance Bioluminescent Properties, Charles Schwab, Peter Wittig
Bioengineering Senior Theses
Bioluminescence is the ability of naturally occurring organisms to emit light. Many instances of bioluminescence have been identified ranging from fireflies to bacteria. The protein responsible for bioluminescence in all of these organisms is luciferase. The exact function and structure of this protein are still unknown to this day. This project aims at better understanding luciferase as well as enhancing its bioluminescent properties. In order to work with luciferase, we had to isolate all of the genes necessary for bioluminescence. The six genes necessary for bioluminescence are Lux A,B,C,D,E,G. We isolated each of these genes from original bacterial DNA. We …
Bioengineered Hearts, Rivky Loeb
Bioengineered Hearts, Rivky Loeb
The Science Journal of the Lander College of Arts and Sciences
Heart disease is one of the highest causes for fatality in the world. Although many such diseases can be treated by a heart transplant, this in itself can cause countless problems. Aside from the high demand for donor hearts, there is the risk of the patient’s immune system rejecting the transplanted heart. A bioengineered heart would reduce the need for donor hearts, and thus save countless lives. Finding a suitable scaffold, obtaining appropriate cells, and ensuring that the tissue will function properly are the main focuses in creating an artificial heart. While most of the studies done have been concentrated …
The Trm2h : Detecting Protein-Protein Interactions By Engineering The Cell As A Biosensor, Elyse Shimomura, Paulina Perezalonso
The Trm2h : Detecting Protein-Protein Interactions By Engineering The Cell As A Biosensor, Elyse Shimomura, Paulina Perezalonso
Bioengineering Senior Theses
Protein-protein interactions regulate key cellular functions and cell signaling pathways in the body; biological systems can be disrupted by protein interactions or lack of interactions that cause cell dysfunction and can lead to disease or illness. However, studying these interactions is complex and difficult to quantify. In this project, we examine the interaction of two putative cancer biomarkers, Bax and PDCDS, using the tetracycline repressor-based mammalian two-hybrid system (trM2H). This in vivo system engineers the cell as a biosensor using methods of DNA cloning and mammalian cell transfections that easily detects and quantities the interaction of two proteins by the …
Analyzing Surface Protein Expression And Internalization, William Truong, Josergio Zaragoza
Analyzing Surface Protein Expression And Internalization, William Truong, Josergio Zaragoza
Bioengineering Senior Theses
G-protein coupled receptors (GPCRs) are currently the largest class of membrane receptors and are targeted by a majority of the modern drug therapeutics. In addition, they partake in many physiological and pathological processes such as inflammation, growth, and hormone responses. Most importantly, GPCRs are targets of many disease-specific pathways such as Alzheimers, hypertension, leukemia, and depression. As a result, there is an immense interest in studying GPCRs as this area provides further knowledge into the specific disease pathways and allows the discovery of novel therapeutics. In order to have a better understanding of pathways, scientists have studied GPCR activation. The …
Amperometric Detection Of Bioamines In Cancer Borealis Using Microchip Capillary Electrophoresis Integrated With Micellar Chromatography, Ajay Fernandez, Jason Howard, Christina Shuh
Amperometric Detection Of Bioamines In Cancer Borealis Using Microchip Capillary Electrophoresis Integrated With Micellar Chromatography, Ajay Fernandez, Jason Howard, Christina Shuh
Bioengineering Senior Theses
In order to study neuromodulation in Cancer borealis, commonly known as the Jonah crab, we designed a microchip capillary electrophoretic (CE) device with micellar electrokinetic chromatography (MEKC) to separate bioamines and detect their concentrations using amperometric detection (AD). The analysis will be used to characterize the bioamines: dopamine, octopamine, tyramine, serotonin, norepinephrine, and gammaaminobutyric acid (GABA). The device measures the concentration of bioamines in microdialysate samples taken directly from the pericardial cavity of the crab. The research on Jonah crabs will be applied to enhance our understanding of the crab neurology. Since the structure and in some instances, the function …
Microfluidic Detection Of Arsenic Contamination In Groundwater, Mary Reynolds, Kyle Perricone
Microfluidic Detection Of Arsenic Contamination In Groundwater, Mary Reynolds, Kyle Perricone
Bioengineering Senior Theses
The difficulty of detecting small quantities of arsenic in water currently threatens the health of millions of people worldwide, as long-term exposure to arsenic has been associated with both cancerous and noncancerous health risks. Existing technologies make it possible to very accurately quantify arsenic levels in water; however the expense, extensive training, and off-site analysis required by these methods impede wide scale use. Here, we report on research to develop an affordable and point-of-use microfluidic platform capable of detecting trace amounts of arsenic in groundwater samples. We intend this device to meet the World Health Organization's (WHO's) ASSURED criteria for …
Biological Engineering: Advances And Methods, Joel Schwartz
Biological Engineering: Advances And Methods, Joel Schwartz
The Science Journal of the Lander College of Arts and Sciences
The last few decades have seen a tremendous growth in the field of bioengineering. As the need for further treatment and innovation for tissue repair, partial to full organ replication, and gene therapy continues to increase, the field of bioengineering will be tasked with curing and preventing disease and traumatic injuries. The two primary fields currently being focused on in the lab are the way cells interact and communicate to build tissues, and the nature and materials utilized in scaffolding to allow differentiation and migration when cells are seeded. Within those two fields are subsets of different methods, materials that …
Methods Development And Force Field Evaluation For Molecular Simulations Of Interactions Between Structured Peptides And Functionalized Material Surfaces, Galen Collier
All Dissertations
The process of protein adsorption to material surfaces is highly complex and it is one of the most fundamental concepts upon which progress in the field of bioengineering is based. The strategic design of material surfaces for optimal utility in specific biological environments is absolutely dependent upon a thorough understanding of the mechanisms underlying protein adsorption, yet there is still a very limited understanding of these mechanisms. The primary reason for this lack of understanding is that protein adsorption is a dynamic process which occurs at the atomic and macromolecular scale, where experimental analyses provide a view that is static …
Characterising 3d Soft Tissue Features On Joint Surfaces, Colm O'Kane
Characterising 3d Soft Tissue Features On Joint Surfaces, Colm O'Kane
Conference Papers
A crucial aspect of orthopaedic implant design is the prediction of surgical outcomes when the shape of a bone is necessarily altered by the addition of the implant. Matching native kinematics as closely as possible is generally considered a core aim of joint replacement surgery. The overall hypothesis behind this research is that soft tissue geometry, including cartilage thickness distribution and ligament attachment sites, influences kinematics in the knee joint. In order to enable investigation of possible links between geometry and kinematics, the ability to characterise the shape variation of the soft tissue relative to the underlying bony geometry must …
Characterising 3d Soft Tissue Features On Joint Surfaces, Colm O'Kane
Characterising 3d Soft Tissue Features On Joint Surfaces, Colm O'Kane
Other resources
A crucial aspect of orthopaedic implant design is the prediction of surgical outcomes when the shape of a bone is necessarily altered by the addition of the implant. Matching native kinematics as closely as possible is generally considered a core aim of joint replacement surgery. The overall hypothesis behind this research is that soft tissue geometry, including cartilage thickness distribution and ligament attachment sites, influences kinematics in the knee joint. In order to enable investigation of possible links between geometry and kinematics, the ability to characterise the shape variation of the soft tissue relative to the underlying bony geometry must …
Links With Canada Benefit Dit Prosthesis Research, Colm O'Kane
Links With Canada Benefit Dit Prosthesis Research, Colm O'Kane
Articles
Colm O’Kane is a lecturer in the School of Manufacturing and Design Engineering and a member of the DIT Biomedical Device and Assistive Technology Research Group. He is currently engaged in PhD research in the field of knee prosthesis development, focused on developing optimised strategies for partial and total joint replacements used in treatment of osteoarthritis of the knee joint. This article is an account of a research scholarship sponsored by the CHC Helicopter Corporation and awarded by the Ireland Canada University Foundation (ICUF). This foundation awards annual scholarships for research visits between Ireland and Canada with the aspiration of …
Estimation Of 3d Shape In The Patellofemoral Joint Using Statistical Shape Models And 2d Data, Colm O'Kane
Estimation Of 3d Shape In The Patellofemoral Joint Using Statistical Shape Models And 2d Data, Colm O'Kane
Conference Papers
Disorders of the patellofemoral joint (PFJ) including PF osteoarthritis and PF pain disorder have been estimated to represent 25% of all patients presenting for knee joint treatment. The diagnosis and treatment of these disorders is curtailed by lack of understanding of the mechanical operation of the joint. A crucial aspect to be considered in understanding contact patterns and kinematics of the PFJ is the alignment of the patella in the trochlear groove. Investigation of patellar alignment necessitates accurate knowledge of the 3D articular surfaces of both patella and femur, along with underlying bone geometry. These 3D data are generally obtained …
Beyond Biobricks: Synthesizing Synergistic Biochemical Systems From The Bottom-Up, Mark A. Bedau
Beyond Biobricks: Synthesizing Synergistic Biochemical Systems From The Bottom-Up, Mark A. Bedau
Systems Science Friday Noon Seminar Series
Engineers who attempt to discover and optimize the behavior of complex biochemical systems face a dauntingly difficult task. This is especially true if the systems are governed by multiple qualitative and quantitative variables that have non-linear response functions and that interact synergistically. The synthetic biology community has responded to this difficulty by promoting the use of "standard biological parts" called "BioBricks", which are supposed to make biology into traditional engineering and enable engineers to "program living organisms in the same way a computer scientists can program a computer". But the BioBricks research program faces daunting hurdles, because the nonlinearity and …
Transfer Function Modelling: A Student-Centred Learning Approach, Aidan O'Dwyer
Transfer Function Modelling: A Student-Centred Learning Approach, Aidan O'Dwyer
Conference papers
Traditionally, the modelling of real systems in engineering, using transfer functions, has been done in a mathematically intense manner. However, non-traditional learners such as mature students, part-time students and students without a conventional second-level educational background may not have strong mathematical foundations; in addition, all students increasingly expect technical work which is practical and which motivates independent learning. This paper reports on, reflects on and evaluates an innovative experiment developed by the author to estimate a transfer function model of a person’s eye-brain-hand motor response. In the experiment, carried out using a PC with data acquisition capability, the person is …
The Import Of Importing And Unnatural Acts: The Political Psychology Of Bioengineered Plants, Ibpp Editor
The Import Of Importing And Unnatural Acts: The Political Psychology Of Bioengineered Plants, Ibpp Editor
International Bulletin of Political Psychology
This article describes political psychological aspects of opposition to the importing of bioengineered plants.