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Biomedical Engineering and Bioengineering Commons™
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Articles 31 - 35 of 35
Full-Text Articles in Biomedical Engineering and Bioengineering
Artificial Devices As A Viable Alternative To The Conventional Heart Transplant, Hadassah Radzik
Artificial Devices As A Viable Alternative To The Conventional Heart Transplant, Hadassah Radzik
The Science Journal of the Lander College of Arts and Sciences
The human heart is one of the most vital organs in the body. It distributes blood throughout the body, providing the body with oxygen and nutrition, and contributes to metabolism. When the heart fails, blood flow is impaired, thereby limiting the exchange of oxygen within the cardiopulmonary system as well as diminishing oxygenation and nutrition to the other major organs and periphery. The only current proven treatment for advanced heart failure is cardiac transplant. Given the heart’s importance and the scarcity of donated organs, modern medicine has experimented with the creation of an artificial heart. Because the heart is primarily …
La Prueba De Hartmann En Ciencias De La Visión, Yobani Mejía Barbosa
La Prueba De Hartmann En Ciencias De La Visión, Yobani Mejía Barbosa
Ciencia y Tecnología para la Salud Visual y Ocular
En este artículo se muestran tres aplicaciones de la prueba de Hartmann en Ciencias de la Visión, desarrolladas en el laboratorio de diseño óptico del Departamento de Física de la Universidad Nacional de Colombia: lensómetro para lentes de adición progresiva, topógrafo corneal y aberrómetro tipo Hartmann-Shack. Primero se describe brevemente la prueba clásica de Hartmann para espejos astronómicos y luego se presentan tres variaciones de la prueba de Hartmann para optometría yoftalmología. En cada caso se describe el sistema óptico empleado y la geometría para deducir la aberración de frente de onda a partir de las aberraciones de rayo (patrones …
Lente Escleral En Paciente Con Quemadura Ocular Por Álcalis, Carlos Augusto Alfonso Rojas, Rosario Pizza Barrios
Lente Escleral En Paciente Con Quemadura Ocular Por Álcalis, Carlos Augusto Alfonso Rojas, Rosario Pizza Barrios
Ciencia y Tecnología para la Salud Visual y Ocular
Se presenta el caso de un paciente que sufrió una quemadura química ocular con álcalis (cal) en el ojo derecho y que fue tratado por el servicio de córnea y enfermedades externas con inyección subconjuntival de bevacizumab y posterior transplante de células limbales de tipo autólogo. En la evaluación por el servicio de contactología, 4 años después, se presentó agudeza visualisminuida, con astigmatismo irregular alto y aberraciones corneanas de alto orden elevadas que no podían ser corregidas con anteojos; así mismo, en la biomicroscopía se observó conjuntivilización entre las 3 y las 9 en la región superior, con opacidad difusa …
Functional Electrical Stimulation In Spinal Cord Injury Rehabilitation, Meir Hildeshaim
Functional Electrical Stimulation In Spinal Cord Injury Rehabilitation, Meir Hildeshaim
The Science Journal of the Lander College of Arts and Sciences
The following is an excerpt from the introduction to this article: Spinal cord injury is defined as a “disconnection syndrome” that results in a loss of ability of the spinal cord to communicate ascending and/or descending impulses (Hamid and Hayak 2008). Due to its role as the primary conduit of motor and sensory impulses, spinal cord injury is widely regarded as one of the most catastrophic, survivable injuries a person can suffer. Depending on the severity and placement of the injury, the patient can experience a wide range of disability or death. A mild injury may result in the patient …
Decorin Expression, Straw-Like Structure, And Differentiation Of Human Costal Cartilage, Michael W. Stacey, Janna Grubb, Anthony Asmar, Julie Pryor, Hani Elsayed-Ali, Ali Beskok, Diganta Dutta, Annie Fecteau, Alice Werner, Dennis A. Darby, Robert Kelly
Decorin Expression, Straw-Like Structure, And Differentiation Of Human Costal Cartilage, Michael W. Stacey, Janna Grubb, Anthony Asmar, Julie Pryor, Hani Elsayed-Ali, Ali Beskok, Diganta Dutta, Annie Fecteau, Alice Werner, Dennis A. Darby, Robert Kelly
Bioelectrics Publications
Costal cartilage is much understudied compared with the load-bearing cartilages. Abnormally grown costal cartilages are associated with the inherited chest wall deformities pectus excavatum and pectus carinatum resulting in sunken and pigeon chests, respectively. A lack of understanding of the ultrastructural and molecular biology of costal cartilage is a major confounder in predicting causes and outcomes of these disorders. This study analyzed the structure of marginal human costal cartilage (ribs 6-10) through scanning electron and atomic force microscopes and identified the presence of straw-like structures running longitudinally. We also demonstrated that chondrocytes tend to occur singly or as doublets and …