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Biomedical Engineering and Bioengineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
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Articles 601 - 604 of 604
Full-Text Articles in Biomedical Engineering and Bioengineering
A Review Of Prosthetic Interface Stress Investigations, Barbara Silver-Thorn, John W. Steege, Dudley S. Childress
A Review Of Prosthetic Interface Stress Investigations, Barbara Silver-Thorn, John W. Steege, Dudley S. Childress
Biomedical Engineering Faculty Research and Publications
Over the last decade, numerous experimental and numerical analyses have been conducted to investigate the stress distribution between the residual limb and prosthetic socket of persons with lower limb amputation. The objectives of these analyses have been to improve our understanding of the residual limb/prosthetic socket system, to evaluate the influence of prosthetic design parameters and alignment variations on the interface stress distribution, and to evaluate prosthetic fit. The purpose of this paper is to summarize these experimental investigations and identify associated limitations. In addition, this paper presents an overview of various computer models used to investigate the residual limb …
Estimation Of The Pulmonary Capillary Transport Function In Isolated Rabbit Lungs., Said H. Audi, J H. Linehan, Gary S. Krenz, C A. Dawson, S B. Ahlf, David L. Roerig
Estimation Of The Pulmonary Capillary Transport Function In Isolated Rabbit Lungs., Said H. Audi, J H. Linehan, Gary S. Krenz, C A. Dawson, S B. Ahlf, David L. Roerig
Biomedical Engineering Faculty Research and Publications
Recently, we presented a method for estimating the pulmonary capillary volume and transport function based on the use of a reference indicator and two or more indicators that rapidly equilibrate (radially) with the tissue (i.e., the concentrations in the vascular and extravascular spaces at a given axial location are in equilibrium) during transit through the capillaries in a bolus-injection indicator dilution method (S. H. Audi, G. S. Krenz, J. H. Linehan, D. A. Rickaby, and C. A. Dawson. J. Appl. Physiol. 77: 332-351, 1994). The objectives of the present study were 1) to determine whether [14C]diazepam …
Non‐Rayleigh Statistics Of Ultrasonic Backscattered Echo From Tissues, V. Manjo Narayanan, Robert C. Molthen, P. M. Shankar, J. M. Reid
Non‐Rayleigh Statistics Of Ultrasonic Backscattered Echo From Tissues, V. Manjo Narayanan, Robert C. Molthen, P. M. Shankar, J. M. Reid
Biomedical Engineering Faculty Research and Publications
The envelope of the backscattered signal from tissues can exhibit non‐Rayleigh statistics if the number density of scatterers is small or if the variations in the scattering cross sections are random. The K distribution which has been used extensively in radar, is introduced to model this non‐Rayleigh behavior. The generalized K distribution is extremely useful since it encompasses a wide range of distributions such as Rayleigh, Lognormal, and Rician. Computer simulations were conducted using a simple one‐dimensional discrete scatteringmodel to investigate the properties of the echo envelope. In addition to cases of low number densities, significant departures from Rayleigh statistics …
Multistep Measurement Of Plantar Pressure Alterations Using Metatarsal Pads, An-Hsiung Chang, Ziad U. Abu-Faraj, Gerald F. Harris, Joe Nery, Michael J. Shereff
Multistep Measurement Of Plantar Pressure Alterations Using Metatarsal Pads, An-Hsiung Chang, Ziad U. Abu-Faraj, Gerald F. Harris, Joe Nery, Michael J. Shereff
Biomedical Engineering Faculty Research and Publications
Metatarsal pads are frequently prescribed for nonoperative management of metatarsalgia due to various etiologies. When appropriately placed, they are effective in reducing pressures under the metatarsal heads on the plantar surface of the foot. Despite the positive clinical reports that have been cited, there are no quantitative studies documenting the load redistribution effects of these pads during multiple step usage within the shoe environment. The objective of this study was to assess changes in plantar pressure metrics resulting from pad use. Ten normal adult male subjects were tested during a series of 400-step trials. Pressures were recorded from eight discrete …