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Marquette University

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Articles 721 - 723 of 723

Full-Text Articles in Biomedical Engineering and Bioengineering

Multistep Measurement Of Plantar Pressure Alterations Using Metatarsal Pads, An-Hsiung Chang, Ziad U. Abu-Faraj, Gerald F. Harris, Joe Nery, Michael J. Shereff Dec 1986

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 …


Soft X-Rays, William F. Roherty Jun 1950

Soft X-Rays, William F. Roherty

Bachelors’ Theses

Traditionally, radiation of those wavelengths produced by a potential of from 2 to 25kv. has been classified as "Grenz" or "soft" x-rays. The peculiar property of this radiation is its low penetrating power. While being transparent to more energetic radiation, animal tissue and similar materials are sufficiently opaque to Grenz rays as to be studied in detail. Since the radiation is of the continuous type, it can be made soft enough to reveal any object, providing, of course, that the tube window and object medium be not opaque. Soft x-rays are produced in exactly the same manner as others, except …


Calibration Of Pearson Type Eagle Mounting Spectrograph Of 1.5 Meter Length With Grating Lines 15,000 Per Inch, James F. Sullivan May 1949

Calibration Of Pearson Type Eagle Mounting Spectrograph Of 1.5 Meter Length With Grating Lines 15,000 Per Inch, James F. Sullivan

Bachelors’ Theses

The spectrograph which has been calibrated is a Pearson modification of the Eagle mounting. It was originally built for industry but was never set up in a working condition nor was the dispersion of its grating ever calibrated. The ultimate purpose of this thesis was to fulfill the requirements, and to set up the conditions so that the spectrograph could be used for quantitative purposes. This included the measurement of the dispersion of lines performed by the grating, and the recognition of lines of the iron spectrum in order that a quantitative constant could be made.