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Biomedical subjects

R E Garrett

Publications and source records attributed to R E Garrett.

11 recordsLinked to original sources

Comparative evaluation of 6A and 5A chargers for Sonnenschein gel cell batteries used in wheelchairs.

Laboratory tests were conducted to determine suitable battery charges for recharging Sonnenschein dryfit A200 36Ah gel cell batteries. Five commercially made chargers were tested on a standardised pair of batteries and were individually assessed for their ability to satisfy Australian Standards. From these results it was possible to select the chargers usable on Sonnenschein A200 dryfit 36Ah gel cell batteries. The effect of charging regime on battery cycle life was not included.

Electric Power Supplies↗

Comparative evaluation of chargers for wheelchair gel cell batteries.

This study was undertaken as part of our ongoing work to upgrade wheelchair quality. Laboratory tests were conducted to determine which battery chargers would ensure that the user's batteries are fully charged each night and also ensure that the battery lifetime was not diminished. Five commercial chargers were tested on a standardised pair of gel cell batteries of a type commonly used to power wheelchairs. Results of this study indicate a clear preference between chargers. As a result, we have changed the chargers we purchase. We anticipate that our clients will now experience longer life from their wheelchair gel cell batteries.

Electric Power Supplies↗

Testing of gel-electrolyte batteries for wheelchairs.

A simple test rig was developed to measure the capacity of the lead-acid gel-electrolyte batteries used to power wheelchairs. Results of 166 tests revealed a wide scatter of battery life with different users and also showed that, in many cases, the two batteries used in a wheelchair became unequal in charge capacity after some time in use. It is recommended that pairs of batteries should be charged in series to overcome this problem.

Electric Power Supplies↗

Immigration, health status, and physician visits in a Puerto Rican community.

A pilot study was undertaken to explore the effects of geographic migration and exposure to new cultural values and attitudes on rates of physician office visits in a Puerto Rican population in a major Northeastern urban area. A cross-sectional survey study of an immigrant community was performed, using a questionnaire developed to assess the degree of immigrants' adaptation to the dominant culture, self-perceived health status, levels of stress and social support, and attitudes toward Western medical care. A convenience sample of 93 respondents was obtained. Analysis of the data showed that adaptation to the dominant culture, as measured in this study, is as good an independent predictor of high levels of physician office visitation as self-reported health status. In addition, it has a small but significant effect on perceived health. These results suggest that further exploration of the effect of cultural adaptation on health behaviors would be productive for clinicians and health resource managers.

Analysis of Variance↗