Most bacteria that swim, including Escherichia coli, are propelled by helical filaments, each driven at its base by a rotary motor powered by a proton or a sodium ion electrochemical gradient. Each ...

Study design: Measurement evaluation of the external and structural components of validity. Objectives: To examine the relationships between quality of life (QOL) as measured by the spinal cord injury ...

Thanks to the development of cochlear implants, many people who would otherwise be quite deaf are able to regain a limited sense of hearing. Unfortunately, the implants also incorporate external ...