PURPOSE To study the relationships between the reduction of the useful visual field, age, and driving performance. METHODS Forty-eight subjects, aged from 23 to 77 years performed a test to evaluate the size of their useful visual fields. The test involved the detection and localization of peripheral signals that could appear in an area of 70 degrees of visual angle. The subjects then perform...

We investigate the Ar(+)-Fe asymmetric charge transfer (ACT) reaction using a combination of plasma diagnostics methods and a kinetic model of the afterglow plasma, which allow monitoring of the temporal evolution of the densities of different species. The iron vapor is created inside a discharge cell by cathode sputtering; its density is measured by atomic absorption spectroscopy. The rate coe...

In the examination of disinfectants, the rate of killing of bacteria is implicitly contained in the result, even when that result is expressed in any such standard form as the phenol coefficient. This fact is not apparent and is not generally recognized. Let it be recalled, however, that the time to kill is the basic determination upon which the coefficient, or any other relative measure of eff...

this study proceeded the identity of the shackles of participation pasture manageres about performance projects range- management to central part kohkiloie township. the purpose in this study was to identity of the shackles of participation pasture manageres about performance projects range- management to central part kohkiloie township. the present research is applied research by using descrip...

A quantitative model is presented to describe the formation of volume holograms in a polymeric medium containing photopolymerizable acrylate monomers that undergo spatially modulated gelation as a result of exposure to a visible ‘‘write’’ beam. The model refines the simple diffusion model of Zhao and Mouroulis @J. Mod. Opt. 41, 1929 ~1994!#, by including cure dependence of both the photoreactio...

Purpose: To assess the reliability of neurocognitive and functional performance tests in athletes with and without functional ankle instability (FAI). Methods: In this methodological study, 20 athletes with unilateral functional ankle instability (mean age [SD]: 23.40[2.58] y; mean height[SD]: 1.77[0.11] m; mean weight[SD]: 67.00[13.18] kg) and 20 uninjured athletes (mean age[SD]: 23.05[2.72] ...

This paper deals with the problem of boundary stabilization 1D reaction-diffusion PDEs a time- and space-varying reaction coefficient. The control design relies on backstepping...

OBJECTIVE This study evaluated the diagnostic performance of two methods for the detection of influenza virus in immunocompromised transplant patients. METHODS A total of 475 respiratory samples, 236 from patients in a hematopoietic stem cell transplantation program and 239 from kidney transplant patients, were analyzed by a direct fluorescence assay and the Centers for Disease Control real-t...