We studied the effects of acetylcholinesterase inhibitors, donepezil and galantamine, and an N-methyl-D-aspartate (NMDA) receptor blocker, memantine, on sleep-wake architecture in rats. Screw electrodes were chronically implanted into the frontal and parietal cortex for the electroencephalography (EEG). EEG was recorded with a bio-potential amplifier for 8 h from 09:30 to 17:30. Vibration was r...

In the interest of providing more effective evaluations of impact wrench vibration exposures and the development of improved methods for measuring vibration emissions produced by these tools, this study focused on three variables: acceleration measured at the tool surface, vibration exposure duration per test trial, and the amount of torque required to unseat the nuts following a test trial. Fo...

Whole body vibration has received much attention as an innovative approach to exercise, lead ing to constantly increasing attention from the scientific community. Previous research considering occupational vibration has illustrated the risks associated with high levels of exposure to vibration; however during vibrat ion exercise the exposure duration is much shorter and therefore the potential ...

Despite the expanding use of Whole Body Vibration training among athletes, it is not known whether adding Whole Body Vibration training to the conventional training of sprint-trained athletes will improve speed-strength performance. Twenty experienced sprint-trained athletes (13 male symbol, 7 female symbol, 17-30 years old) were randomly assigned to a Whole Body Vibration group (n=10: 6 male s...

A longitudinal study of hearing loss was conducted among a group of lumberjacks in the years 1972 and 1974--8. The number of subjects increased from 72 in 1972 to 203 in 1978. They were classified according to (1) a history of vibration-induced white finger (VWF), (2) age, (3) duration of exposure, an (4) duration of ear muff usage. The hearing level at 4000 Hz was used to indicate the noise-in...

Aryepiglottic (AE) trilling in the pharyngeals of Iraqi Arabic is observed, qualified and quantified using acoustic, EGG, kymographic, high-speed laryngoscopic and aperture estimate techniques. Articulatory stricture occurs at the superior AEfold borders of the epilaryngeal tube. Periodic AE vibration acts as a secondary phonation source. Quantitative evaluation of trilling frequency and durati...

Luna recently demonstrated a novel optical phase-based algorithm for removing the adverse effects of fiber motion at frequencies far above the scan rate on high-resolution measurements of Rayleigh scatter using Optical Frequency Domain Reflectometry (OFDR) for static strain and temperature measurements. By comparing dynamic OFDR Rayleigh scatter measurements to a static reference, it is possibl...

This paper presents a numerical method in open-loop-control for rapidly moving a flexible mechanical system with no or minimum residual vibration. The theoretical model is particularly concerned with the optimization of the input forcing laws to suppress vibration and to get accurate positioning of the system. This method generates a shaped command input based on a limited number of constant ac...

Regular whole body vibration training, i.e. standing on a platform that vibrates at a high frequency over a small amplitude, has been reported to produce neuromuscular adaptation and increase bone mineral density in some frailer populations [1]. As such, it has attracted interest for its potential benefits regarding physical function, fall and fracture risk in older people. These potential bene...