background and objective: needle stick injuries (nsis) are a common potential risk for healthcare workers. the aim of this study was to evaluate preventive interventions against needle stick injury incidents among hcws.   methods: seven hospitals in the iranian chaharmahal-va-bakhtiari province were surveyed between march 2008 to march 2013. data of the needle stick injuries of healthcare worke...

statement of problem: fracture strength of a denture base resin is of great concern, and many approaches have been used to strengthen acrylic resin dentures. purpose: the aim of this study was to measure the transverse strength of a heat polymerized acrylic resin, after reinforcement with metal wire and two types of glass fibers. materials and methods: forty rectangular specimens (65.0×10.0×3.3...

Water droplets released from the sea surface represent one of major causes ice accretion on marine vessels. A one-dimensional model freezing a spherical water droplet moving in cold air was developed. The crystallization allows to obtain an analytical solution if uniform temperature distribution over liquid’s core is assumed. validated using STAR CCM+ Computational fluid dynamics (CFD) code. co...

Water detection is one of the most crucial psychological processes for many animals. However, nobody knows the perception mechanism of water through our tactile sense. In the present study, we found that a characteristic frictional stimulus with large acceleration is one of the cues to differentiate water from water contaminated with thickener. When subjects applied small amounts of water to a ...

The present study investigates the hypothesis of a synchronization between the extremum (apex) of the pointing gesture and the apex of the jaw opening gesture for the stress vowel in 'CVCV vs CV'CV utterances in a deictic task (consisting in showing a target while naming it). The results show that for 'CVCV sequences (e.g. /pápa/) the pointing apex tends to be phased with the jaw apex for the f...

Mit der vorliegenden Arbeit wird eine Verbesserung des MAGIC (Manual And Gaze Input Cascaded) Pointing vorgestellt. Die Idee hinter dem MAGIC-Pointing ist die Positionierung des Mauszeigers auf die Blickposition auf dem Bildschirm bei der ersten Bewegung der Maus nach einer Ruhephase. Die Problematik beim MAGIC-Pointing liegt darin, dass die initiierte Mausbewegung dazu führt über das Ziel hina...

Stick balancing at the fingertip is a powerful paradigm for the study of the control of human balance. Here we show that the mean stick balancing time is increased by about two-fold when a subject stands on a vibrating platform that produces vertical vibrations at the fingertip (0.001 m, 15-50 Hz). High speed motion capture measurements in three dimensions demonstrate that vibration does not sh...

Agri-environmental programs, such as the Environmental Quality Incentives Program, provide payments to livestock and crop producers to generate broadly defined environmental benefits and to help them comply with federal water quality regulations, such as those that require manure nutrients generated on large animal feeding operations to be spread on cropland at no greater than agronomic rates. ...