BACKGROUND Head lice infestation affects mainly school-aged children and prevalence varies from region to region. Head lice infestation is of public health concern and screening is integrated into the School Health Programme. OBJECTIVE To determine the prevalence of head lice infestation in primary school-aged children in Port Harcourt, Nigeria. DESIGN Cross-sectional descriptive study. S...

a bstra ct background: effective time management is considered important for managers for achieving the goals in an organization. head nurses can improve their efficiency and performance with effective use of time. there has always been a lot of disagreement in understanding time management behaviors of head nurses; therefore, the present study was conducted with an aim to compare the understan...

We set up two coordinate systems, one in the object space and the other on the computer screen. We introduce six parameters to describe the slice plane, and we formulate the coordinate mapping from the screen to the object space. We designed six alternative algorithms that use the given data to estimate the density at any location in space and produce a slice of a three-dimensional array. Some ...

Prepared standards of halothane in oxygen were analysed using a Pye Series 104 gas chromatograph equipped with a heated head flame ionization detector and gas sampling valve. The adoption of a positive jet voltage expanded the linear dynamic range of the detector to cover the 0.5-9.0% by volume range, provided that a small (0.5-ml) sample loop was used.

Stimulation in the hypothalamus elicits locomotor stepping. Before stepping is initiated, head scanning movements occur. We determined the relationships between the latency of locomotor initiation and the number, extent and direction of the head scanning movements. Chronic stimulation electrodes were stereotaxically implanted in and around the hypothalamus of 29 rats. Under awake conditions, 38...

Visual prostheses for the restoration of functional vision are currently under development. To guide prosthesis research and allow for an accurate prognosis of functional gain, simulating the experience of a retinal prosthesis in healthy individuals is desirable. Current simulation paradigms lack crucial aspects of the prosthetic experience such as realistic head- and eye-position-dependent ima...

This paper describes an investigation into the selection and use of media in teaching Kiswahili Language in secondary schools in Emuhaya, Kakamega County in Kenya. The study was based on a descriptive survey design. The area of study was Emuhaya district, in Kakamega county Kenya. The study population consisted of 22 head teachers, 1333 students and 43 Kiswahili teachers. Saturated sampling was...

The Tradescantia micronucleus (Trad-MCN) bioassay was used to investigate genotoxicity of water bodies in the Parque Municipal Henrique Luís Roessler (PMHLR), a conservation unit in the city of Novo Hamburgo, Southern Brazil, from November 2010 to October 2011. Every month, cuttings with young inflorescences of Tradescantia pallida var. purpurea were exposed for 24 hours to water collected at t...

For many years science educators in Kenyan secondary schools hoped that the use of science apparatus supplied by Science Equipment Production unit (SEPU) would substantially help teachers to provide students with efficient and effective opportunities to learn science, products, and processes. But this has not improved students‟ performances in examinations. Research findings from developed coun...