objective(s): there is controversial evidence about the effect of methamphetamine (meth) on spatial memory. we tested the time- dependent effects of meth on spatial short-term (working) and long-term (reference) memory in meth –sensitized and withdrawn rats in the morris water maze. materials and methods: rats were sensitized to meth (2 mg/kg, daily/5 days, sc). rats were trained in water maze ...

conclusions exposure to formaldehyde vapor can destroy testicular structure and decrease percentages of sperm count and progressive motility. the present study indicated that a reduction in the percentage of progressive motile sperm may be potentiated by noise (700-5700 hz) in the simultaneous exposure to formaldehyde and noise group. thus, it can be anticipated that simultaneous exposure to fo...

There exist several eLearning tools, with varying functionality and purpose. We think that in the coming years we will see many developments and possibilities in the eLearning tools research field. Relatively recent developments that will have a significant impact on eLearning tools are the development of standards for specifying educational material, and the development of methods for construc...

Background: Airport workers are continuously exposed to different levels of radiofrequency microwave (RF/MW) radiation emitted by radar equipments. Radars are extensively used in military and aviation industries. Over the past several years, our lab has focused on the health effects of exposure to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile ...

Die skrywer glo dat opnames onder hoërskoolleerlinge waardevoUe demografiese inligting kan voorsien. Die uitvoerbaarheid hiervan is in die veld getoets. In die bespreking van die bevindings stel die skrywer ’n stelsel vir die registrasie van geboortes en sterftes in nasionale state voor waarin die gemeenskapsverpleegkundige en piaaslikc kliniek gebruik word. Watter wyse van registrasie ook op b...

This article provides both qualitative and quantitative data on practice variation amongst preventive child healthcare professionals in the prevention of child maltreatment in the Netherlands. Qualitative data consist of topics identified during interviews with 11 experts (with quotes), resulting in an online survey. The quantitative data are survey responses from 1104 doctors and nurses workin...

Introduction: The effects of cannabinoids (CBs) on synaptic plasticity of hippocampal dentate gyrus neurons have been shown in numerous studies. However, the effect of repeated exposure to cannabinoids on hippocampal function is not fully understood. In this study, using field potential recording, we investigated the effect of repeated administration of the nonselective CB receptor agonist WIN5...