Background: Evidence suggests a relation between short sleep duration and obesity. Objective: We assessed energy balance during periods of short and habitual sleep in normal-weight men and women. Design: Fifteen men and 15 women aged 30–49 y with a body mass index (in kg/m) of 22–26, who regularly slept 7–9 h/night, were recruited to participate in this crossover inpatient study. All participan...

INTRODUCTION Sources of pathogenic Rickettsia in wildlife are largely unknown in Brazil. In this work, potential tick vectors and seroreactivity of small mammals against four spotted-fever group Rickettsia (R. rickettsii, R. parkeri, R. amblyommii and R. rhipicephali) and Rickettsia bellii from peri-urban areas of Uberlândia, a major town in Brazil, are described for the first time. METHODOLO...

Ecotourists appreciate nature and are willing to learn about nature and ecology. Th erefore ecotourism is often seen as a product package that supports sustainable tourism development. Th is study contributes to existing research in the fi eld of ecotourism as it investigates how travel motives and environmental concern of mountain tourists infl uences their actual demand for ecotourism. A surv...

1595. [12] Neukum G. and Wise D. (1976) Science, 194, 1381–1387. [13] Neukum G. and Ivanov B. A. (1994) Hazards Due to Comets and Asteroids (ed. T. Gehrels), 359–416. [14] Chapman C. R. et al. (1996) Icarus, 102, 231–245. 1778.pdf 40th Lunar and Planetary Science Conference (2009)

Biodiesel is an alternative fuel derived from fatty acids in vegetable oils or animal fats. Because it contains almost no sulphur, it burns more cleanly than conventional diesel. However, the chemical reaction that breaks down the fatty acids into fuel relies on an aqueous alkali catalyst such as sodium hydroxide, making the product difficult to separate from the reaction mixture. Robert S. Wat...

This paper explores the institution of apprenticeship in Ghana. A model is presented where apprenticeship training is highly idiosyncratic, increasing an individual's productivity in the current firm, but not in any other firm. Still, individuals are willing to fund apprenticeships as they can reap the returns to the specific training of apprenticeship if they manage to acquire the capital requ...

http://bmj.com/cgi/content/full/332/7538/416 Updated information and services can be found at: These include: References http://bmj.com/cgi/content/full/332/7538/416#BIBL This article cites 16 articles, 14 of which can be accessed free at: Rapid responses http://bmj.com/cgi/eletter-submit/332/7538/416 You can respond to this article at: http://bmj.com/cgi/content/full/332/7538/416#responses fre...

Objectives. Research on populism has progressed over the last decade and several scales have been proposed to measure populist attitudes. None of these validated in context Slovakia, where populists are a long-term part both coalition opposition. This study aimed verify psychometric properties four attitudes that frequently used verified international research, Slovak sample.Participants settin...

4 de Carvalho, M.R. et al. (2007) Taxonomic impediment or impediment to taxonomy? A commentary on systematics and the cybertaxonomicautomation paradigm. Evol. Biol. 34, 140–143 5 Scotland, R. et al. (2003) The Big Machine and the much-maligned taxonomist. Syst. Biodivers. 1, 139–143 6 Maddison, D.R. et al. (2012) Ramping up biodiversity discovery via online quantum contributions. Trends Ecol. E...