Young (3-month-old) male Wistar rats showed a relative decrease in heart rate to a sudden silence superimposed on low intensity background noise. This bradycardia was accompanied by immobility behavior. In 26-month-old rats the magnitude of the heart rate response was reduced while immobility behavior remained in the same order of magnitude as in young controls. In the aged rats a shift in auto...

objective: the objectives of the study were to find out the prevalence of depression and to identify associated risk factors among community dwelling elderly in karachi. methods: it was a cross-sectional, descriptive study involving 284 community-dwelling elderly residing in karachi, pakistan. a non-probability convenience sampling was done. the geriatric depression scale (gds-15) was used to a...

Preview Although primary sclerosing cholangitis occurs most often in middle-aged or younger men and primary biliary cirrhosis in middle-aged or older women, the diseases have some traits in common-unfortunate ones. In both diseases, the cause is unknown, and liver transplantation is the only known effective therapy for advanced cases. Dr Fennerty discusses trials of medical treatments used in a...

This study used a video-based hazard perception dual task to compare the hazard perception skills of young drivers with middle aged, more experienced drivers and to determine if these skills can be improved with video-based road commentary training. The primary task required the participants to detect and verbally identify immediate hazard on video-based traffic scenarios while concurrently per...

A source separation program for household kitchen waste has been in place in Beijing since 2010. However, the participation rate of residents is far from satisfactory. This study was carried out to identify residents' preferences based on an improved management strategy for household kitchen waste source separation. We determine the preferences of residents in an ad hoc sample, according to the...

in order to study the effects of organic and inorganic nitrogen sources on quantitative and qualitative characteristics of three winter rapeseed cultivars, a field experiment was carried out as factorial arrangement in complete block design with three replications in agricultural and natural resources research center of markazi province, arak, during 2008-2009 growing season. three rapeseed cul...

first of all, in order to determine the high yielding rapeseed varieties, two field experiments were performed in 2006-2008 cropping seasons in agricultural and natural resources research center of markazi province, arak (34º 5´ n; 49º 42´ e, and 1775 m above sea level), iran. in this research, 15 winter rapeseed varieties were compared in a randomized complete block design with three replicati...