BackgroundObsessive-compulsive disorder (OCD) is a debilitating and prevalent anxiety disorder.Although the basal ganglia and frontal cortex are the brain regions that are most commonly hypothesized to be involved in OCD, the exact pathophysiology is unknown.By observing the effects of proven treatments on brain activation levels, the cause of OCD
Abstract Background Empirically derived food purchase patterns provide information about which combinations of foods were purchased from households.The objective of this study was to identify what kinds of patterns exist, which level of diet quality they represent and which factors are associated with the patterns.Methods The study made use of repr
We may soon face biophysical limits to perpetual growth.Energy supplies may tighten and then begin a long slow descent while defensive expenditures rise to address problems caused by past resource consumption.The outcome may be significant changes in daily routines at the individual and community level.It is difficult to know when this scenario mig
Abstract Drylands are home to over 2 billion people globally, many of whom use the land for agricultural and pastoral activities.These vulnerable livelihoods could be disrupted if desert dunefields become more active in response to climate and land use change.Despite increasing knowledge about the role that wind, moisture availability and vegetatio
Diel dynamics of species richness and fish abundance were studied in three lowland rivers that differed significantly in size (discharge) in to the upper Vistula River drainage system (Poland).Shallow sandy habitats at point bars were repeatedly sampled with beach seining over 24-h periods.Species richness peaked at dusk and then decreased througho