abstract treating soil with insecticides is thought to be an effective method for termite control. speed of action and repellency of insecticides are important factors for discussing their barrier effects as soil-treatment termiticide. microcerotermes diversus (silvestri) is the most economically destructive termite in structures in ahwaz region, because the species feed on anything with cellul...

O ver the past century, human population has expanded rapidly, much to the detriment of many other species that coinhabit the earth. There are roughly four times as many people alive now as there were in 1900. Economic activity has increased even more rapidly than population as evidenced by rising standards of living in most parts of the world. The vast expansion of human activity has led to wi...

background: although cockroaches are mechanical vector of many pathogens, still biological transmission of pathogens via these insects is controversial. more covenant immune defense in the hemolymph of cockroaches may take this ad­vantage to block any adaptation of pathogens regarding to biological transmission. lectin molecules in hemolymph of in­sects play as mediators of nonself recognition,...

the aim of this study was to examine whether formal and informal social activities are associated with a lower risk of depression. besides, we investigated which type of social activities may protect against late-life depression by gender using data from a population-based study of older korean adults.data for analysis were drawn from the 2010 korean longitudinal study of aging. study sample in...