In Syria, weapons have become commonplace and children are exposed to constant violence.
Although studies have shown that being exposed to constant bright light is unhealthy for premature infants, the researchers said they wanted to see what would occur if they used light to simulate night and day.
The fish were exposed to constant light in tanks until they were about 22 months old when they were stocked into outdoor spawning ponds with spawning containers.
The inner surface attached with an annular metallic foam layer was exposed to constant heat flux while the outer surface was adiabatic.
These estimates do not include the costs of acquiring land, nor the expense of maintaining a fence that is exposed to constant efforts by illegal crossers to bore through it or under it or to bring it down.
Uneducated for the most part and often trapped by debt, the region's child workers earn as little as £1 per day and are exposed to constant dust, fumes and gas at work.
Small and constricted, a place where the vital necessities, sacred and profane, were within walking range of all and where one's conduct was exposed to constant public watch, the New England village was the prime mover of communal life.
A model who provoked a fierce debate when she was classed as plus size in a Calvin Klein advert has written an essay on how she perceives her body after being exposed to constant scrutiny.
Being exposed to constant, relentless irradiation by that funhouse reality, forever aswim in a sea of lies, had made people lethargic and apathetic, cynical and fatalistic, dumbfounded into mute infantilism, drunkenness, and helpless rage in the meagreness of their tiny private, personal worlds.
