The presence of this complication together with the lack of visibility on plain radiographs gives reason for concern.
For most of the year, visibility over the scrubland plains of the area is so poor that, beyond a few hundred yards, all detail is lost behind a thick gray curtain of eye-stinging haze.
They can be chromed, with fancy covers, or plain painted ones, and will help with visibility when driving in poor weather.
Combined with strong winds, blowing and drifting of snow is likely across a large region of the Northern Plains and Upper Midwest, as well as significantly reduced visibility.
What is the visibility of the warning labels on original and plain packages?
Further, we explored the visibility of the warning labels on original and plain packages.
Survey techniques commonly used by archaeologists in more arid, high-visibility areas aren't useful in the Chengdu Plain because surface materials are obscured by the ongoing agricultural uses of the land.
Alex Cunningham, the Labour MP for Stockton North and a vocal campaigner for plain packaging, said the move appeared to be a ploy to prolong the visibility of Marlboro's brand in the UK.
However, in the Mesopotamian plain and in the cultivated fields of rainfed Upper Mesopotamia, alluviation, vegetation, and erosion reduce archaeological visibility to a much greater degree, which makes it difficult to identify pastoral nomadic sites.
Regardless of visibility conditions, regardless of whether they are in thick forest or on an open plain, whether outside or indoors or even in caves, whether stationary or moving, they have a spot-on sense of direction.
Across the northern plains in the US 20-25cm of snow fell on Monday bringing snow-packed roads and limited visibility.
