Lichen sclerosus and lichen planus are fairly common, non cancerous skin conditions. They can affect different parts of the body, but commonly affect the vulva. When they affect the skin of the vulva, theyâre known as vulval LS or LP.
A gap-graded soil is a soil that has an excess or deficiency of certain particle sizes or a soil that has at least one particle size missing. An example of a gap-graded soil is one in which sand of the No. 10 and No. 40 sizes are missing, and all the other sizes are present.
Sand is a common material found on beaches, deserts, stream banks and other landscapes worldwide. In the mind of most people, sand is a white or tan, fine-grained, granular material.However, sand is much more diverse-even beyond the pink sand beaches of Bermuda or the black sand beaches of Hawaii.These are just a few of the many types of sand.The word sand is actually used for a particle size rather than for a material.. Sand is a loose, granular material with particles that range in size between 1/16 millimeter and 2 millimeters in diameter.he small tan sand grains in this photo are of a fine-grained sand from Qafsah, Tunisia. They are about 1/16 millimeter in diameter-the lower limit for a grain to be called sand size.. The large brown grain is from near Worthing, England.