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Delta Sigma Theta Sorority, Inc. ( ΔΣΘ) is a historically African American sorority. The organization was founded by college-educated women dedicated to public service with an emphasis on programs that assist the African American community. Delta Sigma Theta was founded on January 13, 1913 by twenty-two women at Howard University in ...
Apex, North Carolina. / 35.71972°N 78.84389°W / 35.71972; -78.84389. Apex ( / ˈeɪ.pɛks /) is a town in Wake County, North Carolina, United States. At its southern border, Apex encompasses the community of Friendship. In 1994, the downtown area was designated a historic district, and the Apex train depot, built in 1867, is ...
Robert Johnson (May 8, 1911, Hazlehurst, Mississippi – August 16, 1938). Singer-songwriter and guitarist, recognized since the 1960s as a master of Delta blues and an important influence on many rock musicians. [25] Tommy Johnson (1896, near Terry, Mississippi – November 1, 1956). Guitarist, singer-songwriter.
In dental anatomy, the apical foramen, literally translated "small opening of the apex," is the tooth's natural opening, found at the root's very tip—that is, the root's apex—whereby an artery, vein, and nerve enter the tooth and commingle with the tooth's internal soft tissue, called pulp. Additionally, the apical foramen is the point ...
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As it extends further offshore, the channel slope will decrease and its bed will aggrade, promoting an avulsion. In sedimentary geology and fluvial geomorphology, avulsion is the rapid abandonment of a river channel and the formation of a new river channel. Avulsions occur as a result of channel slopes that are much less steep than the slope ...
Dominance hierarchy. A high-ranking male mandrill advertises his status with bright facial coloration. [1] In the zoological field of ethology, a dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social groups interact, creating a ranking system.
The curvature varies from a maximum at the apex to zero at a crossing point (straight line), also called an inflection, because the curvature changes direction in that vicinity. The radius of the loop is the straight line perpendicular to the down-valley axis intersecting the sinuous axis at the apex. As the loop is not ideal, additional ...