What is gangrene?

Sunday, May 17, 2015

   Gangrene is the death and decay of body tissue. There are several kinds of gangrene. The most common kind, called dry gangrene, occurs in the extremities of the body when the supply of blood to a tissue is cut off. As a result, cells in the tissue cannot receive adequate nutrients and cannot get rid of their waste products. The affected area turns dark, then blackens, and slowly dries up and becomes shriveled. It is eventually separated from the healthy surrounding tissue by a sharp line of demarcation, after which the dried-up tissue falls or sloughs off. The most frequent causes of dry gangrene are obstruction of a blood vessel, usually by a clot, and hardening of the arteries, especially in old people and diabetics. It may also occur after fingers or toes have been badly frostbitten and frozen.
   Moist gangrene can affect any tissue in the body. It is caused by certain kinds of bacteria that produce toxins, or poisons, destructive to tissue. There is a foul-smelling watery discharge in the affected area. Another kind of gangrene, called gas gangrene, is also caused by bacteria. The bacteria, which usually infect deep wounds, produce gases that collect in the tissue.
   Gangrene is very serious. Moist gangrene and gas gangrene require prompt treatment. The affected tissue must often be surgically removed to prevent the spread of gangrene to healthy tissue. Antibiotic treatment is sometimes helpful. Dry gangrene does not require emergency surgical treatment. Instead, the physician tries to keep the gangrene from spreading by dilating the blood vessels to improve circulation or by removing obstructions from the vessels. After this the process is allowed to run its natural course until demarcation and sloughing off occur.

George Gascoigne

Sunday, April 19, 2015

   George Gascoigne was an English writer. Born Cardington, England, about 1525. Died Stamford, England, Oct. 7, 1577.
   Gascoigne was a pioneer in English Renaissance literature. A resourceful innovator, he was among the first English writers to use such literary forms as the prose comedy, verse tragedy, verse satire, novel, and critical essay. Gascoigne's The Supposes (1566) is the oldest existing English prose comedy, and his Jocasta (1566) is the second oldest English tragedy in blank verse.
Gascoigne also wrote The Adventures of Master F. J. (1573), which has been called the first English novel. His satiric poem The Steele Glas (1576) was the first original English poem, other than a verse drama, to be written in blank verse. Gascoigne also wrote fine lyric poetry.

Who was Rómulo Gallegos?

Sunday, April 12, 2015

   Rómulo Gallegos was a Venezuelan novelist, educator, and statesman. Born Caracas, Venezuela, Aug. 2, 1884 - April 7, 1969.
   Gallegos' works include some of the finest novels in modern Spanish-American literature. His novels usually take place in the llanos, the vast tropical plains of Venezuela, and they depict a never-ending battle between civilization and barbarism. The most famous of his books are Doña Bárbara (1929) and Cantaclaro (1934).
   In his early life, Gallegos was a teacher. His first novel was El último Solar (1920), later revised and published as Reinaldo Solar (1930). Because he was opposed to the government of the Venezuelan dictator Juan Vicente Gomez, Gallegos went to Spain in voluntary exile in 1931 and stayed there until Gomez' death in 1935. For a time after his return to Venezuela he was minister of education. In 1947 he was elected president, but a military coup the next year removed him from office. During his years of political activity, Gallegos continued to write novels and to direct adaptations of his works for motion pictures.

What is a depressant?

A depressant is a drug that reduces the activity of various body functions. Some depressants such as anesthetics, sedatives, antiepileptics, narcotics analgesics, and some muscle relaxants, slow nervous and muscular activity by acting on the central nervous system. Tranquilizers are depressants that affect only part of the nervous system. They induce relaxation without causing total depression.

Facts about birthstones

Facts about birthstones
Did you know? The current assignation of stones to months was established in 1912