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First helium-filled rigid airship to fly: was the USS Shenandoah on August 20, 1923, although it did not make a powered flight until September 24, 1923. [30] First people to reach the stratosphere: were Auguste Piccard and Paul Kipfer, who ascended to the height of 51,000 ft (15,500 m) in a hydrogen balloon on May 27, 1931. [31]
A person who performs a phlebotomy is called a phlebotomist, although most doctors, nurses, and other technicians can also carry out a phlebotomy. [2] In contrast, phlebectomy is the removal of a vein. Phlebotomies that are carried out in the treatment of some blood disorders are known as therapeutic phlebotomies. [3]
Louise Joy Brown (born 25 July 1978) is an English woman noted as the first human born following conception by in vitro fertilisation (IVF). Her birth, following a procedure pioneered in Britain, has been lauded among "the most remarkable medical breakthroughs of the 20th century".
Therapeutic phlebotomy refers to the drawing of a unit of blood in specific cases like hemochromatosis, polycythemia vera, porphyria cutanea tarda, etc., to reduce the number of red blood cells. [ 6 ] [ 7 ] The traditional medical practice of bloodletting is today considered to be a pseudoscience .
In 1930, Blériot himself instituted the Blériot Trophy, a one-time award which would be awarded to the first aircrew to sustain an average speed of over 2,000 kilometers per hour (1,242.742 miles per hour) over one half of an hour, an extremely ambitious and prophetic target in an era when the fastest aircraft were just breaking the 200 mph mark.
Formal training and recognition of African-American women began in 1858 when Sarah Mapps Douglass was the first black woman to graduate from a medical course of study at an American university. [1] Later, in 1864 Rebecca Crumpler became the first African-American woman to earn a medical degree. The first nursing graduate was Mary Mahoney in 1879.
In 1973, the Federation of Fly Fishers awarded Grant the Buz Buszek Memorial Award-an award plaque presented annually to that person who has made significant contributions to the arts of fly tying. [4] In 1947, Grant married Annabell Thomson, and opened his own tackle shop that same year. Grant's Fly Shop was in operation until 1951.
Louise Joy Brown, the first test-tube baby, was born on 25 July 1978, [1] [2] and Purdy was the first to see the embryonic cells dividing. [ 3 ] Edwards was awarded the 2010 Nobel Prize in Physiology or Medicine for his work on the development of in vitro fertilisation; however, because the Nobel Prize is not awarded posthumously, neither Purdy ...