From : Ravindra Ambekar Mi Marathi Edit Mumbai ••••••••••••••••••••••• George Minot pioneering work on pernicious anemia. Born - December 2, 1885 STS-61 first Hubble Space Telescope servicing mission launched on 2 December 1993 George Richards Minot (December 2, 1885 – February 25, 1950) was an American medical researcher who shared the 1934 Nobel Prize with George Hoyt Whipple and William P. Murphy for their pioneering work on pernicious anemia. Pernicious anemia Pernicious anemia (also known as Biermers anemia, Addisons anemia, or Addison–Biermer anemia) is one of many types of the larger family of megaloblastic anemias. One way pernicious anemia can develop is by loss of gastric parietal cells, which are responsible, in part, for the secretion of intrinsic factor, a protein essential for subsequent absorption of vitamin B12 in the ileum. STS-61 was the first Hubble Space Telescope servicing mission, and the fifth flight of the Space Shuttle Endeavour. The mission launched on 2 December 1993 from Kennedy Space Center in Florida. The mission restored the spaceborne observatorys vision, marred by spherical aberration, with the installation of a new main camera and a corrective optics package. The flight also brought instrument upgrades and new solar arrays to the telescope. With its very heavy workload, the STS-61 mission was one of the most complex in the Shuttles history. It lasted almost 11 days, and crew members made five spacewalks, an all-time record. Even the retrieval of Intelsat VI on STS-49 in May 1992 required only four. The flight plan allowed for two additional EVAs, which could have raised the total number to seven. The final two contingency EVAs were not made. In order to complete the mission without too much fatigue, the five extravehicular working sessions were shared between two alternating shifts of two astronauts.
Posted on: Tue, 02 Dec 2014 04:53:36 +0000
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