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6061 sheet in the T4 condition can be formed with limited ductility in the cold state. For deep draw and complex shapes, and for the avoidance of spring-back, an aluminium hot stamping process ( Hot Form Quench ) can be used, which forms a blank at a elevated temperature (~ 550 C) in a cooled die, leaving a part in W-temper condition before ...
Technician fourth grade (abbreviated T/4 or Tec 4) was a rank of the United States Army from 1942 to 1948. [1] The rank was created to recognize enlisted soldiers with special technical skills, but who were not trained as combat leaders.
The heat deflection temperature or heat distortion temperature (HDT, HDTUL, or DTUL) is the temperature at which a polymer or plastic sample deforms under a specified load. [1] This property of a given plastic material is applied in many aspects of product design, engineering and manufacture of products using thermoplastic components.
DNA ligase is a type of enzyme that facilitates the joining of DNA strands together by catalyzing the formation of a phosphodiester bond.It plays a role in repairing single-strand breaks in duplex DNA in living organisms, but some forms (such as DNA ligase IV) may specifically repair double-strand breaks (i.e. a break in both complementary strands of DNA).
This is a list of airports in Florida (a U.S. state), grouped by type and sorted by location.It contains all public-use and military airports in the state. Some private-use and former airports may be included where notable, such airports that were previously public-use, those with commercial enplanements recorded by the FAA or airports assigned an IATA airport code.
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Beginning on February 14, 1991, demonstration of proficiency in Morse code telegraphy was removed from the Technician license requirements. [ 14 ] [ 15 ] Because International Telecommunication Union (ITU) regulations still required proficiency in Morse telegraphy for operation below 30 MHz, new Technicians were allowed all modes and bands ...
Minimum temperature map of the United States from 1871–1888 Maximum temperature map of the United States from 1871–1888. The following table lists the highest and lowest temperatures recorded in the 50 U.S. states, the District of Columbia, and the 5 inhabited U.S. territories during the past two centuries, in both Fahrenheit and Celsius. [1]