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Joined: 2021-10-06

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Biochemistry history

1953 
The Briton FREDERICK SANGER (* 1918) succeeded for the first time in the elucidation of a complete amino acid sequence - domyhomework.club/english-homework/ - of insulin and for this he received his first Nobel Prize in Chemistry in 1955.

In Japan, the rice harvest was seriously threatened by a plant pest, so the authorities feared a famine. At their request to BAYER AG, the insecticide Folidon M was airlifted to Japan. This not only saved the harvest of 1953, but also effectively combated the rice pest. In 1964, Shinto priests erected a monument to the pesticide in gratitude for this.

from 1953 
The German chemist KARL ZIEGLER (1898-1973) discovered new catalysts that made it possible to polymerize ethene even at low pressure. The Italian GIULIO NATTA (1903-1979) found out in 1954 that these catalysts are stereoselective and that it is possible to produce polyethylene or polypropylene with a regular structure. With the industrial use of ZIEGLER-NATTA catalysts , the synthesis of tailor-made plastics with new properties became possible. Even “natural rubber” could be produced synthetically with these stereoselective catalysts.

1954 
American and German researchers took up the principle of the fuel cell for generating energy - need help with my homework , which had been known since 1839 . They constructed functional oxyhydrogen cells that delivered high current densities even at working temperatures below 100 ° C. However, since nuclear energy was still considered to be the energy source of the future at the time, the discovery received little attention.

In the Bell Telephone Laboratories has been silicon solar cell developed for the direct conversion of light into electrical energy.

The Englishman WE STEPHEN discovered a new class of dyes, reactive dyes - chemistry homework solver . These contain reactive groups that form firm covalent bonds with the hydroxyl groups of the cellulose. In this way you get very washable colored textiles.

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