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Tatjana Tanja Milosevic

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332. Dragan Milosevic 5
333. Fatima Jan 5
334. Tatjana Tanja Milosevic 5
335. Ahmed Ayob 5
336. Abhishek Nagwekar 5
last 3 solved tasks
Look carefully caricature and guess the band name.
Look carefully caricature and guess the name of musician.
Film was made in 2006.

Vitamin A

In 1947, the first full synthesis route for vitamin A was found by Dutch chemists, Jozef Ferdinand Arens and David Adriaan van Dorp. Later in 1947, a team headed by O. Isler also synthesized vitamin A using a method more suitable to produce commerical quantities. In 1913, Thomas B. Osborne and Lafayette Mendel had shown experimentally with rats that butter contained a factor responsible for growth development. Their work was confirmed (1913) by Elmer McCullum and Marguerite Davis who also identified a fat-soluble nutrient in butterfat and cod liver oil. It became known as vitamin A, and its chemical structure was determined in 1931 by Paul Karrer.«(Ref Arens and van Dorp, Synthesis of Vitamin A aldehyde, Nature 160: 187, 1947)

Banging

My bloody rude neighbour came over banging on the door at 2.00am last night.

.........Luckily I was still up playing my drums!!
Hat Tip > Roland

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