Artturi Ilmari Virtanen (IPA: /ˈɑrtːuri ˈilmɑri ˈvirtɑnen/) (January 15, 1895 – November 11, 1973) was a Finnish chemist and recipient of the Nobel Prize in Chemistry. The International Phonetic Alphabet. ... January 15 is the 15th day of the year in the Gregorian Calendar. ... 1895 was a common year starting on Tuesday (see link for calendar). ... November 11 is the 315th day of the year (316th in leap years) in the Gregorian Calendar, with 50 days remaining. ... 1973 was a common year starting on Monday. ... List of Nobel Prize laureates in Chemistry from 1901 to the present day. ...

Virtanen was born in Helsinki, Finland. He studied the Classical Lyceum at Viipuri, Finland. After that Virtanen studied chemistry, biology, and physics. In 1939 he became Professor of Biochemistry at the Finnish Institute of Technology in Helsinki and at the University of Helsinki in 1939. His research included partially synthetic cattle feeds, nitrogen-fixing bacteria in the root nodules and improved methods of butter preservation. Province Southern Finland Region Uusimaa District Helsinki City manager Jussi Pajunen Official languages Finnish, Swedish Area  - total  - land ranked 342nd 185. ... Not to be confused with the Danish town and county of Viborg in Jutland Viapori, a Finnish transcription of Sveaborg, better known as Suomenlinna castle Vyborg from the tower of the castle Vyborg (transcription of Russian Выборг) is a town with 70,000 inhabitants at Russias border to Finland... The University of Helsinki is a university located in Helsinki, Finland. ...

In 1945 Virtanen became a Nobel Prize Laureate in Chemistry, for his research in agricultural and nutrition chemistry, especially for his fodder preservation method (AIV Fodder). The method – which he had published in 1943 - improved the storage of green fodder that is important during long winters. Process includes adding dilute hydrochloric or sulfuric acid to newly stored grain. Increased acidity stops harmful fermentation and has no adverse effect on the nutritive value of the fodder or animals that eat it. Sir Edward Appletons medal Photographs of Nobel Prize Medals. ...

The asteroid 1449 Virtanen, discovered by the renown Finnish astronomer and physicist Yrjö Väisälä, was named after him. An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... Yrjö Väisälä (September 6, 1891 - July 21, 1971) was a Finnish astronomer and physicist. ...