Louis H. Ahrens

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Louis H. Ahrens
Mmádu
ụdịekerenwoke Dezie
Ụbọchị ọmụmụ ya24 Eprel 1918 Dezie
Ụbọchị ọnwụ ya5 Septemba 1990 Dezie
Ọrụ ọ na-arụọkà mmụta sayensị Dezie
Louis H. Ahrens

Louis Herman Ahrens (24 Eprel 1918 5 Septemba 1990) bụ onye South Africa a mụrụ geochemist, agụmakwụkwọ, na onye edemede.   A maara ya nke ọma maka ọrụ ya na 1950s n'ịmepụta usoro iji rubidium-strontium dating dị ka ụzọ nke geochronology.

Oge ọ malitere[dezie | dezie ebe o si]

A mụrụ Louis Ahrens na Pietermaritzburg, South Africa n'ọnwa Eprel afọ 1918 ma bụrụkwa nwa ndị ozi ala ọzọ Lutheran na mba ahụ. [1][2] bụ nwa F.W. Ahrens, onye majie distrikti ma soro nna ya gaa South Africa na South-West Africa. [3]'ịbụ onye na-enwetaghị akara ugo mmụta, ọ gara Mahadum Natal wee gụsịrị akwụkwọ na nzere Bachelor of Science na geology na chemistry na 1939. [2] [1][1][2]:: 816  Ọ ga-amalite ọrụ ya na Johannesburg na 1940 na National Institute of Metallurgy (n'oge ahụ Government Metallurgical Laboratory) dị ka onye na-enyocha kemịkal na-ekwusi ike na nyocha anya. [1]'oge a, ọ rụrụ ọrụ na thesis doctorate ya na nyocha nke chemistry spectrochemical nke e nyere na 1944 site na Mahadum Pretoria . [2] [4]'afọ 1945, ọ ghọrọ onye isi na-ahụ maka kemịkalụ na Government Metallurgical Laboratory . [1]

Ọrụ agụmakwụkwọ[dezie | dezie ebe o si]

N'afọ 1946, e nyere ya post doctoral research fellowship site na Council for Scientific and Industrial Research (CSIR) wee gaa mba ofesi na mbụ na-eleta ụlọ nyocha nke Cambridge, Oxford na Durham na mgbe ahụ iji mee nyocha na Massachusetts Institute of Technology's Cabot Spectagraphic Laboratory . [3][2][1]:: 816  N'afọ 1949, o bipụtara akwụkwọ na Bulletin of the Geological Society of America nke guzobere usoro nke iji Rubidium-strontium dating dị ka ụzọ dị irè nke geochronology. N'afọ 1950, mgbe mkpakọrịta ya gwụsịrị, ọ nwetara ọkwa nke Associate Professor of Geochemistry . [3]:: 816  [2] N'afọ 1951, Ahrens bipụtara akwụkwọ banyere omume nke silicate ntụ na d.c arcs.[1][3]

[1] kwagara Mahadum Oxford, England na 1954 wee nweta ọnọdụ dị ka onye na-agụ akwụkwọ na mineralogy ma nyere Lawrence Wager aka imeziwanye nyocha nke geochemical na geochronological nke mahadum ahụ. [1]'ebe ahụ, o mepụtara tebụl ọhụrụ nke radii ion.

[1]'afọ 1956, Ahrens laghachiri South Africa na-ewere oche na kemịkalụ na Mahadum Cape Town ma mepụta ngalaba nke geochemistry dị ka ngalaba dị iche na geology site na 1961 wee ghọọ prọfesọ ya nke geochistry. [1] lara ezumike nká na mahadum na 1978 n'ihi ọrịa mana ọ gara n'ihu na ọrụ dị ka onye nchọpụta pụrụ iche ruo 1983. [3] bụ prọfesọ nleta nke Geochemistry site na 1962 ruo 1963 na MIT na prọfesụ nleta na Mahadum Göttingen na 1961.[1]:: 819  Ọ ga-ebipụta akwụkwọ anọ ma dee ma soro dee ihe karịrị narị akwụkwọ nyocha abụọ.

[5][6]'oge mmemme Apollo, Ahrens na ndị otu nyocha ya na Mahadum Cape Town natara ihe nlele nkume ọnwa maka nyocha geochemical. Nke [7] bụ n'ihi ọrụ o mere na nyocha nke meteorites na 1950s. [6] [2]

Alụmdi na nwunye[dezie | dezie ebe o si]

Ahrens lụrụ Evelyn Millicent McCulloch na 1941. [3] nwere ụmụ atọ, Yolanda, Wendy na Ian . [1]: 819 

Ọnwụ[dezie | dezie ebe o si]

Ahrens nwụrụ na Cape Town, South Africa na Septemba 1990. [2]

Nsọpụrụ[dezie | dezie ebe o si]

  • Captain Scott Memorial Medal - nwa akwụkwọ nsọpụrụ kachasị mma, Geological Society of South Africa (c.1939) [2]
  • Jubilee Gold Medal - usoro strontium nke ikpebi afọ, Geological Society of South Africa (1948) [2]
  • Fellow Royal Institute of Chemistry (1948)
  • Fellow American Association for the Advancement of Science (1950) [8]
  • Third Mineralogical Society of America Award - maka enyemaka na nyocha nke oge ala, Mineralogic Society of America (1953) [2][1][4]
  • [9] nrite South Africa - South African Association for the Advancement of Science (1971) [1]
  • [6][1] isi oche nke abụọ nke International Association of Geochemistry and Cosmochemistry (1972-1975) [1]
  • [6] uru - nyocha na ihe nlele nkume ọnwa, NASA (1980) [1]

Edensibia[dezie | dezie ebe o si]

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 Taylor (1995). "Memorial of Louis H. Ahrens. 1918-1990". American Mineralogist 80 (3–4): 410–411. DOI:10.2138/am-1995-3-423. Taylor, S. Ross (1995). "Memorial of Louis H. Ahrens. 1918-1990" (PDF). American Mineralogist. 80 (3–4): 410–411. doi:10.2138/am-1995-3-423. Kpọpụta njehie: Invalid <ref> tag; name "Taylor" defined multiple times with different content
  2. ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 Erlank (1993-01-01). "LOUIS HERMAN AHRENS FRSSAf". Transactions of the Royal Society of South Africa 48 (2): 381–383. DOI:10.1080/00359199309520282. ISSN 0035-919X. Erlank, Anthony John (1 January 1993). "LOUIS HERMAN AHRENS FRSSAf". Transactions of the Royal Society of South Africa. 48 (2): 381–383. doi:10.1080/00359199309520282. ISSN 0035-919X. Kpọpụta njehie: Invalid <ref> tag; name "Erlank" defined multiple times with different content
  3. ↑ 3.0 3.1 3.2 3.3 3.4 Shrock (1977). Geology at M.I.T., 1865–1965: a history of the first hundred years of geology at Massachusetts Institute of Technology, MIT Press, Cambridge : MIT Press. ISBN 978-0-262-19161-6. Shrock, Robert R. (Robert Rakes) (1977). Geology at M.I.T., 1865–1965: a history of the first hundred years of geology at Massachusetts Institute of Technology. MIT Press. Cambridge : MIT Press. ISBN 978-0-262-19161-6. Kpọpụta njehie: Invalid <ref> tag; name "MIT" defined multiple times with different content
  4. ↑ 4.0 4.1 Larsen (1954-04-01). "Presentation of the mineralogical society of america award to Louis H. Ahrens*". American Mineralogist 39 (3–4): 300–301. ISSN 0003-004X. Larsen, Esper S. Jr. (1 April 1954). "Presentation of the mineralogical society of america award to Louis H. Ahrens*". American Mineralogist. 39 (3–4): 300–301. ISSN 0003-004X. Kpọpụta njehie: Invalid <ref> tag; name "Larsen" defined multiple times with different content
  5. ↑ (August 1972) In the news... South African Scope, Internet Archive (in English), Republic of South Africa. 
  6. ↑ 6.0 6.1 6.2 6.3 Holtzhausen (24 April 1980). "NASA's Tribute to Researcher". South African Panorama 25 (4): 34–35. Holtzhausen, Marlene (24 April 1980). "NASA's Tribute to Researcher". South African Panorama. 25 (4): 34–35 – via Internet Archive. Kpọpụta njehie: Invalid <ref> tag; name "Pan01" defined multiple times with different content
  7. ↑ Dodd (1986). Thunderstones and shooting stars: the meaning of meteorites, Internet Archive, Cambridge Mass. ; London : Harvard University Press. ISBN 978-0-674-89137-1. 
  8. ↑ Historic Fellows. American Association for the Advancement of Science.
  9. ↑ (1 Aug 1971) "Awards". South African Journal of Science 67 (8). 
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