Della Martin Roy

Della Marie Martin Roy (1926-2021) bụ onye sayensị ihe onwunwe nke America nke rụrụ ọrụ ihe karịrị afọ 50 na Mahadum Pennsylvania State. Ọ bụ "onye ndu mba ụwa n'ọhịa nke simenti na nyocha simenti",  gụnyere mbelata nke ikuku na-ekpo ọkụ site na mmepụta simenti;  a makwaara ya maka ọrụ ya na mkpofu radiation, na ojiji ụlọ ọrụ na-eji ngwaahịa ọkụ coal nwetara dị ka ihe mkpofu site na usoro ndị ọzọ, na ụzọ maka ịgbanwe coral ka ọ na-echekwa ọdịdị nwere oghere, na itinye ya n'ọrụ nke coral gbanwere na ọgwụ.  

A mụrụ Della Marie Martin na Nọvemba 3, 1926, na Merrill, Oregon. Ọ gụsịrị akwụkwọ sekọndrị mgbe ọ dị afọ iri na isii, ma gụọ akwụkwọ na Mahadum nke Oregon, ebe ọ gụsịrị akwụkwọ na phi beta kappa na 1947.

Mgbe nke ahụ gasịrị, ọ gara Mahadum Steeti Pennsylvania maka ọmụmụ ihe na mineralogy, na-arụ ọrụ n'ebe ahụ n'okpuru nlekọta nke Elburt F. Osborn. Dị ka nwa akwụkwọ gụsịrị akwụkwọ, ya na onye physics a mụrụ na India bụ Rustum Roy nwere ọfịs; ha lụrụ na 1948.  Ha kwagara India mana ha laghachiri Penn State na 1950. Rustum Roy were ọnọdụ ngalaba n'ebe ahụ ebe Della Roy gara n'ihu na mmemme ngụsị akwụkwọ ya, mezue Ph.D. ya na 1952. 

Mgbe ọ nwetasịrị nzere doctorate, Roy kwuru na Mahadum Pennsylvania State dị ka onye otu ngalaba. Ọ ghọrọ prọfesọ zuru oke na 1975, ma laa ezumike nká dị ka prọfesụ emerita na 2012 mgbe ihe karịrị afọ 50 na mahadum.   Mgbe ọ lara ezumike nká, ọ were ọnọdụ nke abụọ dị ka prọfesọ nyocha na Mahadum Arizona State,  ya na nhọpụta oge na-arụkọ ọrụ n'etiti ụlọ akwụkwọ mahadum nke Injinia Na-adịgide adịgide na gburugburu ebe obibi na ụlọ akwụkwọ ya nke Mechanical Aerospace, Chemical and Materials. 

Roy na onye otu Penn State Kathleen Mourant guzobere akwụkwọ akụkọ Cement and Concrete Research na 1971;  Roy nọgidere bụrụ onye isi nchịkọta akụkọ ya ruo 2005.

 Nkwado 
The American Ceramic Society kpọrọ ya dị ka Distinguished Life Fellow na Member; ọ bụ onye natara Jeppson Medal n'afọ 1982, onye natara L. E. Copeland Award nke Cements Division nke ụlọ ọrụ ahụ n'afọ 1987,  onye natara Bleininger Award nke ụlọ ọrụەکە n'afọ 2004, na aha Della Roy Lecturer Award, nke a na-enye kwa afọ kemgbe afọ 2000.

N'ihi ọrụ ya gbasara ojiji coral na ọkpụkpụ, e nyere ya Golden Goose Award site n'aka US Congress n'afọ 2012. Ọ bụkwa onye a họpụtara ịbụ nwaanyị mbụ n'ime World Academy of Ceramics (site n’ahọpụtara ya n’afọ 1991) yana onye nsọpụrụ n’Institute for Concrete Technology (ahọpụtara ya na 1987).

A họpụtara ya na National Academy of Engineering na 1987,  nke e kwuru "maka onyinye a ma ama n'ụwa niile maka sayensị na injinia nke simenti na simenti". Ọ bụ nwanyị sayensị ihe onwunwe mbụ ya na ụmụ nwanyị mbụ si Penn State họpụtara na academy.

A kpọrọ mineral a na-adịghị ahụkarị aha Dellaite n’afọ 1964. Ọ bụ calcium silicate hydrate, nke so na otu kemịkalụ ndị a na-eji eme Portland cement. Usoro kemịkal ya bụ Ca₆(Si₂)(SiO₄)(OH)₂. E chọpụtara ya na nkume limestone e gbanwere na Scotland, ma Roy mepụtara ya n’ụlọ nyocha.

 Akwụkwọ ndị a họọrọ 
Na Memorial Tributes: National Academy of Engineering, Susan Trolier-McKinstry na-akọwa ihe ndị a dị ka "n'etiti ndị kachasị mkpa" nke akwụkwọ Roy, nke karịrị 400 n'ozuzu:

  Roy, Della M.; Linnehan, Sari Kurtossy (January 1974), "Hydroxyapatite kpụrụ si coral skeletal carbonate site hydrothermal mgbanwe", Nature, 247 (5438): 220-222, Bibcode: 1974Natur.247..220R, doi: 10.104028a PMID 4149289, S2CID 4205053  Chiroff, Richard T.; Ọcha, Eugene W.; Weber, Jon N.; Roy, Della M. (July 1975), "Mgbanye anụ ahụ nke replamineform implants", Journal of Biomedical Materials Research, 9 (4): 29–45,
 doi:10.1002/jbm.820090407, PMID 1176509  Roy, Della M. (February 1987), "Ihe ọhụrụ simenti siri ike: ceramics jikọtara kemịkal", Sayensị, 235 (4789): 651-658, Bibcode:1987Sci...235..651R, doi:10.1126/sayensị.23.ID 1 51838 S2CID 22611277  Gougar, M. L. D.; Scheetz, B. E.; Roy, D. M. (January 1996), "Etringite na C-S-H Portland usoro ciment maka mkpofu ion immobilization: Nlebanya", njikwa mkpofu, 16 (4): 295-303, doi: 10.1016/s0956-053x(96)00072-4  Roy, D. M.; Arjunan, P.; Silsbee, M. R. (December 2001), "Mmetụta nke silica fume, metakaolin, na obere-calcium ofufe ash on chemical resistance of concrete", Ciment na Concrete Research, 31 (12): 1809-1813, doi: 10.1016/s0008-18-805.




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