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2023, vol. 48, br. 1, str. 28-45
Pregled ispitivanja i procesa ocene nekih inžinjerskih karakteristika zrna žitarica i primena za mehanizovanu proizvodnju i preradu u Nigeriji
aMichael Okpara University of Agriculture, Department of Agricultural and Bioresources Engineering, Umudike, Abia State, Nigeria
bEnugu State University of Science and Technology, Department of Agricultural & Bioresources Engineering, Enugu State, Nigeria
cGregory University Uturu, Department of Mechanical Engineering, Abia State, Nigeria
dMichael Okpara University of Agriculture, Department of Mechanical Engineering, Umudike, Abia State, Nigeria

e-adresaoduma.okechukwu@mouau.edu.ng
Ključne reči: žitarice; inženjerska svojstva; ispitivanje; evaluacija; mašine; prerada
Sažetak
Urađen je pregled procesa ispitivanja i evaluacije rezultata nekih inženjerskih karakteristika zrna žitarica i korišćenje za mehanizovanu proizvodnju i preradu u Nigeriji. Različiti slični radovi koji su bili relevantni za studiju su istraženi i korišćeni za ovaj pregled. Pravilna procena i korišćenje inžinjerskih karakteristika žitarica bi unapredila dizajn i/ili razvoj opreme koja bi bez napora unapredila proizvodnju i proces ubiranja ili prerade žitarica posle žetve i minimizirala nepotrebno oštećenje/gubitak semena/zrna. Ispitivanjme je utvrđeno da sadržaj vlage ima veliki uticaj na inženjerske osobine zrna. Rezultati istraživača su pokazali povećanje mase semena korijandera sa 8,89 na 9,826 g kada je sadržaj vlage povećan sa 8,5 % na 15,89 % (v.b.). Ugao trenja je povećan sa 25,5 o na 31o uz povećanje sadržaja vlage sa 8,5 % na 15,89 % (v.b.). Koeficijent trenja za različite površine je u porastu sa povećanjem sadržaja vlage (%), dok nasipna gustina (zapremina) opada sa povećanjem sadržaja vlage. Sila kompresije potrebna za pojavu rupture (oštećenje) zrna opada sa povećanjem sadržaja vlage. Dakle, deformacija kod oštećenja-rupture zrna se povećava sa povećanjem sadržaja vlage. Rezultati ispitivanja ukazuju na smanjenje sile loma u rasponu od 63 do 38N za uzorak sa oznakom IT86D-I0I0, 64 do 40N i 70 do 46 N, respektivno za sorte IAR-339-1 i Ife Brown pri sadržaju vlage u rasponu od 15 do 30% (v.b). Istraživanje je dalje pokazalo da je većina studija bila fokusirana na nekoliko žitarica i da podaci o inžinjerskim osobinama dobijeni za različita semena (zrna) žitarica variraju od useva do useva i od sorte do sorte. Ova varijacija zahteva studije inženjerskih svojstava različitih vrsta i varijeteta žitarica na različitim nivoima sadržaja vlage koje bi usmeravale poljoprivrednike, prerađivače i dizajnere/proizvođače mašina u razvoju i izboru odgovarajućih mašina za njihov rad na bilo kom nivou kako bi se povećao njihov učinak uz smanjen gubitak ili oštećenje semena (zrna).
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.5937/PoljTeh2301028O
primljen: 03.11.2022.
revidiran: 20.12.2022.
prihvaćen: 15.01.2023.
objavljen u SCIndeksu: 31.03.2023.

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