International Journal of Agricultural Research1816-48972152-2553Academic Journals Inc.10.3923/ijar.2007.677.686Helianthus annuus L.)]]>IsikEsref IzliNazmi 8200728The physical properties of sunflower seeds (Helianthus annuus L.) were determined as a function of moisture content in the range of 10.06-27.06% dry basis (d.b.). The average length, width and thickness were 7.79, 7.12 and 4.18 mm, at a moisture content of 10.06% d.b., respectively. In the above moisture range, the arithmetic and geometric mean diameters increased from 6.37 to 8.05 mm and from 6.15 to 7.93 mm, respectively, while the sphericity decreased from 0.789 to 0.835. In the moisture range from 10.06-27.06% d.b., studies on rewetted sunflower seeds showed that the thousand grain mass increased from 66 to 70 g, the true density from 885.00 to 902 kg m-3, the porosity from 53.06 to 54.93% and the terminal velocity from 4.07 to 4.57 m s-1. The bulk density decreased from 415.40 to 406.56 kg m-3 with an increase in the moisture content range of 10.06-27.06% d.b. The static coefficient of friction of sunflower seeds increased the linearly against surfaces of six structural materials, namely, rubber (0.55-0.65), aluminum (0.50-0.57), stainless steel (0.49-0.56), galvanized iron (0.53-0.59), glass (0.41-0.45) and MDF (medium density fiberboard) (0.43-0.48) as the moisture content increased from 10.06-27.06% d.b.]]>Aviara, N.A., E. Mamman and B. Umar,2005Balanites aegyptiaca nuts.]]>92325334Aydin, C., H. Out and M. Konak,200283231234Baryeh, E.A. and B.K. Mangope,2003565965Calisir, S., M. Ozcan, H. Haciseferogullari and M.U. Yildiz,2005Hibiscus esculenta L.) seeds.]]>687378Chandrasekar, V. and R. Viswanathan,199973227234Co-kun, M.B., I. Yalcn and C. Ozarslan,2006Zea mays saccharata Sturt.).]]>74523528Deshpande, S.D., S. Bal and T.P. Ojha,1993568998Dursun, E. and I. Dursun,200592237245Gupta, R.K. and S.K. Das,19976618Joshi, D.C., S.K. Das and R.K. Mukherjee,199354219229Konak, M., K. Carman and C. Aydin,2002827378Mohsenin, N.N., 19701st Edn.,Nimkar, P.M. and P.K. Chattopadhyay,200180183189Nimkar, P.M., D.S. Mandwe and R.M. Dudhe,200591183189Ozdemir, F. and I. Akinci,200463341347Ogut, H.,199869273277Ozarslan, C.,200283169174Sacilik, K., R. Ozturk and R. Keskin,200386191198Sahoo, P.K. and A.P. Srivastava,200283441448Singh, K.K. and T.K. Goswami,1996649398SIS.,20062006Suthar, S.H. and S.K. Das,1996Citrullus lanatus (thumb) Mansf.] seeds.]]>651522Tunde-Akintunde, T.Y. and B.O. Akintunde,200488127129Vilche, C., M. Gely and E. Santalla,2003865965Yalcin, I. and C. Ozarslan,200488507512