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Articles by K. Kheiralipour
Total Records ( 4 ) for K. Kheiralipour
  K. Kheiralipour , A. Tabatabaeefar , H. Mobli , S. S. Mohtasebi , S. Rafiee , A. Rajabipour and A. Jafari
  In this study, two theories for terminal velocity of fruits were proved by authors as KHAT1 and KHAT2 theories. Terminal velocity of Redspar apples was experimentally measured using water column and video camera. Some apple characteristics that affect on terminal velocity of apple based on proved theories were determined using standard methods. There is found that the most effective characteristics on apple terminal velocity were density and volume. The best equation for terminal velocity of Redspar apples was found with R2 = 0.69.
  K. Kheiralipour , A. Tabatabaeefar , H. Mobli , S. Rafiee , A. Sahraroo Sahraroo , A. Rajabipour and A. Jafari
  Several physical properties as physical characteristics, mechanical, hydrodynamic and nutritional properties of two apple varieties (Redspar and Delbarstival), were determined and compared using Duncan`s multiple ranges test. Physical characteristics such as: average fruit length, width, thickness, the geometric, arithmetic and equivalent mean diameter, projected area, surface area, sphericity index, aspect ratio, fruit mass, volume, true density and moisture content, were determined for both varieties. The coefficient of static friction on plastic, plywood and galvanized iron, flesh firmness, failure stress, modulus of elasticity were found. The terminal velocity, coming up time, bouncy and drag forces, as hydrodynamic properties and total dry matter, total soluble solid, pH and titratable acidity, as nutritional properties, were determined. It was concluded that most of properties of two apple varieties was statistically different at the one percent probability level.
  K. Heidarbeigi , H. Ahmadi , K. Kheiralipour and A. Tabatabaeefar
  Khinjuk is oiling crop; therefore, physical and engineering properties are necessitate to determine for processing and equipment design. In this study, some raw material characteristics were determined for Khinjuk, in order to collect information about identifying some physical and mechanical properties of them. The average grain length, width and thickness were 5.49, 5.09 and 4.08 mm, respectively. The geometric mean diameter, thousand grain kernel and aspect ratio were 5.02 mm, 87.15g and 0.95, respectively. True density, bulk density and porosity were 1.01 kg m-3, 0.55 kg m-3 and 45 %, respectively while the static coefficient of friction varied from 0.45 on plywood surface to 0.56 on galvanized iron. The angle of repose for static and emptying were 48.33 and 23.74o degree, respectively. Whereas the failure force and elongation were 42.49 N and 1.35 mm respectively.
  M. Karimi , K. Kheiralipour , A. Tabatabaeefar , G.M. Khoubakht , M. Naderi and K. Heidarbeigi
  Physical properties often required for designing the equipments for planting, harvesting and postharvesting operations of seeds. Several physical properties of three popular wheat varieties (Shiraz, Karoun and Shiroudy) were determined and compared for moisture content in 8, 12 and 18% w.b in 2007 in University of Tehran. The average length, width and thickness were 6.75, 3.26 and 2.77 mm at a moisture content of 8% w.b., respectively. studies on rewetted wheat seeds showed that the thousand-kernel weight increased from 18.38 to 22.43g. The geometric and equivalent mean diameter, surface area, sphericity and aspect ratio at a moisture content of 8% w.b were 3.93, 3.94 mm, 48.68 mm2, 0.58, 0.48, respectively. The porosity increased from 0.43 to 0.45 %. Whereas the bulk density decreased from 0.72 to 0.66kg m-3 and the true density from 1.25 to 1.19 kg m-3, with an increasing in the moisture content range of 8B18% w.b. The static and dynamic angle of repose varied from 37.28 to 47.33 and 29.89 to 36.5o. The mean of static friction coefficient of three wheat varieties increased the linearly against surfaces of three structural materials, namely, compressed plastic (0.43 - 0.53), galvanized iron (0.33 - 0.53) and plywood (0.35 - 0.41) as the moisture content increased from 8 to 18% w.b.
 
 
 
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