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Articles by Turkan Aktas
Total Records ( 3 ) for Turkan Aktas
  Habib Kocabiyik , Turkan Aktas and Birol Kayisoglu
  In this study, determination of porosity for some kernel crops was aimed. In addition, relationships were investigated between porosity values and some physical properties of these kernel crops. For this aim; wheat, canola, onion seed, corn, soybean and sunflower seeds were used as vegetal material. After determination of physical properties of kernel crops, a tube system was used which was designed for porosity measurements and operates according to ideal gas law. This measurement system can be filled easily with kernel crops. Pressure of 1.3 kp cm-2 was applied to kernel crops. In tests porosity values were measured at different moisture contents related with their physical properties. In the results, relationships between porosity values, moisture contents and physical properties were found. The effect of moisture content on porosity was significant at 99% confidence level for every seed bulk.
  Cihangir Saglam and Turkan Aktas
  In order to design equipment for harvesting and improved processing of olive that is used to produce oil, some of the physical properties were determined. Ayvalik and Memecik cultivars which were used for olive production were used in these experiments. The average mass and some of dimensions such as length, and width of olive cultivars were determined as 3.11 g, 19.05 mm, 15.22 mm for Ayvalik cultivar and 4.37, 22.28, 16.97 mm for Memecik cultivar, respectively. The average geometric mean diameter and sphericity were calculated as, 16.39 mm and 80.18% for Ayvalik cultivar and 18.56 mm and 79.90% for Memecik cultivar, respectively. The static friction coefficient of olive varieties against galvanized sheet metal, wood, net, painted metal sheet and textile surfaces were determined. The highest coefficient of friction for both cultivars was found against net surface and the lowest one was found against wood surface.
  Turkan Aktas , Ilker Celen and Recai Durgut
  Some physical and mechanical properties of safflower seed were determined as a function of moisture content in the range from 7.4 to 9.2%. The dimensions of the length, width and thickness (major, medium and minor axes) varied from 7.27 to 7.81 mm, 3.5 to 3.79 mm and from 2.8 to 3.5 mm, respectively. The geometric mean diameters, the weight, thousand kernel weight, sphericity and porosity values increased from 4.46 to 4.82 mm, from 0.054 to 0.07 g, from 52.68 to 68.8 g, from 47.14 to 48.83% and from 40.7 to 44.2%, respectively. The static coefficient of friction for four structural surfaces increased from 25.36 to 29.99 for galvanized metal surface, from 22.2 to 26.83 for painted metal surface, from 23.92 to 25.05 for plywood and from 27.56 to 31.88 for textile (with plywood and textile grains parallel to the direction of movement). While fracture force increased from 42.4 to 63.8 N with increasing moisture content, insertion and crushing forces decreased from 48.64 to 30. 65 and from 75.39 to 62.3 N, respectively.
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