Physical properties of three Iranian onion varieties
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2013, Vol 7, Issue 9
Abstract
Onion with food and medical properties contains many essential vitamins and mineral which are necessary for the human health. Due to lack of information about the physical properties of onion in Iran, this crop is sold with lower quality.In this research, some physical properties of three Iranian varieties of onion were studied. True density, coefficient of friction, rolling angle, dimensions and shape index were measured. Polar diameter (a) range is from 46.93 mm to 59.82 mm and equatorial diameter (c) is from 46.63 mm to 59.82 mm. The average of 1.004±0.023, 1.001±0.027 and 1.099±0.119 shape index was estimated for red Azarshahr, white Kashan and yellow Isfahan varieties, respectively. It showed that those three cultivars are spherical in shape. The coefficient of static friction on plywood, galvanized, rubber and PVC surfaces were about 0.243 to 0.821, 0.195 to 0.916, 0.852 to 1.186 and 0.909 to 1.250 respectively. The rolling angle was obtained from 11.13 to 15.87 degrees. The results showed that frictional surface have no effects on rolling angle.
Authors and Affiliations
Hossein Ghaffari| Lecturer, Dept. of Agricultural Machinery, Faculty of Agriculture, University of Tabriz, Iran, Neman Marghoub| MSc Student, Dept. of Agricultural Machinery, Faculty of Agriculture, University of Tabriz, Iran, email: neman_marghoub@yahoo.com, Mehdi Shirazi Sheikhdarabadi| Former MSc Student, Dept. of Agricultural Machinery, Faculty of Agriculture, University of Urmia, Iran, Ali Hakimi| Graduated from Dept. of Agricultural Machinery, Faculty of Agriculture, University of Tabriz, Iran, Farzin Abbasi| MSc Student, Dept. of Agricultural Machinery, Faculty of Agriculture, University of Tehran, Iran
Keywords
Related Articles
- EP ID EP6426
- DOI -
- Views 293
- Downloads 10
Sign of Pedogenesis in loess-paleosol sequences as indicator of paleocilmate, Golestan Province, Iran
One of the best indicators of the geological and environmental events in the Quaternary is the alternation of loess-paleosol. In this study, for pale environmental identification of buried pale sols in loess sequences wh...
Comparing two methods of circular and transects samplings in terms of biodiversity indices
Species diversity is considered as an index to compare the ecological conditions of forest ecosystems. This study aims to preserve biodiversity by considering 60 plots with an area of 316 ha in Darabkola forest, which wa...
Performance Measurement in the Public Sector Budgeting
This article focuses on the use of performance measurement in public budgeting. The use of performance measurement in budgeting has been advocated at various levels of government. Efforts have been made to incorporate pe...
Examining the Relationship between Emotional Intelligence and Brokerage Firms’ Performance in Tehran Stock Exchange
Adopting Daniel Goleman’s model of Emotional Intelligence (EI) Competencies, this study investigates the relationship between “EI” and “Performance”. To measure EI, therefore, a standard questionnaire introduced in “Emot...
Quality of life and its dimensions among the type2 diabetes patients referred to the diabetes center of Zanjan University of medical science (Vali-e-Asr Hospital)-2010
One of the most important methods for evaluation of treatment and care of diabetic patients is to assess the quality of life (QOL). Chronic patient like diabetes are face with many disorder in dimensions of QOL. The aim...