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	Provedor de dados CIGR Journal (4) Autor Chegini, Gholam Reza (4) Mirzabe, Amir Hossein (4) Khazaei, Javad (2) Massah, Jafar (1) Palavra-chave Agricultural Engineering (1) Angle of impingement (1) Generalized extreme value (1) Helianthus Annuus L. (1) Image processing technique (1) Impingement Jet Method (1) Jet Force (1) Log-normal (1) Modeling (1) Nozzle (1) Nozzle diameter reservoir pressure angle of impingement response surface methodology (1) Preliminarily model (1) Rotational velocity (1) Seed Picking Force (1) Seeds location. (1) Sunflower (Helianthus Annuus. L) thresher machine image processing (1) Sunflower Thresher (1) Sunflower head (1) Thresher machine (1) Wiebull (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2016 (2) 2015 (1) 2014 (1) País China (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Design, construction and evaluation of preliminarily machine for removing sunflower seeds from the head using air-jet impingement CIGR Journal Mirzabe, Amir Hossein; Chegini, Gholam Reza; Khazaei, Javad; Massah, Jafar. To design a sunflower machine for removing seeds from sunflower head (SH) based on air-jet impingement, preliminarily model of such machine was designed, constructed and evaluated.  Effects of the seed location, angle of impingement, distance between nozzle outlet and sunflower head, and rotational velocity of sunflower head on percentage of extracted seeds were examined.  In order to examine the effects of air-jet parameters on percentage of removed seeds in different locations of seed on sunflower head, sunflower heads were divided into three regions, namely central region, middle region and side region.  Results indicated that in all three regions, with increasing rotational velocity from 10 to 30 rev/min, percentages of removed seeds from the SH... Tipo: Info:eu-repo/semantics/article Palavras-chave: Preliminarily model; Angle of impingement; Nozzle; Rotational velocity; Sunflower head; Seeds location.. Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2697 Effect of air-jet impingement parameters on the removing of sunflower seeds from the heads in static conditions CIGR Journal Mirzabe, Amir Hossein; Chegini, Gholam Reza. Due to the success of air-jet in food and agricultural sciences, in order to eliminate a number of problems in mechanical methods of removing sunflower seeds from the head, a new method was invented based on impingement jets.  In fact, the aim of presenting the air-jet impingement method was not to design this simple machine.  But when we started designing the final machine, we realized that we need to take a step back and study the jet parameters in simple and static state.  The effect of the seeds’ location on sunflower head, reservoir pressure, the angle of impingement, nozzle diameter and the distance between the nozzle outlet and the surface of the sunflower head on the removed area of sunflower head in static conditions were examined.  The regions... Tipo: Info:eu-repo/semantics/article Palavras-chave: Sunflower (Helianthus Annuus. L) thresher machine image processing; Nozzle diameter reservoir pressure angle of impingement response surface methodology. Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3595 Measuring Picking Force of Sunflower Seeds and Prediction of Reasonable Range of Air-Jet Parameters to Remove Sunflower Seeds from the Head CIGR Journal Mirzabe, Amir Hossein; Chegini, Gholam Reza. To design a new machine which removes the seeds of sunflowers based on air-jet impingement, picking force of five varieties of sunflower seeds was measured. Effects of the loading rate, sunflower head’s diameter, the location of the seeds on the head and the number of the days after harvesting on picking force of seeds were studied. The tests were conducted 1, 2, 3 and 4 days after harvesting. Also theoretical air-jet impingement forces for four levels of nozzle diameter, four levels of jet temperature and eight levels of pressure of reservoir to which the jet were calculated. With the increase of the sunflower heads’ diameter and the loading rate from 50 to 150 g min-1, the values of the picking force increased. With the increase of the distance between... Tipo: Info:eu-repo/semantics/article Palavras-chave: Sunflower Thresher; Seed Picking Force; Impingement Jet Method; Jet Force; Agricultural Engineering; Helianthus Annuus L.. Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3381 Measuring some physical properties of sunflower (helianthus annus l.) head and modeling dimensions CIGR Journal Mirzabe, Amir Hossein; Khazaei, Javad; Chegini, Gholam Reza. For 100 sunflower head, maximum and minimum diameters, thickness, height of the ground, and mass of all seeds on sunflower head (SH) for five conventional varieties were measured.  To examine the correlation between maximum SH diameter and minimum SH diameter, SH thickness, SH height from the ground and SH seeds mass, linear regression method was used.  Also SH diameter and SH thickness of four sunflower hybrids varieties were measured.  Log-normal, Weibull and Generalized extreme value (G.E.V) distribution were used in order to model SH diameter and SH thickness distributions of all varieties and hybrids; also, Kolmogorov-Smirnov methods were used for comparison of all probability density.  Results indicated that value of average of dimensions, geometric... Tipo: Info:eu-repo/semantics/article Palavras-chave: Thresher machine; Image processing technique; Modeling; Generalized extreme value; Log-normal; Wiebull. Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3641 Registros recuperados: 4 Primeira ... 1 ... Última

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