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مُخالفة من قبل الأعضاء، يُرجى الإبلاغ عنها فورًا باستخدام أيقونة
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![]() ![]() من فصلكم اريد ترجمة هدا الموضوع فقد جربت goole traduction و systran لكن بدون جدوى ارجو المساعدة في اقرب و قت لاني احتاجحهم في مدكرة التخرج و لم يبقى لي الوقت الكافي
[LEFT]Green wheat, commonly known as frikeh (also known as frekeh or freekah) is a product of green (under-mature) durum wheat with a distinctive smoked flavor. Green wheat is becoming an increasingly popular food in the Middle Eastern countries and throughout the world. It has been reported that 200–300 thousand tons are produced in Middle East every year (Williams & El-Haramein, 1985). Green wheat (frikeh), is made when culms and spikes are green. The good time for harvesting wheat for making green wheat is when some milky endosperm exudes from a grain bent sharply between thumb and forefinger. The proper stage for making green wheat is critical to quality characteristics. If wheat is harvested and roasted too early, the grain will collapse, while too late harvesting and roasting will not provide the distinctive green color and flavor of green wheat (Musselman & Mouslem, 2001). In the traditional methods of green wheat making, wheat sheaves are cut and collected in the morning, then allowed to dry for 2–4 h in an open place. After drying, sheaves are placed on clean bare ground or pieces of sheet ****ls and burned over using the dried remains of other crops such as barley straw. Some farmers nowadays use direct flame throwers which use butane fuel instead. During burning, sheaves are turned frequently with a pitch fork to expose the green leaves and glumes. When the glumes are charred and the tips of some of the grains are slightly blackened, burning is stopped and the spikes are left to cool. Few hours later, the heads are threshed by feeding them into a threshing machine that is usually brought tothe site. The fresh green wheat is slightly sweet, chewy, with a desirable smoked flavor. Green wheat is then sold fresh or dried in the shade to avoid bleaching. Green wheat has a high initial moisture ******* (40–45% w.b.), but during the drying process, it loses about 40% of its weight. Good quality green wheat is plump, slightly charred, firm when fresh, green when dried, contains few remains of the pleas, lemmas, glumes, and free from stones and debris (Musselman & Mouslem, 2001; Williams & El-Haramein, 1985). Nutritional composition of green wheat shows that it has 77% carbohydrates, 12.7% protein, 16.5% dietary fiber, small amounts of vitamin A, B1, B2, C, and E. Mineral composition shows high amounts of potassium, magnesium, and calcium (Bird & Mular, 2003). Traditional methods that are currently in use for green wheat production have two major disadvantages: firstly, they are slow and cannot be suited for large scale production, and secondly they cannot be guaranteed to provide a consistent good quality product. Mechanization of the green wheat production may involve three main steps: in the first step, the cut sheaves are roasted by exposing them to direct fire while being conveyed on a ****l conveyor belt, in the second step, the roasted sheaves are threshed to separate green wheat kernels from other residues, and in the third step, the threshed kernels are dried to safe storage moisture *******. Therefore, a good knowledge of the physical properties of the crop can greatly facilitate the design of the required machinery for this process. Principal axial dimensions of seeds are useful in selecting sieve separators, in calculating grinding power during size reduction. They can also be used to calculate surface area and volume of kernels which are important during modeling of grain drying, aeration, heating, and cooling. Several researchers reported the use of principle axial dimensions to measure physical dimensions of seeds and kernels (Amin, Hossain, & Roy, 2004; Aviara, Gwandzang, & Haque, 1999; C¸ alısır, Marakog˘lu, O¨ g˘u¨ t, & O¨ ztu¨ rk, 2005; Deshpande, Bal, & Ojha, 1993; Oje, 1993; Omobuwajo, Akande, & Sanni, 1999). Simple correlations were used to relate the dimensions of several seeds and kernels to each other, such as watermelon, pumpkin, karingda, lentils, and guna (Aviara & Haque, 2000; Carman, 1996; Joshi, Das, & Mukherjee, 1993; Makanjuola, 1972; Suthar & Das, 1996). The effect of moisture ******* on kernel dimensions of soybeans, rapeseeds, guna seed, and groundnut were reported by Aviara and Haque (2000), C¸ alısır et al. (2005), Deshpande et al. (1993) and Kaleemullah (1992), respectively. Volume of gram and guna seeds were predicted using the arithmetic mean of the three principal axis, effective diameter, and average geometric diameter of the seeds (Aviara et al., 1999; Dutta, Nema, & Bhardwaj, 1988). Bulk density, true density, and porosity can be useful in sizing grain hoppers and storage facilities; they can affect the rate of heat and mass transfer of moisture during aeration and drying process. Grain beds with low porosity will have greater resistance to water vapor escape during the drying process, which may lead to higher power to drive the aeration fans. Bulk density was measured by using Association of Official Analytical Chemists procedure (AOAC, 1980); while true density, was measured by either water displacement method (Aviara et al., 1999; Ogunjimi, Aviara, & Aregbesola, 2002; Omobuwajo et al., 1999) or gas displacement method (Joshi et al., 1993; Suthar & Das, 1996). Porosity can be calculated from bulk density and true density. Design of grain harvesting and handling system requires the determination of friction coefficient between grain and structural surface in contact with the grain. Such information is useful in sizing motor requirements for grain transportation and handling. Friction coefficients are divided into static and dynamic friction coefficient. Static coefficient of friction has been measured by placing seeds on a specific structural surface and tilting the surface until seeds start to slide (Aviara et al., 1999; Deshpande et al., 1993; Ogunjimi et al., 2002). Dynamic coefficient of friction for seeds and agricultural materials has been measured by moving seed bulks against structural surfaces such as galvanized steel sheet, wood, and plywood, at a constant velocity (Lawton, 1980). Flowability of grain and other powdery materials is usually measured using angle of repose. Angle of repose has been measured using a specially structured box which has a removable front panel (Dutta et al., 1988; Fraser, Verma, & Muir, 1978; Ogunjimi et al., 2002). Terminal velocity of seeds and grains is useful in design of pneumatic conveying systems, and grain cleaning facilities (Baryeh, 2002; Omobuwajo, Sanni, & Balami, 2000; O¨ zarslan, 2002; Sacilik, O¨ ztu¨ rk, & Keskin, 2003).Green wheat production provides an economic advantage for local farmers, since it is commonly sold at a price that is three times as high as wheat. In an effort to improve the competitiveness of this industry, and improve the socioeconomic status of the local farmers, the Jordanian government has encouraged research on developing an effective mechanization for this growing industry. Therefore, the objective of this study was to explore some of the physical properties of green wheat and their dependence on moisture *******, which can help out in the design of handling, processing, and packaging machinery for green wheat production. The following properties were investigated: principle dimensions, effective diameter, mass of 1000 kernels, sphericity, bulk density, true density (particle density), porosity, static coefficient of friction.[/LEFT اعلم ان هدا كثير لكن ارجو المساعدة و جزاكم الله كل خير]
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رقم المشاركة : 2 | |||
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![]() whish u all the best bro ... ![]() so soorry coz i can't help u .. i jst use google if i need to translate sm text .. may allah blessing always whith u . |
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رقم المشاركة : 3 | |||
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![]() merciiiiiiiiiiiiiiiiiiiiiiiiiii |
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رقم المشاركة : 4 | |||
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![]() good luck that,how can i help you ....so sorry....may Allah help you.... |
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رقم المشاركة : 5 | |||
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![]() me too i can't help you i am sorry it's tooooooooooooooooo lang |
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المشاركات المنشورة تعبر عن وجهة نظر صاحبها فقط، ولا تُعبّر بأي شكل من الأشكال عن وجهة نظر إدارة المنتدى
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