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| Registros recuperados: 1.540 | |
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| Ishpekov, Stoyan Savov. |
| The objective of the study was determination the release of seeds, caused by а lateral mechanical impact for feeding sesame stems into harvester in order to define the conditions for reducing losses. An experimental unit for simulating mentioned impact has been created. The percentage of releasing seeds depending on acceleration and the height of application point of the impact on single stem has been determined. It was found that the feeding of sesame stem into harvester can be achieved by a lateral impact with acceleration up to 0.5 m.s-2 and speed up to 1.05 m.s-1, if the application point has height 0.6 m from the soil surface. This impact causes up to 5% release of seeds from hybrid 27 when their moisture is 6.2%. The percentage of the seeds releasing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural engineering Sesame seed loses; Mechanization. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4265 |
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| ZZIWA, AHAMADA; MUKASA, JOSEPH; KIZITO, SIMON. |
| Forest fires in Pine and Eucalyptus plantations are common in Uganda especially in the dry periods. In an event of fire gutting a nearly mature plantation, tree farmers usually try to reduce losses by extracting and lumbering the residual trees for use in agricultural buildings. However, there is no empirical data to guide material selection based on strength and structural integrity of the timbers from burnt plantations. Therefore, this study investigated the effect of fires on selected physical and strength properties of timber extracted from a 10-year old stand of Pinus caribaea that had been burnt. Test specimens were prepared and tested for MOE, MOR and compression parallel to the grain using a Testometric AX M500 – 25KN Universal Testing Machine in... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5696 |
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| Ebiyeritei, Egbe Wisdom. |
| Drying is an important process that increases the shelf life of agricultural products. It is a process whereby the activities of most decay causing microbes are either deactivated or reduced to safe levels. This work determined the drying kinetics of Periwinkle Meaty within the drying temperature range of 50°C through to 100°C using a laboratory convective oven. Drying data was fitted to five thin layer drying models such as artificial neural network (ANN), page, Henderson-pabis, Lewis and a newly developed model (NDM). The various related thin layer drying model constants and coefficients were obtained using non-linear regression statistical methods. The result shows that drying took place almost entirely within the falling rate period. The temperature... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8465 |
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| A. E. F Ryerson; Q. Zhang. |
| In farming operations, one of the fundamental issues facing a farmer is the cost of running the farm. If the equipment the farmer is using can be made more efficient, the cost of farming will be reduced. One way of making agricultural equipment more efficient is to develop automated or autonomous functions for the equipment. One of the fundamental tasks for autonomous equipment is to plan the path for the equipment to travel. This paper reports the research on the feasibility of creating an automated method of path planning for autonomous agricultural equipment. Genetic algorithms were chosen to plan the paths with a primary goal of creating an optimal path guiding the equipment to completely cover a field while avoiding all known obstacles. Two example... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/945 |
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| M. Z. Hossain. |
| It is evident that the inadequate frictional resistance and meager cohesion of conventional reinforcements in reinforced earth structures such as geogrids, geosynthetics and wire meshes are serious shortcomings that not only impose constraints in structural designs, but also affect the stability of reinforced earth structures. In this regard, the benefits of earth reinforcing materials in improving the interaction resistances are eminent. For the reinforcement to be effective, two conditions need to be satisfied i.e. it must possess enough strength to withstand tension failure and adhesion failure. This paper highlights some experimental results on the performance behavior of thin cementitious composite elements reinforced by wire meshes under shear tests... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1228 |
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| D. Yilma; Akdeniz University,; I. Akinci; M. I. Cagirgan. |
| The threshing section on combine harvester or thresher machine affects grain and stalk separation performance. In this study, effect of some threshing parameters such as drum speed, feed rate and concave open on closed capsules sesame straw sieve in developed threshing unit. Threshing drums used were a rasp bar with tooth type. Three threshing drum speeds of 500, 700 and 900 min-1 (6.5, 9.1, 11.7 m/s) were used to investigations. Three feed rate as 90, 180 and 270 kg/h and three concave open as 20, 35 and 50 mm were used in this study. Four sieves were used for separation of straw. Their mesh numbers are 7, 10, 14 and 18. Results show that the best performance for separation of sesame straw were gave at the maximum drum speeds, minimum feed rates and... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1236 |
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| basiri, shadi; Azimi, Nosrat; Mortazavi, Ali. |
| White mulberry is a fruit with high nutritional quality. The shelf life of Mulberry is short due to high moisture content. In this research, a new product from white Mulberry called pastille was formulated. Two hydrocolloid ingredients: guar (0, 0.5 and 1 %) and gelatin (0, 1 and 2 %) were used for pastille formulations. Parameters such as color parameters (L * a * b *), sensory evaluations and texture profile analysis (TPA) of samples were investigated. The results of texture evaluation showed that springiness, chewiness, adhesiveness and hardness increased by increasing gelatin, while cohesiveness decreased. Hardness and adhesiveness decreased by addition of the guar. Hardness and adhesiveness decreased with adding guar. Sensory evaluation showed that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydrocolloid; Mulberry pastille; Sensory Characteristics; Texture Properties.. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5185 |
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| T. Oksanen; A. Visala. |
| If the field plot shape is not rectangular and if it contains obstacles, the coverage path planning problem is hard to solve for a non-omnidirectional machine. Scientists have developed several algorithms to solve this coverage path planning problem, but all of them have pros and cons. If the machines were omnidirectional and turning times were decreased to insignificant, the problem would be quite easy to solve using known robotic path planning methods. Traditional agricultural machines, like tractors, tractor-trailer combinations, self-propelled harvesters and other man-driven machines are slow to turn at headlands. This is the most differentiating property of the problem formulation compared to traditional robotic coverage path planning, which has dealt... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/940 |
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| Bernhardt, Heinz. |
| The topic logistic has become more and more important in German agriculture during the last years. This is caused by a growth of enterprises and machines but also be the enormous extension of the cultivation of renewable resources for the production of energy. To manage these logistical tasks in agriculture in Germany at the moment different transport systems are preferred. The classical system with tractor and agricultural trailer, transport via truck like it is typical for the commercial transport of goods and the transport with specialized vehicles which can be classified between both systems. To evaluate these transport processes it is decisive for the farmers to know the key parameters of the single systems like the average fuel consumption (energy)... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3140 |
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| Adekanye, Timothy Adesoye; Osakpamwan, Adams Blessing; Osakpamwan, Adams Blessing; Osaivbie, Idahosa Endurance; Osaivbie, Idahosa Endurance. |
| A soybean threshing machine was designed, fabricated and evaluated at Landmark University, Omu-Aran, Kwara State, Nigeria, to determine its performance and ease the drudgery problems associated with threshing of soybean by the small scale farmers. Evaluation was carried out with TGX 1448 soybean variety at different levels of moisture contents; 10%, 16% and 22% (wet basis) and at different drum speeds; 320 r/min, 385 r/min, 450 r/min, 515 r/min, with constant mass input of 600g and constant concave clearance of 23 mm. The overall mean results obtained for performance indicators in terms of threshing efficiency, cleaning efficiency, percentage of damage seed, percentage of blown seeds, percentage of seed loss and throughput capacity were 99.51%, 77.91%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering / Crop Processing soybean; Threshing; Separation; Efficiency; Small scale farmers. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3675 |
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| Registros recuperados: 1.540 | |
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