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| Registros recuperados: 1.540 | |
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| Gelaw, Geta Kidanemariam; Tilahun, Daniel; Adamu Zegeye. |
| Teff (Eragrostistef (Zucc.)Trotter) is a typical crop growing in most areas of Ethiopia, with the first area coverage. Threshing of teff can be performed indifferent ways; by hand beating, animal trampling and use of stationary threshers. In all cases of teff threshing, separation and cleaning are the most tedious and time consuming activities. In this research, the design effect of a newly developed type threshing unit was compared against SG-2000 stationary thresher. The comparison was focused on two independent variables: feed rate and drum speed, with three levels 275, 325 and 400kg.hr-1; and 900, 1000 and 1200 rpm respectively. The result revealed mean values of the threshing capacity, cleaning efficiency and separation efficiency are 42.30 and 45.81... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8667 |
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| Satti, Yasir Hassan; Liao, Qingxi. |
| Abstract: the pneumatic precision metering device for wheat was innovated, designed and tested under laboratory conditions. Very good results were then obtained according to the precision seeding criteria based on quality of feed index (QFI), miss index (MIS) and multiple index (MULI). To optimize the structure of the design for gas stability before manufacturing, ANSYS-CFX was involved. Gas behavior was simulated under different shapes and positions for pressure inlet along with different seed hole diameters. According to the structure determined in ANSYS-CFX, the seed hole of 1.8 mm and cylindrical shape of pressure inlet was found to be the best among others, accordingly the deice was then manufactured and tested under laboratory and field conditions.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Simulation; Precision metering device; Negative pressure behavior. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3048 |
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| tuates, andres MORALES. |
| The study aimed to determine the optimum proportion of corn cob biomass material and binder for fuel briquettes. Three (3) levels of percentage binding agent (10, 15, 20) and three (3) different particle size (< 2.2mm, 2.2-3.2 and >3.2mm) were used in the experiments. The physical and thermal properties of the fuel briquettes were characterized in terms of density, percent shatter resistance, breaking strength, thermal efficiency and burning time.Results showed that twenty percent binding and a particle size of <2.2mm exhibited a high density of 0.30gm/ cc, the highest performance in the compression test with a value of 241.62 N and good shatter resistance of 99.25 percent. Likewise, the thermal efficiency of the briquettes produced from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Corn cobs; Fuel briquettes; Physical and thermal properties; Burning time. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4089 |
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| Das, Ashish Kumar. |
| The study was undertaken with the objective of evaluating jam with enhanced nutritional properties and acceptable sensory attributes. The proximate composition of formulated jam samples was ranged from 31.40 to 30.34% for moisture, 0.41 to 0.22% for ash, 0.92 to 0.69% for protein, 0.35 to 0.31% for fat, 0.96 to 0.76% for fiber and 67.48 to 66.34% for carbohydrate. The antioxidant activity was found in sample A (40.9), B (39.65) and C (25.7) % and the total phenolic content of different formulated jam vary from 6.58802 to 2.239 mg GAE/100gm. The physicochemical characteristics of the jam sample were evaluated after the aqueous extract of carrot with papaya juice was turned into jam. The jam was developed by using Carica papaya and carrot in different ratios... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7831 |
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| Ezeanya, Nnaemeka Charles; Nwakuba, Nnaemeka Reginald. |
| This paper aimed at modeling the effect of dryer configurations on the thin-layer solar drying kinetics of ogbono seeds. Ogbono seeds were dried using a solar drying system, which was a forced convection distributed type solar collector, equipped with a sun-tracking mechanism. The seeds were dried at four different tilt angles of 0, 5, 10, and 15°; two absorber plate thicknesses of 1.5 mm and 2.7mm; and a constant air velocity of 2 ms-1. The drying data obtained from the experiment was fitted to six thin-layer drying predictive models. The effective moisture diffusivities at varying treatments as well as the activation energy of the ogbono seeds were determined. Results from the experiment revealed that the drying kinetics of the seeds varied with the... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8477 |
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| Amponsah, Shadrack Kwadwo; Sheriff, J Thajudhin; Byju, Gangadharan. |
| Abstract: In India, cassava is consumed as a secondary staple along with the main staple, rice, and many rural poor consume it as the staple in different forms of preparations. Though harvesting is known to be one of the most difficult and cost-intensive field operation in cassava cultivation, mechanisation of cassava harvesting is still very low in most cassava growing areas of India due to topographic constraints, methods and scale of cultivation. The most viable solution to overcome these constraints is to promote the use of more efficient manual harvesting tools. Thus, the main objective of this study was to field evaluate the efficiency of four manual cassava harvesting techniques under different land preparation methods in terms of field capacity,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Farm power and machinery; Agronomy cassava; Field capacity; Drudgery; Coppiced; Efficiency. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2793 |
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| Nkem, Owoidoho; Olayemi Ayobami , Oladejo; Folarin Alonge, Akindele. |
| Convective hot air drying of cocoyam slices was investigated at different drying temperature (40 to 90) and slice thickness (2, 4, 6 mm) at an air velocity of. The effect of drying temperature and slice thickness on the drying characteristics and drying time were determined to study the effects of heat on processed cocoyam. Mathematical modeling of the thin layer drying process was performed using eight thin layer drying models. The models were tested for validity using coefficient of determination (), chi square () and root mean square error (RMSE). The effect of the drying temperature on the colour of dried cocoyam was also investigated. The colour was measured using CIE L* a* b* method. The results showed that, increasing the drying air temperature and... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8709 |
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| Zare, Dariush. |
| The drying characteristics of green peas during combined hot air-infrared drying were examined. The experiments were carried out for combination of four infrared power intensities (0, 0.2, 0.4 and 0.6 W.cm-2) and three levels of drying air flow rate (0.5, 1 and 1.5 m.s-1) and three levels of drying air temperatures (30, 40 and 50° C). Among several models which were fitted to the experimental data, the Three Term model was introduced to be the most appropriate model to predict moisture ratio as a function of air flow rate, drying air temperature and infrared power density. The statistics indexes of 99.7%, 0.000121, 0.0000 and 0.000121 for R2, X2, MBE and RMSE were obtained for the Three Term model, respectively. Application of infrared radiation in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hot air-infrared drying; Effective moisture diffusivity; Thin layer drying; Green peas; Iran. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3155 |
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| Rahmanzadeh Bahram, Hadi; Hassan-Beygi, Seyed Reza; Kianmehr, Mohammad Hossein; Valaei, Iman; Mohammadi Mazraeh, Hossein. |
| Physical properties of granular solids are essential to design appropriate, efficient, and economic bulk solids handling and storage equipment. Flow of vermicompost is often restricted by caking and bridging, which occurs during transportation and storage. This problem could be due to a number of factors including storage moisture, temperature, particle size, and consolidation stress. There is lack of study on the effect of the mention factors simultaneously on flow index, cohesive strength and angle of internal friction of vermicompost. The aims of this work were to discuss the primary factors affecting flowability of vermicompost as granular solids and powders, as well as using shear testing methodologies for this biomass material. The experiments... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2457 |
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| Monicka, A.Asha; Pandiarajan, T; Solomon, A. Brusly; Ganapathy, S. |
| Manual grading of dehusked coconut often leads to low profit than expected by the farmers. Appropriate grading systems guarantee a better income for the coconut growers. Therefore, a simple machine was designed and developed to grade the de-husked coconut based on its weight. The developed grader consists of an electronic weighing assembly, carrier cups with four bar linkage mechanism, proximity sensor, pneumatic actuators, and drive mechanism. Before the fabrication of grader, the tilt angle of carrier cup mechanism was optimised to ensure a free falling behaviour of dehusked coconut. The performance test of weight grader was conducted by varying the angular velocities of carrier cups (12, 14 and 16 rad/min) and signal settling time of the load cell (2, 3... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6591 |
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| Adekola, Kehinde Adedeji. |
| This paper studied the effects of food extruder die dimensions on the extrudate expansion indices using twin-screw extruder. The extruder has 59.6 mm screw diameter and screw L/D ratio of 20. The die dimensions considered are die length, die diameter and die temperature. The feed material used is yellow corn flour. Dies with diameter ranging from 2.5 – 5.0 were used to determine the effect of die nozzle diameter on extrudate expansion. Results obtained showed that radial expansion of the extrudate decreased with increasing die diameter. An average reduction of about 42% in radial expansion was recorded for a difference of 2 mm in die diameter. The overall expansion of the extrudate was not affected by changes in die diameter for all the diameters and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dies; Dimensions; Extrudate; Expansion; Extruder. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3059 |
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| Kim, Hak-Jin. |
| A front-end loader for agricultural purposes is the most commonly used implement for agri-tractors in Korea. As it is operated to raise, lower and carry various objects in a farming field, it introduces a large amount of stress to a tractor, causing vibrations and often lead to a mechanical breakdown. These high stresses are observed at the starting and ending points of operation, that is, the points at which the highest acceleration and deceleration occur. To reduce the sudden change of the speed, soft-start & end operation were tested with an electrohydraulic directional valve, which has a built-in ramp time spool control function. This valve was controlled by SAE-J1939 associated messages via CANBUS. This shock-absorbing system contains three ECUs... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Front-end loader; Shock absorbing; Electrohydraulic directional valve; J1939; ECU.. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3136 |
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| Hussein, Jelili Babatunde; Oke, Moruf; Sanusi, Mayowa; Adeyanju, James. |
| This study aimed to model the drying kinetics (Drying Time (DT), effective moisture diffusivity (Deff), and Specific Energy Consumption (SEC)) of tomato slices dried with a convective hot-air dryer using Artificial Neural Networks (ANN) and Neuro-Fuzzy Inference System (ANFIS). The tomatoes were pretreated with Water Blanching (WBP), Ascorbic Acid (AAP) and Sodium Metabisulphite (SBP); sliced into 4, 6 and 8 mm thickness and dried at 40, 50 and 60oC air temperatures. The experimental drying data were fitted to ANN and ANFIS models, while the best topology was obtained. The model's predictive performance was determined using the coefficient of determination (R2), Means Squared Error (MSE), Root Means Squared Error (RMSE) and Mean Absolute Error (MAE)... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8421 |
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| Navid, Hosein; Fathipour, Amir; Karimi, Hadi; Ghaffarnezhad, Ali; Wang, Ning. |
| Optical seed mass flow sensors are widely used on seed drills and planters. An important challenge in these sensors is their malfunction in a dusty condition. Dust caused by soil and seeds may sit on the light elements and disrupt its function. In this study, an approach was developed to compensate this effect. A non-contact intelligent system with infrared diodes and a microcontroller with ARM architecture was built up to monitor the seed flow in the delivery tube of seed drills. At the hardware phase, a glass with a different radius of curvature was installed in front of the elements. The semi-cylindrical glass placement in front of the optical elements meant that the arrangement was sealed against dust. Besides, the fall of the seeds tangential to the... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8325 |
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| Ogunnigbo, Olawale Charles; Dare, Adetan; Olusola, Olusunmade Femi. |
| This study evaluates the performance of a modified flour mixer for use as a wet bean de-hulling device. The effect of soaking time, running time and operating speed was investigated. The machine was driven at 150, 200, 250, 300 and 350 rpm, for operating times 1, 2, 3, 4 and 5mins in dehulling beans soaked in water at ambient temperature of 29 ± 2oC for 2, 4, 6, 8 and 10 minutes. The results showed that soaking time, operating speed and machine running time have significant effect (at 5% significance level) on all the performance indices of the machine. The highest de-hulling efficiency of 92.68% with percentage seed breakage of 31.35% was observed for black eye pea; corresponding values for brown beans were 91.65% and 25.20% respectively. These values... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3977 |
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| Gajera, Ramesh R.; Joshi, D. C.. |
| Abstract: Bottle gourd (Langenariasiceraria), Aonla (EmblicaofficinalisGaertn.), Lemon (Citrus x limon) and Ginger (Zingiberofficinale) juice was blended in the proportion of 87.90: 23.40: 5.70: 6.00 mL, respectively. Prepared blend juice was hot filled in glass bottles and thermally processed over a temperature range over 80-950C for 5-30 min. Significant difference was observed in ascorbic acid (vitamin C), total plate counts and, yeast and mould counts (P<0.05), while no significant difference was in pH and TSS (P>0.05). The best thermal process was found at 85°C hot filling and processing at 85°C for 5 min. At this temperature-time combination, 3.52 pH, 5.17 oBrix TSS, 38.32 mg per 100 mL ascorbic acid, 35 cfu mL-1 total plate counts, 2... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Agril. Process and Food Engg. Blend juice; Thermal processing; Storage stability; Physicochemical; Microbiological. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2783 |
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| Ogunwande, Gbolabo Abidemi. |
| Poultry manure, cow dung and swine manure were digested in cube-shaped anaerobic digesters of equal volume but different surface areas (SAs) (5.38, 10.0 and 11.6 dm2) in a two-factor experiment. The digesters were agitated once a day during the experiment. The results showed that neither the manure type nor SA affected (p > 0.05) substrate temperature and pH, but both had (p ≤ 0.05) on biogas yield (BY. Poultry manure had the highest BY followed by swine manure and cow dung (1.00, 0.59 and 0.11 dm3 kg-1 VS fed day-1, respectively). Within the SAs investigated, BY increased as digester SA increased (0.27, 0.68 and 0.74 dm3 kg-1 VS fed day-1 for 5.38, 10.0 and 11.6 dm2, respectively). The results of the regression analysis showed that digester diameter to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogas yield; Digester surface area; Poultry manure; Swine manure; Cow dung. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3861 |
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| Registros recuperados: 1.540 | |
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