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| Registros recuperados: 1.540 | |
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| Shahbazi, Feizollah; Rahmati, Satar. |
| For proper design of grading systems of horticultural crops, important relationships between the mass and other properties of fruits such as length, width, thickness, volumes and projected areas must be known. The aim of this research was to measure and present some physical properties of persimmon fruits and correlating the mass of persimmon fruits to measured physical properties using linear, quadratic, S-curve and power models as three different classifications: (1) Single variable regressions of persimmon dimensional characteristics, (2) single variable regressions of persimmon mass based on projected areas and (3) estimating the persimmon mass based on its volumes. The results showed that mass modeling of persimmon based on length and the first... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Persimmon fruit; Physical characteristics; Mass prediction.. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2688 |
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| Lak, Mohammadbagher; Minaei, Saeid; Soufizadeh, Saeid; Banakar, Ahmad. |
| Biophysical properties of agricultural materials are important in designing of processing machines. In this study, some physical properties of tomato (Solanum lycopersicum) fruits were determined and their mutual relationships were studied. Dimensions (major diameter, minor diameter, and length), mass, volume, fresh and dry matter weight, as well as rupture point under uniaxial loading were measured. Other properties; including Poisson's ratio, modulus of elasticity, energy for rupture, density, arithmetic mean diameter, geometric mean diameter, diameter of equivalent volume sphere, and sphericity were calculated accordingly. Statistical analysis of the data indicated significant correlations between the rupture force and fresh weight, volume, dry weight,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biosystems Engineering; Food Engineering correlation; Elasticity; Geometry; Mechanical properties; Rupture. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4880 |
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| Mohamed Samer; Cairo University, Faculty of Agriculture, Department of Agricultural Engineering. |
| The “Green Building” is an interdisciplinary theme, where the green building concept includes a multitude of elements, components and procedures which diverge to several subtopics that intertwined to form the green building concept. Generally, the green building is considered to be an environmental component, as the green building materials are manufactured from local eco-sources, i.e. environmentally friendly materials, which are then used to make an eco-construction subject to an eco-design that provides a healthy habitat built on the cultural and architectural heritage in construction while ensuring conservation of natural resources. This ensures disassembling the building components and materials, after a determined building lifetime, to... |
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Palavras-chave: Agricultural Engineering; Agricultural Buildings and Bioenvironmental Engineering green building; Agricultural buildings; Biocement; Eco-cement; Green concrete; Green roofs; Low-energy building; Zero-carbon building; Eco-construction. |
| Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2329 |
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| Azadbakht, Mohsen; Ghajarjazi, Ehsan; Abdigaol, Farhad; Amiri, Emad. |
| In this research the effect of moisture at three levels (57, 67, and 77 %) on the physical properties of the Barkat bean variety including, including dimensions, geometric mean diameter, volume, sphericity index and the surface area was determined. And the influence of different moisture content levels (67,57 and 77%), in two loading orientation (longitudinal and transverse) and three loading speed (8,6 and 10 mm min-1) on the mechanical properties of the maximum deformation, rupture force, rupture energy, toughness and the power to break the broad bean was investigated. It was observed in the mechanical properties that moisture changes and loading speed were affective at 1% on rupture force, rupture energy, and toughness. Loading orientation was affective... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broad bean; Physical properties; Mechanical properties.. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3339 |
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| Jaliliantabar, Farzad; Lorestani, Ali Nejat; Jaliliantabar, Farzad Jaliliantabar. |
| In this study, some important physical and mechanical properties of the hawthorn and the effect of moisture on them were investigated. The effect of moisture at two levels (64.01% and 70.1%, w.b.) on the geometric dimensions (length, width, thickness, arithmetic mean diameter, geometric mean diameter, degree of sphericity, surface area, projected area, criteria projected area, mass, volume and the apparent), true density, porosity, coefficient of static friction and coefficient of rolling on three levels (wood, glass and galvanized) and mechanical properties obtained by impact testing machine using a randomized factorial design was evaluated by software SPSS18. Results indicate that moisture has an effect on the physical properties of the hawthorn. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hawthorn; Physical properties; Maximum force at impact; Mechanical properties; Moisture content. |
| Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2676 |
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| Mahmoud Mohamed, Wael Abo El-Magd; Nabil. Shaban. M.; Eissa , Ahmed. Salah.; Mousa, Ahmed. M.. |
| This research aimed to manufacture a simple fiber extraction machine. The machine prototype consisted of available raw materials. The beater cylinder is the most significant component in this machine. The electric motor of 0.75 kW was used to rotate the beater cylinder. The machine theory is based on the repeated rapid beating of the beaters on a slice-stem of banana. This beating simulated what labor does by using hand hammers to eliminate the juice and extract the fibers. The machine was tested under three rotational speeds of the beater cylinder 650, 750, and 850 rpm and using three beater cylinders with a different number of beaters 8, 10, and 12. The fibers produced by the machine were straight, of good quality, and not shredded, this was achieved in... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8809 |
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| Menguito, Jerson Jose Talag. |
| The study involved the fabrication and formulation of an alternative system that use natural frequency analysis for weight measurement of mango fruits. The system was mainly composed of an ADXL345 accelerometer, Arduino UNO board, stainless steel cantilever beam, frames and breadboards, and two developed program algorithms.The Frequency Detector (FD) and Frequency and Weight Detector (FWD) algorithms were written using National Instruments LabVIEW 2014. Thirty (30) carabao mango fruits of varying sizes were used during testing. The actual weights of the samples were obtained using a digital weighing scale. Size classification of each mango fruits based on actual weight and based on the weights predicted by the system involving natural frequency analysis... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4843 |
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| Atoyebi, Jelili Olaniyi; Bello, Sururah Apinke; Owolarafe, Oseni Kehinde. |
| The significance of a break-even point analysis is much important to the small- scale enterprises in determining profit or loss incurred. In this study, a case study approach was used to test this concept on iru production using structured oral interviews and visual observation of a production centre in Nigeria. Data analysis was achieved using production cost, the unit quantity and break-even point analysis. The results show that the monthly average cost of N 32,237.00, the monthly average variable cost of N71,334.00, Contribution Margin Ratio of 47.06 % and break-even sales of N 68,502.00 were obtained using a traditional method of iru production (TIPP). In a mechanized method (MIPP), monthly average fixed cost of N 85,887.00, the monthly average... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Locust bean- processing; System; Traditional; Mechanized; Break-even analysis; Production cost; Profitability. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6721 |
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| Marey, samy Abdelgaid; Drees, Abdelfatah Mahmoud; Ibrahim, Mohamed Mahmoud; Aboegela, Mohamed Abdelgawad. |
| A low-cost Almond (Prunus dulcis) kernel extraction machine was locally designed, manufactured and evaluated. Kernel extraction by the machine was conducted by first crushing the nut, and then separating seeds from a shell. The performance of the developed machine was evaluated in terms of machine productivity, cracking efficiency, kernel breakage and specific energy requirements. The evaluation was conducted at roller speeds (ranging from 0.5 to 1 m/s), rollers clearance (ranging from 14 to 25 mm) and two different roller casing materials (rubber and metal mesh). Results revealed that the increase of the roller speed was found to increase the machine productivity. However, it caused a decrease in the kernel breakage, cracking efficiency, energy... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4147 |
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| AVIARA, NDUBISI A.; OJIOFOR, CHINEDU G.; OWOLARAFE, OSENI K.; OGUNSINA, BABATUNDE S.; OLUWOLE, FASIU A. |
| Oil point pressure of sheanut kernel was determined under different pre-processing conditions of moisture content, heating temperature, heating time and particle size. Results show that the pressure decreased as moisture content increased from 4% to 6%, and thereafter, increased with further increase in moisture content. It equally decreased with increase in temperature and heating time. Highest oil point pressure value was 2.6389MPa for coarse kernel particles at 4% moisture content heated at 50oC for 5 min, and 1.5554MPa for fine particles at 10% moisture content heated at 50°C for 5 min. Lowest value for coarse and fine kernel particles was 0.929MPa and 0.6380MPa respectively and this was obtained at the conditions of 6% moisture content, 100oC and 15... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sheanut; Seed oil expression; Oil seed processing; Oil point pressure; Moisture content. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4310 |
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| TOMAR, ARVIND SINGH. |
| In this study, two site-specific solar radiation (Rs) and net radiation (Rn) based equations for estimating reference evapotranspiration (ET0) were developed and their performance were statistically analysed in comparison to widely accepted FAO Penman-Monteith method (PMF-56) and four other standard radiation methods for sub-humid Hazaribagh region of Jharkhand. These two equations were developed with daily values of Rs and Rn in conjunction with maximum and minimum air temperature by taking daily PMF-56 ET0 values as index with weather dataset of 15 years (1990-2004). The performance of these equations validated with carefully screened daily weather dataset of eight years (2005-2012) with other considered standard methods revealed that they estimated ET0... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Site-specific; Radiation; Statistical performance; India.. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3121 |
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| Registros recuperados: 1.540 | |
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