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| Registros recuperados: 70 | |
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| Calcante, Aldo; Fontanini, Luca; Mazzetto, Fabrizio. |
| Purchasing and maintaining agricultural machines are two of the most considerable costs of the agricultural sector, which includes farm equipment manufacturers, farm contractors and farms. In this context, repair and maintenance costs (R&M costs) generally constitute 10%-15% of the total costs related to agricultural equipment and tend to increase with the age of the equipment; hence, an important consideration in farm management is the optimal time for equipment replacement. R&M cost estimation models, calculated as a function of accumulated working hours, are usually developed by ASAE/ASABE for the agricultural situation in the United States, which is considerably different than agricultural context of other countries. So, the goal of this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Agricultural mechanization Repair and maintenance costs; Self propelled combine harvesters; Cost estimation models.. |
| Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2512 |
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| Kolar, Praveen. |
| An activated carbon-supported sulfonic acid catalyst was synthesized and employed as a hydrolysis agent for hydrolysis of model and real biomasses including cellulose, starch, cellobiose, and switchgrass. Model biomasses including cellulose, starch, and cellobiose were hydrolyzed at 90 0C for 6 and 24 h while switchgrass was hydrolyzed at 75 and 90 0C for 6, 12, 18 and 24 h. For model biomasses, highest glucose was produced from cellobiose corresponding to 237. 1 ± 0.86 mg g-1 after 24 h, whereas switchgrass yielded a maximum glucose of 72.67 ± 1.03 mg g-1 after 18 h at 90 0C. In addition, effects of physical (ultrasonication) and chemical (NaOH and H2SO4) treatments prior to hydrolysis of switchgrass were also studied. The data suggested that physical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Biosystems Engineering Activated carbon sulfonic acid catalyst hydrolysis biomass switchgrass USA. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3898 |
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| Olorunnisola, Abel Olajide; Boboye, Adetutu. |
| Use of cement-bonded composites is gaining prominence in construction works across the globe. Typical uses include roofing, cladding, ceiling and tiling of walls and floors. The use of these materials as hollow pipes is yet to be fully explored. There is, also, the challenge of the relatively high cost of Ordinary Portland Cement (OPC) in many developing countries which adds to the overall cost of cement-bonded composite products. This study was conducted, therefore, to develop composite hollow pipes using natural sponge fiber (Acanthanus montanus) as reinforcement at 3% by weight of cement. Lime, derived from welder’s carbide waste, was added as partial replacement for cement at 0 (control), 10%, 20%, 30%, 40%, and 50% levels respectively. The effects of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Farm Structures and Construction Acanthanus montanus carbide waste composites hollow pipes rural construction. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3506 |
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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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| 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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| Registros recuperados: 70 | |
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