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| Registros recuperados: 1.540 | |
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| Helal, Farouk; El-Badawi, Alaa; El-Wardany, Ibrahim; Ali, Nematallah; Aboelazab, Osama. |
| Sixty growing New Zealand White (NZW) male rabbits aged six weeks, weighed 750.0±5g were used in a feeding experiment lasted 9 weeks. Rabbits were housed in controlled-climatic conditions at a mean ambient temperature 33.1°C and relative humidity 43% to keep rabbits under heat stress conditions. The rabbits were randomly distributed to four equal groups (five replicates each). The 1st group fed the control diet (R1), R2 group fed diet supplemented with 1% moringa leaves, R3 group fed diet supplemented with 1% rosemary leaves, while R4 group fed diet supplemented with a mixture of moringa and rosemary leaves of 0.5% each. Diets and water were provided ad-libitum over nine weeks. The results revealed that live body weight, average daily gain and feed... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4509 |
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| Ansari, Mohammad Zaheer; A. K., Nirala. |
| Bio-speckle can be used as a method for analysing the activity of biological materials illuminated with laser beam. Physically, bio-speckles are the result of scattering of coherent light on moving particles inside living tissue. Therefore, the aim of this study was to investigate bio-speckle activity in lemons and determine the age of the lemon fruit from the observation of its dynamic speckle pattern. The speckle pattern of laser light scattered in lemon fruits were measured through their quantification. For the quantification of the variation by bio-speckle, two different methods of image analysis were used: moment of inertia and the spatial temporal speckle correlation coefficient. The bio-speckle activities were also characterized by the line... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bio-speckle; Time history speckle Pattern; Line profile; Lemon; Activity. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3237 |
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| Ijasini John Tekwa; Lecturer; Emmanuel Kefas Bwade; Lecturer. |
| ABSTRACT Estimation of irrigation water requirement of maize (Zea-mays) was conducted based on a ten (10) year rainfall data (1986-1995) of Maiduguri, Borno state using pan evaporation method. Climatic parameters including potential evapotranspiration (ETo), maize crop evapotranspiration (ETm), effective rainfall (Pe), and maize crop irrigation water requirement (IWRm) were estimated using prescribed procedures. The result showed that the Pe for Maiduguri was lowest in June (1.09mm/day) and highest in August (3.91mm/day). Both ETo(8.70mm/day) and ETm(4.35mm/day) recorded highest estimates in June and declined sharply in the months of August and October, respectively. The IWRm for Maiduguri was estimated at 3.26, 0.11, 0.05, 1.81 and 1.24mm per day for the... |
| Ano: 2011 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1552 |
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| Taghinezhad, Javad; Alimardani, Reza; Jafary, Ali. |
| A capacitive sensor method for measuring billet spacing uniformity with sugarcane (Saccharum officinarm L.) billet planter is investigated in this paper. Therefore, an electronic device based on capacitive sensor was designed and developed to predict the planting spacing of sugarcane billets. It consisted of four components: a rectangular parallel plate capacitor, electronic circuitry, microcontroller, and display unit. Accordingly, a prototype of the precision metering device for sugarcane billets was developed. After calibrating the monitoring system, the results were verified with calibrated curve by means of linear regression and paired T-test. The performance of the device, including quality of feed index (QFI), multiple index and miss index was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capacitive system; Sugarcane; Compare monitoring; Performance indices; Precision planting. |
| Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2576 |
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| Ohagwu, Chukwuemeka Jude; Okonkwo, Ifeanyi Wilfred; Mbah, Godwin Christopher Ezike; Njoku, Howard Okezie. |
| Computational modeling, simulation and validation were carried out on Trombe wall solar chick brooder used for optimal poultry production. Predictive linear differential equations based on physical, mathematical principles and relationships governing thermo-physical properties of the components of the brooder were formulated, discretized and expressed in their finite different forms using SCILAB 5.5.2. T-test statistics was carried out on predicted and measured mean data: temperature of Trombe wall glaze (TG1), temperature of pebble glaze (TG2), temperature of the pebble bed bin (Tp), temperature of the brooding room (TBr), and temperature of the Trombe wall outer surface (Tw (outer surface))then separated using Levene test for equality. The model... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Computational modeling; Passive Trombe wall solar chick brooder; Simulation; Validation; Poultry production. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6833 |
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| AVIARA, NDUBISI A.; Iyilade, Idowu J.; Oyeniyi, Samuel K.; Aremu, Ademola K.. |
| The use of inappropriate equipment to crack bush mango nut and obtain the kernel has adversely affected the efficiency of its processing operations. The manual method, which involves cracking the nut with stone or pestle and mortar, is not only slow and risky, but also wasteful. In order to develop appropriate processing equipment for the nut, knowledge of its mechanical properties is necessary. This study was undertaken to determine some strength properties of the nut at different moisture contents under lateral and longitudinal loading orientations, using Universal Testing Machine (UTM). In the moisture range of 7.52% - 20.6% (d.b) under both lateral and longitudinal loading orientations, results of tests showed that all the strength properties (bioyield... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Post harvest Technology; Crop Processing Mechanical properties; Bush mango nut; Irvingia gabonensis; Moisture content; Loading orientation; Universal Testing Machine (UTM). |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5092 |
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| Kimurto, Paul K; Gottschalk, Klaus; Kinyua, M.G.; Ogola, J.B.O.; Towett, B. K.. |
| P. K. Kimurto1, K. Gottschalk2, M. G. Kinyua3, J. B. O. Ogola4, B. K. Towett 1(1. Department of Crops, Horticulture & Soil Sciences, Egerton University, P.O. Box 536, Njoro, Kenya;2. Leibniz-Institut für Agrartechnik Potsdam-Bornim e.V. ATB, Max-Eyth-Allee 100, 14469 Potsdam, Germany;3. Department of Plant Breeding and Biotechnology, Moi University, P.O. Box 39000, Eldoret, Kenya;4. Department of Plant Production, University of Venda, a, Private bag X5050, South Africa) Abstract: Carrying out field trial-research in dryland areas is usually expensive and costly for most national breeding programmes; hence development of simple crop simulation models for predicting crop performance in actual semi-arid and arid lands (ASALS) would reduce the number of... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2010 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1578 |
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| BİLGİN, Sefai. |
| Greenhouse cultivation is widespread in Turkey, and tomato, pepper and eggplant among the vegetables are grown densely in greenhouses. Every year, huge amounts of crop residue are produced from these greenhouses, and the vast majority of these residues are dumped in landfills and out of the greenhouses without evaluating in any way. These crop residues are organic matters and can be evaluated as a biomass energy source. In this study, dried ground greenhouse pepper crop residues were briquetted in the hydraulic press with maximum capacity of 210 MPa and a punch-conical die set, and physical properties of briquettes regarding briquette quality were determined. The briquetting experiments were conducted at 7.06 % moisture content (w.b.), 0.732 mm geometric... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Greenhouse pepper crop residue; Briquette; Briquette physical properties; Turkey. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3163 |
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| Bulanon, Duke M.; Burks, Thomas F.; Kim, Dae G.; Ritenour, Mark A.. |
| A recently discovered fungal disease called citrus black spot, is threatening the Florida citrus industry. The fungal disease, which causes cosmetic lesions on the rind of the fruit and can cause a tree to drop its fruit prematurely, could possibly lead to a ban on sales of fresh Florida citrus in other citrus-producing states. The objective of this research is to develop a multispectral imaging algorithm to detect citrus black spots based on hyperspectral image data. Hyperspectral images of citrus fruits (Valencias) were collected in the wavelength range of 480 nm to 950 nm. Five surface conditions were examined, citrus black spot, greasy spot, melanose, wind scar, and normal one. The first part of the image analysis determined the optimal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering citrus disease; Multispectral imaging; Hyperspectral imaging. |
| Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2382 |
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| Kenji Imou; The University of Tokyo; Yutaka Kaizu; Shinya Yokoyama; Taro Nakamura. |
| High-precision ground speed sensors could be used as a component of navigation or control systems for agricultural vehicles. This paper describes the characteristics of the speed sensor developed by the authors, focusing on the effects of pitch angle. For this purpose, experiments were carried out at various sensor depression angles. The results showed that the output was almost the same as the theoretical value for depression angles of 40 to 50 degrees, although the measurement error was relatively large in the case of artificial turf with short pile. Measurement tests at various angles between the traveling direction and the sensor direction in the horizontal plane were also carried out to determine the possibility of velocity vector measurement... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1232 |
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| Dimitris K. Papanastasiou. |
| Many researchers have found that physiology, welfare, health, and productivity of ruminants are significantly affected when they are exposed to heat-stress conditions. In such cases, heat-stress may also cause a reduction of farmers’ profit in various ways. Heat-stress levels are significantly affected by the prevailing meteorological conditions. This paper aims to study the potential daily peak heat-stress conditions to which sheep are exposed and to classify them according to the prevailing meteorological conditions. For these purposes, temperature, relative humidity, wind speed and incoming solar radiation data were analyzed. The meteorological data were recorded during the summers of the period 2007 – 2012 by an automated... |
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Palavras-chave: Sheep; Heat-stress; Temperature humidity index; Meteorological conditions; Cluster analysis; Greece. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3099 |
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| Handrinos, Michael; Rotsios, K.; Moshonas, G.; Folinas, D.. |
| The aim of this paper is to design a friendly-user framework for a successful launch of a locally-based start-up in the food supply chain. Specifically, the study is focused on a Small Medium Enterprises (SME’s) cooperative store in a farm school. The store is operated by the students in the context of their entrepreneurship, business and marketing classes. Authors made a number of interviews with the managers and employees of the locally-based store so as to identify its potentials and challenges. The outcome of the study is a framework dealing with managerial, as well as, technological aspects and even if refers to a specific SME it will act as a road map for an effective start-up development. Keywords: customer loyalty, American farm school, SME... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Customer loyalty; American farm school; SME co-operatives; Agri-business. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2911 |
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| Khodabakhshian, Rasool; Khojastehpour, Mehdi. |
| The degree of ripeness is a key factor for consumption, marketing, and minimal processing of fruits. This study was conducted to describe the physicochemical changes (geometrical and gravimetrical properties) and the relationships between different ripeness indexes i.e. pH, total soluble solids (TSS), titratable acidity (TA), firmness, dry weight content (DW) and color of date fruit during four ripening periods on-tree including Kimri, Khalal, Rutab and Tamr stages. These four stages were selected by visual fruit color and days after anthesis (DAA). Duncan’s multiple tests was performed to separate means at a 5% level of significance. A correlation analysis by Pearson correlation matrix method was also made between the colorimetric ripeness parameters and... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6731 |
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| Adisa, Alex Folami; Udo, Sunday Bassey; Ismaila, Salami Olasunkanmi; Adejuyigbe, Samuel Babatunde. |
| Common traditional techniques of breaking palm kernel nuts in rural areas where it is produced involved a lots of drudgery and hazard. The goal of this research work was to design, construct and test the performance of a palm kernel nut cracking machine for local use at affordable cost. Samples were test-ran, cracked and replicated at different shaft speeds (r/min). with developed machine. The results showed that the un-cracked nuts were 2.50%, 2.00%, 1.50%, 1.25% and 1.00 %, the partially cracked were 2.75%, 2.75%, 2.25%, 2.00% and 1.75 %, the un-broken kernels were 93%, 94%, 95%, 94.5% and 94 %, that of broken kernels were 1.75%, 1.50%, 1.50%, 2.50% and 3.25 % at set speeds of 800, 1200, 1600, 2000 and 2400 r/min respectively. The throughput of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Farm Machinery; Post harvest crop processing and storage performance; Throughput; Cracking; Palm kernel nut; Efficiency. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3417 |
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| Registros recuperados: 1.540 | |
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