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Utilizing visible and near infrared spectroscopy based on multi-class support vector machines classification to characterize olive oil adulteration CIGR Journal
Ghasemi-Varnamkhasti, Mahdi; Amini-Pozveh, Samaneh; Mireei, Seyed Ahmad; Mishra, Puneet; Ghosh, Satyabrata; Ghanbarian, Davoud; Izadi, Zahra.
Rapid and non-destructive adulteration detection is of particular importance to oil industries. This paper presents an application of visible and near-infrared spectroscopy (VNIR) for detection of adulteration levels in olive oil. Sunflower oil was used as an adulterant to olive oil and adulteration samples with different levels ranging from 0 to 40% were prepared and used for the experiments. The spectra were first considered in the range of 500-900 nm and then smoothened and normalized to reduce the light scattering effects. Principal component analysis (PCA) was performed on the spectra to have a primary data visualization and feature extraction. The extracted PCA scores were used to calculate the Mahalanobis distances of the adulterated samples from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food and olive oil Olive oil industry; Support vector machine; Computer aided classification; Spectroscopy.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4681
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Validation of EGY-DRIP program Application in Determining the Optimum Lateral Length CIGR Journal
Pibars, Sabreen KH; Imam, Hisham M..
In drip irrigation systems the lateral lines are the pipes on which the emitters are installed. The accurate design of drip irrigation laterals needs to determine the total energy losses that include the pipe friction losses along the lateral line and minor losses due to emitter connections. A friendly user interface computer application named EGY-DRIP had developed for drip irrigation system design. The program had written in Microsoft visual basic 2013 to carry out hydraulic calculations of drip irrigation sub-unit design. The hydraulic calculation based on inputs of water properties, quality, soil characteristics, reference evapotranspiration, crop factors, and irrigation system components (drippers, pipes, and fittings). The program supported with an...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Validation; Drip irrigation system; EGY-DRIP Program; Friction losses..
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5625
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Validation of Universal Soil loss Equation for Selected Soil Locations in North Central Nigeria Using Rainfall Simulator CIGR Journal
Kuti, Ibrahim Abayomi.
Erosion control in Nigeria must be met with high standards in other to attain a sustainable agricultural practice to meet the demand of the growing population in terms of food production. The study is aimed at estimating soil loss using a locally made rainfall simulator and accertaining the performance of the Universal Soil Loss Equation (USLE) model in predicting soil loss in the study location. For this to investigated, experiments were conducted using rainfall simulators, which is readily not available in Nigeria due to its high cost. The drop velocity (DV) of the constructed rainfall simulator was calculated to be 8.101m/s and 2.443 m/s respectively when operated at maximum and minimum intensity. The performance test revealed that the experimental...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bare; Rainfall; USLE; Soil; Vegetative.
Ano: 2021 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6719
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Value Chain Improvement of Fresh Sweet Potato through the Utilization of Mechanical Harvester CIGR Journal
Flores, Edgar Dulay.
The study determined the postproduction handling systems, losses and the needed intervention to improve the fresh sweet potato chain. Surveys were conducted among 350 sweet potato farmers in four major sweet potato producing provinces supplemented by the key informant interviews, focus group discussion and on-line search of secondary data. Actual loss assessments were undertaken adapting the tracing method and following two commercial marketing channels replicated 6 times for each marketing channel. The total average postharvest loss was 32.09 percent. Among the postproduction operations, quantity losses during harvesting were the highest at 15.96 and 17.94 percent for Bataan and Tarlac, respectively. Along the fresh sweet potato market chain, the farmer...
Tipo: Info:eu-repo/semantics/article
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4233
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Variability of wind conditions in citrus groves compared with those recorded outside CIGR Journal
Al-Jumaili, Ahmed Abed Ali; Salyani, Masoud.
Wind velocity and direction, which are normally reported at certain time intervals, fluctuate substantially within a short time frame.  These fluctuations may have a significant effect on spray deposition of air-assisted sprayers used in citrus production.  Wind measurements are usually made inside or outside a grove at about 10 m height but the latter may not accurately represent the wind conditions within the grove.  The objective of this study was to compare data recorded by the Florida Automated Weather Network (FAWN) outside the grove at 10.0 m above the ground with the measurements made within a citrus grove at different heights.  Within the grove, wind velocity and direction data were collected at 10.0, 3.6, 3.0, 2.4, 1.8, 1.2, and 0.6 m above the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural engineering; Spray technology wind direction; Wind measurement site; Wind velocity; Wind sensors.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2555
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Variable rate spraying in varied micro-meteorological conditions CIGR Journal
Khot, L. R.; Ehsani, Reza; Albrigo, L. G.; Swen, W.; Neto, J. C.; Campoy, J. M.; Wellington, C..
This study evaluated effects of crosswind on the variable rate sprayer application treatments spray coverage and deposition on different citrus canopy sizes.  The axial-fan airblast sprayer retrofitted with variable liquid- and air-assist rates was field-tested with different crosswind conditions on small (about 2 m tall and < 1.5 m wide) and medium-sized (about 3 m tall and < 2.5 m wide) canopies.  Crosswinds of 1.3, 2.7, and 4.0 ms-1 on the canopies being sprayed were generated using the stationary conical air shaker as the air blower unit.  Water sensitive papers (WSPs) were used to collect droplet deposits and image processing software was used to analyze the WSPs scanned at 600 dpi.  Percent spray coverage on the WSPs was found to be one of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Airblast sprayer; Adjustable air-assistance; Crosswind; Spray coverage; Citrus..
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2738
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Vehicle Path Planning for Complete Field Coverage Using Genetic Algorithms CIGR Journal
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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Vertical tillage parameters to optimize energy consumption CIGR Journal
Reynolds, Marco Antonio; Campos, Santos Gabriel; Cadena, Martin; Lopez, Juan Antonio; Cuervo, Neftali.
Proper selection and correct use of machinery in agriculture must be understood as a component of a process which aims to optimize crop yield and to make a more efficient use of resources. The objective of this study was the assessment of different chisel plow body arrangements using different settings of the most important operating parameters for tillage work in order to optimize energy consumption for vertical tillage. The influence of different operating parameters of tillage tools on the performance in cultivation practice must be considered before applying deep plowing for a more efficient use of energy. The parameters considered in this study were: 1) working depth based in the critical depth theory 2) position and spacing of chisels 3) number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mecanization; Soil tillage; Conservation energy depth plowing; Tillage; Chisel plow; Energy consumption; Critical depth.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3146
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Vetiver Grass as a Potential Resource for Rural Development in Bangladesh CIGR Journal
M. P. Islam; Md. Khairul Hassan Bhuiyan; M. Z. Hossain.
Good quality lands are degraded by water and wind erosion, loss of organic matter, water-logging and salinity in Bangladesh which decreases crop yield and biodiversity. Lands are also contaminated with heavy metals due to growing industrialization. There are lots of expensive methods for controlling soil erosion, soil salinity, and land degradation, which can not be achievable in developing countries. The environment-friendly vetiver grass is available all over Bangladesh and it is economically feasible to control land degradation.  Vetiver grass can also be used for other purposes, as mentioned in this paper, and poor people can earn money utilizing vetiver grass.  But most of the people are unaware of the utility of this natural resource and therefore,...
Ano: 1969 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1267
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Vibration analysis influence during crisis transport of the quality of fresh fruit on food security CIGR Journal
Amer Eissa, Ayman Hafiz; Albaloushi, Nabil S.; Azam, Mostafa M..
Mechanical damage of agriculture produce is a major problem in the harvest and post-harvest chain.  This damage could cause huge economic loss.  In addition, it could lead to serious food safety concerns.  Several cases of foodborne illness have been traced to poor or unsanitary postharvest practices.  Escherichia coli (E. coli) O157:H7, Salmonella, Shigella, Listeria, Cryptosporidium, Hepatitis, and Cyclospora are among the diseases and disease-causing organisms that have been associated with fresh fruits and vegetables.  Measurements of mechanical characteristics of agricultural products under different static and dynamic loads should help in predicting the type and magnitude of mechanical injuries which will help in minimizing losses and improve the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Systems Engineering Vibration Analysis; Crisis Transport; Quality; Damage and Food safety..
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2393
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Vibration analysis of a small diesel engine using diesel-biodiesel fuel blends CIGR Journal
Heidary, Bahareh; Hassan-beygi, S. R.; Ghobadian, B.; Taghizadeh, A..
Biodiesel as an environmentally friendly fuel has the potential to provide comparable engine performance results.  Biodiesel is a renewable fuel produced from vegetable and seed oils, animal fats or waste edible oils.  Sound and vibration caused by the combustion process in the engine might have direct effects on users.   One of the important characteristics of diesel fuels is high noise and vibration.  The present study was carried out to examine the vibration of different diesel-biodiesel fuel blends in power tiller engine.  The main goal was to present fuels with the minimum vibration.  So, the time domain signals were analyzed in five levels of engine speed, three axes and six fuel blends on the engine.  The signal processing and statistical approach...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vibration analysis; Power tiller; Time domain; Frequency domain; Diesel-Biodiesel fuel blends.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2475
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Vibration effects on convective air-drying of bulk pistachios CIGR Journal
Kouchakzadeh, Ahmad.
The convective air drying processes of bulk pistachios in a vibrated bed were investigated. Seven vibrated frequency were characterized in the bed. The results showed that increasing in drying efficiencies from 51.10% in 0 Hz to 76.90% in 50 Hz. Higher vibration intensity could not induce stronger efficiencies. The Logarithmic models were described to satisfactorily drying curve of pistachios for vibrated convective air method.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vibrated bed; Convective air-drying; Bulk Pistachios.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2856
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VIS/NIR spectral signature for the Identification of Peanut Contamination of Powder Foods CIGR Journal
Ghosh, Satyabrata; Domínguez, Teresa R. Cuadrado; Diezma, Belén; Lleó, Lourdes; Barreiro, Pilar; Lacarra, Teresa García; Roger, Jean-Michel.
Visible-Near Infrared reflectance spectra are proposed for the characterization IRMM 481 peanuts in comparison to powder food materials: wheat flour, milk and cocoa. Multidimensional analysis of spectra of powder samples shows a specific NIR band centred at 1200 nm that identifies peanut compared to the rest of food ingredients, regardless compaction level and temperature. Spectral range 400-1000 nm is not robust for identification of blanched peanut. The visible range has shown to be reliable for the identification of pre-treatment and processing of unknown commercial peanut samples. A spectral index is proposed based on the combination of three wavelengths around 1200 nm that is 100% robust against pre-treatment (raw or blanched) and roasting (various...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adulterant; Food analysis; Food composition; Food quality; Allergen; PCA; Spectroscopy.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3216
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Waste shells of Chicken and Guinea fowl eggs as catalysts for the production biodiesel CIGR Journal
Oyelaran, Olatunde Ajani.
Raw material costs are responsible for the greater percentage of biodiesel production cost. In this research chicken and guinea fowl wastes eggshell were used as feedstock for the producing heterogeneous catalyst for production of biodiesel. Proceeding their utilization, calcium oxide (CaO) was obtained by calcining the eggshells which contains calcium carbonate (CaCO3) in a muffle furnace at of 1000 for four hours. The solid oxide catalyst produced were then characterized by the Brunauer-Emmett-Teller (BET) and XRF methods. The activity of the produced catalyst in transesterification of calabash seed oil with methanol was assessed, and the properties of biodiesel obtained were evaluated. The various effect of reaction time, reaction temperature,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiesel; Eggshell wastes; Calcium oxide; Transesterification; Heterogeneous catalyst.
Ano: 2021 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6155
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Waste to energy technologies for solid waste management a case study of Uganda CIGR Journal
Miito, Gilbert John; Banadda, Noble.
Municipal solid waste management is one of the major environmental problems of developing countries. Investments in solid waste management would not only translate into jobs and income but also a cleaner environment. Over years a number of solid waste management technologies have been carried out in many developing parts of the world. Some were successful in generating lasting impacts on the improvement of solid waste management, however, many technologies failed due to unsustainability. This is partly attributed to differences in waste characteristics between developed countries and the less developed countries and the resource constraints in less developed countries. On the other hand, less developed countries are also known for being energy deprived and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: WASTE MANAGEMENT solid waste; Energy; Sustainable; Sub-Saharan Africa; Biomass; Uganda.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3767
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Water loss, sediment deposition-pond age relationships in Lagos State, Nigeria CIGR Journal
OMOFUNMI, Omofunmi Eric.
The issue of sediment in aquatic environments has been a topic of concern for many decades because it harbouring pathogen and decrease water depth.  . The investigation was carried out to identify and proffer solutions to some environmental and management problems that have hitherto affected fish production sub-sector of the economy, using Lagos State, (Western) Nigeria  as a case study. Both surveying and experimental methods were used. The results indicated that of water loss from ponds resulting from evaporation and seepage ranged from 2.5 – 4.6 day-1. Percentage reduction in pond water depth during dry season ranged from 70 – 81 % as compared to the observed percentage increase during rainy season with range of values as, 17 – 34%. The mean rise and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: AGRICULTURAL ENGINEERING/ AQUACULTURAL ENGINEERING Sediment; Water depth; Water loss; Pond age; Lagos State..
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5085
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Water management improvements for agriculture by applying efficient crop schedules in the highland forest of Vilcabamba, Peru CIGR Journal
Enrique Meseth; National Sun Yat-Sen University; Jason C.S. Yu; National Sun Yat-Sen University, Department of Marine Environment and Engineering, Lien-Hai Road 70, 80424 Kaohsiung, Taiwan.
The current work is aimed to improve the water management for agriculture, by applying efficient crop schedules in Vilcabamba -and similar areas of the Andean highland forest-, which can satisfy most of the water requirements with rainfed irrigation and maximise the crops yield.  For this purpose, two field practices were carried out during the dry (September 2012) and wet season (February 2013) to measure rivers and canals flows with the velocity/area method.  Nineteen soil samples were collected on-site and analysed, presenting prevalent sandy loam and loam textures.  Cropwat programme and data on climate, crops and soil were used to estimate crop water requirements and scheme irrigation requirements, indicating that crop evapotranspiration is low due to...
Palavras-chave: Water management; Irrigation requirements Crop scheduling crop water requirements rainfed irrigation water management for agriculture Cropwat.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2750
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Water management improvements for agriculture by applying efficient crop schedules in the highland forest of Vilcabamba, Peru CIGR Journal
Meseth, Enrique; Yu, Jason C.S..
The current work is aimed to improve the water management for agriculture, by applying efficient crop schedules in Vilcabamba -and similar areas of the Andean highland forest-, which can satisfy most of the water requirements with rainfed irrigation and maximise the crops yield.  For this purpose, two field practices were carried out during the dry (September 2012) and wet season (February 2013) to measure rivers and canals flows with the velocity/area method.  Nineteen soil samples were collected on-site and analysed, presenting prevalent sandy loam and loam textures.  Cropwat programme and data on climate, crops and soil were used to estimate crop water requirements and scheme irrigation requirements, indicating that crop evapotranspiration is low due to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water management; Irrigation requirements Crop scheduling crop water requirements rainfed irrigation water management for agriculture Cropwat.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2750
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Water resources potentials of Hadejia River Sub-catchment of Komadugu Yobe River Basin in Nigeria CIGR Journal
A. Sobowale; Univesity of Agriculture, Abeokuta; J. K. Adewumi; University of Agriculture, Abeokuta; C. A. Okuofu; Ahmadu Bello University, Zaria; J. A. Otun; Ahmadu Bello Uniersity, Zaria.
A. Sobowale1, J. K. Adewumi1, J. A. Otun2, D. B. Adie2(1. Department of Agricultural Engineering, University of Agriculture, Abeokuta. Nigeria;2. Department of Water Resources Engineering, Ahmadu Bello University, Zaria. Nigeria)&nbsp;Abstract: A water audit of the Hadejia river sub-catchment of Komadugu Yobe River basin of Nigeria (KYB) has been carried out.&nbsp; The available water in this sub-catchment was compared with existing and potential water demands; results show that about 2,619 million cubic meters (MCM) of surface water is available annually upstream of Wudil (HS 1), 658 MCM is available between Wudil and Hadejia (HS 2), while 905 MCM is available between Hadejia and Gashua (HS 3).&nbsp; Analysis of direct ground water recharge...
Ano: 2010 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1065
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WATER STRESS MANAGEMENT FOR SUNFLOWER UNDER HEAVY SOIL CONDITIONS CIGR Journal
Mostafa, Harby; El-Ansary, Mohamed; Awad, Montaser; Husein, Nora.
An experiment was performed for two seasons to test the impact of water stress and drip irrigation lateral arrangements on yield and water productivity of the sunflower crop (seed and oil). Water stress treatments were Full crop evapotranspiration 100% ETc (FI100), 80% ETc (DI80), 60%ETc (DI60) and 100-60 % ETc (DI100-60). The DI100-60 treatment was applied as 100 % ETc up to seed formation then reduced to 60% ETc. The drip irrigation lateral arrangements were single planting row per one drip line with 2 L h-1 drippers (T1) and double planting rows per one drip line with 4 L h-1 drippers (T2). Results revealed that applying water stress by either DI80 or DI100-60 produced almost the same or more yield of sunflower seeds and oil than that obtained from full...
Tipo: Info:eu-repo/semantics/article
Ano: 2021 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6639
Registros recuperados: 1.391
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