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	Provedor de dados CIGR Journal (70) Autor AVIARA, NDUBISI A. (3) Owolarafe, Oseni Kehinde (3) Adeyemi, Nabeel A (2) Aramide, Basiru Philip (2) Aremu, Ademola K. (2) Belfiore, Nicola Pio (2) Boxberger, Josef (2) Iyilade, Idowu J. (2) Jayasuriya, Hemantha P. W. (2) Mayrhofer, Hannes (2) Oyeniyi, Samuel K. (2) Quendler, Elisabeth (2) Saha, Chayan Kumer (2) Servadio, Pieranna (2) Abarikwu, Okezie Ibeji (1) Abdulkabir Mobolaji Ibrahim; University of Ilorin, Ilorin, Nigeria (1) Abdullahi, Hussein Itopa (1) Abegunrin, Toyin Peter (1) Achibase, Sebastian (1) Addo, Ahmad (1) Mais... Palavra-chave Agricultural Engineering (70) Moisture content (4) Post harvest Technology (3) Bioenergy (2) Efficiency (2) Incident (2) Irvingia gabonensis (2) Prevention (2) Tyres (2) Wood products (2) (1) Accident Prevention Agricultural machinery (1) Accident Prevention agricultural machinery (1) Agricultural Buildings and Bioenvironmental Engineering green building (1) Agricultural Processing (1) Agricultural Processing Aloe vera barbadensis gel extraction viscosity temperature (1) Agricultural Structures Greenhouse Technology modelling radiation exchange greenhouse surface sky (1) Agricultural buildings (1) Agricultural machinery (1) Agricultural mechanization Repair and maintenance costs (1) Mais... Tipo do documento Info:eu-repo/semantics/article (65) Ano 2021 (1) 2019 (11) 2018 (8) 2017 (3) 2016 (13) 2015 (10) 2014 (9) 2013 (13) 2012 (2) Mais... País China (70) Idioma Inglês (70)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 70 Primeira ... 1 2 3 4 ... Última Design steps of narrow tillage tools for draught reduction and increased soil disruption – a review CIGR Journal Odey, Simon Ogbeche. Design steps of narrow tillage tools for draught reduction and increased soil disruption was reviewed. Narrow tillage tools are the main components of conservation tillage and soil compaction alleviation equipment. Literature regarding dynamic behaviour and step-by-step design of narrow tillage tools is scarce. A better understanding of soil dynamic behaviour and designing steps will help in the design of new tool shapes which will reduce tool draught, energy demand and increased soil disruption over a wide speed range. At the same time, narrow tools disturb less soil, ideally only the minimum necessary to establish a crop. Narrow tillage tools such as subsoilers have gain much ground in their application for alleviating soil compaction; and are attracting... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Farm Power and Machinery; Processing and Storage Engineering design; Draughts; Soil disruption; Subsoiler shanks. Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3511 Operational performance of crop residue cutting discs in the no-tillage system CIGR Journal Becker, Rafael Sobroza; Alonço, Airton dos Santos; Francetto, Tiago Rodrigo; Carpes, Dauto Pivetta; Zart, Bruno Christiano Correa Ruiz; Moreira, Antonio Robson. The objective of this study was to evaluate the operating performance of crop residue cutting discs with distinct cutting edges in the no-tillage system, in relation to the travel speed of the tractor/tool holder set. The experiment was carried out in an experimental area, the soil classified as Paleudalf. The experiment consisted in a factorial arrangement of 4x4, totaling 16 combinations of treatments and three replications, composed by the interaction of the factors: crop residue cutting discs (plain flat disc, wavy disc, rippled disc, and helical wavy disc coulter) and travel speed (1.11; 1.67; 2.22 and 2.78 m s-1). It was used a mobile tool holder structure for the coupling of the active organs, which was pulled by a farm tractor. For the collection... Tipo: Info:eu-repo/semantics/article Palavras-chave: Field trial; Agricultural machinery; Machine-soil ratio; Planter; Agricultural Engineering. Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5116 Relatiohship between Reference Evapotranspiration and some Climatic Parameters for Umudike, Nigeria. CIGR Journal Abarikwu, Okezie Ibeji. Reference evapotranspiration, ETo, is important as it is used to determine the evaporative demand of the atmosphere. there is a need for continued studies to determine the reference evepotranspiration of different locations as well as its relationship with various climatic parameters for the prediction of water demands for human and ecological reasons. A study undertaken to determine the relationship between ETo, obtained using the Food and Agriculture Organization of United Nations, Penman-Monteith (FAO-56 PM) method, and some climatic data in Umudike, Nigerian environment are presented. The climatic parameters considered are solar radiation, sunshine hours and wind speed. The interactions of climatic parameters in the input variables of the ETo model,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Soil and Water Reference Evapotranspiration Climate Solar Radiation Sunshine Hours Wind Speed. Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5074 Design Modification of Conventional Wheat Straw Chopper CIGR Journal Ghafoor, Abdul. Agriculture has straight and indirect contribution to boost the economy of Pakistan. Wheat and paddy are among the major rotational crops of Pakistan. The straw management in combine harvested in wheat fields is a major problem. In the past the residual wheat straw in convectional harvesting was burnt in the field which resulted losses of 80% of Nitrogen, 25% P, 21% K and 4-60% S. To overcome this problem, locally available wheat straw chopper is used for cutting and collecting the wheat straw left behind the combine harvesters. These locally developed wheat straw choppers are heavy in weight having lower machine efficiency. A wheat straw chopper has been modified using locally available materials making it light weight and more efficient. The performance... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Farm Machinery and Power Wheat variety wheat straw chopper straw yield field efficiency. Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3031 Comparative evaluation of the performance of motorized and pole and Knife oil palm fruit bunch harvester CIGR Journal Aramide, Basiru Philip; Owolarafe, Oseni Kehinde; Adeyemi, Nabeel A. In this study the performance of a motorized palm fruit bunch harvester (MBH) was evaluated in comparison with the bamboo-pole-and-knife harvester (BPK). The MBH was first tested on Nigerian plantations for the palm trees it could reach. The average time taken to harvest a bunch and the time taken per hectare of plantation were determined. The best orientation and the cutting angle for the harvester were also determined. The exact height which the harvester could reach was also determined on the plantations. The harvester was later used in comparison with (BPK) method on palms of moderate height and the average time of harvest per bunch, field capacity, as well as cost of operation was determined for the two methods. Time study (TS) of the two methods was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Farm Machenery and Processing oil palm harvesting; Motorized-harvester; ; Pole-and-knife; Efficiency. Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3347 Effects of Different Cooling Systems on Heat Stress and Behaviour of Dairy Cows CIGR Journal D'Emilio, Alessandro; Cascone, Giovanni; Lanteri, Paolo; Porto, Simona M.C.. This paper shows the results of a research study aimed at investigating the effects of a sprinkler system coupled with forced ventilation on the heat stress and the behaviour of dairy cows bred in a free stall barn without paddock.To this aim, an experiment was carried out inside a free-stall dairy house equipped with two different cooling systems: a fogging system associated with forced ventilation in the resting area and a sprinkler system associated with forced ventilation in the feeding alley. The trial regarded two adjacent pens and the experimental protocol required that the treatment group was housed in one pen where the two cooling systems were always activated following an established timetable, whereas the control group was housed in the adjacent... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering. Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4784 ASSESMENT OF PALM KERNEL SHELL AS A COMPOSITE AGGREGATE IN CONCRETE CIGR Journal Oti, Okechukwu Peter; Nwaigwe, Kevin Nnanye; Okereke, Ngozi A. A.. This  manuscript  presents  a report on  the  physical properties of palm kernel shell used  here  as a coarse aggregate  and  their  effect  on the strength properties of palm kernel shell concrete.Laboratory research was carried out to observe the effects of replacing crushed granite with palm kernel shell on the compressive strength and density of palm kernel shell concrete. Mix design of 1:2:4 and a water-cement ratio of 0.6 were used to produce concrete specimen cubes of size 150mm3.A total of 60 cubes were made and wholly submerged in water to cure for 28days at intervals of 7days i.e. 7, 14, 21 and 28 days after which their densities and compressive strengths were determined. Granite was replaced with palm kernel shell in the mix at 25% interval... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Construction Palm kernel shells; Coarse aggregate; Curing; Physical properties; Compressive strength. Ano: 2017 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4036 Performance Evaluation of a Hand pump with Provision of a Sealed Secondary Water Sump CIGR Journal Sarkar, Amaresh; Jha, Madan Kumar. Nowadays, a large number of water lifting devices and pumps are available for lifting water or other liquids from lower elevation to higher elevation. However, none of these hand pumps use a secondary water sump or any other such kind of device which increases efficiency of commonly used hand pumps. Also, measurement of operating forces for the performance evaluation of hand pumps is often missing. In this study, a commonly used hand pump was fitted with a 54-liter capacity sealed secondary water sump. The secondary water sump is again linked with the shallow well water or aquifer water. It was estimated that the provision of secondary water sump fitted with a hand pump results in significant reduction in the input power. The performance on a hand pump... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Groundwater lifting system Hand pump; Secondary water sump; Pump efficiency. Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3049 Effect of two-axle and three-axle sugarbeet tanker harvester on selected soil-physical properties in dry and wet soil conditions CIGR Journal Moitzi, Gerhard; Amon, Stefan; Klik, Andreas; Schwen, Andreas. The effects of two-axle and three-axle sugarbeet harvester under dry (gravimetric soil water content 20%) and wet (gravimentric soil water content 30%) soil conditions on bulk density, soil penetration resistance and saturated hydraulic conductivity were determined in a long-term non-ploughed field with a silty loam soil in the Pannonian region of Austria. The tyre-inflation pressure of the sugarbeet harvester was set to 140 kPa in the front axle and 190 kPa in the middle and rear axles. The total weight of the three-axle harvester was distributed equally with about 20 Mg each axle. Two-axle harvester distributed the total weight of 49.1 Mg to the rear axle with 27.3 Mg and to the front axle with 21.8 Mg.The differences of bulk density (10-15 cm, 25-30 cm,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Soil Science sugarbeet tanker harvester; Soil moisture conditions; Bulk density; Soil penetration resistance; Saturated hydraulic conductivity. Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5083 APPLE IDENTIFICATION IN FIELD ENVIRONMENT WITH OVER THE ROW MACHINE VISION SYSTEM CIGR Journal Silwal, Abhisesh; Gongal, Aleana; Karkee, Manoj. Accurate detection and identification of fruits is critically important for the success of developing automated apple harvesting system. Research has been conducted to identify apples in orchard environment with reasonable accuracy when apples are clearly visible or partially occluded. However, only limited work has been carried out to identify fruit in clusters, which is critically important as fruit clusters are common in field conditions. This work focused on accurately identifying partially visible apples and apples in clusters using a machine vision system. An over the row platform with tunnel structure and artificial lighting was used to increase uniformity in imaging environment. Iterative Circular Hough Transform (CHT) was used to detect clearly... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Mechanization and Automation apple identification; Clustering; Circular Hough Transform; Blob analysis. Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3006 Fracture Resistance of Kola Nut (Cola nitida) CIGR Journal Owolarafe, Oseni Kehinde; Kareem, Ibrahim; Ajayi, Omolayo Ademola. Fracture Resistance of Kola Nut (Cola nitida) AbstractIn order to design appropriate processing machineries, the knowledge of the force and deformation curve of agricultural materials is very important. In this research, fracture resistance of kolanut (cola nitida) was measured in terms of the rupture force, compressive stress, modulus of elasticity and energy absorbed. Kolanuts were quasi – statically loaded in horizontal and vertical orientations with moisture content at four levels (47.59 -61.41%) and loading rate of 5mm/min. The result showed that the compressive load decreased from 458.95 to 334.41 N and 605.46 to 228.10 N, compressive stress decreased from 0.40 to 0.30 MPa and 0.52 to 0.20 MPa and energy absorbed decreased from 3.46 to 1.81 J and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Postharvest Engineering; Properties of Agricultural materials kolanut; Moisture-content; Loading- orientation; Fracture- resistance. Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4895 Influence of tyres characteristics and travelling speed on ride vibrations of a modern medium powered tractor Part II, Evaluation of the Health Risk CIGR Journal Servadio, Pieranna; Belfiore, Nicola Pio. In this paper, according to ISO 2631/1, 1997, the influence of the mechanical vibrations on human health is evaluated and assessed with four methods: the health guidance caution zones (HGCZ), the estimated vibration dose value (eVDV), the fourth power vibration dose value (VDV), a combination of various methods presented in literature.  The normative refers to the HGCZ, which involves the average RMS vibration emission level and its exposure time during a given working day.  Values of crest factor for the operator seat showed that Z-axis was the more solicited, even if all the crest factor values are below 9.  Results of mechanical vibration in respect of comfort and health, according with the method of the HGCZ, showed that only case B, at higher forward... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Tractors; Vibrations; Ergonimics whole body vibration; Tractor; Comfort; Health risk; Tyres. Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2544 Agricultural Engineering Profession; The Perspective of Employers of Labour in Ilorin, Nigeria CIGR Journal Oyebode, Oyetayo Olukorede; Ogunlela, Ayodele Olarewaju. An appraisal was carried out on the level of awareness of the Agricultural Engineering profession by employers of labour in Ilorin, Nigeria, to evaluate who they (employers of labour) think an Agricultural Engineer is, how relevant they think he is to their organizations and how well they have been able to make use of his (Agricultural Engineer’s) expertise in their respective organizations. This was done using structured questionnaires and personal communication. The questionnaires were distributed to the target groups and persons (these include Research Institutes, Production and Manufacturing Industries, Government Ministries, Agencies and Parastatals). The results showed that 79.8% of the respondents were of the opinion that Agricultural Engineers can... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Profession; Employers of Labour; Ilorin. Ano: 2021 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5362 Prioritization of watersheds using multi-criteria evaluation through fuzzy analytical hierarchy process CIGR Journal Prajakta Aher; Research Scholar; J. Adinarayana; Associate Professor; S. D. Gorantiwar; Professor. Conservation of available natural resources through demarcation of potential zones at micro level are primary necessitate for sustainable development, particularly in the fragile semi-arid tropics.  Delineation of potential zones for implementation of conservation measures above the entire watershed at similar occurrence is inaccessible as well as uneconomical; consequently it is a prerequisite to apply viable technique for prioritization of sub-watersheds (SWDs).  Keeping this in view, the present research attempted to study various morphological characteristics and to implement Geographical Information System (GIS) and Multi Criteria Decision Making (MCDM) through Fuzzy Analytical Hierarchy Process (FAHP) techniques for identification of critical... Palavras-chave: Agricultural Engineering; Land and Water Engineering Fuzzy Analytical Hierarchy Process Geographic Information System Multiple Criteria Decision Making Watershed prioritization Conservation management. Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2282 Influence of tyres characteristics and travelling speed on ride vibrations of a modern medium powered tractor Part I: Analysis of the driving seat vibration CIGR Journal Servadio, Pieranna; Belfiore, Nicola Pio. In the present investigation a contribution is offered in order to improve the knowledge of the influence of both speed and tyre type on a medium power tractor vibrations.  The vibrations transmitted from the ground to the driver’s seat of a ballasted wheeled tractor of medium power, equipped with a front suspension axle and a suspended cab, have been measured and analyzed.  Two different tyres, namely, types A and B, at two different forward speeds, 11.1 and 13.9 m s-1, have been experimentally tested, during the simulation of the front agricultural implements transportation on a rectilinear plane tract of a conglomerate bituminous closed track.  This work has been done by applying standards recommended by ISO 2631/1, 1997.  Results were obtained on the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Ergonomics tractors; High speed; Whole body vibrations; Tyres. Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2543 Fuel consumption of some tractor models for ploughing operations in the sandy-loam soil of Nigeria at various speeds and ploughing depths CIGR Journal Adewoyin, Adewale Olaniyi; Ajav, Emmanuel Atoo. Tractors acquired in Oyo State-Nigeria are primarily utilized for ploughing operations which represents the most costly single item in the budget of an arable farmer.  Tractor fuel consumption constitutes a significant parameter that affects tractors performances for ploughing operations.  The effect of ploughing speed and depth on tractors fuel consumption was therefore examined in a bid to establish their optimum operating conditions.  The soil characteristics of the study site were determined using laboratory tests.  Ploughing operations, using ASABE standard D497.5, were carried out on 100×500 m research farmland using Massey Ferguson (MF 435, 100 hp), Fiat (F130D, 100 hp) and Steyr(CVT170, 100 hp) tractors that were purchased in 2009.  Field... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Farm Power and Machinery Tractor performance; Soil types; Ploughing depth; Ploughing speed; Fuel consumption. Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2466 Comparison of five commonly used thin-layer moisture transfer models in fitting the re-wetting data of barley CIGR Journal Basunia, Mohammad Ali. Five commonly cited thin-layer rewetting models, including Page, Diffusion, Approximate form of diffusion, Exponential, and Polynomial were compared for their abilities to the fit the experimental re-wetting data of barley based on the root mean square error (RMSE) and mean relative error (MRE) of estimate of the measured and simulated moisture contents.  The comparison shows the Page model is the most suitable model (average, RMSE = 0.176% d.b. and MRE = 0.713% d.b.) followed by the Diffusion model (average RMSE = 0.199% d.b. and MRE = 0.862% d.b) to fit the re-wetting experimental data of barley.  The Approximate form of diffusion, the Exponential and the Polynomial models have less fitting ability then the Page and Diffusion models for the entire period... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Post harvest technology Thin-layer; Barley; Re-wetting parameters; Temperature; Relative humidity. Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2539 Some physical properties of acha as affected by moisture content CIGR Journal Satimehin, Adesola Adebanjo; Philip, Theresa K.. Mechanization of acha processing has been limited by dearth of data on engineering properties to aid design of equipment for its postharvest operation. Therefore, this study was undertaken to determine the particle size, bulk density and porosity of acha as influenced by moisture content. Particle size was determined by the method of sieve analysis.  The fineness modulus obtained from the analysis was used in calculating the average particle size of acha grains.  Bulk density was determined from the mass of a known volume of samples, while a porosity measuring apparatus was used for measuring the porosity of acha grains at four levels of moisture content and five levels of bulk density.  The results showed that acha grains increased in size from 1.745 mm... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Post harvest process engineering Acha physical properties moisture content bulk density. Ano: 2012 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2188 Performance of lugged cage wheel for wetland cultivation CIGR Journal Kumar, Arvind; Baruah, D.C.. Rice is a major food grain crop grown in North-eastern Himalayan region of India with varying level of mechanization. Rice field remains wet and loose for a considerable period of growing season. Land preparation of rice field is one of the critical operations both in terms of timeliness and energy requirement. The losses up to 70%-80% of input power are reported while negotiating wetland terrain by tractors or power tillers, particularly in difficult terrain. This paper described the attempts made to address the issue of wetland traction primarily relevant to mechanization of rice cultivation in North-eastern Himalayan region of India. There is a variety of design of cage wheels used on power tillers with varying levels of performances based on the soil... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Farm Machinery and Power split lug; Cage wheel; Wetland cultivation; Wheel slip; Field capacity. Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3819 Design and performance evaluation of centrifugal cashew nut sheller CIGR Journal KILANKO, Oluwaseun. Cashew nut centrifugal shelling machine was designed and constructed. Shelling efficiency and whole kernel recovery was evaluated for hot-oil roasted nuts on the machine. The design was based on the principle of the optimum kinetic energy that could break the cashew nut shell. The deformation energy used was 4.8763 Joules. The angular velocity of the impeller calculated from the energy was 376.12 rad/s which was equal 3592 rpm. The motor power used was more than 917.34 Watts, the minimum power requirement. The prototype of cashew nut sheller was constructed and evaluated for its shelling efficiency and whole kernel recovery using three levels of moisture content (7.00%w.b., 8.46%w.b. and 9.83% w.b.), three levels of impeller speeds and three grades (large,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Mechanical Engineering cashew nut; Moisture content; Nut size; Speed; Hot-oil roasting; Shelling efficiency; Whole kernels. Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4203 Registros recuperados: 70 Primeira ... 1 2 3 4 ... Última

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