Browsing Vol. 2012. by Title
Now showing items 1-20 of 21
-
3D Discrete Element Model to Describe the Draft Force and the Influences of the Tool Geometry
Virtual DEM models were developed in correspondence with the real tests. In this article we will introduce the methods of how DEM approach was used in developing a model for the prediction of draught force on cultivator ... -
Analysis of Economic Indicators for GPS Technologies Application in Agricultural Corporation Belgrade (PKB)
This paper examined the level of savings in the application of modern technical systems for satellite guidance and control over performing agricultural operations throughout the season. The exemplary property was Agricultural ... -
A Chaotic Profit Growth Model in the Agricultural Machines Production
The basic aim of this paper is to provide a relatively simple profit growth model in the agricultural machines production that is capable of generating stable equilibria, cycles, or chaos. A key hypothesis of this work ... -
Distribution of Airborne Dust Particles in a Tied-Cows Barn
Among others, an airborne dust particles concentration is a crucial microclimate quality parameter of each livestock building. Increasing the concentration of dust particles affects the indoor air quality and health of ... -
Effects of Irrigation on Yield and Composition of Principal Elements of Nutrients in Maize-Growing Soil
Extensive organic production under irrigation conditions requires greater amounts of NPK fertilisers. Furthermore, the mobility of fertilisers, especially of nitrogen, is greater under the increased soil moisture content, ... -
Energy Potential of Products of Fruit and Grape Plantations Pruning in Serbia
Modern technologies of the fruit and wine production include implementation of the intensive plantation pruning where the accumulated considerable amounts of plant biomass residue have significant environmental and energy ... -
Experimental Investigation on Accumulation of Heat by Phase Change Material in the Thermal Energy Storage
The paper includes a general discussion of reasons for the application of heat storage and phase change material as storage medium. A part of experimental results obtained by measuring during the process of paraffin phase ... -
Factors Affecting the Mechanization of Plant Production in Hungary
The natural and climatic conditions of Hungary are extremely suitable for agricultural production and producing raw materials. As a result of the historical conditions and the continuous changing of the structure of the ... -
GIS-Based Analysis of the Production of Biomass and Its Use for Composting in the Czech Republic
At present, various information systems including a sub-group of geographical information systems (GIS) are increasingly used in waste management (similarly as in other fields). Data are gradually standardized so that all ... -
Long Term Effects of the Application of Ameliorative Tillage Systems on Heavy Mechanical Composition Soils in Crop Production
There are around 400,000 hectares of soils with heavy mechanical composition, and the greatest part of the production area is under crops. The long term soil tillage by conventional methods (using plough) and a large number ... -
Optimization and Research of Technological Parameters of Shut-Off Device of Biomethane Gas-Filling System
The paper gives overview of working principles, modeling and testing results of new patented shut-off device. This invention is created by co-founder of Hygen Ltd. and relies to another invention of this company, which is ... -
Optimization of Hydraulic Lifting System in IMR Tractors
Purpose of hydraulics lifting system in tractor is to obtain continuity in control of functioning with certain special tools which implements plow, i.e. should at least regulate the operation of the plow by„ position”, by ... -
Research of Seeding Distance Uniformity by Response Surface Methodology
The subject of this paper is to optimize the uniformity seeding distances using response surface methodology and validated optimal level variables. Variables are modeled as a vacuum on the seed plate, diameter planting ... -
Respiration Rate Models of Fresh Chickpea Sprouts (Cicer Arietinum L.) under Modified Atmosphere Packaging
The closed system glass container headspace gaseous composition, in terms of O2 and CO2 concentrations, in modified atmosphere packaging (MAP) of Chickpea Sprouts (Cicer arietinum L.) at 5, 10, 15, 20 and 25oC temperature ... -
Results of the Investigation Effects of Soil Compaction on Yield of Winter Wheat
Moving of tractors and mobile systems can be divided in two groups: moving trough the inner parts of fields, and through the headlands. On headlands, soil compressing is more intensive due to lower moving speeds while ... -
The Selected Problems of the Study on the Quality of Mineral Fertilizer Sowing with Disc Spreaders
The aim of this study was the influence of working parameters of mineral fertilizer on quality of sowing. The application of fertilizers is conducted with a particular accuracy, mainly characterized by a variation coefficient ... -
Stator and Rotor Power of the Doubly-Fed Asynchronous Generator Applied in Wind Power Plants
Due to the stochastic nature of the wind, doubly-fed asynchronous generator can be used effectively in the process of transforming wind energy into electrical energy, especially for the case of higher power. A special ... -
Technical Parameters and Fan Sprayer Quality of Vineyards
The technique of pesticide applications in viticulture, in most cases is characterized by dispersion method using air mistblowers fan. Application of this procedure essentially contributes to the quality of care and ... -
Technological Parameters of Briquetting of Miscanthus Biomass
In this paper, the specific characteristics of Miscanthus straw briquetting process are presented, as well as the problems and difficulties that may be expected in the processing of this new and potentially profitable ... -
Types, Clasification and Selection of Dryers in Agroindustry
Drying is one of the basic food processing operations in agro-industry that requires a great amount of energy for food conservation process. The large number of researchers in the domain of natural and technical sciences ...