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The quality evaluation is one of the most important stages of the production processes. The same as regards the beer production and its components: hop, yeast, malting barley and other ingredients. Presented project deals with the complex quality evaluation of malting barley used for malt production. Its main goal is to elaborate complete methodology for the identification of varieties, the level...
The aim of this was to evaluate influence of different heat treatment conditions on microstructure and hardness of surface layer of cast iron elements. The molecular CO2 laser with 2600W output power and TEM01 mode was used to perform surface modification. An optical and scanning microscopes, Auger electron spectroscope, X-ray diffractometer, EDS microanalyser and hardness Vickers tester were used...
This paper presents a universal prototype testing device for determining the kinetic durability of products of pressure agglomeration (pellets and briquettes). The device presented in the paper is equipped with replaceable test chambers enabling to combine Pfost's and Holmen's methods for the determination of kinetic durability of pellets, and a method for the determination of kinetic durability of...
The study presents the results of research on the use of the production capacity of means of transport in the context of the farm owner's education. The availability of tractors per 100 ha of cultivated land clearly decreases with the growing level of education. A similar tendency is shown by the availability of means of transport in pieces per farm. In all designated groups of the level of education,...
The article presents tests of influence of speed of densification piston (50, 100, 150 mm/min) and size of densified particle (1, 1.5, and 2 mm) on the values of maximum densifying pressures and the density of pellets obtained from a mixture of shredded oat bran with a 20% addition of potato pulp. The tests were performed in an “open densification chamber - densification piston” working system, at...
This paper presents a simulation model of the farm tractor with a trailer. The aim of the study was the analysis of the effect of side wind gusts on agricultural trailer stability. Forces on roadway surface friction was taken into account. In the calculations different and varied weather conditions were assumed. Transport processes in agriculture affects the efficient functioning of farms. Results...
The article presents tests of the influence of the density of the mass flux of the densified material (5.29, 6.80, and 8.31 kg/m2•s) and the influence of the rotational speed of the matrix (280, 330, and 380 r•min-1) on the power consumption of the pellet mill and the quality of obtained pellets. The tests were carried out on a SS-2 stand with a working system of a pellet mill with a rotating matrix...
The aim of the study was to investigate the applicability of DMC control algorithm to control the temperature of potatoes in the storage. Principle of regulating the temperature of stored potatoes using the above algorithm, and simulations were performed. The obtained results were compared with the effects of currently used in the storage of potatoes control algorithms: the two-position and the PID...
Polycyclic aromatic hydrocarbons (PAHs) pose a real threat towards all elements of the ecosystem due to their toxic properties. One of the methods reducing PAHs from the environment is bioremediation, including bioaugmentation. Bioaugmentation consists in introducing microorganisms capable of effective recultivation ground into contaminated areas. This kind of microorganisms (microbial consortia),...
The article presents the results of prognostic simulation which refers to the momentary dose of liquid applied by the field sprayer without the automatic pressure control. The data registered at frequency of 1 Hz, related to the speed, the direction of movement and the position coordinates of the sprayer during the process of desiccation of the winter rape were used in the simulation. Based on the...
Project “Database system for supporting innovative methodology for pine protein genotyping” was aimed to create a system of representing information about the trees used in selective breeding carried out by Polish State Forests. Presented information includes data on general characteristics, such as geographic location and special features, such as genetic variation. The project is based on Microsoft...
The aim of this research was to evaluate an effect of surface layer condition of machine parts working in sand on abrasive wear intensity, and particularly comparison of two surface treatments - thermal spraying and laser alloying. The outmost disk coulters of ‘Poznaniak’ seeder were tested. Special laboratory tester called ‘rotated bowl’ used in wear research in sand was used. The research showed,...
The paper presents the results of comparative laboratory tests of three types of photoelectric sensors used for the control of seed sowing. The study aimed to determine the grain counting errors in terms of uneven dosing of wheat grain that occurs in row drills and single seeders in repeated sowing process. Grains were administered one by one at regular intervals and also in double or triple passes...
The article presents a new version of a modified loading transporter unit in a specialized tracked vehicle, made as part of the development project no. WND-POIG.01.03.01-00-164/09:“An integrated technology for the protection of wetlands against succession of vegetation causing a degradation of the natural environment” associated with the removal of unwanted vegetation from protected areas, particularly...
The aim of this paper was to design and build (construction and instrumentation) a stand for testing the processes of pelleting and briquetting of plant materials of agricultural and food origin. A prototype pelleting and briquetting device was the main element of the stand Its instrumentation in control and measuring equipment allows to densify different mixtures of plant materials, including waste...
The paper presents the results of the computer analysis of strength of insulated body. Mathematical model was described. The analysis included the development of load characteristics based on exploitation conditions. Based on construction data computational models of the analyzed construction were developed. Their simulation tests and result analysis carried information about stress distribution in...
The article presents one of the methods of construction verification connected with a designing process of the tilling-and-sowing combined machine. In the developed seeder a mechatronic control system was used which allows to increase the working speed and to increase the accuracy of sowing. Construction of the machine was elaborated and then its strength was analyzed. The calculations showed the...
Progressing from the eighteenth century industrial development, transport and urban areas expansion contribute to the accumulation of polycyclic aromatic hydrocarbons (PAHs) in different components of the environment and their deposition into soils. Due to the established, highly adverse PAHs effects on living organisms, there is a tendency to develop effective remediation technologies which can result...
The basic aim of this paper is an attempt to examine the phenomenon of qualitative differentiation, including the answer whether the improvement of product quality through an increase in its durability, is an appropriate, at the present times, way how to build a market advantage by the manufacturer of agricultural machinery, including manure spreaders. As part of the study, attempts to answer the...
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