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Project of grain silo
Pilař, Vlastimil ; Malach, František (referee) ; Malášek, Jiří (advisor)
The goal of the Master thesis is to design a grain container. The thesis involves a possible method of grain storage depending on the quality and condition of the grain and also the ways of filling and emptying the container with all the problems that might occur. The thesis deals for example with a possibility of occurrence of vault and with it associated change of state of stress, or with the pressure surges in the container. The thesis involves an analysis of an appropriate construction solution, a design of the main dimensions of the container and a test calculation of the container ´s strength.
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Influence of carbon dioxide elevated concentration on wheat flour quality
Drahovzalová, Kateřina ; Márová, Ivana (referee) ; Hrstka, Miroslav (advisor)
This thesis studied the influence of elevated carbon dioxide concentration on the properties of ears, grain and flour in two varieties of wheat (Triticum aestivum). The Vánek and Septima varieties were grown in special greenhouses, both in normal atmosphere with carbon dioxide concentration (AC = 385 ?mol?mol-1), and at elevated carbon dioxide concentration (EC = 700 ?mol?mol-1). Quantitative analysis of grain (the content of crude protein, starch, moisture and hardness of grain) was carried out using NIR, gluten content (gluten index) was determined after washing with water and gluten quality was expressed as falling number. Total crude protein content was determined according to Kjeldahl, total amino acids and amino acids content by ion exchange chromatography. Variety Vánek showed significantly larger size of the spikes, more grains and higher grain weight, when it was cultivated in the atmosphere of elevated CO2 concentration. For variety Septima, the size of AC and EC ear variants was comparable, but the ears of corn grown in the EC had a significantly greater number of grains and greater weight. Vánek variety grown in elevated CO2 concentration had lower weight of 100 grains, Septima variety grown in elevated CO2 concentration had greater weight of 100 grains. The varieties Vánek and Septima grown at elevated CO2 concentration showed significantly lower content of crude protein (28.4%) and gluten index (by 34.6%). In comparison with the AC variant, EC also showed lower overall content of crude protein and amino acids.
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The Efficient Application of Near Infrared Spectroscopy with Fourier Transformation for Prediction of Wheat Technological Parameters
Dvořáček, Václav ; Prohasková, Anna ; Štočková, Lenka
This method brings to the users basic information about principles and features of NIR spectroscopy as well as more detailed view of the state-of-the-art capabilities of NIR spectroscopy in wheat quality prediction. The agriculture professionals will use supportive information about possible utilization of the method including practical tips for proper NIR spectrometer selection. For both, the current and prospective users, the method provides practical guidance to device handling, management of calibration sets and calibration models development. The objective evaluation of the 21 predictive models based on FT-NIR measurement, covering the results of 14 reference analytical methods aimed at wheat quality. Furthermore, it offers information useful directly in breeding programs, mill and bakery production and also in agriculture sector, government control and at universities.
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Evaluation of storage protein profiles modifications in barley (\kur{Hordeum vulgare} L.) grains during malting procedure using gel electrophoresis
BINDER, Richard
This bachelor thesis is focused on evaluation of storage protein profiles modifications in barley (Hordeum vulgare L.) grains during malting procedure using gel electrophoresis. It has been analyzed three varieties of spring barley. One nonmalting variety Herris and two malting varieties Radegast and Sebastien. There are significant proteolysis changes during the malting procedure. Theese changes of storage proteins were captured and evaluated by gel electrophoresis (SDS-PAGE) on the basis of changes in the molecular weight in the different phases of malting procedure. Next observation which has been done was the measurement of the thousand grain weight (TGW) before and after the malting procedure. Theese results have been evaluated by statistic program.
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Effect of tillage minimalization technology to control weeds in cereal crops
STEJSKAL, Martin
This diplom thesis deals with the evaluation of quality machines work for soil cultivation used in minimalization soil cultivation technology and weed control in cereal crops. The machines were evaluated for incorporation of harvest residues, uniformity of depth and size of lumps. It was further performed an economic evaluation of selected cost per operation soil cultivation. In order to monitor the development of weeds was based small-plot experiment, where was monitored representation of individual weed species and the effectiveness of selected herbicide.
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Structure of bioproduction market in South Bohemia
HULANOVÁ, Monika
The intention of the diploma work was the choice of main sorts of bioproduction, charting of the structure of bioproduction in light of origin and detection of sold volume of chosen bio ? food stuff in the South Bohemia. The method - monitoring of the sale in terrain was chosen for charting of the structure of bioproduction. The bioproduction was found out in two types of markets ?markets and markets which are specialized for bio ? food stuff. In the South Bohemia there was chosen 15 markets and 15 markets which are specialized for bio ? food stuff. The structure of bio ? food stuff in light of origin (Czech/import) and in light of volume of sold production was found out in each market. The target bio ? food stuff were beef, grain, dairy products and fruit and vegetable. The data were found out from the packets of bio ? food stuff or through the interview with the chief of the market.
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The logistic chain of agricultural commodities
Daňhelová, Martina ; Zelený, Lubomír (advisor) ; Zeman, Karel (referee)
Diploma thesis "The logistic chain of agricultural commodities" is focused on the analysis of material flow in agricultural sector. Work assesses the benefits of storing commodities after harvest or sale of produce without adjustment from field. The study evaluates the economic and process performance in terms of processing of agricultural commodities after harvest from the beginning to final option trading. The obtained data will be possible to assess benefits of storing commodities. In the practical part is analyzed profitability of investment i post-harvest lines and sets out proposal to stremline the logistics chain of commodities within the company DAŇHEL AGRO a.s.
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