This thesis presents results from testing of interlocking compressed earth block (CEB) masonry shear walls. CEBs are low strength earth masonry units sometimes stabilized with cement or lime. The interlocking compressed earth blocks (ICEBs) used in this experiment are dry stacked interlocking hollow units, which can be reinforced and grouted after they are laid. Although significant research has been undertaken to optimize the material properties of CEBs, little has been done to investigate the performance of structural systems currently being built using this technology. Test results are reported for three 1800 mm x 1800 mm wall specimens constructed with cement stabilized ICEBs and subjected to cyclic in-plane lateral loading. Wall specifications were varied to identify the shear performance of partial and fully grouted walls, and to observe the performance of a flexure dominated wall panel. It was determined that the shear strength of fully grouted walls is significantly higher than that of partially grouted walls and calculation of capacity based on current ACI 530-08 masonry provisions significantly overestimates the shear strength of ICEB wall panels. Based on the observed performance, recommendations are made for limiting the calculated nominal shear strength in design. Results also indicate that calculations based on simple bending theory conservatively predict the flexural strength of a fully grouted ICEB wall. Discussion of ICEB material properties and recommendations for design and construction procedures are included.

Thesis (M.Sc. Agriculture (Pasture Science)) -- University of Limpopo, 2021 / Finger millet (Eleusine coracana) is believed to be adapted to the arid and semi-arid regions, highly tolerant to pests, diseases and drought. It has the potential to produce a high forage biomass with fewer inputs under good production practices. The aim of the study was to evaluate the potential of finger millet as a fodder crop on the Pietersburg Plateau under rainfed and irrigation conditions, planted in rows and broadcast. The study was conducted for two consecutive seasons (2017 and 2018) at the Syferkuil Experimental Farm (SEF), University of Limpopo. Treatments consisted of two watering treatments (irrigation and rainfed) and two planting methods (broadcast and row planting). Seeding rate was 10 kg ha-1 with the inter row spacing of 25 cm. Irrigation had a significant effect on the dry matter production of finger millet (P ≤ 0.05). During 2017 growing season, under rainfed condition, the crop experienced zero production due to low rainfall. The total dry matter production of finger millet under rainfed conditions in 2018 was 3371 kg ha-1 for row planting and 3770 kg ha-1 for broadcasting. The dry matter production of finger millet under irrigation and row planting was 5318 kg ha-1 compared to 3371 kg ha-1 produced under row planting in the rainfed conditions. Broadcasting under irrigation produced 4890 kg ha-1 whereas broadcasting under rainfed conditions yielded 3770 kg ha-1. Planting method had no significant effect on the dry matter production of finger millet (P ≤ 0.05). The total dry matter production in 2017 was 5668 kg ha-1 and 5122 kg ha 1 under row planting and broadcast respectively, 2018 season produced the total dry matter production of 5122 kg ha-1 under row planting and 4892 kg ha-1 under broadcast. Finger millet planted under rainfed in rows had the CP% of 14.76 and 16.87% when broadcasted. In all the treatments CP% was higher than 10%. The ADF% was 33.02% under rainfed conditions and it ranged between 30.99% and 31.53% in 2017 and 2018 for row planting under irrigation. Finger millet can be considered an alternative fodder crop for livestock farmers in the Pietersburg Plateau

This work deals with the addition of carbon dioxide to milk for cheese production. The first aim was to elaborate a literary search focused on chemical composition of milk and its changes after addition of carbon dioxide and to describe production processes, with or without addition of carbon dioxide. The opening part was in particular focused on production of cheese with carbon dioxide and what all this gas causes during production. Carbon dioxide significantly decreases pH, thereby preventing from multiplication of undesirable microorganisms, it is also very important for shortening of production time, because it shortens the coagulation time. The main aim of experimental part was to determine the optimum addition of carbon dioxide to milk for production of Balkan cheese and using several analytical methods to compare cheese produced with and without addition of carbon dioxide. The sensory methods suitable for following of sensory differences of produced cheeses were also chosen and applied. By request of Dairy in Polná Ltd., the operation economy was calculated, which revealed that production with carbon dioxide is very useful and can reduce production costs of Balkan cheese, which would certainly be positive. The advantages and disadvantages of cheese production with carbon dioxide for consumers as well as for producer are evaluated as conclusion of this work.

This work deals with the study of limestone and corundum dry milling using attritor-type stirred mill in a batch mode. There were stearin and polyethylene glycol used as surfactants and spherical shaped steel grinding elements used for the experimental part of the work. The main idea was to examine behavior of the selected grinding stock type within a long-term grinding forces exposure in selected conditions of ultrafine dry milling leading up to the submicron area. Characterization of samples was performed by laser granulometry, X-ray powder diffraction analysis, flame atomic absorption spectroscopy, objective color determination and electrokinetic potential measurement. Experimetaly measured data implies that in all cases there was a re-agglomeration of the grinding stock particles occurring, although in different stages of the disintegration process and in mutually various degree. The analysis results denote that a larger erosion of the crystal structures with the associated increase of the amorphous phase in the submicron particle size took place in the grinding stock.

This thesis deals with the addition of flood protection measures in the Salašský potok basin. Working closely related to the previous bachelor thesis on Flood protection in the Salašský potok basin. Detail deal with left tributary Salašky - Modranský potok -which runs through the town Modrá, to be occupied by 6 small cascade of water reservoirs. The work is divided into two parts. The first part describes the actual parameters of the tanks and their assessment of the possible spill-over and is solved their overall transformational effect in the basin. In the second part of the thesis dealt with the tank as a semi tank in response to N-leté water and searched their design parameters.

This thesis deals with problematic of external area water in river basins and its negative impact on the urban areas. The work is divided into two parts. The first part is describes the possibilities of technical interventions in river basins, which can affect the hydrologic conditions in those basins. First part also describes the possibilities of transformation by particular types of draining facilities. Second part of the thesis consists of an analysis of the situation in the village Račice and proposition of hydrotechnological solution for this village.

This thesis concerns with control calculation of steam boiler. The work is divided into several parts. In the individual parts are executed stechiometry calculations, the enthalpy of flue gas and power of the heat exchange surfaces. Based on the results it is proposed location of the SCR.

Research was curried out on the perovskite systems with general formula A1-xA‘xB1-yB‘yO3± (where A=La, Sm, A´=Ca, B´=Al, B=Co,Fe,Mn and Cr). Perovskite oxides were sythesized by polymerisation methods and characterised by RTG analysis, BET method, SEM and EDX. TPD spectra and catalyst testing were measured in high temperature plug flow reactor and products were analysed by mass spectrometry. It was found, that metane oxidation at ratio O2/CH40,5 depended on the temperature. Total oxidation proceeded at the temperature betwen 300-700oC to the carbon dioxide and water, while the partial oxidation of metane (POM) occured at above 700oC to the hydrogen and carbon oxid (syngas). This was ascribed by equilibrium of O2 betwen gas phase and solid perovskite. There was used 12 perovskite systems, which catalysed methane oxidation by the same way. Dry reforming of methane run above temperature 700oC. Cobaltite and ferite type perovskites were found as the most active catalytic systems. On the base of obtained results the Mars van Krevelen mechanism was established for explanation of oxidation and reformation of methane by perovskite systems. It was showed, that POM was running by two steps mechanism. Products of total oxidation was occured in the first step, which were passed over to the syngas (H2+CO) in the second step.

The aim of the diploma thesis was to choose poper parameters for a quick and simple characterization of animal feed, to verify working procedures and to apply these on chosen samples. Within the scope of this work, samples of animal dog feed produced in a private company „Adamkovy tlacenky“ were analyzed. The feed is in the form of brawn, stored in artificial casing; it consists of up to 80% of animal components and up to 20% of vegetable components, while the rest of the weight is the pork gelatine. The feed does not contain preservatives, colourings as well as any other chemically produced additives. For the analysis three formulas were chosen: "Hovězinka", "Kuřátko" and "Srdcovka", the composition of which is protected by the patent. The choice was made to include samples of different composition. The content of raw crude protein, fat, fibre, dry basis, and ash was determined. The obtained values were compared with the standards for feed normally utilized by the feed industry. The results will be used to improve the formulas and to develop new types of feed.

This diploma thesis is focused on risk analysis of dry dog food range of products sold in a retail chain named Zvěrokruh. The main goal of this work is creation of model with use of the fuzzy logic. The model helps with the dry dog food range risk evaluation. The model is created in MS Excel and MATLAB. Outcome of this work is a tool which evaluate quality of the dry dog food, which can be afterwards analysed in other point of view.