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Development of environmental friendly materials
Peterková, Jitka ; ,, Milan Machatka, (referee) ; Plachý, Jan (referee) ; Šťastník, Stanislav (referee) ; Zach, Jiří (advisor)
Increasing demand for new progressive construction materials requires development of modern environmentally friendly materials with excellent end-use properties and reasonable price. One of the main objectives of material research in building industry is using renewable resources of raw materials of industrial waste for development of new construction materials. Current trend of thermal insulation of building constructions results in development of environmentally friendly insulation materials based on renewable material resources from agriculture and stock farming, which could became alternative for current common use insulation materials in the future. The thesis describes research and development of insulation materials based on natural fibres of agricultural origin; in particular fibres of hemp, flax and jute. Hydrothermal behavior of developed materials is studied including computational simulation of behavior of researched materials after building in the construction.
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Pultrusion process of composite based on natural fibres
Letavaj, Emil ; Bábík, Adam (referee) ; Přikryl, Radek (advisor)
The theoretical part of bachelor thesis is focused on general overview of composite materials, natural fibers and their various modifications. The practical part is based on chemical treatment of flax fibers by two types of silanes, in order to optimize the interface between the phases in the composite material. Such modified fibers were applied to produce composites by pultrusion technological process. In conclusion, the impact of chemical treatment of flax fibers was reviewed on the mechanical properties of the resulting composite profiles.
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Cultivation of hemp Cannabis sativa L. for biogas production: methodology for practice
Honzík, Roman ; Bjelková, Marie ; Muňoz, Jaime ; Váňa, Vojtěch
The basic aim of the methodology is to provide farmers, agricultural advisors, providers of biogas plants and anyone others the basic information about growing and processing for biogas a prospective crop - hemp Cannabis sativa L. Up to now, a comprehensive methodology for cultivation and utilization of this crop for biogas production is not processed. The publication provides basic botanical characteristics of the crop, specifies its soil and ecological habitat requirements, describes the agricultural technologies for seeding, cultivation, fertilization, plant protection, harvesting and post-harvest ensiling and gives an overview of potential yields of biomass and biogas, especially methane including their economic evaluation.
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Development of environmental friendly materials
Peterková, Jitka ; ,, Milan Machatka, (referee) ; Plachý, Jan (referee) ; Šťastník, Stanislav (referee) ; Zach, Jiří (advisor)
Increasing demand for new progressive construction materials requires development of modern environmentally friendly materials with excellent end-use properties and reasonable price. One of the main objectives of material research in building industry is using renewable resources of raw materials of industrial waste for development of new construction materials. Current trend of thermal insulation of building constructions results in development of environmentally friendly insulation materials based on renewable material resources from agriculture and stock farming, which could became alternative for current common use insulation materials in the future. The thesis describes research and development of insulation materials based on natural fibres of agricultural origin; in particular fibres of hemp, flax and jute. Hydrothermal behavior of developed materials is studied including computational simulation of behavior of researched materials after building in the construction.
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Pultrusion process of composite based on natural fibres
Letavaj, Emil ; Bábík, Adam (referee) ; Přikryl, Radek (advisor)
The theoretical part of bachelor thesis is focused on general overview of composite materials, natural fibers and their various modifications. The practical part is based on chemical treatment of flax fibers by two types of silanes, in order to optimize the interface between the phases in the composite material. Such modified fibers were applied to produce composites by pultrusion technological process. In conclusion, the impact of chemical treatment of flax fibers was reviewed on the mechanical properties of the resulting composite profiles.
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Zabezpečení laboratorní detekce geneticky modifikovaných organismů včetně mikroorganismů
Vysoká škola chemicko-technologická v Praze, Ústav biochemie a mikrobiologie, Praha ; Zdeňková, Kamila ; Pazlarová, Jarmila ; Demnerová, Kateřina
Cílem projektu bylo ověřování metodik vzorkování a stanovení přítomnosti GMO pro účely kontroly, účast na práci mezinárodní komise pro akreditaci GMO laboratoří, zapojení do přípravy příslušných norem na mezinárodní úrovni, zejména v EU, operativní stanovení přítomnosti GMO v rostlinných, příp. mikrobiálních materiálech ve vzorcích dodaných ČIŽP, uchovávání referenčních vzorků pro potřeby objednatele a ČIŽP, spolupráce se Společným výzkumným ústavem Evropské komise (Joint Research Centre EC) v Ispře, plnění úkolů v rámci evropské sítě detekčních laboratoří GMO (European Network of GMO Laboratories - ENGL), zprostředkování informací objednateli, spolupráce s ČIŽP při školení pracovníků a metodické konzultace pro pracovníky ČIŽP, poskytování podkladů SZÚ CHŘP Brno pro zpracování přehledu metod pro průkaz a stanovení GMO a GM produktů v laboratoři FPTB a podkladů pro zpracování přehledu uchovávaných referenčních vzorků.
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Lime composite reinforced with organic fibres
Drdácký, Miloš ; Michoinová, D.
Paper presents selected results of research into a complex influence of addition of natural fibres (horse and goat hair), natural fibrous particles (saw dust) and modern polypropylene fibres on some material characteristics of lime mortars. There are presented recommendations for use of such mortars in conservation practice.
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Experimental determination of stress-strain dependence of non-standard materials
Vavřík, Daniel ; Drdácký, Miloš
The subject of this work is experimental determination of mechanical properties for different types of animal hairs. Mortars reinforced by thin fibres have promising properties for application in cultural heritage protection. Theoretical research is based on mathematical modeling of composite materials with inorganic (brittle) matrix and differential types of reinforcement fibres - natural as well as man made polymeric fibres. For these models, knowledge of mechanical properties of the fibres is needed. Optical method developed especially from this purpose will be introduced in this paper.
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