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1	Vliv jednotlivých fázi výrobního procesu Lignamonu a jejich vzájemných interakcí na výslednou odolnost vůči dřevokazným houbám Nevrlý, Ondřej January 2018 (has links) In this work is discussed about material Lignamon, which has been industrially produced in the former Czechoslovakia since the 1970s. The production of this material, mainly from beechwood, combines plasticization with gaseous ammonia, densification of material by hydraulic press and heat stabilization at 180 ° C. The aim of this work is to determine the effect of these processes on the resulting resistance to wood-decaying fungi. Lignamon has a very high resistance to wood-decaying fungi and is classified as very durable according to EN 350 - 1. For each phase of the Lignamon process, samples were produced to best illustrate the changes that take place during the given phase in the wood. In particular, sample sets treated with ammonia gas, densified samples, heat-treated samples, and samples on which a combination of ammonia gas impregnation and thermal modification were performed. The resistance to wood-decaying fungi have been tested according to EN 113, including a set of Lignamon samples. The results of this test were statistically evaluated and it was found that ammonia treatment has the greatest influence on the durability of Lignamon, as well as the heat treatment and not so significantly densification. Individually, however, none of these modifications cause wood resistance to wood-decaying fungi as their combination in the production process of Lignamon.
2	Vliv fyzikálních metod a nových chemických preparátů na bázi nanočástic na vybrané dřevokazné houby napadajících dřevěné konstrukce - možnosti a limitace moderních metod prevence / The impact of physical methods and new chemical preparations based on nanoparticles on selected wood-rotting fungi invading wooden structures - possibilities and limitations of modern techniques of prevention Švec, Karel January 2016 (has links) 83 Abstract The work focuses on the physiology of wood-rotting fungi and the possibilities of their inhibition by physical methods (microwave and gamma irradiations, dry heat) or newly developed chemical preparatives contaning metallic nanoparticles. The effect of abovementioned treatments on mycelial growth, activities of extracellular enzymes responsible for wood degradation and on spore germination or viability was studied in selected strains of wood-rotting fungi obtained from culture collection (Coniophora puteana, Fibroporia vaillantii, Gloeophyllum sepiarium) or isolated from infected buildings (Serpula lacrymans).
3	Actions of lignocellulolytic enzymes on Abies grandis(grand fir) wood for application in biofuel production Cherdchim, Banyat 27 October 2010 (has links) No description available. 000 Allgemeines Wissenschaft Forest Sciences and Forest Ecology Abies grandis Armillaria mellea Heterobasidion annosum Heterobasidion parviporum Pleurotus ostreatus Trametes versicolor Coniophora puteana biodegradation cell wall modification urea formaldehyde ammonium sulphate mass loss area fraction stained cell wall cell wall area latewood earlywood oxidative enzyme MBTH laccase-mediator manganese peroxidase butylhydroxytoluol carbon chromatography fraction Coprinopsis cinerea decay fungi 1 4-dihydroxybenzene p-benzochinone 3 5-di-tertbut-4-hydroxy-toluene GC-MS analysis gel electrophoresis growth inhibition 4-hydroxy cinnamic acid laccase induction nitrogen phenolic compounds p-coumaric acid wood extraction wood extractives biofuels chemical pretreatment physico-chemical pretreatment biological pretreatment microwave irradiation liquid acid rate of production of glucose kinetic curve of production of glucose influence of wood extractive influence of phenolic compound Abies grandis Armillaria mellea Heterobasidion annosum Heterobasidion parviporum Pleurotus ostreatus Trametes versicolor Coniophora puteana biodegradation cell wall modification urea formaldehyde ammonium sulphate mass loss area fraction stained cell wall cell wall area latewood earlywood oxidative enzyme MBTH laccase-mediator manganese peroxidase butylhydroxytoluol carbon chromatography fraction Coprinopsis cinerea decay fungi 1 4-dihydroxybenzene p-benzochinone 3 5-di-tertbut-4-hydroxy-toluene GC-MS analysis gel electrophoresis growth inhibition 4-hydroxy cinnamic acid laccase induction nitrogen phenolic compounds p-coumaric acid wood extraction wood extractives biofuels chemical pretreatment physico-chemical pretreatment biological pretreatment microwave irradiation liquid acid rate of production of glucose kinetic curve of production of glucose influence of wood extractive influence of phenolic compound 48.46 Holz YQ 000: Forstbotanik
4	Návrh rekonstrukce dřevěných konstrukcí stávajícího objektu / The reconstruction design of timber structures of the existing building Bartlová, Jana January 2015 (has links) The content of this work was to carry out construction-technical survey of timber structures of the existing building in order to design an appropriate procedure for their reconstruction. The survey showed construction in an unsatisfactory to disrepair, so further work also includes the static calculation of new structures proposed instead of the current. Timber structure in the building has form of staircase, roof and ceiling construction. Newly designed the following types of stairs and roof trusses from which the lower belts are used as ceiling beams. The new proposal also includes possible roofing, roofing options, developed one of them. The work also includes drawings, bill of materials and cost estimate staircase structure and truss. Specialization in the field of civil engineering is represented by drawings of the new truss and passport (view of current state) whole object on parcel ST.74 / 1, land Tišnov (okr.Brno-venkov), the content of which was the basis for this work.

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