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History of Civil Aviation 1970-2000
Sehnálková, Radka ; Bencalík, Karol (referee) ; Chlebek, Jiří (advisor)
The main subject of this bachelor’s thesis is concise and clear history of civil aviation between year 1970 and 2000. This era is typical with outset of large transport aircraft, which are intended for long distances and big number of passengers, but attention is also paid to aircraft, which are not for transport of so many passengers. Thesis is focus on concise description of individual aircraft, divided by its types of propulsions and producer.
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Diurnal changes of Rubisco activity under ambient and elevated concentrations of carbon dioxide
Uhrová, Lucie ; Vítová, Eva (referee) ; Hrstka, Miroslav (advisor)
Diurnal changes of Rubisco activity under the impact of ambient (380 µmol mol-1) and elevated (700 µmol mol-1) concentrations of carbon dioxide were studied in beech (Fagus sylvatica). Samples from leaves were taken in the two-hour intervals from 4:00 to 21:30 on the 22. 7. 2009 and activity of Rubisco was determined spectrophotometrically. No statistically significant differences were found between Rubisco activity of leaves growing in ambient and elevated CO2 concentrations. No increase of Rubisco total activity after daylight shows that nocturnal inhibitor CA1P is not present or plays only negligible role in beech. During the day Rubisco activity showed only statistically insignificant deviations. A slight decrease of Rubisco activation state in the afternoon indicates the afternoon depression of Rubisco initial activity.
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Analysis of methods for determining wood moisture by non-destructive methods
Změlík, Jiří ; Zach, Jiří (referee) ; Vaněrek, Jan (advisor)
Subject of this bachelor thesis is the analysis and comparison of hygrometers considering their price, availability and applicability. Theoretical part compared available types of hygrometers based on their operating principle. Subsequently, resistance, capacitive and microwave portable hygrometers were compared in more detail. There were five reviewed hygrometers in total, with three of them capacitive and one of each resistance and microwave. The measurement was performed on beech and spruce trees at gravimetrically known humidity, ranging from extremely low to extremely high values (even out of bounds recommended by the manufacturer). The evaluation of the methods was performed according to the Saaty´s AHP method. Hygrometers were then selected by their optimization. After the experimental part, the suitability of individual methods was determined. The best method was capacitive, followed by resistance and the worst microwave method.
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Renovation of the castle in Velké Němčice
Malínková, Valerie ; Muroň, Ivo (referee) ; Ležatka, Lukáš (advisor)
This bachelor thesis deals with the restoration of a castle in Velké Němčice. The thesis builds on an architectural study carried out in the AG033 course of the Restoration of Monuments Studio. The task of the thesis is to create a complete project for the appropriate restoration and reconstruction of the castle and to propose its new utilization. At the same time, the thesis focuses on the solution of the castle's immediate surroundings. The object of the solution will be designed as a socially cultural object with administrative functions. The castle should serve as a new town hall, and in accordance with this, the following rooms will be created in the castle: a ceremonial hall, information center, mayor's office, secretary's office, registry office, accountant's office, archive, library, club room, refreshment facility, and interactive room. To achieve the implementation of the new operation in the castle, the correct restoration of the historical object is necessary. Using surveys and historical sources, I examine the architectural values and construction of the building. I strive to preserve historically significant layers, remove intrusive modern elements, and return the object its original expression. With the help of new technologies, I also strive to preserve the building for future generations. I propose minimum use of modern structures and elements, and therefore mainly focus on proper reconstruction and restoration.
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Diurnal changes of Rubisco content and its activity under ambient and elevated concentrations of carbon dioxide
Matulková, Zuzana ; Zemanová, Jana (referee) ; Hrstka, Miroslav (advisor)
In this diploma thesis, the diurnal changes of initial and total Rubisco activity and Rubisco enzyme content in beech (Fagus sylvatica) were studied under conditions of ambient (A) CO2 concentration (350 µmol.mol-1) and elevated (E) CO2 concentration (700 µmol.mol-1) during the day. Samples were taken on July 8th (from 10:00 to 21:30), on July 9th (from 04:00 to 12:00) and then on July 22th (from 04:00 to 21:30). The initial and total activity were measured spectrophotometrically and the activation level was calculated from the ratio of initial and total activities. Rubisco enzyme content was determined by SDS-PAGE method and the initial and total specific activity were calculated from the ratio of initial or total activity and Rubisco enzyme content. In our experiment no statistically significant difference was found between Rubisco activities in beeches cultivated under conditions of ambient CO2 concentration and elevated CO2 concentration, so any down-regulation of Rubisco activity did not appear under the influence of ambient CO2 concentration. Diurnal changes of Rubisco activities showed only statistically nonsignificant fluctuation. After daylight no significant increase of total Rubisco activity was observed, which demonstrates the absence or the immaterial effect of CA1P night inhibitor in beech. Intensive fluctuation of the activation level (40–90 %) proves the regulation of photosynthesis during the day via Rubisco enzyme carbamylation. Rubisco enzyme content in beech cultivated under conditions of ambient CO2 concentration was lower than that one in beech cultivated under conditions of elevated CO2 concentration. Then down-regulation of Rubisco enzyme content is presented under conditions of ambient CO2 concentration. Before daylight Rubisco enzyme content showed an indistinctive minimum on the level of statistical significance, during the day only nonrelevant fluctuation was noticed.
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Influence of elevated carbon dioxide concentration at Rubisco activity and its content in sunny and shaded leaves of beech
Vičíková, Magda ; Vitoulová, Eva (referee) ; Hrstka, Miroslav (advisor)
This bachelor thesis focuses on influence of elevated carbon dioxide concentration at Rubisco activity and its content in sunny and shaded leaves of beech (Fagus sylvatica). The initial and total activities were measured spectrophotometrically, the content of Rubisco was determined by using SDS-PAGE method. It was observed statistically significant higher activity of Rubisco in leaves cultivated under elevated concentrations of carbon dioxide in June but not in September. In contrary, exposure of leaves (sunny/shaded) did not have significant influence on Rubisco activity in June, but in September was found lower activity of Rubisco in shaded leaves than in sunny leaves. The content of Rubisco was lower in leaves cultivated under elevated concentrations of carbon dioxide (acclimation), with the exception of shaded leaves in September. There was found significantly lower Rubisco content in shaded leaves than in sunny leaves both in June and in September.
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The dynamics of non-structural saccharides accumulation and Rubisco activity under the elevated carbon dioxide concentration and sink manipulation at beech
Uhrová, Lucie ; Vítová, Eva (referee) ; Hrstka, Miroslav (advisor)
This diploma thesis deals with dynamic of accumulation of non-structural carbohydrates and activity of Rubisco enzyme at elevated concentration of CO2 on beech (Fagus sylvatica L.). Three years old seedlings of beech were cultivated in minisphere with ambient (385 µmol•mol-1, variant A), and with elevated concentration CO2 (700 µmol•mol-1, variant E) for four months. In every variant the first half of plants was fertilized by nitrogen (variant N+) and the second half was control (variant N-). Plants used for experiment were at first adapted for darkness for 12 hours. Subsequently tested leaves were cut off, leafstalk including short segment of branch (approximately 1 cm) was inserted into 0.7 M solution of sucrose (variant S) or water (variant V) and exposed to radiation 200 mol•m-2•s-1 for 0, 30, 60, 120, 180 minutes. Then leaf area and fresh mass of leaf blade were established, samples were fixed in liquid nitrogen and stored in deep freezer to analysis in –70 °C. Rubisco content was determined by SDS-PAGE method, Rubisco activity spectrofotometrically and content of non-structural carbohydrates by anthrone method and HPLC method. Rubisco content was significantly lower in the N- variant than in N+ variant. Rubisco content was also significantly lower in E than in A variant, which is an evidence of down-regulation. Rubisco activity is moderately stimulated at E variant with time, but differences between variant A and E are not statistically significant. Influence of sucrose feeding to Rubisco activity was not proved. Significant differences were detected by anthrone method in non-structural carbohydrates content between variants S and V, but not between variants A and E. Statistically significant increase of sucrose content with time was detected by HPLC method at variant AS, but not at variant ES.
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Biotopové nároky lejska malého (Ficedula parva) v lesích jižní a východní Moravy
Holek, Michal
This study investigates the habitat requirements of the Red-breasted Flycatcher at 41 sites in the Drahanská vrchovina, Chřiby, Hostýnsko-vsetínská hornatina and Bílé Karpaty based on the observed abundance of the species in the breeding season 2022. At the sites, the locations of its occurrence and the locations of checkpoints without the presence of the lei were recorded inside and outside the site. Stand characteristics were then collected at these points and then analysed for their statistical significance for the species' occurrence. Forty-seven Red-breasted Flycatchers were recorded at the study sites. Distance from water, forest development stage, amount of dead wood, distance from the edge of the stand and beech (Fagus sylvatica) cover had a significant effect on the occurrence of the Red-breasted Flycatcher. Distance from water emerged as the most significant characteristic, with 51 % of individuals found within 90 m of a watercourse. Red-breasted Flycatcher preferred emergent and, to a lesser extent, mature logs with significant amounts of dead wood. These were mainly stands with beech cover above 80 %. The Red-breasted Flycatcher was shown to be an interior-nesting species, as 85 % of individuals were found more than 100 m from the edge of the stand. The thesis concludes by discussing the findings and comparing them with the literature. From the results, recommendations for forest management are proposed for effective conservation of the Red-breasted Flycatcher in forest habitats.
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Vplyv extrémneho umyvacieho procesu na pevnosť v ohybe lepeného spoja v listnatom dreve
Tuhý, Dušan
The diploma thesis is focused on the issue of the effect of the washing process on the bending strength of the glued joint in a special solid wood panel made of hardwood. The goal was to analyze currently available adhesives and types of joints in solid wood panels and to deal with the issue of the washing process and its influence. The selected glue was PVAc glue Rakoll ® GXL 4 and a butt joint, and then the changes in bending strength were compared on wood samples from beech, oak, ash and maple after thirty cycles of an intensive washing process using cleaning tablets and subsequent acclimatization of the samples. These were compared with samples that did not undergo the cleaning process.
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Ztráta účinku výchovných zásahů ve smíšeném dubo-bukovém porostu (36A8) na ŠLP Křtiny
Černíková, Karla
The aim of the work was to evaluate the loss of the effect of individual thinnings in the oak-beech forest in Training Forest Enterprise. A research area of 0.84 ha was established in 1989 in a stand that was 49 years old. Thinnings were carried out on this research area (crown, low and Voropanov-Borgrewe thinning). Part of the area was left to natural development (reference area), which took as a comparison. The height, height of the base of the crowns, thickness was measured and the form of the trunk and crown according to Polansky's classification were estimated on individual tree. Measurements were carried out in 1989, 1999, 2005, 2010, 2015 and 2020. There was no response for the thickness when the variants of the thinning method were compared with the reference plots. In the first 10 years, the height increase was recorded in the case of Voropanov-Borgrewe thinning for the oak, and also, in the reference area, where the weakest and lowest oaks died. After 15 years, the height curves of Voropanov-Borgrewe thinning and reference plots were similar as the other methods, and the thinning effect was lost. In the beech, there was no effect of the thinning methods on the height. The effect of self-thinning was very successfully in beech, which is most noticeable in recent years. In the oak, there was no effect of the thinning methods for the parameter the height of the base of the crown compared to natural development. In the beech, there was the effective thinning method in the case of Voropanov-Borgrewe thinning. The factors that were evaluated based on the Polansky classification (the form of the trunk and crown) did not show improvement in oak and beech in any case of thinning methods. In conclusion, we can say that the final evaluation of the effectiveness of thinning methods, which were carried out only once, is not considered significant compared to the natural development of the stand.
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