|
|
Investigation of yeast properties during the beer fermentation
Kociánová, Lenka ; Vítová, Eva (referee) ; Omelková, Jiřina (advisor)
In this diploma thesis, the properities of brewery’s yeasts during the operation beer fermentation in the selected brewery and dependences of diferent agents and their influence on viability and vitality of the yeasts were studied. Other observed properities were physiological state, pH, temperature, a value of soft and coarse sludges, a value of dissolved oxygen in wort, the level of wort’s fermentation. It were collected the samples of fermenting wort and washing yeasts for determination. The used yeasts were observed from the first time until thein last used (generally 4 times). pH, temperature, apparent fermenting and total numer of yeast cells were measured in the collected samples. The used yeasts were washed before every other application and vitality was determined. The number of death cells were observed by this method. The number of death cells never fell bellow 5 %. The value of dissolved oxygen in wort is also the important agent for the growth of yeasts. The touchs with low number of oxygen showed that the time for fermentation had to be longer (by about 3 or 4 days more). The touchs with higher number of sludges showed that the sludges haven’t any influence on the yeasts and the procces of fermentation. Confirm the accuracy of the repeated used of the yeasts was the object of this thesis.
|
|
|
Vitality in the architectonic environment
Eyer, David ; Horáček, Martin (referee) ; Hudec, Mojmír (referee) ; Kyselka, Mojmír (referee) ; Žabičková, Ivana (advisor)
More and more research studies are being conducted on the quality of architectural space as a factor affecting our mental, social and physical health. In the past, this topic was often overlooked in its complexity. The establishment of the specialized fields of building biology, biophilic architecture and the works of Christopher Alexander and Nikos Salingaros now allow us to consider various facets of this subject. This dissertation aims to analyse the topic of vitality in architectural space by studying the abilities and perceptions of its users. Therefore its aim is not to develop a new theory of “vitality-enhancing architectural space”, but to describe how this phenomenon is perceived by the users themselves. Users can provide feedback on which features of architectural space they see as the most important for the feeling of vitality. These features have been hierarchically organized based on their perceived importance, analysed and described in detail to allow their relatively easy application in practice. This dissertation will also allow a comparison with other existing works on the studied topic.
|
|
| |
|
|
Odrůdová variabilita vitality osiva máku a její souvislost s velikostí kořenového systému
Jedličková, Žaneta
The thesis deals with seed vigour testing of 10 selected poppy genotypes. The aim was to determine the tolerance of poppy seed to selected suboptimal abiotic factors such as drought and temperature, and to clarify its relationship with the ability to form the root system or the final product - poppy seed in the yield-forming process. The laboratory part of the experiment was carried out at the Department of Crop Science, Breeding and Plant Medicine at Mendel University in Brno. Observations and measurements were carried out in a field experiment in the municipality of Chvalíkovice in 2022 under the direction of OSEVA PRO s.r.o. The results confirmed the expectation that the number of germinated individuals decreased with increasing drought intensity. Significant differences between genotypes were found when testing for vigour. Differences in root system size and seed yield were also found. An interesting finding of this work was the data showing a higher number of germinated individuals at 10 °C compared to testing at 20 °C. A statistically significant relationship was found when poppy seed vigour data were correlated with poppy root system size. The more vigorous the seed, the more able the plant is to form a robust root system in the early stages of growth. However, this relationship is no longer clearly reflected in the yield of poppy. There is no conclusive relationship between the vigour of poppy seed and its subsequent seed yield. A myriad of external factors enter into the poppy seed yield process, so it cannot be said that a highly vigorous seed will produce a large quantity of quality poppy seed.
|
|
|
Reakce sazenic vybraných druhů dřevin na zaplavení
Ryšavý, Jan
The thesis investigates the response to flooding of five species types of trees occurring in floodplain forests of South Moravia. This work aimed to evauate different lengths of the seedling flooding and examined seedling vitality and mortality. The investigated tree species were summer oak (Quercus robur L.), hornbeam elm (Ulmus minor Mill.), heart linden (Tilia cordata Mill.), hornbeam (Carpinus betulus L.) and field maple (Acer campestre L.). The flooding experiment was conducted from April to July 2022 and at different time intervals (7-14 days) the seedlings were flooded up to the root collar. Control seedlings were not flooded but only watered. 140 seedlings of each species were flooded and were gradually removed from the flood. The results show that relatively low mortality was observed for the flooded trees in all intervals. It was lowest for Quercus robur and Tilia cordata, which were characterized by high vitality in addition to low mortality. Ulmus minor was characterized by moderately vital seedlings. Acer campestre and Carpinus betulus had the highest mortality and their vitality decreased significantly towards the end of the experiment. The hypothesis of Quercus robur's resistance to flooding has been confirmed, which means the seedlings of this tree can probably cope well with flooding even in the conditions of floodplain forests. Tilia cordata also coped very well with flooding. It has probably invested in trunk thickness in response to water stress, adapted to flooding and thus gained a competitive advantage over other tree species. The thesis confirmed the assumption that Quercus robur is a resilient tree species to flooding and Tilia cordata showed higher resilience than expected.
|
|
|
Provedení detailního fytopatologického průzkumu a návrhy pro zlepšení stavu dřevin v Zoo Brno
Helánová, Sylva
The bachelor's thesis deals with the evaluation of the condition of woody plants, their vitality, health status, stability, operational safety and perspective. Furthermore, by proposing interventions to optimize their condition according to the methodology of the Nature and Landscape Protection Agency of the Czech Republic. A total of 200 trees were evaluated at the site - 11 small-leaved lindens (Tilia cordata Mill.), 11 hornbeam (Carpinus betulus L.) and 178 white oaks (Quercus petrea Liebl.). A field survey was carried out on these trees from March 2021 to March 2022. The results show that the trees on the site are not in good condition, their vitality and health are reduced. The presence of wood-destroying fungi such as Laetiporus sulphureus (Bull. Murrill) and Agrilus biguttatus (Fabricius, 1776) has also been discovered.
|
|
|
Využití přístrojových metod k hodnocení stavu stromů
Vančurová, Klára
The bachelor thesis is focused on the topic: Use of instrumental methods to evaluate the condition of trees. The first part of the literature review describes the vitality of trees and explains why they are evaluated. Subsequently, the work deals with the division of individual methods and devices into visual and instrumental evaluation. These are then further categorized according to their principle of use.Totaly were evaluated four instrumental methods of physiological vitality and for biomechanical vitality six visual and eighteen instrumental method. In the next part, based on the description of these instrumental methods, an analysis of companies in the Czech Republic was created, which provide measurement and evaluation of expert opinions with these instruments.
|
|
|
Development of the monitoring of forest health state under Life+ “FutMon” project in the Czech Republic: Data 2009 – 2011
Boháčová, Ludmila ; Lomský, Bohumír ; Šrámek, Vít ; Buriánek, V. ; Čapek, M. ; Fabiánek, P. ; Fadrhonsová, V. ; Hellebrandová, K. ; Lachmanová, Z. ; Novotný, R. ; Vortelová, L.
Systematic and periodical monitoring of forest health state in the Czech Republic (2009-2011).
Fulltext:  PDF
|
|
| |
|
|
Zhodnocení zdravotního stavu dřevin v lokalitě Brno - Moravské náměstí
Drda, Antonín
The thesis deals with evaluation of the state of the urban wood and their biodiversity. In total, three parks were evaluated and the parameters analyzed were compared to each other. A detailed inventory was carried out and the four main aspects were assessed, namely health, vitality, operational safety and biological value. The evaluation of these parameters was based on standardized tree evaluation procedures. According to these aspects, some tree species have been suggested to provide corrective action to ensure stability, taking into account the preservation of the individual's biological value. The result of the work is the inventory of the given site with assessment of the overall condition of the trees, proposals for measures for the individuals with the worst operational safety taking into account the preservation of their biological value and the list of accompanying organisms present on the trees.
|
guest ::
