|
|
Analysis of Logistic Maps
Adeleke, Joshua Owolabi ; Šremr, Jiří (referee) ; Řehák, Pavel (advisor)
Logistická mapa souvisí s diskrétní logistickou rovnicí. Na rozdíl od svého kontinuálního protějšku vykazuje logistická diferenční rovnice velmi komplikovanou dynamiku včetně chaotiky chování. Tato práce tak zkoumala kvalitativní chování logistické mapy podle pomocí některých matematických nástrojů. Tato dynamika byla studována systematicky, a to tak, aby její povaha byla čistá forma až do bodu, kdy bylo komplikované se s ní vypořádat, byly pečlivě studovány. dále pojem konjugace byl zaměstnán v okamžiku, kdy jeho analytický výpočet představoval být komplikovaný, s čímž byly dále odhaleny jeho vlastnosti. Byly učiněny pozoruhodné závěry, mezi nimiž je popis chaotického chování logistická mapa, jak ji odhaluje její spojení se stanovou mapou. V průběhu této studie tedy existuje další nástroj pro vyšetřování chaotického chování byla poznamenána logistická mapa, která je symbolickou dynamikou, se kterou se bude v budoucnu studovat logistická mapa může zabrat.
|
|
|
Horizontální přenos genů rezistence mezi bakteriemi
Valach, Radek
Transfer of bacterial antibiotic resistence is highly discussed topic in past years. Its spreading is reason of creating super-resistant bacterial strains, that are resistant to a wide range of conventionally used drugs. Zinc oxide, used in pig farming as a feed supplement, has in recent years replaced antibiotics, given to prevent gastrointestinal disease and to promote growth. These substituent may increase transfer of genetic elements carying antibiotic resistence genes. This thesis is focussed on possible influence of zinc oxide and its nanoparts on Enterococcus faecalis bacteria. The aim of this work was to investigate whether the action of ZnO and ZnONPs would increase the transfer of a resistance gene plasmid between bacteria through the process of conjugation.
|
|
|
Analysis of Logistic Maps
Adeleke, Joshua Owolabi ; Šremr, Jiří (referee) ; Řehák, Pavel (advisor)
Logistická mapa souvisí s diskrétní logistickou rovnicí. Na rozdíl od svého kontinuálního protějšku vykazuje logistická diferenční rovnice velmi komplikovanou dynamiku včetně chaotiky chování. Tato práce tak zkoumala kvalitativní chování logistické mapy podle pomocí některých matematických nástrojů. Tato dynamika byla studována systematicky, a to tak, aby její povaha byla čistá forma až do bodu, kdy bylo komplikované se s ní vypořádat, byly pečlivě studovány. dále pojem konjugace byl zaměstnán v okamžiku, kdy jeho analytický výpočet představoval být komplikovaný, s čímž byly dále odhaleny jeho vlastnosti. Byly učiněny pozoruhodné závěry, mezi nimiž je popis chaotického chování logistická mapa, jak ji odhaluje její spojení se stanovou mapou. V průběhu této studie tedy existuje další nástroj pro vyšetřování chaotického chování byla poznamenána logistická mapa, která je symbolickou dynamikou, se kterou se bude v budoucnu studovat logistická mapa může zabrat.
|
|
|
Diversity and ecology of filamentous green conjugate algae
Strouhalová, Pavla ; Šťastný, Jan (advisor) ; Pichrtová, Martina (referee)
Filamentous conjugating algae have a cosmopolitan distribution. They often inhabit fragile freshwater habitats such as temporary hydrated ditches or puddles of melting snow. Occurrence in this environment entails having to deal with extreme conditions. That helps them to variously adaptation and also the formation of resistant stages. Algae belonging to this group have an important role in nature, because they are often the first species that inhabit newly created habitats and consequently also often become the dominant species. Diversity, as well as the ecological requirements of individual representatives, is unclear. Taxonomy of filamentous algae is conjugating is most based on morphological characters that are not very reliable. For filamentous conjugating algae is polyploidy really frequent. With changeable ploidy relate also morphological variability and different environmental requirements.
|
|
|
Cryptic and pseudocryptic diversity of conjugating green algae (Zygnematophyceae)
Kupčíková, Eva ; Šťastný, Jan (advisor) ; Škaloud, Pavel (referee)
This bachelor thesis summarizes the most commonly used species concepts in the class Zygnematophyceae. This group of algae and the molecular markers used in the zygnematophytes' molecular phylogeny will be presented in this thesis. Zygnematophytes have unicellular or multicellular forms and they generally occur in freshwater habitats. Desmids are useful as indicators of water quality and they are also used for scoring of conservation value. Therefore it is important to have the species well defined. The confusion in defining of desmid species was caused by often very variable morphology. Some authors had different opinions on the classifying of desmid species and theirs subunits. The combination of molecular phylogeny, electron microscopy and geometric morphometrics was used in revealing of (pseudo)cryptic species in the genera Micrasterias or Xanthidium. The geometic morphometrics was helpful for finding of important details for distinguishing of particular pseudocryptic species. Key words: cryptic and pseudocryptic diversity, conjugation, desmids, Micrasterias, Euastrum, Xanthidium, molecular phylogeny, taxonomy, geometric morphometrics, biogeography, green algae
|
|
|
scillation within the Czech Verbal Conjugation
DUŠÁKOVÁ, Lenka
The Czech conjugaion is typical of relative instability of particular conjugation paradigma. The aim of this thesis is to examine a systematic transitiv of verbs of one class to another class on the one hand and to examine fluctuation of chosen verbs between different patterns, to determine topical forms of these transitions and fluctuation and finally to determine the direction of this transitiv, i. e. identificate more frequently used paradigma for each transitiv and fluctuation on the other hand. De facto it is the eximinaton of stability of verbal conjugation, with the aim to identify stronger or more dominant paradigma. A typice example of the transitiv is the migration of verbs from first class (mazat) to fifth class (dělat), a typice example of fluctuation is the second class, in which individual verbs tend to fluctuate between different patterns. Neither the fluctuation nor the transitiv do not happen at the same level in all morphological forms: the aim of this thesis is to identify these forms and determine the level and frequency of fluctuations and transitions in the contemporary usage from the corpus data (ČNK) and data obtained from questionnaires. This work is dividend into a theoretical part and a practical part. In the theoretical part we discuss verbal categories and classification of verbs based od them. Besides the classical Czech systém, we describe also one-stem systém (Townsend 2000, section 2.2), then we describe individual classes, patterns and also transitions and fluctuations esistin in the Czech verbal systém. The practical part is dedicated to verification of described tendencies. We proceed along two lines: on the one hand we use data from ČNK and on the other hand, (led by an effort to reach even spoken, not only written languages, in which the corpus SYN is based), the author made a questionnaire to which 85 people responded. The results of both examinations overlap.
|
|
|
The possibilities of using nanoparticles of various metals as the markers for immunocytochemical labelling in field emission scanning electron microscopy
EIBLOVÁ, Veronika
Nowadays, electron microscopy is a widespread method used in many biological branches like medicine, physical science, mikrobiology or material technology. Scanning electron microscope is a type of an electron microscope that shows the sample surface by scanning it with a high-energy beam of electrons in a raster scan pattern. The signal of electrons reveals information about the sample such as morphology, chemical composition and structure and materials. Gold nanoparticles are widely used as a marker for immunolabeling in these days. The main point of this research was to find other nanoparticles, which can be used for multiple immunolabeling. The main task of this study is to conjugate these particles with atibodies, to use them for immunolocalisation on the convenient biological sample and to observe it in FESEM JEOL JSM-7401F.
|
guest ::
