Přírodovědecká fakulta: Poslední příspěvky
Zobrazují se záznamy 1-20 z 13751
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Diverzita pářícího chování švábů (Blattodea: Blaberidae)
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 18. 9. 2017Mating behaviour of cockroaches is spectacular phenomenon with three different mating patterns traditionally distinguished. The most common and probably ancestral is type A - female climbing. Then it is type B - male ... -
Structural studies of selected signaling protein complexes.
(Univerzita Karlova, Přírodovědecká fakulta, 2019)Datum obhajoby: 26. 2. 2019The ability of proteins to bind other molecules in response to various stimuli in their microenvironment serves as a platform for extensive regulatory networks coordinating downstream cell actions. The correct function of ... -
Zjišťování struktury pórotvorných kolicinů
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 15. 9. 20176 Abstract This master's thesis provides study of individual helixes from C-terminal pore-forming domain (CTD) of colicin U and their behavior in lipid bilayer on atomic level. For this purpose the all-atom molecular ... -
Optimalizace metodiky pro stanovení volné nádorové DNA v plazmě a její klinické využití u pacientů s karcinomy kolorekta, plic a slinivky břišní
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 14. 9. 2017In current days, examination of circulating tumor DNA (ctDNA) finds new use across different cancers. It is directed at tumor-derived short fragments of DNA present in peripheral blood of patiens (mainly in advanced stages). ... -
Analyses of Monocercomonoides genome sizes, ploidies and karyotypes
(Univerzita Karlova, Přírodovědecká fakulta, 2019)Datum obhajoby: 22. 2. 2019Oxymonads are a group of flagellate protists living in low oxygen environments - mainly the guts of insects and vertebrates. In this study, we focus on the analysis of ploidy and karyotype of various species of oxymonads ... -
Srovnání evolučních rychlostí gonozomálních a autozomálních genů u plazů
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 13. 9. 2017According to the "faster-X effect", X-linked genes and Z-linked genes evolve more quickly than autosomal genes. This theory is one of the currently intensively studied topics in evolutionary research. However, performing ... -
Genetické interakce genu Prdm9
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 13. 9. 2017The Prdm9 gene (PR domain containing 9, Meisetz, Hybrid sterility 1) encodes enzyme that trimethylates histone 3 on lysines 4 and 36. These methylation marks determine the positions of DNA double-strand breaks that are ... -
Vznik triploidních hybridů a jejich evoluční potenciál v kontaktní zóně diploidního a tetraploidního cytotypu heřmánkovce nevonného (Tripleurospermum inodorum)
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 12. 9. 2017The presence of triploid individuals, whether hybrids arising from crosses of diploid and tetraploid plants, or spontaneously generated triploid hybrids diploid populations, is increasingly important in plant populations. ... -
Intraspecific plant-soil feedback as a mechanism underlying invasiveness of neophytes of the Czech Republic
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 11. 9. 2017Intraspecific plant-soil feedback is a relationship in which plant affects the composition of the soil and such modified soil affects growth of the same plant species. This relationship and its intensity may be linked with ... -
Evoluce pohlavních chromozomů a karyotypů hadů
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 11. 9. 2017Snakes (Serpentes) are a group of squamate reptiles (Squamata) including more than 3600 species. The vast majority of snakes are from the group Caenophidia, which includes approximately 90% of all extant snake species and ... -
Role of phenotypic plasticity, genetic and epigenetic differentiation in ecophysiological traits of Festuca rubra L. in response to climate change
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 11. 9. 2017Understanding the ability of species to respond to climate change is essential for prediction of their future distribution. When migration is not adequate, reaction via phenotypic plasticity and/or genetic/epigenetic ... -
Signaling function of plumage coloration in Yellowhammer males
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 11. 9. 2017Sexual selection theory tries to explain evolution of apparently useless traits which mainly developed in males of numerous species. One such trait is also rich and vibrant coloration, typical for many of the bird species. ... -
Hmotnostní proporcionalita a tělesné složení u současných českých předškolních dětí
(Univerzita Karlova, Přírodovědecká fakulta, 2019)Datum obhajoby: 18. 2. 2019The diploma thesis is focused on the evaluation of actual state in somatic parametres, weight proportionality and body composition of contemporary Czech preschool children. The aim of this study is to prove validity of ... -
Pohlavní dimorfismus a morfologie lebky s ohledem na sociální strukturu velkomoravského pohřebiště Mikulčice
(Univerzita Karlova, Přírodovědecká fakulta, 2019)Datum obhajoby: 18. 2. 20191 Abstract This diploma thesis deals with the influence of gender and socio-economic affinity on skull morphology in the population of Slavs from early medieval settlement Mikulčice. Mikulčice was the power center of Great ... -
Localization of cytosolic isoforms of creatine kinase and hexokinase in hypertrophied heart
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 7. 9. 2017Hypertrophy of the heart is tightly bound to the metabolic adaptations and a cellular remodeling. An important and dynamic system contributing to the maintenance of energy homeostasis is the creatine kinase system (CK). ... -
Energetický metabolismus a apoptotické markery v srdci potkana adaptovaného na chlad.
(Univerzita Karlova, Přírodovědecká fakulta, 2017)Datum obhajoby: 7. 9. 2017Cold adaptation and her effects has been known for many decates. Positive or negative impact depends especially on its length and strength. The lower temperature can very often cause the stress for organism. On the other ... -
Rostlinné tomosyny a jejich funkce v sekreci
(Univerzita Karlova, Přírodovědecká fakulta, 2019)Datum obhajoby: 15. 2. 2019Tomosyn is a protein belonging to the Lgl family and conserved across the animal and plant kingdom. Tomosyn is composed of N-terminal domain containing WD40 motif and Cterminal domain, where the R-SNARE motif is located ... -
Hledání nových biomarkerů neplodnosti mužů pomocí transkriptomu spermií
(Univerzita Karlova, Přírodovědecká fakulta, 2019)Datum obhajoby: 14. 2. 2019Currently infertility affects 10 to 15 percent of couples. In nearly 50% of all cases male factor contributes to infertility of the couple. Majority of causes of male infertility remains unexplained. For this reason, finding ... -
Koaxiální nanovlákna s inkorporovanými suplementy pro řízenou chondrogenní diferenciaci
(Univerzita Karlova, Přírodovědecká fakulta, 2019)Datum obhajoby: 14. 2. 2019In the field of regenerative medicine, regeneration of cartilage defects (caused either by injury or age-related degeneration) has become a widely discussed topic. Nanofibrous scaffolds provide a suitable environment for ... -
Postoj žáků středních škol k biologii
(Univerzita Karlova, Přírodovědecká fakulta, 2019)Datum obhajoby: 7. 2. 2019Understanding of students' attitudes is important in supporting their interest toward a particular subject. Students' attitudes toward science have been extensively studied and it has been showed that their interest decrease ...