|
|
Seasonal dynamics and winter survival mechanisms of Conjugatophyceae (Zygnnematophycaea)
Čížek, Tomáš ; Pichrtová, Martina (advisor) ; Šťastný, Jan (referee)
This paper summarizes the knowledge on seasonal dynamics of selected genera of Zygnematophyceae. During the year, organisms are exposed to different conditions, especially in winter they have to withstand increased stress. The seasonal changes of conditions is reflected by species composition, total algal biomass and occurrence of different life cycle stages. This work focuses on the mechanisms that different species of Zygnematophyceae use to survive cold and frost stresses. These mechanisms include the formation of specialized cells - zygospores, survival in modified vegetative stages and avoidance strategies. Their occurrence varies with latitude and altitude. The seasonality of individual species may play a role in biomonitoring. Keywords: biomonitoring, pre-akinetes, seasonality, stress adaptation, Zygnematophyceae, zygospore
|
|
|
Structural changes in the support phase of the step under the influence of increasing load using pressure shoe insole
Krejčí, Tomáš ; Šťastný, Jan (referee) ; Korvas, Pavel (advisor)
This bachelor thesis deals with the structural changes in the support phase of the step under the influence of increasing load. The measurements are provided by the "Medilogic WLAN insole" system, which can be used to perform static and dynamic pressure measurements on the feet using pressure sensors. In the theoretical part, information concerning the development of the lower limb, especially the leg and foot, and their anatomical structure is described. The biomechanics of gait is also described, including the main phases of the gait cycle. In the practical part of the thesis, the measurement methodology is described, including the instrument setup and the aids used during the measurements. Furthermore, the data processing procedure and its final analysis are presented.
|
|
|
The influence of specific training on the development of muscle strength of legs
Nepožitek, Jan ; Bátorová, Michaela (referee) ; Šťastný, Jan (advisor)
The bachelor thesis deals with the use of isokinetic dynamometry for the analysis of the effect of specific training. The introductory part of the bachelor thesis described isokinetics, history and types of muscle activities. There is also a proposal for a specific training, which the experimental group followed over the course of two months. Part of the work is to determine the measurement methodology on an isokinetics dynamometer, in which the experimental and control groups were measured before and after specific training. As part of the dynamometric testing, the muscular strength of the lower limbs in the knee joint was measured, in which the quadriceps and hind muscles were the most involved. The assumpiton was that experimental group would have an increase in muscle strength after completing a specific training. The measured values were processed in the Matlab software environment, thanks to which the individual signals and the maximum values of individual measurements were plotted. The measured values were statistically processed and evaluated using non-parametric tests. It was found that specific training had a partial effect on the development of muscle strength in the lower limbs.
|
|
|
Swimming analysis using a SwIMU measuring device
Láznička, Jakub ; Šťastný, Jan (referee) ; Bátorová, Michaela (advisor)
This bachelor thesis deals with the description of the inertial sensor for measuring swimmers.The work contains a description of the possibility of performing swimming performance analyzes. In the practical part, a pilot measurement was performed and a detailed manual was created containing a description of accessories, the measurement process and the methodology of subsequent evaluation. An external database in MS Excel was created to compare the evaluated measurements, used to sort data with the possibility of statistical processing.
|
|
| |
|
|
Diversity of the Micrasterias papillifera / M. radiosa (Desmidiales) species complex
Trumhová, Kateřina ; Šťastný, Jan (advisor) ; Mareš, Jan (referee)
This Master's thesis deals with diversity within the Micrasterias papillifera/ M. radiosa (Desmidiales) species complex. Both species are inhabitants of endangered biotops, like peat-bogs and, like other desmids, are used for biomonitoring. Many described varieties for both of them can be found in taxonomic literature, but their morphology is overlapping and revision of this species complex seemed to be necessary. All strains were isolated from peat-bogs and lakes across Europe and my dataset was properly completed by strains from algal collections. Results of phylogenetic analysis of sequences for ITS and psaA showed, that the real intraspecific diversity of Micrasterias papillifera Brébisson ex Ralfs was overestimated. Although I could find a little intraspecific diversity within the ‚papillifera' lineage in the phylogenetic tree based on ITS sequences, it did not correspond with a morphology of isolates. M. papillifera possess unexpected morphological plasticity and also some isolates designated as Micrasterias radiosa Ralfs were present in this lineage. On the contrary, there were only a few isolates in the lineage ‚radiosa'. This species seems to be relatively rare and probably has limited distribution. Both species are morphologically well delimited from each other on the basis of several characters...
|
|
|
Ombrotrophy and minerotrophy of acidic wetlands - ecological and environmental indicators
Hanousková, Andrea ; Neustupa, Jiří (advisor) ; Šťastný, Jan (referee)
In this thesis I focus on different aspects of two basic types of peatlands - ombrotrophic bogs and minerotrophic fens, that differ in the source of their water supplies. In case of the bogs, all the moisture comes from precipitation, the fens are in varying degrees supplied with water from the mineral soil and bedrock. This concept is based on the assumption that hydrological conditions are essential for other properties of acidic wetlands, especially for vegetation, which is still the subject of discussion. Therefore I mention different gradients of peatlands (pH, nutrients and minerals) and important processes (succession, accumulation of peat) with regard to their relation to minerotrophy and ombrotrophy and I discuss their importance for the entire ecosystem. In the second part of my thesis, I focus on the algal assemblages in peatlands, which despite its immense diversity often form a neglected component of these ecosystems. The structure of algal communities vary in space and time under the influence of various factors, including, among others, ombrotrophy and minerotrophy. Powered by TCPDF (www.tcpdf.org)
|
|
|
Diversity, distribution, phylogeny and ecology of the genus Micrasterias (Desmidiales)
Trumhová, Kateřina ; Šťastný, Jan (advisor) ; Bestová, Helena (referee)
The genus Micrasterias comprises one of the most beautiful organisms. It attracts, due to its spectacularly shaped cells, the attention of scientist and amateur biologist almost for almost 200 years. This thesis summarizes the current knowledge about these extraordinary organisms. The first part deals with the morphology and the life cycle of these algae. They share a unique type of reproduction (conjugation) with the other representatives of the class Zygnematophyceae. The second part concerns phylogeny of this genus. Several morphologically distinct species have been revealed with the aid of molecular phylogenetic methods to belong to the genus Micrasterias. A polyphasic evaluation of three species complexes within this genus also revealed an extensive hidden diversity. The last chapters summarize the knowledge about the influence of hidden diversity and accelerated morphological evolution on our understanding of diversity and biogeography of these organisms.
|
|
|
Synchronization and practical use of isokinetic dynamometer with surface electromyography unit
Špaková, Adriána ; Hanák, Petr (referee) ; Šťastný, Jan (advisor)
The bachelor's thesis deals with a design proposal for the solution of synchronization of an isokinetic dynamometer with a surface electromyography unit, and subsequently performs the realization of their synchronization. These devices are used as diagnostic and therapeutic medical technique and in practice are standardly used separately. It is expected that by using them simultaneously would be possible to obtain more detailed information about the condition of the examined individual. Synchronized devices can thus be useful, for example, for the analysis of muscle performance of patients with neuromuscular diseases or athletes who want to improve their quality of life after suffering an injury or plan comeback to their favourite activity. After successful synchronization, the work is focused on testing the muscle activity of flexors and extensors of the knee joint of athletes. Measurements were performed on healthy subjects as well as those who had suffered knee injuries in the past. The measured signals were processed, and the measurement results were interpreted. The work includes the elaboration of all the goals based on its assignment, including the main idea of the work, what is the successful synchronization of the isokinetic dynamometer with the surface electromyography unit and their practical use.
|
|
|
Fire station type P4, Chrudim
Šťastný, Jan ; Kacálková, Lenka (referee) ; Kacálek, Petr (advisor)
This diploma thesis deals with the project documentation for the construction of a new building of the fire station type P4 in Chrudim. The building is located on land lot No. 2412/7 and 2412/8, in the cadastral area of Chrudim. The house is divided into two parts; an administrative part with a room for firefighters and a garage, which contains the complete technical facilities of the station. The fire station is situated in the existing housing development of the town Chrudim, specifically in part Chrudim II. The administrative part of the building has two floors. On the ground floor, there are individual offices and a gym, including technical facilities. On the first floor, there are rooms for firefighters and rooms for their daily services. Next to the land lot, there is a local road of type III. The house is designed to respect the municipality’s territorial plan and the surrounding built-up area. The project documentation is elaborated in compliance with current building legislation, regulations, and standards. The house‘s profile is irregular, and the building has two flat roofs and a span roof. The system of construction is made of bricks and colomns. The building is situated on slightly sloping terrain.
|
guest ::
