The task of this thesis is to study methods for the acquisition perfusní imaging based on dynamic MR imaging with T1 contrast. It describes methods of measurement of T1 relaxation time and the possibility of evaluating the results. It further describes the phantoms and their use. And it is here mentioned for the dynamic acquisition protocol perfusní imaging. There is also described in detail created a program for automatic control of the NMR system. In the experimental measurements are performed on static and dynamic phantom, are also evaluated perfusion parameters from the Flash sequence.

The thesis includes the basic principles of lead-acid, NiCd, NiMH and Li-Ion batteries. There is a description of their features and phenomena that processes in the batteries during charging and discharging. The most important part is devoted to dynamic models of these types of batteries, the parameters that are necessary for their modeling, and testing of absolute error models. Further, the model in Matlab was created which allows the simulation of the GRID-OFF photovoltaic system using the battery model.

Pavel BÉM Optimisation of Gear Ratio for Race Cars DW, IAE, 2008, pp. 62, fig. 69. At first I labellig problems about gearboxes than, I review dataloggers for racing cars using now. I create model of dynamic simulating car move during at akcelerating and decelerating on choice track. I create program analyzating data from telemetry and applicated dynamic model to optimisation gears ratio.

Humic acids are part of the natural organic matter occurring all around us. The aim of this thesis is to study the molecular organization, conformation of humic acids in aqueous solutions, that always raise a number of questions. For a long time, the scientists all over the world argue, if humic acid are polymers, micelles or supramolecules. Over time, thanks to new technologies, their opinions are moving away from a polymer model and tend rather to supramolecular arrangement of humic acids. Studying humic complex systems is not easy, because they are polydisperse and heterogeneous, which significantly complicates any characterization. Moreover, its molecular organization is affected by many factors such as e.g. pH, ionic strength and etc. For the study of the conformation of humic acids, concentration series of IHSS (International humic substances asociation) Leonardite humic acids stamdards in four different mediums were prepared: 0,1 M NaOH, humic acids in water with pH modified to 12 (basic medium), 0,1 M NaOH + 0,1 M HCl, 0,1 M NaCl (neutral environment). Furthermore it has been performed the fractionation of humic acids for the purpose of simplifying the complicated structure. Prepared concentration series were characterized with several analytical methods such as ultraviolet and visible spectroscopy, dynamic light scattering, electrophoretic light scattering, microrheology, gel permeation chromatography, potentiometric pH determination and direct conductometry. Diploma thesis is built on the previous bachelor thesis in which different sample of humic acids was studied. The measured results indicate that the studied systems show supramolecular behavior and in some cases are subject to aggregation into larger units (micelles).

This master thesis is focused on the evaluation of the influence of particle surface properties on the results of microrheological measurements with biopolymer solutions. Hyaluronan has been chosen as negatively charged polymer, chitosan as positively charged polymer and glycerol and its solutions of various concentrations were used as homogenous model systems. Dynamic light scattering and single particle tracking microrheology were chosen from passive microrheological techniques. Particles with various surface modifications (neutral, positive surface charge and negative surface charge) were used for the experiments. The results of microrheological techniques were then compared with classic rheology and moreover the glycerol results were compared with tabulated values.

Diploma thesis main goal is to obtain new pieces of knowledge about relationship between hydrogel structures and its flow and transport properties. Thesis is mainly focusing on combining pertinent biopolymers into model hydrogels based on agarose. Then perform correlation of results obtained by diffusion methods, and by rheologic measurements on macroscopic and microscopic level. Properties of hydrogels were measured by selected rheologic measurements, dynamic light scattering method, and correlative fluorescence spectroscopy. From these methods various parameters (MSD modules, values of complex viscosity) were obtained. Afterwards transport properties of prepared hydrogels were studied by observing Rhodamine 6G diffusion. Here two different approaches were used. From macroscopic perspective, simple principles of mass diffusion from dye solution to cuvettes filled with hydrogels containing individual biopolymers were used. From microscopic perspective, dye was added during the sample preparation and then the mass diffusion was investigated using FCS. Based on evaluated results it was discovered that added biopolymers don’t influence properties of carrier medium, in this case agarose hydrogels. During the study of prepared hydrogels’ reactivity and barrier properties some differences were observed. Charge of biopolymer and its charge density were discovered as main factors influencing transport of charged solutes into prepared hydrogels.

The diploma thesis deals with the influence of technological parameters on the emulsion copolymerization of methyl methacrylate with n butyl acrylate. The theoretical part contains knowledge in the field of influences of proces tempereture, concentration of initiator, concentration of emulsifier, stirring rate and dose rate on emulsion polymerization. In the experimental part was observed effect of the concentration of the ionic emulsifier, nonionic emulsifier, furthemore was observed effect of stirring speed and the concentration of initiator K2S2O8 on conversion of copolymerization. During all copolymerizations, conversions was determinated via solids content evaluation. By dynamic light scattering was determinated and presented polymer particle size of the prepared emulsions. Stability of emuldions was observed via effect of different ionic strenght and yield of freeze thaw cycles coalescence. Based on experimental results were proposed conditions of polyacrylic lattex preparation.

Title: Acute effect of a warm-up on the force of a punch Objectives: The aim of this diploma thesis is to test whether a warm-up before a performance affects the force of a punch at a sample participants practicing full-contact combat sports. Further goal is to analyze a change in the force of a punch depending on elapsed time after warming up. Methods: Each participant in this experimental study with intra-subject design went through all phases of the measurement, where the force of a punch was tested in four specified times (before a warm-up and then 4, 10 and 25 minutes after the warm-up). Results: No statistically significant effect of a warm-up on the force of a punch was observed, nor was there a statistically significant change in the force of a punch during the time following a warm-up. However, a warm-up did have a significant effect on change in heart rate and body temperature. Keywords: Combat sports, performance, fight, dynamic stretching, explosive power, punch sensor

6 ABSTRACT Tittle: Effect of Static and Dynamic Stretching on the Performance of Cadet Category in Competitive Aerobics Objectives: The aim of the work is to find out the type, method and use of static and dynamic stretching in the training of cadet girls in the training of sports aerobics through the opinions of competitive aerobics coaches. The theoretical part consists of research on the issue. In the practical part, a questionnaire survey and an interview are used, conducted in person by the author of the diploma thesis or sent by e-mail, or conducted by telephone or otherwise online. The outputs from this questionnaire + interview are analyzed, compared and evaluated with specific clear outputs. Methods: The work consists of a theoretical and a practical part, while the theoretical part is conceived descriptively. The research part uses the method of qualitative research - a questionnaire. Competitive aerobics coaches are interviewed through a questionnaire and in the form of a guided interview. The interview is conducted in person, according to the prepared questions, and the answers are then logically sorted, evaluated and commented. Descriptive statistics are used for the actual classification and analysis of the obtained data. Results: The results of the work showed the type, method and use of...

This thesis focuses on the development of credit to the private sector in the Central and Eastern European (CEE) countries. Although the speed of credit growth in these countries has recently slowed down as the consequence of the global financial crisis, the overall increase in credit to the private sector over the past decades has been immense. As a result, the thesis examines whether this substantial increase in credit is linked to the convergence of the CEE countries towards the equilibrium or whether it represents an excessive credit growth that could threaten the macroeconomic and financial stability in these countries. We estimate the equilibrium credit levels for 11 transition countries by applying a dynamic panel data model. Since in-sample approach may bias the estimation results we perform the estimates out-of-sample using a panel of selected developed EU countries as a benchmark. The difference between the actual and estimated credit-to-GDP ratios serves as a measure of private credit excessiveness. The results indicate a slightly excessive or close to the equilibrium credit-to-GDP ratios in Bulgaria, Estonia, and Latvia prior to the financial crisis. With regard to the significant decline in GDP during the crisis this measure of credit excessiveness in these countries have further increased.