National Repository of Grey Literature 61 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Metabolic effects of bile lipids
Žížalová, Kateřina ; Leníček, Martin (advisor) ; Jirsa, Milan (referee) ; Dvořák, Karel (referee)
Bile acids act as important fat emulsifiers in the human body. However, it is increasingly becoming apparent that they also play a role as important signalling molecules. Bile acids are a relatively heterogeneous group differing also in their metabolic effects. Their individual proportion in the body is highly variable and strongly influenced by the composition of the microbiome. The importance of individual bile acids is not yet well enough described to be fully exploited in clinical practice. For this reason, the determination of bile acids by enzymatic methods seems to be considered sufficient in most departments. Another and more reliable option is the increasingly widespread use of liquid chromatography-tandem mass spectrometry (LC-MS/MS). The aim of my work was to test the reliability of the enzymatic method and to introduce a method for the determination of bile acids, including the measurement of such atypical ones for example microbial conjugates and keto- and isoderivatives. Moreover, I aimed to test sample preparation for the measurement of 7α-hydroxy-4-cholesten-3-one, the bile acid biosynthesis marker. We used these methods to investigate the changes in bile acid composition changes in iron overload rats. In this rat model of genetically determined disorders of iron metabolism, bile...
Healthy lifestyle parameters assessment in patients with type 2 diabetes mallitus and fatty liver
Halámková, Veronika ; Dvořák, Karel (advisor) ; Šmíd, Václav (referee)
This bachelor thesis assessed several parameters of healthy lifestyle and potential liver steatosis presence in patients with diabetes mellitus type 2. In the first part there are descriptions of liver, pancreas, diabetes mellitus type 2, metabolic syndrome, and non-alcoholic fatty liver disease (NAFLD). Further there is a characterisation of Mediterranean diet with its main features and health effects. Practical part is dealing with a questionnaire survey in patients with diabetes mellitus type 2 referred to abdominal ultrasound examination. There were 19 questions focused on healthy lifestyle (consummation of vegetables, fruits, fish, use of olive oil, drinking tea or coffee, eating of sweets, and drinking of alcohol) and questions assessing knowledge of the Mediterranean diet, physical activity, duration of diabetes, family history of diseases of affluence and hepatoprotective medication use. Age, gender and basic anthropometric data and result of sonographic examination for presence of liver steatosis were recorded. A total of 92 patients (71 men / 21 women) average age 65 years. Liver steatosis was diagnosed in 88% of patients. Knowledge of the Mediterranean diet was low (20% of respondents). Healthy lifestyle adherence was according to provided answers also unsatisfactory, despite the fact,...
Study of Parameters of Preparation and Stabilization of Belite
Kohutová, Alice ; Dvořák, Karel (referee) ; Gazdič, Dominik (advisor)
The presented bachelor thesis is focused on monitoring the behavior of the mineral belite at high temperatures. The theoretical part deals with the study theories regarding the preparation and stabilization of C2S and its use in low-energy cements. The practical part is processed in the form of research of scientific articles dealing with the above mentioned topic and the results achieved at FAST BUT, THD. Based on previous research, there is introduced design and optimization of the methodology of preparation of polymorph ß-C2S, followed by analysis of its purity and stability. Part of the thesis is HT-XRD analysis, which allows monitoring of transformations during the burning of belite clinker in a high temperature chamber.
Preparation and study of Alite
Jančíků, Andrea ; Gazdič, Dominik (referee) ; Dvořák, Karel (advisor)
The bachelor thesis deals with the preparation of the main clinker mineral tricalciumsilicate (Alitu-C3S), mostly theoretically and partially practically. The theoretical part summarizes the main findings of recent years of research of polymorphic phases of this mineral. The practical part is devoted to the preparation of polymorphic phase of M1 alite. The main objective was to prepare the monoclinic phase of M1 and analyze their properties by available analytical methods.
Possibilities of classical fly ash utilization after denitrification of flue gas
Snop, Roman ; Dvořák, Karel (referee) ; Bílek, Vlastimil (referee) ; Havlica, Jaromír (advisor)
This doctoral thesis, "Possibilities of using conventional fly ash after flue gas denitrification", deals with the solution and processing of data on the issue of ammonia / contaminated fly ash after selective non-catalytic reduction (SNCR) technology in coal-fired power plants. Also this thesis is focused on experimental verification of the effect of ammonium salts on the properties of fly ash and the effect on the working environment. Basic data on the issue of ammonia ash were collected. Specifically, these are several main areas of research. The binding of ammonia in fly ash produced after SNCR is described, the problem of determination of ammonium ions in fly ash, mortars and concretes is solved. Furthermore, the effects of the use of ammonia fly ash on the properties of concrete are experimentally verified, and the work also deals with the leachability of ammonia fly ash
Study of the internal excitation of anhydrite
Kantorová, Kateřina ; Gazdič, Dominik (referee) ; Dvořák, Karel (advisor)
The presented diploma thesis deals with the possibilities of internal excitation of anhydrite mortars. It is divided into a theoretical part, in which the general distribution of sulfate binders is described, focusing primarily on anhydrite, stimulators, and hydration of anhydrite, and a practical part, which is devoted to research, design of the experiment, dosage of stimulators, firings, and the experiment itself. The practical part describes the current research on anhydrite excitation, which took place at the Institute of technology of building materials and components. The diploma thesis follows on from the previous bachelor's thesis. It continues with two internal drivers, which optimize the fineness of grinding and the degree of firing at the same time.
Study of the process of dehydration of gypsum in acid solutions
Zájeda, Lukáš ; Moldrzyk, Jan (referee) ; Dvořák, Karel (advisor)
The diploma thesis deals with the production of alpha gypsum by the non-pressure method in a solution of concentrated H2SO4. The theoretical part summarizes the present knowledge of the non-pressure method of alpha gypsum. In the practical part there is performed reproducibility of achieved results and optimization of apparatus with verification of functionality.
Study of Alit structure and stability
Pernicová, Kateřina ; Všianský,, Dalibor (referee) ; Dvořák, Karel (advisor)
The diploma thesis deals with the laboratory preparation of the main clinker mineral alite. The theoretical part summarizes the main findings of recent research. The practical part is devoted to the preparation and optimization of the methodology for the preparation of alite polymorph. The main goal was to prepare monoclinic phases of M1 and M3 alites and analyze their properties by available analytical methods.
Study of limestone decarbonation process
Koporcová, Diana Mária ; Bureš,, Jaroslav (referee) ; Dvořák, Karel (advisor)
Submitted master´s thesis examines research of connections between the type of limestone and the process of decarbonation. Types of limestones and genesis of limestones are described in the theoretical part of the thesis, followed by the description of the process of decarbonation, methods used for analysis of limestone structure and research of solved problems. Experimental part of the thesis describes HT-XRD analysis, SEM analysis and simultaneous TG/DTA analysis performed on chosen group of limestone samples. The process of decarbonation and the change of microstructure of the developing calcium oxide are examined from the obtained data.

National Repository of Grey Literature : 61 records found   1 - 10nextend  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.