|
Freedom to contract and its restriction in business obligations
Nedvěd, Filip ; Plíva, Stanislav (advisor) ; Rozehnal, Aleš (referee)
Every law in the Czech legal system regulates social relations. This adjustment serves to protect and determine values in society. Important role in this process hold the basic legal principles. Private law is no exception. Probably the most important principle of private law is the principle of autonomy of will. Its expression in the law of business oblagations is the principle of contractual freedom, which is the main theme of this work. The principle of freedom to contract is quite crucial for the functioning of the modern principle of contract law, which regulates relations arising in a market economy. The aim of this work is to describe the principle of freedom to contract and its manifestation in the legal standards, which governs business obligations. Finally, this work discusses restrictions of freedom to contract, since it is clear that this can not be applied without some correctives. Keywords: contractual freedom restrictions of contractual freedom commercial contractual relations
|
|
Phytoextraction of non-steroidal analgetics
Bažilová, Blanka ; Smrček, Stanislav (advisor) ; Zedník, Jiří (referee)
In present time environment is considarably contaminated by various diversed polutants mainly because of human activity. Part of this dissertation deals with problem of contaminents spreading into environment. Further more it summarizes particular options of xenobiotics removal from waste and subterraneous waters and it mostly focuses on new inovative methods decontamination methods of polluted areas based on vegetative biotechnologies. This study comprises knowledge about plants abilities and usage by transformation and degradation of nonsteroid analgesics, which belong to most common and mass used drugs. Goal of dissertation was to observe fate and transport in present time used nonsteroid analgesics and fytoextraction efficiency evaluation of such a substances from liquid nutrient medium with sunflower and corn. For determination of chosen nonsteroid analgesics (piroxicam, nimesulid, ketoprofen a paracetamol) was developed and optimalized analytical procedure which consisted of extraction and determination by HPLC-MS method. Results indicate that studied nonsteroid analgesics are very good extracted by plants. Biggest phytoremediation potential was proved for ketoprofen, which was consumed by plants more than other nonsteroid analgesics.
|
|
Ochrana zaměstnanců před důlními otřesy v dlouhých důlních dílech a stanovení opatření při zjištění nebezpečných stavů při vedení a provozu důlních děl s cílem zabránit vzniku otřesu. Projekt č. 44-06. Dílčí zpráva o výsledcích řešení etapy č. 5
Konečný, Petr ; Ptáček, Jiří ; Šňupárek, Richard ; Velička, Vilém ; Zeman, Vladislav ; Bonczek, Č. ; Dvorský, P. ; Holečko, J. ; Koníček, P. ; Przeczek, A. ; Stoniš, M.
Řešení projektu se týká ražeb chodeb a úvodních prorážek pro přípravu nových porubních bloků. Snahou je nalézt nové způsoby preventivních opatření, které by v nich omezily na nejmenší možnou míru riziko otřesů. Kromě toho se v projektu řeší problematika zpřesnění lokace seismických jevů a rovněž zkoumá možnost použití vývrtů po trhací práci pro tlakové zavlažování v rámci protiotřesové prevence.
|
|
Role of evaporation in the hydrological balance of small catchment
Šereš, Michal ; Kliment, Zdeněk (advisor) ; Matějíček, Luboš (referee)
CHARLES UNIVERSITY IN PRAGUE FACULTY OF SCIENCE INSTITUTE FOR ENVIRONMENTAL STUDIES ROLE OF EVAPORATION IN THE HYDROLOGICAL BALANCE OF SMALL CATCHEMENT bachelor thesis - MICHAL ERE Abstract This bachelor thesis called Role of evaporation in the hydrological balance of small catchment uses the measured data from an experimental drainage basins Zbytiny in the source area of Blanice in umava mountains. Its aim is to find appropriate ways of calculating a more accurate determination of the proportion of evapotranspiration for water balance of small watersheds with different land use cover.
|
|
Analytical Chemistry in secondary grammar school
Součková, Danuše ; Jelínek, Ivan (advisor) ; Richtr, Václav (referee) ; Schwarzová, Karolina (referee)
Mgr. Danuše Součková: Analytical chemistry in secondary grammar school. Summary of Ph.D.Thesis Charles University in Prague, Faculty of Science, Department of Teaching and Didactics of Chemistry At the end of my thesis about the importace of chemical experiments in chemical education and especially about the importace of analytic chemistry in secondary grammar schools I'd like to summarize the most important ideas from particular chapters. I think that the objects I have determined at the beginnig, have been filled and my work will help to perceive analytic chemistry as an integral part of chemistry education in secondary grammar schools. I have emphasized importace of chemical experiment and its use in analytical chemistry education. I have pointed a possibility of working relation among school subjects and a possibility of putting several cross-sectional topics into analytic chemistry education. Other object was to check students' knowledge. I have also intent on particular experiments and I have dividend them into several groups and I have prepared them to be put just into lessons by teachers and some notices and solutions are added. I have described the work during the experimental lessons, the equipment for them, specific matter of analytical chemistry. When we understand the function and...
|
|
Determination of Selected Active Substance in the Preparation VII.
Šalamounová, Anna ; Kastner, Petr (advisor) ; Mokrý, Milan (referee)
Determination of Selected Active Substance in the Preparation VII Thesis Anna Šalamounová Charles University in Prague, Faculty of Pharmacy in Hradec Králové, Department of Pharmaceutical Chemistry and Drug Control Suitable HPLC methods for the determination of cinchocaine and for the determination of purity of dexamethasone in liquid pharmaceutical preparation were searched. The monolithic column Chromolith Speed ROD RP-18e 50-4.6 was used. A mixture of water:acetonitrile; 50:50; 1,575 ml of triethylamine in 250 ml of water; was chosen as the mobile phase for cinchocaine hydrochloride; pH of the mobile phase was adjusted to 7.0 by orthophosphoric acid. Flow rate was 3 ml/min, column temperature 25 žC, injected volume 5 µl and UV detection at 325 nm. Linearity, specificity, precision and accuracy were tested under these conditions. For purity of dexamethasone gradient elution was chosen. Mobile phase A: water, acetonitrile (80:20) and mobile phase B in the rate of 93:7; pH of the mobile phase was adjusted to 7.0 by orthophosphoric acid. Mobile phase B: water, acetonitrile (75:25); 1,05 ml triethylamine in 250 ml water; pH of the mobile phase was adjusted to 7.0 by orthophosphoric acid. Flow rate was 4 ml/min, column temperature 25 žC, injected volume 50 µl and UV detection at 238 nm. The method was...
|
|
Evaluation of properties of new HILIC stationary phases for pteridins using UHPLC-FD method
Kaufmannová, Iva ; Nováková, Lucie (advisor) ; Šatínský, Dalibor (referee)
Charles University in Prague, Faculty of Pharmacy in Hradec Králové Department of analytical chemistry Candidate: Iva Kaufmannová Supervisor: PharmDr. Lucie Nováková, Ph.D. Title of Doctoral Thesis: Evaluation of properties of new HILIC stationary phases for pteridins using UHPLC-FD method The subject of this thesis was to evaluate the characteristics of three new types of HILIC stationary phases for the identification and quantification of biologically active substances biopterin, neopterin, dihydrobiopterin and dihydroneopterin by UHPLC with fluorescence detection. Neopterin is used as a marker of immune system activation and inflammatory diseases. Its early detection in urine or plasma may indicate a pathological immune activity. Elevated concentration of neopterin is described in viral or bacterial diseases, in autoimmune diseases in HIV infection or in malignant tumors. 7,8 - dihydroneopterin is able to prevent proteins and lipoproteins from oxidative damage. Hydrophilic Interaction Liquid Chromatography (HILIC) is a chromatographic method that can be used to improve retention of very polar compounds. It uses a polar stationary phase and mobile phase containing a certain amount of water and polar solvents. UHPLC is the most advanced separation technology to develop a pressure of about 100 MPa....
|
|
Impedimetric contactless detection of compounds in gas phase
Pavlíček, Václav ; Opekar, František (advisor) ; Štulík, Karel (referee)
Simple and sensitive detector based on contactless impedance detection has been tested. The detection cell consists of two insulated wire electrodes placed in a PTFE tube through which the test vapour phase flows. It has been found that the detector is sufficiently sensitive and reliable for determinations of common concentrations of water vapour in the air. Qualitative tests indicate that the vapour of organic solvents can also be monitored. This is the first application of contactless impedance detection of compounds in the gaseous phase based on a new instrumental approach to impedance detection. Keywords: Impedance detection, Contactless impedance detector, Vapour phase, Relative humidity, Organic solvent vapour
|
|
Porphyrazine film for use in electrochemical sensor
Merhoutová, Jana ; Nesměrák, Karel (advisor) ; Ludvík, Jiří (referee)
Porphyrazine film for use in electrochemical sensor Abstract: A water soluble N,N',N'',N'''-tetramethyltetra-3,4-pyridinoporphyrazine complex containing cobalt cation (II) as a central atom was used like a mediator for preparation of electrochemical sensor. Such effects on a sensor function like an electrode carrier material, the manner of porphyrazine deposition, pH and thickness of the layer, were studied by cyclic voltammetry method. The sensor was tested for hydrogen detection in water buffer solution consequently.
|
| |
guest ::
