National Repository of Grey Literature 9 records found  Search took 0.00 seconds. 
Some aggressive rock environment in the area of Prague, the groundwater and the associated protection of building structures
Štěpán, Jiří ; Král, Jan (advisor) ; Chaloupka, David (referee)
This master thesis deals with groundwater aggressiveness on one sheet of detailed engineering geology map of Prague 1:5000, sheet Praha 2-3. The aim of this thesis si an effort to verify how much geological environment participates in chemical composition of groundwater. The chemical analyses were evaluated using limit values stated in valid norm ČSN EN 206 Concrete - Specification, performance, production and conformity. The chemical analyses that analysed aggressive components (SO4 2- , CO2, pH, NH4 + , Mg2+ ) and total dissolved solids discovered that the geological environment affects the chemical composition of groundwater very strongly. The chemical composition of groundwater is influenced by groundwater velocity and therefore by the time which the water stays in contact with the geological environment, by local composition of the rock and its accessories especially pyrite. Groundwater in Ordovician formations in the area of interest is usually contains high amount of dissolved solids and it is calcium-sulphate. Groundwater of Dobrotiv and Libeň formations are significantly less aggressive than groundwater of Letná, Vinice and Zahořany formation. The chemical composition of groundwater in Peruc-Korycany formation corresponds with Letná formation on which it lies.
Feral Pigeon (Columba livia f. domestica) Census in Selected Sites of Prague
Bukačová, Kateřina ; Řezníček, Jan (advisor) ; Štěpán, Jiří (referee)
This thesis deals with the monitoring of numerous rate of domestic pigeon (Columba livia f. Domestica, hereinafter referred to as pigeon) in a given area and its spatial activity. The work includes incidence monitoring of individual pigeons depending on daytime and weather. The monitoring was carried out by observational method in the period from February to May 2015. The observations were related to individuals who occurred the monitored area (the buildings in Dukelských hrdinů street). Furthermore, the work compares the results from population census of Prague pigeon and the results from census of other European cities. It was further investigated whether the amount of pigeons in the area is affected by abiotic conditions (air temperature and weather). The result of the thesis should contribute to better knowledge of overall pigeon rate determining in the capital city of Prague. The collected data may help to gain a deeper knowledge of the entire population ecology living in this territory. They can also be beneficial, for example, in reducing of the pigeon numbers or serve in other investigations. Key words: pigeon, Domestic Pigeons (Columba livia f. domestica), abundance, monitoring, abiotic conditions, population
Bird and Mammal Taxidermy
Tuzová, Lucie ; Řezníček, Jan (advisor) ; Štěpán, Jiří (referee)
This thesis deals with the preparation of dermoplastic materials of birds and mammals. They are described in detail specific methods of preparation from the collection of material to its final treatment. The first section summarizes the theoretical knowledge concerning preparation of dermoplastic models and osteological material. The second part is dedicated to knowledge survey of high school and primary school students concerning recognition of birds and mammals dermoplastic models. The results are processed by descriptive statistics. Keywords: taxidermy, dermoplastic models and osteological material, skulls, teeth, birds, mammals.
In Vitro Study of Interactions of Radiolabeled Monoclonal Antibodies with Epidermal Growth Factor Receptor.
Nový, Zbyněk ; Trejtnar, František (advisor) ; Komárek, Pavel (referee) ; Štěpán, Jiří (referee)
Charles University in Prague, Faculty of Pharmacy in Hradec Kralove Department: Department of Pharmacology and Toxicology Candidate: Zbynek Novy, MSc. Supervisor: Assoc. prof. PharmDr. Frantisek Trejtnar, PhD. Title of doctoral thesis: In vitro study of interactions of radiolabeled monoclonal antibodies with epidermal growth factor receptor Various types of cancer are characterized by overexpression of epidermal growth factor receptor (EGFR) compared to normal tissue. Anti-EGFR antibodies utilize this phenomenon to treat certain oncological diseases. Intensively studied field is verifing of possibility to increase usability of these antibodies by incorporating suitable radionuclides into thiers structures, results can serve in radioimmunodiagnosis or radioimmunotherapy of mentioned malignities. Despite the fact that EGFR recepor and his signaling intracelluar pahtway is object of intense research, there is a lack of knowledge in the area of factors, which can significantly affect binding of radiolabeled antibodies to EGFR in vitro. The aim of this doctoral thesis was to introduce method of radiolabeling anti-EGFR monoclonal antibodies (cetuximab, panitumumab) with iodine-131 and to use this radiolabeled antibodies to determine expression rate of EGFR in four selected cell lines (A431, HaCaT, HCT116...
Census of the Feral Pigeon (Columba livia f. domestica) Population in the Selected Localities and Flying Corridor of the Radlické Valley in Prague
Štěpán, Jiří ; Řezníček, Jan (advisor) ; Plesník, Jan (referee)
Census of the feral pigeon (Columba livia f. domestica) population in the selected localities and flying through the corridor of the Radlické valley in Prague. The diploma thesis is dealing with the research of the number of the pigeons (Columba livia f. domestica) flying through the corridor of the Radlické údolí, with the exploration of the next pigeons' flying routes, with inventorying of the number of pigeons in the localities Smíchovské nádraží and Na Knížecí and with dependece of the number of pigeons on the abiotical conditions, season, day time and the time of the spring seeding and harvest. The food ecology of pigeons was also investigated within the process of inventorying in the locality Na Knížecí. The final chapter is focused on coloring of the individuals in the different Prague localities. The research was realised from July 2012 to November 2013. The folowing methods of research were used: observation, marking with the wing tapes, modified linear method of addition. The results of the diploma thesis indicate that number of pigeons in the observed localities change especially in the time of seeding and harvest. Numerical fluctuations are not so extreme because the group of the resident pigeons always stays in the city. The spectrum of the food offered by local inhabitants doesn't...
Groundwater aggression and the impact of geological environment
Štěpán, Jiří ; Král, Jan (advisor) ; Malát, Richard (referee)
This bachelor thesis deals with groundwater aggressiveness on two sheets of detailed engineering geology maps of Prague 1:5000. The aim of this thesis is an effort to verify how much geological environment of inner Prague participates in chemical composition of groundwater. The chemical analysis were evaluated using limit values stated in valid norm ČSN EN 206 Concrete - Specification, performance, production and conformity. The chemical analysis that analyzed aggressive components (SO4 2- , CO2 a pH) and total dissolved solids discovered that the geological environment affect the chemical composition of groundwater very strongly. Groundwater in Ordovician shale commonly contains high amount of dissolved solids with a lot of sulphate. In geological environment containing quartzite, greywacke, quartz and greywacke sandstone the groundwater has small amount of dissolved solids and no aggressive component is dominant as well as too high compared to the shale.
Polarized Radiative Transfer in Solar Atmosphere
Štěpán, Jiří ; Heinzel, Petr (advisor) ; Degĺ Innocenti, Egidio Landi (referee) ; Bueno, Javier Trujillo (referee)
The adequate theoretical models of the NLTE radiative transfer are needed for interpretation of the complicated spectra emerging from the magnetized solar atmosphere. In the first part of the thesis, the quantum theory of polarization is reviewed along with the problem of NLTE radiative transfer of the 2nd kind. A general notation for a numerical treatment of the atomic density matrix is introduced. A lambda-operator splitting technique is presented and used for development of a novel preconditioning method analogous to the Jacobi iteration algorithm. Number of processes is taken into account: atomic polarization, level-crossings, Paschen-Back effect, Hanle and Zeeman effects, optical pumping, collisional (de)polarization. A nonlinear multigrid technique is developed in the framework of polarized radiative transfer theory and the eficiency of the method is discussed. The potential of this new solver is demonstrated on an example of transfer of the optically thick line of a multiterm atom in the Paschen-Back effect regime. In the second part of the thesis, the particular problem of impact polarization of the hydrogen H-alpha line in solar flares is considered. The semi-empirical models of the flaring chromosphere are used to find the differential effects of the proton beam on the line intensity and linear...

See also: similar author names
8 Štěpán, Jakub
1 Štěpán, Jakub Bs.
17 Štěpán, Jan
2 Štěpán, Jaroslav
1 Štěpán, Josef
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