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Stroje a strojní linky pro aplikaci fermentačního zbytku
Vondráček, Jan
The thesis deals with the topic of Machines and Machine Lines for the Application of Fermentation Residues in the theoretical part about the current trends in the application and handling of the fermentation residue, summarizes the input and output raw materials of BPS and related legislation. In addition, it deals in more detail with various variants of applicators and additional machines used for the application of solid and liquid fermentation residues. In the practical part the thesis is devoted to the evaluation of field - laboratory measurements oriented to the detection of nitrogen utilization from applied fermentation residues by plants. The final part is devoted to evaluating and optimizing the use of the method for practice.
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Canonical and non-canonical signalling triggered by activated TRAIL receptors in human cells
Nahácka, Zuzana ; Anděra, Ladislav (advisor) ; Rudolf, Emil (referee) ; Vondráček, Jan (referee)
TRAIL ligand can trigger apoptosis of permissive human cells via engagement of its two pro- apoptotic receptors TRAIL-R1 (DR4) and TRAIL-R2 (DR5). Its ability to induce apoptosis independently on p53 status and to selectively kill cancer cells in vitro and in vivo made this ligand an attractive target in cancer research. However, acquired resistance of primary cancer cells, unsatisfactory outcome of clinical trials and recent studies arguing that TRAIL might under specific conditions promote cancer progression, opened new plethora of questions, which need to be addressed. Though both receptors DR4 and DR5 are ubiquitously expressed, different types of tumours show preference for either of the receptors. The relative participation of DR4 and DR5 in TRAIL- induced signalling is still largely unknown. To analyse TRAIL receptor-specific signalling, I prepared Strep-tagged, trimerised variants of recombinant human TRAIL ligands with high affinity for either DR4 or DR5 receptor. Using these receptor-specific ligands, I examined a contribution of individual pro-apoptotic receptors to TRAIL-induced signalling pathways. I found that in TRAIL resistant colorectal HT-29 cells but not in pancreatic PANC-1 cancer cells, DISC formation and initial caspase-8 processing proceeded comparably in both DR4- and...
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Vyhodnocení systému Isaria Crop Sensor v podmínkách konkrétního podniku
VONDRÁČEK, Jan
The diplom thesis presents some elements of precision agriculture and their possible use. The thesis focuses on using the elements of precision farming in practice. In the practical part, the work is focused on the practical use of the sensor system Isaria Crop sensor N in the conditions of the agricultural company Kooprodukt Lišov a.s.
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New aspects of pregnane X receptor function and regulation
Hyršová, Lucie ; Trejtnar, František (advisor) ; Skálová, Lenka (referee) ; Vondráček, Jan (referee)
Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Candidate: Lucie Hyršová, MSc. First Supervisor: doc. PharmDr. František Trejtnar, CSc. Consultant: prof. PharmDr. Petr Pávek, PhD. Title of Dissertation Thesis: New aspects of pregnane X receptor function and regulation The pregnane X receptor belongs to the superfamily of nuclear receptors; it is a ligand dependent transcription factor regulating expression of its target genes. During last two decades, PXR was extensively studied as a xenosensor, i.e. the receptor, which is able to bind xenobiotics including many drugs and to regulate their metabolism by induction of the most important metabolizing enzymes of both phase I. and phase II. Induction, i.e. transcriptional stimulation of expression of the most important cytochrome P450 enzymes, by PXR ligands was described in details at many levels. Within this dissertation thesis, I am dealing with aspects of regulation via PXR, which extend the common understanding of PXR as a receptor whose exclusive function is to up-regulate drug metabolizing enzymes mediated by its agonists. Within the first, project I studied regulation of OCT1 transporter in hepatic cell models, I shown that PXR did not induce, but it rather suppressed the expression of this...
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New aspects of pregnane X receptor function and regulation
Hyršová, Lucie ; Trejtnar, František (advisor) ; Skálová, Lenka (referee) ; Vondráček, Jan (referee)
Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Candidate: Lucie Hyršová, MSc. First Supervisor: doc. PharmDr. František Trejtnar, CSc. Consultant: prof. PharmDr. Petr Pávek, PhD. Title of Dissertation Thesis: New aspects of pregnane X receptor function and regulation The pregnane X receptor belongs to the superfamily of nuclear receptors; it is a ligand dependent transcription factor regulating expression of its target genes. During last two decades, PXR was extensively studied as a xenosensor, i.e. the receptor, which is able to bind xenobiotics including many drugs and to regulate their metabolism by induction of the most important metabolizing enzymes of both phase I. and phase II. Induction, i.e. transcriptional stimulation of expression of the most important cytochrome P450 enzymes, by PXR ligands was described in details at many levels. Within this dissertation thesis, I am dealing with aspects of regulation via PXR, which extend the common understanding of PXR as a receptor whose exclusive function is to up-regulate drug metabolizing enzymes mediated by its agonists. Within the first, project I studied regulation of OCT1 transporter in hepatic cell models, I shown that PXR did not induce, but it rather suppressed the expression of this...
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Strategic analysis of company Termo Děčín a.s.
Vondráček, Jan ; Sieber, Martina (advisor)
This bachelor thesis deals with strategic analysis of the company Termo Děčín a.s. The thesis is divided into two parts (theoretical and practical). The author defines the theoretical part by using the basic concepts from the literature listed. The practical part parallels the theoretical part where the author applies theoretical knowledge in practical part. It is an analysis of the company both internally and externally. These findings are from a financial analysis which provides the basis for a strategic analysis of the company.
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Sledování utužení půdy na daném pozemku
VONDRÁČEK, Jan
In the thesis is discussed problem with soil compaction in the agriculture in the Czech Republic, causing of aspects of this phenomenon as well as a method suppressing this phenomenon and prevent its. In this work are also mentioned machinery and equipment and their possibilities editing to reduce the compression of the soil. There are also the results of field measurements, which were carried out during the season on land that has been processed by different technology in several of its parts and other measurements carried out occasionally in the Czech Republic to observe the state of soil compaction.
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Gene Expression Regulation of Biotransformation Enzymes and Transporters in Placental Barrier
Stejskalová, Lucie ; Pávek, Petr (advisor) ; Modrianský, Martin (referee) ; Vondráček, Jan (referee)
Charles University in Prague, Faculty of Pharmacy in Hradec Králové Department of Pharmacology and toxicology Candidate Mgr. Lucie Stejskalová Supervisor Doc. PharmDr. Petr Pávek, Ph.D. Title of Doctoral Thesis Gene expression regulation of biotransformation enzymes and transporters in placental barrier Placenta is a unique organ facilitating the communication between mother and fetus. It serves as a respiratory, excretory, endocrine and metabolic organ during intrauterine development of the fetus and is necessary for maintenance of pregnancy and for the fetal protection. Syncytiotrophoblast is a single layer that represents the critical morphological and metabolic component of the placental metabolic and exchange barrier. The placental trophoblast contains multiple drug transporters and metabolizing enzymes that form placental metabolic barrier. The levels of the enzymes are not stable and fluctuate throughout pregnancy. Most of the enzymes are expressed at very low mRNA levels, however, in some cases there is absence of any relevant detectable protein or catalytic activity. Cytochrome CYP1A1 is the only placental xenobiotic-metabolizing enzyme of the cytochrome P450 superfamily for which significant expression and catalytic activity have been conclusively demonstrated in placental trophoblasts...
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Legal and economic aspects of termination
Pelantová, Marie ; Vondráček, Jan (advisor) ; Mikulová, Magdalena (referee)
This thesis focuses on the institute termination of employment from the legal and economic point of view. From a legal perspective, it is mainly about the presentation of the most common ways of termination of employment, including acquainting the reader with a steady legal interpretation. From a microeconomic point of view, the termination of employment relates to the consequences for employers and employees and from a macroeconomic perspective, with consequences for the whole society. This is followed by a practical part which connects the foregoing and the current example of OKD Inc., which employs nearly 10 thousand employees and currently finds itself in serious financial difficulties, the state estimates the costs associated with the mass redundancies at different alternatives. These variants are bankruptcy or reorganization provided financial assistance to the state. At the conclusion of the two calculations are compared and outlines a list of partial measures to mitigate the effects of similar events in the future.
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