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Coordination chemistry of pharmaceuticals
Malová, Zuzana ; Lukeš, Ivan (advisor) ; Vojtíšek, Pavel (referee)
Present methods for diagnosis of neurodegenerative diseases are rather limited and in clinical practise are missing. This thesis is focused on utilization of the positron emission tomography using isotope 64 Cu(II). For the project, two contrast agents were proposed containing ligand for Cu (II) coordination and thioflavine T derivative as fluorescent dye, also as a targeting compound. Structure of the thioflavine T derivative was defined by X-ray structural analysis. The selected fluorescent dye has a high affinity for incipient amyloids and, when bound to their structure, has enhanced fluorescent properties. The proposed ligands are tetraazacyclic. The first one is a diamide, where the thioflavin T derivative is part of a macrocyclic ring. The second selected ligand is linked to the thioflavin T derivative via a linker. Key words: complexes; pharmaceuticals; transition metals
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Cyclam derivatives with coordinating bifunctional groups in 1,8 positions for selective copper(II) complexation
Hörnerová, Alžběta ; Kotek, Jan (advisor) ; Vojtíšek, Pavel (referee)
Copper radionuclides are the object of increasing interest due to their advantageous properties for use in tumor diagnostics (PET, SPECT) and radiotherapy. In order to accomplish the best biodistribution the metal ion needs to be complexed by a suitable ligand attached to a biologically active molecule. The aim of this thesis is the synthesis of asymmetrically disubstituted derivatives of 1,4,8,11-tetraazacyclotetradecan (cyclam) with methylphosphonate and methylphosphinate pendant arms in 1,8 positions. Although the synthesis of designed ligands failed, the obtained knowledge will be used in further approaches of preparation of these compounds. Keywords: radiotherapy, SPECT, PET
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Radiolabeling of aluminum and gallium complexes with radioisotope 18F
Kuncová, Lucie ; Kubíček, Vojtěch (advisor) ; Vojtíšek, Pavel (referee)
The most widely used emitter in positron emission tomography is the fluorine isotope 18 F, which can bind to a number of atoms, and thus allows the formation of imaging agents for positron emission tomography. This work will summarize methods for labeling complexes containing aluminum or gallium as a central cation, which can serve as stable carriers of the positron emitter in a human body. Both of these elements have unique physical and chemical properties suitable for molecular imaging. Therefore the development of complex labeling, their structure, coordination environment and some applications in nuclear medicine will be described here.
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Activation of ferrocene ligands by sandwich complexes of Group 4 metals
Kout, Matyáš ; Štěpnička, Petr (advisor) ; Vojtíšek, Pavel (referee)
This bachelor thesis deals with synthesis, reactivity and characterization of compounds resulting from the reactions of substituted ferrocene ligands with electron- deficient complexes of group 4 transition metals in oxidation state II with the aim of finding experimental conditions for preparation of complexes containing two metal atoms in one molecule. Reactions were performed under inert atmosphere and the products were crystallized. The obtained crystals were subjected to X-ray diffraction analysis and to NMR spectroscopy in order to elucidate molecular structure of the isolated products. Along the way, instability of the prepared compounds towards air oxygen and moisture has surfaced, though it also led to a discovery of several original compounds. Among these, the molecule containing peroxide ligand bonded to zirconocene fragment is worth noting as a fine example of oxygen molecule activation with low oxidative state complexes of transition metals.
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Social work with the indebted client from the point of view of a social worker
Hlavatá, Šárka ; Vojtíšek, Petr (advisor) ; Šťastná, Jaroslava (referee)
The bachelor's thesis deals with social work with an indebted client from the point of view of a social worker who works at debt counseling service. The theoretical part of the work will focus on the definition of indebtedness and related terms, causes of indebtedness, options for debt solutions (execution, insolvency), debt counseling, organizations for indebted clients, used methods of social work, etc. The aim of the research part of the work is to find out how the process of working with clients takes place from the point of view of a social worker of a debt counseling service in Liberecký region. What are the problems in the process of solving debts (insolvency)? What are the competencies of a social worker? This will be researched through qualitative research, interviews with social workers of debt counseling service.
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Social Work with Mentally Ill Homeless People
Jizbová, Kateřina ; Dragomirecká, Eva (advisor) ; Vojtíšek, Petr (referee)
The bachelor thesis deals with the topic of homeless people with symptoms of mental illness. The thesis is divided into theoretical and empirical part. The theoretical part defines homelessness, mental illness of homeless people and social work with this target group. The empirical part focuses on qualitative research which examines the experience of social workers with mentally ill homeless people. Keywords Homeless People, Homelessness, Mental Illness, Social Work 1
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The representation of socially disadvantaged groups in the social sector of buisness in the Czech Republic
Bělohlávková, Rut ; Šťastná, Jaroslava (advisor) ; Vojtíšek, Petr (referee)
This diploma thesis deals with the topic of social enterpreneurship in the Czech Republic and is specifically focused on the work integration of particular needy groups (such as ex-convicts, long- term unemployed, disabled persons and former alcohol or drug addicts etc.). The aim of the thesis is to identify patterns and regularities between specific groups and types of social enterprises they work for. The secondary data analysis explores social enterprises registered at czech social enterpreneurship website as well as the groups they employ and compares different approches of the enterprises. The qualitative empirical research uncovers enterpreneurs' motives and furthermore explores connections between the types of social enterprises and the target groups they employ.
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Social farming
Prosová, Zuzana ; Šťastná, Jaroslava (advisor) ; Vojtíšek, Petr (referee)
The aim of the thesis is to present the concept of social farming and to see if it is a suitable method of social integration of people with health and social disadvantages. It is an innovative approach that brings together two concepts: multifunctional agriculture and social services. The theoretical part of the thesis clarifies the idea of social economy and social business. It also focuses on social farming in the Czech Republic and Europe. It defines its theoretical background, actors and sources of funding. The thesis examines the link between agricultural activities and social work, benefits and limits of the concept for employees, farmers and the local community, and further focuses on the current problems that social farming in the Czech Republic is facing and that hinder its development. The data was obtained through semi- structured interviews. The results of the research showed countless benefits for all involved. The biggest disadvantage was the ignorance of the concept and the associated underestimation in society.
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Structure analysis of molecular crystals
Janíček, Jakub ; Císařová, Ivana (advisor) ; Vojtíšek, Pavel (referee)
Summary: Diploma thesis covers characterization of molecular crystals by X-ray structural analysis. N-carbamimidazoylisonikotinamid and 1-phenylguanidin were chosen, because their potential use in second harmony generation. Their salts with inorganic acids were prepared and determined their structures. Phase transition of 4,6-diaminopyrimidinium nitrate was studied by x-ray diffraction and differential scanning calorimetry. This phase transition is accompanied by thermosalient effect, causing that the crystals jump. Keywords: thermosalient, jumping crystal, X-ray diffraction, non-linear optics, N-carbamimidazoylnikotinamid, 1-phenylguanidin, 4,6diaminopyrmidin.
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Applied Mineralogy in Forensic Science field
Kotrlý, Marek ; Matějka, Dobroslav (advisor) ; Kopecká, Ivana (referee) ; Vojtíšek, Pavel (referee)
1 ABSTRACT Surprisingly, applied mineralogy plays an important role in the forensic science field. It is the miner- alogical phases which exist in many kinds of materials and traces but also the mineralogical analysis procedures which are often used in the field of so called trace evidence. For purposes of this study, 4 important fields of forensic microanalysis were chosen. These are those fields in which applied min- eralogy is applied and which characterize the width and heterogeneity of the concerned area. Powder X-ray microdiffraction plays quite an important and irreplaceable role not only in the direct phase analysis of substances in mixtures. The author designed, tested and introduced a set for centra- tion and direct check of the analysed surface during micro-diffraction analysis and also experimentally optimised sensing parameters for the different system configuration. A possibility to calculate the size of the nanoparticles (more precisely the size of a mono crystal domain) was tested. XRD methods ap- plication allows refining organic analysis for example in the case of new synthetic drugs. Micro diffrac- tion was also used for the first complex phase analysis of colour layers of the altar in the chapel in the castle of Křivoklát (dated 1480 - 1490). Forensic analysis of soil phases used to be,...
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