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Study utility properties of heat-reflective insulation for the buildings
Rauchfussová, Karolína ; TROJAN,, Karel (referee) ; Šťastník, Stanislav (advisor)
Presented work deals with the study progressive heat-reflecting foil thermal insulating materials and defines their thermal insulation properties. The work describes a transport mechanism of thermal energy in the structure of heat-reflecting materials, their physical properties, especially heat resistance, compared to the conventional thermal insulating materials available on Czech market. The main applications ways and installation methods of these materials (especially in low-energy and passive buildings) are also shown. The practical part is focused on asembling the measuring device HOT BOX in accordance with the valid standards, to determine the heat resistance of heat-reflecting materials. In next step the measurement of reflection of aluminum foils (an integral part of the structural arrangement heat-reflecting foil insulations) was performed.
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Non - covalent interactions in fundamental biological processes
Klusák, Vojtěch ; Rulíšek, Lubomír (advisor) ; Burda, Jaroslav (referee) ; Šponer, Jiří (referee)
Charles University in Prague Faculty of Science Department of Physical and Macromolecular Chemistry Non-covalent interactions in fundamental biological processes Doctoral Thesis Abstract Mgr. Vojtěch Klusák Supervisor: Mgr. Lubomír Rulíšek, CSc. Institute of Organic Chemistry and Biochemistry AS CR Center for Biomolecules and Complex Molecular Systems Praha 2010 2 3 Universita Karlova v Praze Přírodovědecká fakulta Katedra fyzikální a makromolekulární chemie Nekovalentní interakce v základních biologických procesech Souhrn disertační práce Mgr. Vojtěch Klusák Školitel: Mgr. Lubomír Rulíšek, CSc. Ústav organické chemie a biochemie AV ČR Centrum biomolekul a komplexních molekulárních systémů Praha 2010 4 5 Introduction Understanding inter- and intra-molecular interactions is the key for our insight into the properties of the biomolecular systems which, in turn, maintain and govern virtually all the processes in biology. Attempts to draw the structure-function relationship at the atomistic or electronic level bring us quite often beyond experimental resolution and capabilities. Modern tools of computational chemistry enable us to focus with satisfactory degree of reliability on the details of the studied process, gather additional (often complementary) information and ascribe particular structural features to...
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Praparation, structure and properties of hybrid nanoparticles with perovskite and spinel type cores
Kaman, Ondřej ; Havlíček, David (advisor) ; Wágner, Tomáš (referee) ; Zbořil, Radek (referee)
Charles University in Prague Faculty of Science Department of Inorganic Chemistry and Academy of Sciences of the Czech Republic Institute of Physics Department of Magnetics and Superconductors ondřej Kuman Preparation, structure and properties of hybrid nanoparticles with perovskite and spinel type cores Summary oÍ Thesis Praha 2009 Introduction The presented work Preparation, stntcture- and properties of lrybrid nanoparticles withperovskite and spinel ýpe cores was primarily dedicated to the synit,esis *á .,uav of hybridmagnetic nanoparticles based on La1."Sr*Mnól perovskite phase as core material and silicashell. The motivatio^n for this topic is the chancó that the mentioned nanomaterials could beused as mediators for magnetically induced hyperthermia or at least they could show thedirection for future development of new agent inlended for magnetic hyperthermia. Moreover,it turned out that these nanoparticles are interesting as contrast agents for MRI and thereforethe sense of the intended work obtained anothei dimension. In order to achieve certaingenerality of the developed procedures. and- to _enable por.1t1" comparison oiu.q.ri." d. data,we have involved some aspects concerning the CoFezo+ andCot.*ZdF";ó;.pt"el phases. Aims of Thesis I' To study of po_ssible preparation of Lar-*sr*Mnol nanoparticles...
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Polimeric nanoparticles stabilised by surfactants
Pánek, Jiří ; Štěpánek, Petr (advisor) ; Pleštil, Josef (referee) ; Sedlák, Marián (referee)
Polymeric nanoparticles stabilised by surfactants Doctoral Thesis Abstract Jiří Pánek Supervisor: RNDr. Petr Štěpánek, DrSc. PRAGUE 2010 CHARLES UNIVERSITY IN PRAGUE Faculty of Science Department of Physical and Macromolecular Chemistry INSTITUTE OF MACROMOLECULAR CHEMISTRY AS CR, v. v. i. Department of Supramolecular Polymer Systems Polymerní nanočástice stabilizované surfaktanty Souhrn disertační práce Jiří Pánek Školitel: RNDr. Petr Štěpánek, DrSc. PRAHA 2010 UNIVERZITA KARLOVA V PRAZE Přírodovědecká fakulta Katedra fyzikální a makromolekulární chemie ÚSTAV MAKROMOLEKULÁRNÍ CHEMIE AV ČR, v. v. i. Oddělení nadmolekulárních polymerních soustav 1 INTRODUCTION In the light of recent development, nanotechnology is the driving force of current research of new materials both in materials science and in biomedicinal applications. Nanomaterials can be constructed either by a top-down approach when the desired structure is produced in an already existing material or by a bottom-up approach when the required configuration is made by self-assembly of building blocks using various physicochemical interactions. Polymers and copolymers represent an ideal system for engineering of self-assembled nanomaterials since they offer a wide range of combinations of building materials that may serve for this purpose. The aims of...
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Side-chain Side-chain Interactions in Proteins
Berka, Karel ; Hobza, Pavel (advisor) ; Rulíšek, Lubomír (referee) ; Otyepka, Michal (referee)
Charles University in Prague Faculty of Science Department of Physical and Macromolecular Chemistry Side-chain Side-chain Interactions in Proteins Doctoral Thesis Abstract RNDr. Karel Berka Supervisors: Prof. Ing. Pavel Hobza, DrSc., FRSC RNDr. Jiří Vondrášek, CSc. Institute of Organic Chemistry and Biochemistry AS CR Center for Biomolecules and Complex Molecular Systems Praha 2009 2 Introduction Proteins are the most versatile and useful molecules in the cellular arsenal. They are the best catalysts the nature knows. Proteins cover the biggest amount of the cellular functions with range from metabolism and signaling through cell architecture to DNA replication. Variations of their structure and functions are amazing. And yet, they are built from simple building blocks - amino acids. Each amino acid has many possibilities of interactions with its neighborhood and the sequential context manifested through these possibilities is the main reason for the structure variability. The experimental investigation of the character and relative strength of interactions between amino acid residues is difficult. On the other hand, theoretical chemistry methods and techniques of are well suited for such task. They can provide useful information about structure, stability and nature of these interactions. The aim of the...
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Větvení obloukového kanálu ve vnějším magnetickém poli
Mrázek, Josef ; Hlína, Jan
An electric arc burning in mercury vapours exposed to external magnetic field changes its discharge path into a helix according to the Thomson principle of energy minimization. The voltage between the adjacent turns of the helix curvature may result in the critical electric field strenght in the vicinity of the arc channel, that leads to the branching and formation of a new discharge path acting as a turn-to-turn short. We have been interested in the electric field profile and surrounding parameters at the moment of branching, the speed of a new channel warming, temporal evolution of the restoration of a regular spiral channel, development of the arc current and distribution of the voltage between the series resistor and arc channel during the breakdown.
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Correspondence physics competition of MFF UK - its feedback and development
Kolář, Karel ; Žák, Vojtěch (advisor)
Correspondence physics competition of MFF UK - FYKOS - is extracurricular physical educational activity organized by university students for upper secondary school students. FYKOS is organized by Faculty of Mathematics and Physics of Charles University in Prague (MFF UK). FYKOS' main goals are: dissemination of physics, education of upper secondary school students, establishing conditions for creation of social bindings between participants (and organizers) and propagation of possibility of studies at MFF UK. This work is the first complete text about running of FYKOS and it is also the first systematical feedback from FYKOS' participants and FYKOS' organizers. The first part is a description of all FYKOS' activities (correspondence part, camps, FYKOSí Fyziklání and others). The second chapter includes an analysis of statistical survey of FYKOS' participants. Other chapters are dedicated to the description of gathering feedback and its interpretation. The feedback was made in several ways - interviews, web questionnaire and email questionnaire. Special attention was turned to study and professional development of former participants. Acquired knowledge lead up to formulation of possible improvements of FYKOS which are introduced in the last part of this theses. It was discovered that among respondents of...
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