Deterioration in tunnel lining due to moisture effects
Vodička Jan; Irrgang Rainer Gerhard; Procházka Petr
2014 - English The thesis is focused on interpretation of problems from underground engineering: deterioration of tunnel lining due to various external effects, like moistening, extreme temperature etc. Mathematical and numerical methods are applied to 3D problems and the results are compared with the experience and knowledge from practice and the available publications will be also discussed. In the study internal chemical and physical changes in fiber reinforced concrete linings and surrounding rock associated with a gradual external changes applied to tunnel structure are observed and monitored in order to observe their reciprocal interactions, clarifying whether they could be related to the water activities and heat transfer inside of the bearing system.The thesis is focused on interpretation of problems from underground engineering: deterioration of tunnel lining due to various external effects, like moistening, extreme temperature etc. Mathematical and numerical methods are applied to 3D problems and the results are compared with the experience and knowledge from practice and the available publications will be also discussed. In the study internal chemical and physical changes in fiber reinforced concrete linings and surrounding rock associated with a gradual external changes applied to tunnel structure are observed and monitored in order to observe their reciprocal interactions, clarifying whether they could be related to the water activities and heat transfer inside of the bearing system. Keywords: FEM; tunnel lining; moisture transfer; 3D problem; drainage; numerical modeling; waterproofing membrane. Available at various departments of the ČVUT. Deterioration in tunnel lining due to moisture effects

The thesis is focused on interpretation of problems from underground engineering: deterioration of tunnel lining due to various external effects, like moistening, extreme temperature etc. Mathematical ...

Vodička Jan; Irrgang Rainer Gerhard; Procházka Petr
České vysoké učení technické v Praze, 2014

Project management for energy efficient houses in Mongolian climatic conditions
Krejčí Luboš; Banzragch Turbold; Kabele Karel
2014 - English The subject of this dissertation work is detailed analyses and studies for the fundamental concepts of Project Management of energy efficient houses in Mongolia. A work consists of twelve main parts which are future divided into detailed single-topic chapters. Research is covered by a compendium of advantages of energy efficient houses, construction alternative materials on construction market and all prospects of economics and project management complexly together for Mongolian continental climatic situation. Thesis is interlaced by many pictures and schemes for better understanding of this topic. The appendices consist of "winter heating fuel usage model" MS Excel program.The subject of this dissertation work is detailed analyses and studies for the fundamental concepts of Project Management of energy efficient houses in Mongolia. A work consists of twelve main parts which are future divided into detailed single-topic chapters. Research is covered by a compendium of advantages of energy efficient houses, construction alternative materials on construction market and all prospects of economics and project management complexly together for Mongolian continental climatic situation. Thesis is interlaced by many pictures and schemes for better understanding of this topic. The appendices consist of "winter heating fuel usage model" MS Excel program. Keywords: project management; energy efficient houses; alternative materials; technology; climatic situation; Mongolia, Available at various departments of the ČVUT. Project management for energy efficient houses in Mongolian climatic conditions

The subject of this dissertation work is detailed analyses and studies for the fundamental concepts of Project Management of energy efficient houses in Mongolia. A work consists of twelve main parts ...

Krejčí Luboš; Banzragch Turbold; Kabele Karel
České vysoké učení technické v Praze, 2014

Development of Hall sensors for steady state magnetic diagnostic of fusion reactors
Ďuran Ivan; Sentkerestiová Jana; Stöckel Jan
2014 - English Hall sensors development and evaluation for fusion reactorsHall sensors development and evaluation for fusion reactors Keywords: Hall sensor; magnetic diagnostics; fusion reators; ITER Available at various departments of the ČVUT. Development of Hall sensors for steady state magnetic diagnostic of fusion reactors

Hall sensors development and evaluation for fusion reactorsHall sensors development and evaluation for fusion reactors

Ďuran Ivan; Sentkerestiová Jana; Stöckel Jan
České vysoké učení technické v Praze, 2014

Thorium fuel cycle
Vočka Radim; Frýbort Jan; Matal Oldřich
2014 - English Analysis of thorium fuel in MSR and VVER-1000 reactorsAnalysis of thorium fuel in MSR and VVER-1000 reactors Keywords: thorium; MSR; VVER-1000; HELIOS; MCNP5; erbium Available at various departments of the ČVUT. Thorium fuel cycle

Analysis of thorium fuel in MSR and VVER-1000 reactorsAnalysis of thorium fuel in MSR and VVER-1000 reactors

Vočka Radim; Frýbort Jan; Matal Oldřich
České vysoké učení technické v Praze, 2014

Capillary Discharge Plasma as a Source of Soft X-ray Radiation(Simulation and Theory)
Vrba Pavel; Hübner Jakub; Kubeš Pavel
2014 - English Available at various departments of the ČVUT. Capillary Discharge Plasma as a Source of Soft X-ray Radiation(Simulation and Theory)

Vrba Pavel; Hübner Jakub; Kubeš Pavel
České vysoké učení technické v Praze, 2014

The study of point defects, trapping and transfer of charge
Nikl Martin; Buryi Maksym; Jastrabík Lubomír
2014 - English Electron spin resonance study of wide band gap scintillatorsElectron spin resonance study of wide band gap scintillators Keywords: Scintillator; electron traps; hole traps; pair of ions Available at various departments of the ČVUT. The study of point defects, trapping and transfer of charge

Electron spin resonance study of wide band gap scintillatorsElectron spin resonance study of wide band gap scintillators

Nikl Martin; Buryi Maksym; Jastrabík Lubomír
České vysoké učení technické v Praze, 2014

Coherence effects in hadron-nucleus and heavy ion collisions at high energies
Nemčík Ján; Čepila Jan; Dolejší Jiří
2014 - English Production of dileptons and direct photons in proton-nucleus and heavy-ion collisions at high energies within the color dipole approachProduction of dileptons and direct photons in proton-nucleus and heavy-ion collisions at high energies within the color dipole approach Keywords: Drell-Yan process,Direct photons,Color dipole approach,Coherence effects Available at various departments of the ČVUT. Coherence effects in hadron-nucleus and heavy ion collisions at high energies

Production of dileptons and direct photons in proton-nucleus and heavy-ion collisions at high energies within the color dipole approachProduction of dileptons and direct photons in proton-nucleus and ...

Nemčík Ján; Čepila Jan; Dolejší Jiří
České vysoké učení technické v Praze, 2014

MATHEMATICAL MODEL OF INTERACTIONS IN DISCRETE DISLOCATION DYNAMICS
Beneš Michal; Pauš Petr; Maršík František
2013 - English Available at various departments of the ČVUT. MATHEMATICAL MODEL OF INTERACTIONS IN DISCRETE DISLOCATION DYNAMICS

Beneš Michal; Pauš Petr; Maršík František
České vysoké učení technické v Praze, 2013

Assessment of building materials in environmental context
Hájek Petr; Hodková Julie
2013 - English Nowadays, the environmental impacts of operational stage of buildings, which are the most important from their life cycle perspective, can be relatively well assessed, i.e. operational energy and water consumption or production of emission. The second biggest environmental impacts of buildings comes from their production stage - manufacture of building materials. Although it is not a negligible impact, it is usually not taken into account during the design process of buildings. One of the main reasons is the unavailability of quality Life Cycle Assessment (LCA) data of building materials needed for the assessment.This thesis deals with assessing the production stage of buildings. Its aim is to shed light on the issue of the appropriate use of already existing LCA data of building materials and to facilitate the acquisition and processing of new LCA data in any national context. The work focuses on LCA data of building materials (primary energy consumption, global warming potential, acidification potential, etc.) in terms of availability in different databases, methods of calculation, quality and possibilities of accurate use in construction practice. It examines the differences between existing data in international databases, analyzes their causes and identifies pitfalls of their use in the national context.One of the main results of the work is a guidance for the use of existing specific LCA data of building products in a national context and a methodology describing the process of new LCA data gathering in context of Czech Republic, where no national data have yet been available, i.e. creating new national database and related Czech environmental assessment tool for building elements Envimat. The work is done in accordance with international standards.Due to the large amount of specific environmental data of construction products available abroad, e.g. in France of Germany, the work focuses on the possibilities of their use as generic data in the national context, in comparison with already existing generic data. Thus, the second main output of the work was elaborated in a form of a methodology for the use of existing LCA data on building materials as generic data in a national context. The methodology is in accordance with the requirements of European standards and scientifically recognized literature and can be used in each country. The development was based on a detailed analysis and comparison of selected environmental data sets from two largest LCA databases - French INIES and Swiss Ecoinvent. A universal Generic data template was created to simplify the work of LCA practitioners with available meta data and to allow unified data quality assessment. At the final step, the methodology is validated by two case studies - one focusing on selection of the most appropriate generic data for the national context, second dealing with the assessment of a simplified building model by the generic data sets selected according to the proposed methodology.Nowadays, the environmental impacts of operational stage of buildings, which are the most important from their life cycle perspective, can be relatively well assessed, i.e. operational energy and water consumption or production of emission. The second biggest environmental impacts of buildings comes from their production stage - manufacture of building materials. Although it is not a negligible impact, it is usually not taken into account during the design process of buildings. One of the main reasons is the unavailability of quality Life Cycle Assessment (LCA) data of building materials needed for the assessment.This thesis deals with assessing the production stage of buildings. Its aim is to shed light on the issue of the appropriate use of already existing LCA data of building materials and to facilitate the acquisition and processing of new LCA data in any national context. The work focuses on LCA data of building materials (primary energy consumption, global warming potential, acidification potential, etc.) in terms of availability in different databases, methods of calculation, quality and possibilities of accurate use in construction practice. It examines the differences between existing data in international databases, analyzes their causes and identifies pitfalls of their use in the national context.One of the main results of the work is a guidance for the use of existing specific LCA data of building products in a national context and a methodology describing the process of new LCA data gathering in context of Czech Republic, where no national data have yet been available, i.e. creating new national database and related Czech environmental assessment tool for building elements Envimat. The work is done in accordance with international standards.Due to the large amount of specific environmental data of construction products available abroad, e.g. in France of Germany, the work focuses on the possibilities of their use as generic data in the national context, in comparison with already existing generic data. Thus, the second main output of the work was elaborated in a form of a methodology for the use of existing LCA data on building materials as generic data in a national context. The methodology is in accordance with the requirements of European standards and scientifically recognized literature and can be used in each country. The development was based on a detailed analysis and comparison of selected environmental data sets from two largest LCA databases - French INIES and Swiss Ecoinvent. A universal Generic data template was created to simplify the work of LCA practitioners with available meta data and to allow unified data quality assessment. At the final step, the methodology is validated by two case studies - one focusing on selection of the most appropriate generic data for the national context, second dealing with the assessment of a simplified building model by the generic data sets selected according to the proposed methodology. Keywords: Life cycle; LCA; Environmental product declaration; EPD; Environmental impact; Construction materials; Building products; LCA database; Primary energy input; Global warming potential; Acidification potential; Production stage; Specific data; Generic data. Available at various departments of the ČVUT. Assessment of building materials in environmental context

Nowadays, the environmental impacts of operational stage of buildings, which are the most important from their life cycle perspective, can be relatively well assessed, i.e. operational energy and ...

Hájek Petr; Hodková Julie
České vysoké učení technické v Praze, 2013

Numerical Solution of Nonlinear Reaction Diffusion Systems
Beneš Michal; Mach Jan; Ševčovič Daniel
2013 - English Long time numerical solution of reaction-diffusion systemsLong time numerical solution of reaction-diffusion systems Keywords: nonlinear Galerkin FEM; reaction-diffusion system Available at various departments of the ČVUT. Numerical Solution of Nonlinear Reaction Diffusion Systems

Long time numerical solution of reaction-diffusion systemsLong time numerical solution of reaction-diffusion systems

Beneš Michal; Mach Jan; Ševčovič Daniel
České vysoké učení technické v Praze, 2013