No (6259)
Number of found documents:
6259
Published from
to
Dynamic loading test of the footbridge for pedestrians and cyclists over the Berounka river in Prague - Radotin after the installation of vibration absorbers
Hračov, Stanislav; Urushadze, Shota
2023 - Czech
The report describes the execution procedure and the results of the dynamic loading test of the pedestrian bridge in Prague Radotín after the installation of vibration absorbers. The vibration level of the bridge deck from pedestrians and runners is compared with the results of a previous dynamic test before the installation of vibration absorbers and is assessed with regard to their comfort and health. Zpráva popisuje postup provedení a výsledky dynamické zatěžovací zkoušky lávky pro pěší v Praze Radotíně po instalaci pohlcovačů kmitů. Úroveň vibrací mostovky lávky od přechodů chodců a běžců je srovnána s výsledky předchozí dynamické zkoušky před instalací pohlcovačů kmitů a je posouzena s ohledem na jejich pohodlí a zdraví.
Keywords:
footbridge; dynamic loading test; pedestrian load; vibration comfort criteria; tuned mass dampers
Available at various institutes of the ASCR
Dynamic loading test of the footbridge for pedestrians and cyclists over the Berounka river in Prague - Radotin after the installation of vibration absorbers
The report describes the execution procedure and the results of the dynamic loading test of the pedestrian bridge in Prague Radotín after the installation of vibration absorbers. The vibration level ...
Final report on the use of membrane separation of salts containing sulphates and chlorides of typical metals from industrial waters
Šyc, Michal; Veselý, Václav
2023 - Czech
The aim of the collaboration was to verify the possible use of membrane processes for the recovery of metals or their hydroxides, preferably in separated form. As a basic membrane method we will consider electrodialysis/electrocoagulation. The processes will be validated on three typical types of industrial wastewater. The first type is leachate, the second is industrial water from surface treatment technology and the third is process water from hydrometallurgical waste treatment. The aim is not to design a technology for the final treatment of industrial wastewater. Cílem spolupráce bylo ověřit možné využití membránových procesů pro získávání kovů nebo jejich hydroxidů a to nejlépe v separované formě. Jako základní membránovou metodu budeme uvažovat elektrodialýzu/elektrokoagulaci. Procesy budou ověřeny na třech typických druhů promyslových odpadních vod. Prvním druhem jsou průsakové vody, druhým pak průmyslové vody z technologie povrchových úprav a třetím pak jsou vody technologické z hydrometalur-gického zpracování odpadů. Cílem není návrh technologie na finální úpravu průmyslových odpadních vod.
Keywords:
membrane processes; industrial wastewater; metal hydroxides
Available at various institutes of the ASCR
Final report on the use of membrane separation of salts containing sulphates and chlorides of typical metals from industrial waters
The aim of the collaboration was to verify the possible use of membrane processes for the recovery of metals or their hydroxides, preferably in separated form. As a basic membrane method we will ...
Chemical and microstructural analysis of brick samples from the object of Zákupy castle horse stables
Frankeová, Dita; Bauerová, Pavla; Náhunková, Pavla; Ševčík, Radek; Mácová, Petra; Slížková, Zuzana; Vondráčková, Michaela
2023 - Czech
As part of the construction-technical survey, historical brick samples were characterized using thermal analysis (TGA), scanning electron microscopy (SEM/EDS), ion chromatography (IC), infrared spectrometry (FTIR) and physical tests. The results of the tests testify to the good production quality of the masonry elements used. Based on the analyzes carried out, it can be assumed that the observed damage to the bricks is caused by high wetting of the masonry in combination with frost cycles, as well as crystallization cycles of water-soluble salts present in the surface layer of some bricks. V rámci stavebně-technického průzkumu byl provedena charakterizace vzorků historických cihel s využitím termické analýzy (TGA), skenovacího elektronového mikroskopu (SEM/EDS), iontové chromatografie (IC), infračervené spektrometrie (FTIR) a fyzikálních zkoušek. Výsledky zkoušek cihel z objektu Konírna zámku Zákupy svědčí o dobré výrobní kvalitě použitých zdících prvků. Na základě provedených analýz lze předpokládat, že na pozorovaném poškození cihel se podílí vysoké zavlhčení zdiva v kombinaci s mrazovými cykly, a také krystalizační cykly vodorozpustných solí přítomných v povrchové vrstvě některých cihel.
Keywords:
TGA; FTIR; masonry; bricks
Available at various institutes of the ASCR
Chemical and microstructural analysis of brick samples from the object of Zákupy castle horse stables
As part of the construction-technical survey, historical brick samples were characterized using thermal analysis (TGA), scanning electron microscopy (SEM/EDS), ion chromatography (IC), infrared ...
Investigation of basic mechanical and fracture-mechanical properties of specimens cut from high pressure gas pipeline – locality L177/2 after a twentyone months exposition to moist and dry hydrogen at the pressure 3 MPa
Gajdoš, Lubomír; Šperl, Martin; Šorm, Filip; Bejdl, Jan
2023 - Czech
Investigation of the effect of moist and dry hydrogen pressurized to 3 MPa on mechanical and fracture properties of gas pipeline steel ČSN 13126, tensile specimens, Charpy specimens and CT specimens were kept loaded during the exposition in moist hydrogen, after a 21th months exposition it was found that ductility of tensile specimens and fracture parameters Jin and J0,2 of CT specimens decreased whilst the parameter Jm was slightly increased. Vyšetření vlivu vlhkého a suchého vodíku stlačeného na tlak 3 MPa na mechanické a lomové vlastnosti plynovodní oceli ČSN 13126, tahové vzorky, Charpy vzorky i CT vzorky byly během expozice ve vlhkém vodíku trvale zatíženy, po 21 měsících expozice byl zjištěn pokles tažnosti tahových vzorků, pokles lomových parametrů Jin a J0,2 a mírné zvýšení parametru Jm.
Keywords:
stress-strain diagram; Ramberg-Osgood dependence; impact strength; fracture toughness
Available at various institutes of the ASCR
Investigation of basic mechanical and fracture-mechanical properties of specimens cut from high pressure gas pipeline – locality L177/2 after a twentyone months exposition to moist and dry hydrogen at the pressure 3 MPa
Investigation of the effect of moist and dry hydrogen pressurized to 3 MPa on mechanical and fracture properties of gas pipeline steel ČSN 13126, tensile specimens, Charpy specimens and CT specimens ...
Chemical and microstructural analysis of sandstone samples from the cemetery portal at the Gothard in Hořice
Slížková, Zuzana; Frankeová, Dita; Bauerová, Pavla; Náhunková, Pavla; Mácová, Petra; Ševčík, Radek; Vondráčková, Michaela
2023 - Czech
Determination of the chemical and mineralogical composition of the surface layer of sandstone and the speed of water transport through the surface of the stone (comparison of the properties of the light ocher surface and the black surface of sandstone. Stanovení chemického a mineralogického složení povrchové vrstvy pískovce a rychlosti transportu vody povrchem kamene (srovnání vlastností světlého povrchu a černého povrchu pískovce).
Keywords:
sandstone; black film; water absorption; chemical composition; mineralogical composition; stone surface
Available at various institutes of the ASCR
Chemical and microstructural analysis of sandstone samples from the cemetery portal at the Gothard in Hořice
Determination of the chemical and mineralogical composition of the surface layer of sandstone and the speed of water transport through the surface of the stone (comparison of the properties of the ...
Short-term savings and financial resilience of Czechs.
Fialová, Kamila; Mysíková, Martina
2023 - Czech
The aim of this study is to identify the main factors that may affect the resilience of Czech households to financial shocks through their impact on savings - short-term financial reserves.\n\n Cílem této studie je identifikovat hlavní faktory, které mohou působit na odolnost českých domácností vůči finančním šokům skrze vliv na vytváření úspor – krátkodobé finanční rezervy.\n\n
Keywords:
Financial resilence; short-term savings
Available at various institutes of the ASCR
Short-term savings and financial resilience of Czechs.
The aim of this study is to identify the main factors that may affect the resilience of Czech households to financial shocks through their impact on savings - short-term financial reserves.\n\n
Novel embedding resins for 3D-SEM II
Šlouf, Miroslav; Pavlova, Ewa; Strachota, Beata; Strachota, Adam; Nebesářová, Jana; Týč, Jiří; Krzyžánek, Vladislav; Skoupý, Radim
2023 - English
Research report for Thermo Fisher Scientific s. r. o., based on common project awarded by TA CR (program: National center of competence, TN01000008).
Keywords:
novel embedding resins; 3D-SEM microscopy; higher e-beam resistance
Available at various institutes of the ASCR
Novel embedding resins for 3D-SEM II
Research report for Thermo Fisher Scientific s. r. o., based on common project awarded by TA CR (program: National center of competence, TN01000008).
Geological and geotechnical characterisation of the mining environment - URF Bukov II - Interim report II
Bukovská, Z.; Rukavičková, L.; Chabr, T.; Morávek, R.; Levý, O.; Sosna, K.; Souček, Kamil; Vavro, Martin; Zelinková, T.; Dobeš, P.; Švagera, O.; Kryl, J.; Soejono, I.; Řihošek, J.; Holeček, J.; Hanák, J.; Čermák, F.; Kašpar, R.; Mareček, L.; Nedvěd, J.; Vavro, Leona; Waclawik, Petr; Staš, Lubomír; Myška, O.
2023 - Czech
This report describes the work carried out in the second year of the public contract Geological and geotechnical characterisation of the rock environment – PVP Bukov II. The\ncharacterisation and descriptive works are directly related to the excavation of the premises for the future underground laboratory. These include in particular: geological and geotechnical documentation of the faces and walls of the workings, petrographic, mineralogical and structural geological documentation, hydrogeological characterisation of the environment, as well as determination of the physical and mechanical properties of the rock mass in situ and in the laboratory, geophysical characterisation and monitoring of the seismic effects of blasting and hydrogeological monitoring. An important part of this report is preparation of the classification system used to describe the rock mass. The report also includes a brief overview of the work planned for the third year of the project. Tato zpráva popisuje práce zhotovené v druhém roce řešení veřejné zakázky Geologická a geotechnická charakterizace horninového prostředí – PVP Bukov II. Charakterizační a popisné práce přímo navazují na ražbu prostor pro budoucí podzemní laboratoř a zahrnují zejména: geologické a geotechnické dokumentace čeleb a stěn díla, petrografickou, mineralogickou a strukturně geologickou dokumentaci, hydrogeologickou charakterizaci prostředí, dále stanovení fyzikálně-mechanických vlastností horninového masivu in situ a v laboratoři, geofyzikální charakterizaci a monitoring seismických účinků trhacích prací a hydrogeologický monitoring. Důležitou součástí je příprava klasifikačního systému pro popis horninového masivu. Zpráva je doplněna stručným přehledem prací plánovaných pro třetí rok řešení projektu.
Keywords:
geological documentation; 3D model; petrography; Bukov URF; petrophysical data
Available on request at various institutes of the ASCR
Geological and geotechnical characterisation of the mining environment - URF Bukov II - Interim report II
This report describes the work carried out in the second year of the public contract Geological and geotechnical characterisation of the rock environment – PVP Bukov II. The\ncharacterisation and ...
Aerodynamic Measurements on Subsonic Compressor Blade Cascades KR-D-7 and KR-D-8
Šimurda, David; Hála, Jindřich; Luxa, Martin; Radnic, Tomáš
2023 - English
This report contains results and evaluation of aerodynamic measurements conducted on two variant subsonic compressor blade cascades with MCA profile (KR-D-7) and DCA profile (KR-D-8) at transonic flow regimes.
Keywords:
compressor blade cascade; experiment; transonic flow; subsonic flow; MCA profile; DCA profile
Available at various institutes of the ASCR
Aerodynamic Measurements on Subsonic Compressor Blade Cascades KR-D-7 and KR-D-8
This report contains results and evaluation of aerodynamic measurements conducted on two variant subsonic compressor blade cascades with MCA profile (KR-D-7) and DCA profile (KR-D-8) at transonic flow ...
Aerodynamic Measurements on Transonic Compressor Blade Cascades KR-D-9 and KR-D-10
Šimurda, David; Hála, Jindřich; Luxa, Martin
2023 - English
This report contains results and evaluation of aerodynamic measurements conducted on two variant transonic compressor blade cascades with MCA profile (KR-D-10) and DCA profile (KR-D-9) at transonic flow regimes.
Keywords:
compressor blade cascade; experiment; transonic flow; MCA profile; DCA profile
Available at various institutes of the ASCR
Aerodynamic Measurements on Transonic Compressor Blade Cascades KR-D-9 and KR-D-10
This report contains results and evaluation of aerodynamic measurements conducted on two variant transonic compressor blade cascades with MCA profile (KR-D-10) and DCA profile (KR-D-9) at transonic ...
NRGL provides central access to information on grey literature produced in the Czech Republic in the fields of science, research and education. You can find more information about grey literature and NRGL at service web
Send your suggestions and comments to nusl@techlib.cz
Provider
Other bases