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New material
Hanzlíček, Tomáš; Perná, Ivana
2009 - Czech
The paper presents basic information about poly condensation reaction of clay minerals and introduces the possibilities of utilization in glass industry. Práce představuje základní informace o poly-kondenzačních procesech jílových minerálů a seznamuje s možnostmi použití ve sklářském průmyslu.
Keywords:
geopolymer; new material; utilization
Available at various institutes of the ASCR
New material
The paper presents basic information about poly condensation reaction of clay minerals and introduces the possibilities of utilization in glass industry.
Geopolymer reactions of the metakaolinite to preparation zeolite A
Hájek, Pavel; Koloušek, D.; Andertová, J.
2008 - Czech
Geopolymer reactions have much in common with diagenetic transformations of the sedimentary rocks. Inside of laboratory conditions occur of geopolymer masses in alkali reaction of metakaolinite to sodium aluminate (Fastex 81). As a result reaction is rise the zeolite phase (zeolite A) inside of relevant substance. Results reaction were confirmed by means of X – ray diffractometry and SEM. Geopolymerní reakce mají mnoho společného s diagenetickými přeměnami sedimentárních hornin. V laboratorních podmínkách vznikají geopolymerní hmoty při alkalické reakci metakaolinitu a hlinitanu sodného (Fastex 81). Jako výsledek reakce je objevení zeolitové fáze (zeolit A) v dané hmotě. Výsledky reakce byli potvrzeny pomocí XRD a SEM.
Keywords:
geopolymer reactions; alkali reaction
Available at various institutes of the ASCR
Geopolymer reactions of the metakaolinite to preparation zeolite A
Geopolymer reactions have much in common with diagenetic transformations of the sedimentary rocks. Inside of laboratory conditions occur of geopolymer masses in alkali reaction of metakaolinite to ...
Identification of gel structure on Zr1Nb samples after corrosion experiments
Weishauptová, Zuzana
2008 - Czech
The performed study is aimed on the identification of gel structure of ZrO2 corrosion layer by means of the analysis of water vapour sorption isotherms together with microhardness. Provedená studie je zaměřena na identifikaci gelové struktury korozní vrstvy ZrO2 s pomocí analýzy sorpčních izoterem vodní páry spolu s mikrotvrdostí.
Keywords:
zirconium alloys; corrosion layer; hydrated ZrO2
Available at various institutes of the ASCR
Identification of gel structure on Zr1Nb samples after corrosion experiments
The performed study is aimed on the identification of gel structure of ZrO2 corrosion layer by means of the analysis of water vapour sorption isotherms together with microhardness.
Influence of geodynamics of the Central European region on the Bohemian Massif
Schenková, Zdeňka
2008 - Czech
Final report about achievement of a project of the programme CONTACT - Central European Initiative for the years 2005 – 2008. Závěrečná zpráva o realizaci projektu KONTAKT – Středoevropská iniciativa za léta 2005 – 2008.
Keywords:
geodynamics; GPS; geodynamic network GEONAS
Available at various institutes of the ASCR
Influence of geodynamics of the Central European region on the Bohemian Massif
Final report about achievement of a project of the programme CONTACT - Central European Initiative for the years 2005 – 2008.
Composite material based on aramid fibers and polysiloxane matrix modified by ydroxapatite nanoparticles
Sochor, M.; Balík, Karel; Suchý, Tomáš; Sucharda, Zbyněk; Černý, Martin
2008 - English
Tato studie si klade za cíl ověření vlivu nanočásticového hydroxyaptitu, jako bioaktivní příměsi matrice, na mechanické vlastnosti (jmenovitě pevnost v ohybu a ohybový modul pružnosti) kompozitního materiálu perspektivně použitelného v kostní chirurgii. This study is aimed at verification of influence of hydroxyapatite nanoparticles additives, commonly used to improve the bioactivity of implants, on mechanical properties (namely ultimate strength in bending and modulus of elasticity in bending) of composite material potentially applicable in the bone surgery.
Keywords:
composite material; hydroxyapatite; mechanical behavior
Available at various institutes of the ASCR
Composite material based on aramid fibers and polysiloxane matrix modified by ydroxapatite nanoparticles
Tato studie si klade za cíl ověření vlivu nanočásticového hydroxyaptitu, jako bioaktivní příměsi matrice, na mechanické vlastnosti (jmenovitě pevnost v ohybu a ohybový modul pružnosti) kompozitního ...
Continuous pyrolysis of carbonaceous materials with model gasification of the solid product
Kříž, Vlastimil; Káš, Václav; Brožová, Zuzana
2008 - English
Vzorky samotného hnědého uhlí z dolu Jiří a jeho směsi (30%) s pneu-pryží, Forsanem (ABS), a celulózou byly pyrolyzovány v rotační peci při teplotě 900°C. Tuhý produkt byl zplyňován vodní parou a oxidem uhličitým. Samples of lignite from Jiří Mine alone and its mixtures (30%) with waste tire-rubber, Forsan (ABS) and cellulose were pyrolyzed on a rotary kiln at a temperature of 900°C. The solid product was gasified by steam and carbon dioxide.
Keywords:
rotary kiln; pyrolysis; coal
Available at various institutes of the ASCR
Continuous pyrolysis of carbonaceous materials with model gasification of the solid product
Vzorky samotného hnědého uhlí z dolu Jiří a jeho směsi (30%) s pneu-pryží, Forsanem (ABS), a celulózou byly pyrolyzovány v rotační peci při teplotě 900°C. Tuhý produkt byl zplyňován vodní parou a ...
Monitoring of seismic impact on historical buildings and thier damage during building the tunnel Blanka – especially influence on the stability of historical buildings in the Prague Castle area
Brož, Milan; Štrunc, Jaroslav; Svatoš, J.
2008 - Czech
The persistence of unique historical buildings is restricted due to weathering of construction material enhanced by meteorological processes such as storms, driving rain and temperature variations beneath the freezing point. Dynamic forces endangering the mechanical stability of exposed elements of building structures could be caused by impacts of seismic waves. Životnost staveb unikátní kulturně historické hodnoty je snižována zejména jejich dynamickou únavou, která může být nepříznivě ovlivněna výstavbou inženýrských staveb v jejím okolí. Postupující oslabování tuhosti a zmenšování odolnosti jednotlivých extrémně namáhaných stavebních prvků se vyšetřuje metodami monitorování jejich seismické odezvy.
Keywords:
static; geotechnic; monitoring
Available at various institutes of the ASCR
Monitoring of seismic impact on historical buildings and thier damage during building the tunnel Blanka – especially influence on the stability of historical buildings in the Prague Castle area
The persistence of unique historical buildings is restricted due to weathering of construction material enhanced by meteorological processes such as storms, driving rain and temperature variations ...
Uppermost crust S-wave velocities from surface waves generated by M4.1 earthquake in Lubin, Poland
Řezba, Karel; Kolínský, Petr
2008 - English
Studujeme Rayleighovy vlny generované zemětřesením v Lubinu. Za použití programu SVAL je vypočten model rychlostí S vln. Rayleigh waves generated by rockburst in Lubin is studied. S-wave velocity model is estimated, using program SVAL.
Keywords:
rayleigh wave; group velocity dispersion curves; rockburst
Available at various institutes of the ASCR
Uppermost crust S-wave velocities from surface waves generated by M4.1 earthquake in Lubin, Poland
Studujeme Rayleighovy vlny generované zemětřesením v Lubinu. Za použití programu SVAL je vypočten model rychlostí S vln.
Collision movements detected in Sudeten Marginal Fault zone, Bohemian Massif
Stemberk, Josef; Košťák, Blahoslav; Cacoń, S.
2008 - English
Results of monitoring of active fault movements are discussed.
Keywords:
active tectonics; fault displacements; monitoring
Available at various institutes of the ASCR
Collision movements detected in Sudeten Marginal Fault zone, Bohemian Massif
Results of monitoring of active fault movements are discussed.
The gravity measurements in the area of the geodynamic network HIGHLANDS
Kujal, Roman
2008 - Czech
Three gravity measurements were realized using the relative gravimeter SCINTREX CG-05 on sites of geodynamic network HIGHLANDS, selected sites of geodynamic network WEST SUDETEN and fundamental gravity points of the Czech Gravity Reference Network. Tři gravimetrická měření pomocí relativního gravimetru SCINTREX CG-05 byla realizována na stanovištích geodynamické sítě Vysočina, vybraných bodech geodynamické sítě ZÁPADNÍ SUDETY a na bodech základního tíhového bodového pole.
Keywords:
gravity measurements; Bohemian Massif
Available at various institutes of the ASCR
The gravity measurements in the area of the geodynamic network HIGHLANDS
Three gravity measurements were realized using the relative gravimeter SCINTREX CG-05 on sites of geodynamic network HIGHLANDS, selected sites of geodynamic network WEST SUDETEN and fundamental ...
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