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Mechanical behaviour of aramid fibers/polysiloxane matrix composites modified by bioactive nano/micro particles
Sochor, M.; Balík, Karel; Suchý, Tomáš; Sucharda, Zbyněk; Černý, Martin
2008 - English
This study is aimed at verification of influence of hydroxyapatite/tri-calcium phosphate nano/micro particles additives, commonly used to improve the bioactivity of implants, on mechanical properties of composite material consisting of polyamide fabrics embedded in poly (dimethyl siloxane) matrix potentially applicable in the bone surgery. Tento příspěvek pojednává o ověření vlivu nano/mikro aditiv hydroxyapatitu a fosforečnanu vápenatého, které jsou běžně používané ke zlepšení bioaktivity implantátů, na mechanické vlastnosti kompozitních materiálů tvořených Aramidovými vlákny a polysiloxanovou matricí, a jsou potenciálně využitelné v kostní chirurgii.
Keywords:
calcium apatites; composite material; nano particles
Available at various institutes of the ASCR
Mechanical behaviour of aramid fibers/polysiloxane matrix composites modified by bioactive nano/micro particles
This study is aimed at verification of influence of hydroxyapatite/tri-calcium phosphate nano/micro particles additives, commonly used to improve the bioactivity of implants, on mechanical properties ...
Geopolymer composites and restoration of baroque terracotta statue
Hanzlíček, Tomáš; Steinerová, Michaela; Straka, Pavel; Perná, Ivana
2007 - English
Restoration of baroque terracotta statue by means of geopolymer composites is described and discussed. Je popsána a diskutována metoda restaurování barokní terakotové sochy pomocí geopolymerních složených materiálů.
Keywords:
alkali activated materials; geopolymers
Available at various institutes of the ASCR
Geopolymer composites and restoration of baroque terracotta statue
Restoration of baroque terracotta statue by means of geopolymer composites is described and discussed....
Hydrogen - the product of coal thermal conversion
Kříž, Vlastimil; Brožová, Zuzana
2007 - English
Hydrogen fixed in the coal structure was converted to gaseous form using two-stage pyrolysis. The hydrogen volume in the pyrolytical gas strong increased along with the temperature in the cracking module. There was verified the possibility to obtain hydrogen by thermal decomposition of coal pyrolysis volatile products. Vodík vázaný ve struktuře uhlí byl získán v plynné formě pomocí dvoustupňové pyrolýzy. Objem vodíku v pyrolyzním plynu strmě rostl souběžně se zvyšující se teplotou ve štěpném modulu. Byla ověřena možnost získat vodík termickou degradací těkavých produktů z pyrolýzy uhlí.
Keywords:
hydrogen; coal; two-stage pyrolysis
Available at various institutes of the ASCR
Hydrogen - the product of coal thermal conversion
Hydrogen fixed in the coal structure was converted to gaseous form using two-stage pyrolysis. The hydrogen volume in the pyrolytical gas strong increased along with the temperature in the cracking ...
EUREF Related Activities in Czech Republic 2006-2007. National Report
Douša, J.; Filler, V.; Kostelecký Jr., J.; Kostelecký, J.; Palinkáš, V.; Šimek, J.; Řezníček, J.; Schenk, Vladimír; Mantlík, František; Schenková, Zdeňka
2007 - English
Implementation of EUREF in the CR, EPN stations in the CR, Czech National Positioning Systém CZEPOS, permanent GNSS networks GEONAS, VESOG and TOPNET, Vertical Reference and Gravity Reference Frames in the CR. Realizace sítě EUREF v ČR, stanice EPN v ČR, český národní poziční systém CZEPOS, permanentní GNSS sítě GEONAS, VESOG a TOPNET, vertikální a tíhový referenční rámec v ČR
Keywords:
EPN stations; CZEPOS; other GNSS network
Available at various institutes of the ASCR
EUREF Related Activities in Czech Republic 2006-2007. National Report
Implementation of EUREF in the CR, EPN stations in the CR, Czech National Positioning Systém CZEPOS, permanent GNSS networks GEONAS, VESOG and TOPNET, Vertical Reference and Gravity Reference Frames ...
Properties of alkali activated materials suitable for normalized tests
Straka, Pavel; Hanzlíček, Tomáš; Perná, Ivana; Steinerová, Michaela
2007 - English
The key properties of alkali activated materials from point of view normalized tests possibilities are analyzed and discussed. Klíčové vlastnosti alkalicky aktivovaných materiálů jsou analyzovány a diskutovány z hlediska jejich významu pro možné normalizované zkoušky.
Keywords:
alkali activated materials; geopolymers
Available at various institutes of the ASCR
Properties of alkali activated materials suitable for normalized tests
The key properties of alkali activated materials from point of view normalized tests possibilities are analyzed and discussed....
Pozzolanic properties of fluidized bed ashes
Hanzlíček, Tomáš; Perná, Ivana; Steinerová, Michaela; Straka, Pavel
2007 - English
Basic properties of fluidized bed ashes and new interpretation of geopolymer composition is presented. Jsou nově interpretovány základní vlastnosti popelů z fluidního spalování a složení rezultujících geopolymerů.
Keywords:
alkali activated materials; geopolymers
Available at various institutes of the ASCR
Pozzolanic properties of fluidized bed ashes
Basic properties of fluidized bed ashes and new interpretation of geopolymer composition is presented....
Utilization of fluidized bed ashes in thermal resistance applications
Perná, Ivana; Hanzlíček, Tomáš; Straka, Pavel; Steinerová, Michaela
2007 - English
Use of fluidized bed ashes for preparation of materials with a significant thermal resistance is elucidated and discussed. Je objasněno a diskutováno využití popelů z fluidního spalování pro přípravu materiálů s vysokou tepelnou odolností.
Keywords:
alkali activated materials; polymers
Available at various institutes of the ASCR
Utilization of fluidized bed ashes in thermal resistance applications
Use of fluidized bed ashes for preparation of materials with a significant thermal resistance is elucidated and discussed....
Porous composites based on siloxane resin for hard tissue replacements
Suchý, T.; Balík, Karel; Sochor, M.; Černý, Martin; Hulejová, H.; Pešáková, V.
2006 - English
A composite material based on polysiloxane and first on glass fabrics was prepared. The composite samples were prepared with controlled open porosity, the sizes of which were in the range: i) 0,2-0,4 mm, ii) 0,4-0,6 mm, and iii) >0,6 mm. For further improvement of osseointegration, a powder hydroxyapatite, particle size of 0,005 mm in the amount of 10 wgt %. The effects of surface treatment and hydroxyapatite matrix additives on osseointegration were studied by methods in vitro and in vivo.
Keywords:
composite material; glass fibers; hard tissue
Available at various institutes of the ASCR
Porous composites based on siloxane resin for hard tissue replacements
A composite material based on polysiloxane and first on glass fabrics was prepared. The composite samples were prepared with controlled open porosity, the sizes of which were in the range: i) 0,2-0,4 ...
Some surface improvement and osseointegration
Suchý, T.; Balík, Karel; Sedláček, R.; Sochor, M.
2006 - English
As a further perspective material to be used in orthopedics, glass fibers (R-glass, 21055 satin-woven fabric, VETROTEX, Saint Gobain, France) and polysiloxane matrix (M130, Lučební závody Kolín, Czech Republic) based composite materials have been investigated.
Keywords:
composite materials; glass fibers; osseointegration
Available at various institutes of the ASCR
Some surface improvement and osseointegration
As a further perspective material to be used in orthopedics, glass fibers (R-glass, 21055 satin-woven fabric, VETROTEX, Saint Gobain, France) and polysiloxane matrix (M130, Lučební závody Kolín, Czech ...
Alternative utilization of organic wastes - their co-processing with coal
Kříž, Vlastimil; Bučko, Z.
2006 - English
Samples of brown coal mixed with real organic wastes were gasified in a laboratory model gasification unit, using steam and carbon dioxide for gasification. The co-gasification possibility of brown coal/waste tires mixtures at industrial scale was verified. Směsné vzorky hnědého uhlí s reálnými organickými odpady byly zplyňovány v laboratorní modelové zplyňovací jednotce pomocí vodní páry a oxidu uhličitého. Ověření možnosti společného zplynění hnědého uhlí a odpadní pryže.
Keywords:
gasification; coal; used tires
Available at various institutes of the ASCR
Alternative utilization of organic wastes - their co-processing with coal
Samples of brown coal mixed with real organic wastes were gasified in a laboratory model gasification unit, using steam and carbon dioxide for gasification. The co-gasification possibility of brown ...
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