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Inorganic wastes like raw material for geopolymer binders
Hanzlíček, Tomáš; Perná, Ivana
2010 - Czech
Great amount of industry wastes lead to the technology which are able to use waste materials as additives to different types of matter or convert industry waste materials to the new basic material. Velké množství průmyslových odpadů vede k rozvoji technologií, které jsou schopné buď odpady využít jako plniva do jiných hmot, nebo mohou průmyslové odpady přímo konvertovat na nový základní materiál.
Keywords:
waste materials; raw materials; geopolymer
Available at various institutes of the ASCR
Inorganic wastes like raw material for geopolymer binders
Great amount of industry wastes lead to the technology which are able to use waste materials as additives to different types of matter or convert industry waste materials to the new basic material.
Optimizing and Evaluating the Biocompatibility of Fiber Composites with CaP Additives
Suchý, Tomáš; Sucharda, Zbyněk; Balík, Karel; Sochor, M.; Bačáková, Lucie
2010 - English
Composite materials based on a polyamide fabric (aramid) and a polydymethyl-siloxane (PDMS) matrix were designed for application in bone surgery. In order to increase the bioactivity, 2, 5, 10, 15, 20 and 25 vol. % of nano/micro hydroxyapatite (HA) and tricalcium phosphate (TCP) were added. The effect of the additives on the biocompatibility was studied. It appears that nano additives have a more favorable effect than micro particles on mechanical properties. For final application of the composites as substitutes for bone tissues, 15 vol. % of nano hydroxyapatite additives is an optimum amount: in this case both the mechanical properties and the biological properties are optimized without distinct changes in the inner structure of the composite.
Keywords:
biocomposites; calcium phosphate; polyamide fibers; polydimethylsiloxane
Available at various institutes of the ASCR
Optimizing and Evaluating the Biocompatibility of Fiber Composites with CaP Additives
Composite materials based on a polyamide fabric (aramid) and a polydymethyl-siloxane (PDMS) matrix were designed for application in bone surgery. In order to increase the bioactivity, 2, 5, 10, 15, 20 ...
The use of mixed waste polymers in thermal treatment with brown coal
Kříž, Vlastimil; Bičáková, Olga; Machač, P.
2010 - English
Samples of brown coal from Jiří Mine alone and its mixtures with waste plastics were gasified on a laboratory scale. Using a thermal-degratation module, inserted in the stream of volatile products of pyrolysis and gasification, energetic gas with with higher hydrogen content was obtained.
Keywords:
brown coal; waste polymers; gasification
Available at various institutes of the ASCR
The use of mixed waste polymers in thermal treatment with brown coal
Samples of brown coal from Jiří Mine alone and its mixtures with waste plastics were gasified on a laboratory scale. Using a thermal-degratation module, inserted in the stream of volatile products of ...
The comparison of the corrosion layers character of 3 samples of Zr1Nb alloys by means of water vapor sorption
Weishauptová, Zuzana
2010 - Czech
The performed study is aimed on the comparison of ZrO2 corrosion layers by means of the analysis of water vapour sorption isotherms together with microhardness determination. Provedená studie je zaměřena na porovnání charakteru korozních vrstev ZrO2 s pomocí analýzy sorpčních izoterem vodní páry spolu se stanovením mikrotvrdostí.
Keywords:
zirconium alloys; corrosion layer; hydrated ZrO2
Available at various institutes of the ASCR
The comparison of the corrosion layers character of 3 samples of Zr1Nb alloys by means of water vapor sorption
The performed study is aimed on the comparison of ZrO2 corrosion layers by means of the analysis of water vapour sorption isotherms together with microhardness determination.
Examples of influence of structural conditions on landslide development in Beskydy and Vsetínské vrchy Mountains
Rybář, Jan; Klimeš, Jan
2009 - Czech
The influence of structural conditions on slope stability in the Western Carpathians flysh region was described and assessed using results of systematic engineering-geological mapping. S využitím výsledků systematického inženýrskogeologického mapování svahových deformací v měřítku 1 : 10 000 je na vybraných příkladech analyzován vliv strukturně geologických poměrů na stabilitu svahů v regiónu flyše Západních Karpat.
Keywords:
structurally controlled slope movements; flysh; West Carpathians
Available at various institutes of the ASCR
Examples of influence of structural conditions on landslide development in Beskydy and Vsetínské vrchy Mountains
The influence of structural conditions on slope stability in the Western Carpathians flysh region was described and assessed using results of systematic engineering-geological mapping.
Indirect stress measurement by static vertical pendulum
Kalenda, Pavel; Neumann, L.; Wandrol, I.
2009 - English
Static pendulums were used for indirect stress measurement in Bohemian Massif. The anomalous tilt and/or noise were recognised before the biggest earthquakes on the Euroasian lithospheric plate. The Kurile EQ (24.11.2008) was predicted a day advance.
Keywords:
stress; earthquake; pendulum
Available at various institutes of the ASCR
Indirect stress measurement by static vertical pendulum
Static pendulums were used for indirect stress measurement in Bohemian Massif. The anomalous tilt and/or noise were recognised before the biggest earthquakes on the Euroasian lithospheric plate. The ...
The use and disposal of the cinders from wooden masses and bio-wastes combustion
Hanzlíček, Tomáš; Perná, Ivana
2009 - Czech
The results of the 2009 year were focused on knowledge showing and proving that the bio-cinders do not contain the toxic or dangerous elements. Their composition of calcium and potassium salts predestinates the ashes as fertilizers. The composition of offered fertilizer was protected by patent proposal. Výstupem práce v roce 2009 je návrh na využití v rámci poznání, že popely neobsahují žádné toxické látky a naopak jejich obsah vápníku a draslíku je předurčuje k výrobě organicko-minerálního hnojiva. Jeho kompozice a způsob výroby je chráněn podaným průmyslovým vzorem a návrhem na udělení patentu.
Keywords:
bio-cinders; composition; combustion
Available at various institutes of the ASCR
The use and disposal of the cinders from wooden masses and bio-wastes combustion
The results of the 2009 year were focused on knowledge showing and proving that the bio-cinders do not contain the toxic or dangerous elements. Their composition of calcium and potassium salts ...
Developments strenght attained of the system metakaolinite – podium aluminite - quartz
Hájek, Pavel; Koloušek, D.; Andertová, J.
2009 - 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) and quartz. As a result reaction is rise the zeolite phase (zeolite A) inside of relevant substance. The zeolite phase, temperature dressing materials and hydrothermal exposition influence developments strength. 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) a křemene. Jako výsledek reakce je objevení zeolitové fáze (zeolit A) v dané hmotě. Zeolitová fáze, tepelná úprava materiálu a hydrotermální expozice ovlivňuje trendy pevnosti. Výsledky reakce byli potvrzeny pomocí XRD a SEM.
Keywords:
geopolymer reactions; alkali reaction
Available at various institutes of the ASCR
Developments strenght attained of the system metakaolinite – podium aluminite - quartz
/: 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 ...
Biocompatibility optimization of fabric composites by calcium phosphates
Sochor, M.; Balík, Karel; Suchý, Tomáš; Sucharda, Zbyněk
2009 - English
Composite materials based on a polyamide fabric and a polydimethylsiloxane matrix were designed for application in bone surgery. In order to increase the bioactivity, 2, 5, 10, 15, 20 and 25 vol. % of nano/micro hydroxyapatite and tricalcium phosphate were added. The effect of the additives on the mechanical properties was studied. Simultaneously, changes in the inner structure of the composites were investigated by means of image analysis.
Keywords:
polydimethylsiloxane; aramid; hydroxyapatite
Available at various institutes of the ASCR
Biocompatibility optimization of fabric composites by calcium phosphates
Composite materials based on a polyamide fabric and a polydimethylsiloxane matrix were designed for application in bone surgery. In order to increase the bioactivity, 2, 5, 10, 15, 20 and 25 vol. % of ...
High pressure adsorption of HCI from gaseous mixture on artificial sorbent materials
Machač, P.; Balíček, P.; Bradáčová, K.; Koza, V.; Přibyl, Oldřich
2009 - Czech
High temperature adsorption of HCl was applied on simulated generator gas.The artificial sorption materials were based on CaO-Al2O3. Vysokoteplotní adsorpce HCl byla aplikována na modelovém plynu, který simuloval generátorový plyn vyráběný ze spalin dřeva. Pro adsorpci byly použíty uměle připravené sorbenty na bázi CaO-Al2O3.
Keywords:
flow gas; adsorption; HCl
Available at various institutes of the ASCR
High pressure adsorption of HCI from gaseous mixture on artificial sorbent materials
High temperature adsorption of HCl was applied on simulated generator gas.The artificial sorption materials were based on CaO-Al2O3.
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