Number of found documents: 400
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New inorganic matrices for pultrusion technology II
Černý, Zbyněk
2016 - English
Development of inorganic matrix enabling rapid continuous preparation of thermally and chemically stable and fire resistant materials with controlled properties for nuclear industry. Keywords: inorganic matrices Available at various institutes of the ASCR
New inorganic matrices for pultrusion technology II

Development of inorganic matrix enabling rapid continuous preparation of thermally and chemically stable and fire resistant materials with controlled properties for nuclear industry.

Černý, Zbyněk
Ústav anorganické chemie, 2016

Nové anorganické materiály stínící ionizující záření
Černý, Zbyněk
2016 - Czech
Laboratorní a pilotní technologie nových anorganických nehořlavých a bezpečných materiálů s vysokými obsahy absorbátorů a moderátorů neutronů pro stínění ionizujícího záření. Laboratory and pilot technology of new inorganic safety and fireproof materials with high content of absorbents and moderators of neutrons for shielding of ionizing radiation. Keywords: inorganic materials; absorbents and moderators of neutrons; ionizing radiation Available at various institutes of the ASCR
Nové anorganické materiály stínící ionizující záření

Laboratorní a pilotní technologie nových anorganických nehořlavých a bezpečných materiálů s vysokými obsahy absorbátorů a moderátorů neutronů pro stínění ionizujícího záření....

Černý, Zbyněk
Ústav anorganické chemie, 2016

12th International Conference Solid State Chemistry 2016 : Book of Abstracts
Lančok, Adriana
2016 - English
This book contains the programme and the abstracts of the conference. The conference programme covers presentations from scientists and users of scientific information working in similar areas, to estabilish platforms for collaborative reseach project initiatives. Keywords: solid state chemistry Available at various institutes of the ASCR
12th International Conference Solid State Chemistry 2016 : Book of Abstracts

This book contains the programme and the abstracts of the conference. The conference programme covers presentations from scientists and users of scientific information working in similar areas, to ...

Lančok, Adriana
Ústav anorganické chemie, 2016

Generation of NPS for Exposure Experiments from Copper Acetylacetone.
Moravec, P.; Schwarz, J.; Vodička, P.; Kupčík, Jaroslav; Švehla, J.
2016 - English
Particles containing copper are emitted from smelters, iron foundries, power stations, and municipal incinerators (WHO, 1998) and also from brake linings during breaking, Kukutschová et al. (2011). Nanoparticles (NPs) of copper are ingredients in polymers, inks, and bioactive coatings inhibiting the growth of microorganisms, Cioffi at al. (2005), and CuO NPs has been used in antimicrobial textiles, Gabbay and Borkow (2006), therefore they can be easily inhaled. Even though CuO NPs were found highly toxic, Karlsson et al. (2008), in vivo studies of their toxicity are still rather rare. In this work we tested a method of long lasting nanoparticle generation from copper acetylacetonate (CuAA) for use in follow up exposure experiments with laboratory animals. The exposure chamber for inhalation experiments was constructed in the Institute of Analytical Chemistry AS CR (Večeřa et al., 2011) and some methods of NPs generation for these experiments were already tested in our laboratory (Moravec et al., 2015, Moravec et al., 2016). Keywords: copper acetylacetonate; hot wall reactor; nanoparticle generation Fulltext is available at external website.
Generation of NPS for Exposure Experiments from Copper Acetylacetone.

Particles containing copper are emitted from smelters, iron foundries, power stations, and municipal incinerators (WHO, 1998) and also from brake linings during breaking, Kukutschová et al. (2011). ...

Moravec, P.; Schwarz, J.; Vodička, P.; Kupčík, Jaroslav; Švehla, J.
Ústav anorganické chemie, 2016

Ecological Applications in Modern Chemistry 2015 : Book of abstracts
Plocek, Jiří
2015 - English
Ecological Applications in Modern Chemistry 2015 is 2nd year of the EAMCH conference. The scope of this conference is focused on all renewable energy sources and environmental aspects of modern chemistry and technologies. Typically it includes: materials for hydrogen fuel cells, ionic conductors, piezoelectric and magnetic materials, materials for solar cells. The lectures deals with practical applications of these technologies, especially with relation with environment (water, atmosphere, etc.) are welcomed too. Keywords: ecology; chemistry Available at various institutes of the ASCR
Ecological Applications in Modern Chemistry 2015 : Book of abstracts

Ecological Applications in Modern Chemistry 2015 is 2nd year of the EAMCH conference. The scope of this conference is focused on all renewable energy sources and environmental aspects of modern ...

Plocek, Jiří
Ústav anorganické chemie, 2015

Sorption properties of graphen oxide and styrene composites for SR-85 and CS-137
Brynych, V.; Kolářová, M.; Pospěchová, J.; Tolasz, Jakub; Štengl, Václav
2015 - English
In the presented work, new composite nanomaterials, based on graphene oxide and styrene, have been developed for the retention purpose. Sr-85 and Cs-137 represent two of the main fission products being present in radioactive wastes from nuclear power cycle. The graphene oxide samples were prepared from natural graphite using high intensity cavitation field in a pressurized (6 bar) batch-ultrasonic reactor. Graphene oxide polystyrene composite was synthesized using direct emulsion polymerization of styrene in the presence of graphene oxide at 90 degrees C. The basic method used for the evaluation of nanomaterial retention properties was batch sorption methodology, based on a contact of solid material with a tracer solution under defined boundary conditions (solid/solution ratio, time, solution composition as pH and ionic strength). Keywords: Graphene oxide; Radionuclides; Sorption Available at various institutes of the ASCR
Sorption properties of graphen oxide and styrene composites for SR-85 and CS-137

In the presented work, new composite nanomaterials, based on graphene oxide and styrene, have been developed for the retention purpose. Sr-85 and Cs-137 represent two of the main fission products ...

Brynych, V.; Kolářová, M.; Pospěchová, J.; Tolasz, Jakub; Štengl, Václav
Ústav anorganické chemie, 2015

New inorganic matrices for pultrusion technology I
Černý, Zbyněk
2015 - English
Development of inorganic matrix enabling rapid continuous preparation of thermally and chemically stable fire resistant technological profiles and components with controlled properties for nuclear industry. Keywords: pultrusion technology; inorganic matrice Available at various institutes of the ASCR
New inorganic matrices for pultrusion technology I

Development of inorganic matrix enabling rapid continuous preparation of thermally and chemically stable fire resistant technological profiles and components with controlled properties for nuclear ...

Černý, Zbyněk
Ústav anorganické chemie, 2015

Antimicrobial activity of cobalt bis(dicarbollide) aminoderivatives
Kvasničková, E.; Masák, J.; Šícha, Václav
2015 - English
We carried out experiments focused on the determination of the antimicrobial acitivity of selected representatives of cobalt bis{dicarbollide) aminoderivates. lt was proved, that studied yeast strain C. parapsilosis DBM 2165 is not sensitive to the cobalt bis{dicarbollide) or its aminoderivatives. Gram-negative bacteria P. aeruginosa B-59188 is weakly susceptive to cobalt bis(dicarbollide), but no significant inhibition of growth by cobalt bis(dicarbollide) aminoderivatives was observed. The highest effect on inhibition of microbial growth was confirmed in the case of gram-positive bacteria 5. aureus. This observation demonstrates the real possibility of using these substances in the treatment of infection caused by gram-positive bacterial strains. Keywords: cobalt bis(dicarbollide); aminoderivatives; antimicrobial activity Available at various institutes of the ASCR
Antimicrobial activity of cobalt bis(dicarbollide) aminoderivatives

We carried out experiments focused on the determination of the antimicrobial acitivity of selected representatives of cobalt bis{dicarbollide) aminoderivates. lt was proved, ...

Kvasničková, E.; Masák, J.; Šícha, Václav
Ústav anorganické chemie, 2015

Tuning the Photophysical Properties of Anti-B18H22 [1]
Braborec, Jakub; Černá, H.; Benkocká, M.; Kolská, Z.; Londesborough, Michael Geoffrey Stephen
2015 - English
The tuning of the photophysical properties of the highly fluorescent boron hydride cluster anti-B18H22 (1), by straight-forward chemical substitution to produce 4,4'-(HS)(2)-anti-B18H20 (2), facilitates intersystem crossing from excited singlet states to a triplet manifold.[1] This subsequently enhances O-2((1)Delta(g)) singlet oxygen production from a quantum yield of Phi(Delta) similar to 0.008 in 1 to 0.59 in 2. This contribution describes the synthesis and full structural characterization of the new compound 4,4'-(HS) 2-anti-B18H20 (2) and uses UV-vis spectroscopy coupled with DFT and ab initio computational studies to delineate and explain its photophysical properties. Additionally, we will report on new fluorescent derivatives of anti-B18H22 and their immobilisation on solid nanostructured substrates. Keywords: borane hydrides; singlet oxygen; fluorescent boranes Available at various institutes of the ASCR
Tuning the Photophysical Properties of Anti-B18H22 [1]

The tuning of the photophysical properties of the highly fluorescent boron hydride cluster anti-B18H22 (1), by straight-forward chemical substitution to produce 4,4'-(HS)(2)-anti-B18H20 (2), ...

Braborec, Jakub; Černá, H.; Benkocká, M.; Kolská, Z.; Londesborough, Michael Geoffrey Stephen
Ústav anorganické chemie, 2015

Investigation of Madonna in the travel altar of Robert of Anjou from the collection of moravian gallery in Brno
Fogaš, I.; Wörgötter, Z.; Hradilová, J.; Hradil, David; Zikmund, T.; Kaiser, J.
2014 - English
An exceptional Gothic work of art, a travel altar of Robert of Anjou, is one of those donated by John II of Liechtenstein to the Franz Museum in Brno in 1896. Light has been newly shed on the circumstances of Prince's acquisition of the altar; it refuted the thoughts about the altar's Central European provenance, because as it is being documented, the purchase took place directly in Florence in 1890. It has been recorded already back then that the Tabernacle is complemented by a (damaged) statuette of Black Madonna made of Carrara marble. The description of its damage, secondary additions and polychromy construction was the main aim of the artwork's survey by non-invasive methods (mobile XRF, computed tomography); on the basis of their results, a careful micro-sampling has been performed followed by material analysis. Most importantly, it was found out that the material of the statue is not Carrara marble, but an alabaster, which is not in disagreement with the assumed provenance (northern Italy), but due to its weight and fragility, the statuette could only hardly be an original part of the altar. Concurrently, the analysis of the oldest layers of polychromy proved that the Madonna has not been originally black and that this adjustment has been executed secondarily and intentionally. Keywords: Black Madonna; travel altar,; alabaster; Gothic art; Florence; Liechtenstein Available at various institutes of the ASCR
Investigation of Madonna in the travel altar of Robert of Anjou from the collection of moravian gallery in Brno

An exceptional Gothic work of art, a travel altar of Robert of Anjou, is one of those donated by John II of Liechtenstein to the Franz Museum in Brno in 1896. Light has been newly shed on the ...

Fogaš, I.; Wörgötter, Z.; Hradilová, J.; Hradil, David; Zikmund, T.; Kaiser, J.
Ústav anorganické chemie, 2014

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