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Phase equilibria at crystallization of ammonium aluminium alum
Hostomský, Jiří; Hostomská, Věra; Velická, Jana
2000 - Czech
Data concerning phase equilibria (solubilities) of ammonium aluminium alum under the conditions significant for industrial crystallization of the alum were summarized from literature. These data were succesfully checked up for solutions of aluminium a ammonium sulphates (without addition of sulphuric acid). New data for these solutions with additon of sulphuric acid (about 8
Keywords:
solubility; phase equilibria; ammonium aluminium sulphate
Available at various institutes of the ASCR
Phase equilibria at crystallization of ammonium aluminium alum
Data concerning phase equilibria (solubilities) of ammonium aluminium alum under the conditions significant for industrial crystallization of the alum were summarized from literature. These data were ...
Study of the effect of the circulation pump on the Calcium nitrate tetrahydrate crystal size. Comments to the technical tender by Messo, No. 96-014/00 rev. 0
Nývlt, Jaroslav
2000 - Czech
Engineering analysis of the effect of the circulation pump Swenson on the destruction of calcium nitrate tetrahydrate crystals in the NP slurry obtained in the production of combined NPK fertilizers in Lovochemie Lovosice; criticizm of the tender by Messo (Germany) with the emphasis of the attainable crystal size. Chemicko-inženýrské posouzení vlivu cirkulačního čerpadla fy. Swenson na destrukci krystalů tetrahydrátu dusičnanu vápenatého v tzv. NP břečce při výrobě kombinovaných hnojiv NPK v a.s. Lovochemie Lovosice a posouzení návrhu fy. Messo (SRN) s ohledem na střední velikost získaných krystalů.
Keywords:
hnojiva; krystaly
Available at various institutes of the ASCR
Study of the effect of the circulation pump on the Calcium nitrate tetrahydrate crystal size. Comments to the technical tender by Messo, No. 96-014/00 rev. 0
Engineering analysis of the effect of the circulation pump Swenson on the destruction of calcium nitrate tetrahydrate crystals in the NP slurry obtained in the production of combined NPK fertilizers ...
Analysis of R 4241 F Pigments
Bezdička, Petr; Boháček, Jaroslav; Grygar, Tomáš; Štengl, Václav; Bakardjieva, Snejana
2000 - Czech
We analysed pigments of the R 4241 F type. Byly analyzovány pigmenty R 4241 F.
Keywords:
analysis; red; pigments
Available at various institutes of the ASCR
Analysis of R 4241 F Pigments
We analysed pigments of the R 4241 F type.
Relations between structure and mechanical properties of polishing powders based on CeOsub2/sub
Bezdička, Petr; Petřina, Antonín; Večerníková, Eva
2000 - Czech
We studied the polishing powders based on CeOsub2/sub and its mechanical properties. Byla studována leštiva na bázi CeOsub2/sub a vztahy mezi strukturou a mechanickými vlastnostmi.
Keywords:
structure; polishing; Cerianite
Available at various institutes of the ASCR
Relations between structure and mechanical properties of polishing powders based on CeOsub2/sub
We studied the polishing powders based on CeOsub2/sub and its mechanical properties.
Material research of the sculptural group of St. John from Matha, St. Felix from Valois and St. Ivan, Charles Bridge, Prague
Svobodová, J.; Hradil, David; Přikryl, R.; Šimek, O.
2000 - Czech
Determined mineralogical and chemical composition of the surface layers of sandstone sculptures was interpreted as the result of the weathering processes in the past. The influence of atmospherical pollution and previous restoration and conservation of the stone was discussed. Mineralogicko-chemický průzkum povrchových vrstev pískovcové sochy byl zaměřen na projevy zvětrávání v prostředí městské atmosféry a vedl k diskusi o možných procesech v minulosti i vlivem dřívějších restaurátorských zásahů.
Available at various institutes of the ASCR
Material research of the sculptural group of St. John from Matha, St. Felix from Valois and St. Ivan, Charles Bridge, Prague
Determined mineralogical and chemical composition of the surface layers of sandstone sculptures was interpreted as the result of the weathering processes in the past. The influence of atmospherical ...
Laboratory studies of paintings and fine art materials in 2000
Hradil, David; Bakardjieva, Snejana; Bezdička, Petr; Petřina, Antonín; Šubrt, Jan
2000 - Czech
When restoring historical paintings and sculptures, some removed fragments have been measured using electron microanalysis and X-ray diffraction methods. Results obtained from this material research were used to identify the original ground and painting layers and to choose the suitable restoration procedure. Vzorky odebrané v rámci restaurátorských zásahů byly analyzovány metodami elektronové mikroanalýzy a RTG-difrakční analýzy. Interpretace výsledků přispěly k identifikaci původních vrstev, procesů následných změn a k volbě postupu restaurování.
Available at various institutes of the ASCR
Laboratory studies of paintings and fine art materials in 2000
When restoring historical paintings and sculptures, some removed fragments have been measured using electron microanalysis and X-ray diffraction methods. Results obtained from this material research ...
Comparative study of Synhydrid and its derivatives from the point of view of their reactivities and selectivities
Černý, Zbyněk; Kříž, Otomar; Macháček, Jiří; Čásenský, Bohuslav
2000 - Czech
Analytical study of commercial product Synhydrid considering impurities affecting reduction properties has been made. The reduction study of this complex hydride has been aimed to such reaction of model compounds where is no unambiguous course (reduction of conjugated system -C=C-C=O), or reaction yield is not quantitative even in high excess of hydride (alkyl and arylhalogenides).
Available at various institutes of the ASCR
Comparative study of Synhydrid and its derivatives from the point of view of their reactivities and selectivities
Analytical study of commercial product Synhydrid considering impurities affecting reduction properties has been made. The reduction study of this complex hydride has been aimed to such reaction of ...
Laboratory research report. The Saint - canonical master (polychromed wooden sculpture) in the church of St. Nicolas in Bílovec
Hradilová, J.; Hradil, David
2000 - Czech
Pre-restoration materials research of the painting is based on microscopic (both optical and electron) analyses of grounds and painting layers in the cross-sections of fragments with the aim to identify pigments and to describe the stratigraphy of re-ts involving to choose the suitable restoration procedure. Other methods (e.g. microchemical and histochemical tests) are used for identification of binding media. Materiálový průzkum malby v rámci restaurátorského zásahu využívá zejména metod optické a elektronové mikroskopie a mikroanalýzy fragmentárních příčných řezů barevných vrstev k identifikaci pigmentů a popisu stratigrafie přemaleb, což přispívá ke správné volbě restaurátorského postupu. Další, zejména mikrochemické a histochemické metody jsou použity k identifikaci pojiv.
Keywords:
materials research; restoration; painting layers stratigraphy
Available at various institutes of the ASCR
Laboratory research report. The Saint - canonical master (polychromed wooden sculpture) in the church of St. Nicolas in Bílovec
Pre-restoration materials research of the painting is based on microscopic (both optical and electron) analyses of grounds and painting layers in the cross-sections of fragments with the aim to ...
Laboratory studies of the fine art works and materials in 1999
Hradil, David; Bezdička, Petr; Langrová, A.; Petřina, Antonín
2000 - Czech
When restoring historical paintings and sculptures, some removed fragments have been measured using electron microanalysis and X-ray diffraction methods. Results obtained from this material research were used to identify the original ground and painting layers ant to choose the suitable restoration procedure. Vzorky odebrané v rámci restaurátorských zásahů byly analyzovány metodami elektronové mikroanalýzy a RTG-difrakční analýzy. Interpretace výsledků přispěly k identifikaci původních vrstev, procesů následných změn a k volbě postupu restaurování.
Available at various institutes of the ASCR
Laboratory studies of the fine art works and materials in 1999
When restoring historical paintings and sculptures, some removed fragments have been measured using electron microanalysis and X-ray diffraction methods. Results obtained from this material research ...
Laboratory studies of sculpture works and materials in 2000
Hradil, David; Bakardjieva, Snejana; Bezdička, Petr; Petřina, Antonín; Šubrt, Jan
2000 - Czech
When restoring historical paintings and sculptures, some removed fragments have been measured using electron microanalysis and X-ray diffraction methods. Results obtained from this material research were used to identify the original ground and painting layers and to choose the suitable restoration procedure. Vzorky odebrané v rámci restaurátorských zásahů byly analyzovány metodami elektronové mikroanalýzy a RTG-difrakční analýzy. Interpretace výsledků přispěly k identifikaci původních vrstev, procesů následných změn a k volbě postupu restaurování.
Available at various institutes of the ASCR
Laboratory studies of sculpture works and materials in 2000
When restoring historical paintings and sculptures, some removed fragments have been measured using electron microanalysis and X-ray diffraction methods. Results obtained from this material research ...
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