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Laboratory research report. Black Mother of God. Gallery of the City of Prague
Hradilová, J.; Hradil, David; Hradecká, P.
2001 - 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-nts 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. Black Mother of God. Gallery of the City of Prague
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 ...
Research and development of the process for production of extra pure ammonium aluminium sulphate II
Rodová, A.; Hora, L.; Bezucha, P.; Synek, V.; Kokšal, J.; Hodslavská, J.; Hostomský, Jiří; Hostomská, Věra
2001 - Czech
295 Research and development of the process for production of extra pure ammonium aluminium sulphate, where the concentration of contaminants does not exceed 0.3 ppm for Ca, Co, Cr, Fe, Mg, Mn, Pb, Si, Ti, Zn, 2.0 ppm for Ga and Na and 3.0 ppm for K. Preparation of ammonium aluminium sulphate (alum) solution by dissolution of aluminium hydroxide in sulphuric acid solution and by addition of ammonia. Purification of alum by crystallization and recrystallization. Výzkum a vývoj technologie výroby vysoce čistého krystalického síranu amonno-hlinitého, kde koncentrace kontaminantů Ca, Co, Cr, Fe, Mg, Mn, Pb, Si, Ti, Zn nepřevýší 0,3 ppm, Ga a Na 2,0 ppm a K 3,0 ppm. Příprava roztoku síranu hlinitoamonného (kamence) rozpouštěním hydroxidu hlinitého v kyselině sírové a následnou amoniakalizací. Čistění kamence krystalizací a rekrystalizací.
Keywords:
ammonium aluminium sulphate; purification; crystallization
Available at various institutes of the ASCR
Research and development of the process for production of extra pure ammonium aluminium sulphate II
295 Research and development of the process for production of extra pure ammonium aluminium sulphate, where the concentration of contaminants does not exceed 0.3 ppm for Ca, Co, Cr, Fe, Mg, Mn, Pb, ...
Laboratory research report. The frescoes (secco)in the Minoric house in Český Krumlov
Hradilová, J.; Hradil, David
2001 - 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-nts 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 předmaleb, což přispívá ke sprvné volbě restaurátorského postupu. Další, zejména mikrochemické a histochemické metody jsou použity k identifikaci pojiv.
Keywords:
paintings; restoration
Available at various institutes of the ASCR
Laboratory research report. The frescoes (secco)in the Minoric house in Český Krumlov
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 ...
Relations between structure, morphology a mechanical properties of cerianite based polishing powders
Bezdička, Petr; Grygar, Tomáš; Bakardjieva, Snejana; Petřina, Antonín; Augustová, Ivana
2001 - Czech
We studied relationships between structure, morphology a mechanical properties of cerianite based polishing powders. Byly studovány vztahy mezi strukturou, morfologií a mechanickými vlastnostmi lešticích prášků na bázi CeO2.
Keywords:
structure; morphology; cerianite
Available at various institutes of the ASCR
Relations between structure, morphology a mechanical properties of cerianite based polishing powders
We studied relationships between structure, morphology a mechanical properties of cerianite based polishing powders.
EPR study of beer samples and brewing materials
Stopka, Pavel
2000 - Czech
Hydroxyl (OH.), nitroxide (NO.)and stable organic free radicals were identified and determined in samples of beer. The maximum of their concentration is 5-10 min. after the opening of bottle. The influence of UV irradiation and hydrogen peroxide is de Ve vzorcích byly identifikovány a stanoveny hydroxylové (OH.), nitroxidové (NO.) a stabilní organické radikály. Koncentrace těchto radikálů vykazuje maximum po 5-10 min. od otevření láhve. Je popsán vliv UV ozařování a vliv peroxidu vodíku.
Keywords:
Free Radicals; Yeast; Beer
Available at various institutes of the ASCR
EPR study of beer samples and brewing materials
Hydroxyl (OH.), nitroxide (NO.)and stable organic free radicals were identified and determined in samples of beer. The maximum of their concentration is 5-10 min. after the opening of bottle. The ...
Material research of the sculptural group of St. Vincent from Ferrera and St. Prokop, Charles Bridge, Prague
Svobodová, J.; Hradil, David; Přikryl, R.
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. Vincent from Ferrera and St. Prokop, 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 research report. St. Roch (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. St. Roch (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 ...
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.
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