National Repository of Grey Literature 215 records found  beginprevious206 - 215  jump to record: Search took 0.02 seconds. 
Supramolekulární variace založené na kobalt bis(dokarbollidovém) iontu(1-)
Grüner, Bohumír ; Mikulášek, Libor ; Báča, Jiří ; Císařová, I. ; Bőhmer, V.
Continuing interest in the development of liquid-liquid extraction and biomedicinal applications of [(1,2-C2B9H11)-3-Co]- anion (1), studied systematically in collaboration with other Groups, prompted us to explore the scope and limitations to create molecular systems containing several hydrophobic anions covalently bound together by simple organic bridging moieties or pre-organized on various supramolecular platforms.
Nukleofilní B-arylace na monokarbadodekaboranovém skeletu katalyzovaná Li (+)
Janoušek, Zbyněk ; Lehman, U. ; Častulík, J. ; Michl, J.
We are interested in the 12-vertex closo-carborane CB11H12- 1 with aryl substituents in positions 1 and 12, and its permethylated derivative, CHB11Me11- 2, in connection with the synthesis of rod like structures.
Chemie klastrových boranový analogů cyklopentadienidového aniontu a ferrocenu
Štíbr, Bohumil
Isomeric tricarbollide and phosphacarbollide anions of general nido structures [7,8,9-E3B8H8](1-) and [7,8,10-E3B8H8](2-)are borane-cluster analogues of the cyclopentadienide anions as they are monoanionic and contain an open pentagonal face capable of donatig five electrons into the metal shell.
Materials research report - Dying Hyrnéthó in the arms of Déiphotos. (oil on canvas), Franz Caucig 1755-1828. Castle Velké Losiny
Hradilová, J. ; Hradil, David ; Šímová, Veronika
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-paints involving to choose the suitable restoration procedure. Other methods (e.g. infrared spectroscopy or MALDI-TOF) are used for identification of binding media.
Materials research report - Themistokles looks for a haven besides the king Admétus (oil on canvas), Franz Caucig 1755-1828. Castle Velké Losiny
Hradilová, J. ; Hradil, David ; Šímová, Veronika
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-paints involving to choose the suitable restoration procedure. Other methods (e.g. infrared spectroscopy or MALDI-TOF) are used for identification of binding media.
Materials research report - Tomyris (oil on canvas), Ministry of Culture in Prague
Hradilová, J. ; Hradil, David ; Šímová, Veronika ; Bezdička, Petr ; Kučková, Štěpánka
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-paints involving to choose the suitable restoration procedure. Other methods (e.g. infrared spectroscopy or MALDI-TOF) are used for identification of binding media.
Materials research report - Funerál Insignias from tombs in the Prague Castle. (polychromy on wood), Prague Castle - Office of the President of the Czech Republic
Hradilová, J. ; Hradil, David ; Šímová, Veronika ; Bezdička, Petr ; Kučková, Štěpánka
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-paints involving to choose the suitable restoration procedure. Other methods (e.g. infrared spectroscopy or MALDI-TOF) are used for identification of binding media.
Evaluation of the electrolytic methods for separation of thallium from ammonium aluminium sulphate solutions
Hostomský, Jiří ; Hostomská, Věra
Experimental evaluation of the methods enabling removal of thallous ions from saturated solutions of technical-grade ammonium aluminium sulphate by means of electrolysis - deposition of thallic oxide at the anode and cathodic reduction to metallic thallium. The effect of anode / cathode separation and the effect of the presence of iron and chloride ions in ammonium aluminium sulphate solution was investigated.
Podmínky pro vysokou citlivost detekce a separační účinnost při separacích klastrových aniontů boru
Horáková, Hana ; Grüner, Bohumír ; Vespalec, Radim
The knowledge of UV-VIS spectra of investigated compounds is neccessary for the optimisation of detection sensitivity. The symmetry and narrow width of migrating zones require substantially improved dissolving power of the sample solvent and background electrolyte. Sodium borate buffer of pH 9.5 is more proper for separations of boron cluster anions in uncouted capillaries then sodium phosphate buffer of pH of 7. Decrease of mobilities of boron cluster anions with time has been found in chiral separations with .beta-CD if acetonitrile was present in background electrolyte

National Repository of Grey Literature : 215 records found   beginprevious206 - 215  jump to record:
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