No (320)
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Electron paramagnetic (spin) resonance spectroscopy (EPR/ESR) of free radicals and antioxidants in plants
Stopka, Pavel; Křížová, Jana
2006 - English
We studied reactive oxygen and nitrogen reactive species (ROS, RNS) using EPR spectroscopy in plants. We proved the antioxidation capacity of moravian wines and interaction of humic acid complexes with selected paramagnetic transition metals. Studovali jsme reaktivní kyslíkové a dusíkové částice (ROS, RNS) metodou EPR spektroskopie v rostlinách. Měřili jsme antioxidační kapacitu moravských vín a interakce huminových kyselin s vybranými paramagnetickými přechodnými kovy.
Keywords:
free radicals
Available at various institutes of the ASCR
Electron paramagnetic (spin) resonance spectroscopy (EPR/ESR) of free radicals and antioxidants in plants
We studied reactive oxygen and nitrogen reactive species (ROS, RNS) using EPR spectroscopy in plants. We proved the antioxidation capacity of moravian wines and interaction of humic acid complexes ...
Electrodes for electrochromic devices studied by EQCM
Špičák, P.; Svoboda, V.; Sedlaříková, M.; Vondrák, Jiří; Kazelle, J.
2006 - English
The crystal surface with the layer is exposed to the electrolyte in a three-electrode systems, usuallydriven by potentiostat. This frequency change is used for detection ofchemical changes of the electrode surface.This system is very sensitive. Studium kointerkalace rozpouštědel do WO3 vrstev ukázalo přítomnost H3O+ v materiálu po interkalaci iontů
Keywords:
electrodes for electrochromic; EQCM
Available at various institutes of the ASCR
Electrodes for electrochromic devices studied by EQCM
The crystal surface with the layer is exposed to the electrolyte in a three-electrode systems, usuallydriven by potentiostat. This frequency change is used for detection ofchemical changes of the ...
Manganese oxide/carbon-based electrocatalysts for ORR in alakaline medium: ORR mechanism
Roche, I.; Chainet, E.; Chatenet, M.; Vondrák, Jiří
2006 - English
The aim of the present paper is to elucidate, in complement of the activity evalution, the ORR mechanism on these electrocatalysts in alkaline medium. Produkt spolupráce na bázi bilatelární dohody AVČR – CNRS na námět elektrokatalyzátory pro palivové články.
Keywords:
fuel cells
Available at various institutes of the ASCR
Manganese oxide/carbon-based electrocatalysts for ORR in alakaline medium: ORR mechanism
The aim of the present paper is to elucidate, in complement of the activity evalution, the ORR mechanism on these electrocatalysts in alkaline medium....
Properties of NaClO4 PMMA based gel electrolytes
Nováček, T.; Vondrák, Jiří; Sedlaříková, M.; Šiková, P.
2006 - English
For applications of polymer gel electrolytes it is necessary to know his electrical parameters, for instance the specific conductivity. Studium elektrické vodivosti uvedených gelových elektrolytů.
Keywords:
lithium polymer electrolytes
Available at various institutes of the ASCR
Properties of NaClO4 PMMA based gel electrolytes
For applications of polymer gel electrolytes it is necessary to know his electrical parameters, for instance the specific conductivity....
Materiály pro kladnou elektrodu palivového článku
Novák, V.; Brudná, S.; Barath, P.; Vondrák, Jiří; Sedlaříková, M.
2006 - Czech
Vzorky se lišily přímšsemi solí kovových prvků. Takto získané katalyzátory byly zkoumány metodou cyklické voltametrie a získaná data byla zpracovávána logaritmickou analýzou a výpočtem tzv. onset potenciálu. New development in non-platinum electrocatalysts for oxygen electrode in alkaline fuel cell.
Keywords:
fuel cells; positive electrodes
Available at various institutes of the ASCR
Materiály pro kladnou elektrodu palivového článku
Vzorky se lišily přímšsemi solí kovových prvků. Takto získané katalyzátory byly zkoumány metodou cyklické voltametrie a získaná data byla zpracovávána logaritmickou analýzou a výpočtem tzv. onset ...
Degradation of 4-chlorophenol by iron oxide nanopasticles
Bakardjieva, Snejana; Štengl, Václav; Šubrt, Jan; Houšková, V.; Kalenda, P.
2006 - English
Degradation of 4-chlorophenol by iron oxide nanopasticles. Degradace 4-chlorofenolu s oxidem železitým.
Keywords:
nanopasticles
Available at various institutes of the ASCR
Degradation of 4-chlorophenol by iron oxide nanopasticles
Degradation of 4-chlorophenol by iron oxide nanopasticles.
Degradace 4-chlorofenolu s oxidem železitým.
Elastic proton conducting inorganic-organic electrolytes
Míka, M.; Mašínová, M.; Švarcová, S.; Paidar, M.; Bouzek, K.; Klápště, Břetislav; Vondrák, Jiří
2006 - English
A polymeric electrolyte was synthetised and its properties were tested in a laboratory hydrogen – oxygen fuel cell at moderately increased temperature. The poymer is based on organosilicates modified by phosphoric acid. Byl synthetisován polymerní elektrolyt na bázi organokřemičitých sloučenin modifikovaných kyselinou fosforečnou. Materiál, vyznačující se protonovou vodivostí, byl testován v laboratorním palivovém článku při mírně zvýšených teplotách.
Keywords:
inorganic-organic electrolytes
Available at various institutes of the ASCR
Elastic proton conducting inorganic-organic electrolytes
A polymeric electrolyte was synthetised and its properties were tested in a laboratory hydrogen – oxygen fuel cell at moderately increased temperature. The poymer is based on organosilicates modified ...
Antionic ionex membranes
Vondrák, Jiří; Sedlaříková, M.; Barath, P.; Novák, V.; Kliment, J.
2006 - English
An anionic ion exchanging membrane was synthetised by a reaction of polyepichlorhydrine and DABCO (diazobicyclooctane) with networking agents. It is not blocked by carbonate ions. Reakcí polyepichlorhydrinu a DABCO (diazobicyklooktanu) se síťovacími činidly byl připraven iontoměnič anexového typu a byla z něho vytvořena membrána pro palivový článek, vyztužená polypropylenovou sítí. Membrána je odolná proti zablokování karbonátovými ionty.
Keywords:
Antionic ionex membranes
Available at various institutes of the ASCR
Antionic ionex membranes
An anionic ion exchanging membrane was synthetised by a reaction of polyepichlorhydrine and DABCO (diazobicyclooctane) with networking agents. It is not blocked by carbonate ions....
The electrochemical redox processes in the lyotropic liquid crystals,
Uhlířová, T.; Reiter, Jakub; Owen, J.R.
2006 - English
Electrochemical behaviour of ferrocene was studied in the medium of lyotropic liquid crystals, which serve as a matrix for the preparation of nanostructured compounds (metals and oxides). Diffusion coefficient and half-wave potential of ferrocene was determined. Bylo studováno elektrochemické chování ferrocenu v prostředí lyotropních kapalných krystalů, které slouží jako matrice pro přípravu nanostrukturních látek (kovů a oxidů). Byl stanoven difúzní koeficient ferrocenu a jeho půlvlnový potenciál.
Keywords:
Aqueous batteries
Available at various institutes of the ASCR
The electrochemical redox processes in the lyotropic liquid crystals,
Electrochemical behaviour of ferrocene was studied in the medium of lyotropic liquid crystals, which serve as a matrix for the preparation of nanostructured compounds (metals and oxides). Diffusion ...
Electrochromic effect in vanadium pentoxide thin films
Macalík, M.; Matěj, A.; Sedlaříková, M.; Vondrák, Jiří
2006 - English
The preparation of SnO2 based layers by spray method seems interesting for the technology as no vacuum is necessary for it. Vanadium oxide films were dip-coated on FTO layers. Studium přípravy a vlastností elektrod V2O5 připravených nízkoteplotními postupy bez vakua.
Keywords:
electrochromism
Available at various institutes of the ASCR
Electrochromic effect in vanadium pentoxide thin films
The preparation of SnO2 based layers by spray method seems interesting for the technology as no vacuum is necessary for it. Vanadium oxide films were dip-coated on FTO layers....
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