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Приказ резултата 21-30 од 55
Removal of aqueous phenol and phenol derivatives by immobilized potato polyphenol oxidase / Uklanjanje fenola i fenolnih derivata iz vode imobilizovanom polifenol-oksidazom iz krompira
(Serbian Chemical Soc, Belgrade, 2011)
Phenols containing halogens, which tend to deactivate the aromatic nuclei, constitute a significant category of highly toxic and difficult-to-degrade pollutants, which arise from a wide variety of industries. The main ...
Influence of chemical agents on the surface area and porosity of active carbon hollow fibers / Uticaj hemijskih agenasa na specifičnu površinu i poroznost aktivnih ugljeničnih šupljih vlakana
(Serbian Chemical Society, 2011)
Active carbon hollow fibers were prepared from regenerated polysulfone hollow fibers by chemical activation using: disodium hydrogen phosphate 2-hydrate, disodium tetraborate 10-hydrate, hydrogen peroxide, and diammonium ...
Synthesis of 5-(substituted phenylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones from ethyl 3-oxo-2-(substituted phenylazo)butanoates / Sinteza 5-(supstituisanih fenilazo)-6-hidroksi-4-metil-3-cijano-2-piridona iz etil-3-okso-2-(supstituisanih fenilazo)butanoata
(Serbian Chemical Society, 2011)
A new procedure for the synthesis of known azo pyridone dyes is presented. A series of 5-(substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones were prepared from ethyl 3-oxo-2-(substituted phenylazo)butanoates and ...
Impact of the modification of carbon-supported, Pt-based catalysts by irreversibly adsorbed Sn, Ru and Rh on ethanol oxidation / Uticaj modifikacije platinskih nanokatalizatora ireverzibilnom adsorpcijom Sn, Ru i Rh na oksidaciju etanola
(Serbian Chemical Society, 2011)
The oxidation of ethanol was studied at Snad-, Ruad- and Rhad-modified and unmodified PtC, Pt3Sn/C and Pt3Ru2/C catalysts. Potentiodynamic, quasi-steady-state and chronoamperometric measurements were used to investtigate ...
Microwave synthesis and characterization of Pt and Pt-Rh-Sn electrocatalysts for ethanol oxidation / Mikrotalasna sinteza i karakterizacija Pt i Pt-Rh-Sn katalizatora za oksidaciju etanola
(Serbian Chemical Society, 2011)
Carbon-supported Pt and Pt-Rh-Sn catalysts were synthesized by the microwave-polyol method in ethylene glycol solution and were investigated in the ethanol electro-oxidation reaction. The catalysts were characterized in ...
Chemical composition of white currant seed extract / Hemijski sastav ekstrakta semenki bele ribizle
(Serbian Chemical Soc, Belgrade, 2011)
From the seeds of white currant (Ribes rubrum, cv. White Champagne), a new sesquiterpenoid glycoside 1 was isolated, along with two known compounds: dihydrophaseic acid 3'-O-b-D-glucopyranoside (2), and 3-carboxymethyl-i ...
Optimization of the growth and α-amylase production of Bacillus subtilis IP 5832 in shake flask and laboratory fermenter batch cultures / Optimizacija rasta i produkcije α-amilaze Bacillus subtilis IP 5832 u šaržnim kulturama u erlenmajeru i laboratorijskom fermentoru
(Serbian Chemical Soc, Belgrade, 2011)
Cell growth and the level of α-amylase in response to the carbon and nitrogen sources used for the growth of the strain Bacillus subtilis IP 5832 were examined. Based on the amylase productivity level in shake flask cultures ...
Development directions of packaging made from polymer materials / Pravci razvoja ambalaže od polimernih materijala
(Association of Chemical Engineers of Serbia, 2011)
World packaging market achieves turnover of about $620 billion per year with one third of this amount being associated with packaging made from polymer materials. It is expected that this kind of packaging consumption will ...
Zymogenic Bacillus sp. revealed in Aleksinac (Serbia) oil shale
(Journal of Environmental Protection and Ecology, 2011)
The déminéralisation experiments are aimed at preparing native sedimentary organic matter concentrates, consisting mainly of insoluble kerogen. Initial desilicification experiments of three Aleksinac (Serbia) oil shale ...
Geochemical and Statistical Methods in the Evaluation of Trace Elements Contamination: an Application on Canal Sediments
(Hard, Olsztyn 5, 2011)
The contamination levels of V, Cr, Ni, Cu, Zn, Cd, and Pb in canal sediments (Danube alluvial formation) were assessed to evaluate environmental quality and potential contamination. Results indicate that silicates and ...