Претраживање
Приказ резултата 591-600 од 639
Design and characterization of alcalase-chitosan conjugates as potential biocatalysts
(Springer, New York, 2017)
In this study, alcalase (protease from Bacillus licheniformis) immobilization by adsorption, enzyme crosslinking and covalent enzyme binding to activated chitosan microbeads were examined. The biocatalysts highest activity ...
The Role of SnO2 on Electrocatalytic Activity of PtSn Catalysts
(Springer, New York, 2018)
In our previous paper, we described in detail studies of Sn influence on electrocatalytic activity of PtSn catalyst for CO and formic acid oxidation (StevanoviAc et al., J. Phys. Chem. C, 118 (2014) 278-289). The catalyst ...
Comparative analytical study of the selected wine varieties grown in Montenegro
(Taylor & Francis Ltd, Abingdon, 2017)
Samples of the selected red wine varieties grown in Montenegro (Merlot, Cabernet Sauvignon and Vranac; vintages 2010-2012) were compared according to total phenolic content, anti-DPPH radical activity, phenolic profile and ...
Strong and weak hydrogen bonds in sm/lsm oligomeric assemblies: a comparison of intra- and interchain interaction
(Inst Materials Physics, Bucharest, 2013)
The Sm and Sm-like (LSm) proteins are a widespread protein family with members in all kingdoms of life. Sm proteins form complexes engaging in various RNA-processing events. Sm proteins do form and act as oligomeric ...
A new triterpenoid saponin from the aerial parts of Cephalaria ambrosioides
(Taylor & Francis Ltd, Abingdon, 2010)
A new allose-containing triterpenoid saponin (1), along with a known saponin (2), were isolated from the aerial parts of Cephalaria ambrosioides. Their structures were determined by spectroscopic (2D-NMR and ESI-MS) methods. ...
Influence of the chemical structure of poly(urea-urethane-siloxane)s on their morphological, surface and thermal properties
(Springer Verlag, 2013)
Segmented poly(urethane-urea-siloxane)s (PUUS) were synthesized using 4,4'-methylenediphenyl diisocyanate (MDI) and ethylene diamine (ED) as the hard segment components and hydroxypropyl-terminated poly(dimethylsiloxane) ...
The effect of meteorological and chemical parameters on summer phytoplankton assemblages in an urban recreational lake
(EDP Sciences, 2017)
The summer phytoplankton community was studied across both vertical and temporal scales in relation to environmental factors in the shallowrecreational Sava Lake. The sampling was conducted weekly at four depths from ...
Assessment of the pseudo total metal content in alluvial sediments from Danube River, Serbia
(Springer, New York, 2011)
We used elemental carbon, nitrogen, hydrogen and sulfur as well as ratios of hydrogen and nitrogen with total organic carbon for investigation of source and conditions of organic matter in alluvial Danube sediments. We ...
Thionation of Some alpha,beta-Unsaturated Steroidal Ketones
(MDPI, 2010)
The reactions of selected alpha,beta-unsaturated steroidal ketones with Lawesson's reagent (LR) in CH(2)Cl(2) and toluene under the standard reaction conditions and with a combination of phosphorus pentasulfide with ...
Evaluation of Hypericum perforatum oil extracts for an antiinflammatory and gastroprotective activity in rats
(Phytotherapy Research, 2009)
Oil extracts of Hypericum perforatum L. (Oleum Hyperici) were prepared in three different ways according to the prescriptions from traditional medicine. Variability of constituents and biological activity were evaluated ...