Претраживање
Приказ резултата 1-10 од 47
On the choice of optimal conformation in linear free-energy relationships. Reactivity of 2-[(carboxymethyl)sulfanyl]-4-oxo-4-arylbutanoic acids with diphenyldiazomethane
(Pergamon-Elsevier Science Ltd, Oxford, 2012)
Rate constants for the esterification of eleven 2-[(carboxymethyl)sulfanyl]-4-oxo-4-arylbutanoic acids with diphenyldiazomethane in ethanol at 30 degrees C were determined, and correlated with substituent constants using ...
Methods for monitoring of pesticide residues in water: current status and recent trends
(Iwa Publishing, London, 2012)
An overview of analytical methods currently used for the determination of pesticide residues in water samples is presented. As liquid chromatography and gas chromatography, coupled to mass spectrometry, are considered to ...
The kinetics of the hydrogen oxidation reaction on WC/Pt catalyst with low content of Pt nano-particles
(Elsevier Science Sa, Lausanne, 2012)
The catalytic activity of WC/Pt electrocatalysts towards hydrogen oxidation reaction (HOR) in acid solution was studied. Tungsten carbide (WC) prepared by polycondensation of resorcinol and formaldehyde in the presence of ...
Synthesis, structure and solvatochromic properties of some novel 5-arylazo-6-hydroxy-4-phenyl-3-cyano-2-pyridone dyes
(Springeropen, London, 2012)
Background: A series of some novel arylazo pyridone dyes was synthesized from the corresponding diazonium salt and 6-hydroxy-4-phenyl-3-cyano-2-pyridone using a classical reaction for the synthesis of the azo compounds. ...
Chemical and Antimicrobial Evaluation of Supercritical and Conventional Sideritis scardica Griseb., Lamiaceae Extracts
(MDPI, Basel, 2012)
Sideritis scardica Griseb., Lamiaceae (ironwort, mountain tea), an endemic plant of the Balkan Peninsula, has been used in traditional medicine in the treatment of antimicrobial infections, gastrointestinal complaints, ...
Experimental determination and modeling of densities and refractive indices of the binary mixtures of dimethylphthalate (or dimethyladipate)+1-butanol, or+2-butanol, or+2-butanone at T=(288.15-323.15) K
(Elsevier Science Bv, Amsterdam, 2012)
The experimental density rho and refractive index n(D) of the six binary mixtures of dimethylphthalate and dimethyladipate with 1-butanol, 2-butanol and 2-butanone have been determined. All measurements of rho and n(D) ...
Covalently immobilized lipase catalyzing high-yielding optimized geranyl butyrate synthesis in a batch and fluidized bed reactor
(Elsevier, Amsterdam, 2012)
Three commercially available polymers (Sepabeads (R) EC-EP, Sepabeads (R) EC-HA and Purolite (R) A-109) were tested for potential application as supports for covalent immobilization of lipase from Candida rugosa by analyzing ...
Pharmaceutical residues in the Danube River Basin in Serbia - a two-year survey
(Iwa Publishing, London, 2012)
Pharmaceuticals are emerging contaminants with damaging effects to the environment and human health. Their presence in surface and especially groundwaters is regarded as detrimental, as they can ultimately reach drinking ...
Synthesis, structural and biological characterization of 5-phenylhydantoin derivatives as potential anticonvulsant agents
(Springer Wien, Wien, 2012)
Considering the importance of hydantoin derivatives in treatment of status epilepticus, four 5-phenylhydantoins, whose lipophilicities were estimated to be similar to that of phenytoin, were synthesized. Evaluation of their ...
Formation of nano-plate silver particles in the presence of polyampholyte copolymer
(Elsevier Science Bv, Amsterdam, 2012)
Poly(2-(dimethylamino)ethyl methacrylate-co-acrylic acid) polyampholyte copolymers were synthesized by radical polymerization of the co-monomers in different molar ratios (2-1, 1-1 and 1-2). The water solutions of the ...