Претраживање
Приказ резултата 1-10 од 89
Studies of the regioselective ring-opening closing mode of functionally different thiazolidine type enaminones: en route to the synthesis of trithiaazapentalene derivatives
(Oxford : Pergamon-Elsevier Science Ltd, 2013)
Trithiaazapentalene derivatives were prepared by the reaction of 2-alkylidene-4-oxothiazolidines with Lawesson's reagent. They are classified as two structurally different trithiaazapentalene compounds that have different ...
Segregation in water fluidized beds of sand particles
(Elsevier Science Sa, Lausanne, 2013)
Fluidization experiments were conducted on four fractions of filtration (quartz) sand using columns of 144 and 64 mm i.d. The size distribution of the fractions obtained by sieving followed an approximately modified normal ...
Synthesis, cytotoxic activity and DNA-interaction studies of novel anthraquinone-thiosemicarbazones with tautomerizable methylene group
(Elsevier France-Editions Scientifiques Medicales Elsevier, Paris, 2013)
A series of novel anthraquinone thiosemicarbazone derivatives in a tautomerizable keto-imine form was synthesized and tested for their in vitro cytotoxic activity against human cancer cells (HeLa, MDA-MB-361, MDA-MB-453, ...
Crystallographic and ab initio study of pyridine CH-O interactions: linearity of the interactions and influence of pyridine classical hydrogen bonds
(Royal Soc Chemistry, Cambridge, 2013)
The CH-O interactions of pyridine with water molecules were studied by analysing the data in the Cambridge Structural Database (CSD) and by ab initio calculations. The analysis of the CH-O interactions in the crystal ...
SEM/EDX and XRD characterization of silver nanocrystalline thin film prepared from organometallic solution precursor
(Technical Faculty, Bor-Serbia, Bor, 2013)
The Ag nano-structured thin films prepared on flat glass substrates have been studied. The ball-like silver nanoparticles have been synthesized in large quantity by using a modified method of hydrolytic decomposition of ...
Structure-Property Correlation Study of Novel Poly(urethane-ester-siloxane) Networks
(American Chemical Society (ACS), 2013)
Novel poly(urethane-ester-siloxane) networks, based on hydroxypropyl terminated poly(dimethylsiloxane) (PDMS), 4,4'-methylenediphenyl diisocyanate, and hyperbranched polyesters (HBPs) of the second and third pseudogenerations, ...
Ab Initio Quantum Study of Nonadiabatic S-1-S-2 Photodynamics of s-trans-Butadiene
(American Chemical Society (ACS), 2013)
The nonadiabatic photodynamics of s-trans-butadiene in its lowest singlet excited states is studied theoretically, using a fully quantal approach. The coupled 1B(u) and 2A(g) states are considered in the calculation, ...
A new insight into the mechanism of lead electrodeposition: Ohmic-diffusion control of the electrodeposition process
(Elsevier, 2013)
A new insight into the mechanism of lead electrodeposition from nitrate solutions is presented by analysis of the polarization characteristics and by scanning electron microscopic (SEM) analysis of the surface morphology ...
Correlation between structure, retention, property, and activity of biologically relevant 1,7-bis(aminoalkyl)diazachrysene derivatives
(Elsevier, 2013)
The physicochemical properties, retention parameters (R-M(0)), partition coefficients (log P-OW), and pK(a) values for a series of thirteen 1,7-bis(aminoalkyl) diazachrysene (1,7-DAAC) derivatives were determined in order ...
Antioxidant Evaluation of Heterocyclic Compounds by Cytokinesis-Block Micronucleus Assay
(Bentham Science Publ Ltd, Sharjah, 2013)
This article summarizes the results of using cytokinesis-block micronucleus (CBMN) assay to evaluate the antioxidant potential of heterocyclic compounds. Most studies were carried out with naturally occurring heterocyclic ...