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Приказ резултата 2271-2280 од 2293
Ballistic transport through graphene nanostructures of velocity and potential barriers
(Iop Publishing Ltd, Bristol, 2011)
We investigate the electronic properties of graphene nanostructures when the Fermi velocity and the electrostatic potential vary in space. First, we consider the transmission T and conductance G through single and double ...
Synthesis, characterization and in vitro cytotoxicity studies of platinum(IV) complexes with thiouracil ligands
(Elsevier, 2010)
Reactions of [PtMe3(bpy)(Me2CO)][BF4] (2) with the thionucleobases 2-thiouracil (s2Ura), 4-thiouracil (s 4Ura) and 2,4-dithiouracil (s2s4Ura) resulted in the formation of complexes of the type [PtMe3 (bPy)(L-κS)] [BF4] (L= ...
Cancer-Suppressive Potential of Extracts of Endemic Plant Helichrysum zivojinii: Effects on Cell Migration, Invasion and Angiogenesis
(Natural Products Inc, Westerville, 2013)
Helichrysum zivojinii Cernjavski & Soska is an endemic plant species that grows in the National Park Galicica in Macedonia. Five extracts were isolated as fractions from the aerial parts of the plant: a n-hexane extract ...
Relationships between structure and activity of carbon as a multifunctional support for electrocatalysts
(Royal Soc Chemistry, Cambridge, 2012)
We report on new insights into the relationships between structure and activity of glassy carbon (GC), as a model material for electrocatalyst support, during its anodization in acid solution. Our investigation strongly ...
Computational analysis of tris(1,2-ethanediamine) cobalt(III) complex ion: calculation of the Co-59 shielding tensor using LF-DFT
(Springer Wien, Wien, 2011)
The ligand-field density functional theory (LF-DFT) approach is employed for calculations of the Co-59 nuclear magnetic resonance (NMR) shielding tensor of all four diastereoisomers (lambda lambda lambda, lambda lambda I ...
Supercritical extraction of essential oil from Mentha and mathematical modelling- the influence of plant particle size
(Elsevier, 2012)
Supercritical CO2 extraction was studied using dried leaves of Mentha, originated from the northern part of Libya. Leaves were milled and sieved to obtain different average particles (dp = 0.25-0.80 mm). They were treated ...
Composition and Antimicrobial Activity of Seseli globiferum Essential Oil
(Natural Products Inc, Westerville, 2011)
The essential oil from aerial parts of Seseli globiferum Vis. obtained by hydrodistillation with Clevenger-type apparatus was analyzed by GC-MS. Twenty-eight compounds were identified, representing 99.4% of the total oil. ...
Magnesium underpotential deposition from nitrate melts and alloy formation with platinum substrate
(Redakcia Kovove Materialy, Bratislava 38, 2016)
This paper investigates magnesium underpotential deposition on platinum electrodes from magnesium nitrate-ammonium nitrate melts at temperatures ranging from 400 to 500 K. Electrochemical techniques used were linear sweep ...
Thermal and optical properties of silver-poly(methylmethacrylate) nanocomposites prepared by in-situ radical polymerization
(Elsevier, 2010)
Surface modified silver nanoparticles dispersed in chloroform were encapsulated in poly(methylmethacrylate) (PMMA) by in-situ radical polymerization of methyl methacrylate initiated by 2,2′-azobisisobutyronitrile. The ...
Protective Effect on Human Lymphocytes of Some Flavonoids Isolated from Two Achillea Species
(Natural Products Inc, Westerville, 2010)
This study was conducted to elucidate the in vitro protective effect of five flavonoids [apigenin (1), apigenin-7-O-glucoside (2), centaureidin (3), jaceidin (4) and quercetin (5)] against chromosomal damage in mitogen-induced ...