Претраживање
Приказ резултата 11-20 од 153
Process improvement approach to the acid activation of smectite using factorial and orthogonal central composite design methods / Faktorijalni i ortogonalno centralno kompozitni plan eksperimenta kiselinske aktivacije smektita
(Serbian Chemical Society, 2008)
The purpose of this study was to determine the effective operating parameters and the optimum operating conditions of an acid activation process within the framework of improvement of the process. Full two-level factorial ...
Antioxidant properties of grape seed extract on human lymphocyte oxidative defence
(Georg Thieme Verlag Kg, Stuttgart, 2008)
The distribution of polyphenolic compounds in a grape (Vitis vinifera) seed extract (GSE) was determined using LC/ESI-TOF MS, HPLC/DAD, and C-13-NMR. The 17 identified compounds comprised gallic and protocatechuic acid, ...
Plasma assisted degradation of phenol solutions
(Vacuum, 2008)
Solutions of 2-chlorophenol, 4-chlorophenol and 2,6-dichlorophenol in bidistilled and water from the river Danube were treated in plasma reactor. In this reactor, based on coaxial dielectric barrier discharge at atmospheric ...
Fractal analysis of physical adsorption on surfaces of acid activated bentonites from Serbia
(Association of the Chemical Engineers of Serbia, 2008)
Solid surfaces are neither ideally regular, that is, morphological and energetically homogeneous, nor are they fully irregular or fractal. Instead, real solid surfaces exhibit a limited degree of organization quantified ...
Fabrication and characterization of AFM golden microcantilevers and measurement of small electromagnetic forces
(Institute of Electrical and Electronics Engineers Inc., 2008)
This paper presents results of research oriented towards developing a method for measurement of small electromagnetic forces using atomic force microscope (AFM). The method is based on the measurement of cantilever deflection ...
Novel 4-aminoquinolines active against chloroquine-resistant and sensitive P. falciparum strains that also inhibit botulinum serotype A
(American Chemical Society (ACS), 2008)
We report on the initial result of the coupling of 4-amino-7- chloroquinoline with steroidal and adamantane constituents to provide small molecules with excellent in vitro antimalarial activities (IC90 (W2) down to 6.74 ...
New chimeric antimalarials with 4-aminoquinoline moiety linked to a tetraoxane skeleton
(American Chemical Society (ACS), 2008)
The synthesis of the chimeric molecules consisting of two pharmacophores, tetraoxane and 7-chloro-4-aminoquinoline, is reported. The tetraoxanes 2, 4, and 8 show relatively potent in vitro antimalarial activities, with ...
Investigation of interface and surface energy states in semiconductors by PA method
(European Physical Journal: Special Topics, 2008)
The photoacoustic (PA) signal should generally change with the extent of damage, in the form of surface energy states (SES) or interface energy states (IES). For a mechanically, chemically or particles processed (Ar-plasma ...
The contributions of high- and low altitude emission sources to the near ground concentrations of air pollutants
(Elsevier Science Inc, New York, 2008)
The scale of transport through the atmosphere depends on the effective height of an emission source, the meteorological conditions and the physico-chemical characteristics of the pollutants. Atmospheric surface temperature ...
The mutual relation of decisive characteristics of electrolytic copper powder and effect of deposition conditions on them
(Nova Science Publishers, Inc., 2008)
The papers dealing with the effects of electrodeposition conditions on the decisive characteristics of electrolytic copper powder and their mutual relations are reviewed, and a semiquantitative theory based on them is ...