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31 P MAS NMR investigation of some microporous zincophosphates
(Serbian Chemical Society, Belgrade, 1996)
High field magic-angle spinning (MAS) 31 P-NMR investigations of novel porous zincophosphates and their cobalt-containing derivatives confirm the framework structure of alternating Zn(Co)O 4 and PO 4 tetrahedra. The MAS ...
Some aspects of the quantitative analysis of cyclic nucleotides by fast-atom bombardment mass spectrometry
(Serbian Chemical Society, Belgrade, 1996)
The possibilities of the quantitative analysis of cyclic nucleotides by fast-atom bombardment are examined. Aspects such as the amount of matrix, the formation of protonatcd ion species and the presence of more than one ...
The flow of Newtonian and drag-reducing fluids around sphere
(Serbian Chemical Society, Belgrade, 1996)
The flow around a sphere placed coaxially in a cylindrical tube, the separation of the boundary layer and the wake shedding phenomena are investigated. The results of the simultaneous determination of the drag coefficients ...
Fluid dynamic studies of a three-phase fluidized bed
(Serbian Chemical Society, Belgrade, 1996)
Three phase flow and mixing in the liquid phase were studied for a draft tube fluidized bed (DTFB) operating in a circulating regime. The DTFB was considered as a system consisting of five interconnected compartiments: the ...
Determination of new ASOG-H parameters of CyCH, furfural and DMSO groups
(Serbian Chemical Society, Belgrade, 1996)
New interaction parameters for the groups CYCH(1)-furfural(2) and CyCH(1)-DMSO(2) of the ASOG-H model were determined, for 293.15 K-323.15 K and 303.15 K-323.15K respectively. The values of the CyCH(1)-furfural(2) parameters ...
Analysis of mass transfer in beer dialysis and diafiltration with two different membranes
(Serbian Chemical Society, Belgrade, 1996)
Experimental investigation of selective alcohol removal from beer by dialysis and dialysis with transmembrane pressure (diafiltration), using two different hollow-fiber membranes: Cuprophan (regenerated cellulose) and ...
Synthesis and formation mechanism of ultrafine spherical Al2O3 powders by ultrasonic spray pyrolysis
(Japan Inst Metals & Materials, Sendai, 1996)
Synthesis of high-purity submicrometer spherical particles of oc-alumina is performed by ultrasonic spray pyrolysis. As precursors, 0.5 M water solutions of both AlCl3 . 6H(2)O and Al(NO3)(3) . 9H(2)O have been used. The ...
An investigation of the synthesis of poly(L-lactide) as a biodegradable polymer for orthopaedic applications
(Serbian Chemical Society, Belgrade, 1996)
The investigation is based upon recent research in the area of the synthesis of biodegradable poly(L-lactide) (PLLA) for biomedical applications using stannous octoate (SnOct) as an initiator. The objective was to investigate ...
Nondispersive solvent extraction-stripping of phenol in a hollow fiber-in-fiber membrane contactor
(Serbian Chemical Society, Belgrade, 1996)
Phenol extraction from aqueous solution and its simultaneous concentration into caustic stripping solution using a hollow fiber-in-fiber type membrane contactor was investigated. The phenol separation rate using sunflower ...
Apparent energy of activation for hot working of vanadium microalloyed steel
(Serbian Chemical Society, Belgrade, 1996)
Two-stage linear In [sinh(ασca)] vs.1/T plots, based on isothermal continuous and anisothermal multipass torsion curves, indicate the double Q HW behaviour of a V-steel. Above T nr , Q HW is independent of all variables ...