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Now showing items 31-40 of 98
A study of the photocatalytic degradation of methomyl by UV light
(Association of the Chemical Engineers of Serbia, 2009)
The photocatalytic degradation of insecticide methomyl in water, using TiO2 and ZnO (Merck), under UV (366 nm) was studied. The influence of the catalyst concentration and pH was investigated. The optimal concentration of ...
(NH4)2SO4 corrosion of cement in concrete analyzed by an improved mathematical model / (NH4)2SO4 korozija cementa u betonu analizirana poboljšanim matematičkim modelom
(Serbian Chemical Society, Belgrade, 2009)
This paper gives a critical analysis of the equation that predicts and estimates the progress of degradation for various building materials, recently proposed by Matsufuji et al.1 After the analysis, the paper suggests an ...
Effects of solvent and structure on the reactivity of 6-substituted nicotinic acids with diazodiphenylmethane in aprotic solvents / Uticaj rastvarača i strukture na reaktivnost 6-supstituisanih nikotinskih kiselina sa diazodifenilmetanom u aprotičnim rastvaračima
(Serbian Chemical Society, Belgrade, 2009)
The rate constants for the reactions of diazodiphenylmethane (DDM) with 6-substituted nicotinic acids in aprotic solvents at 30°C were determined. The obtained second order rate constants in aprotic solvents, together with ...
Diffusion of lidocaine hydrochloride from lipid microparticles
(Association of the Chemical Engineers of Serbia, 2009)
Lipid particles, as drug carriers, are of increasing research interest, because a sustained drug release and avoidance of side effects could be achieved by using them. Lidocaine hydrochloride is a very efficient local ...
ESI-MS spectra of 3-cyano-4-(substituted phenyl)-6-phenyl-2(1H)-pyridinones / ESI-MS spektri 3-cijano-4-(supstituisani fenil)-6-fenil-2(1H)-piridinona
(Serbian Chemical Society, Belgrade, 2009)
Twelve 3-cyano-4-(substituted phenyl)-6-phenyl-2(1H)-pyridinones were investigated by tandem mass spectrometry using positive as well as negative electrospray ionization. The influence of the electron affinity of the ...
Frequency response analysis as a tool for fast evaluation of periodic operations. Case study: A heterogeneous catalytic reacator
(2nd European Process Intensification Conference (EPIC 2009), Venice, Italy, 2009)
One way to achieve process intensification is to operate the process in a periodic way, in order to obtain better average performance compared to the optimal steady-state operation. The source of the possible improvement ...
Setup of combined creep crack growth model / Postavke kombinovanog modela razvoja prsline u uslovima puzanja
(DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd, 2009)
The paper sets up the combined criteria for creep crack growth (CCG) assessment. The CCG model considering influence of creep damage on mechanics of fracture correlates the crack growth rate, damage factor and damage factor ...
Rezidualna količina pesticida kao parametar tehnološkog kvaliteta sirovina biljnog porekla
(Poslovna politika AD, Beograd, 2009)
Pesticidi se upotrebljavaju širom sveta za zaštitu uroda tokom uzgoja i skladištenja. Poznato je da upotreba pesticida povećava prinose, ali u prekomernim količinama može da naruši kvalitet i zdravstvenu ispranost namrnica. ...
Lipases and proteases produced by indigenous Pseudomonas aeruginosa strain as potential detergent additives / Lipaze i proteaze dobijene iz ekstremofilne Pseudomonas aeruginosa vrste kao aditivi u formulacijama deterdženata
(Association of Chemical Engineers of Serbia, 2009)
Enzymes produced by indigenous Pseudomonas aeruginosa strain have been subjected to research considering their potential application as detergent additives. As previously noted, lipase produced by Pseudomonas aeruginosa ...
A mass transfer heterogeneous in systems by the adsorption method
(Association of the Chemical Engineers of Serbia, 2009)
A mass transfer coefficient between: A liquid and single sphere and a liquid And a column wall in packed and fluidized beds of a spherical inert Particle have been studied experimentally using the adsorption method. The ...