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Приказ резултата 21-30 од 145
Optimizacija karakteristične temperature kod kondenzatora s obzirom na tehnoekonomske aspekat / Optimization of characteristic temperature of the condenser considering techno-economic aspect
(VII Međunarodni naučni skup „Savremeni materijali“, Banja Luka, 2014)
U radu je za kondenzatore kao karakteristične grupe rekuperatora toplote, polazeći od funkcije ukupnih troškova kao funkcije cilja, određena optimalna vrednost izlazne temperature rashladnog fluida. Pri ovome izvršena je ...
Novi model za određivanje promene entropije poluidealnog gasa primenom razlomljene temperaturne funkcije / New model for determining of change entropy of semi-ideal gas by using fractional temperature function
(Academy of Sciences and Arts of the Republic of Srpska, 2014)
Kod poluidealnog gasa, promena entropije ne može se odrediti preko srednjeg specifičnog toplotnog kapaciteta na način kao što se određuje promena unutrašnje energije i entalpije, odnosno razmenjena količina toplote. Uzimajući ...
Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers
(Belgrade : Military Technical Institute, 2014)
In this paper we proposed microfabrication scheme for PDMS (Polydimethylsiloxane) thin membrane fabrication on Si micromachined cavities with square cross section. PDMS network samples for this research were synthesized ...
Simultaneous bioremediation and soilification-new technology for recovery ash dump of thermoelectric power plants
(Belgrade : Association for the Development and use soill and landfills, 2014)
Solification of degraded areas of anthropogenic areas is of high importance to the environment since the process can reduce the negative influence of industrial activities on the environment. Combination of "silica bacteria" ...
Potential environmental application of microbial polysaccharides
(Abstracts CD - 23rd Symposium on Environmental Chemistry, Kyoto, Japan, 2014)
Here we report toxicity inhibition effect of microbial exopolysaccharides on copper (II) in acute toxicity tests with Artemia salina and Daphnia magna.
Agriotypus armatus Curtis, 1832, a parasitoid of Silo pallipes Fabricius, 1781: the first record for the Balkan Peninsula
(France : EDP Sciences, 2014)
Among the diverse order of Hymenoptera, aquatic species are of special interest. During macrozoobenthos sampling in the rivers of Serbia in 2003 and during the period 2011−2012, pupae of Silo pallipes Fabricius, 1781 were ...
Kinetics of heterogeneous methanolysis of sunflower oil with CaO·ZnO catalyst: Influence of different hydrodynamic conditions / Kinetika heterogene metanolize suncokretovog ulja sa CaO·ZnO kao katalizatorom - uticaj različitih hidrodinamičkih uslova
(Belgrade : Association of the Chemical Engineers of Serbia, 2014)
The kinetics of heterogeneous methanolysis of sunflower oil was studied at 60 °C using mechanochemically synthesized CaO·ZnO as catalyst. The influence of agitation speed, catalyst amount, and methanol-to-oil molar ratio ...
Sorption of different phenol derivatives on a functionalized macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite
(Serbian Chemical Society, 2014)
Macroporous nanocomposite of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite was prepared by radical suspension copolymerization. Nanocomposite was functionalized with diethylenetriamine ...
Effect of the orientation of the initially formed grains on the final morphology of electrodeposited lead
(Serbian Chemical Society, 2014)
The processes of Pb electrodeposition under diffusion control were examined by scanning electron microscopy (SEM) of the formed crystals. The orientation of grains of hexagonal shape formed in the initial stage of ...
Technological investigations of sulphide oxidation from flotation tailings in order to increase the degree of copper leaching
(Institut za rudarstvo i metalurgiju Bor, 2014)
The off-balance resources present the environmental problem and potential resource for copper extraction. This paper presents the results obtained using different reagents for the process of sulphide form oxidation of ...