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Приказ резултата 21-30 од 154
An increase of hydro-aggregate's installed power and efficiency factor before the revitalization phase
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2006)
The revitalization of hydro-aggregates should be performed before the life-time expiry of most their parts. But, as in our practice aggregates have been under exploitation much longer then theoretical life-time advices ...
Temperatures of coal particle during devolatilization in fluidized bed combustion reactor
(Taylor & Francis Inc, Philadelphia, 2006)
The purpose of this study was to investigate the thermal behavior of coal during devolatilization in fluidized bed. Temperatures in the center of single coal particle were measured by thermocouple. Two coals were tested ( ...
Klasifikacija podataka dobijenih luminescencijom raka dojke pomoću samo-organizujuće neuronske mreže / Classification of breast cancer luminescence data using self-organizing mapping neural network
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2006)
Primenjena je samoorganizujuća neuronska mreža pri analizi podataka luminescencije raka dojke. Ulazni podaci su trodimenzionalni vektori koji predstavljaju normalno i maligno humano tkivo. Analizirana je mogućnost klasifikacije ...
Fluid boundaries shaping using the method of kinetic balance
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2006)
Fluid flow in curved channels with various cross-sections, as a common problem in theoretical and applied fluid mechanics, is a very complex and quite undiscovered phenomenon. Defining the optimum shape of the fluid flow ...
Uticaj radnih elemenata i koncepcija mašina na racionalnu obradu zemljišta / Influence of working elements and machine concepts on rational soil cultivation
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2006)
U radu su analizirani radni elementi koji čine sistem u okviru klasičnih mašina za obradu zemljišta i mašina za obavljanje nekoliko operacija u jednom prohodu. Prvenstveno su prikazani radni elementi, pasivni i aktivni i ...
Uticaj ekvivalentnog sadržaja kiseonika u mešavini gasova na strukturu i žilavost metala šava mikrolegiranih čelika / The influence of the oxygen equivalent in a gas-mixture on the structure and toughness of microalloyed steel weldments
(Srpsko hemijsko društvo, Beograd, 2006)
Ispitivanja su izvedena na dva čelika. Prvi je mikrolegiran sa Nb, a drugi sa: Ti, Nb i V. Žilavost metala šava navedenih čelika je određena na instrumentiranom Šarpijevom klatnu. Pet različitih mešavina gasova (Ar, CO2, ...
Analiza tehno-ekonomske opravdanosti uvođenja frekventnih regulatora na pogonima dozatora i dodavača uglja mlinova kotla u TENT / The economic beneficial upgrading of batcher on coal conveyer in fossil fuel power plant
(Savez inženjera i tehničara Srbije, Beograd, 2006)
Polazna pretpostavka istraživanja u ovom radu je da se isplativa poboljšanja mogu postići na postojećim pogonima dozatora i dodavača uglja u termoelektrani "Nikola Tesla" u Obrenovcu. Inovacija je zamena mehaničkog varijatora ...
Simulations of the kettle reboiler shell side thermal-hydraulics with different two-phase flow models
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2006)
A computational fluid dynamics approach is presented for the simulation and analyses of the kettle reboiler shell side thermal-hydraulics with two different models of two-phase flow – the mixture and two fluid model. The ...
Primena metode holografske interferometrije u ispitivanju modela izrađenog od Al-Zn-Mg-Cu legure / Application of holographic interferometry technique for investigation of the model designed of Al-Zn-Mg-Cu alloy
(Savez inženjera metalurgije Srbije, Beograd, 2006)
U ovom radu ispitivani model komore za rad u uslovima visokih pritisaka izrađen je od višekomponentne legure aluminijuma tipa Al-Zn-Mg-Cu, koja pripada legurama visoke čvrstoće, postignute mogućnošću rastvaranja legirajućih ...
An experimental study of temperature of burning coal particle in fluidized bed
(Amer Chemical Soc, Washington, 2006)
The purpose of this study was to investigate the temperature of coal particle during combustion in fluidized bed (FB). It is necessary to know the coal particle temperature in order to predict kinetics of chemical reactions ...