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Now showing items 1171-1180 of 1180
Primena uprošćenih termodinamičkih metoda određivanja vremena hlađenja na primeru tehnologije pripreme jogurta dvofaznim hlađenjem / Simplified thermodynamic methods for calculation of processing time during food refrigeration applied on two-phase yogurt manufacturing technology
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2007)
Dobra procena vremena hlađenja i zamrzavanja može obezbediti efikasniji i ekonomičniji rad rashladne instalacije za postavljene tehnološke zahteve. U ovom radu predstavljene su neke od najčešće primenjivanih metoda za ...
Electrohydraulic thrust vector control of twin rocket engines with position feedback via angular transducers
(Pergamon-Elsevier Science Ltd, Oxford, 2007)
The thrust vector control (TVC) of rocket engines is used when the aerodynamic surfaces are inadequate to control vehicles or when a greater agility may be required of a missile. Traditionally, in all spacecraft to date ...
Correlation of microstructures and tribological properties of ferrous coatings deposited by atmospheric plasma spraying on Al-Si cast alloy substrate
(Springer, New York, 2009)
The microstructure and tribological properties of ferrous coatings applicable to cylinder bores were investigated in this study. Two kinds of ferrous powders were sprayed on Al-Si cast alloy (EN AlSi10Mg) substrate by ...
Pouzdanost i raspoloživost beogradskog tramvajskog saobraćaja / Reliability and availability of Belgrade tram rolling stock
(Visoka tehnička škola strukovnih studija, Beograd, 2007)
Tramvajski saobraćaj ima važno mesto u sistemu javnog gradskog prevoza u Beogradu. Međutim, zbog veoma nepovoljne starosne strukture, lošeg stanja tramvajskih pruga i infrastrukture, kao i sistema održavanja koji zahteva ...
Evaluation of damage of steam pipeline steel using local approach to fracture
(American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 2008)
In the paper, the level of damage of steam pipeline steel after about 100,000 hours at 540°C (1004 °F) under pressure of 42 bars (609 PSI) is analyzed. Material degradation is estimated using a combined experimental and ...
Matematički model primarne zone komore sagorevanja turbomlaznog motora / Mathematical model of turbojet engine combustion chamber primary zone
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2007)
Razvijen je i eksperimentalno potvrđen matematički model primarne zone komore sagorevanja turbomlaznog motora. Komora sagorevanja je prstenasta sa prstenastim jediničnim isparivačem postavljenim centralno u primarnu zonu. ...
Size-Structure Relationship in Manufacturing Enterprises in Transition
(Croation Union of Mech. Engineers and Naval Architects, 2008)
The paper describes research on a size-structure relationship in manufacturing enterprises. The research was carried out in 30 manufacturing firms, mainly from the metalworking industry (seven oil and oil derivative ...
Effect of thixocasting and heat treatment on the tribological properties of hypoeutectic Al-Si alloy
(Elsevier Science Sa, Lausanne, 2008)
This paper presents results of structural, mechanical and tribological tests of thixocast hypoeutectic Al-Si alloy A356 (EN AlSi7Mg0.3). The pin-on-disc tribometer was used to carry out tribological tests under dry sliding ...
Uticaj frekvencije vibratora traktorskog tresača voća na oscilovanje i otkidanje plodova / The influence of a tractor fruit shaker's vibrator frequency on the oscillation and separation of fruit summary
(Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad, 2009)
Mehanizovano ubiranje plodova koštičavog voća omogućava racionalniji i ekonomski opravdaniji način branja, u odnosu na ručni, koji u okviru proizvodnje voća predstavlja jedan od složenijih zadataka. Udeo radne snage pri ...
Data and modeling of negative ion transport in gases of interest for production of integrated circuits and nanotechnologies
(Elsevier, Amsterdam, 2007)
We review techniques to prepare, evaluate and apply sets of cross section and transport data for negative ions that are required for the modeling of collisional non-equilibrium plasmas used for processing of microelectronic ...