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Synthesis of BaTiO3 from a mechanically activated BaCO3-TiO2 system
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2008)
U ovome radu je analiziran uticaj mehaničke aktivacije sistema BaCO3- TiO2 na formiranje BaTiO3. Ekvimolarne smeše praha BaCO3 i TiO2 su aktivirane u planetarnom mlinu u kontinualnom režimu tokom 0, 30 i 90 min. Uzorci su ...
A trigonometric orthogonality with respect to a nonnegative Borel measure
(Univerzitet u Nišu - Prirodno-matematički fakultet - Departmant za matematiku i informatiku, Niš, 2012)
In this paper we consider trigonometric polynomials of semi-integer degree orthogonal with respect to a linear functional, defined by a nonnegative Borel measure. By using a suitable vector form we consider the corresponding ...
Comparison of methodologies for identification of process parameters affecting geometric deviations in plastic injection molding of housing using Taguchi method
(Kaunas Univ Technol, Kaunas, 2012)
This paper examines parameters that could influence geometric part deviation (shrinkage and warpage) of the Housing (Cycoloy, PC/ABS, Grade C2800) produced by plastic injection molding. Five parameters (temperature of ...
Experimental and Simulation Testing of Flight Spin Stability for Small Caliber Cannon Projectile
(Assoc Mechanical Engineers Technicians Slovenia, Ljubljana, 2012)
The basic aim of this paper is to consider correlations of stability flight criteria, derived as the relations of aerodynamic coefficients and derivatives, on the model of a small caliber cannon spin stabilized projectile. ...
A Model for Shaped Charge Warhead Design
(Assoc Mechanical Engineers Technicians Slovenia, Ljubljana, 2012)
A model for shaped charge warhead design was developed. The model is incorporated in the computer code - CUMUL. The code includes detonation wave profile estimation, liner collapse, arrival of collapsed liner to the ...
The effects of dynamic load on behaviour of welded joint a-387 gr. 11 alloyed steel
(Croatian Metallurgical Society, 2013)
The in-service behaviour of alloyed steel A-387 Gr. 11 Class 1, for pressure vessels, used for high temperature applications, depends on the properties of its welded joint, with parent metal (BM), heat-affected-zone (HAZ) ...
On a fixed point theorem of Kirk
(Academic Press Inc Elsevier Science, San Diego, 2005)
W.A. Kirk [J. Math. Anal. Appl. 277 (2003) 645-650] first introduced the notion of asymptotic contractions and proved the fixed point theorem for this class of mappings. In this note we present a new short and simple proof ...
Possibilities to identify engine combustion model parameters by analysis of the instantaneous crankshaft angular speed
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2014)
In this paper, novel method for obtaining information about combustion process in individual cylinders of a multi-cylinder spark ignition engine based on instantaneous crankshaft angular velocity is presented. The method ...
Effect of microstructure on tensile properties of austenite-ferrite welded joint
(Faculty of Metallurgy, 2015)
Complex microstructure of austenite-ferrite welded joint has been investigated, focused on its influence on Focal tensile properties. Tensile properties (yield strength and hardening coefficient) have been evaluated by ...
Numerical simulation of non-conventional liquid fuels feeding in a bubbling fluidized bed combustor
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2013)
The paper deals with the development of mathematical models for detailed simulation of lateral jet penetration into the fluidized bed, primarily from the aspect of feeding of gaseous and liquid fuels into fluidized bed ...