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Prikaz rezultata 1521-1530 od 1558
Characterization of nano-powder morphology obtained by ultrasonic spray pyrolysis
(Savez inženjera metalurgije Srbije, Beograd, 2008)
Spherical nanosized particles of copper were synthesized by ultrasonic dispersion of solutions from copper sulphate in the temperature range of 800-900°C in hydrogen atmosphere. A controlled particle size was realized ...
The influence of residual stresses on welded joints and other inhomogeneous materials with cracks / Uticaj zaostalih napona na ponašanje zavarenih spojeva i drugih nehomogenih materijala sa prslinama
(DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd, 2009)
Residual stresses in many structural components are often produced during the fabrication or bonding processes, due to the cooling from elevated temperatures. Examples for such behavior are: welded and soldered joints, ...
Development of a packed bed bioreactor for cartilage tissue engineering / Razvoj bioreaktorskog sistema sa pakovanim slojem za primenu u inženjerstvu tkiva hrskavice
(University of Belgrade - Faculty of Mechanical Engineering, Belgrade, 2006)
Efficient transport of regulatory molecules is one of the main requirements for directing the growth and differentiation of bone marrow stromal cells (BMSC). We have designed and utilized a packed bed bioreactor system for ...
Determination of AL2O3particle size in Cu-AL2O3 nanocomposite materials using UV spectrophotometry / Određivanje veličine čestica AL2O3 u nanokompozitnim materijalima iz sistema Cu-AL2O3 primenom UV spektrofotometrije
(Savez inženjera metalurgije Srbije, Beograd, 2008)
In order to achieve improved mechanical properties of dispersion strengthened nanocomposite, without influencing electrical and thermal conductivity it is necessary for dispersoide to be nano sized and uniformly distributed ...
Influence of the woven construction on breaking load and relaxation / Uticaj Konstrukcije Tkanine na Prekidnu Silu i Relaksaciju
(Union of Textile Engineers and Technicians of Serbia, Belgrade, 2001)
A study is made to establish the correlation between a woven construction and its mechanical strength. Dynamometric tests are carried out to determine the breaking load and breaking extension of three wooltype fabrics, as ...
Effect of silane coupling agents on mechanical properties of Nano-SiO2 filled high-density polyethylene composites
(Zurich : Trans Tech Publications, 2007)
Composites with nano-SiO2 particles and high density polyethylene (HDPE) matrix were produced by hot pressing with various particle contents and particle surface treatment using commercially available silane coupling agents: ...
Electrocatalysis by nanoparticles - Oxygen reduction on Ebonex/Pt electrode
(Elsevier, 2006)
The oxygen reduction reaction was studied in 0.5 mol dm-3 HClO4 solution on an electrode based on Ebonex-supported platinum electrocatalyst applied on rotation Au disk electrode (Au/Ebonex/Pt). Pt catalyst was prepared by ...
Adsorption and corrosion inhibitive properties of some organic molecules on iron electrode in sulfuric acid
(Elsevier, 2002)
Adsorption and corrosion inhibitive properties of three different organic molecules: 2-naphthalenesulfonic acid, 2,7-naphthalenedisulfonic acid and 2-naphthol-3,6-disulfonic acid are investigated on Armco-iron electrode ...
Stress field analysis in composite laminates with embedded optical fiber
(Trans Tech Publications Ltd, Durnten-Zurich, 2000)
A typical intensity-modulated optical fiber sensor system consists of a light source, a sensing device, within which the intensity of light is altered by the measurand in some way, a detector to measure the intensity of ...
Analysis of crack initiation by micromechanism of ductile fracture in structural steel / Analiza nastanka prsline mikromehanizmom žilavog loma u konstrukcionom čeliku
(Vojnotehnički institut, Beograd, 2001)
In the presented paper a micromechanical model based on a particular flow criterion of a porous solid has been applied. In this study crack initiation in the smooth specimen made of steel 22 NiMoCr 3 7 has been analyzed; ...