While relying on all their senses, mental abilities and driven by curiosity, preschool children are constantly exploring and discovering the world around them. The stimuli from the environment to which they react and how they perceive them impact children's thinking and personality development. A child's cognitive potential is exceptional, so...

By Nebojša Budimirović

All aliphatic starting reactants were used to prepare two series of polycarbonate-based polyurethane (PC-PU) composite films: 1) with a low amount of titanium dioxide nanoparticles (0.5, 1.0 and 2.0 wt%) by one-step technique and 2) PC-PU hybrid materials by addition of submicron amorphous SiO2 Sidistar T120 particles (0, 1, 2, 5 and 10 wt%) using ...

By Jelena Pavličević, Milena Špírková, Ayse Aroguz, Dejan Kojić, Katalin Mészáros Szécsényi, Jaroslava Budinski-Simendić

 The heat transfer operation is extremely important in various technologies, especially in the rubber industry for crosslinking and for all the steps in the process of obtaining products from elastomeric materials. The speed at which the heat can be transferred to the rubber compound or taken away from it affects the design of the process equi...

By Vladan Mićić, Jaroslava Budinski-Simendić, Branko Pejović, Jelena Pavličević, Mitar Perušić, Ljiljana Tanasić, Duško Kostić

 In this work were synthesized hybrid materials based on aliphatic polyurethanes and small amounts of titanium dioxide nanoparticles (0.5; 2.0 and 3.0 wt.%). From an environmental point of view, this synthesized hybrid materials are significant engineering materials because the products of their thermal degradation are significantly less toxic...

By Jelena Pavličević, Dejan Kojić, Milena Špírková, Mirjana Jovičić, Bojana Ikonić, Vladan Mićić, Jaroslava Budinski-Simendić

This paper presents the experimental methodology to carry out functional performance tests for an air filter with a particular design of its housing, generically named Super absorbing YXV "Air by Corneliu", patented and homologated by the Romanian Automotive Registry, to which numerous prizes and medals were awarded at national and international in...

By C Birtok-Băneasă, S A Raţiu, V Alexa, A L Crăciun, A Josan, A Budiul-Berghian

In northern Romania, there are numerous tailing ponds, resulting from mining activities that present significant environmental risks. Some of them, including Vrănicioara tailing pond, were the subject of technical projects for ecological rehabilitation. Vrănicioara pond is located on the right side of Cavnic Valley, downstream Cavnic town, about 4 ...

By I Bud, S Duma, D Gusat, I Pasca, A Bud