Reaction between a warm water mixture of pyridoxal hydrochloride (PL.HCl), and Smethyilisothiosemicarbazidehydroiodide (SMeTSC.HI) in the presence of Na2CO3 .10 H O, we got pyridoxal S-methylisothiosemicarbazone (PLITSC; H2L). Ligand with appropriate Cu salt is coordinated, to give next complex: dark-brown, penta coordinated, square-pyrami...

By S. Ivković, V. Jevtović

The influence of using formic, oxalic, citric and tartaric acid for adjusting the dyebath pH upon the dyeability of polyester knitwear dyed with Disperse Yellow 3 was investigated. CIELAB coordinates of the knitwear samples dyed with the addition of tested acids were assessed and compared to those dyed with the addition of acetic acid. The differen...

By M. N. Miljković, M. M. Purenović, M. M. Petrović

Heating of foods induces chemical reaction pathways that are not only leading to desired compounds (e.g. aroma and taste active) but also to degradation products that can pose a cancer risk. Especially the Maillard reaction is known for the formation of carcinogenic compounds in some instances. Recently, it was described that the uptake of oxid...

By M. Murkovic

In natural waters as a highly complex environment, a different matter, regardless of whether they are natural water ingredients or substances which mature in water by man activity, are subject to one or several different processes. Physical, chemical or biochemical processes are determining finding shapes, behavior and fate of substances in the aqu...

By B. Dalmacija

One of the most widely used high-energy nanocrystalline permanent magnetic materials are Nd-Fe-B alloys. Current R&D of Nd-Fe-B magnets is focused on three major topics: increase of magnetic energy, improvement of corrosion resistance and reduction of rare-earth content as a way of decreasing prices of final magnetic material with still signifi...

By N. Talijan

While proposed concepts to minimize, reuse and recycle wastes have generally, not solved the negative effects on environment, zero emissions concepts have arisen. The term Zero Emissions attracted special attention, as it is easily comprehensible and does not require translations. This concept is drawing mounting interest all around the world. In t...

By Z. Zavargo, A. Jokić

Strategijsko upravljanje ljudskim resursima postaje presudno za pronalaženje originalnih rješenja u proizvodnom sektoru. U ovome radu rasprava je usmjerena na planiranje ljudskih resursa u jednom metaloprerađivačkom preduzeću radi udovoljavanja sve većim tržišnim zahtjevima i poboljšanja konkuretskog položaja. Uključivanjem svi...

By M. Miljanovic, O. Spaic, M. Sokovic

In the introductory part we give definitions and relationships to determine the reliability and probability of failure of technical systems. After that, the analysis and calculation of reliability, we proposed method, based on the construction of tree failure in the form of logical structure. The second part was performed to verify the model set on...

By B. Pejović, D. Vujadinović, M. Perušić

The co-deposition of silver with less noble metals results at low current densities in pure silver coatings or solid solutions of these metals in silver. At high current densities, after saturation of the silver lattice with the alloying metal a new richer in this element phase is formed and heterogeneous coatings are obtained. The spontaneous depo...

By I. Krastev

Nowadays, due to using many rare metals in the most advanced technologies, the demand for these metals is increasing. Rare metals, however, mostly don’t show the property of creating their own mineral deposits, making their production more complicated. Some rare metals, e.g. gallium, germanium, indium and thallium usually accompany zinc ore. ...

By D. D. Stanojević, M. B. Rajković, D. V. Tošković, M. V. Tomić