Based on relations for the maximum work at the closed thermodynamic system, the paper presents implementation of a general model for determining the minimum storage volume for compressed air. Due to the mechanical and thermodynamic imbalance of observed model, there are the conditions for obtaining the maximum work. Derived relations, which represe...

By Mitar Perušić, Branko Pejović, Radislav Filipović, Milenko Smiljanić, Mirko Radić

Encapsulation strategy has emerged as a mean to protect sensitive bioactive compounds, toimprove their stability and to deliver their active forms to the targeted place. A number ofbioactives can be encapsulated – cells, enzymes, vitamins, minerals, aromas and flavours, foodcolourants, antioxidants, etc. Over the years various encapsulation t...

By K. Trifkovic, G. Tadić, B. Bugarski

In this study the 3D surface model was successfully applied in investigating the influence of theprocess parameters on the physical and mechanical properties of the glass-ceramics. Glassceramicswas produced from coal fly ash and waste glass through the sintering method. The rawmaterial was taken from “REK Bitola”, a thermal power plant ...

By Biljana Angjusheva, Emilija Fidancevski, Kiril Lisichkov, Vojo Jovanov

New challenges faced by the company at the beginning of the 21st century require new approaches to quality management. Customer perception of the products and service quality is considered one of the key determinants of business performance and for the survival of the organization in a competitive market, and therefore the necessity of continuous m...

By Sonja Ćortoševa, Emilija Gavranska-Nečev

Our recent study on consolidation of marble samples with the purpose of culture heritageprotection occurred by periodical calcium oxalate precipitation on top of quasi parallelepipedicsamples. The overall process consisting of three stages of treatment, starting with 5 % calciumacetate solution for 60 minutes at 20°C, a draining step at 70°...

By Rihana Terzu, Edlira Baraj, Shun Yu, Christiane Förester, Holger Kropf, Kledi Xhaxhiu, Marsilda Come

The fruit of plane trees is used to obtain the powdered activated carbon. As the activating agent is used in the preparation of concentrated phosphoric acid. Completed the equilibrium adsorption of cationic methylene blue dye in the synthesized material. These results were fitted with three adsorption equilibrium model. The experimental results wer...

By Vladimir Dodevski, Branka Kaluđerović, Sanja Krstić, Đuro Čokeša, Danijela Brković

Use of water for recreation or treatment of very it’s very important to maintain health and working capacity of the population. A significant number of people temporarily or permanently, used pools for that purpose. That is why today, in the developed countries, great attention is paid to the quality of water for recreation. The aim of this w...

By Bogoljub Antonić, Miladin Gligorić, Aleksandar Došić, Dragan Vujadinović, Ranko Grujić, Danijela Babić

A reliable operation of the equipment is primarily important for each installation. One of the measures of safe operation steam-boiler systems is purity pipes. Very acceptable method of determining the soiling pipe is a method of staining.In this paper is described the determination of soiling boiler tubes in power plant Ugljevik after a decade of ...

By Bosiljka Stojanović

The process of galvanic-chemical protection according to the qualitative and quantitative characteristics, is one of the most complex wastewater pollutants. Also, from the surfaces of industrial solutions, as well as the protected parts of the stages of care, there are significant fumes, which pollute the surrounding air, which is to be treated pri...

By Božidarka Arsenović, Boško Ivanović

Material and energy flow management is among the most important factors for the economicgrowth of a society in harmony with nature and it will play the main role only in the area ofsustainable development. The three lifelong learning courses were developed in order to introducethis concept to the industry professionals and administration at the cit...

By Zoltan Zavargo, Aleksandar Jokić, Jelena Pavličević, Bojana Ikonić, Oskar Bera