There are three parameters that influences hydrolyses on milk and fermented milk products. Active acidity (pH) is one of that factors that determines speed of reaction and can influence on specific enzyme substrate. In production of yogurt, hydrolyses is measured by amount of peptides on different pH value. Maximum pH is determined to obtain maximu...

By J. Tomovska, N. Gruevska, N. Tomovska

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

Consumption of red mul, of huge ballast in alumina production is nightmare for scienists who are working in the area of industrial metallurgi, one dey will become reality. Among other things of cement industry is going to help regrading assortment of products and diversity of raw material base. In this document, theoretical bases of the mentioned a...

By J. Mikić, M. Sudar

Investigation of the composition of elements in drinking water, from water network of Belgrade city, with indirect method. This method is based on the scale that is made with precipitation from the water during heating, indicated presence of alkali and alkaline earth elements to a greater extent and heavy metals which is quite expected. Somewhat un...

By M. B. Rajković, Z. Tomić, M. D. Stojanović, A. Đorđević, M. M. Sudar

In this paper the aim was to create a basic model for total quality management in the organization of the textile production, with an emphasis on Statistical Process Control (SPC) in the design and development process that will completely satisfy the requirements, the needs and the desires of the buyers and all the participants in the business rela...

By B. Gjorgjevska, S. Kjortosheva, V. Chepujnoska

This paper presents results of theoretical research in changed optical properties due to the presence of boundaries and changes of boundary parameters in nanofilm-molecular crystals. The energy spectrum of excitons and their spatial distribution along the axis limits (in layers) were found through analytical and numerical calculations. The relative...

By S. Pelemiš, S. Armaković, J. P. Šetrajčić

The purpose of the research was to make evaluation of the ballistic strength of four different fiber/resin composites intended to be used in manufacturing of ballistic items for personal protection. Research has been performed on glass, ballistic nylon, aramid and HPPE (High Performance Polyethylene) plain woven fabrics based composites. As a matri...

By D. Dimeski, D. Spaseska, V. Srebrenkoska

Supercritical fluid extraction (SFE) is an efficient extraction technique for the separation of various organic compounds from herbs, or more generally, from plant materials. As cultivate plant (plant from plantation) Helichrysum italicum from municipality Novi Grad was used in this research. The influence of pressure on total extract yield at flow...

By V. Mićić, M. Jotanović, Ž. Lepojević, V. Aleksić, B. Pejović

The samples of rolled copper were mechanically and electrochemically polished in suitable electrolytes for electrochemical polishing. These substrate surfaces that had been prepared in advance, served as the basis for depositing of copper layers from two baths, namely, from the basic electrolyte(OR) with the following composition: 240 g/dm3 Cu...

By M. V. Tomić, M. G. Pavlović, Lj. J. Pavlović, N. D. Nikolić

Calcium hydroxyapatite (CHA) has been synthesized biomimetically using simulated body fluid (SBF) alone and in combination with Fetal Calf Serum (FCS) and Eagle’s Minimum Essential Medium (EMEM). Chemical composition of the used SBF is like composition of human plasma, with small differencies in some ions concentrations, and pH value was adju...

By V. Jokanović, B. Čolović