The BAS EN ISO/IEC 17025 standard gives the laboratory the opportunity to accredit the statement of conformity. The statement of conformity is provided in accordance with the specification, standard or costumer requirement. Prior to issuing the statement of conformity, the accredited laboratory, in cooperation with the costumer, must document the d...

By Branka Muminovic, Omer Beganovic, Sinha Korlat-Mahmić, Alma Čelebić-Malkić

This paper examines all transport properties (such as e.g. mechanical resistance, electrical and thermal conductivity, photosensitivity, magnetization, etc.) which are caused by the electron motion in crystalline nanofilms, with two sublattices. We have performed theoretical research using the method of two-time and temperature-dependent Green's fu...

By Siniša Vučenović, Jovan Šetrajčić, Nikola Vojnović

In this paper, we studied the superlattice model, as a special class of materials in which the "nodes" of the crystal lattice are made up of interconnected thin films with a certain regular and periodic arrangement. We have theoretically determined the energy spectra that exciton quasiparticles can have in these structures. The number of film layer...

By Jovan Šetrajčić, Siniša Vučenović, Matilda Vojnović

Fillers play a crucial role in enhancing product performance and reducing production costs. To be used in various industries, fillers must be readily available, affordable, pure, non-toxic, and meet specific physical and chemical standards. This study examines limestone and dolomite fillers, focusing on their chemical composition, mineralogical pro...

By Nedzad Haracic, Nevzet Merdić, Ilhan Bušatlić, Nadira Bušatlić, Adelina Pašalić

Monitoring cavitation erosion in materials is crucial for their performance in environments characterized by severe fluid flow conditions. Materials such as metals, ceramics, and composites, commonly used in these applications, must possess specific mechanical properties to effectively resist cavitation erosion. Additionally, various environmental ...

By Ana Alil, Stanica Nedović, Sanja Martinović, Tatjana Volkov Husović

In this work, I aim to examine the various influences of process parameters on the physical and mechanical properties of extruded polystyrene (XPS). Since XPS belongs to the group of thermoplastic polymers, its properties are significantly affected by thermal treatment, particularly temperature and pressure. However, in addition to these key factor...

By Sarah Lenasi

Technological developments and the demand for innovative products in catalysis and energy conversion/storage have driven the development of high entropy alloys (HEAs) and high entropy oxides (HEOs). HEAs, formed by combining four or more elements in nearly equal ratios, and HEOs have become prominent research topics for the above-mentioned technolo...

By Umay Çınarlı Yavaş, Ahmet Turan, Taner Akbay

Fuels are substances that release heat energy during combustion due to the oxidation process that occurs. In order for a substance to serve as fuel, it is important that it has a high calorific value, which is most affected by the carbon content. Sulfur has a very small effect on this characteristic of the fuel but is considered as a negative compo...

By Lamija Mujkanović, Nadira Bušatlić, Nedžad Haračić, Nevzet Merdić

In this research, the resulsts of bentonite characterization by XRF before and after adsorption are presented. The influence of temperature and pH on the capacity and efficiency of adsoption of lead (II) ions using bentonite is determined by adsorption experiments for initial lead (II) concentrations of 200, 300 and 400 mg/L, adsorbent dosage of 1 ...

By Amna Karić, Amra Odobašić, Edisa Papraćanin, Azra Halilović

Aluminium and its alloys, with superior mechanical properties and recyclability, are essential for industries such as transportation, construction, and packaging. Its recyclability supports sustainability by reducing greenhouse gas (GHG) emissions, energy consumption, and reliance on primary aluminium, making secondary aluminium production increasi...

By İlayda OZBAG TOGACAR, Umay Cinarli Yavas, Meral Baygul, Durdane Degerli, Sedat Arslan, Arif Karaca, Ahmet Turan