The work aims to design a pyrophyllite-modified carbon paste electrode for pesticide detectionin aqueous solutions. The structural and morphological characterization of naturalpyrophyllite clay for Parsovići mine, Bosnia and Herzegovina, and mechanically modifiedpyrophyllite was performed using X-ray diffraction analysis (XRD), scanning electronmic...

By Jasmina Grbović- Novaković, Anđela Mitrović_Rajić, Katarina Tošić, Sara Mijaković, Sanja Milošević-Govedarović, Ana Vujačić-Nikezić, Bojana Paskaš-Mamula, Jasmina Kustura, Enita Kurtanović, Belma Halilhodžić

Steel S690 QL is a high-strength quenched and tempered, fine-grained structural steel with a minimum yield strength of ReH of 690 MPa and with guaranteed toughness (Charpy) for rolled plates with a thickness of 3 to 50 mm. This paper presents the examination and analysis of the microstructure and grain size results after quenching an...

By Mirsada Oruč, Aida Imamović, Almaida Gigovic-Gekic, Milenko Rimac

More recently modified stainless steels have been used to produce various structural elements that work in complex operating conditions. Stainless steel X8CrNiS18-9 (standard EN 10088-3: 2005) is the most commonly used austenitic stainless steel due to its good machinability. This steel has high mechanical and working properties than...

By Derviš Mujagić, Aida Imamović, Mustafa Hadžalić

This paper describes the process of degradation of the structure of the inlet header of the intermediate reheater (MPr) 2 input header at the boiler of Unit 7 of the Thermal Power Plant Kakanj, determined on the basis of tests of replicas and hardness at characteristic places of the header. Headers, with minor delays, have been in co...

By Armin Husika, Belma Fakić, Milenko Rimac

In this paper, C45 medium carbon tool steel was investigated after various heat treatments. The thermal properties, specifically thermal diffusivity and thermal conductivity, were measured and also the microstructure analysis was done on a light microscope. Heat treatment of the samples included: 1) the normalization heat treatment a...

By Uroš Stamenković, Ivana Marković, Srba Mladenović, Dragan Manasijević, Ljubiša Balanović, Avram Kovačević, Milan Nedeljković, Jovana Božinović

We have introduced a theory for the calculation of thermodynamic characteristics for somecharacteristic nanostructures (ultrathin films and superlattices), using the adapted method of twotimetemperature Green's functions. In this paper, we have determined the coefficient of thermalconductivity using the definition of free energy and then compared t...

By Siniša M. Vučenović, Jovan P. šetrajčić

The translational symmetry of the distribution of atoms (ions) of the charge carriers (electrons orholes) system is broken by sputtering (doping),and due to the existence of two boundary surfaces.This is a model of high-temperature superconductors in which the observed symmetry breakingorthogonal to the CuO plane is treated as a perturbation. Singl...

By Jovan P. šetrajčić, Siniša M. Vučenović

Three new neutral complexes of copper(II) containing chalcone ligands derived from 2'-hydoxyacetophenone and 4-substituted benzaldehydes were synthesized. Complexes were preparedby solution synthesis and characterized by spectroscopy. The catalytic activity of complexes wasexamined in the reaction of 3,5-di-test-butyl catechol (DTBC) oxidation. The...

By Selma Hadžalić, Irnesa Osmaković, Adnan Zahirović

The paper describes the research methodology of the heat generated by the biologicaldecomposition of a mixture of sludge from WTP (wastewater treatment plant) and biowaste and itsuse outside the system for a controlled biodegradation process. Earlier research in this area definedthe optimal mixtures of sludge and biowaste that ensure quality manage...

By Muvedet Šišić, Vehid Birdahić, Sanela Beganović, Mirnes Duraković, Farzet Bikić

Wood is renewable, recyclable, climate-friendly material, and presents an important segment inachieving circular economy and sustainability concepts. To be able to link these two concepts,production and consumption systems need to transform towards sustainability. Wood-basedproducts play a role in mitigating climate change by reducing carbon from t...

By Petar Ćurić, Jelena Obranković, Andreja Pirc-Barčić