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

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

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

Pyrophyllite (Al2Si4O10(OH)2) is a layered phyllosilicate mineral with a basic 2:1 crystal structure,consisting of an aluminum octahedral layer placed between two silicon tetrahedral layers (T-O-T),connected by weak Van der Waals forces, which results in easy structural disruption. Naturalpyrophyllite has an electroneutral surface, which causes a h...

By Jasmina Kustura, Belma Halilhodžić, Enita Kurtanović, Kenan Kozlo, Amra Čizmić, Adnan Teletović, Atif Hodžić, Muhamed Harbinja

The HK30Nb steel pipe casting was obtained by centrifugal casting. This steel is austenitic stainless steel grade AISI HK 30 and is standardized according to ASME SA-351 in as cast condition. HK 30 Nb steels not standardized i.e. it is HK 30 steel modified with niobium. In addition to the required mechanical properties, this steel is also tested fo...

By Mirsada Oruč, Alen Delić, Almaida Gigovic-Gekic, Raza Sunulahpašić

Metallurgical coke as a fuel, reducing agent and permeable material in high-pressure processes must have pronounced strength and granulation properties due to expected changes in high temperature conditions. The best quality of metallurgical coke is achieved when coal mixtures satisfy a certain range of rheological parameters. The characterization ...

By Sulejman Muhamedagić, Amina Kurtović, Azra Halilović

In this paper were investigated the effect of hydrochloric acid concentration and addition of oxidizing agents on the rate of general corrosion of copper.For comparison, the corrosion rate in distilled water was also tested.Taffel extrapolation method was used for investigation of general corrosion of copper. Taffel extrapolation method implies sca...

By Farzet Bikić, Dejana Kasapović