THE INFLUENCE OF MANGANESE ON THE TENSILE STRENGTH OF HIGH CARBON STEEL C66D
Modern steel production cannot be imagined without manganese, because almost all steels contain manganese.In this paper, we present the impact of manganese on the tensile strength values of high-carbon steel. This paper presents an improvement in the quality of wire rolling with control of manganese content in steel and the value of C-equivalent, i...
By Aida Imamović, Omer Kablar, Mirsada Oruč, Vedina Purić-Selimović, Lamija Sušić
DIFFERENCE OF THE CREEP RATE OF PRE-STRAINED AND NO PRE-STRAINED SUPERALLOY N07080
This paper describes the difference in the creep rate of pre-strained and no pre-strained samples of superalloy N07080. The primary strengthening mechanism of this superalloy is based on the precipitation of fine and coherent particles of the intermetallic γ' phase Ni3(Al,Ti) that ensure good creep resistance. In the case of additional streng...
By Omer Beganović, Belma Fakić, Derviš Mujagić
EFFECT OF COOLING PARAMETERS ON TENSILE PROPERTIES OF CONCRETE REINFORCING STEEL IN COILS
The production of concrete structural steel using controlled cooling with Tempcore technology enables the production of high-strength steel with improved adhesion to concrete while ensuring homogeneous properties for the construction of buildings, bridges, highways, and other construction facilities in any geographical environment. Concrete reinfor...
By Vedina Purić, Omer Beganović
RISK ASSESSMENT USING THE MATRIX METHOD FOR THE JOB "POWER LINE FITTER" IN A BUSINESS ENTITY
The assessment of workplace hazards involves recognizing the likelihood of occurrence and the severity of potential injuries or occupational diseases to employees. The risk assessment is performed by a team of experts from various scientific and professional fields to objectively evaluate the attributive and/or numerically expressed level of risk, ...
By Branko Radović, Bojana Zlatković, Anica Ranđelović
Georgi-Glashow SU(5) - basis for proton decay and neutrino mass problem from SM to GUT
In this article we present the original Georgi-Glashow model with gauge and fermion sector derivation in order to show grand unified theory (GUT) through this model, but also to correlate and Standard Model (SM). One of the correlations reside in neutrino mass sector where both and Standard Model (SM) see neutrinos as massless particles...
By Emina Džaferović-Mašić
ELECTROCHEMICAL INFLUENCE OF AMINO ACIDS ON THE CORROSION OF BIOALLOYS
Shape memory alloys are of great commercial importance from biomedical applications to smart materials. The electrochemical behavior of Cu-Al-Zn alloy in phosphate buffer without and in the presence of amino acid was investigated. Electrochemical researches were performed in a traditional three-electrode system by means of the Tafel extrapolation m...
By Safija Herenda, Merima Begović, Edhem Hasković, Vanja Asanović
INVESTIGATION OF INHIBITORY EFFECT OF THE RASPBERRY FRUIT EXTRACT (Rubus idaeus L.) ON CORROSION OF COPPER IN 3% NaCl SOLUTION
The paper presents an examination of the possibility of applying raspberry fruit extract (Rubus idaeus L.) as a green inhibitor of general corrosion of copper in 3% NaCl. Raspberry fruits (Rubus idaeus L.) sort Polka was collected from the Starposle near Kakanj, Bosnia and Herzegovina. Raspberry fruit extracts in ethanol were obtained by the Soxhle...
By Dejana Kasapović, Fehim Korać, Farzet Bikić
ADSORPTION OF Cu(II) IONS USING FOUNDRY WASTE
This article deals with the analysis of the adsorptive properties of the waste produced during the shot blasting of castings in foundries. During this process, particles of moulding mixture and scale that remained on the surface of the casting after removal from the mould are removed. Since this waste contains particles of moulding mixture (SiO2, c...
By Anita Štrkalj, Zoran Glavaš
CALCULATION OF THERMAL CONDUCTIVITY FOR CRYSTALLINE NANOSTRUCTURES
We have introduced a theory for the calculation of thermodynamic characteristics for some characteristic nanostructures (ultrathin films and superlattices), using the adapted method of two-time temperature Green's functions. In this paper, he has determined the coefficient of thermal conductivity using the definition of free energy and then compare...
By Siniša Vučenović, Jovan Šetrajčić
CATECHOLASE ACTIVITY AND SUBSTITUENT EFFECT OF NEW HOMOLEPTIC COPPER(II) CHALCONE COMPLEXES
Three new neutral complexes of copper(II) containing chalcone ligands derived from 2'-hydoxyacetophenone and 4-substituted benzaldehydes were synthesized. Complexes were prepared by solution synthesis and characterized by spectroscopy. The catalytic activity of complexes was examined in the reaction of 3,5-di-tertbutylcatehcol (DTBC) oxidation. The...
By Selma Hadžalić, Irnesa Osmanković, Adnan Zahirović