Volume 57, Iss.2, 2022

Journal of Chemical Technology and Metallurgy

57, Iss. 2, 2022
ISSN 1314-7471 (print)
ISSN 1314-7978 (on line)

Honorary Editor
Prof. Dr. Bogdana Koumanova
University of Chemical Technology and Metallurgy
 

Editor-in-Chief
Prof. Dr. Dancho Danalev
University of Chemical Technology and Metallurgy

 

Commercial and laboratory experience with catalytic cracking of straight run hydrotreated vacuum gas oil and H-oil gas oils

Dicho Stratiev, Ivelina Shishkova, Mihail Ivanov, Ivan Petrov, Vassia Atanassova, Simeon Ribagin, Krassimir Atanassov, Vesislava Toteva, Danail Stratiev

 

Properties of glass-fiber reinforced polycarbonates for centrifugal pumps impellers

Madina Isametova, Nikolay Dishovsky, Petar Velev, Akbota Duisengali

 

Investigation of elastomers ratio influence in the composites for truck tires treads production

Petrunka Malinova, Nina Ilieva, Vasil Metodiev

 

Composite thin films of azopolymer and embedded gold nanosized particles: evaluation of the effective complex refractive index

Nataliya Berberova-Buhova, Peter Sharlandjiev, Georgi Mateev, Lian Nedelchev, Blaga Blagoeva, Elena Stoykova, Dimana Nazarova

 

A novel Eu³⁺- doped tungstate glasses for red emission: preparation, structure and photoluminescence properties

Margarita Milanova, Lyubomir Aleksandrov, Reni Iordanova, Petia Petrova

 

Effect of different solid-state processing parameters on the synthesis of 0.45PZS-0.55PLZT

Sakri Adel, Bouremel Chérifa, Boutarfaia Ahmed

 

Thermal analysis of the cenosphere of floating ashes of thermal power plants for the production of aerated concrete

Shaixslam Takibai, Kuandyk Cakanov, Danzandorj Sungidmaa, Marat Kuderin, Bayan Kudryshova

 

Extraction of valuable components from winery’s by-products through soxhlet extraction. Effect of operational parameters on product yield and quality

Ralitsa Radoeva, Maria Karsheva, Bozhidar Enchev

 

Effect of CO₂ on the growth of Anabaena ambigua using external loop airlift photobioreator

M.B.Venkata Ramana Reddy, M. Mukunda Vani, T. Vijaya Kumar

 

Antimicrobial activity of amino acid derivatives of memantine

Aleksandra Tencheva, Ivanka Stankova, Tsvetelina Angelova, Veronica Nemska, Nelly Georgieva, Dancho Danalev

 

Deoxyribonuclease activity of allenic acids

Stephan Engibarov, Rositsa Tsekovska, Kiril Kirilov, Evan Gatev, Ivan Ivanov, Roumyana Mironova, Yordan Handzhyiski

 

Investigation of the effect of ultra-low temperatures in cryopreservation on the activity of the enzymes lactate dehydrogenase and gamma-glutamyl transferase

Madlena Andreeva, Veronika Karadjova, Rossen Stefanov

 

Efficient biosorbents for wastewater treatment: preparation, characterization, utilization

Vita Halysh, Inna Trus, Vyacheslav Radovenchyk, Mykola Gomelya

 

Precipitation of struvite from digested sewage sludge by sea water brine and natural flocculants

Gergana Peeva, Husein Yemendzhiev, Valentin Nenov

 

Assessing arsenic mobility in soils and sediments by single extraction procedure and real site remediation

Mária Heželová, Ľubomír Pikna, Dagmar Remeteiová, Vladimír Pramuk, Vladimír Fabian

 

Comparative evaluation of methods for quantification of mercury at trace level in aquatic biota samples as a bio-indicator

Veronika Ivanova, Caroline Oster, Andriana Surleva, Paola Fisicaro

 

Structure and catalytic ability of Sn-Co powders to oxygen reduction reaction in a model metal-air battery

Katya Ignatova, Iliyan Popov, Maria Shipochka

 

Reproducibility of the surface characteristics of anodized AA2024-T3 aircraft alloy with deposited Ce-conversion coating

Stephan Kozhukharov, Angel Dishliev, Christian Girginov

 

Oxidation of copper slag under nonisothermal conditions

Ivan Gradinarov, Dimitar Rusev, Dimitar Georgiev, Irena Markovska

 

Analysis of the technological process of forging workpieces in step-wedge strikers using FEM modeling

Andrey V. Volokitin, Abdrakhman B. Naizabekov, Evgeniy A. Panin, Andrey O. Tolkushkin, Toncho A. Koinov

 

Metallographic analysis of bimetallic bars produced from feedstock mill of the surfacing method TIG, of the method ESS LM and explosive cladding received

Sylwester Sawicki, Marcin Kwapisz

 

Analysis of the influence of deformation on the strength and microstructure of aluminum 1050, 2017 and 6060

Marcin Kwapisz

 

Influence of Fe-Si-Mg-REM-inoculants on the microstructure of iron castings with vermicular graphite

Denis Boldyrev, Sergey Nefedyef, Roman Dema, Maxim Kharchenko, Sergey Chernyi, Elena Suvorova, Emil Mihailov, Oleg Latypov, Rozina Yordanova

 

Formation of the properties and structure of rolled low-alloyed steel under the hot deformation process

Sergеy Sheyko, Valeriy Mishchenko, Yuriy Belokon

 

Effect of Zr content on the structure and thermal properties of PdCuNiSb(Zr) foams

Ludmil Drenchev, Vanya Dyakova, Jordan Georgiev, Georgi Stefanov, Daniela Kovacheva, Nikolay Marinkov, Stoyko Gyurov

 

Guide for Authors

 

The present issue of Journal of Chemical Technology and Metallurgy is published with the financial support of the Bulgarian Fund “Scientific Research”, Contract No КП-06-НП3/35, 15 November 2021.