Volume 59, Iss. 3, 2024

Journal of Chemical Technology and Metallurgy

59, Iss. 3, 2024
ISSN 1314-7471 (print)
ISSN 1314-7978 (on line)

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

Co-Editor
Assoc. Prof. Dr. Angelina Popova
University of Chemical Technology and Metallurgy

 

Study of solubility properties of components in acetate urea - triethanolamine - water system

Eldor Khusanov, Zhamshid Shukhurov

 

The dependence of acid-base equilbria and acidity constants of Congo red in buffer solutions on the ionic strength

Sokaina Saad Hemdan

 

Study of solubility of CO(NH₂)₂ - HOOC - COOH · NH₂C₂H₄OH - H₂O system

Bakhtiyor Akhmedov, Zhamshid Shukhurov, Ilkhom Abdurakhmanov, Rizamat Begmatov

 

Processing of a washed dry concentrate containing 26 % P₂O₅ into ammophosphate, sulpho- and nitroammophosphate fertilizers

Azam A. Rasulov, Shafoat S. Namazov, Atanazar R. Seytnazarov, Umarbek K. Alimov, Bokhodir E. Sultono

 

Bioactive properties and morphological features of hydroxyapatite/zinc oxide hybrid reinforced bio-based epoxy resin composites for dentistry

Sunday Gbenga Borisade, Seun Samuel Owoeye, Isiaka Oluwole Oladele, Oladimeji Niyi Iyanuoluwa

 

Investigating the effect of hydrogen peroxide on photocatalytic degradation of commercial paracetamol using TiO₂

Khoiriah Khoiriah, Reza Audina Putri, Ratnawati Ratnawati, Mega Puspita Sari

 

Antibacterial and antioxidant activity of cosmetic creams with extracts of dry flowers and fruits of Sambucus Nigra L. - use of Sambucus Nigra L. as a non-traditional chemical preservative

Kamelia Petkova - Parlapanska, Yordan Handzhiyski,Ekaterina Georgieva, Galina Nikolova,Yаnka Karamalakova

 

Review on the synthesis of alpha-lipoic acid and its therapeutic potential in experimental model of dementia

Hristian Staykov, Reni Kalfin, Lyubka Tancheva

 

Synthesis of Ag-modified TiO₂ sol-gel films and its application as photocatalysts for methylene blue degradation

Nina Kaneva, Assya Bojinova, Ralitsa Mladenova, Hristo Kolev, Bozhidar Stefanov

 

Diversity and phytate-degrading potential of yeast microorganisms isolated from sourdough

Nadezhda Dimitrova Nankova, Emiliya Ivanova Pisareva,Ventsislava Yankova Petrova, Anna Atanasova Tomova

 

Resource-saving wheat straw processing technology

Iryna Trembus, Nazarii Mykhailenko

 

Study of the influence of conservation treatment on the chromatic characteristics of arabic manuscripts

Iordanka Ivanova, Iskren Spiridonov, Rumyana Boeva

 

Physico-chemical analysis of quartz sand and technological waste used as a main raw material for glass production

Khidir A. Adinaev, Zulayhа R. Kadyrova

 

Application of spark plasma sintering as a method for producing new ceramic materials from silicon production waste

Gulzhainat Akhmetova, Gulnara Ulyeva, Kurmet Tuyskhan, Irina Volokitina

 

Synthesis and characterization of pure amorphous silicon oxide from treated kaolinitic clay using chemical extraction

Sunday Gbenga Borisade, Seun Samuel Owoeye, Aderonke Ayeni

 

Port injection of diesel, biodiesel, and petrol in a compression ignition direct injection diesel engine to mitigate nitrogen oxides and soot emissions

Subramanian Sendilvelan, Kannayiram Gomathi, Larissa Sassykova, Muthuswamy Prabhahar

 

Methane production from cow manure in the presence of Bi(III) complex of sulfamic acid

Anelia Tzanova, Nikolay Kaloyanov, Kamelia Ruskova,Alexander Zahariev

 

Synthesis of copolymers for protective coatings

Vladimir Merkulov, Gulnara Ulyeva, Gulzhainat Akhmetova, Andrey Volokitin

 

Methodology and equipment for researching corrosion cracking processes in casting alloys

Maria Krasteva

 

Exploring strengthening mechanisms of ultrafine-grained Fe₃₅Mn₂₇Ni₂₈Co₅Cr₅ high-entropy alloy processed by severe cold rolling process

Majid Naseri, Ahmad Ostovari Moghadam, Sergey Lezhnev, Nataliya Shaburova, Anatoliy Pellenen, Evgenii Bodrov, Evgeniy Panin, Marina Samodurova, Evgeny Trofimov

 

Computer simulation of preliminary heat treatment and radial-shear rolling of brass

Abdrakhman Naizabekov, Sergey Lezhnev, Evgeniy Panin,Alexandr Arbuz, Andrey Tolkushkin, Pavel Tsyba, Vasily Rubanik, Yury Tsarenko

 

Thermophysical properties of hypoeutectic, eutectic and hypereutectic Al-Si automotive alloys under ageing treatment

Ahmed Asif Razin, Dewan Sal-Sabil Ahammed, Akib Abdullah Khan, Mohammad Salim Kaiser

 

Microstructure and mechanical properties of aluminum and A356 alloy foams crystallized in a thin-walled water-cooled mold

Rositza Dimitrova, Tatiana Simeonova, Boyko Krastev, Angel Velikov, Valentin Manolov

 

Study of steels for the purpose of comparison in terms of quality indicators and energy effect of their production

Rositsa Gavrilova

 

Energy and power parameters of rolling profiles for wheel rims with reduced metal intensity and tapered seats

Valeriy Chigirinsky, Irina Volokitina

 

Free undamped spatial vibrations of a robot for process automation in metallurgy

Valentin Slavov, Verjinia Aleksandrova

 

Features of the formation of the nanostructural state of the surface layer of steel parts during processing and operation

Volodymyr Tsyganov, Sergey Sheyko, Oleksii Hrechanyi,Tetyana Vasilchenko, Elena Kulabneva,Anastasiia Hrechana

 

Elastohydrodynamic effects in lubrication of journal bearings under turbulent conditions

Juliana Javorova, Iliya Andonov, Traian Severin, Luminita Irimescu, Yovko Rakanov

 

Multimodal system for facial emotion recognition based on deep learning

Atanas Atanassov, Dimitar Pilev, Fani Tomova

 

Topology of galvanic isolated battery charging unit with power factor correction

Yovko Rakanov

 

Guide for Authors