Volume 53, Number 4, 2021

Bulgarian Chemical Communications, Volume 53, Number 4, 2021
Contents:
1	On the occasion of the 85^th anniversary of Prof. Christo Boyadjiev ANNIVERSARY Pages 395 – 396 Download PDF
2	To the memory of Prof. DSc Boryan Radoev (1941 – 2021) IN MEMORIAM Pages 397 – 398 Download PDF
3	A new analytical formula for calculating the energy gap value using the transmittance curve Original Research Article Pages 399 – 404 H. Slimani, N. Bessous Download PDF
4	Comparison of antioxidant activity and determination of epigallocatechin gallate and trace elements of green tea samples manufactured and exported by Turkey Original Research Article Pages 405 – 411 L. Paşayeva, D. Yuvalı, E. Köngül Şafak, G. Şeker Karatoprak, İ. Narin Download PDF
5	Intensification of CO₂ absorption using nanofluids in a structured packed columnon Original Research Article Pages 412 – 417 P. P. Selvi, R. Baskar Download PDF
6	Modelling and multicriteria analysis for selection of growth rate models for batch cultivation of Kluyveromyces marxianus var. lactis MC 5 yeast. Part I: Modelling with different types of growth rate models Original Research Article Pages 418 – 423 M. M. Petrov Download PDF
7	Study of wear intensity of solid nanocoatings deposited on steel 1.2080 (X12) Original Research Article Pages 424 – 428 V. Rupetsov, Iv. Uzunov, A. Mishev, Iv. Panov, E. Velev Download PDF
8	Experimental investigation of thermal & electrical performance of PV module using wick biomaterials Original Research Article Pages 429 – 435 V. K. Sohpal, S. Kumar Download PDF
9	Modelling and multicriteria analysis for selection of growth rate models for batch cultivation of Kluyveromyces marxianus var. lactis MC 5 yeast. Part II: Multi-criteria decision analysis for selecting of growth rate model Original Research Article Pages 436 – 441 M. M. Petrov Download PDF
10	Parameter optimization of a semi-batch water decontamination slurry photocatalytic reactor using Taguchi-Grey technique Original Research Article Pages 442 – 446 G. Munteanu , P. Karakashkova, A. Eliyas Download PDF
11	Influence of the binder on the mechanical stability and electrochemical properties of Zn electrode for rechargeable zinc-air batteries Original Research Article Pages 447 – 450 B. Abrashev, D. Uzun, V. Terziev, G. Raikova, K. Petrov Download PDF
12	Selected papers from 7^th International Conference on New Trends in Chemistry, September 25-26, 2021, Online https://icntcconference.com/ Selected Papers Pages 451 – 452 Download PDF
13	Investigation of photocatalytic degradation of methylene blue by titanium dioxide composites Original Research Article Pages 453 – 455 E. Akyol, G. Tonbul Download PDF
14	Theoretical and experimental photodegradation of Phosmet via oxidation techniques in the presence of aqueous TiO₂ suspension Original Research Article Pages 456 – 463 B. Eren, Y. Y. Gurkan Download PDF
15	Surface modification of zeolite and kaolin with 3-(aminopropyl) triethoxysilane and 3-(trimethoxysilyl) propyl methacrylate Original Research Article Pages 464 – 470 C. Özel, C. Akat, R. Alosmanov, M. U. Kahveci, C. Emir, S. Yücel Download PDF
16	Investigation of stability and activity of poly (ethylene-alt-maleic anhydride) copolymer at different pHs and in simulated body fluids Original Research Article Pages 471 – 474 D.Ş. Daşdan Download PDF
17	Thermal analysis and isoconversional kinetic study of thermal decomposition of polycyclohexene oxide polystyrene (PCHO-PST) comb-shaped polymer Original Research Article Pages 475 – 479 H. Dolas, N. Genli Download PDF
18	Preliminary investigation into the synthesis and characterisation of single nucleotide polymorphs of human glutathione-S-transferase class PI Original Research Article Pages 480 – 485 S. Mathura Download PDF
19	Ceramics based on powder mixtures of β-tricalcium phosphate and potassium hydrogen sulfate prepared under mechanical activation in acetone medium Original Research Article Pages 486 – 495 T. V. Safronova, M. M. Akhmedov, T. B. Shatalova, S. A. Tikhonova, G. K. Kazakova, M. R. Kaimonov, A. V. Knotko Download PDF
20	AUTHOR INDEX Pages 496 – 499 Download PDF
21	SUBJECT INDEX Pages 500 – 502 Download PDF
22	Instructions about Preparation of Manuscripts Pages 503 – 504 Download PDF
23	CONTENTS Page 505 Download PDF