Bulgarian Chemical Communications, Volume 58, Special Issue A, 2026
International Conference “Science-Industry-Society Nexus for Sustainable Regions”, organized by the Burgas State University “Prof. Dr. Assen Zlatarov”and the Thracian University-Odrin, Turkey, June 12 - 14, 2025, Burgas, Bulgaria
CONTENTS
1 Relation between terrestrial background radiation and air dose rate
Original Research Article
Pages 5 – 9
S. Nedkova, P. V. Atanasova
Article [PDF]

2 In silico assessment of skin sensitization potential of polyphenolic metabolites from Sideritis syriaca using QSAR toolbox
Original Research Article
Pages 10 – 15
G. Rusev, V. Dzhogov, L. Gonsalvesh

Article [PDF]
3 Extraction of microplastics from marine sediment in Burgas Bay, Black Sea
Original Research Article
Pages 16 – 21
S. Turmanova, Y. Hristov, D. Kiryakova, E. Ivanova, P. Atanasova, G. Kolchakova, A. Ilieva, E. Mollova, A. Dimitrov, N. Todorov, G. Grigorova
Article [PDF]

4 Chemical and biophysiological processes accompanying patients with obstructive sleep apnea syndrome (OSAS) in group therapies at St. Anna Hospice
Original Research Article
Pages 22 – 25
S. Petkova-Georgieva
Article [PDF]

5 Direct synthesis of graphene by using combined electrolysis and ultrasonic methods
Original Research Article
Pages 26 – 30
D. Georgiev, I. Markovska, F. Yovkova, S. Kozarev
Article [PDF]

6 Phase analysis and color characteristics of Co-, Cu-, and Ni-doped ceramic pigments
Original Research Article
Pages 31 – 34
M. Georgieva, F. Yovkova, A. Georgieva, I. Markovska, M. Minova
Article [PDF]

7 Application of adsorption isotherms for Cd(II) uptake by vine rod-derived biochar: a comparative study
Original Research Article
Pages 35 – 43
V. Georgieva, V. Syuleyman, L. Gonsalvesh, S. Mileva, D. Asamova, S. Genieva
Article [PDF]

8 Air dose rate analysis and its relation with temperature and humidity
Original Research Article
Pages 44 – 48
S. Nedkova, P. Atanasova
Article [PDF]

9 Synthesis and physicochemical characterization of rhodium(III) hydrogenselenite
Original Research Article
Pages 49 – 53
K. Todorova, V. Georgieva, S. Genieva
Article [PDF]

10 Kinetic study of the pyrolysis of chitosan-zeolite composite
Original Research Article
Pages 54 – 58
K. Zafirova, D. Zvezdova
Article [PDF]

11 Comparative study of the textural properties of chitosan, zeolite and their composite membrane
Original Research Article
Pages 59 – 64
K. Zafirova, L. Gonsalvesh, D. Zvezdova
Article [PDF]

12 INSTRUCTIONS TO AUTHORS
Pages 65 – 66
Instructions [PDF]