Vol. 77 No. 1 (2024)

Published: 29-01-2024

Full Issue

Table of Contents

Mathematics

Mersenne Numbers in Generalized Lucas Sequences

Alaa Altassan, Murat Alan

3-10
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Chemistry

Upconversion Luminescence Properties of Ho3+/Tm3+/Yb3+ Co-doped NaGd(MO4)2 Prepared by Hydrothermal Method

Zhaoguang Zhang, Kuaile Dang, Huajian Li, Zeyu Song, Xiaochen Yu

11-19
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Photo-fixation of Ag onto TiO2 Powder Films for Improved Photocatalytic Activity and Atomic-absorption Determination of Residual Noble Metal in Dyes Solution

Dobrina Ivanova, Elisaveta Mladenova, Nina Kaneva

20-29
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An Endemic Species Nepeta phyllochlamys P. H. Davis: Composition of Essential Oil and Antimicrobial Activity of Extracts

Zeynep Gülcan, Yavuz Bülent Köse, Gökalp Işcan, Mine Kürkçüoǧlu

30–39
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Biology

Breast Cancer Stem Cells – Diagnostic and Prognostic Significance

Zdravka Petrova, Rossen Spasov, Radostina Alexandrova

40–47
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Lateralized Active Avoidance Learning and Memory to Ang II and Losartan Microinjected into Amygdala in Rats Depression Model

Roman Tashev, Hristina Nocheva, Margarita Velikova

48–53
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Immunohistochemical Study of Female Breast Cancer in Varna, Bulgaria

Galina Yaneva, Ivan Maslarski

55–61
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Physical Geography

Structural-genetic Characteristics of Landscapes of the Southeastern Slope of the Great Caucasus and Study of Their Modern State

Afag Z. Hajiyeva, Firuza M. Jafarova, Gulnar N. Hajiyeva

62–72
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Engineering Sciences

New Approach to Underwater Image Enhancement Using Modified Residual Blocks in Generator Architecture for Improved Cycle Generative Adversarial Networks

Karthik Selvaraju, Samson Ravindran Rajamani

73–81
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Automated Statistical Analysis for Improving HEIs Training Performance

Silvia Gaftandzhieva, Rositsa Doneva, Milen Bliznakov

82–90
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Design and Implementation of Multilevel Inverter Topology with Reduced Switching Components

Jayakumar Velayutham, Karthikeyan Ramasamy

91–100
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Optimization of Technological Schemes for Construction of Open Mine Roads

Danail Terziyski

101–110
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Medicine

Pulmonary Bacterial Pathogens in Patients with Cystic Fibrosis

Nadia Kolarova-Yaneva, Valentina Edreva, Nikolay Yanev, Lyubomir Beshev, Vania Nedkova

111–117
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In Vitro Wound-healing Activity of Ziziphus jujuba and Its Anti-inflammatory Effects in Rats

Insaf Fatima Zohra Mansour, Cennet Ozay, Fadime Aydın Kose, Soraya Rahmanı, Omar Kharoubı

118–126
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Chemerin in Obese Patients with Nonalcoholic Fatty Liver Disease with or without Prediabetes

Vera Karamfilova, Iveta Nedeva, Yavor Assyov, Antoaneta Gateva, Tsvetelina Velikova, Nikolay Cherkezov, Ludmila Mateva, Zdravko Kamenov

127-136
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Echocardiography and Biomarker-based Regression Models for the Detection of Gestational Hypertension in Pregnant Women

Dolina Gencheva, Fedya Nikolov, Ekaterina Uchikova, Rosen Mihaylov, Blagovesta Pencheva

137–147
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Association of the MTHFR Gene Polymorphisms with Efficacy and Toxicity of Methotrexate in Patients with Juvenile Idiopathic Arthritis

Margarita Ganeva, Stefan Stefanov, Albena Teltcharova-Mihaylovska, Reni Tzveova, Radka Kaneva, Radoslava Saraeva, Katya Temelkova

148–155
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Agricultural Sciences

Polyamine Alterations of Triticale in Response to Herbicide, Drought and Waterlogging Treatments

Zornitsa Katerova; Asya Petrova, Iskren Sergiev, Dessislava Todorova

156–164
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