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Possibilities of using plant species from 62С0* Ponto-Sarmatic steppes natural habitat for decorative purposes
Article

Possibilities of using plant species from 62С0* Ponto-Sarmatic steppes natural habitat for decorative purposes

Kaschieva, Mariya, Boycheva, Petya
The demographic crisis in Bulgaria: trends, problems and prospects
Article

The demographic crisis in Bulgaria: trends, problems and prospects

Dimitrov, Slavi
Assessment of natural background radiation in the tourist area of Biserna Cave based on in situ measurements
Article

Assessment of natural background radiation in the tourist area of Biserna Cave based on in situ measurements

Kalchev, Karamfil, Manova, Gergana, Manov, Lyubomir, Kulev, Nikolay
Overview of the Halyomorpha halys (Stål, 1855): Key Traits and Control Measures. Threats to agricultural crops in Bulgaria
Article

Overview of the Halyomorpha halys (Stål, 1855): Key Traits and Control Measures. Threats to agricultural crops in Bulgaria

Chamurliyski, Plamen
Volume 12 (2025): Issue 3 (November 2025)
Issue

Volume 12 (2025): Issue 3 (November 2025)

Ethnobotanical study of medicinal plants used for prevention and treatment of Covid-19 in Northeastern Bulgaria. Part 1: The source of phytotherapy knowledge and safety concerns
Article

Ethnobotanical study of medicinal plants used for prevention and treatment of Covid-19 in Northeastern Bulgaria. Part 1: The source of phytotherapy knowledge and safety concerns

Dragoeva, Asya, Dimitrova, Zheni, Lyoteva, Seliha, Koleva, Vanya
Water – the famous unknown factor of life
Article

Water – the famous unknown factor of life

Dochev, Veselin
Methodology for Reducing the Negative Impact of Non-Conformance in Technical Personnel Activity in the System of Continuing Airworthiness of Aircraft
Article

Methodology for Reducing the Negative Impact of Non-Conformance in Technical Personnel Activity in the System of Continuing Airworthiness of Aircraft

Shestakov, Vladimir, Kļepackis, Kirils, Kuleshov, Nikolay
Aerodynamic Design Methodology for Air Propellers of Swarm UAVs under Variable Mission Payloads
Article

Aerodynamic Design Methodology for Air Propellers of Swarm UAVs under Variable Mission Payloads

Bezpalyy, Viacheslav, Ukrainets, Yevgen, Myronenko, Kostyantyn, Loginov, Vasyl
Conceptual Design and Validation of a Hydrogen Training Airplane
Article

Conceptual Design and Validation of a Hydrogen Training Airplane

Kuk, Sebastian Piotr
Eddy Current Evaluation of Two-Layer Aircraft Structures with Carbon Fiber Reinforced Polymer Layers on Aluminum Alloy Substrates
Article

Eddy Current Evaluation of Two-Layer Aircraft Structures with Carbon Fiber Reinforced Polymer Layers on Aluminum Alloy Substrates

Uchanin, Valentyn, Aleschenko, Oleksiy, Derecha, Valeriy
Expert-Based Risk Assessment for Flight Safety Using Kendall's W and Pearson's Chi-Square
Article

Expert-Based Risk Assessment for Flight Safety Using Kendall's W and Pearson's Chi-Square

Petuhovs, Igors