https://elib.bsu.by:443/handle/123456789/313062 NPCS Vol.26, no.2 (2023), pp. 106-208 2026-04-22T11:57:34Z https://elib.bsu.by:443/handle/123456789/313217 Заглавие документа: Plasmonic Metallic Carbon Nanotube Assemblies Enhancing Raman Optical Activity of DNA for Ultra-Sensitive Detection of KRAS-Gene Point Mutations Авторы: Egorova, V. P.; Grushevskaya, H. V.; Krylova, N. G.; Vaskovtsev, E. V.; Babenka, A. S.; Krylov, G. G.; Anufreyonak, I. V.; Smirnov, S. Yu. Аннотация: Highly sensitive methods of chiral Raman optics that allow to record conformational dynamics of deoxyribonucleic acid (DNA) molecules are promising for discrimination of somatic point mutations in the genome of colorectal cancer. The results of the sequencing are important for the correct drug prescription. However, it is challenging due to very low signal intensity of Raman optical activity of DNA. We offer a novel KRAS gene sequencing method which is based on the dependence of Raman band enhancement by plasmonic carbon nanotube assemblies on the DNA helicoidality degree and which registers the change of the DNA Raman optical activity due to formation of a homoduplex between complementary probe and target DNAs. We demonstrate that such a technology is very sensitive one when studying the allele single-nucleotide polymorphism of tumor genome. 2023-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/313216 Заглавие документа: Spin 1 Particle with Anomalous Magnetic Moment in the Presence of Electric and Magnetic Fields: Solutions with Cylindric Symmetry Авторы: Ivashkevich, A. V.; Semenyuk, O. A. Аннотация: In the present paper, a spin 1 particle with anomalous magnetic moment has been examined in the presence of external uniform electric field. A generalized 10-dimensional Duffin–Kemmer–Petiau equation is specified in cylindric coordinates (t, r, φ, z) and the corresponding tetrad. Solutions with cylindric symmetry are searched, we diagonalize operators of the energy and the third projection of the total angular momentum. First we derive the system of 10 first order differential equations for functions FA(r, z) = FA(r)FA(z), A = 1, . . . , 10. The use of the Fedorov–Gronskiy method permits us to express these ten functions FA(r) through only three independent new functions. After that we derive the system of 10 differential equations for functions FA(z) dependent on the coordinate z. This system is resolved by means of the method generalizing the known approach applied when solving the similar problem in Cartesian coordinates. In this way the system of tree differential equations of the second order is obtained. After diagonalization of the mixing matrix, the system is reduced to separated equations for two new independent functions. Then the solutions in terms of confluent hypergeometric functions are constructed. 2023-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/313215 Заглавие документа: On the Recovery of Lost Data During the Formation of Digital Twins of Heat Supply Systems Авторы: Sednin, A.; Zherelo, A. Аннотация: This paper proposes general approaches to the process of collecting information with a focus on use of BigData and IoT technologies. As a basis for the proposed approaches, the implemented heat supply management systems developed by the Scientific Research Center for ACS TEP of the Belarusian National Technical University are used. Further directions of research of the developed systems are indicated. 2023-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/313214 Заглавие документа: Application of the Mixing Model to Analyze the Dynamics of Propagation of Multicomponent Multiphase Leakage in Individual Rooms of Containment Авторы: Moroz, I. O.; Trifonov, A. G. Аннотация: A model for analyzing the dynamics of the distribution of multicomponent multiphase leakage in individual rooms of containment has been built. The expiration of the steam-water mixture is considered, taking into account the transfer of non-condensable gases and solid aerosol impurities in the air environment of the containment. A mixing model was used to calculate the effective transfer coefficients (thermal conductivity, diffusion, viscosity) and carrier density. It has been accepted that non-condensable gases and solid aerosols are radioactive substances. A test calculation of the propagation of the vapor-liquid flow was carried out, taking into account impurity substances in a typical containment box for nuclear power plants with WWER-type reactors. 2023-01-01T00:00:00Z