https://rep.brsu.by:443/handle/123456789/3 2026-05-06T13:36:01Z 2026-05-06T13:36:01Z Серый, А. И. https://rep.brsu.by:443/handle/123456789/10804 2026-02-25T22:02:29Z 2014-01-01T00:00:00Z

To the Problem of Compton Rotation of Photons in a Strong Magnetic Field: Limit of Total Spin Polarization of Electrons Серый, А. И. A formula is obtained for Compton rotation angle of the plane of linear polarization of photons per unit path in electron gas with high degree of spin polarization of electrons in quantizing magnetic field.

2014-01-01T00:00:00Z Хуа Эрчжи, Швед И.А., Поплавская Т.В., Ильичева И.Л. https://rep.brsu.by:443/handle/123456789/10751 2025-12-15T22:02:33Z 2025-12-15T00:00:00Z

Cитуативный анализ имиджа городов Брест и Хэфэй в сознании носителей различных лингвокультур Хуа Эрчжи, Швед И.А., Поплавская Т.В., Ильичева И.Л. Статья посвящена проблеме восприятия образа территории. Важным инструментом исследования становится контрастивный анализ образов двух городов как важных миромоделирующих и аксиологических ментефактов в языковом сознании носителей китайской и белорусской лингвокультур. Материал исследования составляют данные свободного ассоциативного эксперимента, проведенного в Китайской Народной Республике и Республике Беларусь с двумя группами респондентов: студенты и магистранты Аньхойского университета и Брестского государственного университета имени А. С. Пушкина. Общей теоретической основой исследования является принятая в современной психолингвистике концепция языкового сознания. Научная новизна исследования состоит в том, что с помощью антропометрического подхода к семантизации языка выявлены особенности восприятия территории ее жителями. Установлено, что ассоциативный материал в значительной степени параметризирован и тематически разнороден. Выявлена специфика ядерно-п ериферийного зонирования ассоциатов. На основе семантической интерпретации выделены когнитивные слои в структурах образов городов Хэфэй и Брест. Работа вносит вклад в развитие ассоциативной лингвистики, лингвокультурологии, межкультурной коммуникации.

2025-12-15T00:00:00Z Kaklyugin, Aleksandr Kastornykh, Luybov Stupen, Nonna Kovalenko, Viktor https://rep.brsu.by:443/handle/123456789/10744 2025-12-12T22:02:40Z 2025-01-01T00:00:00Z

Assessment of long-term water resistance of modified pressed gypsum composites Kaklyugin, Aleksandr; Kastornykh, Luybov; Stupen, Nonna; Kovalenko, Viktor Introduction. The most important indicator of the durability of gypsum materials is their water resistance, which is most often assessed by the degree of strength reduction after short-term water saturation. In our view, the durability of composite building materials based on gypsum and other air binders can be more accurately predicted based on the results of longer laboratory tests, which include prolonged immersion of control samples in water, as well as an assessment of their ability to restore their original strength after re-drying. The aim of this study is to assess the effect of a complex modifier, consisting of a monosubstituted salt of orthophosphoric acid and a fine carbonate filler, on the water resistance properties of pressed gypsum composites after prolonged immersion in water. Methods. The technical characteristics of the studied composites were determined using standard methods with control samples manufactured by pressing. The long-term water resistance of the material was assessed based on the change in the values of the softening and water resistance coefficients, calculated based on the results of testing control samples stored for 1, 7, 28 and 90 days in water. Results. We show that the high-strength fine-crystalline structure of pressed gypsum binder without modifying additives is characterized by extremely low strength, both during short-term and long-term immersion of control samples in water, as well as reduced ability to restore its original strength after drying. This is revealed in the comparison of the water resistance indicators of the material, even with similar characteristics of cast samples made from pure gypsum binder, and especially with pressed samples from composite binders containing the proposed complex modifier. We established that gypsum-modified pressed composites are characterized by fairly high durability during prolonged immersion in water. After 90 days of testing, the softening coefficient of the studied compositions of composite binders ranged from 0.62 to 0.64, and the water resistance coefficient ranged from 0.90 to 0.95. This indicates the possibility of using products based on them in building enclosures, as well as in rooms with humidity above 75 %, provided that the water resistance of the studied pressed composites is maintained for a long time only if complete hydration of the gypsum binder is ensured.

2025-01-01T00:00:00Z Makoed, I.I. https://rep.brsu.by:443/handle/123456789/10741 2025-12-11T22:02:46Z 2025-06-01T00:00:00Z

Magnetite nanoparticles doped with rare earth ions: synthesis, structural, and magnetic properties Makoed, I.I. Taking into account the practical signiﴐ- cance of magnetite nanoparticles, several nanostruc- tured magnetite samples with doping of 2.5% Sm, Dy, La, and Lu rare earth ions were synthesized using the co-precipitation method. The structural and magnetic properties of the obtained doped nanoparticles were investigated in detail using transmission electron microscopy, X-ray di럿raction, small-angle X-ray scat- tering, and magnetic measurements. All the doped nanostructured magnetite samples have a cubic phase with spinel crystal structure Fd 3 m; a nanoparticle size is ranging from 20 to 32 nm. Changes in the char- acteristic Fe–O bond lengths indicated that the doping rare earth ions mainly occupy octahedral sites in the oxygen unit. The size of the nanoparticles depends on the type of doped rare earth due to di럿erence in ionic radius. Neutron di럿raction data indicated that the magnetic structure of doped magnetite nanoparticles is ferrimagnetic. The magnetic measurements showed a superparamagnetic state in all the doped magnetite nanoparticles. It is assumed that noticeable changes in the structural and magnetic properties of magnetite nanoparticles compared to bulk matter are primarily associated with a defect-rich structure on the surface of those nanoparticles and the e럿ect of rare earth ions doping on it.

2025-06-01T00:00:00Z