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Вестник Казахского национального женского педагогического университета
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- Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, УТОЧНЕНИЕ ИЗМЕНЕНИЙ В ТАКСОНОМИИ НА ОСНОВЕ ФИТОХИМИИ ВИДОВ СЕМЕЙСТВА РОЗОЦВЕТНЫХ (ROSACEAE)(2021-03-22); ; The article lists the characteristics and phytochemistry of species belonging to relatives of rosaceae (Rosaceae) family, which relates to the specific taxonomy of the subspecies. Phytochemistry of seeds was studied by Prunus domestica L. and Armeniaca vulgaris L. As a result, it has been established that two types of seeds are identical to the types of microelements, vitamins and a number of fatty acids. If there were two separate species, it would not have formed sexually by sex. The mineral elements were determined by the atomic absorption spectroscopy (AAS) method. Atomic absorption spectroscopy (AAS) is a quantitative analysis method based on the properties of atoms - measured by the actual wave length. Detection of the tissues of the seeds that absorb the atoms was carried out by two atomic methods. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, СПОСОБЫ ОЧИСТКИ ПОВЕРХНОСТИ МЕТАЛЛОВ ГРУППЫ ЖЕЛЕЗА И СПЛАВОВ НА ИХ ОСНОВЕ ПЕРЕД НАНЕСЕНИЕМ ГАЛЬВАНИЧЕСКИХ ПОКРЫТИЙ(2021-04-04); ; It is shown that to ensure the purity of the surface of the metals of the iron group and alloys on their basis, their preliminary preparation is carried out by chemical methods, which further provide a reliable adhesion of the galvanic coating applied in the future to the base, which is very important when creating a new generation of devices. At etching there is a dimensional processing (loosening) of a surface at which 9-10 class of a roughness is reached, and the crystal structure of a material is exposed. At the stage of polishing the surface is leveled, smoothing roughness, respectively, increases the class of treatment to 12-13. An important step in the entire production process is the surface treatment of metals, since this determines the final appearance and functionality of the product, which is determined by the quality of the applied mercury-film coating. Thus, the method of chemical preparation of the surface of the material, which includes two successive stages – etching with a solution of TR and polishing in a solution of PR, was used by us in the future as the most acceptable in the preparation of the surface of contact materials for amalgamation. The quality of the mercury coating was determined by testing its resistance to centrifugation. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, НЕГАТИВНОЕ ВЛИЯНИЕ УВЕЛИЧЕНИЯ КОЛИЧЕСТВА АВТОТРАНСПОРТА НА ВОЗДУШНЫЙ БАССЕЙН(2021-03-22); The paper considers the negative impact of the road transport to the air in urban area. The calculation of harmful substances of the traffic flow of cars,trucks and buses while driving through the city of Almaty was carried out. The study is based on calculations of the volume of freons released. Observation was conducted in four points of the city. As a result of three measurements, the average value of the traffic flow was determined. As a control point, a micro- district was taken on the eastern outskirts of Almaty with an average traffic flow. The authors reveal a direct relationship between the state of the air basin and the intensity of the traffic flow.