Breeding technology of camels

The article presents information about the terminology of camel breeds, hybrid terms, as well as the method of purebred breeding used in the breeding of camels, interbreeding, methods of interbreeding single-humpback and double-humpback camels

The research of secondary resources in corn processing

The effective use of secondary resources of corn processing and maximum extraction of components with useful and specific physical and chemical characteristics allow production of innovative national fermented milk products with functional and technological properties of high nutritional value. The purpose of the scientific research was to study the composition of mineral, chemical and biologically valuable substances of raw materials such as fresh roots, grains and stalks of Zea Mays corn. The main direction of the scientific research is the substantiation and selection of secondary raw materials during the processing of corn, which contain biologically active substances of high nutritional value. Creation of scientific bases for designing the composition of multi-component food products and use of non-traditional types of raw materials, improvement of technology is one of the urgent issues of scientific and practical importance. The object of research is the fresh root, grain and stigmas of corn of the genus Zea Mays. Physical and chemical indicators, vitamin and mineral composition were determined during the research. By recycling secondary resources in corn processing, it is possible to obtain an extract with a biologically active substance, and by extracting the most useful components from it, it allows obtaining innovative products with functional properties. Analysis of existing technologies of secondary resources after corn processing clearly shows that none of the available technological solutions ensure the preservation of their integrity and quality. In this regard, the results of the study of physical and chemical indicators, vitamin and mineral composition of the research object contribute to science. From this, it can be concluded that the selected secondary resources can be considered as a source of extraction of a biologically valuable substance with antioxidant properties

Pressure and temperature dependences in p-ZnAs2 at high pressures

Kinetic effects in p-ZnAs2 were measured at hydrostatic (P ≤ 9 GPa) and quasi-hydrostatic (to P ≤ 50 GPa) pressures on pressure buildup and depressurization. A conclusion on the occurrence of two phase transitions was made: I-II at P = 9-15 GPa and II-III at P = 30-35 GPa. Based on the temperature dependences of electrical resistance, it was shown that the conductivity is determined by activation mechanisms in a temperature range of 250-400 K; in this case, the activation energy changed with temperature and pressure. The pressure dependences of the activation energy and the coefficient R 0, which characterizes the mobility, concentration, and effective mass of carriers, were calculated. © 2013 Pleiades Publishing, Ltd

Maxillary sinus cyst-minimally invasive treatments

The analysis of the work with the use of endoscopic technologies and radiosurgery in outpatient settings for 2016-2018 was carried out. 67 male and female patients with a diagnosis of maxillary sinus cyst and chronic rhinitis were Treated with the use of an endoscope and A Surgitron apparatus. Selected modes of operation and methods of anesthesia in outpatient settings. Conclusions about medical, economic feasibility in outpatient surgery in the North.Проведен анализ работы с применением эндоскопических технологий и радиохирургии в амбулаторных условиях за 2016-2018 г. Пролечено 67 пациентов мужчин и женщин с диагнозом киста гайморовой пазухи и хроническим ринитом с применением эндоскопа и аппарата «Сургитрон». Подобраны режимы работы и методы анестезии в амбулаторных услових. Сделаны выводы о медицинском, экономической целесообразности в амбулаторной хирургии в условиях севера

The study of the indicator of water activity during vacuum drying оf apples and pears growing republic of Kazakhstan

The article studied the patterns of changes in water activity during vacuum drying of apple varieties: Baiterek, Sarkyt and Saya and pear varieties: Syilyk, Zhazdyk and Nagima. Studies have established that in all the studied varieties of apple and pear, the following pattern is observed: in the first four hours of the drying time, the water activity indicator decreases monotonously, and the subsequent drying time drops sharply. This pattern is explained by the fact that after four hours of drying time, part of the remaining weakly bound moisture is gradually removed from the product, and then the bound moisture. Studies have shown that dehydration of fruits, the water activity characterizing the qualitative properties of the product decreases: for apple varieties from 1.0 to 0.62 ± 0.01, for pear varieties this indicator decreases from 1.0 to 0.65 ± 0.04. On the basis of mathematical processing of experimental data, a power-law dependence of water activity on the duration of drying was established. The established pattern of changes in water activity from the duration of drying in subsequent works will be used to determine the optimal drying mode for apples and pears in order to produce high-quality dry powders for the food industry

Study of the Coefficient Evaporation Resistance of Various Apples and Pears Varieties Growning in the Southern Regions of Kazakhstan

Studies have established that various drying periods are observed during the drying process: for example, for apple varieties, the first drying period is 5.45...6.10 hours, and for pear varieties 6.12 ...6.25 hours. The duration of the second drying period for apple varieties is 4.15...3.50 hours, and for pear varieties 4.35...4.48 hours. The analysis of the drying curve showed that the boundary between the periods of constant and falling land velocity, i.e. the critical humidity for apple varieties is on average 27 ± 2.1%, and for pear 30.1 ± 2.5%. An analysis of the kinetics of moisture evaporation shows that in an apple during the first four hours of drying, on average, 2.71 g evaporates, and for the next two hours it decreases monotonically to 2.31 g. The same picture of moisture evaporation dynamics is also observed for pears: for the first four hours, on average, 3.41 g evaporates, and for the next two hours, the evaporation dynamics decreases to 2.78 g. Studies have established that the coefficient of evaporation resistance for apple varieties: Baiterek, Sarkyt and Saya is µ = 2.03 ± 0.07, for pear varieties: Sylyk, Zhazdyk and Nagima is µ = 2.3± 0.05

Vacuum Drying of Apple, Pear and Raspberry Varieties Growing in the Southern Regions of the Republic of Kazakhstan

The article develops a methodology for conducting experimental studies on vacuum drying of varieties of apples, pears and raspberries growing in the southern regions of the Republic of Kazakhstan. Experimental studies and analysis of the influence of regime parameters on the drying process of selected products have been carried out, depending on the height of the layer of the dried material, the degree of grinding of raw materials, the degree of heating of the dried material and the pressure of the medium in the evacuated chamber.The analysis of the obtained drying curves for apples, pears and raspberries, in the initial state having a liquid paste-like mass, at the pressure in the vacuum chamber of 0.008 MPa, the loading height of 3, 4 and 5 mm, the degree of heating of the dried material - about 40 ° C, previously selected for research, shows that they have a similar character - all drying curves have quite clearly defined segments: the period of establishing regime parameters or the period of the beginning of drying, the period of constant drying rate and the period of decreasing drying rate.The results of experimental studies are generalized and based on them, equations describing the dynamics of moisture evaporation from the surface of products in the form of fourth-degree polynomial equations are obtained

Electric and galvanomagnetic properties of CD₃AS₂-20 mol % MnAs composite under high pressure

The pressure dependences of electrical resistance, Hall coefficient, charge carrier mobilities, and magnetoresistance of the Cd₃As₂-20 mol % MnAs composite are investigated at pressures up to 9 GPa. The pressure dependences of all the listed properties exhibit features related to phase transitions. The presence of pressure-induced negative magnetoresistance is registere

Magnetization of Cd3As2-30 mol % MnAs composite at high pressure

In this article, we report research data for the isothermal magnetization of a composite consisting of Dirac semimetal and MnAs ferromagnet (30 mol %) at pressures up to 5 GPa. A magnetic transformation in MnAs inclusions, the size of which presumably varies from a micro- to nanoscale, has been found to be similar to that in bulk MnAs compound, except for a hysteresis in the range of magnetostructural transformatio

Spin-Polarized Electric Current in Cd48.6Mn11.4As40 Nanocomposite

Abstract: For the first time, the temperature dependences of the electrical resistivity and magnetization of the Cd48.6Mn11.4As40 nanocomposite were measured in the temperature range of 10–350 K. It is shown that the electrical properties of Cd48.6Mn11.4As40 are associated with spin polarization of intrinsic electrons in the Cd3As2 matrix by spin-polarized electrons injected into it from ferromagnetic MnAs nanoclusters. With an increase in the magnetization of the entire sample, the angle between the magnetization directions of individual nanoclusters decreases and the spin-polarized current increases. Furthermore, an increase in the concentration of intrinsic carriers in the matrix leads to an increase in the spin-polarized current. This concept is also confirmed by measurements of current–voltage characteristics (CVCs) at voltages of up to 5 V at temperatures both below critical temperature Tcg = 241 K of cluster glass formation (at 77 and 172 K) and above it (at 273.15 and 373.15 K), which exhibit an increasing deviation from the ohmic behavior with an increase in the stress. This means that the greater the spin polarization of intrinsic electrons in Cd3As2 due to an increase in the injection of spin-polarized electrons from MnAs with an increase in the voltage, the higher the current. © 2021, Pleiades Publishing, Ltd