Mechanical initiation is one among the strategies to integrate a solitary stage hydroxyapatite. during this work, hydroxyapatite was straightforwardly blended by mechanical processing during a planetary ball factory, utilizing phosphate dibasic dihydrate, CaHPO4.2H2O, and lime , Ca(OH)2, on the grounds that the forerunners or natural substances. The processing boundaries researched incorporated the span of processing, the processing media, and subsequently the ball-to-powder proportion (BPR). The outcomes up until this point demonstrated that the boundaries of processing are much of the time enhanced directly down to 2 hours of processing term, utilizing either chrome steel or agate processing media, and a BPR of 10:1. The advancement was affirmed primarily by X-beam diffraction (XRD) which demonstrated that main single-stage hydroxyapatite was a definitive item during this processing response. Other portrayal techniques utilized were filtering microscopy (SEM), transmission microscopy (TEM) and molecule size investigation. Portrayal by SEM and TEM showed that the morphologies of the hydroxyapatite particles are slender formed and in this manner the sizes are snared in to the progressions inside the boundaries used in the mechanical enactment processing process.

The article provides a classification, compilation and solution methods of descriptive mathematical problems in secondary schools, and also shows the role of an illustrative issue in the development of logical thinking and spatial imagination of students. With the help of illustrative issues, the stages of solving geometric problems have been improved, and the possibilities of effective use of illustrative issues in the process of mathematical education have been clarified.

The article notes that a suspended planner has been developed, equipped with a device that creates a soft layer of soil on the surface of the field. The leveler is designed with a central section and a side section that are pivotally connected to each other. The side sections are transferred from the working position to the transport position and from the transport position to the working position with the help of hydraulic cylinders. All sections consist of front and rear transverse and longitudinal braces connecting them to each other. The front cross brushes of the sections are equipped with leveling working bodies, and the rear cross brushes are equipped with compacting working bodies. Devices are installed on the rear crossbars of the sections, creating a layer of loose soil on the field surface. They consist of two rows of transverse beams equipped with teeth and are pivotally attached to the rear braces of the sections. To ensure the same depth of processing of the tool, its angular vibrations in the longitudinal vertical plane were studied. The results obtained show that for given operating conditions, the processing depth of the device is uniform at the level of requirements based on the correct selection of the thickness of its pressure spring.

The article analyzes the problems of using thickening polymer compositions in the textile industry for stuffing cotton fabric with active dyes. Particular attention is paid to the determination of the structural and mechanical properties of thickening polymer systems. The physico-mechanical and color properties of printed fabrics printed with active dyes are determined. And also the influence of various factors on the physicochemical properties of polymer systems based on starch, Na-СMC and sericin was studied and the optimal compositions of the components that make up the thickeners were determined.

The article deals with the construction of saline regions of the Republic of Uzbekistan.

Cadmium telluride films are grown on single-crystal silicon substrates by vacuum deposition in a quasi-closed volume. CdTe films were studied by atomic force and scanning electron microscopy.