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In this research, the work was carried out to create and analyze mathematical models of steady technological processes in cotton cleaning, to obtain analytical expressions for the time of cotton and fiber processing and the time of turning raw materials into finished products. In addition, mathematical models for unstable technological processes in cotton cleaning were created and analyzed. Detailed information is provided on the technology of performing these works, the devices used, their operation, their efficiency, and ways to increase their efficiency.

In order to use local and inexpensive raw materials in the production of semiconductor solar photovoltaic cells, scientific research is being conducted. Measurements were carried out on FTO, ITO glasses TiO2 calloid and I iodine crystal. Using the samples, a photocell was prepared under experimental conditions and measurements were made and analyzed for their effective operation.

In this article was given ideas on mathematical modeling of the laws of airborne distribution of dust particles generated in primary cotton processing plants, the laws of airborne distribution of various chemically harmful dust particles, as well as the physical variables of the air environment views on the modeling of dust particle dispersion processes in the working zone, such as stability, air flow rate, numerical values of indicators

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