Zayniddin Sharipov’s research while affiliated with Tashkent State Agrarian University and other places

The article is devoted to developing measures to combat soil erosion of lands susceptible to degradation and desertification. These measures are aimed at accelerating environmental management processes and improving ecology through the implementation of new promising technologies and technical means into agricultural production. A combined sowing unit was developed that in one pass prepares the soil for sowing and sows seeds. A unit for mechanical destruction of the seed dome was developed. A technological scheme for the process of sowing saxaul seeds was proposed. Technical specifications for the sowing unit were also developed.

The article discusses molecular changes in the working mixture based on the composition of the biofuel blend. Theoretical calculations on the variations in heat release rates and fuel particle velocities reveal differing increases in heat utilization efficiency across various flow sections during atomization at different time intervals. The movement conditions of particles within the combustion chamber vary, particularly in fuels with multicomponent mixtures. Notably, a significant number of droplets (up to 20 million) of varying sizes are observed. Under these circumstances, abrupt spraying speeds are not recommended as they lead to fuel accumulation around the burner, hindering the combustion process. Furthermore, the article introduces analytical relationships aimed at promoting turbulence in flows of diverse fuels within the combustion chamber through the intensive mixing and throttling of fuel mixtures with varying compositions.

Research and development activities aimed at the development of new scientific and technical bases of resource-saving technologies and mixed fuel preparation devices, which implement the use of alternative fuels to save traditional fuels, are being carried out. On the basis of theoretical and experimental studies, the initial requirements and technical conditions of the device for heating the bioethanol mixture to the diesel fuel and the engine supply system was tested. The fuel mixture prepared by heating the recommended diesel fuel and bioethanol proportioned mixture was tested on the TTZ 80.10 tractor. The tests showed that the specified injection angle of the UTN-5 fuel pump was advanced by 2 degrees, and the injector needle pressure was determined to be 1.4-1.6 MPa.

The article provides information on large degraded areas in almost all areas, of which 17.5 million hectares of dry natural pastures are allocated for cattle breeding out of 32 million hectares of desert and semi-desert areas in Uzbekistan. It is also noted that 40% of desert and semi-desert pastures have degraded pastures to varying degrees, the average productivity has decreased by 20-30%, and 8.0 million degraded pastures should be improved first. To improve the condition of degraded desert and semi-desert pastures, the authors noted that it is possible to increase their productivity by 10-15 times due to the establishment of cultural pastures by replanting nutritious wild plants and comparing their productivity. To improve the productivity and ecological restoration of degraded livestock pastures in our Republic's desert and semi-desert areas, he considered the mechanization of planting saxovul and cherkez plants from nutritious shrubs and developing a planting unit for this purpose. For this purpose, the devices used in planting the seeds of plants with the same physical and mechanical properties as the desert plants from the seeds of nutritious plants growing naturally in the wild in our Republic and foreign countries and their shortcomings have been determined.

Computing increases the flexibility and access of educational users to a wide range of educational resources. This includes access to infrastructure, software, hardware, and platform at any time in any place provided there is internet access. Current research trends on cloud computing have sought to study the acceptance or adoption of technology; however, little research has been devoted to the continuance use in an organizational setting. To address this gap, this study aims to investigate the antecedents of cloud computing continuance use in HEIs. The collective nature of all these entities is known as the Cloud. While respondents from all types and sizes of institutions showed some similarities in their perceptions of the cloud and cloud usage, there are some notable differences that are highlighted in the key findings. This paper also aims to identify the benefits and limitations of SaaS in higher educational institutions, closes with a discussion of the research limitations, contribution, and future directions

The article presents the analysis results on the study of physical-mechanical properties of soils in Uzbekistan and experimental studies on the influence of parameters and rational geometric shape of working tools on the quality of soil tillage while reducing energy costs. It has been established that soil moisture and hardness in the periods of basic and pre-sowing tillage differ significantly according to weather conditions, agrophonous background, and sowing and harvesting technology of agricultural crops. The peculiarities of different soils and the main directions of preserving and increasing their fertility are considered. The problems of optimization of physical properties and issues of the fertility state of irrigated soils are highlighted. Special attention is paid to the problems of improving soil's basic physical and mechanical properties. The use of effective technologies for improving and ameliorating irrigated lands, increasing fertility, and reducing and preventing soil salinization is proposed. For prevention of decrease and preservation of soil fertility, purposeful measures on improvement of physical properties of soils are recommended, the mechanism of which solution is the application of innovative technology of processing providing purposeful growth and development of root system, moderate moisture of soil, increased water permeability, moisture stocks, and reduction of salinization. To prevent intensive moisture evaporation after deep tillage, it is recommended to carry out agrophobic treatment by maximum leveling and creating a shallow crumbly surface layer. To substantiate the parameters of the deep loosener were based on the fact that the degree and magnitude of soil deformation depend on both the shape and parameters of interacting working bodies and on the physical and mechanical properties of the cultivated medium.

The article discusses a method for planting seeds in stony soil and a device for its implementation. It has been established that the quality of seed placement in the soil significantly depends on the quality of formation of the earthy soil layer at a depth of seed placement. A method is proposed for planting seeds in stony soil, which includes cutting off the upper layer of stony soil with its simultaneous separation, formation of stony and fine-grained layers from it and laying them alternately on top of each other, forming grooves, laying seeds on its bottom and falling asleep seeds with soil. In contrast, the depth of cut of the upper layer of stony soil is taken equal to the sum of the depth of seeding and the maximum size of stones. To implement the method, a proposed device includes a frame, a ploughshare mounted on it, and a separating grid made of several parallel wire elements, sowing machines, disc coulters, and fenders. The economic efficiency of the proposed technical solution is associated with maintaining the period of the emergence of seedlings and, accordingly, increasing the yield of crops, as well as increasing the productivity of sowing machines.

The technology of electro-processing by UV-radiation soil of agricultural plants is considered. The mechanism of the effect of UV irradiation to change by redox reactions a chemical potential of the soil is shown. As the result of experimental researches, optimum parameters for processing soils with ultraviolet radiation lamps for increasing the absorption of the most mobile manganese forms in plants are defined.

Existing plows do not provide high-quality tillage between rows of orchards and vineyards. The purpose of the study is to develop and justify the parameters of the plow for cultivating the soil between rows of gardens to tractors of class 0.9 kN. A design scheme of a single-body plow for smooth, rowless plowing of garden aisles has been developed. The proposed plow consists of a movable and fixed frame, a disc knife, a screw body with a hostage. The research uses the laws of agricultural mechanics, mathematical statistics, and methods of strain measurement. The technology of cultivating the soil between rows of gardens with a single-body plow for smooth plowing is justified. To implement the proposed technology, the position of the plow body changes relative to the tractor during operation. It is established that when equipping a plow with a movable and fixed frame and performing a body width of 45-52. 5 cm, the required plowing quality is achieved with the lowest energy consumption.