“Modeling of discharges of collector waters into the watercourse of the Ferghana Valley” The process of discharges for a watercourse is considered, starting from a certain distance from the inlet, a concentrated liquid over the entire cross section of the channel experiences a retarding action of viscosity forces, a change in the concentration of the liquid occurs, both along the cross section and along the length of the channel . In the following, the main attention will be paid to the consideration of the flow and the change in concentration in a channel with a circular cross section that is constant along the length. There are no internal sources in the main channel. The value of the concentration coefficient and analytical calculation are given.
13.11.2022 Volume 1 Issue 7 View more Download
Surface irrigation technology, especially furrow irrigation, is the main method of irrigation in the arid zone. However, traditional methods of furrow irrigation have significant drawbacks, primarily in the uniformity of soil moisture along the length of the furrow. Despite improvements in the scientific foundations of irrigation technology, many other aspects of this scientific problem remain unresolved. One of them is the determination of the infiltration characteristics of irrigation under various irrigation regimes and the properties of soils.
13.11.2022 Volume 1 Issue 7 View more Download
When solving many problematic management problems in information systems, a large number of documents are transmitted for processing, and in dozens of copies that are generated in databases. For example, in the personnel management system of industrial enterprises of small and medium-sized businesses of the Sirdarya regional khokimiyat, there are more than 15 thousand managers who have personnel accounting cards and additional forms related to their activities.
13.11.2022 Volume 1 Issue 7 View more Download
The aim of the study is to study the effect of oil refining waste on the properties of elastomeric composite materials. It was found that in its presence in a thiuram curing system, the relative rate of cis-1,4-polyisoprene vulcanization increases, the time to reach the optimum vulcanization decreases, but the degree of vulcanization, proportional to the maximum torque, decreases, and when a sulfur vulcanizing system is used, it activates the vulcanization process, which is facilitated by the presence of active functional groups in its composition (-ОН, -СООН and etc). It is shown that the tensile strength and elongation of vulcanizates increase, while the elasticity remains at an average level.
13.11.2022 Volume 1 Issue 7 View more Download
In designing of clothes for pregnant women important factor is the account of features of anthropometric data changes, depending on the period of pregnancy. Clothes for pregnant women should have a rational constructive solution taking into account properties of used polimeric materials.
13.11.2022 Volume 1 Issue 7 View more Download
This article is devoted to increasing the efficiency of solar-water collectors that heat water using solar energy. Light-absorbing elements of solar-water collectors have been proposed, constructive schemes have been developed. Based on the developed constructive scheme, the mode of operation of the solar-water collector is studied.
13.11.2022 Volume 1 Issue 7 View more Download
In this article, the advantage of using membrane ultrafiltration devices in the decontamination of drinking water and the high efficiency that can be achieved are highlighted. Today, when the importance of providing the population with clean and high-quality drinking water is increasing, it is necessary to use energy-saving and high-efficiency technologies in the decontamination of drinking water. use in water supply systems remains the most appropriate measure.
13.11.2022 Volume 1 Issue 7 View more Download
SCIENCE & INNOVATION