The article provides information on diseases of plants of melons and gourds of tomato, and cucumber. The analysis was carried out to identify the current state of the problem of infection and morbidity of tomato and cucumber plants with tobacco mosaic viruses (TMV). The positive and negative aspects of existing methods and methods of combating pathogens are described. The structure of the pathogen, the structure of cells in a spiral for the purpose of their destruction and elimination of harmful effects were studied. The description of the use of electric current discharges on the possibility of using TMV for breaking the cell spiral with the aim of destroying them is given.
A review of adsorption mechanisms for heavy metal removal using low cost adsorpthas been carried out in this article. Some metal ion sequestration techniques used over the years have some demerits, ranging from generation of sludge to high operational cost. Adsorption process using low cost adsorbents has been found cost effective and environmentally nuisance-free. In this review, various low cost adsorbents for heavy metal sequestration have been studied. The application of some adsorption models such as single and multi-component isotherms, adsorption thermodynamics, and kinetics as well as the effect of process parameters on heavy metal sequestration using low cost adsorbents has also been reviewed so as to better understand the adsorption process. From the literature reviewed, the percentage removal of chromium, copper and zinc was favoured by an increase in contact time, temperature, initial concentration, adsorbent dosage as well as a decrease in pH.
The analysis of the factors of renewable energy sources (mainly solar ones) integration with the central grid was conducted in the paper. Various problems arising during integration, solved in Uzbekistan through the development and adoption of a modern legislative and regulatory framework were described. Various aspects of solving the problem were considered, including research work intensification in this direction.
In many sectors of the industry, for example in agriculture, many countries find alternative sources of energy as an acceptable and feasible choice, given the high energy requirements on the one hand and the negative environmental effect of fossil fuels, on the other. Sustainable agriculture is a delicate equilibrium to increase crop production and preserve economic stability while reducing the use of scarce natural resources and the negative effects of the environment. The use of renewable energy systems for sustainable agriculture, therefore, needs to be promoted. This paper is a state of art on the numerous update and feasible technologies of renewable energy applications in the agricultural sectors. It also discusses the significance of renewable energy as environmentally clean technologies and the most reliable energy source. This study covers different types of renewable energy sources like solar systems, biomass energy, and hydropower. Such forms of renewables have been proven to be suitable options in agriculture, and in particular for remote rural areas.
This paper presents innovative methods and techniques for the development of small solar power systems in Uzbekistan, based on the properties of patterning and prosumerism, adoption of which would increase the efficiency of power supply. It also provides examples and results of their application in solar systems for remote and agricultural power supply developed by MIR SOLAR LLC, as well as the experience of teaching these innovations to students of Uzbek universities (Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Tashkent State Technical University, and others).
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