Production Tests of the Developed Experimental Sample of Cotton Regenerator for Extraction of Volatles from Cleaner Waste

The article describes the results of production studies of the developed cotton regenerator for the extraction of flakes from the waste of cotton cleaners with an improved rod drum in the production conditions of a cotton gin plant. Comparative indicators of the quality of cotton regenerators were obtained, the developed regenerator was introduced into production

Hydrogels Based on Rice Starch, Acrylic - and N, N'-Methylenbi Sacrylamide, Metacrylamides and Their Use in Agriculture

Hydrogels containing soil and atmospheric moisture with hydrogel characteristics were synthesized by polymerizing polymers with acrylamide and methacrylamide, N,N-methylene-bis-acrylamide, and their physical and chemical properties were studied. The effects of temperature, the amount of oxidizing agent - N,N-methylene-bis-acrylamide in the reaction mixture, initiator concentration, and various solvents (water, ethyl alcohol, etc.) on the solubility of the obtained polymers in water were studied. The synthesized spatially structured polymers have been studied to form highly swelling hydrogels depending on the reaction conditions. Based on the samples obtained as a result of the research, the scientific basis for obtaining hydrogels that absorb moisture from the soil and atmosphere at a high level was developed. By modifying polymers with natural compounds, the possibility of obtaining hydrogels with a positive effect on the growth of cultivated plants in agriculture was investigated

Contemporary climate change problems in Central Asia

According to the moderate climate change scenario, the direct impact of climate change on irrigated crops, including cotton, wheat, apples, tomatoes, and potatoes, is pro-jected to decrease the yields by 1–13% by 2050. However, the demand for food is expected to increase overall due to the population growth and poverty reduction goals. The rate of climate change in the countries varies. The highest decadal rates of climate change were recorded in Uzbekistan at 0.29°C (1950-2005) and in Kazakhstan at 0.26°C (1936-2005). The climate change rate in Kyrgyzstan and Tajikistan were 0.08°C and 0.10°C, respectively. In these upstream countries, the area of forests and mountain ranges is relatively large, and the possible negative impact of climatic factors is relatively small. Thus, the contemporary problems in Central Asia in the context of climate change are related to a growing scarcity of water resources; uneven distribution of water resources across the countries in relation to the needs; relatively low water use efficiency (especially in agriculture); relatively high population growth rates and intensification of economic processes. If additional resource-saving measures are not taken, the negative consequences of climate change in the region may include an increased risk of water shortages, droughts, and other dangerous hydrome-teorological events that lead to instability of agricultural production and threaten food secu-rity; and particularly the shrinkage of glaciers and therewith one of the key sources of freshwater. Overall, a strategy of action plans on climate change nationally and region-wide is urgently needed, including both adaptation and mitigation measures

Evaluation of the quality indicators of collector-drainage water for reusing purposes: a study from Sirdarya province, Uzbekistan

Currently, in the countries of the Aral Sea basin, due to the negative effects of climate change and the unreasonable use of water resources, the reduction and pollution of existing water resources, the increase in demand for water and its protection are required. Due to the increase in the amount of mineralization due to the discharge of the mineralized collector-drainage waters formed in the irrigated areas to the rivers, their use is limited due to the pollution of the upper and lower streams of the river basins. Researches revealed that the mineralization of Central Mirzachol drainage water has increased by 3.5 times, the total hardness has increased by 4 times, the amount of cation and anion and heavy metals is also high. It was found that the quality of the water of the Central Mirzachol drainage is the worst, and the water of the Boyovut well has a relatively good quality indicator. As a result of the discharge of collector-drainage waters to the Syr Darya River, the main water source of the province, the total hardness of the river reaches 2.0 times, the mineralization is 1.2 times, the amount of cations potassium, sodium, calcium and magnesium, the amount of sulfates and chlorides from anions, heavy metals: manganese, caused the amount of zinc, tin, copper to exceed the permitted standards

Negative outcomes of staged parathyroidectomy using percutaneous laser ablation

The article gives information about negative outcomes of staged parathyroidectomy using percutaneous laser ablation

Soil Salinity Variations and Associated Implications for Agriculture and Land Resources Development Using Remote Sensing Datasets in Central Asia

Global agricultural lands are becoming saline because of human activities that have affected crop production and food security worldwide. In this study, the spatiotemporal variability of soil electrical conductivity (EC) in Central Asia was evaluated based on high-resolution multi-year predicted soil EC data, Moderate Resolution Imaging Spectroradiometer (MODIS) land cover product, precipitation, reference evapotranspiration, population count, and soil moisture datasets. We primarily detected pixel-based soil EC trends over the past three decades and correlated soil EC with potential deriving factors. The results showed an overall increase in salt-affected areas between 1990 and 2018 for different land cover types. The soil EC trend increased by 6.86% (p < 0.05) over Central Asia during 1990–2018. The open shrub lands dominated by woody perennials experienced the highest increasing soil salinity trend, particularly in Uzbekistan and Turkmenistan local areas, while there was a decreasing soil EC trend in the cropland areas, such as in Bukhara and Khorezm (Uzbekistan). The main factors that affect the variability of soil salinity were strongly associated with population pressure and evapotranspiration. This study provides comprehensive soil EC variations and trends from the local to regional scales. Agriculture and land resource managers must tackle the rising land degradation concerns caused by the changing climate in arid lands and utilise geoinformatics

Economic assessment of the state of development of small business in the field of agriculture.

In the article, the organizational and economic foundations of small business and private business entities operating in agriculture. Their economic situation and state support mechanisms are covered. Also, the role of small business entities in the production of agricultural products and the growing role of the consumer market are given. &nbsp

Contemporary climate change problems in Central Asia

According to the moderate climate change scenario, the direct impact of climate change on irrigated crops, including cotton, wheat, apples, tomatoes, and potatoes, is pro-jected to decrease the yields by 1–13% by 2050. However, the demand for food is expected to increase overall due to the population growth and poverty reduction goals. The rate of climate change in the countries varies. The highest decadal rates of climate change were recorded in Uzbekistan at 0.29°C (1950-2005) and in Kazakhstan at 0.26°C (1936-2005). The climate change rate in Kyrgyzstan and Tajikistan were 0.08°C and 0.10°C, respectively. In these upstream countries, the area of forests and mountain ranges is relatively large, and the possible negative impact of climatic factors is relatively small. Thus, the contemporary problems in Central Asia in the context of climate change are related to a growing scarcity of water resources; uneven distribution of water resources across the countries in relation to the needs; relatively low water use efficiency (especially in agriculture); relatively high population growth rates and intensification of economic processes. If additional resource-saving measures are not taken, the negative consequences of climate change in the region may include an increased risk of water shortages, droughts, and other dangerous hydrome-teorological events that lead to instability of agricultural production and threaten food secu-rity; and particularly the shrinkage of glaciers and therewith one of the key sources of freshwater. Overall, a strategy of action plans on climate change nationally and region-wide is urgently needed, including both adaptation and mitigation measures