ABOUT MINKOVSKI DIFFERENCE AND SUM OF OPEN AND CLOSED SETS
This article explores the properties of the geometric difference and the Minkowski sum over the sets that are used in the study of differential games, and also outlines ways to overcome the peculiar difficulties in the calculation. The considered examples are presented for sets in the plane. Some...

Actual problems of Mathematics, Physics and Mecanics / 2020 / August

Mamatov Mashrabjon Shaxabutdinovich, Nuritdinov Jalolxon Тursunboy ugli

Volume 4 | Issue 4

3 August 2020, 13:05

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USE OF STATISTICAL METHODS IN THE ANALYSIS OF LAND COVER CHANGE
The article explains the concept and essence of land cover. And the land cover changes from 1995-2015 were analyzed on the example of Uzbekistan and the continents, and conclusions are drawn. The Land cover map data provided in the article were taken from www.diva-gis.org and reworked in ArcGIS...

2020 / August

Jaksibaev Rashid Nietalievich, Aleuov Aydos Sabirovich

Volume 4 | Issue 4

3 August 2020, 13:05

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AN OBTAINMENT OF SINGLE-ATOMIC UNCERTAIN ALCOHOLS ON THE BASE OF ACETHYLENE AND PHENYL ACETHYLENE AND THEIR BROMINATION
Acetylene alcohols and phenyl acetylene allow synthesizing the necessary substances for the chemical industry - synthetic polymers, pharmacological preparations, agricultural pesticides, defoliants, plant stimulants. We investigated the synthesis of tertiary alcohols on the base of acetylene and...

Actual problems of Natural Sciences / 2020 / August

Kultaev Kuzibay Kazakbayevich, Turgunov Erkhan

Volume 4 | Issue 4

3 August 2020, 13:05

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ADSORPTION ETHANOL IN H3,25ZSM-5 ZEOLITE
Differential heats and isotherms of ethanol adsorption in a zeolite H3,25ZSM-5 have been measured by Tian-Calvet-type microcalorimeter and volumetric system at 303 K. Based on the data obtained, the mechanism of ethanol adsorption and (C2H5O)n/Н+ complexes formation in the zeolitic matrix of...

Actual problems of Natural Sciences / 2020 / August

Yuldosh Yakubov

Volume 4 | Issue 4

3 August 2020, 13:05

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BIOGEOGRAPHY SCUTELLARIA ADENOSTEGIA BRIQ. (LAMIACEAE)
The article provides a brief overview of large-scale studies of species of the genus Scutellaria L., discussion about the need for targeted studies of species of the genus found in the Ferghana Valley, including the distribution of the species Scutellaria adenostegiya Briq in the botanical and...

Actual problems of Natural Sciences / 2020 / August

Akbarova Muhayyo Husanovna, Zhuraev Zukhuridin Nazhmidin oglu

Volume 4 | Issue 4

3 August 2020, 13:05

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INFLUENCE OF THE FERTILIZER STANDARDS, TIMING OF PLANTING, THICKNESS OF SEEDLINGS ON THE YIELD OF A PUMPKIN SORT “ISPANSKAYA-73” IN THE CONDITIONS OF KHOREZM REGION
The influence of fertilizer standards on the yield of the pumpkin sort “Ispanskaya-73” was studied. The study was conducted under the conditions that fertilizer standards were N-150; P-100; K-90 kg, N-200; P-140; the thickness of seedlings was 220x100x1, 220x80x1, 220x70x1, and the timing of...

Actual problems of Natural Sciences / 2020 / August

Jumaniyazova Navbahor

Volume 4 | Issue 4

3 August 2020, 13:05

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INFLUENCE OF AMMONIUM SULPHATE IN THE GRANULOMETRIC COMPOSITION OF AZOSUPERPHOSPHATE
This information sets out the results for improving the granulometric composition of azosuperphosphate. Investigated on the marketability finished product and the influence of the norm and method of conducting ammonium sulfate. The granules of activated nitrogen-phosphorus fertilizers have...

Actual problems of Natural Sciences / 2020 / August

Аtashev Elyor Atashevich, Таdjiev Sayfitdin Mukhitdinovich, Jumaniyazov Maxsud Jabbiyevich

Volume 4 | Issue 4

3 August 2020, 13:05

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EFFECT OF VARIOUS SALINITY CONCENTRATIONS ON EMERGENCE OF SORGHUM SPECIES.
Salt tolerant crops are more profitable in irrigated agriculture of Uzbekistan. To study effect of various salt concentrations on emergence of sorghum species laboratory experiment conducted and results was analyzed. With the increasing salinity concentration seed emergence, leaf and root number...

Actual problems of Natural Sciences / 2020 / August

Djumaniyazova Yulduzoy Abdusharipovna, Latipova Ro’zajon Shavkatovna

Volume 4 | Issue 4

3 August 2020, 13:04

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RESULTS OF SCIENTIFIC RESEARCH AND ARCHAEOLOGICAL RESEARCH IN THE ANCIENT KHOREZM
This article deals with some aspects of the history of ancient Khorezm culture. Archaeological sites in the area also focus on archaeological findings, primitive religious beliefs, and their surviving appearance....

Actual problems of history, philosophy and sociology / 2020 / August

Allanazarov Sirojbek Bekchan ugli

Volume 4 | Issue 4

3 August 2020, 13:04

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IMPACT OF THE COVID-19 PANDEMIC ON MIGRATION ETHICS IN UZBEKISTAN: AN INITIAL ANALYSIS
This article analyzes the social and moral problems in the lives of migrants who are citizens of the Republic of Uzbekistan in connection with the COVID-19 pandemic, the ongoing work in our country to improve the situation of migrants and the moral essence, moral consequences of these works. The...

Actual problems of history, philosophy and sociology / 2020 / August

Alimov Sardor Komil ugli

Volume 4 | Issue 4

3 August 2020, 13:04

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