Actual problems of Mathematics, Physics and Mecanics
Actual problems in modern technical sciences
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Actual problems of Natural Sciences
THE ECOLOGICAL IMPORTANCE OF THE DEVELOPMENT OF UNDERGROUND PARTS OF EUPHRATES POPLAR (POPULUS EUPHRATICA OLIVIER).
This article studies the width, depth and development of the root part of the Euphrates poplar (Populus euphratica olivier), which grows in the Lower Amu Darya territory....
3 February 2021, 23:02
KURBANOV`S MINE STUDIES ON THE EXTRACTION OF CERAMIC PAVING STONES WITH HIGH STRENGTH AND CHEMICALLY STABLE ON THE BASIS OF LYOSSLIME ROCKS AND GLASS WASTES
In the process of obtaining high-quality ceramic paving stones due to the mechanical activation of a ceramic mass consisting of loess-like rock and cullet, an acceptable parameter of the ratio of loess-like rock: glass waste is 80:20. To improve the quality of the product, the density of the...
4 January 2021, 03:07
FORMS OF EXISTENCE OF WILD RELATIVES OF CULTIVATED PLANTS IN THE FLORA OF KARAKALPAKSTAN AND KHOREZM
The article provides data on the studies of the forms of existence of wild relatives of cultivated plants of the flora of Karakalpakstan and Khorezm. The analysis showed that among the wild-growing species, the largest number of species was observed among those growing both in the wild and in...
3 January 2021, 03:06
PROSPECTS FOR USING THE GENE POOL OF WILD RELATIVES OF CULTIVATED PLANTS OF THE KARAKALPAK USTYURT FLORA
An inventory of forage, food, medicinal and melliferous plants of the flora of the Karakalpak part of the Ustyurt plateau has been carried out. The flora of the Karakalpak part of the Ustyurt plateau contains many valuable plant species for human use. As a result, on the territory of the Karakalpak...
3 January 2021, 03:06
NEW IMIDAZOLE DERIVATE BASED CORROSION INHIBITOR FOR N80 STEEL IN THE 0.5 M H2SO4: ELECTROCHEMICAL ANALYSES
The corrosion of N80 steel is important task in the chemical industry. The corrosion inhibitor was effectively way to protect the metal material from the corrosion attacks. In the present work, the new imidazole derivate was introduced for mild steel. The...
4 December 2020, 23:19
PHENOLOGICAL OBSERVATIONS IN AVAILABLE TREES IN KARAKALPAKSTAN
This article presents the results of a study conducted to determine the timing of seasonal events in the life of trees and shrubs used in the landscaping of the city of Nukus. These processes are closely related to the natural climatic conditions of the region. The research was carried out on...
3 December 2020, 23:18
SEED PRODUCTIVITY OF HYSSOPUS OFFICINALIS L. UNDER THE CONDITIONS OF KARSHI
The article deals with the results of studying the seed productivity of Hyssopus officinalis L. in the conditions of Karshi. To study the yield of H.officinalis L. seeds, plants in the generative phase were selected and the number of inflorescences per plant, the number of flowers per inflorescence...
3 December 2020, 23:18
STUDY OF THE REACTION OF PRODUCTS OF NCHLOROACETYLATION OF ISOMERIC AMINOPHENOLS WITH PSEUDOEPHEDRINE
The article presents the results of the reaction of the products of Nchloroacetylation of isomeric aminophenols with the alcoloid pseudoephedrine. The factors influencing the course of the reaction have been investigated....
3 December 2020, 23:18
SYNTHESIS OF AMINOCOMPOUNDS AND OBTAINE ON THEIR BASE OF SOME BIOLOGICALLY ACTIVE COMPOUNDS
In the article formation of aminoalcohols and aminocompounds by Mannich reaction from acetylenic alcohols and phenylacetylene and also biological activity of halogenated derivatives of the synthesized aminocompounds have been inves -tigated. Acetylenic alcohols were synthesized by the reaction A.E....
3 December 2020, 23:18
MONOAMINES AND DIAMINES CONTAINING ACETYLENE GROUPS AND THEIR REACTIONS WITH HALOGENS.
In this work the synthesis of monoamines on the base of acetylene aminoalcohols and diamines in the presence of acetylene, paraform and secondary amines by the Mannich reaction.was inivestigated. The structure, physico-chemical culconstants and conditions of formation of synthesized monoamines and...
3 December 2020, 23:18