Actual problems of Mathematics, Physics and Mecanics
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Actual problems of Natural Sciences
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
COMPARISON ASTER, SRTM AND GOOGLE DEM WITH GROUND DATA IN A SMALL-SCALE AGRICULTURAL LAND
The aim of this study is to compare open-source DEM data with ground data in order to assess the accuracy and identify their possibility of usage for agricultural activities. The accuracy assessment was checked through ground data taken from 2100 m sq. agricultural field that is being used for...
3 October 2020, 14:04
COMPLEX COMPOUNDS OF COPPER (II) FORMIATE WITH ACETAMIDE AND NICOTINAMIDE
The article presents data on the synthesis and study of previously non-described complex compounds of copper formate with acetamide and nicotinamide. It was shown by IR spectroscopy that in the structure of the complexes, the coordination of acetamide occurs through oxygen atom, and nicotinamide,...
3 October 2020, 14:04
SOME RESULTS OF ENGINEERING AND GEOLOGICAL STUDIES ON DESIGNING SITES FOR MUNICIPAL SOLID WASTE LANDFILLS IN THE KHOREZM REGION OF THE REPUBLIC OF UZBEKISTAN
On the basis of the engineering surveys carried out in the territory of Khorezm region, the necessary data was obtained on the engineering and geological conditions of the sites for the design of two municipal solid waste landfills and the protection of the environment against natural and man-made...
3 October 2020, 14:04
SENOPOPULATIONS OF SCUTELLARIA COMOSA JUZ (LAMIACEAE) IN THE FERGANA REGION
Ontomorphogenesis and the ontogenetic structure of cenopopulations of Scutellaria comosa have been studied under natural conditions. A brief ecological and phytocenotic characteristic of its habitats is given. Ontogenesis of Scutellaria comosa is simple, incomplete, senile individuals are absent....
3 October 2020, 14:04
SYNTHESIS AND ANALYSIS OF COORDINATION COMPOUNDS OF NICKEL (II) ACETATE WITH MONOETHANOLAMINE AND P-NITROBENZOIC ACID
This article clarifies the synthesis of a complex combination of pnitrobenzoic acid with Ni2+ from aromatic carbonic acid derivatives. Moreover, factors influencing the synthesis of the complex compound under room conditions were identified. In particular, the time dependence of the reaction, the...
3 October 2020, 14:04
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...
3 August 2020, 13:05