Actual problems of Mathematics, Physics and Mecanics
Actual problems in modern technical sciences
Actual problems of Natural Sciences
Actual problems of history, philosophy and sociology
Actual problems in modern tourizm and economics
Modern problems of Philology and Linguistics
Actual problems in modern pedogogy and pshychology
Actual problems in modern agriculture
Actual problems in modern art and architecture
Actual problems of Natural Sciences
THE ROLE AND IMPORTANCE OF STATISTICS IN TEACHING ECONOMIC AND SOCIAL GEOGRAPHY
The article describes the role and importance of statistics in the teaching of economic and social geography. It also analyzes research conducted in foreign countries on methods of developing statistical knowledge and skills for students....
3 December 2021, 21:59
MODIFICATION OF THE COMPOSITION OF CERAMIC RESTORATION BRICK TAKING INTO ACCOUNT THE COLOR CHARACTERISTICS OF THE ORIGINAL SAMPLE
The article is devoted to the use of the results of chemical, X-ray phase, optical and scanning-electron-microscopic methods in the study of the physical and chemical properties of raw materials and inorganic wall materials in the monuments of ancient Khiva....
3 November 2021, 21:59
USE OF LAKE WATER FOR AGRICULTURAL PLANNING IN DROUGHT YEARS IN THE CASE OF KHOREZM REGION
The reasons for drought and the impact of agricultural drought to crop production in the Khorezm region are the main content of the article. The possibility of using lakes water to find solutions and to be prepared for the problem reviewed. The lakes were divided into 5 groups according to their...
3 November 2021, 21:59
EFFECTS OF MULCHING ON COTTON PLANT DEVELOPMENT IN SALINE AREAS OF SYRDARYA REGION
It is known that in order to get a good yield in agriculture, it is important to keep the soil moisture at a normal level. Crop residue reduces evaporation, and the soil stays wet and the crop requires less water. Keeping the residues in fields after harvest reduces soil losses, protects the soil...
3 October 2021, 21:58
WAYS AND POSSIBILITIES OF TAKING RUST CLEANING AND INHIBITING MEANS FOR THE CONSTRUCTIVE TYPE OF EQUIPMENT USED IN THE PRODUCTION PROCESS.
Research has been conducted to obtain a new generation of rust cleaning products based on local raw materials and industrial waste. The best result was achieved with the addition of phosphate and citric acids, K2Cr2O7, ZnSO4. The high efficiency of rust removal of the created optimal content...
3 September 2021, 21:58
INHIBITORY AND REGULATORY ACTIVITY OF SOME DERIVATIVES OF 5- EXCHANGED AMINO-1,3,4-THIADIAZOLINE-2-TIONS
The article presents the results of research on the inhibitory and plant growth control properties of some chemical compounds synthesized based on 5- exchanged amino-1,3,4-thiadiazoline-2-tions, among which have inhibitory and regulatory properties (can be used as active compounds) compounds were...
3 August 2021, 21:57
A NEW LOCATION OF FERULA SUMBUL (KAUFFM.) HOOK.F. AND MOSSES IN THE TURKESTAN RIDGE
The Ferula genus includes about 185 species, most of which are distributed in Central Asia. All Ferula are perennial herbaceous plants, some of which are quite large, reaching two meters in height during the flowering period. All Ferula belong to the group of ephemerides. As a result, the species...
3 July 2021, 21:57
SYNTHESIS OF NEW 2-ARYLQUINOLINE AMIDES
Quinoline amides based on 6’-aminodubamine and various aliphatic acids were synthesized. The structure of the synthesized compounds was proved by IR, mass, 1H and 13C NMR spectra. The synthesis of amides was carried out using two different methods....
3 July 2021, 21:56
BIOLOGICAL ACTIVITY OF 5-EXCHANGED AMINO-1,3,4-THIADIAZOL2-TIONS AND THEIR DERIVATES
The article deals with the search for new products of alkylation of 5-morpholino (phenylamino-, p-toluidino-)-1,3,4-thiadiazoline-2-tions with some alkyl halides (allyl bromide, benzyl chloride) and phenoxymethyloxyranes and their potassium salts. The results of the study of plant growth control,...
3 July 2021, 21:56
SORPTION-PHOTOMETRIC DETERMINATION OF LEAD (II) IONS BY IMMOBILIZED SODIUM 4-AMINO-5-HYDROXY-3 - ((E) - (4- NITROPHENYL) DIAZENYL) - 6 - ((E) -PHENYLDIAZENYL) NAPHTHALENE-2,7-DISULFONATE
The article shows the possibility of using sodium 4-amino-5-hydroxy-3 - ((e) - (4-nitrophenyl) diazenyl) - 6 - ((e) -phenyldiazenyl) naphthalene2,7-isulfonate, immobilized on polyacrylonitrile fiber PPD, as a reagent for the determination of lead ions. The optimal conditions for immobilization and...
3 June 2021, 21:55