OAK jurnallaridan yig‘ilgan 129907 ta ilmiy maqola: sarlavha, mualliflar, annotatsiya, kalit so‘zlar, DOI va tayyor iqtibos formatlari.
The technology of processing of natural dolomite to magnesium nitrate solution form is developed. It is shown that the nitric acid solution of dolomite after complete or partial removal of calcium ions can be used as…
The results of investigations on the ammonization with nitric acid extract of kaolin clays from the Angrene deposit, calcined at 650-700 °C are presented. It is shown that phase aluminum it is absent from the liquido at…
By the reaction of 1-aminoanthaquinone and 2-aminoanthraquinone with phenylisothiocyanate, halogen-, nitrobenzoylisothiocyanates in dimethylformamide by heating at 90 ˚C for 5 hours, the corresponding derivatives – 1,3…
In the article the results of the modification of stiff polyurethane foam with hydroxyl containing ammonium oligomers have been presented. The influence of duration of synthesis and concentration of…
The technology of extraction of cotton cake by the influence of a pulsed electric field on the extracted mass is researched. The dependence of the specific conductivity on the inverse temperature using the influence of…
The reactions of the preparation of α- (phenyl-azo) -allyl ester of β-naphthol, by the interaction of aniline with β-naphthol, and its alkylation with allyl chloride, the mechanism, and also the use as a pigment are…
The structure of glasses synthesized in the R2O-RO-CaF2-P2O5-Al2O3-SiO2 system was studied by scanning electron microscopy. Glasses have a complex heterogeneous structure associated with the formation of germinal or…
In this work, bioactive alkali free glass was synthesized in the RO-CaF2-P2O5-Al2O3-SiO2 system and the results of crystallization of glass in the temperature range 700-1000 °C were investigated. The glass…
On the basis of distilled fatty acids, their nitriles were synthesized and hydrogenated by hydrogen at 5,472- 5,674 МPa pressure was converted to primary aliphatic amines with a purity of 98%.
The Infra-Red Drying Process has been developed in the form of the equation of the first order in the form of a mathematical model. It is established that the use of infrared radiation together with convective drying in…
The synthesis of mixed amid of complexed compounds ofmagnium nitrate with formamide, carbamide and tiocarbamide was performed in this study. The composition, individual as well as methods of formamide, carbamide…
The synthesis of benzamide coordination compounds of magnesium nicotinate by a mechanochemical method was carried out. The optimal component ratios and the time of the reactions were established. The composition of the…
The sorption and complex-forming properties of PAD600-based impregnated sorbents with respect to the Pt (II) ion were studied. The parameters of sorption extraction of platinum ions are determined. It was found that…
The influence of the nature of aldehydes of the structure of the products of their interaction with diethanolamine was studied. It was found that the interaction of one mole of diethanolamine with one mole of aldehyde…
The paper presents the results of a study on the production of vinyl acetate in a heterogeneous-catalytic manner in the presence of catalysts of zinc acetate/γ -Al2O3, zinc acetate/activated carbon, PHA, PHA-6, in the…
The description of a pilot plant and results of a research of intensity of a heat mass transfer are provided and hy-draulic resistance at various initial concentration of the absorbed gas and relations of an expense of…
The conditions of selective extraction of the bismuth (III) by inert organic solvents in the presence of DMFA are established. The conditions for complex formation of the bismuth (III) with the PAN directly in the…
We investigated the protein extract of silkworm larvae. For the first time, an extract containing proteins from silkworm larvae, obtained by fractional precipitation using ammonium sulfate, was studied. As a result of…
The article presents the results of the study of adsorbents obtained from rice husk. To increase the sorption capacity of the raw material is treated with hydrogen peroxide for 30 minutes and subjected to roasting…
The results of the development of the technology of the combined external drug for the treatment of allergies compli-cated by fungal infection are given. The rheological properties of the gel composition were studied in…
In the article the results of synthesis of the reticulated high molecular connection are rotined on the basis of 1-khlor-3-piperidin-2-propilakrilata, his structure and properties. Influence of different factors is…
The article discusses natural clay as a raw material for drilling fluids of the oil and gas industry of the Republic of Uzbekistan. Studied compositions of clays from the Akoy and Navbakhor area (the Republic of…
The new filter-material based on waste of textile industry (WTI) for filtering diacetate cellulose (DС) solution has been developed. Alkaline cooking, hypochlorite and peroxide bleaching of WTI were carried out and…
For the first time, the amino acid composition of the seed oat fruit harvested in the Republic of Uzbekistan was stud-ied. Chromatographic detection of amino acids was performed by the method of ascending…
In the following article the developed new thickener are studied based on hydrolyzed acrylic emulsion (HAE), uzchitan and carboxymethyl starch for printing mixed fabrics cotton-silk. Investigated coloristic property…
The article discusses use of the insect cell cultures for biotechnological purposes. Optimal conditions for the cultiva-tion of Spodoptera exigua and Lymantria dispar cell lines were selected.
The synthesis of pyridine bases based on primary, secondary and tertiary acetylenic alcohols and ammonia in the presence of catalysts of the TSFXA series was studied. It was determined that the selective catalyst for…
The dependence of the polarization resistance on time in salt, acidic and aqueous media of coatings based on epoxy binder filled with kaolin AKF–78, AKS–30, AKT–10 was studied. It has been established that compositions…
As a result of studies, the effect of modified Angren kaolin on the properties of elastomeric compositions based on synthetic polyisoprene and oil-filled styrene-butadiene rubbers were revealed. Plastoelastic and…
The reaction of obtaining the copper-zinc complex of HEDP in the presence of glycerol and EPA was studied in various ratios of the initial reagents. The dependences between effectiveness of inhibiting and ratio of Cu…
The chemical and mineralogical composition of the clay slate of the Dzherdanak deposit is determined. Four species were investigated in the natural and heat-treated state in the range of 800-1400 °C using the X-ray…
Synthesis of new biologically-active acetylene alcohols containing in composition of their molecules aromatical, cyclical and hydroxyl-groups and also triple bond by reaction of enantioselective alkylation of some…
By polymerization of melamine and furfural in the presence of diphenylamine there was obtained new weakly basic anion exchanger. There was investigated the basic physicochemical properties of anion exchanger. With the…
The purpose of the work is to study the technological features of the deodorization of local soybean oil. Deodorization of soybean oil was carried out in laboratory and pilot plants, to analyze the composition of the…
The results of studies of the effect of fillers from branch kaolins of various grades on the performance properties of composite polymer materials are presented. Optimum amounts of fillers in the composite polymer…
The purpose of the study is to obtain superconducting phases with Ts ≥ 260 K. The advanced “Solar Fast Alloys Quenching-T” technology obtained nanoscale precursors and ceramics of nominal composition Bi1.7Pb0.3 Sr2…
The results of research on the use and return technogenic microsilica into the process of producing silicon metal and ferrosilicon are presented. The chemical composition and granulometric structure, physical and…
In this article the alcoholysis process conditions of secondary polyethylene terephthalate with the mixture of polyhydric alcohols have been investigated. This study has found that the aggregative state of the products…
The influence of the glass and basalt fibers on the thermal properties of polypropylene was studied. It is estimated the effect type of concentration of fillers on the thermal properties of base polypropylene.
It is established that in the process of grinding the kernel of cotton seeds, a partial destruction of globules and spheroids of oil occurs before rolling them. At the same time, the greatest damage is observed during…
The article proposes the models and analytical dependences for assessing the impact interactions of the surface layers of the material of the ridges of tyres with the rail parts in curved track sections and turnouts on…
The article reviews the state-of-the-art of the Higher Educational Institutions in the Republic of Uzbekistan, drawbacks directly related and not related to the Higher Educational Institutions and ways of dealing with…
The article, based on the scientific approach, attempts to justify the interconnection and interdependence of pricing mechanisms in various financial market segments. The fact that the market relations are developed in…
The paper examines the determinants of exchange rate fluctuations of Uzbek sum using three econometric models as OLS (Ordinary Least Squares), ARIMA (Autoregressive Integrated Moving Average) and MLARCH (Multivariate…
The article discusses current and strategic issues of attracting young people to entrepreneurial activity in the process of forming a state youth policy. It deals with the problems associated with increasing…
The socio-economic development of the country, sustainable economic growth, income growth and improvement of living conditions depend on the investment volume and activity. Developing countries adopt policies aimed at…
The issues of enhancing the competitiveness of the domestic securities market are the most important components of the problem of enhancing the competitiveness of the national economy. The research of factors for…
The article is devoted to the assessment of the state of the ontogenetic structure of some rare endemic species – Lepidolopha nuratavica Krasch and Cousinia dshisakensis Kult, growing on the Aktau ridge (Navoi region)…
The most common grape disease in Uzbekistan is mildew. The article shows the effectiveness of the new fungicide Banjo Forte 40% k.s. against mildew of grapes. It provides data on the high biological effectiveness of the…