Actual problems of Mathematics, Physics and Mecanics
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Actual problems of Natural Sciences
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
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...
3 August 2020, 13:05
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...
3 August 2020, 13:05
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...
3 August 2020, 13:05
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...
3 August 2020, 13:05
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...
3 August 2020, 13:04
GRAIN TRANSPARENCY OF TRITICALE VARIETIES GROWN IN SOIL CLIMATIC CONDITIONS OF KHOREZM REGION
The degree of grain transparency of 11 local and foreign varieties of triticale in the Khorezm region has been studied in the article. It was observed that the degree of transparency of analyzed grains is various even though they are harvested using generally accepted agro technical conditions....
3 June 2020, 01:41
THE CABBAGE BUGS IN THE TERRITORY OF THE AMU DARYA RIVER (Heteroptera, Pentatomidae, Eurydema)
This article deals with the faunistic survey on subgenus Eurydema Laporte de Castelnau, 1833, in the regions of Khorezm and Karakalpakistan. Totally 2 species from the family Pentatomidae were collected and identified. The Central Asia species: Eurydema maracandica Oshanin, 1871 and Eurydema...
3 June 2020, 01:41