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2020

ISSN 2227-6017 (ONLINE), ISSN 2303-9868 (PRINT), DOI: 10.18454/IRJ.2227-6017
ПИ № ФС 77 - 51217, 16+

FREE OSCILLATIONS OF AXISYMMETRIC SHELL STRUCTURES

Posted in 2020, ENGINEERING, Issue № 03(93) March 2020 | 0 comments

The paper considers the problem of free oscillations of axisymmetric shell structures, which are an arbitrary composition of shells of revolution and circular plates. Separate shells of rotation (substructure) can be made of various isotropic linearly elastic materials with variable geometric characteristics along the generatrix. In this paper, the authors have developed a technique for numerically solving a generalized eigenvalue problem that arises when considering the problems of calculating the strength of shell structures.

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NONEQUILIBRIUM THERMODYNAMICS. FIELD THEORY AND VARIATIONAL PRINCIPLES

Posted in 2020, ENGINEERING, Issue № 03(93) March 2020 | 0 comments

The article offers a general theoretical review of the concepts of nonequilibrium thermodynamics from the basic postulates of the classical field theory and its variational principles. Onsager’s linear thermodynamics and its principle of least energy dissipation are considered in the paper. Particular attention is paid to another formulation of this principle, formulated by I. Gyarmati, in the space of forces with constant flows for a local functional. The authors also focus on the principle of minimum production of Prigogin’s entropy.

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CONDITION OF FOREST NURSERIES IN SVERDLOVSK REGION

Posted in 2020, AGRICULTURE, Issue № 03(93) March 2020 | 0 comments

The authors estimate the condition of forest nurseries of Rosleskhoz in the territory of the Sverdlovsk region. It was found that seedlings are grown both in open ground and in greenhouses in the nurseries of the region. It is possible to grow seedlings in open ground in 23 nurseries on a total area of 354.8 ha. 74% of the analyzed institutions are currently active, but only part of the sown area is used in the production of planting material. Thirteen frames for seasonal film greenhouses are located on an area of 1.3 hectares on the territory of 9 forestries. However, only two nurseries operate on an area of 0.19 hectares. The authors made a predictive assessment of the possibility of the annual production of coniferous seedlings for all categories of forest nurseries of the region. It was found that the maximum possible annual production of planting material is 130.1 million pcs. in open ground and 5.2 million pcs. in closed space. This total volume of planting material will be enough for artificial reforestation in an area of 45.1 thousand ha. The average annual demand of the region for planting material over the past ten years is up to 15.1 million seedlings. In order to produce the indicated volume of seedlings, it is necessary to use 41.1 hectares of open-air sowing branches in forest nurseries. It is found that the areas uninvolved in the cultivation of seedlings are 315 ha. This unrealized potential must be directed to the cultivation of seedlings for neighboring regions suitable for forest seed zoning.

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INFLUENCE OF CLIMATIC FACTORS ON RADIAL GROWTH OF TREES IN PINE FORESTS OF KAZAKH UPLAND

Posted in 2020, AGRICULTURE, Issue № 03(93) March 2020 | 0 comments

The paper presents the results of dendroclimatic research of the annual rings of Scots pine (Pinus sylvestris L.), growing under dry forest growing conditions of the Kazakh upland. The authors discuss the main causes of the climatic dependence of the seasonal variability of the radial growth of pine trees. It was found that the climate signal of temperature and the least degree of precipitation have the greatest influence on the width of an annual ring. The first half of the growing season completely determines the width of the annual ring, and the main climatic factor, significantly affecting the width of the annual ring of pine growing in the dry conditions of Northern Kazakhstan, is the temperature in May and June. Hot May and June negatively affect the radial growth of Scots pine, and precipitation, on the contrary, contribute to the formation of wider annual rings. In this case, the main contribution to the variability of the width of the annual ring is made precisely by the air temperature. A close relationship was found between the June rainfall and the annual growth of pine under the dry conditions of Northern Kazakhstan, but over the past 10 years, there has been a sharp decrease in the effect of June rainfall on the radial growth of pine. There is a general tendency to increase the influence of temperature and a decrease in the effect of precipitation at the end of the growing season of the previous year (July-August) over the past 10-15 years.

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PRELIMINARY PROCESSING OF SCENE IMAGES TO DETECT SEARCHED OBJECTS

Posted in 2020, ENGINEERING, Issue № 03(93) March 2020 | 0 comments

The paper formulates the problem of preliminary processing of scene images to detect specific objects – route vehicle number on color images obtained by shooting on mobile devices. Otsu method is considered as the available high-speed preprocessing methods for obtaining the optimal approximation of a grayscale (gray) image, as well as a number of standard local processing methods in a sliding window. The authors propose two heuristic pre-processing methods:

Non-adaptive conversion of color images to gray (sharpness predictor);
Gray image blurring method (ROS method), used to detect the contours on it.
The test images demonstrate the effect of applying various methods to highlight the contours and localize the area where route vehicle number is located in the images. These methods were comparised on other data – color photos and a three-color cartographic images.

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RELEVANCE OF DETERMINATION OF BARBITURIC ACID DERIVATIVES BY CHEMICAL AND TOXICOLOGICAL ANALYSIS ON EXAMPLE OF CYCLOBARBITAL

Posted in 2020, Issue № 03(93) March 2020, PHARMACEUTICS | 0 comments

The relevance of the chemical and toxicological analysis for derivatives of barbituric acid are due to common poisoning with these substances and in a mixture with other toxicologically important drugs [4], [5], [6]. The basis of the expert assessment of poisoning with derivatives of barbituric acid is a qualitative determination of the drug in the human body, considering the circumstances of the case and the clinical picture of poisoning; however, it is possible to quantify the detected drugs and their metabolites. A transparent scheme of chemical-toxicological analysis was compiled and optimized in forensic chemical expert studies of biological objects to improve the diagnosis of poisoning with derivatives of barbituric acid.

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FEATURES OF ACTIVE BEZYMYANNYY STRATOVOLCANO FORMATION ON KAMCHATKA

Posted in 2020, GEOLOGY AND MINERALOGY, Issue № 03(93) March 2020 | 0 comments

The paper highlights the results of a study of volcanic processes on a large active Bezymyannyy stratovolcano, located on the Eastern mountain range of Kamchatka, in the Klyuchevskaya group of volcanoes of the Holocene age. This is one of the most active volcanoes in the world, characterized by continuous short-term explosive eruptions with powerful emissions of ash material, accompanied by lava flows and the formation of extrusions. This volcano became world-famous on March 30, 1956, among Soviet and foreign volcanologists, when there was a catastrophic eruption, which in the geological literature was called “directed explosion” or “Bezymyannyy type eruption.” In addition to volcanic structures, peculiar volcanic-sedimentary deposits of the volcano were also studied, represented by the so-called tephroids, which are the product of the movement and re-eruption of volcanic-clastic material of eruptions.

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COMPARATIVE ANALYSIS OF UROLITES STRUCTURE FROM OF MADHYA PRADESH (INDIA) STATE AND UROLITES FROM TOMSK REGION (RUSSIA)

Posted in 2020, GEOLOGY AND MINERALOGY, Issue № 03(93) March 2020 | 0 comments

The paper presents the results of the study of morphology, structure, mineral and chemical composition of uroliths from the Madhya-Pradesh state (India) and uroliths from the Tomsk Region (Russia). The authors studied the morphology of uroliths and their structural features, as well as the mineral composition and relationships between minerals. The comparison of the morphology, structure and mineral composition of uroliths obtained from Indian patients showed that the uroliths from the Indian state of Madhya-Pradesh are similar to those from the Siberian region.

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CORRELATION BETWEEN SUGAR-REDUCING PHARMACOTHERAPY AND DEPRESSION LEVEL IN COMORBID PATIENT WITH DIABETES MELLITUS TYPE 2

Posted in 2020, Issue № 03(93) March 2020, MEDICINE | 0 comments

The data from the pharmacological and epidemiological study of FORSAIT-SD2 show that patients with diabetes mellitus (DM) type 2 have an average of 2 to 6 concomitant pathologies, and global statistics also indicate that depressive have an increasing share among comorbid pathologies. The lack of identification and timely correction of psychoemotional disorders in patients with diabetes mellitus type 2 affects not only the patient’s quality of life but also the effectiveness of sugar-lowering pharmacotherapy. In turn, hypoglycemic pharmacotherapy can affect the development or progression of depression. This paper discusses the aspect of daytime sleepiness and depressive disorders in patients with diabetes mellitus type 2 with metformin therapy as part of multicomponent pharmacotherapy.

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STUDYING POSSIBILITY OF USING VEGETABLE PHENOLIC COMPOUNDS TO PREVENT DAMAGE TO MEAT PRODUCTS

Posted in 2020, BIOLOGY, Issue № 03(93) March 2020 | 0 comments

The paper discusses the results of studies of the antioxidant activity of water extracts obtained from various parts of the plants of the family of Lamiaceae (Labiaceae) – field mint, garden mint, lemon balm, purple basil. It was found that water extracts from plants of the family Lamiaceae – field and garden mint, violet basil, and lemon balm can be used as safe antioxidants in the technology of vegetable oils and fat-containing products, such as minced meat. It was shown that the extracts from violet basil have the highest antioxidant activity, and the extracts of garden mint have the least activity. The effect of the number of plant extracts on meat safety was also studied.

The extracts from plants of the Lamiaceae family containing phenolic compounds of various classes are not inferior to synthetic antioxidants in their antioxidant activity. Studies conducted on the feasibility of using extracts from some plants of the family of Lamiaceae as antioxidants for fats and fat-containing products show that these extracts can be used to prevent or slow down oxidative processes, leading to a decrease in nutritional value and shelf life of food products.

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COMPARATIVE ANALYSIS OF SOIL AND VEGETATION IN DALNIYE ZELENTSY VILLAGE AND CITY AREA OF MURMANSK

Posted in 2020, BIOLOGY, Issue № 03(93) March 2020 | 0 comments

This paper briefly presents the description and comparative characteristics of soils selected in 2019 at eight sites near the Dalnie Zelentsy village (East Murman) and on the territory of the city of Murmansk. It was revealed that the vegetation at the sites is represented by typical tundra species, subjected to anthropogenic impact and succession. Most soils are acidic Al-Fe-humus peaty podzols. By granulometric composition, all soil samples are sandy loam. Soil organisms live mainly in the upper organogenic horizon. Ciliata is the basis of soil biocenosis. The most common infusoria are the genera Colpoda, Stylonychia and Oxytricha sp. A study of the vegetation, thickness, and structure of the soil profile, and an assessment of the contemporary biodiversity of the protist fauna, may be important for monitoring the soil cover and determining the direction of soil processes.

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EVALUATION OF DECORATIVE QUALITIES OF NEW VARIETIES OF PEONY SELECTED BY SOUTH URAL BOTANICAL GARDEN-INSTITUTE OF UFA FEDERAL RESEARCH CENTER OF RAS

Posted in 2020, BIOLOGY, Issue № 03(93) March 2020 | 0 comments

Applying two methods (visual assessment of the area of the perceived color surface and the area of the horizontal projection of the color spot on the peony bush) the authors selected the most decorative cultivars species (Appassionata, Ijun’, Lyudmila Mironova, Mechta S.P. Koroleva, Ogni Ufy, Polyarnik 8, Sabantuy, Utro Rodiny, Ufimets) as a result of assessing the decorativeness of 20 peony varieties selected by the South Ural Botanical Garden-Institute, a structural unit of the Federal State Budget Scientific Institution of the Ufa Federal Research Center of the Russian Academy of Sciences according to the method developed in the Botanical Garden of Moscow State University. These varieties are recommended for further implementation in the production and landscaping of cities and towns of the Republic of Bashkortostan.

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ONTENTS OF LIPID-HYDROCARBON COMPLEX COMPONENTS IN MOLLUSCS IN SEVASTOPOL OFFSHORE STRIP (BLACK SEA)

Posted in 2020, BIOLOGY, Issue № 03(93) March 2020 | 0 comments

The offshore strips of coastal cities are of a great economic and recreational importance. They concentrate pollutants from both a coast and a sea, while at the same time providing the most significant contact of people with the marine environment. An important role in the interaction with pollutants belongs to coastal overgrown communities of macrophytes. As for the Sevastopol region, brown alga Cystoseira barbata (Stackh.) C.Agardh (1920) forms the vast underwater marine growth; its thalli are inhabited by various representatives of gastropods and bivalves, such as Rissoa splendida (Eichwald, 1830), Bittium reticulatum (da Costa, 1778), Gibbula divaricata (Linnaeus, 1758), Tricolia pullus (Linnaeus, 1758), Parvicardium exiguum (Gmelin, 1791), Mytilaster lineatus (Gmelin, 1791). The paper presents data on the content of total lipids and petroleum hydrocarbons in these mollusks. The content of total lipids in mollusks was determined by a color reaction with a phosphovaniline reagent followed by densitometry, and petroleum hydrocarbons by infrared spectrometry. The results of the studies allow us to recommend the most common mollusks Rissoa splendida living on the Cystoseira as new indicator species for assessing low levels of oil pollution in the offshore strip of the Black Sea coast of the Crimean peninsula. At the same time, these hydrations can be used to assess the microbiological flows of petroleum hydrocarbons in predicting the environmental consequences of oil pollution of coastal waters.

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ABOUT INVENTORY PROCEDURES AND FEATURES OF SPRINGS IN KAMYSHLINSKY DISTRICT OF SAMARA REGION

Posted in 2020, BIOLOGY, Issue № 03(93) March 2020 | 0 comments

Due to the shortage of drinking water in various regions of Russia, groundwater and places of its exposure are of great interest. The results of the latest inventory of the springs in the Samara region were obtained in 2002. But, the need for a new study has become topical again. Some of the springs are in an unsatisfactory condition, require reclamation and care; others were missed during the previous inventory or formed recently. We have examined 18 springs of the Kamyshlinsky district of the Samara region, 6 of which were revealed for the first time. Flora of springs and water protection zones includes 202 species of vascular plants and 105 taxa of algae. There are 19 rare plant species recorded in the vegetation. Most springs require immediate protection.

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PRIMARY INTRODUCTION TESTS OF GARDEN FORMS OF CONIFERS OF CUPRESSACEAE RICH. EX ARTL FAMILY IN CHUYA VALLEY

Posted in 2020, BIOLOGY, Issue № 03(93) March 2020 | 0 comments

The paper presents the results of primary introduction tests of garden forms of conifers of the Cupressaceae Rich. ex Bartl family in the Chuya valley. The studies were conducted with nine garden forms of Thuja occidentalis L., 5 – Juniperus L., 3 – Chamaecyparis Sрасh, and 2 — Сryptomeria japonica Don. Planting material was obtained by seedlings and cuttings. Cuttings were rooted using growth stimulants. Subsequently, rooted cuttings were planted in open ground. Various forms are characterized by low, medium, and high winter hardiness and growth rate. Garden forms of conifers of the Cupressaceae Rich. ex Bartl. family, except for two types of cryptomeria, and Thuja occidentalis “Smaragd” successfully passed the initial introduction tests in the Chuya Valley.

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THE EFFECT OF MELATONİN ON GABA EXCHANGE IN THE BRAIN STRUCTURES OF RATS İN EARLY POSTNATAL ONTOGENESIS UNDER THE CONDITIONS OF TOLUENE INTOXICATION

Posted in 2020, BIOLOGY, Issue № 03(93) March 2020 | 0 comments

The study investigated the effect of melatonin on GABA exchange in different tissues of the brain of 1-month-old rats under the conditions of toluene intoxication. As a result of the toluene effect, the content of GABA has increased and the content of Glu and Asp has decreased in different brain structures of 1-month-old rats. At the same time, the activity of the GAD has increased, and the activity of the GABA-T has decreased. The effect of melatonin under the conditions of toluene intoxication has led to a partial recovery of all the components involved in the GABA exchange. Melatonin corrects GABA exchange in brain in the context of toluene intoxication.

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RATIONAL ORGANIZATION OF CULTIVATED LAND – BASIS FOR CONSERVATION OF LAND RESOURCES AND INCREASING THEIR PRODUCTIVITY

Posted in 2020, AGRICULTURE, Issue № 03(93) March 2020 | 0 comments

The paper presents the analysis of the state of land resources from the point of view of their susceptibility to degradation as a result of water erosion, causing a decrease in soil fertility and crop yields. The author presents the experimental data on the intensity of erosion processes on ordinary chernozems on the territory of agricultural land in the Rostov region. It was proved that the problem of rational use of land resources for the production of crop production does not lose its significance but also becomes more urgent, and its solution is impossible without creating cultivated lands that are resistant to the effects of degradation, ensuring the conservation and, in some areas, restoration of soil fertility. The main stages of the work on the adaptive-landscape arrangement of the territory of cultivated lands, which creates the basis for a complex of soil protection measures, are considered; it is proposed to carry out a complex of these measures in the list of regional priorities with appropriate funding for the work.

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EVALUATION OF BIOLOGICAL AND ECONOMIC EFFICIENCY OF MODERN LOW-HAZARD CHEMICAL FUNGICIDES AGAINST YELLOW RUST UNDER CONDITIONS OF KRASNODAR REGION

Posted in 2020, AGRICULTURE, Issue № 03(93) March 2020 | 0 comments

The chemical method remains the main one in the integrated plant protection system. Eighty-one types of mono- and multicomponent preparations, in which the majority of the active substances belong to the thiazoles and strobilurins groups, are allowed for use in the territory of the Russian Federation against yellow rust of wheat in 2019. The paper describes the current methods to struggle with yellow rust of wheat; the positive and negative sides of chemicals for plant protection are noted as well. As a result of assessing the biological and economic effectiveness of the double use of such drugs as Altazol, KE, Adeksar, KE and Zantara, KE in the tubing phase (Z 33-37) and the beginning of heading (Z 49-51), a decrease in the development of the disease to 0.1-0 was found, 5% and maximum yield increase in relation to control up to 5%.

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ASSESSMENT OF USAGE OF NATURAL RESOURCES IN AGRICULTURAL PRODUCTION

Posted in 2020, AGRICULTURE, Issue № 03(93) March 2020 | 0 comments

The paper discusses the features of environmental and economic production relations; the analysis of land use is given as well. The need to switch to a landscape system is associated with a change in the quality of land, and the preservation of natural landscapes. Social events aimed at the rational use of natural resources provide for a system of actions to preserve natural resources, improve soil productivity and other factors of production.

The author provides the features of the resistance of crops and cultivation histories to erosion processes; the features of the production activities of an agricultural enterprise are considered as well. The analysis of intensification factors in the branches of agriculture is given. The author determines the indicators of growth in production, and rational use of resources.

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RESEARCH OF DIFFUSIVE POLLUTION IN SMALL RIVERS ON EXAMPLE OF YACHROMA RIVER

Posted in 2020, AGRICULTURE, Issue № 03(93) March 2020 | 0 comments

The paper presents the results of the research on pollution in the small Yakhroma river, the part of the Upper Volga basin, in order to establish the effect of diffuse runoff from agricultural lands on the quality of river water to identify the main sources of pollution. It was established that along the length of the Yakhroma longitudinal profile, water mineralization with approximately the same gradient increases from source to mouth from 89 mg/L along the upper reaches to 228 mg/L in the spring and from 321 to 509 mg/L in the summer, due to the influx of pollutants from small point sources, the transport network, insufficiently treated wastewater from the cities of Yakhroma and Dmitrov, from agricultural fields and reclamation systems. The following substances are carried out with drainage water from the floodplain (per year): nitrogen compounds more than 7-10 kg/ha per year, phosphorus on average 0.02-0.04, and potassium from 8 to 37 kg/year.

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