North-Eastern federal university
Author list of organization
List of articles written by the authors of the organization
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06.02.00 Veterinary and Husbandry
Description
The article presents the results of a study of the features of growth and development of young bulls in the conditions of Central Yakutia when mineral feed additives are included in their rations. The scientific experience was carried out on the basis of the cattle-breeding farm "Churapcha". For the experiment were selected bullhead Hereford breed at the age of 7 months. Experimental groups of animals were formed by the method of analogues. Such indicators as age, live weight, fatness, physiological state were taken into account. The control group of bulls received the main ration. In comparison with the control group, analogs with I experimental group, in addition to the basic ration, received zeolite 0.5 g / kg body weight, 150 g sapropel and 0.04 g potassium iodide. The animals of the II experimental group received, in addition to the basic ration of zeolite hongurin, at a dose of 0.7 g / kg body weight, 200 g of sapropel with 10 g of copper sulphate. The duration of scientific experience - 7 months. Studies have shown that the addition to the diet of mineral feed additives has influenced the growth and development of bulls. So, when the age of 15 months was reached, according to the compactness index, the bulls of the control group were slightly inferior to their peers by 0.9 % compared to the first experimental group and 5.8 % to the second experimental group. According to the massiveness index, gobies of the I and II experimental groups exceeded the gobies of the control group by 0.5 % and 0.3 %. Upon reaching the age of 15 months on the index of compactness, the bulls of the experimental groups had the best indicators
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MODERN STATUS AND TRENDS OF DEVELOPMENT OF GRAIN PRODUCTION IN THE REPUBLIC OF SAKHA (YAKUTIA)
06.00.00 Agricultural sciences
Description
The article considers the current state of production of grain crops in the Republic of Sakha (Yakutia). The analysis of gross collection, structural shifts, sowing area and yield of grain crops over the past five years is being carried out. Also, the application of mineral and organic fertilizers to crops of cereals is being investigated, since their application is of great importance for obtaining high and stable harvests of grain crops. Based on the results of the analysis, conclusions were drawn and ways of development of grain production in the republic were outlined
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MORPHOLOGICAL VARIABILITY OF IRIS HALOPHILA AN INTRODUCTION IN CENTRAL YAKUTIA
Description
Investigation variability of morphological features of Iris halophila an introduction in Central Yakutia. Dependence of morphological variability of Iris halophila on quantity of dropping-out rainfall in initial habitats is revealed
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MODIFYING V-14 RUBBER WITH CARBON FIBERS
Description
The influence of carbon fibers and modified carbon fibers on properties of industrially produced V-14 rubber is examined. The dependences of physical and mechanical properties, hardness, abrasion resistance and resistance in aggressive environment on few amount of filled fiber are established. Structural properties of reinforced elastomeric composites are studied by scanning electron microscopy. Elastomeric layer on the surface of modified carbon fiber, confirmed with high adhesion is identified
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INTRODUCTION OF IRIDACEAE IN CENTRAL YAKUTIA
Description
The results of introduction test of species and cultivars variety of irises in the Central Yakutia are described in this article. Climatic conditions of the introduction region are extreme and they are strong restrictive factor at introduction to the culture of many other species and cultivar of decorative plants. The condition of plants after rewintering was estimated on a 4-mark scale. Total number of the plants which were lost in the first winter (0 points) is 126 species and cultivars that is 60,9%. For 01.06.2015 year a collection of irises in Yakutia makes 40 exemplar of species (22 species) and 31 exemplar of cultivars (30 cultivars), 7 species of them are successfully adapted (3 points) (Iris biglumis Vahl., I. bloudowii Ledeb., I. potaninii Maxim., I. scariosa Willd., I. setosa Pallas ex Link., I. tigridia Bunge, Pardanthopsis dichotoma (Pallas) Lenz). The listed species annually plentifully blossom, form seeds and intensive form escapes. Four species Iris biglumis, I. scariosa, I. bloudowii, Pardanthopsis dichotoma are form stable self-seedling
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INTRODUCTION OF RHODIOLA ROSEA L. IN THE CENTRAL YAKUTIA
Description
The flora of Yakutia is rich in medicinal plants. Many of these plants are not still studied totally. The species Rhodiola (Crassulaceae) is one of the most popular family which are widely used by the local population for therapeutic purposes. Medicals use the rhizome and roots of Rhodiola rosea as a source of medicinal raw materials. This means the removal and destruction of plants. The procurement should be carried out solely on the basis of plants grown in culture because of the rarity and few natural reserves of the species. R. rosea L. passes a full cycle of the sprouts, blossoming and bearing fruits during the introduction in the conditions of Central Yakutia. The weather conditions of the year influence on the rate of development and growth processes very strong. The experiments determination of the germination of local reproductions were negative. The sprouts grow very good. In this case, it is good possibility of intense vegetative reproduction of Rhodiola. The evaluation of stability of introduction may be attributed to the kind of group stability. The great potential and adaptive capacity of R. rosea significantly enhances the possibility of growing this species under conditions of the Central Yakutia. It is recommended to improve and elaborate of protection of natural populations and unique plant communities
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STUDY OF POLYMERIC MATERIALS PERFORMANCE IN FRICTION CONDITIONS WITH ICE AND SNOW
Description
The problem of identifying of the most promising polymer materials for sledge sliding application. The comparison of materials is given: the bench tests of polyethylene, fluoroplast, steel and ultra high molecular weight polyethylene (UHMWPE) with different molecular weight and their composites are carried out. On the basis of research of polymeric samples on ice and snow friction in exploiting condition with the use of specially designed sledges was shown that GUR 4150 UHMWPE has the lowest mass volume and linear wear. Also in article the results of research of ice adhesion to different materials are presented. Adhesion research was carried out in low temperature conditions of air from -21oC up to -46oC and in cryocamera according method which was patented by Institute of oil and gas problems of SB RAS. The research showed that GUR 4150 UHMWPE has the lowest adhesion to ice. On the basis of obtained data the authors assumed that GUR 4150 is the most perspective materials for development of sledge sliding exploiting in Arctic conditions.
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10.00.00 Philological sciences
Description
The article gives a description of terms of relationship «аgа usа» (the male related group) and «ije usa» (the female related group) in Yakut. This work carries out the analysis of the existing points of view of the discussed terms, also it gives the review of their structure and discusses the distinctive features of each related group
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THE STRUCTURAL ANALYSIS OF THE YAKUT ALGYSES SPELLS
10.00.00 Philological sciences
Description
The article is dedicated to one of the oldest genres of the Yakut folklore. Algys is connected with perception of the world and the socio-economic structure of the Sakha people. Basing on the structural anthropology of Claude Levi Strauss, the author analyzes three Yakut algyses: "Spell of Fire ", "Spell of Bayanaj ", "Supplication of Fisherman". The results of the structural analysis of three well-known Yakut algyses confirm the efficiency of the ideas of Claude Levi Strauss and the validity of using of author's methodological approaches
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Description
The article describes the environmental conditions and plant communities with Iris laevigata for the selection of optimal locations of its growth. The structure of natural populations can be a model for the creation of artificial populations of these species
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