Vestnik MGTU最新文献_第3页

Structural features of the upper part of the section of the Gorniy Altai Uimon depression according to electrotomography data using 3D software 基于三维软件电地形数据的戈尔尼-阿尔泰-乌蒙凹陷剖面上部结构特征

Vestnik MGTU Pub Date : 2023-06-30 DOI: 10.21443/1560-9278-2023-26-2-160-169

Z. Y. Kuzina, N. Nevedrova, А. M. Sanchaa

{"title":"Structural features of the upper part of the section of the Gorniy Altai Uimon depression according to electrotomography data using 3D software","authors":"Z. Y. Kuzina, N. Nevedrova, А. M. Sanchaa","doi":"10.21443/1560-9278-2023-26-2-160-169","DOIUrl":"https://doi.org/10.21443/1560-9278-2023-26-2-160-169","url":null,"abstract":"Determining the structure of intermountain depressions in seismically active regions at different depths is important for understanding the stages of neotectonic formation of the region and seismic hazard assessment. On the territory of the Uimon depression of the Altai Mountains in different years, measurements were carried out by deep methods of electrical exploration, such as sounding by the formation of the field and vertical electrical soundings. However, to clarify the structure of the upper part of the section, where bedrock outcrops are observed on the day surface, it is necessary to use shallow methods, for example, electrical tomography (ET). The paper discusses the results of ET data interpretation using 2D and 3D inversion when studying basement outcrops in the western part of the basin. Taking into account a priori information and the obtained models, the geological structure of the object of study has been refined. Based on the results of the interpretation of the data of electrotomography using programs of two- and three-dimensional inversion, the geoelectric structure of one of the outcrops of the basement rocks on the day surface has been determined. The immersion of the studied object in the western direction towards the adjacent outcrop of rocks of the Baratal Formation of smaller sizes located in the immediate vicinity has been established. It can be assumed that these two exits are connected at a depth of 15–20 m and, most likely, are one structure.","PeriodicalId":30200,"journal":{"name":"Vestnik MGTU","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46464910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reconstruction of the conditions for the formation of red-colored sandstones of the Tersky coast based on a comparative analysis of the structure of ancient and modern deposits (Kola Peninsula) 基于古代和现代矿床结构的对比分析，重建特尔斯基海岸红色砂岩的形成条件（科拉半岛）

Vestnik MGTU Pub Date : 2023-06-30 DOI: 10.21443/1560-9278-2023-26-2-180-190

Yury N. Neradovsky

{"title":"Reconstruction of the conditions for the formation of red-colored sandstones of the Tersky coast based on a comparative analysis of the structure of ancient and modern deposits (Kola Peninsula)","authors":"Yury N. Neradovsky","doi":"10.21443/1560-9278-2023-26-2-180-190","DOIUrl":"https://doi.org/10.21443/1560-9278-2023-26-2-180-190","url":null,"abstract":"The paper presents the results of studying the Riphean red-colored sandstones of the Tersky coast of the White Sea. 21 structural elements characterizing the conditions of rock formation have been considered, including 15 ancient and 6 modern deposits. Observations were carried out for 10 years in two areas of the White Sea coast. The purpose of the research is to establish the reasons for the absence of organic matter, the origin of the hematite admixture in the Riphean sandstones, and to assess the climatic conditions during their formation. These issues are key to identifying the Proterozoic red formation. The data have shown that some rock structures are similar in ancient and modern deposits. Such structures include, for example, wave ripples repeating in detail the dimension, shape, and orientation in both epochs, and therefore can be used to assess ancient marine sedimentation conditions. However, most of the structures testify to fundamental differences in the conditions of rock formation. It has been established that takyrs were systematically formed in ancient rocks and hematite was deposited, which indicates the arid climate in the Riphean and the specific composition of sea water. The most important difference between ancient deposits is the absence of fauna and flora in them.","PeriodicalId":30200,"journal":{"name":"Vestnik MGTU","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47780524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of tonal audiometry methods to assess the hearing of grey seals in air and water environments 音调测听法在空气和水环境中灰海豹听力评估中的应用

Vestnik MGTU Pub Date : 2023-06-30 DOI: 10.21443/1560-9278-2023-26-2-121-130

M. Pakhomov, A. A. Zaytsev, Yu. V. Litvinov, A. R. Troshichev

{"title":"Application of tonal audiometry methods to assess the hearing of grey seals in air and water environments","authors":"M. Pakhomov, A. A. Zaytsev, Yu. V. Litvinov, A. R. Troshichev","doi":"10.21443/1560-9278-2023-26-2-121-130","DOIUrl":"https://doi.org/10.21443/1560-9278-2023-26-2-121-130","url":null,"abstract":"Anthropogenic noise load on the traditional habitats of marine mammals continues to increase due to the active development of the Arctic zone. The study of the hearing of Arctic seals is of great importance for the development of measures to reduce the impact of technogenic noise. During the study, a group of ten grey seals of different ages and genders has been trained to press a special key when demonstrating a pure tone sound with a frequency from the standard and extended set of frequencies recommended for pure tone audiometry. The experiments have been carried out by placing the key and the sound source in air and water (at a depth of 2 m) environment. The main indicator is the reaction time of the seal to the demonstrated stimulus. For each seal, individual audiograms for hearing in air and in water have been compiled using 32 frequencies. An analysis of the data obtained has shown that the reaction time can serve as an individual indicator in the study of the hearing of grey seals reflecting their age characteristics. According to the response time to sounds with different tone frequencies it is possible to establish biologically significant and indifferent frequencies for grey seals.","PeriodicalId":30200,"journal":{"name":"Vestnik MGTU","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41663569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Processing of ore from the Nud II deposit by the method of low-temperature roasting with ammonium sulfate 硫酸铵低温焙烧法处理NudⅡ矿床矿石

Vestnik MGTU Pub Date : 2023-06-30 DOI: 10.21443/1560-9278-2023-26-2-137-149

A. Goryachev, D. Makarov, S. Potapov, A. T. Belyaevskiy, V. V. Semushin, A. Kompanchenko

引用次数: 0

Features of the population structure of Fucus vesiculosus L. (Phaeophyceae) in different areas of the Murmansk coast of the Barents Sea, 2021 2021年巴伦支海摩尔曼斯克海岸不同地区岩藻科岩藻种群结构特征

Vestnik MGTU Pub Date : 2023-06-30 DOI: 10.21443/1560-9278-2023-26-2-112-120

S. Malavenda, V. D. Nikulina

{"title":"Features of the population structure of Fucus vesiculosus L. (Phaeophyceae) in different areas of the Murmansk coast of the Barents Sea, 2021","authors":"S. Malavenda, V. D. Nikulina","doi":"10.21443/1560-9278-2023-26-2-112-120","DOIUrl":"https://doi.org/10.21443/1560-9278-2023-26-2-112-120","url":null,"abstract":"The age, size-mass and reproductive structure of the Fucus vesiculosus population in the areas of the Murmansk coast has been studied on boulder soils of the middle horizon of the littoral with weakened surf. In the studied areas characterized by different temperature conditions and the degree of anthropogenic impact the biomass of F. vesiculosus does not differ statistically significantly. The minimum population size has been found in the middle knee of the Kola Bay, the maximum – at the eastern stations. In the warmer Pechenga and Retinskaya Bays, receptacles form on thalli with more branching than in the Zelenetskaya and Yarnyshnaya Bays; thalli in western Murman have a lower age of appearance of receptacles. The linear dimensions of thalli and their mass do not differ in the studied areas. The beginning of zygote germination judging by the size of seedlings is the same on the entire coast. Maximum fertility is observed at the age of 2.5–3 years. Differences between the coenopopulations of F. vesiculosus in Western and Eastern Murman indicate the important role of climate in shaping the appearance of littoral vegetation. The current level of pollution in the Kola Bay has a negative impact on the survival of fucus seedlings, however, it can be concluded that the life span of thalli is high and the population is stable.","PeriodicalId":30200,"journal":{"name":"Vestnik MGTU","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41566814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Taxocene of polychaeta of the Laspi Bay water area (the Crimea, Black Sea) 黑海克里米亚拉斯皮湾水域多毛纲动物的Taxocene

Vestnik MGTU Pub Date : 2023-03-31 DOI: 10.21443/1560-9278-2023-26-1-69-77

V. Kopiy

{"title":"Taxocene of polychaeta of the Laspi Bay water area (the Crimea, Black Sea)","authors":"V. Kopiy","doi":"10.21443/1560-9278-2023-26-1-69-77","DOIUrl":"https://doi.org/10.21443/1560-9278-2023-26-1-69-77","url":null,"abstract":"The coastal zone of Laspi Bay (the Crimea, Black Sea) is attractive for the development of recreational activities. It can negatively affect the state of the bay ecosystem and adjacent waters. The aim of this study is to assess the current state of polychaetes inhabiting the loose soils of the littoral and sublittoral areas of Laspi Bay. In 2016–2019 the fauna of polychaetes was studied in the waters of Laspi Bay. Macrozoobenthos were collected on cruises 84, 86, 96, 108 aboard the research vessel Professor Vodyanitsky and in coastal expeditions. 89 samples were taken (19 deep-water, 70 coastal). 45 species of polychaetes were identified. The average abundance of Polychaeta was 2 368 ± 467 ind./m2. The average biomass was 44,128 ± 13,919 g/m2. Terebellides stroemii makes a significant contribution to the formation of these indicators. The ranked series by density index is headed by T. stroemii, Nephtys hombergii and Melinna palmata. The largest abundance of species is noted at a depth of 46 m where the soil is represented by sand and pebbles. The highest number is noted at depths of 93.5–98 m. Prionospio сirrifera makes the main contribution to the total number. The highest biomass is noted at depths of 53.5–58 m. T. stroemii makes the main contribution to the total biomass. In the Laspi Bay waters are recorded characteristic species – P. сirrifera and Micronephthys longicornis. They are found both in shallow waters and at great depths. Rare species found only at one station include 18 polychaete species. The results obtained give an idea of the taxonomic composition of polychaete worms in the waters of Laspi Bay and can be useful for further monitoring of this area.","PeriodicalId":30200,"journal":{"name":"Vestnik MGTU","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49170648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of errors and inaccuracies in the current edition of the GOST R ISO 7730-2009 standard 分析当前版本的GOST R ISO 7730-2009标准中的错误和不准确之处

Vestnik MGTU Pub Date : 2023-03-31 DOI: 10.21443/1560-9278-2023-26-1-45-56

{"title":"Analysis of errors and inaccuracies in the current edition of the GOST R ISO 7730-2009 standard","authors":"","doi":"10.21443/1560-9278-2023-26-1-45-56","DOIUrl":"https://doi.org/10.21443/1560-9278-2023-26-1-45-56","url":null,"abstract":"The paper analyzes the inaccuracies and inconsistencies of the national standard GOST R ISO 7730-2009 \"Ergonomics of the thermal environment. Analytical determination and interpretation of the comfort of the thermal regime using the calculation of PMV and PPD indicators and criteria of local thermal comfort\" and similar international standard ISO 7730:2005. These standards are designed to assess the quality of the internal environment in order to comply with international practices both in the field of environmental sustainability and in the field of energy efficiency of construction. The authors have investigated and described inaccuracies and inconsistencies, have proposed their corrections in Sections 4 and 5, which establish the method of calculating the predicted mean estimate (PMV – Predicted Mean Vote) and the predicted percentage of dissatisfied with the temperature environment (PPD – Predicted Percentage of Dissatisfied), as well as in Appendix D, which contains a listing of the PMV calculation program in the BASIC language. The paper has been written in accordance with the recommendations developed during the implementation of the international project KO1089 \"Green Arctic Building\" of the Cross-Border Cooperation Program.","PeriodicalId":30200,"journal":{"name":"Vestnik MGTU","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42839360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental evaluation of toxic resistance of benthic microalgae Thalassiosira excentrica Cleve 1903 (Bacillariophyta) under the copper ions impact 海底微藻异圆藻Cleve 1903（Bacillarophyta）在铜离子作用下的抗毒性实验评价

Vestnik MGTU Pub Date : 2023-03-31 DOI: 10.21443/1560-9278-2023-26-1-78-87

A. Petrov, E. Nevrova

{"title":"Experimental evaluation of toxic resistance of benthic microalgae Thalassiosira excentrica Cleve 1903 (Bacillariophyta) under the copper ions impact","authors":"A. Petrov, E. Nevrova","doi":"10.21443/1560-9278-2023-26-1-78-87","DOIUrl":"https://doi.org/10.21443/1560-9278-2023-26-1-78-87","url":null,"abstract":"With an increase in anthropogenic pressure on the ecosystem of the coastal zones of the sea, the relevance of assessing the state of plankton and benthos communities also increases. In the course of the study, the dynamics of the number of cells of the clone culture Thalassiosira excentrica Cleve 1903 (Bacillariophyta) has been determined under the influence of CuSO4·5H2O of various concentrations (32–1024 µg·L–1) under the conditions of 10-day experiments. In the control and at a low concentration of Cu2+, the proportion of living cells remains almost unchanged. The threshold concentration of copper ions for the survival of T. excentrica is 128 µg·L–1. At higher concentrations of Cu2+ (256–1024 µg·L–1), a sharp inhibition and death of the culture has been noted already within 1–3 days. The increase in the absolute number of cells at low concentrations of copper (32–64 µg·L–1) is described by the sigmoid response curve of the test-object. The growth values increase by 4–8 times on the 1st–5th day and decrease by 25–30 % by the 10th day. At Cu2+ concentrations of 128–256 µg·L–1, there is no positive increase in the number of cells on days 1–5; on subsequent days, it decreases by 2 times or drops to zero. The intensity of the specific cell growth significantly decreases depending on the increase in the concentration of the toxicant. It has been found that on days 1–5, the specific increase is positive in the range of copper concentrations of 32–128 µg·L–1 and negative – at concentrations of 256 µg·L–1 and higher. In the period of 5–10 days, for all concentrations of the toxicant, the values of the specific increase are negative. The obtained results make it possible to recommend T. excentrica as a promising test object for toxicological experiments.","PeriodicalId":30200,"journal":{"name":"Vestnik MGTU","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48084849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evolution of the Keivy domain in the Precambrian 前寒武纪凯维域的演化

Vestnik MGTU Pub Date : 2023-03-31 DOI: 10.21443/1560-9278-2023-26-1-18-24

N. Kozlov, N. Sorokhtin, T. S. Marchuk

引用次数: 1

Development of a model of atmospheric aerothermodynamics for the study of dusting processes at tailings dumps using COMSOL software 利用COMSOL软件开发了用于尾矿堆场除尘过程研究的大气空气热力学模型

Vestnik MGTU Pub Date : 2023-03-31 DOI: 10.21443/1560-9278-2023-26-1-25-44

P. Amosov, A. Baklanov

{"title":"Development of a model of atmospheric aerothermodynamics for the study of dusting processes at tailings dumps using COMSOL software","authors":"P. Amosov, A. Baklanov","doi":"10.21443/1560-9278-2023-26-1-25-44","DOIUrl":"https://doi.org/10.21443/1560-9278-2023-26-1-25-44","url":null,"abstract":"An overview of studies of aerothermodynamics and atmospheric pollution at mining facilities using computational fluid dynamics software systems (CFD modeling) has been presented. Both specialized and non-specialized software are marked. The review focuses on the studies performed using the FLOWVISION, ANSYS FLUENT and COMSOL software codes. An aerothermodynamic model of the atmosphere is described in which the equations of dynamics in the incompressible fluid approximation are supplemented by the heat transfer equation and the parameters of Coriolis, convection (buoyancy), background stratification and radiation flux. The necessary modifications in the COMSOL software are described, which make it possible to carry out studies of atmospheric aerothermodynamics under various atmospheric conditions. A two-dimensional CFD model of the atmosphere has been built and tested on a simplified representation of the tailings dump. At a fixed wind flow velocity of 5 m/s and variations in the background stratification parameter (from –0.05 to +0.05 °C/m), numerical experiments have been performed and the calculation results have been analyzed. Differences in the aerodynamic parameters of the flows and the spatial distribution of temperature under different atmospheric conditions are noted. Estimates of the dynamic velocity at the dusting height and the vertical mass flux using the empirical dependence of the dusting intensity are performed. The analytical dependence of the vertical mass flux as a function of the stratification parameter is discussed. The asymmetry (relative to the neutral state of the atmosphere) of the magnitude of the vertical mass flux in comparison with the unstable and inversion states is shown. In stable atmospheric conditions, the magnitude of the vertical flux of the dust mass, and hence the pollution of the atmosphere downstream, will be noticeably higher than in unstable states.","PeriodicalId":30200,"journal":{"name":"Vestnik MGTU","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44008070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0