bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of plant species diversity (Lamiaceae Lindle.) in Uzbekistan based on DNA barcoding
Authors: Nikitina E.V. , Yu. Beshko N. , Omarov S.A. 
Published: August 2022

Abstract
Biological diversity preservation is important concept in modern science and environmental policy of Uzbekistan, improving the status of global biodiversity. Flora of Uzbekistan accounts over 4380 species of vascular plants. 378 taxa representing approximately 9% of currently recognized species diversity of Uzbekistan are considered as a national endemics. The present study aimed at species identification and inventory of wild, rare and endangered plant species based on molecular genetic techniques. For effective species identification and high results reliability, the genotyping of three-four loci of the combinations nuclear and chloroplast DNA-barcodes was performed for all studied species. The genotyping of marker sequences ITS, rbcL, trnL-trnF, matK for Dracocephalum adylovii I.I. Malzev is conducted the first time in Uzbekistan. The reliable similarity in the BLAST database is determined at the genus taxonomic level. 78 consensus nucleotide sequences were obtained for Lamiaceae species. The results of molecular phylogenetic analysis based on marker sequence encoding the matK fragment are presented for representative of three subfamilies: Lamioideae, Nepetoideae, Scutellarioideae recorded in the flora of Uzbekistan. Currently, the solution of biological diversity preservation is global. The possibility of successful application of DNA-barcoding for ecological monitoring is demonstrated.
Species diversity and phylogenetic relationships within the tribe Mentheae (Lamiaceae) in Uzbekistan using ITS sequence data
Authors: Nikitina E , Khalbekova Kh 
Published: August 2022

Abstract
Regular monitoring and comprehensive study of natural populations rare endangered species, both by classical taxonomy and molecular genetic analysis methods are of considerable importance all over the world. This work has focused at the research of species diversity flora of Uzbekistan using combinations of DNA markers. Currently, there are no universal DNA site for plant species identification. Pairwise sequence alignments and multiple sequence alignments are made using ClustalW program. DNA sequence data were used to verify the taxonomic identity and phylogenetic aspects of the studied representatives the tribe Mentheae (Lamiaceae) collected in Uzbekistan territory. The phylogenetic analyzes of this tribe was reconstructed for 44 species, representing 19 genera using nuclear ribosomal DNA internal transcribed spacer region (nrITS), containing ITS1 and ITS4 adopted as an important basis, since it can provide a high resolution of relationships. 15 consensus ITS gene sequences were obtained for studied species in this work and 29 published molecular sequence data from GenBank were used. Dendrograms were constructed using hierarchical clustering with the software Mega X. The parsimony analyses were resulted in an accurate consensus tree. Three major clades was identified within the tribe Mentheae. So, this paper demonstrates the successfully usefulness of DNA technology as a tool for genetic inventory at the species diversity assessment of rare endangered plants.
V International scientific and practical conference “Actual problems of the energy complex: physical processes, mining, production, transmission, processing and environmental protection” (APEC-V-2022)
Authors: Sadullozoda Shahriyor , Uzakov Gulom , Gibadullin Arthur 
Published: August 2022

The presented material is devoted to the results of the V International scientific and practical conference “Actual problems of the energy complex: physical processes, mining, production, transmission, processing and environmental protection” (APEC-V-2022).
List of International Program Committee are available in this pdf.
Analysis of electricity consumption of electrical machines of a coal industry enterprise using the wavelet transform
Authors: Manusov V Z , Orlov D V , Sultonov Sherkhon , Ahyoev Javod , Bumtsend Uyangasaikhan 
Published: August 2022

Abstract
The priority directions of the prospective development of the energy sector involve improving the quality of generated electricity, reducing the consumption of fuel resources, and implementing modern technologies and methodologies. These strategies are considerably aimed at enterprises of the fuel and energy sector having individual features of electricity consumption. Predictive control of technological processes of these objects is a relevant problem that, in turn, requires the use of up-to-date methods of data analysis and processing. One of these methods is the wavelet transform having several advantages over known methods, such as the Fourier transform. The paper presents a comparative analysis of the wavelet transform of active power consumption for various excavators of a mining enterprise in the Siberian region. The obtained results illustrate the statistics of operation of each excavator and allow making conclusions about their operation for a chosen time interval and presenting them in the form of a 3D model. Mathematical instruments of wavelet analysis can be introduced into existing complexes of automated control systems for the production process of enterprises. The proposed method indicates the possibility of developing the predictive control in the electricity consumption process, planning price categories and optimizing the load schedule with cost reduction and an increase of the financial profit of the enterprise.
Energy saving and energy efficiency improvement in the Russian Federation
Authors: Chernykh A G , Barykina Y N , Shao Yuwen 
Published: August 2022

Abstract
The article emphasizes the need for developing and implementing energy-saving technologies to improve energy efficiency. Technological terms used in the process of energy saving are defined. The system of energy saving and energy efficiency improvement as an integral part of the federal energy policy of Russia is described taking into account the development of various industries. The current trends in the regulation of relations in this area are analyzed. The article describes energy-saving technologies that can be used by industrial enterprises. Based on the world and Russian practices, organizational measures in the field of energy saving and energy efficiency are suggested.
Population dynamics of forest-forming tree species on landslide-scree slopes of the right bank of the Kuibyshev reservoir (Tatarstan)
Authors: Kotova N A , Fardeeva M B , Usmanov B M 
Published: August 2022

Abstract
The dynamics of forest-forming tree populations under conditions of landslide slopes makes it possible to assess the impact and the anthropogenic regulation of the Kuibyshev reservoir on the forest vegetation state. The Shannon index characterizes the phanerophytes diversity in the structure of forests by landslide elements. The integral signs of the activity/stability of landslide processes on the slopes are the trees functional parameters – the trunks height, the dynamics of cross-sectional areas and wood volumes, reflecting not only the different trees populations state and productivity according to the landslide elements, but also the stage of phytocenoses reforestation of along the right bank of the Kuibyshev reservoir.
Modeling and research of power supply systems with renewable energy sources and hydrogen fuel cells
Authors: Marchenko O V , Podkovalnikov S V , Solomin S V 
Published: August 2022

Abstract
Currently, the creation of environmentally friendly energy systems, including only renewable energy sources, is an urgent task. In this paper, such an autonomous power supply system (microgrid) for isolated consumers is investigated. It includes photovoltaic converters, wind turbines, an electrolyzer, fuel cells, electrical energy and hydrogen storage. For its study, an original optimization mathematical model was used. The optimal structure of the system and its operation modes are determined according to the criterion of minimum total discounted costs, taking into account energy balances and a number of additional conditions and constrains. It is shown that the use of energy sources of various types and energy storage devices makes it possible to smooth out the uneven generation of solar and wind power plants. It has been established that it is expedient to use electric batteries for short-term, and hydrogen accumulators – for long-term energy storage.
Methodological toolkit for assessing the impact of renewable energy on the balanced development and preservation of the regional carbon cycle
Authors: Dvinin D , Davankov A , Plaksina A 
Published: August 2022

Abstract
The article provides methodological tools that allow to carry out a socio-ecological and economic assessment of the balance of regions in the development of renewable (alternative) energy sources. When forecasting the development of renewable energy in the region, it was taken into account that, unlike fossil fuel-based energy, it does not have a significant impact on the environment, since it uses material and energy flows circulating in natural systems. During the study, it was found that only one transition to renewable energy sources will not allow achieving carbon balance in the regions. The landscape features of the region significantly affect the possibility of its conservation. Therefore, in each region, it will be necessary to identify the area of territories with a special nature conservation status that will allow maintaining the carbon cycle. Methodological tools were tested on the example of the Chelyabinsk region of the Russian Federation. As a result, it was found to maintain a balanced carbon cycle, it will be necessary to increase the share of natural steppes to 49.1% of the total area of the region, and achieve the value of renewable energy in the regional energy balance up to 93%.
Multicriteria investigation of the efficiency of combining a NPP power unit with a heat storage system
Authors: Aminov R Z , Yurin V E 
Published: August 2022

Abstract
A heat storage system, including an additional low-power steam turbine, can provide effective participation of nuclear power plants in covering daily irregularities in energy consumption in the power system. In addition, the system provides an additional reserve for the NPP’s own needs, due to the possibility of using the energy of residual heat release from the reactor core to supply power to the station’s own needs. In the paper, the methodology developed by the authors is presented, which allows to research ways to improve the efficiency of nuclear power plants based on a comprehensive assessment of technical and economic efficiency, changes in plant safety and effects for the entire state energy system as a whole, achieved through the installation of new equipment. As an example, a thermal storage system, a steam-gas plant, and a system for passive heat removal from the reactor core have been investigated.
Removal of hydrodynamic lesions of a heated floor with a solar collector
Authors: Khamraev S I , Kh Ibragimov U , Kamolov B I 
Published: August 2022

Abstract
This paper presents the results of an experimental study of the hydrodynamic process of a solar collector water-heated floor system. The water-heated floor system is designed to heat living rooms. Based on the analysis of the structures of the hot water floor, methods of their installation and the methodology of hydrodynamic calculation of the hot floor, experimental studies were conducted on the total pressure loss in the pipes of the hot water floor and the pump power used to transfer hot water from the pipes. Experimental studies were carried out in laminar and turbulent flow regimes at different diameters and different positioning steps of the water-heated floor pipe. The results of the hydrodynamic process study showed that the pressure drop and pump power were the highest at the pipe diameter and pipe pitch of 12 mm and 100 mm, i.e. 8 kPa and 18.5 W in the laminar mode and 14 kPa and 210 W in the turbulent mode. . Results obtained as the pressure loss and the power consumption of the pump decrease with increasing pipe diameter and positioning pitch ΔP = f(Re) and N = f(Re) presented in the form of a dependency graph.
Concerning prognostic estimations on hazardous weather events: a road to nowhere or to home?
Authors: Kolokolov Yu , Monovskaya A 
Published: August 2022

Abstract
Changes of local climate dynamics influence on the demand of fuel-energy facilities and on the choice of priorities of the most promising technological processes of production and transportation of fuel-energy resources. The corresponding adjustment is quite inertial, so, it is a point of the long-term strategy of development of a fuel and energy complex. Meantime, manipulations of a public opinion regarding the climate change problems occurs due to an audience prefers to remain within habitual empirical considerations and to listen to bright media talkers skillfully juggling various futuristic conclusions about the climate instead of accurate-but-tedious scientific proofs demanding sufficient interdisciplinary training and careful verifications by real physical data. The paper cautions about extremely dangerous harvests of unexampled climate-related damages that are grown soon on such fruitful populist fields. The paper notes substitutions of purposes by tools and demonstrates in what extent traditional estimations on climate-related hazards can be far from the real ones because of many potentialities of local climate changes are originally latent from the scope of the dominating concept on “averaging” climate norms. The paper will be interesting to responsible researchers, practitioners and citizenry oriented to efficient work to hold back from the transition towards the destructive-for-human-activities novel global climate.
Method for determining the sizes of structural elements and semi-empirical formula of thermal characteristics of solar dryers
Authors: Mirzaev Sh , Kodirov J , Khamraev S I 
Published: August 2022

Abstract
By choosing the initial dimensions of flat solar collectors, and by measuring the temperature of the incoming and outgoing air from the collector, it is possible to determine the linear dimensions of the drying cabinet attached to the collector. It is also possible to establish the basic semi-empirical formulas for determining the thermal characteristics of solar dryers. This calculation method was applied to design and build a study of an indirect solar dryer with natural air convection for drying apricots.
Experience in the operation of the Heavy Residue Conversion Complex (HRCC) based on VCC technology
Authors: Shigabutdinov A K , Presnyakov V V , Idrisov M R , Novikov M A , Hramov A A , Urazaikin A S 
Published: August 2022

Abstract
The article presents a comparative assessment of various processes of demetallization of heavy petroleum feedstock (HPF). By the example of TAIF-NK JSC, which operates a slurry hydrocracking unit based on VCC process, the possibility of mastering secondary processes aimed at deepening oil refining is shown.
Geophysical surveys as a tool for geotechnical monitoring of disturbed land reclamation
Authors: Burlutsky S B 
Published: August 2022

Abstract
The article is devoted to the issues of controlling the reclamation of disturbed lands after the end of field development. It is proved that duration of transformation processes of the geological environment after a mine recultivation stage determines the necessity of control of the changes including the ones carried out by means of geophysical investigations. The way methods of engineering geophysics increase reliability of information about the state of stability of recultivated areas by the example of slope structures is shown. Proposals for the synthesis of geophysical and engineering-geological information in the framework of geotechnical monitoring of disturbed land reclamation are formulated with regard to the findings of the study.
Experimental study of heliothermal processing of municipal solid waste based on solar energy
Authors: Kodirov I N , Toshmamatov B M , Aliyarova L A , Shomuratova S M , Chorieva S 
Published: August 2022

Abstract
The article examines the sources of solid waste generation, their impact on the environment and human health. The morphological composition of municipal solid waste (MSW) and the factors influencing the dynamics of their change were analyzed. Based on the results of the study, the physical and thermal parameters of solid waste- ρ, φ were determined and the elemental composition and heat of combustion of solid waste were analyzed. It was found that the physical properties of MSW and the morphological composition of MSW depend on the seasons and other conditions. An energy balance diagram for heliothermal processing of solid household waste with different morphological compositions in a solar device for thermal treatment of solid waste was calculated and it was found that the share of solar energy for thermal processing of solid household waste was 78%. As a result of the thermal processing of organic compounds, which formed the morphological composition of the MSW, it was found that it is possible to obtain alternative fuels and produce thermal energy and electricity in the traditional way.
Environmental foundations of oil and gas production in the Russian Federation
Authors: Zhichkina L , Zhichkin K , Sharipov F F , Takhumova O V , Perfilyev A A , Temnyshov I A 
Published: August 2022

AbstractThe production of fossil fuels is associated with a significant burden on the environment. However, comparing the production of oil and gas with the extraction of other types of minerals, it can be seen that with significantly larger production volumes, the environmental impact is lower here. The purpose of the research is to study the impact of oil and gas production in Russia on the environment in comparison with the industry average situation. To do this, the following tasks are expected to be performed: - identifying the dynamics of the production of fuel resources in Russia in 2017-2020; - determination of indicators of environmental pollution and their comparison with industry averages; - calculation of current costs and investments in fixed assets for environmental protection. In this, first of all, a significant role is played by the features of the mining object, the technologies used and the need to maintain the status of an environmentally friendly industry due to the high share of exports. The main source of pollution is air emissions (hydrocarbons (including volatile organic compounds) - 44.6%, carbon monoxide - 36.3%, solids, sulfur dioxide, nitrogen oxides). Awareness of this problem is also manifested in the structure of investments in environmental protection. Their share in the protection of atmospheric air does not fall below 59% of the total amount of environmental investments.
On the issue of wastewater treatment with an organomineral sorbent obtained by electroplasmic processing of coal flotation tailings
Authors: Kondratenko A S , Buyantuev S L 
Published: August 2022

Abstract
The article considers the technology of obtaining organomineral sorbents with a highly developed porous structure from the waste of coal enrichment – carbon flotation tailings. The synthesis of sorbents was carried out using electric arc plasma with the development of a technique for obtaining combined sorbents used for wastewater treatment. The article presents data on the study of functional groups of coal-sludge raw materials to establish the composition and structure of the surface layer with the identification of the nature of surface compounds. The article also discusses a series of laboratory and industrial tests of the sorption-filtering properties of the obtained organomineral sorbents in wastewater treatment and water treatment.
Method for determining the optimal value of the specific heat capacity and temperature regime of a short-term heat accumulator of passive solar heating systems with a flat reflector of radiation
Authors: Dusyarov A S , Sh Ergashev U , Kholmanova O P 
Published: August 2022

Abstract
The article presents the results of the analysis and generalization of the experience of operating residential facilities with solar heating systems, even a slight accumulation of the daytime excess heat of solar radiation is determined, which can significantly increase the replacement coefficient of the heat load for heating the systems under consideration. An unjustified increase in the capacity of the heat accumulator has been determined that does not give a noticeable increase in the replacement coefficient for the heat load of the system. Studied and developed new and improved existing insolation passive solar heating systems. The article shows the results of the analysis and operation of residential buildings with solar systems, it is determined that a slight accumulation of daily excess heat of solar radiation can significantly increase the replacement coefficient for the heat load on the heating of the systems under consideration.
Digitalization of electrical systems and networks on the example of a digital substation
Authors: Krasovskaya O A , Xueyin C , Ibragimova A V , Bowen M , Nan Z 
Published: August 2022

Abstract
The article analyzes modern digital technologies in the energy industry on the example of digital substations. The basic principles and advantages of digital technologies are presented, and generally accepted principles are formulated. It is shown that event extraction and intelligent information processing are the necessary conditions for digitalization of the energy industry. Digital transformation is the introduction of modern technologies into the business processes of an enterprise, which implies fundamental changes in approaches to management, corporate culture, and external communications. Digitalization, Industry 4.0 and the Internet of Things can be called the components of digital transformation in the energy sector.
Modeling and calculation of the thermal balance of a pyrolysis plant for the production of alternative fuels from biomass
Authors: Mamatkulova S G , Uzakov G N 
Published: August 2022

Abstract
In this article, in order to determine the consumption of thermal energy for biomass processing, modeling and calculation of the thermal balance of a pyrolysis plant are performed. Based on these equations, the calculation of parameters such as the thermal balance for a tubular (cylindrical shape) bioreactor, the heat used, the efficiency of the tubular bioreactor, the exergy of the source fuel, the exergetic efficiency of the bioreactor, the loss of exergy to the environment, the heat transfer coefficient, etc. The heat balance calculation software is developed using the Java programming language. In addition, the article provides a comparative analysis of the technical and energy characteristics of bioenergy plants, which shows that the energy intensity of biomass processing in existing plants reaches up to 50-60% in the total heat balance
Improving the reliability of power supply facilities in the agro-industrial sector
Authors: Shatrov A F , Gaitova T B , Stushkina N A , Leshtayev O V , Sergeeva N A 
Published: August 2022

Abstract
This article presents a system for monitoring and diagnosing the performance of operating equipment, in particular power transformers. Since power transformers are the main element of an electrical installation, the reliability of the power supply system depends on their technical state (TS). In our country one of the promising systems for monitoring and diagnostics is Transformer Diagnostics Monitor. The authors have considered the algorithm of this monitoring system and the possibility of its application in digital substations (DSs). Implementation of Transformer Diagnostics Monitor in the automatic control system of a substation prevents electrical equipment from failing, reducing the economic damage from power shortage.