bluuebunny/crossref_metadata_2025 huggingface dataset:
THE USE OF AUDIO TRIMMER AS AN ONLINE APPLICATION TO IMPROVE STUDENTS' ABILITY IN ENGLISH LISTENING CLASS
Authors: Herlina Rina , Rachmawati Etika , Sugiarto Bambang Ruby
Published: September 2022

This study focuses on the use of an online application-based Audio Trimmer in learning Listening in the English study program. The aim is to find out how the lecturer applies this Audio Trimmer application to Listening class and to find out the level of student satisfaction with the use of Audio Trimmer in Listening learning. Audio Trimmer is an online application that can adjust the audio tempo. So, no matter how difficult listening is, it will be resolved by using this application. Audio Trimmer has indeed been used as a learning medium in the Listening course for two semesters and there are indicators of student satisfaction with the use of the application. Therefore, this research is qualitatively designed with a case study approach with the research subject being all students from two listening classes, namely Extensive Listening and Academic Listening, and the data collection was obtained from student questionnaires in the form of a Likert scale questionnaire in the form of ten statements, class observation, and documentation of student achievements in listening courses. Then the research analysis includes data reduction, data display, and data verification. There are two findings from this study. First, the audio trimmer is used in listening courses at the whilst-activity and post-activity stages. Second, the student's perception shows that the audio trimmer is very supportive of listening learning. In conclusion, the audio trimmer in learning listening is very useful and of course highly recommended for English learners who will listen to English audio. Keywords: Audio Trimmer, online application, Listening
TECHNICAL AND ECONOMIC INDICATORS OF THE USE OF LIQUEFIED NATURAL GAS IN ROAD TRANSPORT
Authors:   Orenburg State University, Orenburg, Russia, Dryuchin D. A. , Gorbachev S. V. ,   Orenburg State University, Orenburg, Russia
Published: September 2022

Road transport plays an important role in the life of modern society, satisfying the transport needs of almost all sectors of the economy and the population. Mass motorization has led to a number of problems, the severity of which is increasing every day. The most urgent problems are caused by the negative impact of motor transport on the environment and the problems associated with the release of greenhouse gasses that lead to climate change on a planetary scale. According to many experts, one of the most difficult and one of the most promising methods to reduce the severity of these problems is the use of liquefied natural gas as an automobile fuel. Scientific and applied developments in this direction are largely innovative in nature. Assessment of technical and economic indicators of their practical implementation will determine the area of effective application and identify key consumers of this fuel and energy scheme. The purpose of the study is to improve the efficiency of the operation of motor vehicles based on the results of the analysis of technical and economic indicators of using liquefied gas as an automobile fuel. The achievement of the designated goal is ensured by solving such tasks as analysis of technological and technical and economic parameters of the use of liquefied methane; development of an algorithm for conducting technical and economic analysis, formalization of input data and parameters; testing of the developed algorithm in practice, obtaining the results of technical and economic analysis; generalization of the results obtained, formulation of conclusions and practical recommendations. Due to the lack of accumulated experience in the practical operation of vehicles using liquefied methane, the methods of mathematical modeling of the object of study and multi-criteria analysis conducted with respect to the data obtained from the results of modeling are applied in the work. The main result of the study is an established multidimensional domain determined by a combination of key parameters such as fuel cost, vehicle cost, its annual mileage and other parameters. These multidimensional areas constitute the scientific novelty of the results of the performed research. The overlay of the identified multidimensional area on the area formed on the basis of the analysis of the structural parameters of the regional fleet of vehicles allows you to identify key consumers and generate the data necessary to determine the infrastructure parameters that ensure the implementation of the technology in question. One of the promising areas of further research within the framework of the designated topic is the development of a methodology for the formation of infrastructure parameters that ensure the effective use of liquefied methane as an automobile fuel.
THE CONCEPT OF «CULTURAL CODE»: LEVELS OF MEANING
Authors:   Ural Federal University named after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia, Gudova M. Yu. , Yuan M. ,   Ural Federal University named after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia
Published: September 2022

The article presents a philosophical conceptual analysis of the concept “cultural code” in the works of Y. M. Lotman and other researchers. The aim of the article is to identify the levels of meaning of the concept “cultural code” and their consistent description. The authors substantiate the use of the conceptual analysis developed by Yu. S. Stepanov (description of etymology and structure of the concept) and L. G. Babenko (structuring of the concept by revealing nuclear, intermediate and peripheral meanings) as a research methodology. Authors show that the nuclear meaning of a concept coincides with the universal-philosophical meaning of the same name concept, therefore techniques of the conceptual analysis can be used both by scientists-philologists at drawing up dictionaries of concepts, and at the analysis of the phenomena of culture expressed in this or that concept, by philosophers of culture and culturologists. In the methodology of conceptual analysis performed meaningful differentiation of the concept “cultural code” in the works of Y. M. Lotman, the values of the concept at different levels of generalization are explicated. The authors of the article highlighted the nuclear universal-semiotic meaning of the concept “cultural code”, understood as a sign system, which most corresponds to the philosophy of sign and sign systems in the understanding of the phenomenon. Then the intermediate meaning of the concept, characteristic for the philosophy of culture, and including such meanings as cultural matrix and cultural tradition is defined, which helps to form ideas about a special type of culture and to carry out typology of cultures based on dominant cultural codes. After that the peripheral, applied meanings of the concept, elaborated in social psychology – cultural archetypes, philology – linguistic meaning-forming structures of the text, media-communication and other humanities sciences are described. The authors of the article conclude that the values of the concept “cultural code” are historically formed and changeable in time, expanded by the increment of knowledge in the applied sciences, in the philosophical sciences determine the order of analysis of the phenomenon “cultural code” from the level of the sign system to cultural tradition and then semantic structures of the text in a particular culture.
PARAAUTOCHTONNY BITUMENS IN THE VENDIAN KHATYSPYT FORMATION ON THE OLENEK UPLIFT, NORTHEASTERN SIBERIA
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Melnik D. S. ,   Novosibirsk State University
Published: September 2022

The large collection of the Khatyspyt Formation samples from previously unexplored Vendian sections on the Olenek Uplift has been studied. The molecular analysis of the saturated hydrocarbons allowed to diagnose biodegraded bitumens. It was confirmed that the Khatyspyt organic matter realised its generative potential, traces of primary migration are found in the rocks. The result obtained suggests that not only source rocks can be discovered throughout the Khatyspyt Formation can be, but also naphtide-containing rocks.
ISOTOPIC COMPOSITION OF GROUNDWATER IN OIL AND GAS DEPOSITS IN THE CENTRAL PART OF THE TRANS-URAL MEGAMONOCLISE
Authors:   Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Pyrayev A. N. , Maksimova A. A. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk
Published: September 2022

The article presents the first results of complex isotope-hydrogeochemical studies of reservoir waters of the Upper Jurassic deposits of the central regions of the Zaural megamonoclysis. It was shown that most waters have a narrow distribution of oxygen and hy-drogen isotopes (δD from 103,2 to –85,6 % and δ18O from –15,4 to –12,9 %). Some of them have pronounced excursions on the isotopic composition, which indicates a difference in their genesis: from condensate to mixed with ancient infiltrogenic. The isotopic composition of car-bon of water-dissolved carbon dioxide (δ13СDIC from –41,6 to –16,3 %) indicates its biogenic origin and the possibility of interstratal flows from overlying horizons.
RECONSTRUCTIONS OF SEDIMENTATION CONDITIONS OF THE BAIOSBAT SEDIMENTS IN THE WESTERN PART OF THE YENISEI-KHATANGA NGO AND ADJACENT TERRITORIES
Authors:   Siberian Research Institute of Geology, Geophysics and Mineral Raw Materials, Novosibirsk, A. A. Grishina , V. V. Sapjanik ,   Siberian Research Institute of Geology, Geophysics and Mineral Raw Materials, Novosibirsk, T. N. Toropova ,   Siberian Research Institute of Geology, Geophysics and Mineral Raw Materials, Novosibirsk
Published: September 2022

In this paper, the reconstruction of sedimentation conditions of the Baiosbat sediments of the western part of the Yenisei-Khatanga NGO is considered as a potential model for the formation of the Malyshev oil and gas prospective system.
NEW DATA ON THE ISOTOPIC COMPOSITION OF BRINES OF OIL AND GAS DEPOSITS OF THE SIBERIAN PLATFORM
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Chernykh A. V. , Pyrayev A. N. ,   Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Dultsev F. F. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk
Published: September 2022

The new isotope-geochemical data on the Siberian platform supersaturated brines of a wide stratigraphic range (from Riphean to Ordovician) are presented. There is a wide range of oxygen and hydrogen stable isotope composition in the studied brines: from –133 to –17,5 % for δD and from –17,0 to –2,5 % for δ18O. The δD and δ18O values point on the sedimentation-metamorphic genesis of the brines. The carbon isotope composition of the DIC in brines range from –31 to +12,7 %. It is supposed that DIC has the biogenic (bacterial) origin. The youngest brine DIC has the heaviest carbon isotope composition whereas the oldest brine DIC has the biggest concentration of 12C. The strontium ratios of the studied brines divide them into two groups: with 87Sr/86Sr ratios, close to those of the modern ocean waters, and brines with 87Sr/86Sr values significantly exceeding modern ocean strontium ratios. It is assumed that the burial of the brines of the second group took place in the presence of clastic material of the continental crust, with a high content of radioactive 87Rb.
MODELING OF A METHOD FOR DETERMINING THE CONTENT OF URANIUM AND POTASSIUM THORIUM IN A ROCK BY PASSIVE GAMMA-SPECTROMETRY
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Belousov A. A. , Titov B. G. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Published: September 2022

The present work is devoted to modeling the determination of the content of uranium and potassium thorium in the rock by the method of passive gamma-spectrometry used in radiometric surveys when searching for hydrocarbon deposits.
SEISMIC-GEOLOGICAL CHARACTERISTICS AND OIL AND GAS POTENTIAL OF CRETACEOUS SEDIMENTS OF VANKOR-TAGUL OIL AND GAS ACCUMULATION ZONE
Authors:   Novosibirsk State University, Oshorova E. M. , Aiunova D. V. ,   Novosibirsk State University,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk
Published: September 2022

The present work deals with seismogeological characteristics and analysis of tec-tonic history of Vankor-Tagul oil and gas accumulation zone. All investigations were based on the complex interpretation of 2- and 3-D seismic, log and deep drilling data. In this work the analysis of structural maps and isopach maps were realized. As a result structural and tectonic characteristics of Vankor oil and gas accumulation zone were carried out and the history of tectonic development of this region was analyzed.
GEOLOGICAL STRUCTURE OF DEPOSITS OF CHKALOVSKOYE FIELD AND ADJACENT AREAS
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Tatevosyan L. S. ,   Novosibirsk State University
Published: September 2022

This work is devoted to the study of the structure of the oil and gas bearing horizon in the zone of Paleozoic and Mesozoic rocks contact within the Chkalovskoye field and adjacent territories with proven industrial oil and gas content.
IDENTIFICATION OF PROSPECTS IN THE BAZHENOV FM IN YANAR USING GEOLOGICAL AND GEOPHYSICAL CRITERIA
Authors:   ", Kuznetcova M. I. ,   Gazprom VNIIGAZ",   LLC, Tyumen
Published: September 2022

Within the YANAR 6 geological and geophysical criteria were analyzed. These factors were applied for indentification of 10 prospects in the Bazhenov Fm within the studied area.
FLOW METER OF MINERALIZATION FOR AQUEOUS SOLUTIONS
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Sokolov P. A.
Published: September 2022

The paper presents the elements of the development of the hardware and software complex «Flow meter of mineralization of aqueous solutions», designed for the rapid assess-ment of salinity of solutions directly in metal pipelines, with a permanent installation of a two-electrode sensor in an explosive zone, at pressures up to 160 atm. and with side walls of the measuring cell made of steel.
GEOECOLOGICAL FORECAST FOR THE OPERATION OF A DEEP DISPOSAL SITE FOR LIQUID RADIOACTIVE WASTE
Authors:   Federal State Unitary Enterprise «National operator for radioactive waste management» the branch «Severskiy», Seversk, Kokorev O. N. , Kesler A. G. ,   Seversk Technological Institute National Research Nuclear University "MEPHI", Istomin A. D. ,   Seversk Technological Institute National Research Nuclear University "MEPHI", Noskov M. D. ,   Seversk Technological Institute National Research Nuclear University "MEPHI", Cheglokov A. A. ,   Seversk Technological Institute National Research Nuclear University "MEPHI"
Published: September 2022

This work of a specialized information support system for the management of a deep disposal site for liquid radioactive waste is presented. The system consists of geo-information, technological-information, geotechnological modeling and expert-analytical modules. The application of the information support system to improve the safety of deep disposal site of liquid radioactive waste is considered.
TESTING THE ALGORITHM OF SURFACE-CONSISTENT COMPENSATION ON SEISMIC AMPLITUDES
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Kushnarev R. S. , Goreyavchev N. A. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Mitrofanov G. M. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Published: September 2022

This work is concerned with the algorithm of surface-consistent compensation on seismic data. The algorithm allows you to determine and correct variations in the seismic signal associated with near-surface heterogeneity. Near-surface heterogeneity complicates the conditions of seismic excitation and reception of the signal. We created the synthetic three-dimension data to test the algorithm. The synthetic data includes anomalies of near-surface section has a volume of 10,5 million observations.
PROPAGATION OF AN ELECTROMAGNETIC FIELD IN AN ANISOTROPIC LAYERED MEDIUM
Authors:   Institute of Petroleum Geology and Geophysics SB RAS, Shtanko E. I.
Published: September 2022

The electromagnetic field formation at kHz frequencies when passing through a layered anisotropic medium with tensor values of electrical conductivity was considered. In one series of numerical experiments, the field is excited by an electromagnetic field source distributed along with one of the boundaries of the computational domain. In another, a field source is an inclined loop. This work allows one to estimate the behavior of the components of the electric field E at the interface between two anisotropic media, as well as an isotropic and anisotropic medium in the frequency range.
PETROLEUM FORMATION HISTORY OF THE PERMIAN COAL-BEARING ROCK IN THE VILYUI HEMISYNECLISE (ACCORDING TO THE BASIN MODELING RESULTS)
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Kosmacheva A. Yu. , Fedorovich M. O. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Published: September 2022

The work is devoted to the petroleum system modeling in the Vilyui hemisyneclise located in the Republic of Sakha (Yakutia). The study identifies the maturity and generation history of organic matter in the Permian coal-bearing rock, compaction history of the seals and areas of prospective hydrocarbon deposits of the Lower Jurassic, Lower Triassic, and Upper Permian rocks.
PVA-BASED DISPERSE SYSTEM PROMISING IN GAS HYDRATE TECHNOLOGIES FOR CAPTURING ASSOCIATED PETROLEUM GAS
Authors:   Institute of the Earth's Cryosphere Tyumen Scientific Center SB RAS, Tyumen, Pletneva K. A. ,   Tyumen State University, Kibkalo A. A. ,   Institute of the Earth's Cryosphere Tyumen Scientific Center SB RAS, Tyumen,   Tyumen State University, Molokitina N. S. ,   Institute of the Earth's Cryosphere Tyumen Scientific Center SB RAS, Tyumen,   Tyumen State University
Published: September 2022

The present work is devoted to the analysis of the influence of the dispersion of experimental samples and the molecular weight of the PVA used on the process of methane hydrate conversion in frozen powdered PVA solutions.
FEATURES OF THE STRUCTURE AND DYNAMICS OF THE TAX BURDEN OF THE OIL-PRODUCING REGIONS OF RUSSIA
Authors:   Novosibirsk State University, Basova S. A.
Published: September 2022

The present work is devoted to the analysis of the assessment of the impact of tax incentives provided by the state on stimulating the production of mining regions of the Russian Federation. The theoretical foundations and classifications of mining regions in relation to tax expenditures are analyzed. The interrelation of the features of oil production with the provision of benefits to regions is studied using the cluster analysis method. The "fairness" of the mineral extraction tax benefits and the impact of tax expenditures on the extraction of regions and the increase in budget revenues are assessed.
THE IMPACT OF FOREIGN DIRECT INVESTMENT ON THE RUSSIAN OIL AND GAS COMPLEX AND ON THE RUSSIAN ECONOMY IN GENERAL
Authors:   Novosibirsk State University, Vorobyeva E. Yu.
Published: September 2022

This work is devoted to the analysis of the influence of the degree of dependence of the indicators of the oil and gas complex on the inflow of foreign direct investment, determining the importance of foreign investment for the Russian economy in general.
ANALYSIS OF THE STATE AND ALTERNATIVES OF GASIFICATION OF THE EASTERN REGIONS OF THE RUSSIAN FEDERATION
Authors:   Institute of Economic Forecasting, Moscow, Gaivoronskaya M. S.
Published: September 2022

This work is devoted to the analysis of approaches to gasification of the eastern regions of the country, most of which are not suitable for the traditional method of gasification due to the underdevelopment of the main gas pipelines. Variants of gas supply to different re-gions of the eastern part of the country are being considered. Assumptions are put forward about the most appropriate strategy for gasification implementation in such regions.
MODALITIES FOR THE OPERATION OF SMALL OIL COMPANIES IN RUSSIA
Authors:   Novosibirsk State University, Gradoboeva V. L.
Published: September 2022

This work is devoted to the analysis of small business potential in the oil industry. The market concentration of the oil industry of Russia in 2012–2019 was analyzed. In addition, the problems and prospects of small oil companies are discussed. Despite the declining market concentration of the oil industry, additional government regulation and support for small com-panies are needed.
IMPACT OF THE TAX BURDEN ON CARBON DIOXIDE EMISSIONS FROM COMBUSTION OF FOSSIL FUELS IN THE COUNTRIES OF THE WORLD
Authors:   Novosibirsk State University, Krutilina A. D.
Published: September 2022

This work is devoted to the analysis of the place and role of the direct and indirect instruments of influence on the reduction of greenhouse gas emissions from the combustion of fossil fuels, the experience of foreign countries on the introduction of one or another instrument is considered, as well as the current situation with the regulation of emissions in Russia and in the world is considered.
TRANSFORMATION PROCESSES OF THE WORLD FUEL AND ENERGY BALANCE IN THE CONTEXT OF GROWING INTERREGIONAL COMPETITION
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Nemov V. Yu.
Published: September 2022

This paper analyzes the impact of an increase in US oil production on the world market and the effectiveness of OPEC + deals during a sharp drop in oil prices, and considers the impact on Russia. Because of the work, an approach was made to describe the transformation processes of the world fuel and energy balance in the context of growing interregional competition.
MEASURES TO INCREASE THE LEVEL OF UTILIZATION OF ASSOCIATED PETROLEUM GAS IN RUSSIA
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Provornaya I. V. , Chebotareva A. V. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Published: September 2022

This paper analyzes the methodological approaches to the selection of an effective technology for the utilization of associated petroleum gas. The structure of APG utilization directions in Russia in 2020 is shown. It is revealed that the volume of APG flaring is about 17 %. Measures are proposed that could increase the level of rational use of APG in Russia.
STRATIGRAPHY AND ORGANIC GEOCHEMISTRY OF THE LOWER JURASSIC OF THE EASTERN PART OF THE ANABAR-LENA REGIONAL TROUGH (KELIMAR RIVER BASIN)
Authors:   Novosibirsk State University, Zlobina A. V.
Published: September 2022

This work is devoted to the stratigraphy and organic geochemistry of the Lower Jurassic of the eastern part of the Anabar-Lena regional trough. The main sections of the Lower Jurassic of the Kelimar river basin were reconstructed. The data of the following geochemical studies of rocks are presented: pyrolytic, according to the content of Corg, according to the distribution of the carbon isotope C13 and biomarkers.
LEGISLATIVE AND REGULATORY INCENTIVES FOR DEVELOPMENT HYDROGEN ENERGY IN RUSSIA
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Filimonova I. V. , Dochkina D. D. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Published: September 2022

Since the world is striving to find «clean» energy, the use of renewable energy sources for the production of hydrogen is an urgent research task. This paper examines the development of hydrogen energy in the world, as well as its incentives for development in Rus-sia. The physical-chemistry of hydrogen and its production methods are described in detail. The article also considers the legislative and regulatory frameworks developed by the world com-munity to increase the competitiveness of renewable energy, stimulating the transition to more « clean» types of energy. Attention is paid to the current global situation of hydrogen consump-tion, as well as projects for the development of hydrogen energy.
BIOSTRATIGRAPHY OF THE SINSKAYA AND KUTORGINA FORMATIONS FROM LOWER CAMBRIAN OF THE NORTHWEST OF THE ALDAN ANTECLISE
Authors:   Novosibirsk State University, Paschenko A. A.
Published: September 2022

This work is devoted to the refinement of the biostratigraphic division and lateral distribution of the Sinskaya and Kutorgina formations on the northwestern slope of the Aldan anteclise. These strata are characterized by an increased content of organic matter in comparison with the underlying and overlapping sediments. This fact allows us to consider these formations as potentially oil-producing strata and makes the research data relevant.
GEOLOGY STRUCTURE AND PROSPECTS OF OIL AND GAS CONTENT OF THE JURASSIC, TRIASSIC AND PERMIAN DEPOSITS OF THE SOUTHERN SIDE OF THE VILYUISKAYA SYNECLISE
Authors:   Siberian scientific research institute of geology, geophysics and mineral raw material, Novosibirsk, Takhvatulin M. M. , Maslennikov M. A. ,   Siberian scientific research institute of geology, geophysics and mineral raw material, Novosibirsk
Published: September 2022

This work is devoted to analysis of geological aspects of the Jurassic, Triassic and Permian deposits of the southern side of the Vilyuskaya syneclise, and the assessment of the perspectives for their oil and gas potential, based on well logging data and seismic prospecting.
GEOLOGICAL AND GEOPHYSICAL MODEL OF THE NORTHERN PART OF THE EAST SIBERIAN SEA BASIN IN ORDER TO SUBSTANTIATE PROMISING OIL AND GAS REGIONS
Authors:   FSBI «VNII Okeangeologia», Saint-Petersburg, D. Z. Bagaev
Published: September 2022

The shelf of the East-Siberian Sea remains the least explored part of the Arctic region. At the same time, the geological and geophysical work performed in the last decade on oil and gas and on the problem of determining the outer boundary of the continental shelf indicate high prospects for the promising oil and gas bearing area of the De-Long rise and areas of the continental slope identified here. The main prospects are associated with zones of development of clinoform complexes and fan lobes within the continental slope and structures in the Mesozoic-Cenozoic sedimentary section on the eastern margin of the De-Long rise.
SEISMIC RAY TRACING USING ANN-BASED EIKONAL SOLVER
Authors:   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Shilov N. N. , Grubas S. I. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Duchkov A. A. ,   Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk
Published: September 2022

In this work we investigate the potential of seismic ray tracing based on the seismic travel-time field (i.e., solution of the eikonal equation) computed using artificial neural networks and conventional finite-differences. In a series of numerical tests, we show that the network-based eikonal solver requires considerably less dense computational grid than the finite-difference method.
Quality characteristics of Korean style traditional Tarak ice cream
Authors:   The Table and Food Coordinate Society of Korea, Kim yang-suk , kwon Oh-gyun , Jeong Tae-Chal
Published: September 2022

The objective of this research on the qualitative characteristics of tarak ice cream is to raise interests in Korean dessert among people, improve the general perception of traditional foods, and gradually generate high added values in the end. Sensory optimization was conducted by adjusting the content and ratio of the milk base and tarak base, and based on the results, the optimal condition for tarak ice cream manufacturing was presented. To find the optimal mixing ratio of tarak ice cream, the milk base and tarak base were selected as two independent variables that affect qualitative characteristics of the ice cream. Additionally, sensory assessment factors —nuttiness, flavor, sweetness, and texture—were examined to determine the optimal recipe. Among physicochemical properties of the ice cream, pH, Brix and chromaticity were measured, which showed the higher content of milk base increased pH while the higher content of tarak base lowered pH. With regard to lightness, it increased as more milk base was added and decreased in the case of tarak The red and yellow chromaticity decreased to small degree as the quantity of the milk base increased but increased as the quantity of the tarak base increased. This study is expected to help lay the foundation for further research on tarak and ice cream in Korea, specifically for research on dessert items that combine traditional and modern elements.
Development of a Mg/O ReaxFF Potential to describe the Passivation Processes in Magnesium-Ion Batteries
Authors: Fiesinger Florian , Gaissmaier Daniel , van den Borg Matthias , Bessner Julian , van Duin Adri C. T. , Jacob Timo
Published: September 2022

One of the key challenges preventing the breakthrough of magnesium-ion batteries (MIB) is the formation of a passivating boundary layer at the Mg anode. To describe the initial steps of Mg anode degradation by O2 impurities, we have developed a Mg/O ReaxFF reactive force field description capable of accurately modeling the bulk, surface, adsorption, and diffusion properties of both metallic Mg and the salt MgO. We show that O2 immediately dissociates upon first contact with the Mg anode (modeled as Mg(0001), Mg(10m10)A, and Mg(10m11)), heating the surface to several 1000 K. The high temperature assists the further oxidation and forms a rocksalt interphase intersected by several grain boundaries. Among the Mg surface terminations, Mg(10m10)A is the most reactive, forming an MgO layer with a thickness of up to 25 Å. We also demonstrate the recrystallization of an amorphous MgO particle, which is obtained performing grand-canonical Monte Carlo simulations, into the rocksalt structure by thermal annealing at elevated temperatures. Our force field can be used to model the ongoing reactions in Mg-air batteries and constitutes an important step towards modeling the solid--electrolyte interface formation at the Mg anode.
Temperature sensitive copolymers as a model system for understanding the physical basis of nonequilibrium assembly
Authors: Chittari Supraja , Obermeyer Allie , Knight Abigail
Published: September 2022

Both natural biomaterials and synthetic materials benefit from complex energy landscapes that provide the foundation for structure-function relationships and environmental sensitivity. Understanding these nonequilibrium dynamics is important for the development of design principles to harness this behavior. Using a model system of poly(ethylene glycol) methacrylate-based lower critical solution temperature (LCST) copolymers, we explored the impact of composition, path, and macromolecular crowding effects on nonequilibrium thermal hysteretic behavior. Through turbidimetry analysis of non-superimposable heat-cool cycles, we observe that LCST copolymers show clear hysteresis that varies as a function of pendent side chain length and hydrophobicity. Hysteresis is further impacted by the temperature ramp rate, as insoluble states can be kinetically trapped under optimized temperature protocols. Finally, the use of common crowding agents shows that excluded volume effects diminish the hysteresis behavior. This systematic study brings to light practical design principles towards understanding and harnessing out-of-equilibrium effects in synthetic soft materials.
F-tag induced acyl shift in the photochemical cyclization of o-alkynylated N-alkyl-N-acylamides to indoles
Authors: Jung Nicole , Bräse Stefan , Simek Tosino Helena , Jung Andre , Fuhr Olaf , Muhle-Goll Claudia
Published: September 2022

A photochemical cyclization of F-tagged, o-alkynylated N-alkylamides to indoles catalyzed by the [Ir(dtbbpy)(ppy)2]PF6 is presented. This straightforward and efficient reaction involves an intramolecular rearrangement due to the presence of fluorine in the acyl moiety and is the first example of photochemically induced 1,3-acyl shift in the cyclization towards 3-acylidoles. A four-step reaction sequence to the desired derivatives including the photoreaction as a key step has been developed and optimized. The compatibility of differently substituted F-tagged precursors with the photocyclization step was investigated and the robustness of this step towards modifications could be shown. In total, 19 so far unknown derivatives with diverse modifications in positions N1 and C2 were synthesized in very good yields and fully characterized.
Solid-state NMR spectra of protons and quadrupolar nuclei at 28.2 T: resolv-ing signatures of surface sites with fast magic angle spinning
Authors: Berkson Zachariah , Björgvinsdóttir Snædís , Yakimov Alexander , Gioffrè Domenico , Korzyński Maciej , Barnes Alexander , Copéret Christophe
Published: September 2022

Advances in solid-state nuclear magnetic resonance (NMR) methods and hardware offer expanding op-portunities for analysis of materials, interfaces, and surfaces. Here, we demonstrate the application of a very high magnetic field strength of 28.2 T and fast magic-angle-spinning rates (MAS, >40 kHz) to sur-face species relevant to catalysis. Specifically, we present as case studies the 1D and 2D solid-state NMR spectra of important catalyst and support materials, ranging from a well-defined silica-supported organometallic catalyst to dehydroxylated γ-alumina and zeolite solid acids. The high field and fast-MAS measurement conditions substantially improve spectral resolution and narrow NMR signals, which is particularly beneficial for solid-state 1D and 2D NMR analysis of 1H and quadrupolar nuclei such as 27Al at surfaces.
Enhancing the matrix-fiber interface with a surfactant leads to improved performance properties of 3D printed composite materials containing cellulose nanofibrils
Authors: Battisto Evan , Sarsfield Shea , Lele Saurabh , Williams Teague , Catchmark Jeffrey , Chmely Stephen
Published: September 2022

Cellulose nanofibrils (CNFs) exhibit characteristics that make them a desirable addition to new composite materials. CNFs are usable in a wide variety of applications such as coatings, personal and healthcare products, packaging, and advanced structural materials. They can also help overcome some performance issues with objects 3D printed by stereolithography (SLA) including dimensional instability and poor mechanical properties. However, CNFs are hydrophilic, making their dispersion in hydrophobic resins common to SLA difficult. Therefore, improvement of performance properties will not be fully realized. In this work, we treated TEMPO-oxidized CNFs (TOCNFs) with the hydrochloride salt of lauroyl arginate ethyl ester (LAE⋅HCl), a cationic surfactant, to investigate how this coating would affect the performance properties of multicomponent uncured SLA resins and subsequently printed objects. We hypothesized this coating would enhance the dispersion of the cellulose nanomaterials when compared to their uncoated counterparts, which would lead to quantifiable differences among the sample groups. We found that the viscosity of a commercial 3D printing resin (0.34 Pa·s at 30 Hz) increased by nearly an order of magnitude upon addition of even 1 wt.%. uncoated TOCNFs (2.96 Pa·s at 30 Hz). Moreover, the tensile strength (19.9(5) MPa) and modulus (0.65(5) GPa) of objects printed from the commercial resin decreased when adding 4 wt.% uncoated TOCNF (12.5(2) MPa and 0.58(8) GPa, respectively). In contrast, resins having 4 wt.% TOCNFs coated with LAE were less viscous (1.25 Pa·s at 30 Hz), and objects printed from them had enhanced tensile strength (24.7(7) MPa) and modulus (0.78(8) GPa) when compared to both the unadulterated resin and that having uncoated TOCNFs. Our findings show the general utility of using a surfactant with cellulose nanomaterials to homogenize multicomponent resins for 3D printing composite materials with enhanced performance properties.
Operational management of the bus fleet maintenance and repair system
Authors: Feklin E. V.
Published: September 2022

Introduction. Recently, due to the increase in the number of vehicles, including public transport, there is a need to streamline the system of maintenance and repair, taking into account the mass of incoming applications for these operations. A decrease in productivity may occur due to an unclear distribution of work by performers, inconsistency of their actions in time and irrational use of technological equipment. The purpose of the research is to develop a system for organizing maintenance and repair of rolling stock based on the principles of centralization and cooperation with other production structures. To achieve this goal, statistical methods, methods of the theory of random processes and queuing theory are used. The concentration of production occurs either due to the growth of the share of large enterprises in the total volume of production of the region / industry (transportation of passengers of the metropolis) or due to the growth of the size of the manufacturing enterprises themselves. The process of concentration can be argued from the standpoint of the principles of synergetics.

Materials and methods. The article discusses the operational management of the system of maintenance and repair of the bus fleet. The division of tasks of the technical service of a motor transport enterprise into four complexes is presented. Two ways of drawing up a schedule are analyzed: calendar and by actual mileage of cars. The analysis revealed the advantages and disadvantages of each of the options. The advantages and disadvantages of universal and specialized posts are analyzed, indicating ways to eliminate the identified shortcomings. The positive effect of centralization of management of the specified complexes of tasks for maintenance and repair of rolling stock is substantiated.

Results. A scheme for servicing applications for routine repairs with decentralized and centralized systems for managing the production of routine repairs of rolling stock is proposed. The basic principles of functioning of a centralized production management system are described. A general structural scheme of centralized specialized production is proposed. The structural composition of the pre-production complex is presented, with a description of each unit included in its system: a complete set group, an intermediate warehouse, a transport section, a washing and defect section, a tool section. The tasks of the operational management department and the information processing and analysis department, which are part of the control center of a centralized specialized production, are outlined.

Discussion and conclusions. The results of the study are intended for the enterprises of passenger transport. This study is an integral part of the development of a common system of centralization and cooperation of maintenance of rolling stock.
Cement and claydite dust binding compositions
Authors: Makhortov D. S. , Zagorodnyuk L. Kh. , Shapovalov N. A. , Sumskoy D. A.
Published: September 2022

Introduction. The article presents the production results for binder compositions of the optimal proportion based on Portland cement and claydite waste – claydite dust. The granulometric composition studies have been conducted, test results for binder compositions of different proportions are presented: cement – claydite dust, jointly mechanically activated in a vibrating mill. The binder compositions with a wide range of use have been developed and determined. Using the electron microscopy method, microphotographs of cement stones chips made from Portland cement and different contents of claydite dust, which have been mechanically activated in a vibrating mill, were taken. There is active overgrowth of open pores in cement stones obtained from binder compositions by neoplasms of various sizes.

After the use of claydite dust as a raw mix, the structure of the composite is compacted.

Materials and methods. ЦЕМ0 52.5N Portland cement (GOST 31108-2020) produced by ZAO Belgorodskii Cement and claydite dust, the waste of claydite dust production, were used in the work. The mechanical activation was performed by grinding in a vibrating mill. The normal density was determined using the Vic’s device according to GOST. The granulometric composition was studied using the AnalyssetteNanoTecplus device. The microstructure was studied using a high-resolution scanning electronic TESCAN MIRA 3 LMU microscope. In order to construct diffractograms, the ARL X’TRA Thermo Fisher Scientific device was used.

Results. The binding composition of the optimal proportion of claydite dust demonstrates an increase in strength characteristics, there is a compaction of the cement stone structure compared to ordinary Portland cement.

Discussion and conclusions. The use of waste from the production of claydite – claydite dust as a mineral filler of the binder composition makes it possible to save expensive Portland cement, while increasing the strength characteristics of the binder composition.
Development of e-stick for blind persons using IoT
Authors: Gopisetty Ramesh
Published: September 2022

Blind and disabled people suffer a loT to reach their destination, and there are many dangerous risks that disabled people must face. To avoid the inconvenience while walking, a smart electronic walking stick was proposed. This paper proposes a low-cost walking stick based on the latest technology, and a new implementation is intended to effectively interface with the blind. Basically, an ultrasonic sensor is implemented in a walking stick to detect obstacles in front of the blind or handicapped. If there is any obstacle, it will warn the blind person to avoid that obstacle and alert them in the form of a voice announcement. Every day in different ways to ensure people's flexible and safe movement. In this technology-driven world where people strive to live independently, this paper provides an inexpensive 3D ultrasonic stick for the blind to gain personal independence so the disabled can move from one place to another easily and safely. A portable stick is being designed and developed that detects the obstacles in the path of the blind using ultrasonic sensors. The voice alert is activated when any obstacle is detected. In addition, the flash drive is equipped with a system of Short Message Service (SMS) messages. The SMS system is used by the blind to send SMS messages to the numbers stored in the microcontroller in case of an emergency. This system has been successfully programmed with a voice announcement. Computer simulations are performed to evaluate system performance using Proteus software.
A solar powered panic alert smart bag
Authors: Mayank Veer Singh , Brij Kishore Singh , Anand Prakash Patel , Alok Singh
Published: September 2022

The smart solar bag is a system of many intelligent features and will be made in such a way that it can be used by all members of society at any age, from a teenager to an adult. Smart means intelligent, fast, self-monitoring, and report analysis, which would be enough to perform various functions for everyday use. It will be powered by solar energy, which will also make it very environmentally friendly. The ATmega 16 microcontroller will be the brain of the system, which will manage all the functions. A solar panel will be placed on the front of the bag, which will provide power to the system to perform its functions. This system will have many functions, such as a panic button for any emergency, which means that if any situation occurs, the user will press the panic button and its location will be transmitted to the contacts registered in the system using Global System for Mobile communication (GSM) technology. Secondly, this smart solar bag will have the function of a schedule alert system for teens who forget to bring copies and books for the respective day. An Organic Light Emitting Diode (OLED) screen will be placed in the front, which will display the schedule for the respective days. Thirdly, it will turn on the electronic devices, the power of which drops after use.
Comportamiento compostable y biodegradable de bioplásticos producidos con desechos agrícolas
Authors: Cortez Suarez Liliana Alexandra , Petroche Torres Daniel Joel , Camba Ramirez Walter Eddy , Mariscal Santi Walter Enrique
Published: September 2022

La reducción y reutilización de los desperdicios alimenticios es capaz de generar productos con valor agregado, por ejemplo, la obtención de ácido poliláctico (PLA) a partir del almidón de maíz, yuca o caña de azúcar, el cual cuenta con propiedades similares a las del PET, las alternativas desarrolladas en la última década ubican al bioplástico como una vía óptima para el desarrollo de recursos renovables y el aprovechamiento de las mismas. El uso de recursos como los desechos agrícolas y su biodegradabilidad en diferentes entornos permiten que estos polímeros tengan una mejor aceptación que los plásticos convencionales. los biopolímeros constituyen un sector de interés creciente en múltiples gremios industriales como el rubro alimentario, electrónico, medicina, textil, entre otros. La metodología utilizada para el presente trabajo de investigación, se enmarcada dentro de una revisión bibliográfica de tipo documental, ya que nos vamos a ocupar de temas planteados a nivel teórico como es Comportamiento compostable y biodegradable de bioplásticos producidos con desechos agrícolas. La técnica para la recolección de datos está constituida por materiales electrónicos, estos últimos como Google Académico, entre otros, apoyándose para ello en el uso de descriptores certificados y avalados por el tesauro de la UNESCO. La información aquí obtenida será revisada para su posterior análisis. Los productos bioplásticos generados de desechos agrícolas, tienen una gran importancia en el cuido del medio ambiente, por su capacidad de auto eliminarse por llamarlo de alguna manera en el tiempo, algo que no sucede en los productos fabricados por la petroquímica, sin embargo, a pesar de que están probados su biodegradabilidad, todavía falta mucho para que universalmente sean utilizados.
Economía circular como estrategias para el desarrollo sostenible en Ecuador
Authors: Mora Carpio Wendy Tamara , Manrique Pincay Rubén Bernardo , Villamar Piguave Walter Giovanny
Published: September 2022

La Economía Circular (EC) ha emergido en los últimos años como una alternativa atractiva para la gestión sostenible de los procesos de producción, distribución y consumo en las economías industrializadas, el tradicional sistema de producción basado en la extracción de los recursos, el procesamiento no amigable de materias primas para convertirlas en productos a nivel de las empresas, la utilización por parte de los consumidores y la eliminación de residuos de manera inadecuada y en la mayoría de los casos contaminantes, evidentemente no es sostenible. La metodología utilizada para el presente trabajo de investigación, se enmarcada dentro de una revisión bibliográfica de tipo documental, ya que nos vamos a ocupar de temas planteados a nivel teórico como es Economía circular como estrategias para el desarrollo sostenible en Ecuador. La técnica para la recolección de datos está constituida por materiales electrónicos, estos últimos como Google Académico, entre otros, apoyándose para ello en el uso de descriptores certificados y avalados por el tesauro de la UNESCO. La información aquí obtenida será revisada para su posterior análisis. A pesar que en Ecuador existe legislación sobre la economía circular para su desarrollo sostenible, y que hay ciertos indicadores que así lo reflejan, todavía falta mucha información y voluntad por parte de las empresas para aplicar la totalidad de los esfuerzos para llevar adelante la economía circular, muchas empresas como se observa en las estadísticas de las encuestas ambientales no conocen los tipos de desechos que botan, a su vez no hay información de los desechos que son reutilizables y que vuelven a circular en la economía ecuatoriana, aun existiendo las dos fases del Libro Blanco de Economía Circular, lo que indicaría también que no existe a profundidad un seguimiento de los lineamientos allí plasmados por parte del ministerio de ambiente, agua y transición ecológica de ecuador, que logren la concreción definitiva del país a una migración definitiva de la economía lineal a la circular.