bluuebunny/crossref_metadata_2025 huggingface dataset:
A review on electrical vehicle adaptation in India
Authors: Manikandan B. , Gudipalli Abhishek
Published: October 2022

This paper reviews the battery technology, methods of charging techniques for charging the EV's battery, factors affecting the EV adaptation, India. Many significant methods recently used in electric vehicles are explained. In India, it has taken a major step in adapting the electric vehicle employing the Faster Adoption and Manufacturing of (Hybrid &) Electric Vehicles in India (FAME) scheme a government initiative. In the forthcoming years, electrification of transportation networks is a basic one while considering the consumption of petroleum derivatives just for the 50 years. Transportation is the most important source of logistics, and people contribute significant primary emissions to global warming, so avoid this situation by focusing on zero emissions. Transportation by electric vehicle is the lone achievable answer for these issues. This paper presents the effect of quick charging on Lithium-ion batteries in EVs. The Lithiumion battery is utilized to be essential energy for electric vehicle driving objective and characterized in high volume per energy density. The plan of the battery charging station is utilized to discover the gas volume of the lithium-ion battery component from the electric vehicles. In the final, it points out the future potential research with respect to electric vehicle innovation and how to grow the charging infrastructure for EVs. Also including the developments need and improvements.
Effect of Host Size on Susceptibility of Melanotus communis (Coleoptera: Elateridae) Wireworms to Entomopathogens
Authors: Williams Livy , Cherry Ron , Shapiro-Ilan David
Published: October 2022

Wireworms, the soil-borne larvae of click beetles (Coleoptera: Elateridae), are important crop pests throughout the world. In the eastern U.S., Melanotus communis larvae attack grain, root/ tuber, and vegetable crops. Our objectives were to characterize the pathogenicity and virulence of fungal and nematode entomopathogens on M. communis wireworms, and determine if wireworm size affected virulence. Pathogens tested included five entomopathogenic nematodes, Steinernema carpocapsae (All strain), S. feltiae (SN strain), S. riobrave (355 strain), Heterorhabditis bacteriophora (VS strain), and H. indica (HiHom1 strain); and two entomopathogenic fungi, Beauveria bassiana (GHA strain) and Cordyceps javanica (WF-GA17 strain). None of the pathogens tested caused >15% mortality at 7 or 14 days post-inoculation. Mortality was highest in S. carpocapsae (All strain); the other entomopathogens did not cause higher mortality than the untreated control. Overall, smaller wireworms were more susceptible than larger wireworms. Our results suggested that M. communis wireworms have defenses that limit the ability of the entomopathogens we tested to infect the wireworms. Conceivably, other entomopathogen strains or species may be more effective. Natural populations of entomopathogens may contribute to wireworm population reduction, but further studies are warranted before entomopathogens can be used for M. communis management.
A Draft Mitogenome of Plectus murrayi
Authors: Xue Xia , Adams Byron J. , Dilman Adler R.
Published: October 2022

Plectus murrayi is a free-living microbivorous nematode endemic to Antarctic soils. Our draft assembly of its mitogenome was 15,656 bp long, containing 12 protein-coding, eight transfer RNA (tRNA), and two ribosomal RNA (rRNA) genes. Mitophylogenomic analyses extend our understanding of mitochondrial evolution in Nematoda
Early Neolithic Ceramic Complex of the Settlement of Mergen 6 in the Lower Ishim: technological aspect
Authors:   Tyumen Scientifc Centre of Siberian Branch RAS, Ilyushina Viktoria V.
Published: October 2022

The article presents the results of a study on the technologies making of Early Neolithic ceramics from the settlement of Mergen 6 – a reference site in the development of issues of the Early Neolithic in the forest-steppe zone of the Tobol-Ishim interﬂuve. Based on morphological characteristics, the researchers divided the ceramic complex of the settlement into four groups – the frst and second groups correspond to the traditions of the Boborykino and Koshkino cultures, the third group includes vessels with sculptural ornamentation as relief bands – the «relief-band» group, the fourth is represented by vessels with mixed ornamental features – «syncretic» group. The study of the ceramic collection was carried out by the author according to the method of A.A. Bobrinsky. The features of ancient potters' skills at the stages of selection of initial plastic raw materials were revealed, as well as composition of molding masses, the surface treatment of products and fring them. Based on the data obtained, the issue of the emergence of pottery technology in the region under consideration is discussed.
Ceramics of the Boborykino Appearance of Turgai
Authors:   Kostanay Regional University named after A. Baitursynova, Shevnina Irina V.
Published: October 2022

Results of the analysis of ceramics of the Boborykino appearance from the Neolithic sites of Turgai are represented in the paper. The initial raw materials and molding masses of ceramic products were studied using the technique of binocular microscopy and petrographic analysis. When analyzing the ceramic collections of the sites Bestamak, Belkaragai 1 and Sulukol 1, according to the profling of the necks, the technique of applying the ornament, a group of ceramics of the Boborykino appearance was identifed. The dishes of this group were molded from silty clays with the addition of freclay and an organic solution; in one case, talcum gruss was added. The penetration of the Boborykino groups of population into the Turgai steppes was episodic, and the groups were quite small (based on the number of artifacts found), which indicates not migration, but rather family and marriage contacts.
New Data on Bone Processing Methods in the Late Mesolithic of the Russian Federationn Plain (based on materials from the wetland Site Zamostje 2): methodological aspects of experimental traceological analysis
Authors:   Institute for the History of Material Culture, Russian Academy of Sciences, Lozovskaya Olga V. , Malyutina Anna A. ,   Institute for the History of Material Culture, Russian Academy of Sciences, Fedorova Daria N. ,   Institute for the History of Material Culture, Russian Academy of Sciences
Published: October 2022

This study is aimed to discover evolution peculiarities of bone processing techniques in the Late Mesolithic period (2nd half of VII mill. BC – beginning of VI mill. BC) based on the wetland multilayer site Zamostje 2, a reference settlement for Eastern Europe. The wellpreserved surface of organic artefacts enables authors to run an experimental traceological analysis with focus on traces of processing and use at various observation levels, which made it possible to reconstruct technical methods, general production features and specific types of work performed with ancient tools. The advantage of this study is that the results of the analysis and theoretical conclusions can be validated and verified using the same site’s materials. As a foundation for the interpretation of traces observed on the surface of bone artefacts and stone tools used in bone processing, the authors used reference traces obtained during specially conducted experiments. In the methodological context, the authors attempted to distinguish diagnostic features at the micro- and macroscopic levels of traces of bone processing in its various states (freshly frozen, freshly boiled, dry) confirmed by the description and visual data. Following the analysis, the authors succeeded in identifying parallels in the archaeological material as well as reconstructing some characteristic types of work and the context of their execution.
New Radiocarbon Dates from the Saka Time Settlements of Central Kazakhstan
Authors:   Begazy-Tasmola Research Center of History and Archaeology, Beisenov Arman Z. , Liu Yan ,   Research Center of Material Science and Archaeology Institute of Culture and Heritage, Northwestern Polytechnical University, Cao Huihui ,   14C Chronology Laboratory, College of Earth and Environmental Sciences
Published: October 2022

The features of the settlements of the Saka time in Central Kazakhstan are studied on the basis of materials from more than 70 objects that have been discovered to date. Along with the study of such important aspects as topography and planigraphy, house building, ceramic complex, determining the function of stone tools, etc., the dating of monuments using modern natural science methods is relevant. The article publishes for the frst time the results of a new series of radiocarbon analyzes that were carried out at the end of 2021 on bone samples from two settlements. A total of 7 new dates from the Tasmola settlements of Abylai and Kulzhan-I were obtained in the 14C Chronology Laboratory at Lanzhou University, China. All dates ft within the framework of the 8th – 6th centuries BC. It seems important that the upper limit of calibrated dates does not go beyond the middle of the 6th century BC. The new dates are consistent with the previously made archaeological dates of the settlements of Central Kazakhstan. According to materials of the study of the monuments of the Scythian-Saka era of Kazakhstan, Sayan-Altay, this milestone is the time of the end of the Early Scythian period in the ancient history of the steppe Eurasia. There are still not enough radiocarbon dates for the settlements of the Saka time in Central Kazakhstan. Therefore, it is planned to continue work in this direction.
Bronze Eight-Shaped Clasps as Chronological Markers of the Pyany Bor Culture
Authors:   Kazan (Volga Region) Federal University, Sattarov Ruzil R. ,   Institute of Archaeology named after A.Kh. Khalikov, Tatarstan Academy of Sciences, Kamaleev Elvir V. ,   Federal State Institution of Science Institute of Ethnological Studies of R.G. Kuzeev
Published: October 2022

The authors discuss the chronological positions of eight-shaped clasps originating from 17 burials of the Pyany Bor culture. Clasps were found in both male and female burials. There are 10 skeletons identifed as male burials, and six ones as female. It is not possible to determine the sex of person in one burial. All clasps are made of bronze. The length of the clasps varies from 1.9 to 7.6 cm. The frames of the clasps are decorated in the form of round or oval rings directly adjacent to each other. On a number of clasps there are protrusions-"pins", some of which are decorated in the form of a stylized animal head (bear?). The largest number of clasps was found in the Kipchakovo I burial mound. The authors come to the conclusion that the eight-shaped Pyany Bor clasps by themselves cannot act as chronological markers of the initial stage of the Pyany Bor culture. However, it is impossible to completely deny the dating capabilities of eight-shaped fasteners. The authors suggested that clasps have a dating value when combined with quivers containing bronze arrowheads and, possibly, with epaulet-shaped clasps of simple shapes.
Manufacturing Relations of the Tripolye Settlement-Workshop Bodaki (based on the materials of the Cucuteni–Tripolye Bugo-Prut interfluve memory)
Authors:   Institute for the History of Material Culture, Russian Academy of Sciences, Terekhina Vera V. , Skakun Natalia N. ,   Institute for the History of Material Culture, Russian Academy of Sciences
Published: October 2022

The manufacturing relations of the Tripolye settlement-workshop Bodaki, which specialized in the production of macro-blades from the high-quality Volhynian flint are researched by the authors of the paper. Thanks to the result of an analysis of the archaeological context, a technical and morphological study of flint and stone artefacts, as well as data from the geological and mineralogical sciences, a circle of sites of the developed period of the Cucuteni-Tripolye culture in the Bugo-Prut interfluve, which consumed flint products from the settlement-workshop Bodaki, was outlined. This is indicated by the absence of traces of processing of the Volhynian flint in their materials, the absolute similarity of the forms of the tools with the tools found in the Bodaki. Located in the upper reaches of the Prut, the Middle Dniester and the Middle Bug, they were quite far from the center of high-quality flint processing of the Volhynian flint. Despite this, the basis of their production complexes were sets of tools made from this raw material, while local breeds were used to a lesser extent. These data indicate a high level of organization of stone-processing production, the presence of well-established links between the Tripolye sites of the time of the BII, which made it possible to provide their economy with high-quality production equipment.
Stone and Bronze Age Materials from the Ust-Vikhlyanka Archaeological Complex (research 2021)
Authors:   Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Sciences, Lyganov Anton V. , Galimova Madina Sh. ,   Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Sciences
Published: October 2022

The results of excavations and collections of finds on surface at the Ust’-Vikhlyanka archaeological complex in 2021 are published in the paper. Caused by the ongoing destruction by the waters of the Kuibyshev reservoir in 2021, a 98 m2 excavation was investigated on the site. The average thickness of the cultural layer was 70 cm. The main layer of the archaeological complex is attributed by the authors to the Ust’-Kama culture of the final Paleolithic – early Mesolithic. Moreover, expressive macronuclei intended for the production of large blades were found in the blurred part of the complex. These finds indicate the use by the Eneolithic population of the Kama-Volga confluence area of the technology of enhanced pressure of macro blades. Another important find within the excavation was a vessel of the Atlikasy culture of the finale of the Middle Bronze Age. This is the first example of the Atlikasy culture ceramics on the left bank of the Volga below the mouth of the Kama.
Issues of Studying Early Neolithic Dwellings of the Lower and Middle Volga Region
Authors:   Samara State University of Social Sciences and Education, Vybornov Alexander A. , Stavitsky Vladimir V. ,   Penza State University
Published: October 2022

Analysis of problematic issues of studying the Late Stone Age dwellings from the Northern Caspian to the Kama forest region is made in the paper. The dwelling is considered one of the composite components of the archaeological culture. Previously, researchers focused mainly on ceramic and stone tools. The dwelling issue as a cultural indicator in the Late Stone Age remained open. The background is defined by searching for a new cognitive capacity for a comprehensive analysis of the archaeological culture. Dwelling characteristics in various landscape zones are presented. Simultaneous dwelling complexes were compared, which made it possible to identify peculiar features for each territory. A comparison was made on the basis of a broad cultural and territorial background. Characteristic features for different periods of cultural development within the same region were revealed. Dwellings design features in semi-desert, steppe, forest-steppe and forest areas were identified.
Matrix methods of product range analysis and their comparative characteristics
Authors: Petrova Anastasiya Valerevna
Published: October 2022

Implementing the key functions, any company is faced with issues related to the formation and analysis of the range of goods, products, services. Regardless of the field of activity, enterprises need to analyze each product line separately in order to make timely adjustments to the product range policy, which directly affects the economic efficiency of the enterprise as a whole. The purpose of the study is to reveal the content of matrix methods of assortment analysis. The article deals with the concepts of "assortment", "product assortment", their meaning and impact on the company's activities; matrix methods: BKG matrix; Dibb-Simkin matrix; Markon matrix. The scientific novelty lies in the author's interpretation of the comparative characteristics of these methods, summarized in a tabular form, allowing enterprises to choose the optimal method when analyzing assortment positions in real business conditions.
Investigation of an algorithm for the formation of a stock portfolio of investors using fuzzy set theory
Authors: Klimenko Dmitry Nikolaevich
Published: October 2022

The purpose of the study is to investigate the features of the algorithm for forming the stock portfolio of investors using the theory of fuzzy sets, taking into account a priori uncertain input information and market dynamics. The scientific novelty of the article lies in the application of a relatively new fuzzy-multiple apparatus and the theory of fuzzy sets to the formation of the stock portfolio of investors. From a practical point of view, the proposed fuzzy model makes it possible to predict not only the structure and expected return of a portfolio of securities, similarly to the application of the classical portfolio theory, but also to obtain the values of the lower and upper boundaries of the return on securities, which will allow the investor to form a more complete picture of the structure of the portfolio in the future. As a result, it was found that the use of classical statistical approaches for the formation of a stock portfolio of investors will not allow obtaining a reliable and accurate result, since traditional methods do not take into account the uncertainty factors of events in the stock market. To level information asymmetry and eliminate risks of uncertainty, it is advisable to apply the theory of fuzzy logic.
The return of the woman corpse in the funeral rites of the Urhobo and Isoko in historical perspective
Authors:   Department of History and International Studies, Delta State University, Abraka, Nigeria, Okpevra Uwomano Benjamin
Published: October 2022

This paper aimed at interrogating the changes and continuity in an aspect of the Funeral rites of the Urhobo and Isoko of the Niger Delta of Nigeria. It critically examine the practice of returning the corpse of the married woman to the homestead of her family rather than bury her in her husband’s homestead. This practice has over the years been questioned and interrogated and calls for scrutiny. The paper argues that social change factors and processes have introduced continuous changes in the Urhobo and Isoko with regards to the funeral ceremony and have greatly been affected. The practice has been perceived as that which promotes Patriarchal dominance. The paper adopts the historical and analytical model, deploying both primary and secondary data in interrogating the practice of returning the corpse of the married woman to the homestead of her family rather than bury her in her husband’s homestead and avers that if not properly handled, it could affect intergroup relation. The paper, therefore, concludes that this trend is posing a serious threat to peaceful and harmonious intergroup relation among families that indulged in inter-tribal marriage. It recommends among others, that the Urhobo and Isoko should be re-socialized properly to flow with modernity in this aspect of their culture.
Los arreglos institucionales en torno a la política forestal mexicana. Una perspectiva de redes
Authors: Custodio González Carlos Alejandro , Perez Verdin Gustavo , Marquéz Linares Marco Antonio , Medina Herrera Elizabeth
Published: October 2022

Desde su incorporación al ámbito público en 1926, el Estado mexicano ha concentrado la capacidad de gestión y manejo de los recursos y bienes forestales, en detrimento de la participación de las comunidades forestales. En ese contexto, el objetivo del presente trabajo fue identificar las características de los arreglos institucionales que condicionan la gobernanza como característica constitutiva de la política forestal mexicana. A partir de una metodología sustentada en cinco indicadores del análisis de redes sociales: tamaño de red, densidad de la red, grado de centralidad, grado de intermediación y grado de cercanía. Los resultados muestran la existencia de cinco características de los arreglos institucionales que condicionan a la gobernanza forestal: 1) gobernabilidad sobre gobernanza; 2) exclusión o restricción de las comunidades para el acceso y derecho de tierras forestales; 3) coordinación multisectorial; 4) asimetría política y rigidez institucional; 5) arreglos verticales y gestión centralizada.
Estudios de usuarios en archivos municipales
Authors: Rubio Hernández Alfonso
Published: October 2022

En la línea de sus estudios sobre archivística aplicada, el profesor Rubio, aborda un tema no tan usual dentro de la corriente general de la disciplina: los estudios de usuarios. A través de una metodología propia y apoyado en un sólido estudio de caso, nos presenta una propuesta novedosa de aplicación de los estudios de usuarios a los archivos municipales, considerando que todavía descubre numerosos y valiosísimos datos que antes permanecían secretos en las íntimas e insospechadas relaciones información-usuario-servicio de archivo, datos que apoyan las funciones inherentes de la gestión documental de archivo en aras a ofrecer siempre un mejor servicio al usuario.
Gingivitis Ulcerativa Necrosante. Reporte de un Caso
Authors: Hernández Quintero Lina Fernanda , Calero Quintero Jesus Alberto
Published: October 2022

La gingivitis ulcerosa necrotizante (GUN) es una forma distinta y específica de enfermedad periodontal. Es un proceso inflamatorio agudo de los tejidos gingivales que se caracteriza por síntomas clínicos específicos asociados a dolor (generalmente de inicio rápido), necrosis interdental y sangrado gingival. Si uno de estos tres síntomas está ausente, no se puede diagnosticar GUN. Este caso clínico describe el abordaje diagnóstico y el manejo conservador con buena evolución de la GUN en una paciente femenina de 14 años sin enfermedad sistémica.
Into the Woods: Toward a Material Poetics of the Tropical Forest in Philippine Literature
Authors: Diaz Glenn
Published: October 2022

This study considers how the tropical forest as a material and discursive space mediates the ways in which history is imagined in Philippine literary texts and literary production. Mobilizing ideas from new materialism, material poetics, and tropicality, the paper looks at generative moments from indigenous and revolutionary literature—two broad traditions whose conditions of possibility are inextricably linked with the materiality of the tropical forest and thus inevitably evince the structuring force of such nonhuman agencies and subjectivities. By disclosing how the “more than human” is constitutive of history and historical subject formation, it seeks to foreground the agency of Philippine forests in actively and collaboratively contesting the catastrophic violence of capital and state-making on people and the natural world.
Some Things are not held together by Glue: Chunambo and other ‘Sticky Matter’ in Subtropical Macao, China
Authors: Hodges Benjamin Kidder
Published: October 2022

This article uses adhesives or what I am calling here ‘sticky matter,’ to illustrate multispecies relationships in Macao, a subtropical coastal region in South China. It focuses primarily on a traditional rammed earth material known as chunambo in Macao and other former Portuguese colonies. Composed of oyster shell, straw, rice, local soils and sand chemically bounded together by slacked lime, this precursor to modern day concrete has a unique combination of porosity and structural integrity that makes it particularly adaptable to tropical climates and a contrast to contemporary building practices which are often designed to create sealed interior environments. Discussions of porosity within New Materialism, Urban Studies and Chinese aesthetics will be used to think stickiness alongside questions of material integrity in the face of sea level rise, erosion and anthropogenic forces. Much like limestone sediments formed over the course of thousands of years at the bottom of ancient tropical sea beds, chunambo invites speculation about material permanence in the face of climate futures and a changing urban environment.
Analysis of the Influence of Financial Technologies on of the Banking Sector of the Russian Economy.
Authors: Mamedov Murad Azer ogly , Aliev Magsud Murad Ogly
Published: October 2022

The financial sector of the economy, in particular represented by commercial banks, is one of the most progressive. This article analyzes the modern banking sector of the economy, an attempt is made to study the impact of financial technologies on the development and transformation of the banking sector of the Russian economy. To achieve the goals of the study, the authors studied the scientific works of domestic and foreign authors on relevant topics. Based on a review of the literature and an analysis of existing definitions, the author's definition of the concept of financial technology is given, the concepts of fintech and fintech startups are separated. On the basis of statistical data, the authors present data on the volume of fintech transactions, the number of neobanking users, and conduct a macroeconomic content analysis of the level of implementation of financial technologies in the activities of commercial banks. Based on the results of the analysis, the authors came to the conclusion that financial technologies have a significant impact on the development and transformation of both the banking sector of the economy itself and the types of cooperation between commercial banks and fintech startups. At the same time, the level of implementation of financial technologies and the types of interactions between commercial banks and fintech start-ups directly depend on the amount of assets and revenue of commercial banks, and these factors, in turn, influence the determination of the further strategy for the development of commercial banks and their transformation. Given the conditions prevailing in the Russian market, the fintech industry will primarily develop both within the banking sector of the economy and, to a large extent, in cooperation with commercial banks.
Conceptual Design and Simulation of a Dual-Axis Parallel Manipulator Eye Mechanism for Space
Authors: Siddartha Pattisapu Butchi , Kumar Srivastava Anoop , Kumar Abhishek , Suresha Kumar H. N.
Published: October 2022

Camera steering mechanisms have been extensively used in the International Space Station; rovers of interplanetary missions; and humanoids for surveillance, path planning, and experimentation. Based on the application, both stereoscopic and planar imaging have been used; and mechanisms have been suitably configured. A suitable articulating system for stereoscopic imaging can be configured by mimicking the motion of human eyeballs. Thus, a generic Dual-Camera Dual-Axis articulating Mechanism (DCDM) has been configured that can be used as a pair of eyes for a humanoid or an articulating mechanism for navigation cameras on rovers as well as surveillance cameras for hazard detection. This paper provides the details of a DCDM, which mimics the motions of the human eye and enables real-time stereoscopic imaging. The transmission chain is built using parallel manipulations. This paper brings out a conceptual design and associated dynamic motion simulation analysis for validation of the concept. The mechanism presented articulates the camera alone, and thereby helps in minimizing motion of the entire rover or a humanoid for over a larger imaging area.
REGULATION OF CURRENT PULSE PARAMETERS DURING MIG WELDING OF ALUMINUM ALLOYS
Authors:   Paton Electric Welding Institute NAS of Ukraine, Zhernosekov Anatolii , Fedorchuk Viktor ,   Paton Electric Welding Institute NAS of Ukraine, Novomlynets Oleh ,   Chernihiv Polytechnic National University
Published: October 2022

Pulse-arc welding with a fusible electrode in inert gases occupies one of the leading places among arc methods in the manufacturing of structures from aluminum alloys of responsible purpose. Drops of molten metal of the electrode wire, with the correct selection of pulse parameters, have a small diameter, they do not deform, the evaporation from their surface is minimal and the transfer of alloying elements from the electrode wire to the welding bath is maximal. The problem of the influence of the pulses shape and their parameters on welds and connections during arc welding with a fusible electrode remains unstudied. Therefore, the research on improving the efficiency of pulse-arc welding through the creation of new equipment with enhanced capabilities of management of process parameters is relevant.The development of modern electric welding equipment, including the sources of power for the welding electrode arc, will allow increasing significantly the efficiency of the process. The peculiarity of the use of such equipment is explained by the emergence of many combined and hybrid welding technologies using a pulsed welding electrode arc, for example, laser-arc, plasma-arc. The purpose of the research is to expand the technological regimes of pulse-arc welding with a fusible electrode in inert gases of aluminum alloys by controlling the shape and parameters of the current pulses.Experimental studies on the control of current pulse parameters (duration, frequency, amplitude) and its shape during welding of aluminum alloys AMg6, 1201 and 2219 in argon have been conducted. The obtained dependencies can be used for the development of synergistic equipment for pulse-arc processes.Such equipment will allow expanding the ranges of adjustment of pulse parameters when welding a wide range of aluminum alloys of different alloying systems in different spatial positions and will allow using it in hybrid technologies.
ULTRASOUND RESEARCH OF THE INFLUENCE OF CARBON FIBERS ON THE PROPERTIES OF CARBON PLASTIC BASED ON POLYPHENYLENE SULPHIDE
Authors:   Dniprovsk State Technical University, Naberezhna Olga
Published: October 2022

Polyphenylene sulfides are one of the plastics with truly outstanding characteristics. The introduction of carbon fibers into the composition of the matrix contributes to the expansion of their potential use. The main requirement for the obtainedmaterialsis to increase their strength indicators due to the reinforcement of the matrix frame with carbon fibers.Carbon plastics are distinguished among other composite materials by high specific strength and stiffness, low coeffi-cients of linear thermal expansion and friction, high wear resistance and resistance to aggressive environments. This allows their use in defense industries and, above all, in aviation and rocket engineering.The analysis of the latest research and publications showed that the issue of selection and distribution of carbon fiber has a strong influence on the final indicators of the material's properties. To improve the operational characteristics, discrete carbon fibers were introduced into the composition of polyphenylene sulfide. The main goal of this method of obtaining com-posites was the uniform distribution of fibers in the polymer matrix.The article presents the results of mechanical tests of polyphenylene sulfide and carbon plastics based on it, the main indicators are determined: strength, relative deformation and modulus of elasticity, microhardness. It is shown that the method of acoustic defectoscopy -ultrasonic control can be used to assess the strength characteristics of compositions based on poly-phenylene sulfide. A non-destructive approach to the study of carbon plastics based on polyphenylene sulfide is proposed, which results correlate with laboratory studies of material properties. The pulses of the reflected "bottom" signals are given and the speed of wave propagation in the material is determined.The analysis of the physical and mechanical properties showed that the resulting carbon-plastics are characterized by fairly high strength indicators, which makes it possible to recommend them for replacing thermoplastic and thermosetting polymers, especially in machine building.
ELECTROCHEMICAL PROPERTIES OF NATURAL IONIC LIQUIDS OF NEW GENERATION
Authors:   National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Vorobyova Viktoriia , Vasyliev Georgii ,   National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Trus Inna ,   National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Linyucheva Olga ,   NationalTechnical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»
Published: October 2022

Nowadays, the development of modern chemical technology and engineering is aimed at the concept of greening and implementation of "green" technologies. Therefore, the study of deep eutectic solvents (DES), which arecheap and environmentally friendly, is of particular importance. DES are a class of novel green solventswith a wide range of properties and applications. In the work, 6 solvents were synthesized using choline chloride, lactic acid, proline, betaine, propanol, and urea. These constituents jointly determine the nature of the synthesized DESs and their electrochemical behavior. The knowledge of physicochemical, electrochemical properties of DESs is also valuable to DESs practical applications. Electrical conductivity indicates the strength with which DESs can conduct electricity. The focus of the investigation is physicochemical properties (electrical conductivity, electrochemical window) deep eutectic solvents (DESs). The formation of hydrogen bonds between the components was confirmed and the electrochemical characteristics of the synthesized ionic liquids were determined. The conducted studies showed that urea and lactic acid arethe most suitable compounds for the formation of DES. DESs have been synthesized using choline chloride, Betaine and Proline as hydrogen bond acceptors (HBAs). Choline chloride-urea, Choline chloride-lactic acid, Sodium acetate-lactic acid, Choline chloride-propanediol, Proline-lactic acid, Betaine-lactic acid were synthesized. The electrical conductivity of deep eutectic solvents was measured and the width of the electrochemical window was evaluated using cycling voltammetry. FTIR-ATR was carried out to confirm the formation of the DESs. FT-IR results confirmed that H-bonds, occurring between two components in DES, were the main force leading to the eutectic formation. Adding water in quantity 1...25% leads to a decrease in the width of the electrochemicalwindow from 1.33to 1.21 V and increase in electrical conductivity from 0.39 to 2.07 S/m.
STUDY OF THE DEPENDENCE OF SHEAR STRESSES OF POLYETHYLENE ON TEMPERATURE AND SHEAR VELOCITY
Authors:   tate Research Institute for Testing and Certification of Weapons and Military Equipment, Bakalov Valery , Kuzmenko Victor ,   State Research Institute for Testing and Certification of Arms and Military Equipment, Yarish Igor ,   State Research Institute for Testing and Certification of Weapons and Military Equipment
Published: October 2022

Polyethylene is increasingly used in various industries such as light, medical and others as a variety of packaging and structural materials. Rheological properties of polyethylene affect products quality. Therefore, knowledge of these properties affects the calculation methods of equipment that produces materials from polyethylene, as well as the control system of technological processes of such industries.When designing equipment for processing polyethylene, namely the forming channels of extruders, flat slotted heads, the question of accurate determination of its rheological properties depending on the temperature and shear rate arises. Depending on the specified rheological properties the geometrical sizes of the specified channels change. These rheological properties are usually determined on the basis of experiments conducted at certain shear rates and temperatures. When designing, there is a need to calculate the geometric dimensions of the forming channels at shear rates and temperatures other than experimental. Therefore, there is a problem of developing a method of calculating these dimensions on the basis of experimental data obtained at other shear rates and temperatures. On the basis of the conducted research, the equation of the dependence of the shear stress of polyethylene on its shear rate and temperature was obtained. In the equation, the shear stress is directly proportional to the conditional viscosity and the shear rate gradient in power, which is the flow index. It is shown that the conditional viscosity of polyethylene is well described by the Arrhenius equation, and the flow index has a quadratic dependence on temperature. The obtained generalized equation of shear stress of polyethylene from its shear rate and temperature will allow to more accurately calculate the geometric dimensions of the forming channels of extruders, slotted heads, as well as to improve control systems for these devices.
Mycotic clival osteomyelitis secondary to immunosuppression by SARS-CoV-2
Authors: Delgado-Arce Julio César , Becerra-Arciniega Fabiola Alejandra , Escamilla-Chávez Elizabeth , VelascoTorres Hector Sebastián , Guerrero-Suarez Pablo David , Mártinez-Anda Jaime Jesús
Published: October 2022

Background:

During the past 2 years, the use of systemic corticosteroids has increased due to COVID-19 atypical pneumonia management. Similarly, an increase in mycotic infection cases has been reported during the same period as a consequence of immunosuppression caused by corticosteroid overuse. Mycotic clival osteomyelitis is a rare clinical entity which presumably has increased its incidence during the pandemic.

Case Description:

A 52-year-old woman who presented persistent headaches and unexplained weight loss after being hospitalized due to COVID-19 pneumonia treated with intravenous corticosteroids. Head computed tomography and magnetic resonance imaging showed extensive osteomyelitis at the clival region with no brain parenchyma involvement. Surgical excision through navigation-guided transnasal transclival endoscopic extended approach was performed for surgical debridement. Histopathological analysis revealed angulated hyphae, suggestive of Aspergillosis. Systemic antifungal treatment was administered for 30 consecutive days. Afterward, she was discharged without any remarkable neurological findings, reassessed during follow-up.

Conclusion:

The COVID-19 pandemic has had an effect on the reemergence of mycotic infections due to corticosteroid immunosuppression. Clival osteomyelitis secondary to mycotic infection is an exclusion diagnosis that we encourage to be highly suspected within the persisting COVID-19 pandemic.
Determination of Naphthol Yellow S and Chromotrope 2B at trace levels by spectrophotometry after mixed micellar cloud point extraction using TX-114 and TBAB
Authors: Suneetha D. , Shyamala P.
Published: October 2022

A method for the determination of two anionic dyes, Naphthol Yellow S (NYS) and Chromotrope 2B (CTB) in the presence of TBAB (Tetra butyl ammonium bromide) and Triton X-114 (Polyethylene glycol tert-octylphenyl ether) mixed micelles was developed by cloud point extraction pre-concentration technique. Good extraction efficiency was achieved for both NYS and CTB(85-92)% from their aqueous solutions by the optimization of pH of the solution, concentration of surfactants and salting out agent. Linearity was found to be in the range 1.5 – 30.0 μg mL-1for NYS and 1.86 – 27.2 μg mL-1 for CTB. The limit of detection was found to be in ngmL-1 range. Langmuir adsorption model was successfully applied to the phase separation process. The enthalpy, entropy and free energy change for solubilization of these dyes in surfactant phase were also determined. This method was then used to determine the dye concentration in the tap and sea water samples.
MENINGKATKAN HASIL BELAJAR GEOGRAFI MENGGUNAKAN PEMBELAJARAN KOOPERATIF TIPE TGT
Authors: Khamid Muh
Published: October 2022

The problem in this classroom action research is that the learning outcomes of students in class XI IPS 3 at SMAN 3 Simpang Hilir are low. The purpose of the study was to determine the process of each cycle in improving the learning outcomes of geography on population dynamics in Indonesia for development planning using the TGT type cooperative learning model for students in class XI IPS 3 at SMAN 3 Simpang Hilir and to find out whether there was an increase in learning outcomes of geography on population dynamics in Indonesia for development planning uses the TGT type cooperative learning model for students in class XI IPS 3 at SMAN 3 Simpang Hilir. This type of research is classroom action research which is carried out in class XI IPS 3 at SMAN 3 Simpang Hilir. This action research procedure includes four stages, namely planning, implementation, observation and reflection. Data collection techniques by observation, post test, report. Data analysis technique using descriptive. Overall, the level of teacher mastery from cycle 1 to cycle 2 increased from 83, 87% (good) to 97,41% (very good). There is an increase in the average learning outcomes from cycle 1 to cycle 2 of 12.83 so it can be concluded that learning uses the Team Games Tournament (TGT) cooperative learning model on population dynamics material in Indonesia for development planning in class XI IPS 3 SMA N 3 Downstream intersection can improve student learning outcomes.Keywords: improve, geography learning outcomes, TGT.
INTEGRASI PENGEMBANGAN KURIKULUM 2013 SEBAGAI SUMBER PEMBELAJARAN INTERAKTIF TERHADAP PENDIDIKAN IPS DI INDONESIA
Authors: Susilaningtiyas Dwi Erna , Fatmawati Noor
Published: October 2022

Perubahan aturan pembelajaran di dunia pendidikan dalam konteks global berimbas pada pendidikan di Indonesia. Perubahan aturan belajar tersebut, mempengaruhi tujuan akhir pendidikan di Indonesia yang saat ini diwadahi dengan diberlakukannya kurikulum baru, dimana hal tersebut merupakan aturan baru bagi pendidikan di Indonesia yang berubah sesuai dengan tuntutan zaman. Tuntutan pembelajaran tersebut merupakan sebuah Kurikulum baru yang dikenal dengan sebutan K13 (Kurikulum Tahun 2013). Kurikulum 2013 tersebut, menuntut pengaplikasian dari sejumlah pendekatan pembelajaran yang dipandang layak digunakan agar dapat membentuk kompetensi serta kemampuan siswa, meningkatkan keterampilan, sekaligus membangun sikap siswa. Adapun pendekatan pembelajaran yang dimaksud adalah pembelajaran interaktif serta integratif, dimana pendekatan pembelajaran tersebut dapat digunakan pada jenjang Sekolah Menengah Pertama maupun Madrasah Tsanawiyah. Penelitian ini bertujuan untuk mendeskripsikan tentang konsep pengembangan kurikulum 2013 sebagai sumber pembelajaran interaktif bagi Pendidikan IPS di Indonesia. Metode penelitian yang digunakan adalah metode penelitian kualitatif dengan jenis penelitian studi kepustakaan. Teknik pengumpulan data yang digunakan yaitu berupa studi dokumentasi dengan melakukan analisis isi dokumen yang telah relevan dengan topik atau kajian penelitian. Sumber data yang digunakan dalam kajian ini meliputi berbagai buku serta jurnal-jurnal melalui media online. Adapun temuan dalam penelitian ini menunjukkan bahwa konsep pembelajaran interaktif melalui Kurikulum 2013 perlu diterapkan sebagai sumber pembelajaran demi mencapai keberhasilan pembelajaran IPS dalam dunia pendidikan. Hasil penelitian ini diharap memberikan respons positif agar dapat meningkatkan hasil belajar siswa setelah menerapkan sumber pembelajaran IPS berbasis pembelajaran interaktif.
REALITAS PERAN DAN HAK PEREMPUAN DALAM LINGKUP ORGANISASI HMJ DI FKIP UNTIRTA (PERSPEKTIF SOSIOLOGI GENDER)
Authors: Astuti Tia , Afrizal Stevany
Published: October 2022

Persoalan mengenai ketidakadilan bagi kaum perempuan pada umumnya telah terjadi sejak lama yang memunculkan banyak terjadinya permasalahan gender. Terdapat pelabelan dimana laki-laki mempunyai kedudukan yang lebih tinggi dari perempuan dan perbedaan yang jelas mengenai peran dan tugas laki-laki dan perempuan di masyarakat dalam berbagai bidang seperti kepemimpinan, ekonomi, pendidikan, sosial, maupun politik. Laki-laki dianggap memiliki kekuatan yang lebih tinggi dibandingkan perempuan, sehingga perempuan dianggap lemah dan tidak berdaya. Penelitian ini bertujuan untuk mengetahui: 1) realitas peran dan hak perempuan dalam lingkup organisasi HMJ di FKIP Untirta 2) faktor apa saja yang melatarbelakangi mulai terbukanya kesempatan perempuan menjadi pemimpin dalam organisasi HMJ di FKIP Untirta, dan 3) wujud kesetraan gender yang terjadi dalam lingkup organisasi HMJ di FKIP Untirta. Metode penelitian yang digunakan dalam penelitian ini yaitu deskriptif kualitatif melalui observasi, dan wawancara secara online dalam memperoleh data penelitian yang dibutuhkan. Hasil penelitian menunjukan bahwa terjadinya keterbukaan peran dan hak bagi perempuan dalam lingkup organisasi Himpunan Mahasiswa Jurusan (HMJ) di FKIP Untirta. Perempuan memperoleh kesempatan yang sama untuk dapat berpartisipasi, mengajukan pendapat, mengambil keputusan, memilih dan dipilih menjadi pemimpin. Hal ini menggambarkan perempuan mulai setara dengan laki laki, di mana peran dan hak perempuan tidak lagi terbatas pada ranah domestik saja.
Synergistic effects of marine pollutants and microplastics on the destabilization of lipid bilayers
Authors: fleury jean baptiste , Baulin Vladimir A.
Published: October 2022

The increasing production of plastic worldwide results in increasing amounts of plastic waste dumped into the oceans. Plastic waste is fragmenting into smaller pieces up to micro and nanoplastics, which may cross physiological barriers and affect the functions of living organisms. Microplastics can travel with rain and clouds; they are present in soil, snow-capped mountains, and even in the organs and blood of human beings. The potential health implications of microplastics in living organisms raise concerns and are intensively investigated. Recently, we reported the effect of mechanical stretching of microplastics on a lipid bilayer. By combining experimental and theoretical approaches, we have shown that microplastic particles adsorbed on lipid membranes increase membrane stress even at low particle concentrations. In this manuscript, we demonstrate the synergetic effect of marine pollutants on the mechanical interaction induced by microplastics. For this purpose, bare microplastics are incubated in seawater containing marine pollutants. We show that pollutants, such as chemical solvents, significantly increase the mechanical stretching induced by microplastics. In turn, microplastics can be viewed as vectors for solvent molecules, facilitating their penetration into the core of lipid membranes and thus strongly affecting their biophysical properties.
Transitory Sensitivity in Automatic Chemical Kinetic Mechanism Analysis
Authors: Johnson Matthew S. , McGill Charles J. , Green William H.
Published: October 2022

Detailed chemical kinetic mechanisms are necessary for resolving many important chemical processes. As the field has advanced, kineticists have become interested in constructing progressively larger kinetic mechanisms to model increasingly complex chemical processes. These large kinetic mechanisms prove incredibly difficult to refine and time-consuming to interpret. Traditional sensitivity analysis on a large mechanism can range from inconvenient to practically impossible without special techniques to reduce the computational cost. We first present a new time-local sensitivity analysis we term transitory sensitivity analysis. Transitory sensitivity analysis is demonstrated in an example to accurately identify traditionally sensitive reactions at an 18,000x speed up over traditional sensitivities. By fusing transitory sensitivity analysis with more traditional time-local branching, pathway and cluster analyses, we develop an algorithm for efficient automatic mechanism analysis. This automatic mechanism analysis at a time point is able to identify the reactions a target is most sensitive to using transitory sensitivity analysis and then propose hypotheses why the reaction might be sensitive using branching, pathway, and cluster analyses. We implement these algorithms within the Reaction Mechanism Simulator (RMS) package, which enables us to report the the automatic mechanism analysis results in highly readable text format and in molecular flux diagrams.