bluuebunny/crossref_metadata_2025 huggingface dataset:
NH2-modification Copper Metal-organic Framework as a Sunlight Photocatalyst for the Removal of Organic Dyes from Aqueous Solution
Authors: Wang Qi , Xu Qianqian , Zhang Jiawei , Fang Long , Xia Kai , Sun Deshuai
Published: April 2024

Dyes present in wastewater pose a threat to aquatic organisms and cannot be effectively eliminated by conventional biochemical treatment methods. As an alternative, the photocatalytic decolorization of dyes has emerged as a cost-effective and environmentally friendly approach. Two 1,3,5-benzenetricarboxylate (BTC)-based metal-organic frameworks (MOFs), CuBTC and CuBTC-NH2, were synthesized and used for the removal of two anionic dyes, namely Reactive Blue 171 and Acid Blue 1, from wastewater under sunlight irradiation. The structural and morphological characteristics of the MOFs were identified using Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. Compared to CuBTC, CuBTC-NH2 exhibited excellent photocatalytic activity. The successful degradation of 90% of the dyes was observed within 24 h of sunlight exposure using CuBTC-NH2, while only 70% degradation was achieved with CuBTC. The weak basic nature of the dye wastewater (pH 8-10) was found to facilitate the degradation process. CuBTC-NH2 was not only efficient in the removal of dyes but could also be recycled and reused for at least five cycles. In the process of photocatalytic degradation, the diazo bond of dyes in ortho-position to the amino substitution on the aromatic ring was attacked first. These results provide insights into the design of MOF catalysts for dye removal under visible-light irradiation.
Peculiarities of Calcite Interaction with Carboxylic Acids
Authors: Prokudina Nina A. , Gabisov Akhdan S.
Published: April 2024

This research examined the interaction of calcite with carboxylic acids (formic, citric, malic, and oxalic acids) at temperatures ranging from 22 to 80 °C. Experiments were carried out using an open batch reactor to prevent the impact of aggressive CO2 byproducts. The dissolution rate was determined to be a combination of the chemical interaction of calcite with acid and the promotion of dissolution by calcium carboxylate salt. When acid concentrations are low, the surface chemical reaction acts as a limiting step with an activation energy of 42 kJ∙mol-1. Conversely, at higher acid concentrations, the formation of calcium carboxylate with reduced solubility hinders its dissolution, thereby restricting the overall calcite dissolution process. Both stages are significantly influenced by temperature. The specific functional groups present in the acids aid in the formation of surface species with Ca2+ cations. The properties of these functional groups impact the stability of the species and the dissolution of calcite.
MODEL OF ADSORPTION WASTE TREATMENT INCLUDING A CHEMICAL REACTION
Authors:   Kazan National Research Technological University, Karataev O.R. , Ananikov S.V. ,   Kazan National Research Technological University, Lashkov V.A. ,   Kazan National Research Technological University
Published: April 2024

The article poses and solves the general problem of the dynamics of adsorption from a liquid in a fixed layer of adsorbent, taking into account a first-order chemical reaction and a linear adsorption isotherm. The adsorption model is based on the mass balance equations of the target component for an infinitesimal layer element and adsorption kinetics, written as a system of linear first-order partial differential equations with corresponding boundary conditions. The problem is solved by the Laplace transform method. This made it possible to reduce the joint solution of a system of equations in the originals to an independent solution in images of the Cauchy problem for an ordinary differential equation and an algebraic equation. As a result, expressions were obtained for the concentrations of the target component in the adsorbent layer and in the flow at any time and in any section of the layer. This made it possible to simulate a practical problem of the adsorption of chloroform by zeolites for the treatment of wastewater from a real swimming pool and obtain interesting graphic materials based on the solution and the developed algorithm. The results of the solution can be translated into numbers by programming in any available high-level algorithmic language. It is shown that the shape of the curves of changes in the concentrations of the target component in the adsorbent and adsorbent over the thickness of the adsorbent layer and over time does not change, although the numerical values of these parameters change in a fairly wide range. It is also noted that in the range of concentration changes considered in the article, the concentration of the adsorbent initially decreases sharply, and then smoothly along the entire length of the fixed adsorbent layer decreases slightly. It has been revealed that the use of methods, techniques and theorems of the Laplace transform method in relation to the problem of adsorption dynamics makes it possible to deeply penetrate the mechanism of the problem being solved, which is not possible with other solution methods. This allows, with a known set of initial data, to find the change in the concentrations of the target component in both phases and select the required thickness of the adsorbent layer.
CALCULATION AND CONSEQUENCE OF DESIGNING THE POWER DRIVES FROM MATERIALS WITH SHAPE MEMORY FOR DEFORMING AND TESTING DEVICES
Authors:   Samara National Research University named after Academician S.P. Korolyov, Grechnikov F.V. , Glouschenkov V.A. ,   Samara National Research University named after Academician S.P. Korolyov
Published: April 2024

Development of deforming and testing devices with power drive from the material with shape memory demands implementing a specified consequence of steps at its designing and calculating.A necessary consequence of designing and calculating a separate power element, as well as a whole power drive on the base of the obtained experience in developing such equipment is represented in this work.All designing and calculating stages of the power drive from a shape choice and size of a power element to the needed parameters (deformation, power and thermal parameters) are considered.A special attention is paid to the parameters' interconnection for providing a necessary operation efficiency of the power drives.
DETERMINATION OF THE EFFECTIVE CUTTING SPEED OF A PREFABRICATED TOOL BASED ON AN ASSESSMENT OF THE RISKS OF LOW MACHINABILITY OF THE MATERIAL AND LOSS OF OPERABILITY OF THE CUTTING TOOL
Authors:   Tyumen Industrial University, Artamonov E.V. , Ostapenko M.S. ,   Tyumen Industrial University, Vasilega N.A. ,   Tyumen Industrial University
Published: April 2024

The article provides a method for determining the effective cutting speed as a result of using the previously developed method of assessing risks and opportunities in the operation of prefabricated cutting tools, which allowed to identify the risks of low machinability of the material and loss of operability of the cutting tool. These risks have been assessed for a specific technological operation. As a result of the implementation of the method, the most suitable tool hard alloy was selected, rational cutting modes were selected based on an assessment of the risk of low machinability of the material and the risk of loss of operability of the cutting tool.
NEOLITHIC BONE PRODUCTS OF THE MIDDLE URALS: SOURCES, TYPES, MANUFACTURING TECHNIQUES
Authors:   Russian State Professional Pedagogical University (Nizhniy Tagil branch), Serikov Yu.B.
Published: April 2024

The main sources of Neolithic bone products are cave and peat sites. All Neolithic bone products can be divided into 4 groups: weapons (456 copies), domestic and household items (22 copies), works of art (2 copies) and jewelry (112 copies).The technique of making bone products in the early Neolithic is practically no different from the Mesolithic. The ancient craftsmen used techniques such as padding, scraping, planing, cutting and shearing with stone chopping tools, sawing, grinding, polishing, as well as cutting grooves. The widespread use of chemical softening of bone and the use of turning to produce biconical arrowheads can be considered a revolutionary innovation of the Neolithic era.
HUNTING OF THE KOLA SAMI BASED ON THE MATERIALS OF STATISTICAL REPORTS FROM THE SECOND HALF OF THE XVIII CENTURY
Authors:   Murmansk Arctic University, Chaplygina D.A.
Published: April 2024

The article is devoted to the issues of hunting of the Kola Sami in the second half of the XVIII century. The author analyzes data from statistical statements that were collected in 1764 and in 1785. They preserved information about the structure of the hunting economy: hunting objects, fishing methods, as well as the further use of the game. In addition, the author pays attention to the social role of hunting in the life of the Kola Sami, because it not only generated income, but also served as a way to preserve traditions and culture. The Sami believed that hunting helped them maintain their spiritual connection with nature and protected them from evil spirits. The study revealed that hunting in the second half of the XVIII century still occupied an important place in the daily life of the Sami, but there were already certain signs of decline associated with a decrease in the main objects of hunting in forests and the emergence of reindeer husbandry. Everyone was engaged in hunting to one degree or another, but mostly they were adult, able-bodied men. Fur-bearing animals were most often hunted, since they played a large role in monetary trade relations between the Sami and the Russians.
ORGANIZATIONAL AND LEGAL BASIS FOR THE FORMATION OF THE PROSECUTOR'S OFFICE IN SOVIET RUSSIA AND THE FORMATION OF THE SIMBIRSK PROVINCIAL PROSECUTOR'S OFFICE IN 1917 – 1924
Authors:   IlyaUlyanov Ulyanovsk State University of Education, R.A. Mukhamedov  , M.V. Chigrin  ,   IlyaUlyanov Ulyanovsk State University of Education, A.G. Pashkin  ,   State Archive of Contemporary History of Ulyanovsk Oblast
Published: April 2024

The authors consider the organizational and legal foundations of the formation of the Soviet prosecutor’s office using the example of the Simbirsk provincial prosecutor's office. The study is based on the materials of the State Archive of Ulyanovsk Oblast, the State Archive of Contemporary History of Ulyanovsk Oblast, and the State Archive of the Russian Federation, which are being presented to the scientific world for the first time. The authors reveal the prerequisites for the formation of the Soviet prosecutor's office in the law enforcement system of the Soviet state, determine the organizational and legal basis for the formation of the Soviet prosecutor's office, study the process of formation of the prosecutor's office and identify problems of its activities in the Simbirsk province. The authors came to the conclusion that the Bolsheviks, taking into account the attitude of citizens towards the pre-revolutionary prosecutor's office and the factor of prosecutors' loyalty to the regime of the Russian Empire in the first years of Soviet power, deliberately abandoned the idea of its formation in the Soviet law enforcement system. The function of overseeing compliance with the rule of law became the prerogative of the Workers’ and Peasants’ Inspection, the People’s Commissariat of Justice and its structural units in the provincial executive committees, as well as in a number of cases of the Cheka bodies. After the outcome of the Civil War became obvious, the Bolsheviks reconsidered their decision and set about organizing the prosecutor's office. In the Simbirsk province, the activities of the prosecutor's office were initially hampered by the low level of material and technical support and the shortage of personnel specialists.
KOLA OSTROG AT THE END OF THE XVII CENTURY: CONDITION AND ARMAMENT
Authors:   Murmansk Arctic University, Gazizov V.V.
Published: April 2024

The article deals with a little-studied period in the history of the Kola Ostrog in the late 17th century. The Kola Ostrog was a typical wooden fortress in the Russian North, able to withstand a long siege, but at the end of the 17th century its military importance declined, which is confirmed by the general condition of the fortress. The author compares the Kola Ostrog with other fortresses of the Russian North, and also examines its fortifications and the dynamics of changes in armaments and ammunition.
WOMEN'SDIALY LIFE AND STEREOTYPES OF FEMINITY BASED ON THE MATERIALS OF SOVIET CINEMA OF THE LATE 1960s -EARLY 1980s
Authors:   Samara National Research University named after Academician S.P. Korolyov, Gubanova T.S.
Published: April 2024

The purpose of the study is to reveal the features of the stereotypes of femininity in Soviet society, broadcasted through the works of late Soviet cinema. The research uses a gender approach based on the principle of interdisciplinarity. The author argues that the specificity of the representation of female images and normative models of femininity was a demonstration of three main models of female self-realization: «woman leader», «woman mother», «woman consumer», and reveals the similarities and differences of these three types.
THE SYSTEM OF THE PARTY-POLITICAL WORK IN THE RED ARMY DURING THE CIVIL WAR (1918 – 1920). PART 1
Authors:   Samara Federal Research Scientific Center of Russian Academy of Sciences, Ippolitov G.M. , Filatov T.V. ,   Povolzhskiy State University of Telecommunications and Informatics
Published: April 2024

It has been convincingly proven in the Russian and Soviet historiography, that in the fire of the fratricidal Civil War in Russia (1918 - 1920), a unique military-historical phenomenon arose and strengthened in the Workers' and Peasants' Red Army: party-political work carried out by the power structures of the Soviet state and the ruling Communist Party. Analyzing this phenomenon, the authors examine its system, which was distinguished by a complex organization, which included many subsystems and various parameters, united by the conceptual basis of Bolshevism and the unity of forms and methods of organizational, party and ideological work.
PROSPECTS FOR BREEDING WINTER COMMON WHEAT FOR RESISTANCE TO LEAF RUST USING MOLECULAR MARKERS
Authors:   Samara Federal Research Center of the Russian Academy of Sciences, Dolzhenko D.O. , Malchikov P.N. ,   Samara Federal Research Center of the Russian Academy of Sciences, Zueva A.A. ,   Samara Federal Research Center of the Russian Academy of Sciences, Menibaev A.I. ,   Samara Federal Research Center of the Russian Academy of Sciences, Bugakova N.E. ,   Samara Federal Research Center of the Russian Academy of Sciences
Published: April 2024

Wheat leaf rust is a harmful disease whose epiphytotics lead to serious grain yield losses. Severe epiphytoties of leaf rust are observed once every 3-4 years in the Volga Region. Despite numerous breeding achievements, many modern wheat varieties in the Russian Federation are not resistant to leaf rust. Studies of the newest assortment of soft wheat, carried out by Russian researchers, show that the genotypes of 93% of the studied varieties contained Lr genes individually or in various combinations; the Lr34 gene is widely represented in combinations with the ineffective juvenile genes Lr3, Lr10 and Lr26, which provides an acceptable level of field resistance to leaf rust. Selection for resistance is hampered by the constant change in the race composition of the pathogen, which goes hand in hand with the introduction of highly expressed genes of vertical resistance into the wheat genotype by breeders. The priority in breeding is the use of "field" or long-term resistance. There are suggestions that this type of resistance is due to the additive effects of several genes that cause the effects of age resistance and "slow rusting”. Development of cultivars possessing "pyramids" of genes will produce a long-term effect of resistance. However, the use of classical methods of hybridological analysis and phytopathological tests for gene pyramiding is time-consuming and labor-intensive and not always effective. Marker-assisted selection makes it easy to identify the right alleles in both starting material and breeding lines, making it an indispensable tool in immunity breeding. The use of molecular markers makes it possible to quickly and successfully create varieties with multiple resistance genes if donors of resistance genes and specific molecular markers of these genes are available. The breeding program for winter soft wheat at the Samara Research Institute of Agriculture uses donors of genes Lr3, Lr9, Lr10, Lr26, Lr34, Lr39(41) and others, as well as a replaced chromosome 6Agi2 of wheatgrass intermediate, whose direct donors are spring soft wheat varieties ‘Tulaikovskaya 10’ and ‘Tulaikovskaya Zolotistaya’. As a result of hybridization and subsequent individual selection, promising breeding material of winter soft wheat was created in Samara Research Institute of Agriculture for further identification of valuable genotypes that contain genes of resistance to leaf rust and chromosome 6Agi2, using molecular markers.
THE EFFECTIVENESS OF THE USE OF COMPLEX FERTILIZERS ON THE YIELD AND GRAIN QUALITY OF SPRING WHEAT, BARLEY AND WINTER RYE
Authors:   Samara Federal Research Center of the Russian Academy of Sciences, Naumetov R.V.
Published: April 2024

The research was comparative estimation of the effectiveness of the application of compound fertilizers monoammonium phosphate, nitroammofosa and double superphosphate at sowing in rows on the productivity and the quality of the grain production of spring wheat , barley and winter rye on fertilizer and fertilized background. Research findings suggest that the introduction of double superphosphate in rows during sowing grain on soils with a high content of phosphorus in the background without nitrogen fertilizer inefficiently. The introduction of complex fertilizers in rows at crop fertilizer more effectively at the background. Row fertilizer has a positive impact on the quality of the grain. The most high-quality grain is formed by the rows of compound fertilizers (nitroammofosa).
Identifying children’s environmental health risks, needs, misconceptions, and opportunities for research translation using social media
Authors: Larkin Andrew , MacDonald Megan , Jackson Dixie , Kile Molly L. , Hystad Perry
Published: April 2024

As part of the Advancing Science, Practice, Programming, and Policy in Research Translation for Children’s Environmental Health (ASP3IRE) center, machine learning, geographic information systems (GIS), and natural language processing to analyze more than 650 million posts related to children’s environmental health are being used. Using preliminary analyses as examples, this commentary discusses the potential opportunities, benefits, challenges, and limitations of children’s health social media analytics. Social media contains large volumes of contextually rich data that describe children’s health risks and needs, characteristics of homes and childcare locations important to environmental exposures, and parent and childcare provider perceptions, awareness of, and misconceptions about children’s environmental health. Twenty five million unique conversations mentioning children, with likes, views, and replies from more than 33 million X (formerly Twitter) users were identified. Many of these posts can be linked to traditional environmental and health data. However, social media analytics have several challenges and limitations. Challenges include a need for interdisciplinary collaborations, selectivity and sensitivity of analytical methods, the dynamic, evolving communication methods and platform preferences of social media users, and operational policies. Limitations include data availability, generalizability, and self-report bias. Social media analytics has significant potential to contribute to children’s environmental health research and translation.
Strategie: Dokumente für alle
Authors: Funke Sylvia
Published: April 2024

Digitalisierte Prozesse sind in fertigenden Unternehmen hochkomplexen Produkten ein zentraler Faktor für wirtschaftlichen Erfolg. Die Otto Bihler Maschinenfabrik, Weltmarktführer auf dem Gebiet der Stanzbiegetechnik, hat ihr Dokumentenmanagement auf den neuesten Stand gebracht – und sorgt damit für kürzere Wege nah am Geschäftsprozess.
Attention and feature binding in the temporal domain
Authors: Zivony Alon , Eimer Martin
Published: April 2024

Previous studies have shown that illusory conjunction can emerge for both spatially and temporally proximal objects. However, the mechanisms involved in binding in the temporal domain are not yet fully understood. In the current study, we investigated the role of attentional processes in correct and incorrect temporal binding, and specifically how feature binding is affected by the speed of attentional engagement. In two experiments, participants searched for a target in a rapid serial visual presentation stream and reported its colour and alphanumeric identity. Temporal binding errors were frequent. Critically, when participants reported the identity of a distractor instead of a target, they were also more likely to report the colour of this distractor. This association was observed both within and between individuals. These findings suggest that attentional engagement facilitates the binding of temporally co-occurring features. We discuss these results within a ‘diachronic’ framework of selective attention, and also consider other factors that contribute to temporal binding errors.
Detecting inattentive respondents by machine learning: A generic technique that substitutes for the directed questions scale and compensates for its shortcomings
Authors: Ozaki Koken
Published: April 2024

Web surveys are often used to collect data for psychological research. However, the inclusion of many inattentive respondents can be a problem. Various methods for detecting inattentive respondents have been proposed, most of which require the inclusion of additional items in the survey for detection or the calculation of variables for detection after data collection. This study proposes a method for detecting inattentive respondents in web surveys using machine learning. The method requires only the collection of response time and the inclusion of a Likert scale, eliminating the need to include special detection items in the survey. Based on data from 16 web surveys, a method was developed using predictor variables not included in existing methods. While previous machine learning methods for detecting inattentive respondents can only be applied to the same surveys as the data on which the models were developed, the proposed model is generic and can be applied to any questionnaire as long as response time is available, and a Likert scale is included. In addition, the proposed method showed partially higher accuracy than existing methods.
HUBUNGAN INDEKS MASSA TUBUH DENGAN KUALITAS HIDUP PADA PASIEN RHEUMATOID ARTHRITIS DI PUSKESMAS BOTANIA BATAM
Authors: Gantoro Brain , Esmiralda Nopri , Sakinah Asrida
Published: April 2024

Background: The problem of nutritional status is closely related to a person's quality of life. Because if someone can achieve a good quality of life, then his life will lead to prosperity. Quality of life is the result of a person's benchmark in health status which is influenced by social, economic and cultural backgrounds. A good quality of life can direct us to opportunities to be free from various diseases, including Rheumatoid Arthritis. Methods: This study took an observational analytic research design with an approach cross sectional. This research was conducted at the Puskesmas Botania Batam in August 2023. The sample in this study was 60 respondents. By sampling technique is the accidental sampling. To find out the relationship between Body Mass Index and Quality of Life, the data analysis used was a test Pearson Chi Square. Results: Out of a total of 60 respondents, the majority of respondents had obesity BMI I as many as 21 respondents (34%), and the least number was obesity BMI II as many as 4 respondents (7%). Respondents with a good quality of life were 27 respondents (45%), while those with a bad quality of life were 33 respondents (55%). QThere is a relationship between Body Mass Index and Quality of Life with a p value of 0.002 (p <0.05). Conclusion: Based on the results of this study, it can be concluded that the higher/lower a person's BMI, the poorer their quality of life is.
Influence of Blade Number on the Hydrodynamic Performance of a Propeller-Type Axial Turbine for In-Pipe Installation
Authors: Oscar Monsalve  , Sebastián Velez-Garcia  , Josept David Revuelta-Acosta
Published: April 2024

In-pipe hydraulic turbines are a promising energy-harvesting technology. Recent studies have demonstrated a strong influence of the turbine blade number on the performance of an axial propeller-type turbine. However, limited research has been dedicated to turbine diameters less than 100 mm. Therefore, this research aimed to determine the effect of the number of blades on the hydrodynamic performance of a 75.3 mm diameter axial propeller turbine for in-pipe installation. A parametric numerical study was performed by varying the angular velocity from 1600 to 3800 rpm and the number of blades from 2 to 6. Results identified an inverse correlation between the hydraulic efficiency of the turbine and its blade number and a direct correlation between the pressure head and the turbine torque. Furthermore, the performance showed hydraulic behavior comparable to those found in literature, confirming a similar hydraulic behavior as turbines with diameters exceeding 100 mm. Additionally, the turbine’s internal flow behavior was analyzed by visualizing the vortex structure using the Q-criterion. Lastly, this study provides a deeper understanding of the effect of the number of blades on the hydrodynamic performance of an axial turbine for in-pipe installation.
MHD Casson Fluid Flow in Stagnation-Point over an Inclined Porous Surface
Authors: Leelavathi R  , Seethamahalakshmi Vyakaranam  , Rao TS  , Venkata Ramana Reddy Gurrampati  , Abayomi Samuel Oke
Published: April 2024

Motivated by the need to comprehend and optimize complex fluid flow phenomena in various engineering and industrial applications, this paper investigates the magnetohydrodynamic (MHD) Casson fluid flow characteristics in the vicinity of a stagnation point over an inclined porous surface. The study addresses the interplay of permeability, viscous dissipation, buoyancy, and volumetric heat source, chemical reaction of the diffusion species, thermal slip, and obliqueness at the bounding surface. The governing equations are transformed into a dimensionless form using appropriate similarity transformations. The resulting nonlinear ordinary differential equations are solved numerically using the fourth-order Runge-Kutta method, coupled with the shooting technique as coded into the bvp4c solver of MATLAB 2021a. Findings from this study show that instability arises due to reduced velocity at low permeability, and Biot number enhances the Newtonian cooling at the surface, a requirement for the design of heat exchangers.
Enhancing Electric Vehicle Battery Thermal Management using Phase Change Materials: A CFD Analysis for Improved Heat Dissipation
Authors: Divyashetty  , Mohammad Zuber  , Chethan K N  , Laxmikant G Keni  , Irfan Anjum Badruddin Magami  , Chandrakant R Kini
Published: April 2024

The adverse environmental issues and climate change has compelled world to shift to renewable energy systems. Conventional IC engines are the major contributor for air pollution which is the main cause for the global warming. Therefore, EVs (Electric Vehicle) are the future of the automotive industry. The important issues faced by EVS are battery heat generation. Hence in order to remove heat efficiently from the EV battery CFD analysis of a passive thermal management system using PCM for Li-ion batteries is studied for three different discharge rates. Compared to bare cell, the cell with passive BTMS reduces the maximum temperature rise by 2%, 2.1% and 1% at discharge rates of 1.5 C, 1.0 C and 0.5 C respectively thus implying that the BTMS adopted is effective in removing heat from the surface of the cell.
Prospective Analysis of Acute Encephalitis Syndrome: Clinical Characteristics and Patient Outcomes in a Tertiary Care Pediatric Setting
Authors: Duddumpudi Sivagna , Nazir Parol Nazaf , Padman Sachin , Reddy I Venugopal
Published: April 2024

Background: One of the most frequent neurological emergencies in pediatrics, central nervous system infections cause a considerable amount of death and morbidity. Especially in newborns, the symptoms are frequently modest, therefore a strong index of suspicion is needed to make the diagnosis. Inadequate or delayed treatment may result in fatalities or other severe consequences.  Objective: To ascertain the frequency, clinical characteristics, and etiological makeup of kids hospitalized in tertiary PICU due to acute encephalitis syndrome. Results of kids referred to tertiary PICUs with acute encephalitis symptoms.  Study Design: Hospital based prospective study.  Participants: Children with AES from one month up to 18 years of age admitted in PICU of hospitals.  Intervention: Thorough clinical assessments were completed, and blood samples will be sent for various baseline biochemical analyses. In every instance, samples of blood and urine were sent for sensitivity and culture while adhering to strict aseptic protocol. In every incidence of fever with altered sensorium, neuroimaging and CSF analysis will be carried out.The history, clinical examination, and pertinent laboratory investigations are used to determine the etiology of AES.  Results: Out of the one hundred cases that were examined, five had J.E., thirty had rickettsia, twenty had dengue, one had varicella, twelve had COVID-19, five had measles, four were pyogenic, one had tuberculosis, twelve had ADEM, and nine were undiagnosed. A total of 45 patients were lost to follow-up throughout the follow-up period. Of the patients, 16 had hearing loss, 10 had speech loss, 15 had extra pyramidal abnormality, 21 had behavioral abnormality, and 21 had cranial nerve impairments.  Conclusion: AES is a persistent public health issue that requires immediate attention, as well as cooperation and support from other sectors. Strengthening primary health care is urgently needed to provide access to both routine and emergency care, both of which are essential for better results.
Selfsupport Assistive Device for Visually Impaired People Using Iot
Authors: Devanathan M. , Abinaya K. , Akshaya M. , Amoha J. , Sathya R.
Published: April 2024

Assistive device tailored for visually impaired individuals to navigate streets, public spaces, and seeking aid independently. It outlines the key components of the system, including a microcontroller board, various sensors, cellular communication, GPS modules, IoT technology, and a Bluetooth instruction provider are showcasing the technological backbone supporting its functionalities. The system primarily employs sensors to track the user's path and detect obstacles, alerting them through sound and wrist vibrations. Notably, it also notifies nearby individuals when assistance is required and sends alerts, alongside the user's location, to registered family members and caregivers via phone messages. Furthermore, registered phones can retrieve the system's location and enable real-time tracking of VIP. The abstract underscores the system's thorough testing and verification process, ensuring its functionality effectiveness. Lastly, it emphasizes the system's superiority over existing solutions and anticipates its significant positive impact on enhancing the quality of life for visually impaired individuals.
Design Of Tangentially Fired Pulverized Coal Burner Nozzle For Enhanced Erosion Resistance
Authors: Singh Kewal , Singh Grewal Navdeep , Singh Sukhdeep
Published: April 2024

Erosion-induced failure of pulverized coal burner nozzles (PCBN) presents a significant challenge in pulverized coal-based thermal power plants. Investigations have identified multiple causative factors leading to the accelerated degradation and consequent reduced lifespan of PCBN. These factors include the erosive impact of solid fuel particles carried at high velocities and angles, as well as the high-temperature conditions within the combustion zone. To mitigate erosion, strategies often revolve around enhancing material resistance or optimizing aerodynamic profiles to minimize drag forces. This study employs Computational Fluid Dynamics (CFD) via the CFX code to model and analyze the erosion dynamics within PCBN. By adjusting the geometry of the inner plates within the PCBN, simulations indicated a notable improvement in erosion resistance. The optimized design achieved this by expanding the flow area between the innermost bifurcated plates without altering their angle, leading to a more uniform flow distribution and favorable velocity and pressure gradients. These modifications have the potential not only to prolong nozzle life but also to contribute to more efficient combustion in tangentially fired furnaces.
Crowdsourcing: An Education Framework
Authors: Kushnoor Amarnath , Desai Preeti , Lingaappa B. Shambu
Published: April 2024

Crowdsourcing is one of the ancient practices which are adopted in varied ways. The primary advantage of it seems to relatively low cost and ability to scale. Considering this competitive advantage that it is enabled in the domain specific by the alteration of methodology as largely proposed by scholars. The generalized education perspective framework is not widely defined. This paper attempts in a wider perspective to bring out a generalized education framework for the crowdsourcing platform. Here the paper views the Crowdsourcing practice to be one of the alternative means to traditional learning and attempts to propose a model.
Implementation of a Real Estate Management System using Photogrammetry Method Allowing 3d Navigation of Buildings
Authors: Gerald Anicet Bikie , Hile Bertrand Dongmo , Nkasse Alain Aba , Boubouama Aime Elime , Okomba Bessemer Amboulou , Achab Mohammed
Published: April 2024

The objective of this study is to evaluate how the use of virtual representations of buildings, created through photogrammetry, can improve the efficiency and effectiveness of the real estate management system. In this regard, investigations have been conducted with stakeholders in the real estate sector, such as real estate agencies and tenants, to gather valuable information on real estate management. For illustration purposes, we have chosen to model the NASPW gymnasium. We have implemented a real estate management approach based on the photogrammetry method. To achieve our objective, we describe each step of the process, from the preparation of the photogrammetric mission (planning and simulating the mission) to data acquisition, carried out using a Phantom 4 Pro drone for aerial images and a Nikon D300 digital camera for interior shots. The data processing phase is also crucial, and it was done using the Agisoft Metashape software. We provide detailed explanations of the different steps in this process, which include image quality estimation, image alignment, georeferencing, dense point cloud generation, 3D mesh creation, and orthophoto generation.
COMPARATIVE ANALYSIS OF THE FINANCING INSTRUMENTS EMPLOYED BY THE COMPANY
Authors:   Financial University under the Government of the Russian Federation, VOSKANIAN ROZA O.
Published: April 2024

The regulation of multi-voting shares in the Russian market in 2022 highlights their importance in comparison to other securities used for company financing. The author defines the limits of use and distinguishes the qualitative features of multi-voting shares, which are similar or different from other securities that have become widespread in the Russian stock market. The contradictions of the properties of multi-voting shares proposed by the legislator and international practice are determined. Multi-voting shares could be a new type on the Russian market without being a separate category.
DEVELOPMENT OF FINANCIAL MANAGEMENT OF ORGANIZATIONS IN THE CONTEXT OF FACTOR INTEGRATION ENDOGENOUS AND EXOGENOUS ENVIRONMENT
Authors:   Ural State University of Economics, PIONTKEVICH NADEZHDA S.
Published: April 2024

The scientific article proposes a scientific idea of the development of financial management of organizations under the mutual influence of endogenous and exogenous factors. The endogenous environment that influences the development of corporate finance is interpreted as the prevailing internal organizational, economic and financial conditions for the functioning of organizations associated with a certain state of objects of financial and non-financial management, the hierarchy of the business structure, as well as the peculiarities of interaction with management entities of different levels. Factors of the exogenous environment that affect the development of financial conditions for the activities of organizations are considered in the context of factors of direct and indirect impact.
The Cepheid Distance Scale: A Novel Method for Obtaining Mean Magnitudes from Single-epoch Observations
Authors: Madore Barry F. , Freedman Wendy L. , Owens Kayla
Published: April 2024

We present a novel technique for mapping single-phase observations of Cepheids in any given band into their time-averaged values, using strong priors on the known interrelations of the multiwavelength widths of Cepheid period–luminosity (PL) relations, combined with the physical ordering of individual Cepheids within and across the instability strip, as a function of temperature (or radius). The method is empirically calibrated and tested using high-precision published multiwavelength observations of Cepheids in the LMC. The example, given herein, takes a single-epoch B-band PL relation and transforms those random-phase observations to within ±0.05–0.06 mag of their time-averaged values. For high-precision single-phase data points, this method can transform single-phase magnitudes into mean magnitudes (without additional observations), bringing the statistical error budget for the PL relation at that wavelength down to the systematic floor. This technique is of particular importance for use with space-based facilities (e.g., Hubble Space Telescope or JWST) where limits on the availability of telescope time preclude dense phase coverage, often resulting in only single-epoch observations being available.
The Long-term Photometric Behavior of 39 Semiregular Variable Stars
Authors: Cadmus Robert R.
Published: April 2024

Photometric measurements of the light and color variations of 39 semiregular variable stars over a 30 yr time interval have been used to explore the systematics of these variations. These results show the complex nature of the frequency compositions of the light curves of these stars. The frequencies present in the light curves tend to be harmonic in nature, suggesting that both modes of pulsation and shape effects may be involved and the nature of the variations indicates that stochastic excitation is involved.
Evolution of Magnetic Field of the Quasar 1604+159 at parsec Scale
Authors: Hu Xu-Zhi , Hong Xiaoyu , Zhao Wei , Chen Liang , Wang Wei-Yang , Wu Linhui
Published: April 2024

We have analyzed the total intensity, spectral index, linear polarization, and rotation measure (RM) distributions at the parsec scale for the quasar 1604+159. The source was observed at 5.0, 8.4, and 15.4 GHz in 2002 and 4.6, 5.1, 6.0, 7.8, 12.2, 15.2, and 43.9 GHz in 2020 with the American Very Long Baseline Array (VLBA). Combining the polarization results of Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments at 15 GHz from 2009 to 2013, we studied the evolution of magnetic field at the parsec scale for the source. We detected a core-jet structure. The jet extends to the distance of ∼25 mas from the core at a direction of ∼66° north by east. The shape of the jet derived from 15 GHz data varies slightly with time and could be described by a straight line. Based on the linear polarization distribution in 2002, we divided the source structure into the central region and the jet region. In the jet region, we find the polarized emission varies with time. The flatter spectral index values and electric vector position angle direction indicate the possible existence of shocks, contributing to the variation of polarization in the jet with time. In the central region, the derived core shift index k

r
values indicate that the core in 2002 is close to the equipartition case, while it deviated from the case in 2020. The measured magnetic field strength in 2020 is 2 orders of magnitude lower than that in 2002. We detected transverse RM gradients, evidence of a helical magnetic field, in the core. The polarized emission orients in general toward the jet direction in the core. At 15 GHz, in the place close to the jet base, the polarization direction changes significantly with time from perpendicular to parallel to the jet direction. The evolution of RM and magnetic field structure are potential reasons for the observed polarization change. The core ∣RM∣ in 2020 increases with frequency following a power law with index a = 2.7 ± 0.5, suggesting a fast electron density falloff in the medium with distance from the jet base.
ALMA Confirmation of Millimeter Time Variability in the Gamma-Ray Detected Seyfert Galaxy GRS 1734-292
Authors: Michiyama Tomonari , Inoue Yoshiyuki , Doi Akihiro , Yamada Tomoya , Fukazawa Yasushi , Kubo Hidetoshi , Barnier Samuel
Published: April 2024

GRS 1734-292 is a radio-quiet galaxy, exhibiting neither intense starburst nor jet activities. However, Fermi-LAT detected this object in the GeV band. The origin of nonthermal activity in this Seyfert galaxy is an intriguing question. We report Atacama Large Millimeter/submillimeter Array observations of GRS 1734-292 at frequencies of 97.5, 145, and 225 GHz. These observations confirmed the millimeter excess within the central ⪅100 pc region and its time variability based on two separate observations conducted 4 days apart. The timescale of variability aligns with the light-crossing time for a compact source smaller than <100 Schwarzschild radius. If we take into account the power-law synchrotron emission originating from the corona (i.e., the hot plasma located above the accretion disk), the millimeter spectrum indicates the coronal magnetic field of ≈10 G and the size of ≈10 Schwarzschild radius. An alternative explanation for this millimeter emission could be synchrotron and free–free emission from disk winds (i.e., fast wide-opening angle outflows from the disk) with the size of ≈10 pc, although it may be difficult to explain the fast variability. Future millimeter observations with higher resolution (<0.″01) will enable the differentiation between these two scenarios. Such observations will provide insights into the acceleration sites of high-energy particles at the core of active galactic nuclei.
The GMRT High-resolution Southern Sky Survey for Pulsars and Transients. VII. Timing of the Spider Millisecond Pulsar PSR J1242–4712, a Bridge between Redback and Black Widow Pulsars
Authors: Ghosh Ankita , Bhattacharyya Bhaswati , Lyne Andrew , Kaplan David L. , Roy Jayanta , Ray Paul S. , Stappers Ben , Kumari Sangita , Singh Shubham , Sharan Rahul
Published: April 2024

We present a timing solution for the 5.31 ms spider millisecond pulsar (MSP) J1242−4712, discovered with the GMRT. PSR J1242−4712 orbits a companion of minimum mass 0.08 M
⊙ with an orbital period of 7.7 hr and occupies a relatively unexplored region in the orbital period versus companion mass space. We did not detect gamma-ray pulsations for this MSP, and also could not identify the optical counterpart for PSR J1242–4712 in available optical/near-infrared data. The profile of J1242−4712 evolves with frequency, showing a clear single component at lower frequencies and a three-component profile at 650 MHz. PSR J1242−4712 eclipses for a very short duration near superior conjunction (orbital phase ∼ 0.23−0.25) below 360 MHz. Moreover, significant dispersion measure delays and errors in the pulse times of arrivals are observed near inferior conjunction (orbital phase ∼ 0.7), along with an observed eclipse in one epoch at 650 MHz. Observed eclipses and significant orbital period variability suggest that PSR J1242−4712 is possibly not a helium star−white dwarf binary, but has a semi- or nondegenerate companion, indicating that this is a “spider” MSP lying in a region between typical black widows and redbacks. This system may represent a distinct category of spider MSPs, displaying characteristics that bridge the gap between known black widow and redback MSPs.
A multitaxa approach to biodiversity inventory in Matela protected area (Terceira, Azores, Portugal)
Authors: Sousa Mariana , Lamelas-López Lucas , Elias Rui , Gabriel Rosalina , Borges Paulo
Published: April 2024

This manuscript is the first contribution of the project, “Matela – uma ilha de biodiversidade” (“Matela - an island of biodiversity”), that aims to restore the native vegetation within the Azorean Protected Area of the Terceira Island Nature Park known as the "Protected Area for the Management of Habitats or Species of Matela" (TER08), situated on Terceira Island, the Azores Archipelago, Portugal. This small fragment of native forest, positioned at a low-medium altitude (300-400 m a.s.l.), is facing some conservation impacts as a consequence of the spread of different invasive exotic plant species, mainly Pittosporum undulatum, Rubus ulmifolius and Hedychium gardnerianum. The database we present encompasses diverse taxonomic groups, including bryophytes, vascular plants, arthropods, birds and mammals. It is derived from intensive sampling campaigns conducted in 2022, but some data from a previous vascular plant survey in 2015 were also included. The objective of this study was to provide an updated inventory of bryophytes, vascular plants, arthropods, birds and mammals within this protected area. In this way we are providing the reference conditions necessary for the monitoring of the impacts of the current ongoing restoration efforts within the project “Matela - an island of biodiversity”. Whenever feasible, the present inventory is juxtaposed with historical data from previous surveys conducted in Matela.

In the realm of bryophytes, our analysis revealed the presence of 75 taxa, comprising 44 mosses and 32 liverworts. Amongst these, 71 were indigenous, while three remained indeterminate and one, Campylopus introflexus, was identified as invasive. A comparison with previous historical data revealed a decrease in species richness, which was partially counterbalanced by the discovery of 23 new recorded species in the area.

Regarding vascular plants, we distinguished 54 species, comprising 28 indigenous and 26 introduced taxa. Almost 80% of the inventoried species (n = 43) were newly documented in Matela.

The study of arthropods encompassed a total of 103 taxa. Within the realm of soil arthropods, we documented eight indigenous and 25 introduced taxa, witnessing the disappearance of endemic species alongside a substantial increase in introduced ones between 2002 and 2022. Canopy arthropods, totalling 36 indigenous and 18 introduced taxa, exhibited few changes when compared with data from 2002. SLAM traps captured 24 indigenous and 15 introduced arthropod taxa and no historical data are available for comparison.

As for avian species, we noted 12 indigenous birds and one introduced species, confirming the presence of most of the historical recorded native species.

The mammalian census revealed eight introduced species, setting new precedents for Matela, alongside the identification of one endemic species: the Azorean endemic bat Nyctalus azoreum.