bluuebunny/crossref_metadata_2025 huggingface dataset:
Data-Driven Decision Making: A Framework for Integrating Workforce Analytics and Predictive HR Metrics in Digitalized Environments
Authors: Tuli Ferdouse Ara , Varghese Aleena , Ande Janaki Rama Phanendra Kumar
Published: March 2024

This research offers a methodology for combining predictive HR indicators and workforce analytics to support data-driven HRM decision-making in digitalized settings. The study investigated the difficulties, prospects, tactics for executing, and optimal approaches related to the amalgamation of workforce analytics and predictive HR metrics. Additionally, the study sought to ascertain the policy ramifications for both firms and legislators. The study thoroughly analyzed prior research and secondary data sources to investigate the topic. The significance of data quality and governance, organizational alignment and leadership support, cooperation and cross-functional engagement, training and development, piloting and iterative improvement, and ongoing learning and adaptation are among the key conclusions. To facilitate the adoption and optimization of data-driven decision-making in HRM, policy implications include the requirement for data governance frameworks, training and development programs, regulatory frameworks, and incentives for innovation. This framework offers insightful analysis and helpful recommendations for firms using data to improve workforce management procedures and foster organizational performance in digitalized settings.
Assessing the Regional Economic Benefits of Public Investments: A Replicable Methodology and Case Study Application to the Dominican Republic
Authors: Anton Pablo , Alemany Nassim , Schloeter Luis
Published: March 2024

This paper presents a comprehensive methodological framework designed to assess the regional economic benefits of public investments. Recognizing the challenges of limited resources and data, especially at the regional level, the study aims to enhance operational efficiency in the early phases of investment projects. The framework supports more informed decision-making by facilitating a rapid assessment of potential benefits, using a data-driven approach that leverages input-output analysis to refine understanding of local economic linkages. Adaptable to various regions with readily available economic statistics, the tool requires minimal input. In collaboration with the Ministry of Economics, Planning, and Development and the Ministry of Tourism the framework was applied to the Ozama region in the Dominican Republic, yielding a pilot assessment tool. The model elucidates supply chain connections across fifteen economic sectors. A case study of the IDB's investment in Santo Domingo's Colonial City demonstrates the tool's utility, revealing significant localized GVA and employment impacts. This study highlights the framework's potential to aid early-stage decision-making and cost-benefit analyses. While the current version focuses on short-term impacts, future enhancements aim to address long-term effects and additionality, further broadening the tool's applicability.
Pronóstico de la precipitación en los Andes tropicales: lecciones de las simulaciones de convección permitida
Authors: Martínez J.  Alejandro , Rendón María L. , Buriticá-Ruíz Luisa F. , Giraldo-Cárdenas Santiago , Arias Paola A.
Published: March 2024

Se presentan los resultados de la evaluación de 625 pronósticos diarios de precipitación en una parte de los Andes colombianos, realizados con el modelo Weather Research and Forecasting (WRF) entre 2020 y 2022. Las simulaciones se hicieron en modo de “convección permitida” usando un espaciado de cuadrícula de 4 km. El desempeño del WRF se contrastó con los pronósticos del Global Forecasting System (GFS) y con datos basados en observaciones. Los pronósticos con el WRF produjeron un patrón promedio de máximos nocturnos en valles interandinos y tierras bajas similar al del Global Precipitation Measurement Mission (GPM). La precipitación diurna según el WRF tuvo lugar, sobre todo, en las montañas. Comparados con los de la GPM, los promedios estacionales evidenciaron una sobreestimación en las montañas y una subestimación en tierras bajas. Los sesgos y precipitaciones absolutas del GFS fueron de menos magnitud que los del WRF. Las correlaciones entre acumulados diarios del GPM y los pronósticos de ambos modelos tendieron a ser mayores en las temporadas secas, llegando a valores máximos de 0,62 y 0,70 con WRF y GFS, respectivamente. Los índices basados en tablas de contingencia fueron similares en el WRF y el GFS, con valores de Bias, FAR y POD cercanos a 1,1, 0,10 y 0,96, respectivamente. La inspección de dos eventos especiales de precipitaciones elevadas en sendos lugares de Antioquia estableció que tanto el WRF como varios de los modelos globales proveyeron pronósticos útiles hasta con 12 horas de anticipación. Sin embargo, las simulaciones de mayor resolución representaron mejor las estructuras y gradientes propios del terreno complejo de los Andes tropicales.
Modelo de la estructura interna del volcán Puracé y la Cadena Volcánica de Los Coconucos (Colombia), a partir de datos gravimétricos y magnéticos
Authors: Ponce Patricia , Ortega Adriana , Londoño John Makario , Monsalve María Luisa , Ospina Carlos , Galvis Beatriz , Alpala Jorge , Narváez Lourdes , Alpala Rosa , Arcos Darío
Published: March 2024

Se llevó a cabo un estudio de gravimetría y magnetometría en la zona de influencia del volcán Puracé y la cadena volcánica de Los Coconucos (Colombia), con el fin de obtener dos modelos geofísicos 2D de las principales estructuras geológicas presentes en el área estudiada. En 2017 se midieron 272 puntos con datos de gravimetría, magnetometría y coordenadas con el Sistema Global de Navegación por Satélite (GNSS por sus siglas en inglés) en la zona mencionada, condicionada por su topografía montañosa, vegetación densa de bosque alto andino y vías de difícil acceso. A partir de las anomalías gravimétricas y magnéticas obtenidas y con la información geológica disponible, se formularon dos modelos 2D con base en dos perfiles, uno paralelo al trazo del Lineamiento Coconucos y el otro perpendicular al primero, ambos pasando por el cono activo del volcán Puracé. La interpretación de estos modelos, en conjunto con la geología de la zona, permitieron modelar cuerpos que se proponen como las estructuras internas de la caldera de Chagartón, de los volcanes Pre-Puracé y el Puracé Actual y parte de las cámaras magmáticas de los otros centros eruptivos de la cadena volcánica de Los Coconucos. Estas estructuras volcánicas al parecer están separadas por límites o zonas de debilidad que sugieren fallas en profundidad por donde se emplazaron dichos cuerpos de magma. La configuración interna del volcán Puracé y los centros eruptivos cercanos, propuesta en este trabajo, también proporciona información importante para la interpretación de la evolución de la Cadena Volcánica de Los Coconucos.
Estructura termal en la sucesión de rocas metamórficas aflorantes en el sector Mogotes-San Joaquín, suroeste del Macizo de Santander, Colombia
Authors: García-Ramírez Carlos Alberto , Ariza-Ardila Valeria , Mantilla-Figueroa Luis Carlos , Cabanzo-Hernández Rafael
Published: March 2024

En el sector Mogotes-San Joaquín (SW del Macizo de Santander) aflora una sucesión de rocas metamórficas, cortadas por rocas ígneas y parcialmente cubiertas por rocas sedimentarias, con edades desde el pre-Cámbrico hasta el Mesozoico. Estas variedades litológicas están afectadas por familias de fallas, entre las cuales destaca la Falla Mogotes con dirección NW-SE. Esta falla define la estructura termal de la sucesión metamórfica presente, ya que pone en contacto dos secuencias metamórficas contrastantes en grado de metamorfismo y edad. Al norte de la Falla aflora una secuencia de rocas metamórficas de mayor grado de metamorfismo (filitas, cuarcitas y esquistos grafitosos), edad pre-Cámbrica, con presencia de biotita neoformada. Al sur de la Falla afloran rocas metamórficas de menor grado, de aspecto filítico, con máxima edad de depositación del Devónico Temprano y que hacen parte de la Formación Floresta metamorfizada. Otras rocas en el área corresponden a metacalizas impuras, metacalizas, metaareniscas, metagrauvacas, con edades desde Devónico Medio al Permo-Carbonífero. Las litologías tanto al norte como al sur de la Falla son cortadas por rocas ígneas de edad Triásico Tardío-Jurásico Temprano, que se extienden por el Macizo de Santander. Tres eventos metamórficos afectaron las rocas al norte de la Falla Mogotes. Evento M1 de carácter regional, con pico metamórfico en facies esquistos verdes, zona de la biotita (458°C en esquisto grafitoso, temperaturas obtenidas mediante el análisis de espectros microraman en grafito). Evento M2 de metamorfismo de contacto, en facies corneana anfibólica con cordierita y biotita como minerales del pico metamórfico. Evento M3, correspondiente a un metamorfismo de dislocación. Las rocas metamórficas al sur de la Falla de Mogotes se caracterizan por la ausencia de biotita y temperaturas de metamorfismo inferiores a 410°C.
Diseño de geometría para levantamientos de gravimetría y magnetometría con aprendizaje profundo
Authors: Martínez-Acevedo Sebastián , Khurama Sait , Mantilla-Figueroa Luis Carlos , Goyes-Peñafiel Paul
Published: March 2024

En la exploración geofísica, el análisis del terreno es fundamental para planificar la adquisición de datos de gravimetría y magnetometría. No obstante, en la actualidad dichos análisis requieren el uso supervisado de información secundaria extensa. Por este motivo, en este estudio se propone una metodología que utiliza el aprendizaje profundo para evaluar el impacto de la cobertura vegetal y la topografía en la adquisición geofísica. Se usó una red neuronal artificial perceptrón multicapa para considerar cinco variables terrestres, y una red neural convolucional para la clasificación automatizada de coberturas vegetales sobre imágenes satelitales. A partir de esto, se obtuvieron puntos para la localización de estaciones de levantamiento geofísico que cumplen con un criterio de favorabilidad por accesibilidad, distancias, restricciones por cuerpos de agua y coberturas boscosas. La geometría obtenida se evaluó en la exploración del Granito de Durania en Colombia, y los resultados se analizaron utilizando transectas de adquisición y modelado computacional de anomalías magnéticas y de gravedad. Finalmente, se aplicaron técnicas de interpolación donde el método Ponderación de Distancia Inversa (IDW) mostró la mejor imagen para interpretar la delimitación del cuerpo intrusivo.
Estimación de pérdidas de lodo a través de fracturas mediante modelamiento matemático y su validación mediante un modelo físico
Authors: Vargas-Silva Diego , Uribe-Joya Lorena , Calderón-Carrillo Zuly , Bernal-Olaya Rocío
Published: March 2024

Las pérdidas de fluido pueden ocurrir a través de formaciones fracturadas o en zonas permeables, especialmente cuando hay bajas presiones. Este evento incrementa los tiempos no productivos en operaciones de perforación, lo que aumenta los costos. Lo anterior genera la necesidad de entender la interacción entre el fluido de perforación y las fracturas presentes en la formación. Para ello, se propone una metodología que tiene dos enfoques, uno numérico basado en modelos reológicos y balance de la ecuación de movimiento, y uno físico basado en la teoría de escalado. Para el modelo numérico se plantean las ecuaciones que permiten calcular el perfil de velocidad en función de las propiedades del fluido y geometría de fractura. Para el modelo físico se toman muestras de roca reales, se construye la fractura con un ancho y geometría controlada, a través del cual se hace circular un lodo, cuyas propiedades fueron escaladas y determinadas en laboratorio. Los resultados del modelo físico y numérico fueron comparados para diferentes reologías y anchos de fractura, concluyendo que el modelo matemático sí representa el fenómeno de pérdidas especialmente para bajas viscosidades. Para altas viscosidades es necesario corregir por rugosidad, aun así, el resultado muestra una tendencia similar, confirmando que reproduce el fenómeno.
DERs-Load Flow Convergence Sensitivity Analysis Using Topological Reconfiguration
Authors: Lubo-Matallana Ulises , Marquez-Martínez Anny
Published: March 2024

During the electric power system (EPS) modelling with massive use of distributed energy resources (DERs) - distributed generation (DG), storage and other distributed technologies such as electric vehicles - simplified and ideal conditions are assumed for the active distribution network. From the grid side, these elements are modelled as absorption and injection of power and/or current. In this paper, using the model MV-Benchmarck System CIGRE Task Force C6.04, a comparative analytical straightforward algorithm of convergence limits on load flow based on sum of powers and sum of currents along the topological matrix has been simulated. The convergence sensitivity analysis was examined for 3 system characteristics: radial and meshed Configuration, DG penetration and R/X ratio, finding percentage differences of up to 6% convergence sensitivity by power hosting capacity between two -non-linear- methods used for load flow.
Energía transactiva: una revisión de conceptos y aplicaciones en el marco de la transición energética
Authors: Erazo-Caicedo David , Cusva-García Andrea , Quijano Nicanor , Jiménez-Estévez Guillermo
Published: March 2024

La alta penetración de los recursos renovables distribuidos requiere estrategias de integración que aseguren un equilibrio entre oferta y demanda. La energía transactiva (ET) comprende un conjunto de mecanismos capaces de lograr este objetivo utilizando el valor como parámetro operativo. Este artículo presenta una revisión del estado del arte en TE, con el objetivo de proporcionar al lector una visión general de conceptos y aplicaciones. Para lograr esto, el documento ofrece una revisión de las estructuras operativas y de mercado, con un enfoque particular en el papel de TE en la composición de los mercados energéticos locales. Además, se propone un análisis del concepto de valor en energía como elemento de unión entre dos temas actuales de interés académico: los sistemas multi-energéticos y el nexo agua-energía-alimentos. Finalmente, se muestran algunos proyectos piloto internacionales y nacionales que permiten identificar la validez práctica de los conceptos descritos.
Potential Use of Fryze’s Approach-Based Power Theories in Waveform Distortion Contribution Assessment
Authors: Garzón Camilo , Blanco Ana María , Pavas Andrés , Meyer Jan
Published: March 2024

This paper explores the potential of some remarkable power theories derived from Fryze’s approach to assessing waveform distortion contributions. The analysis is limited to a simplified system composed of one load and one voltage source connected by a point of common coupling. Finally, some keys to assess are proposed for two types of systems: strong networks (traditional distribution systems) and weak networks (islanded microgrids).
Carbon nanotubes grown by plasma enhanced chemical vapor deposition of acetylene in the presence of water vapor
Authors: Sancho-Tapia Júlia , Bertran-Sierra Enric , Ospina Rogelio
Published: March 2024

Carbon nanotubes can be synthesized using various techniques. This work aims to study the experimental process of growing carbon nanotubes via plasma-enhanced chemical vapor deposition (PECVD). Additionally, the study aims to calibrate the reactor and develop a LabVIEW code to introduce water into the process, enabling a water-assisted PECVD procedure. The obtained samples are evaluated through the analysis of SEM images and Raman spectra.
Changes in body posture parameters: a four-year follow-up study
Authors: Łabęcka Marta
Published: March 2024

Body posture is an alignment of its segments relative to each other in a certain way and the relations between them. Abnormalities in the alignment of body segments or the cooperation of systems may cause postural defects. Scientific evidence showed that children of school age are more exposed to abnormalities in body posture so posture should be monitored because it is a key aspect of their body's physical health. This study aimed to evaluate changes in body posture parameters in the frontal plane in the same children at 5 and then 9 years of age.
This four-year follow-up study included 67 children (29 girls and 38 boys) in preschool-age and school-age phases (the first examination at 5 years of age and the second examination at 9 years of age). Measurements of body weight and height were recorded. The computerized assessment of body posture was performed with the photogrammetric method (MORA 4 Generation). The normality of the distribution of variables was assessed with the Shapiro-Wilk test. Analysis of qualitative data was carried out using Pearson’s chi-squared test. The highest percentage of children were characterized by the deterioration in the position of the lower corners of the scapulae, taking into account the division into sex (respectively in girls 51.7 % and boys 50.0 %) and the analysis of the whole group (50.7 %). There were statistically significant differences in the position of the lower corners of scapulae (UL) between the first and second examinations in all examined children (p = 0.005). The difference in the height of the waist and in the position of the shoulders improved and deteriorated in a similar percentage in children (above 30-40 %).
Generally, an improvement in body posture was observed, however, the occurred abnormalities of body posture indicate the need to continuously monitor the children's posture and implementation of preventive and corrective measures.
Conhecimento da equipe de enfermagem acerca do Processo de Enfermagem em uma Maternidade Pública
Authors: Schulze Suzane Teuber , Friedemann Bianca , Duque Kristiane de Castro Dias , Mazon Luciana Maria , Winters Joanara Rozane da Fontoura , Siewert Josiane Steil , Freitas Maria Alice de , Kasper Maristel , Andrade Betina Barbedo de
Published: March 2024

Objetivo: identificar o conhecimento dos profissionais de enfermagem de uma maternidade pública de Santa Catarina, Brasil, acerca do Processo de Enfermagem. Método: estudo descritivo, com abordagem quantitativa, realizado no período de setembro de 2021 a abril de 2022. Foram aplicados questionários estruturados a 192 profissionais de enfermagem. Resultados: 57,3% dos profissionais entrevistados informaram conhecer o Processo de Enfermagem, sendo que 49,5% declararam ter recebido orientações acerca do tema em sua formação. De forma complementar 93,8% consideram importante desenvolver o Processo de Enfermagem em sua prática de trabalho e 94,5% afirmam que ele pode qualificar a assistência em enfermagem. Conclusão: é fundamental reconhecer o entendimento dos profissionais acerca do Processo de Enfermagem o que permite suscitar estratégias que contribuam para inovações e transformação dos saberes e práticas assistenciais da enfermagem.
 
Palavras-chave: Enfermagem; Processo de Enfermagem; Prática Clínica Baseada em Evidências; Enfermagem Materno-Infantil.
Discussão transdisciplinar em relação às políticas sociais de saúde voltadas à população prisional brasileira: avaliações e práticas na promoção em saúde
Authors: Almeida Neto João Beccon de
Published: March 2024

O presente trabalho procura discutir a formação e evolução da Política Nacional de Atenção Integral à Saúde das Pessoas Privadas de Liberdade (PNAISP), cuja política intersetorial entre Ministério da Saúde e Ministério da Justiça deve ser analisada de forma transdisciplinar. O direito ao acesso integral aos serviços de saúde também está previsto na legislação penal, em especial a partir da década de 1980 em nosso país. Mas o próprio histórico referente a formação institucional dos estabelecimentos prisionais traz diferentes dificuldades na oferta de serviços pela atenção básica como porta de entrada e inclusão de pessoas privadas de liberdade na atenção e cuidado. A partir de um levantamento bibliográfica e nas bases de dados do Goepresídios e no CNES, o presente trabalho procura analisar a evolução e estágio atual da formação da política de atenção as pessoas privadas de liberdade. Em razão da temática estereótipos que envolve a população atendida pelas equipes, importante que a temática esteja presente na formação dos profissionais, uma vez que intensifica os debates sobre atendimento humanizado.
 
Palavras-chave: Intersetorialidade; Prisões; Política de Saúde; Pessoa Privada de Liberdade; Acesso aos Serviços de Saúde.
Couple Stress Fluid Flow Through a Porous Media Past A Solid Sphere
Authors: Chandrashekhar D. V.
Published: March 2024

A steady, two-dimensional, incompressible couple stress fluid flow over a rigid sphere of radius ‘a’ surrounded by infinite porous region specifying a constant velocity away from the boundary is considered. An exact solution is found for the governing equations which leads to the expression for the stream function and shearing stress. The impact of couple stress parameter and porosity on the flow patterns is examined through streamlines. Also shear stress is computed for various values of couple- stress parameter and porous parameter. The obtained results reveal that as coupling stress parameter increases for fixing the porosity, streamlines are symmetric and meandered near the rigid sphere. But for fixed coupling stress parameter and increase in porous parameter cause the streamlines to move away from the solid sphere. Also, the dimensionless shear stress increases as couple-stress parameter intensifies for fixed porous parameter and vanishes at two stagnation points. The amplitude of the shearing stress raises with raise in porous parameter for fixed coupling stress parameter.
A Preparation and Performance Investigation of Al2O3, TiO2 and GR Nanoparticles Dispersed Waste Fish Oil (WFO) Biodiesel
Authors: Shivaramu H. T. , Vignesh Nayak U. , Avven K. P. , Nandan  , D'Souza Irwin Felix , Santhosh Kumar T. C.
Published: March 2024

In the present work, an attempt has been made to improve the combustion of diesel oil. Biodiesel derived from waste fish oil along with ethanol was used for this purpose. The esterification process was undertaken to synthesize the biodiesel. TiO2, Graphene (Gr), and Al2O3 were added to the diesel blends to improve the turbulence in the engine. The fuel mixture consisted of 20% waste fish oil, 5% ethanol, 50 ppm of particulate matter and the rest was commercially available diesel oil. The magnetic stirring method was adopted to prepare the mixture. The B20-Al2O3 biodiesel had a viscosity of 4.99 cSt and a density of 0.875 gram/cc. The flash point was found to be the least for the ethanol added biodiesel and it increased in the case of the nanoparticle added biodiesel. Heavy mining engines like generators, compressors, and locomotives can run on the produced biodiesel as an alternative fuel.
Experimental Investigation of Welding Parameters On Mild Steel Using Metal Active Gas Welding
Authors: Kumar Ranjan , Biswas Sumana , Das Somnath , Ershad Md.
Published: March 2024

Gas shielded welding is a widely applied fabrication processes in manufacturing industry. The present study will elucidate on an investigative approach to find the mechanical properties, influenced by several input parameters like welding current, voltage and wire spool speed in the Metal Active Gas Welding (MAG) of Mild Steel. Taguchi’s L9 orthogonal array has been employed to analyse the process parameters. The levels of consequences of input parameters were investigated by applying analysis of variance (ANOVA). The microstructural orientations and mechanical properties of weld specimen are explored in this work. Welding current is an influential parameter to control tensile strength followed by welding voltage and federate of electrode. Furthermore, hardness of weld material has a greater effect of voltage including wire speed and current.
Metallic Sensor: Architecture, Protocols, and Functions Of Wireless Network
Authors: Budania Rahul Kumar
Published: March 2024

Metals such as silver, gold, platinum, palladium, and rhodium are widely used in automotive sensors and communication devices Sensor frameworks are comprehensively conveyed in a collection of purposes going from military to environmental and helpful examination. In various applications, for instance, target following, disaster area perception and gate crasher area, metallic sensor network habitually work in unfriendly and unattended circumstances. Subsequently, there is a strong prerequisite for getting the distinguishing data and identifying readings. In remote circumstances, an enemy can see the radio traffic too as can catch or between rupt the exchanged messages. Thusly, various shows and estimations don't simply work in that frame of mind without having palatable wellbeing endeavours. Consequently, security winds up one of the critical worries while illustrating security shows in resource constrained wireless sensor networks (WsNs). The ebb and flow paper are a fair endeavour to draw in the consideration of the peruses towards the design, conventions and elements of remote sensor network on the grounds that comprehensively conveyed in a variety of purposes going from military to biological and helpful examination. The present paper is an honest attempt to attract the attention of the readers towards the architecture, protocols and functions of metallic wireless sensor network because it is broadly conveyed in an assortment of uses going from military to ecological and restorative research.
Phytotoxicity Study of Biogenic Mono-Metallic and Bi- Metallic (Au-Ag) Alloy Nps
Authors: Banik Rupesh Dutta , Mandal Rakesh Kumar , Das Bubai , Pal Pritha , Baksi Sibashish , Ghosh Sabyasachi
Published: March 2024

Our findings of this study report the phytotoxicity assessment of biogenic bimetallic alloy (Au-Ag) NPs with monometallic counterparts (AgNPs and AuNPs) on Rice seed germination in respect of seedling growth and germination percentage. The phytotoxicity study of all three NPs on Rice seed indicates that seed germination percentage, root and shoot growth is not affected (upto 60 μg/ml) with biogenic (Au-Ag) NPs and AuNPs while, AgNPs had little phytotoxicity responses at higher concentration (40 μg/ml) level. So, ecological safe and sustainable biogenic alloy (Au-Ag) NPs promise potential nanocatalyst- based application for remediation of the hazardous dye from wastewater and other relevant areas.
Experimental Investigation on Fracture Toughness Of Hydrogen Embrittled Cu-Al-Be Shape Memory Alloy
Authors: Prashantha S.
Published: March 2024

Copper based Shape Memory Alloys (SMAs) possess good Shape Memory Effect (SME) and Superelasticity and the alloys are prone to corrosion due to atmospheric conditions. The SMAs absorb hydrogen which results in hydrogen embrittlement which affects the SMAs characteristics. The fracture toughness of the hydrogen embrittled alloys were estimated for compositions of ternary Alloy-Beryllium (0.47 by weight %) under uniaxial tensile testing (Mode –I type). Strain energy release rate and Stress Intensity factors were determined. 0.47 wt. % of Be in the SMA has the higher fracture toughness and the stress Intensity factor is directly proportional and strain energy release rate is inversely proportional with the increase in Crack length.
Bending, Tensile and Water Absoption Test of Corn Husk and Glass Fibre Reinforced Composite For Different Composition
Authors: Harshith B. U. , Arun T. S. , Prakrathi S.
Published: March 2024

Now a day, there is a huge trend in research and development of bio-based products which have a wide variety of replacement for naturally existing materials. The current research intends to determine the qualities of a composite laminate material consisting of maize husk and glass fibre. The composite is created by alternately overlaying glass fibre cloths on corn husk fibre layers. The required composition and thickness are achieved by calculation of number of the layer of each fibres. The epoxy resin and hardener by weight is mixed in the ratio 10:1 respectively. It is poured between the layers of the composite to generate adhesion. Hand lay-up technique is adopted in manufacturing of the material and the material is pressed for certain duration using nut and bolt template assembly allowing it for natural curing. The composite is been tested for bending, tensile and water absorption tests according to standards.
Microstructure-Based Finite Element Analysis Of Composites
Authors: Mallesh G. , Manjunatha H. S. , Pavankumar R.
Published: March 2024

Synthesized Al6061-TiB2 composite material by varying wt.% of TiB2 through In-situ process by adding 1.5% Mg to evaluate mechanical properties. It is noticed that the tensile, impact strength and hardness of the composites increases with increase in wt.% of TiB2 with reduces in ductility. Microstructure analyses were conducted through SEM to observe the distribution, presence and formation TiB2 particles and found that particles were homogeneously distributed and EDX analysis confirms the presence of TiB2. Later, SEM images are converted into 2-D models using Matlab, FE analysis was conducted using ANSYS software to evaluate the stress at the matrix and reinforcement interface. The information revealed from this study is useful in design and selection of Al 6061-TiB2 AMCs for various applications.
Experimental Investigations and Quasi Dimensional Modelling of Spark Ignition Engine Fuelled With Gasoline and Oxyhydrogen Gas Mixture
Authors: Kirankumar K. R. , Manjunatha Swamy K. M. , Manjunath H.
Published: March 2024

Oxy-hydrogen gas is a mixture of hydrogen and oxygen gas in 2:1 molar proportion. Oxy-hydrogen gas can be easily and economically produced from electrolysis of water by using dry cell electrolysers. Oxy-hydrogen gas is one of the alternative fuel options which can replace conventional fossil fuels like gasoline, diesel, etc., because of its high-octane number (>130) and moderate calorific value (21.4 MJ/kg). Current research work consists of both experimental and simulation parts. Experiments focussed on studying the performance and emission characteristics of spark ignition engine fuelled with gasoline (petrol) and dual fuel (gasoline + Oxy-hydrogen) mixture at variable load and constant speed condition with three different oxy-hydrogen flow rates. Comparative findings suggest that NOx emission and brake thermal efficiency increased by 1.75% and 800 PPM, respectively, at full load and at a flow rate of 1.54 lit/min. Carbon monoxide emission dropped by 0.25% at full load and at a flow rate of 1.54 lit/min. A two-zonequasi dimensional modelling of spark ignition engine was carried out in order to understand the combustion process efficiently. The predicted values accord well with the experimental data, with just a small variance. Commercially available software MATLAB R2021a is used to develop code for the engine simulation.
Influence of CNT Particle on Mechanical Properties Of Epoxy Composites
Authors: Malyadri T. , Suresh Kumar J. , Nagamadhu M.
Published: March 2024

In the recent years very much rapid development in the field of nanotechnology in many applications like structural, medical, biotechnology, agriculture etc. Polymers and polymer based composites attain a vital role in structural applications due to its light weight, easy of handling etc. However, during processing of polymer few problems associated with crosslinking of polymer bonds. These problems are overtaking by reinforcing Nano particles to the polymers. This research work focusses on studying the mechanical properties of epoxy polymer composites by reinforcing various weight percentage of Carbon Nanotube (CNT). The epoxy composite is prepared by magnetic stirring, mechanical stirring using hand layup method followed by post curing. The one-way ANOVA used to study the descriptive statistics influence of CNT reinforcement from 0.2 to 0.8 weight percentage in a 0.2 intervals. Further, Scheffe multiple comparison, Turkey HSD and Holm and Bonferroni multiple comparison tests are used to study the significant effect between the reinforcing percentage. It was observed that adding CNT to the composites improves the tensile strength and it is also observed from F and P values that reinforcement statically significant.
Metallurgical Microstructure Evolution of Friction Drilling With AL6061-T6 at Various Regions of Bushing Formation
Authors: Srilatha N. , Prasad Balla Srinivasa
Published: March 2024

Friction drilling is one of the non-conventional holes making process, it is a clean and chip-less operation which uses the frictional heat to create the hole on base materials. In any kind operations like machining of metal and mining of fuels the microstructure is composed with its various phases of size, variable form, and distribution (dendrites, grains, lamellae, precipitates, spherulites, pores, etc). Friction stir drilling technology is specifically designed for mining operations. The improved microstructure of the drilled holes ensures better load distribution and resistance to wear and tear. This translates into longer tool life, increased operational efficiency, and ultimately higher profitability for mining companies. The microstructure of metals plays a crucial role in the mining industry, primarily in two main aspects- extraction and processing of ores. In this microstructure of friction drilling hole of brittle cast materials like Al6061-T6, has been investigate with the help of optical microscope at various regions like Stirring Zone (SZ), Thermo Mechanical Affected Zone (TMAZ)and Heat Affected Zone (HAZ). Those zones are divided based on tool contact with work piece. It is observed that Al and Si particles are recrystallized structure. Due to thermal energy and forces acting on the material drilled hole contains few adhered at walls. At when compared with the HZA and TMAZ, SZ zone contains smaller mean particles are observed.
Study on Nanofluid Boundary Layer Flow Over A Stretching Surface by Spectral Collocation Method
Authors: Gayathri M. S. , Bhavya N. P. , Dinesh P. A. , Badachi Chandrashekar
Published: March 2024

The method of Spectral collocation is used to analyze the flowing Nano fluid layer in contact with a stretching surface for comprehensive information and thus to have its utility in industrial activities like the production of glass fibers, petroleum refining, hot rolling of metals, metal spinning etc. The spectral collocation model incorporates thermophoresis and Brownian motion phenomena to describe the fluid flow, fluid concentration and temperature profiles. A similarity solution has been presented for the governing equations of fluid momentum, concentration and temperature. The computational results are the function of Prandtl number (Pr), Lewis number (Le), thermophoresis and Brownian motion phenomena. The engineering quantities like thermophoresis parameter (Nt), Brownian motion parameter (Nb), buoyancy-ratio parameter (Nr) and reduced Nusselt number (Nu) and reduced Sherwood number (Sh) have tabulated corresponding to Prandtl number (Pr) and Lewis number (Le). The results of the current study thrown light on fluid velocity and heat transfer rates in the boundary layer. The numerous industrial products and manufacturing processes of superior quality can be exercised with the current studies.
Development of Fe (Iii) Sensor System Using Carbon Nanodots Derived From Plectranthus amboinicus
Authors: Smrithi S. P. , Kottam Nagaraju , Madhu G. M. , Prasanth G.
Published: March 2024

Carbon Dots (CDs) are a course of carbon nanomaterials just under 10 nm in dimension endowed with signature optical and electronic properties finding applications in sensors, photocatalysis, biomedical as well as optoelectronics. Single stroke hydrothermal synthesis method seems to have been adopted as the generation of nanocarbon dots from the Indian medicinal plant, Plectranthus amboinicus. Advanced characterisation methods such as UV- Visible absorption spectroscopy, fluorescence spectroscopy, Fourier transform infrared spectroscopy and HR TEM study have been adopted to confirm the structure of carbon nanoparticles. The dependence on the excitation of photoluminescence emission behaviour of CDs have been confirmed using PL spectroscopy. The reaction between the many metal ions with the photoluminescence of CDs are studied and found a striking interaction with Fe (III) ions. The equation from Stern-Volmer is used to study the mechanism of extinction involved in the sensing action of carbon dots and the threshold for recognition is found to be 0.30 μM. The existence of surface functional groups leading to the complexation with Fe (III) ions can primarily be the reason for the observed sensing application. The design and development of eco-friendly sensor systems for Iron metal which is also considered as an essential mineral for human health for its application in biomedical and environmental applications is discussed in this paper.
Efficient ELM Model With Parameter Optimization Using Pso Algorithms in the Prediction of Combustion Pressure Parameters of Dsi Engine Using Ethanol- Gasoline Blends
Authors: Shetty Suresh , Hampali Chennabasappa
Published: March 2024

The present study focused mainly on developing PSO based ELM model to predict cylinder pressure associated parameters. Performance of PSO-ELM model then compared with ELM model to obtain its credential. For training and testing the models, data has been acquired through experiments on a Twin Spark Ignition (TSI) gasoline engine using EGB as fuel. The various operating variables are treated as input data whereas cylinder pressure associated parameters are treated as output data for the model. The result of the proposed modelling study indicated that PSO-ELM model has obtained the best performance with lowest value of MSE, MAPE (%) and hidden layer size as compared to ELM model. Hence PSO-ELM results in an efficient model structure with great generalization performance. Further, it is also observed that PSO-ELM takes more time as it calls for an iterative procedure for searching the optimal solution as compared to ELM, which takes only a single epoch.
Experimental Investigation of Red Soil Blended With Bentonite and Lime as a Landfill Liner
Authors: Srinivasa H. N. , Muddaraju H. C. , Kavya G. N. , Shubha B. S.
Published: March 2024

To control the migration of contaminants generated from the leachate, the liners are used in landfills. Compacted clay liners are widely used as liner materials due to the low value of hydraulic conductivity and large attenuation capacity. In the present work, an experimental study on red soil which is locally available is amended with bentonite use as a liner material for efficient leachate containment in landfills. The primary objective of this work is to determine the geotechnical properties of red soil blended with bentonite as a material for liners. The clay liners performance primarily depends on hydraulic conductivity. The hydraulic conductivity of the red soil is higher than the recommended limit (i.e.>10-7cm/s). Commercially available bentonite was blended with red soil to decrease the hydraulic conductivity. The permeability tests and falling head tests were conducted on 5%, 10%, 15%, and 20% bentonite by weight blended with red soil to evaluate hydraulic conductivity. From the experimental studies, it is clear that the red soil blended with 15% bentonite has a hydraulic conductivity value less than the requirements of landfill clay liner(i.e.<10-7cm/s). However, the Compressive Strength (CS) of blended red soil with 15% bentonite was less than 200 kPa, which is less than the minimum CS required for liner material. Lime was added to enhance the CS of the soil mixture and further studies were carried out. Swelling behavior is the major problem that is to be addressed during and after the construction of landfills. This study also presents the swelling behavior of red soil blended with bentonite and other additives.
Mineral-Associated Medicinal Plants: Uncovering Their Anti-inflammatory Potential Through Comprehensive Exploration of Bioactive Compounds And Pharmacological Activities
Authors: Thorat Jayant C. , Dhamal Sonali V. , Dudheinamdar Priyanka V.
Published: March 2024

In recent years, there has been a growing interest in harnessing the potential of bioactive compounds sourced from specific wild plants with inherent natural anti-inflammatory properties. Inflammation is a complex physiological response crucial for defense against adverse stimuli. However, prolonged inflammation can give rise to a myriad of health issues, particularly when influenced by factors related to mineral exposure and processing. This review aims to provide an overview of the current status of knowledge regarding the anti-inflammatory plant-based drugs which have been derived from green tea, licorice, devil's claw, willow bark, chamomile, Salvia officinalis and Piper ovatum etc. Bioactive compounds such as catechins, glycyrrhizin, harpagoside, salicin, chamazulene, Lactones and alkaloids which are referred as secondary plant metabolites obtaining the pharmacological effects in human beings and animals. It has long been identified by the authors of various classical texts of Ayurveda and their properties, indications to inhibit the production of pro-inflammatory cytokines and enzymes which helps to modulate various signaling pathways involved in inflammation. This study delves into the assessment of the anti- inflammatory properties of select wild plants while taking into consideration their potential interactions with mineral and mineral-associated pollutants. Safety and potential side effects are discussed in the context of metal exposure scenarios. Additionally, it underscores the necessity for continued research to elucidate the action mechanisms of these plant-derived compounds, further unlocking their therapeutic potential and efficacy in addressing inflammation heightened by mineral- related factors.
Analysis of Forchheimer Effect for Double Diffusive Convection With Dusty Fluids and MHD
Authors: Kavitha S. , Nalinakshi N. , Dinesh P. A. , Brijesh
Published: March 2024

An attempt has been made to analyze the effect of second order resistance for a steady, dusty fluid considering magnetohydrodynamic (MHD) and also the characteristics of fluid like permeability, porosity, solutal diffusivity and thermal conductivity being varied. Here the basic equations are coupled, non-linear Partial Differential Equations (PDEs), which are changed by similarity transformations to higher order Ordinary Differential Equations (ODE). After being transformed the higher order ODE that where obtained are resolved numerically. Shooting technique is employed here and the values are tabulated for various pertinent parameter variations. The effects of the inertia, concentration and interaction, mixed convection, magnetic and many other parameters are discussed and plotted graphs for velocity, concentration and temperature. The magnetic force enhances velocity. It was found that the present study correlates with the existence results.
Современные виды хирургических операций при раке молочной железы
Authors: Силаева А.М. , Архипова А.П.
Published: March 2024

За последние годы в лечении рака молочной железы произошел значительный прогресс в хирургических методах. В данной статье рассматриваются современные хирургические подходы в контексте лечения рака молочной железы, изучая их эффективность, преимущества и связанные с ними проблемы. В статье подчеркивается роль минимально инвазивных методик лечения в повышении точности и улучшении результатов лечения пациентов. Также обсуждается важность индивидуальных планов лечения, учитывающих предпочтения пациентов. Цель этой статьи – рассмотреть хирургические стратегии для более глубокого понимания разнообразных подходов, доступных в современном лечении рака молочной железы.
Кислотные дожди – как следствие жизнедеятельности человека
Authors: Панова Ю.С. , Усачева И.Н.
Published: March 2024

В настоящее время считается, что кислотные дожди, в большинстве случаев, возникают в результате деятельности человека, и они негативно влияют на окружающую среду. Суть понятия «кислотный дождь» подразумевает высокую кислотность осадков, которая оказывает разрушительное воздействие на экосистемы и человеческую цивилизацию. В работе дается краткая характеристика кислотного дождя, а также говорится о том, как это явление оказывает воздействие на природные системы и общество.
Санитарно-гигиенические требования к доильной аппаратуре
Authors: Шевченко А.Н. , Ивакин И.Е.
Published: March 2024

В статье описаны способы мойки и дезинфекции доильной аппаратуры, а также санитарно- гигиенические требования.
Синтетическое производство ювелирных камней
Authors: Драбовская Е.Ю. , Шевчук В.К.
Published: March 2024

Гонка человека за красивыми блестящими камнями была начата много веков назад и никогда не закончится. Сложно найти человека, которого бы не привлекали драгоценные камни. Кроме блеска и красоты драгоценный камни ценятся своей редкостью. Этим и обуславливается их высокая стоимость. Цена и редкость – два основных фактора, побудивших учѐных искать пути создания драгоценных камней в лабораторных условиях. И это стало возможным чуть больше века назад! Инновации и знания позволили развить новую отрасль в промышленности драгоценных камней – синтетическое производство.
Самоконтроль в процессе занятий физической культурой
Authors: Васенков Н.В. , Петрова Д.Д.
Published: March 2024

Самоконтроль играет важную роль в достижении успеха в различных сферах жизни. Он представляет собой способность контролировать и оценивать свои действия, поведение и достижения с целью улучшения и самосовершенствования. В данном тексте рассмотрим основные методы самоконтроля спортсменов в процессе занятий физической культурой.
Интеграция передовых технологий в развитие физической подготовки
Authors: Гайсина Р.И. , Севодин С.В.
Published: March 2024

Развитие физической подготовки играет важную роль в общем физическом и психическом состоянии человека. С постоянным развитием науки и технологий, необходимо интегрировать передовые технологии в физическую подготовку, чтобы обеспечить максимальные результаты и улучшить эффективность тренировок. В этой статье мы рассмотрим как можно интегрировать современные технологии в процессе физической подготовки, определим основные преимущества и недостатки использования IT-технологий в данном процессе.
Киберспортивная дисциплина Counter-Strike , ее место в современном мире и конкуренция со спортом
Authors: Ибрагимов И.Ф.
Published: March 2024

Дисциплина в киберспорте, известная как Counter-Strike, является одной из наиболее популярных в мире, объединяя миллионы игроков со всего глобального сообщества. Она предоставляет участникам возможность проявить свои уникальные способности и навыки в виртуальных сражениях. Несмотря на это, некоторые критики высказывают мнение, что киберспортивные дисциплины не могут соперничать с традиционными видами спорта в отношении физической нагрузки на организм. В то время как другие утверждают, что киберспорт требует высокой степени концентрации, тактичности и стратегического мышления от игроков. Вне зависимости от точки зрения, следует отметить, что Counter-Strike оставил свой след в истории киберспорта и продолжает приносить много эмоций и впечатлений своим поклонникам.