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812 articles for “Sierpi´cski graph”
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Tribological Behaviour of PTFE based Composite Materials with Different Filler Materials: A Combine Numerical and Experimental Approach
Abstract: This study investigates the tribological behaviour of Polytetrafluoroethylene (PTFE) composites reinforced with various fillers, utilizing the Archard wear model to analyse wear mechanisms and predict wear rates. PTFE is widely recognized for its excellent chemical resistance and low friction, but its inherent wear resistance is relatively poor. To enhance its tribological properties, fillers such as glass fibres, carbon fibres, bronze, and graphite were incorporated into the PTFE matrix. In the …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 547–557 Read article
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Nanostructured Catalysts for Sustainable CO2 Reduction: Advancing Green Chemistry and Polymer Composites
Abstract: This study provides a comprehensive analysis of advanced nanostructured catalysts designed to enhance the efficiency of artificial photosynthesis for sustainable fuel production. We systematically evaluated a range of nanomaterials—including metal oxides, plasmonic nanoparticles, and carbon-based composites—to determine their effectiveness in converting solar energy into storable chemical fuels. The catalysts were synthesized via sol-gel, hydrothermal, and green methods, and their properties were thoroughly characterized using XRD, SEM, TEM, UV-Vis spectroscopy, and …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 175–181 Read article
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Solutions to Overcome SQ Limits for Modelling Efficient Solar Cell and Introduction to Novel QD-MJSC Design
Abstract: AbstractHarnessing the solar power with maximum energy conversion efficiency can fulfill every electrical demand of the world. Depending on the designing of models, the commercial solar cell is being tested. To harness the entire energy on optimum cost, the material is selected in such a way that the overall outcome become beneficiary. In recent market available solar cell, there are still more criteria to be taken care of to improve …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 10, Issue 3, 2019 · pp. 37–46 Read article
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Testing for Shielding and Estimation of Linear Absorption Coefficient Using Gamma Irradiation of Polymer Composites
Abstract: The polymer composites were developed for the application of shielding material in a radiation environment. To determine the linear absorption coefficient of the developed materials for neutrons; an experiment was carried out using an Am-Be neutron source of strength ~3 × 107 n/s. The composites of Epoxy polymer were filled with different three fillers; Graphite, Lead, and Boron Nitrided Nanopowder prepared with the same filler content. Transmitted neutrons were detected …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 59–68 Read article
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Development of PU/Graphene Anticorrosion/antifriction coatings
Abstract: Corrosion inhibition and reduction of frictional wear is a necessary requirement in launch vehicles. Organic coating proves to be the cheapest and most advantageous owing to its high mechanical resistance and high adhesion, better chemical stability, low permeability for corrosive components etc. Among the organic coatings reported, Polyurethane is found to be the most suitable candidate it being relatively durable, softer and more elastic than other organic coatings. However, graphene …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 2, 2023 · pp. 45–56 Read article
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Study of Signal Processing Using Applications of Fourier Series
Abstract: This essay discusses the use of the Fourier series in the field of signal processing. It will include the results of various tests performed on the variable and the results it produces in the form of graphical diagrams. In order to acquire the right information exchange, we have observed a variety of distinct frequency pattern graphs. Also, the stated graph of filtered signal provides unique pattern that may find application …
Published in Journal of VLSI Design Tools and Technology · Vol. 12, Issue 3, 2022 · pp. 35–43 Read article
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Region Segmentation and Annotation with Vehicle Detection Validation Application in Airborne Images
Abstract: In this work, the authors propose an automatic image segmentation and annotation system for airborne images. Initial region segmentation using existing region segmentation methods is applied to airborne images first. To deal with over-segmentation on the initial region segmentation results, the authors performed graph-based region merging by constructing an undirected-graph based on 8-connected local neighborhood. For each region, the authors extracted low-level features and used the Support Vector Machine (SVM) …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 1, Issue 1, 2014 · pp. 9–19 Read article
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Contact-Based Routing to Improve Delivery Ratio in DTN
Abstract: Delay tolerant networks (DTNs) are a new development in network research field. DTNs are the networks where no end-to-end paths are present between nodes for a long period of time. DTNs are wireless networks where disconnections and delays are high. DTN works on the principle of store, carry, forward mechanism. A store, carry, forward mechanism is a mechanism in which when a node receives a packet then it stores in …
Published in Journal Of Network security · Vol. 3, Issue 2, 2015 · pp. 36–43 Read article
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Report on the Nanoelectronic-Designs of the High Electron Mobility Transistors by a Certain Range of Simulation-Studies in the IMPRINT-Project of the Government-of-India
Abstract: In this report, total 10755 individual simulation-outputs are reported according to the performed simulation studies on the nanoelectronic aspects of the high electron mobility transistors (HEMTs) by the nanoelectronic-designs of these advanced semiconductor devices in the purpose of the advancement of ‘science and engineering’ in this IMPRINT-Project as officially started on 3rd October 2016 at 03:00:00PM. This series of simulation work has been performed using the SILVACO-ATLAS software tool on …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 18, Issue 3, 2016 · pp. 36–58 Read article
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Experimental Investigation of PTFE Composite Material with Different Filler Materials
Abstract: Experimental investigation of PTFE (Polytetrafluroethylene) composites with different filler materials such as glass fiber, molybdenum disulphide, graphite carried is out in this study. This study exhibits tribological properties such as wear and coefficient of friction of PTEF composite material. Pin on disc tribometer is used to conduct the wear on PTFF polymer composite. Test is conducted on 10 mm diameter PTFE pin against EN31 counter face. Wear and friction experiment …
Published in Trends in Mechanical Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 34–42 Read article
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Estimation of Edge in Population of Binary Tree Using Stratified Sampling Procedure
Abstract: Sampling methodologies is a tool to investigate about the information of unknown population parameters. Sometimes the population has the tree structure where one node has two or many paths to scatter. For example, from one airport, there are many routes to travel to different airports; and further, other airports have many similar links. This creates graphical structure of connectivity among different airports around the world. Now the problem of investigation …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 1, 2018 · pp. 60–73 Read article
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An Alternative Robust Measure of Outlier Detection in Univariate Data Sets
Abstract: A univariate outlier is a data point that consists of an extreme value on one variable. Here we applied two types of outlier detection methods: one is graphical and another is analytical. This paper presents graphical methods for different statistical outlier detection such as scatter diagram, box plot and normal probability plot. Furthermore, the quantitative methods for outlier detection in this paper are the IQR method, SD method, Z-score method, …
Published in Research & Reviews : Journal of Statistics · Vol. 8, Issue 1, 2019 · pp. 1–11 Read article
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Comparative Analysis of the Model of DVB-T Model Using Various Modulation Techniques 16 QAM & 64 QAM for the Primary Colors
Abstract: Computerized TV broadcasting is the spirit without bounds transmission. Progressions in advanced innovation, pressure in sound and video flagging and other flag handling systems' improvement lead to qualitative change in the field of digital/computerized TV. Usage of a coaxial link and through satellite and earthbound way, computerized transmission is made conceivable. Digitized TV would execute the convolution coding plan alongside OFDM adjustment strategy. The pressure is done and afterward the …
Published in Recent Trends in Electronics Communication Systems · Vol. 8, Issue 4, 2021 · pp. 7–16 Read article
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FEA Simulation for Optimization of Laminated Composite Plate with Cutout in Free Vibrations
Abstract: Laminated composites have a large application in engineering. The work done in this study is to see the free vibration response of graphite epoxy composite square plate subjected to different boundary conditions. Finite element analysis has been done on the software ANSYS. The results obtained by the simulation have been compared with those obtained from a published data obtained by semianalytical solution. It is observed that the solutions through ANSYS …
Published in Journal of Experimental & Applied Mechanics · Vol. 12, Issue 4, 2021 · pp. 6–17 Read article
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Innovative 3D Printed Cell Scaffolds with Magnetized Nanocomposites for Targeted Cancer Therapy Drug Delivery
Abstract: In recent years, scaffolds have gained increasing attention in the field of tissue engineering, especially in cancer treatment. Nanocomposite scaffolds have emerged as promising candidates for delivering drugs to cancer cells. 3D printing technology has enabled the fabrication of customized scaffolds with precise pore size and complex geometries. This study explores the development of 3D printed scaffolds of nanostructured made of graphene oxide and Poly-Caprolactone (PCL) nanocomposites, which can be …
Published in Journal of Polymer & Composites · Vol. 11, Issue 3, 2023 · pp. 48–55 Read article
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The Symbiosis Between Spherical Refractive Error Cylindrical Refractive Error
Abstract: This study aimed to acknowledge the link between spherical refractive error and cylindrical refractive error, which is crucial for diagnosing and managing visual abnormalities productively. This research employed a multi-center, cross-sectional, analytical, and retrospective approach to investigate refractive errors. The objective results were refined subjectively to the best visual acuity with conventional clinical representations of refraction using the sphere, cylinder, and axis. The gathered data underwent analysis utilizing statistical software …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 13, Issue 1, 2024 · pp. 67–76 Read article
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An Overview of Smart Attendance System and Communication system
Abstract: Our attendance is made more sophisticated and self-controlled by using "the smart attendance system (SAS)," which is the topic of this paper. It has an innovative QR scanner technology that makes the process accurate and simple. The system operates efficiently, saving us time and requiring less labor to maintain attendance. Previous versions of the monitoring system had problems locating students and required a tedious manual attendance method. Thanks to developments …
Published in International Journal of Radio Frequency Innovations · Vol. 1, Issue 2, 2023 · pp. 12–17 Read article
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Developing an AI-Based Novel Forecasting Framework for Surface Irregularity in Metal Matrix Materials
Abstract: Surface irregularity in metal matrix materials (MMM) signifies the deviations from smoothness, influencing structural integrity and performance frequently arising from the manufacturing process along with intrinsic material characteristics that influence effectiveness. Limitations in data, model interpretability and complexity are the difficulties that impede artificial intelligence (AI) based surface irregularity in MMM. In this study, we suggested a novel framework of Gaussian regression fused multi-strategy adaptive boosting classifier (GR-MABC) for the …
Published in Journal of Polymer & Composites · Vol. 12, Issue 5, 2024 · pp. 48–56 Read article
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Monitoring eddy current density fluctuation and power management in doped Al 2 O 3
Abstract: Al2O3 nanowire presents fascinating electrical properties which span from insulating (dielectric) to superconducting. A model is designed to describe the Phenomenon of eddy electric current and eddy current density fluctuation. Ohmic type theorem is developed using the modified Green – Kubo theorem. With little modification Green-Kubo theorem is incorporated to explain the relationship between eddy current density, electric field, and electric conductivity. Then factor contributing eddy current density fluctuations are …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 26, Issue 1, 2024 · pp. 35–45 Read article
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Theoretical Study of Surface Waves in Hexagonal Boron Nitride (hBN)
Abstract: Hexagonal boron nitride (hBN) is a wide bandgap semiconductor material in which Boron (B) and Nitrogen (N) atoms form hexagonal structure and has number of robust properties of technological importance. Boron nitride nanotubes (BNNTs) are very nice area of research in recent years. Its structure is similar to carbon nanotubes (CNTs) where carbon atoms are arranged in hexagon. hBN is also known as White Graphene. Various methods are employed to …
Published in Research & Reviews : Journal of Physics · Vol. 13, Issue 1, 2024 Read article