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1593 articles for “X.509”
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Investigation of Oxidation Behaviour of Plasma Sprayed Carbon Nanotubes-Alumina Coated ASME-SA213-T22 Boiler Tube Steel
Abstract: AbstractIn this research work, carbon nanotubes reinforced Al2O3 coated ASME-SA213-T22 boilertube steel was investigated for high temperature oxidation behaviour at 900ï‚°C temperature inthe air. The coatings were deposited using plasma spray technique and NiCr was used asbond coat before applying CNTs-Al2O3 coatings. The hot corrosion studies were conducted onuncoated as well as plasma spray coated specimens in air at 900°C under cyclic conditions.The thermogravimetric technique was used to establish kinetics …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 7, Issue 2, 2017 · pp. 10–22 Read article
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Thermal-hydraulic Safety Assessment of a Miniature Neutron Source Reactor
Abstract: The main objective of this study is to assess the thermal-hydraulic safety capability of the PLTEMP/ANL v 4.0 in analyzing Ghana Research Reactor-1 (GHARR-1), with vertical fuel rods cooled by natural convection, operating at a nominal power (30 kW) with sufficient safety margins. The neutronic analysis of the core was performed using MCNP X code, where parameters of interest were the power distributions and the power peaking factors. The thermal-hydraulic …
Published in Journal of Nuclear Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 18–44 Read article
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System Integrity Analysis on the PMS Designed with the ALS Platform
Abstract: FPGA technology based ALS platform was designed by WEC as the next generation 1E class platform for protection and monitoring system development for nuclear power plants and had been approved by NRC in 2013. Based on the features of the platform and typical PMS function requirements, a new overall architecture based on ALS for PMS is designed and the consistency with system integrity requirements in SRP is analyzed. The evaluation …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 1–11 Read article
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Green Synthesis of Zinc Oxide Nanoparticles using Extracts of Ocimum Tenuiflorum and its Characterization
Abstract: Various applications of nanoparticles stimulate the need for synthesizing them. But, the conventional methods are usually hazardous and energy consuming. This leads to the focus on “green synthesis” of nanoparticles which was an efficient and eco-friendly approach. Natural diminishment operators are being investigated worldwide to limit the impacts of toxic chemicals utilized as a part of nanoparticles creation. The present study states a green approach for the synthesis of zinc …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 1, 2018 · pp. 9–19 Read article
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Synthesis and Characterization of CeO2-ZrO2 Nanocomposites
Abstract: CeO2-ZrO2 nanocomposites were prepared by hydrothermal method and characterized by using XRD (X-ray diffractometer) to study the structural analysis of the prepared nanocomposites. The as-prepared samples were further annealed at 150º C and 300º C. From the structural studies crystal size and lattice parameter was calculated. FTIR analysis confirms the results of vibrational spectra and XPS, EDAX analysis confirms the elements presents in the composites. Effect of annealing in frequency …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 3, 2018 · pp. 21–32 Read article
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Catalytic Reduction of Organic Dyes with Green Synthesized Silver Nanoparticles using Aloe vera Leaf Extract
Abstract: In this present study, we report a facile, cost-effective and non-toxic method of synthesis of silver nanoparticles using 4mM silver nitrate and aqueous leaf extract of Aloe vera as reducing and capping agent in presence of 25% ammonia solution. Then these green synthesized nanoparticles are used as catalysts for the degradation of organic dyes. The synthesized silver nanoparticles (AVSNPs) were characterized using different techniques like UV-Visible spectroscopy, Fourier infrared spectroscopy …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 2, 2019 · pp. 9–21 Read article
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Investigating the Effect of Annealing Temperatures on SnO2 Nano Structural Thin Films and their Properties
Abstract: As deposited and two different annealing temperatures (500°C and 600°C) of Tin dioxide (SnO2) thin films are prepared on glass substrates by Chemical Bath Deposition (CBD) technique and subsequently their structural, morphological, optical and electrical properties are investigated and analyzed as a function of annealing temperature. It’s found that SnO2 films exhibit different nanostructures at different annealing temperatures. XRD analysis confirms that both deposited and annealed films are cubic structure …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 12, Issue 1, 2022 · pp. 28–39 Read article
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Study of Elastic Properties of Copper Substituted Nickel – Zinc Nano Ferrites Through IR-Spectroscopy
Abstract: Nano crystalline Ni 0.65 Zn 0.35 Cu x Fe (2-2x/3) O 4, (x ranging from 0 – 0.05 in steps of 0.01) ferrites synthesized via hydrothermal route are characterized by FTIR spectroscopy. IR spectra of prepared ferrites demonstrated the two fingerprint absorption bands of spinels in the range of 400-600 cm-1. Lattice constant, X-ray density values obtained from XRD patterns used for evaluating the tetrahedral site and octahedral site force …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 25, Issue 2, 2023 · pp. 1–12 Read article
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Structural and Dielectric Properties Hexaferrite/Poly (Vinyl Alcohol) Composites
Abstract: Magnetic barium cobalt hexaferrite particles-PVA composites with of different mass ratio: 9:1, 8:2, 7:3, 6:4 and 5:5 were prepared. Structural properties of the composites were characterized by Infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM). The effect of the concentration of Ba2Co2Fe28O46 hexaferrites on structural and dielectric properties of magnetic-PVA composites were investigated. FTIR result revealed that composite samples show absorption peaks of both ferrites and PVA. …
Published in Research & Reviews : Journal of Physics · Vol. 2, Issue 3, 2013 · pp. 10–19 Read article
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Effect of Microwave Energy on Titania Doped YSZ
Abstract: Today, Solid State Oxide Fuel Cells (SOFCs) have become a need of the hour owing to higher efficiency, low emissions and versatile applications. Various materials are being explored to increase its performance and long-term stability, especially at high temperatures. Though YSZ has been the state of art anode material, YZT is emerging as a future material under consideration. Theundoped YSZ and the doped YSZ, i.e. 5 mol% YZT, calcined and …
Published in Research & Reviews : Journal of Physics · Vol. 7, Issue 3, 2018 · pp. 51–55 Read article
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The Formation of Bi-2223 Superconductor with Fe-Substitution
Abstract: Presently, we have studied about synthesis and characterization of Bi-2223 Superconductors in the form of Bi2Sr2Ca3(Cu0.97Fe0.03)3O10+δ complex. The sample was established with solid state method and characterized by XRD, (FESEM) and (FTIR). The DC electrical resistivity of the sample was measured at liquid helium temperature. The XRD parameters shows the orthorhombic structure with lattice constant a = 5.7429Å, b = 5.0845 Å, c = 36.5569 Å and grain size confirm …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 2, 2020 · pp. 32–41 Read article
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Synthesis and Characterization of Mg doped ZnFe2O4
Abstract: AbstractSingle-phase Mg-doped ZnFe2O4 nanoparticles with x= 0, 0.3, 0.5, 0.7 have been prepared by the glycol-thermal method without any subsequent calcination. The crystallite size, microstructure and magnetic properties of the prepared nanoparticles were studied using X-ray diffraction (XRD), high resolution scanning electron microscope (TEM), Mössbauer spectroscopy and vibrating sample magnetometer at room temperature. The XRD results revealed the production of a sharp single cubic spinel structure in all the synthesized …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 · pp. 57–65 Read article
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Tweets Classification using Different Classifiers for Sentiment Analysis
Abstract: Twitter is a famous platform for social networking where people share and engage with "tweets" comments. It is a way of expressing people's opinions or emotions on various topics. Different parties, like producers and consumers, have carried out a sentiment analysis on tweets to gain insights into goods or to analyze the sector. Also, the accuracy of our sentiment analysis forecasts will increase with the recent advances in machine learning …
Published in Research & Reviews : Journal of Statistics · Vol. 10, Issue 3, 2021 · pp. 34–43 Read article
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Chemical Constituents and Antacid Activity of Aqueous Extract of the Leaves of Sanchezia nobilis Hook.f. from Vietnam
Abstract: From the aqueous extract of the leaves of Sanchezia nobilis Hook.f. collected in Nam Dinh province by chromatographic methods. Their chemical structures were elucidated by the measurements of melting temperature, rotation angle, mass spectrometry (MS), nuclear magnetic resonance (NMR) and compared with previously published data. These were identified as: 4',5,7-trihydroxy-3',5'-dimethoxyflavone (NX1), kaempferol-3-O-α-L-arabinofuranoside (NX2), kaempferol-3-O-β-D-glucopyranoside (NX3). These all compounds were isolated from the leaves of Sanchezia nobilis for the first time. …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 6, Issue 2, 2019 · pp. 15–22 Read article
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Pharmaceutical Activity of Mirabilis Jalapa and its Biogenesis of Nanocrystals
Abstract: Bio friendly green modest synthesis of nanoparticles are the present research in nanotechnology. This study has been undertaken to explore the determinants of copper nanoparticles from 1 mM CuSO4 solution through profuse concentration of aqueous flower extract of Mirabilis jalapa reducing besides immobilizing agent. The attribute of copper nanoparticles was studied by using UV-VIS spectroscopy SEM and XRD. The XRD spectrum of the copper nanoparticles established the presence of elemental …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 12, Issue 3, 2025 · pp. 56–65 Read article
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Machine Learning Based Optical Fiber Fault Detection and Localization Using OTDR Signals
Abstract: Optical fiber networks provide high bandwidth, low transmission loss, and immunity to electromagnetic interference, making them fundamental to modern communication infrastructure. However, fiber faults caused by cable cuts, excessive bending, connector degradation, splicing defects, and physical disturbances can significantly affect network reliability. Optical time-domain reflectometry (OTDR) is widely used for identifying and locating such faults, but conventional OTDR interpretation often depends on threshold-based signal processing and manual analysis. This study …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 2, 2026 · pp. 41–52 Read article
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AI-Assisted Design of a Compact Bandpass Microwave Filter for 5G/6G Applications
Abstract: The rapid development of fifth generation (5G) and emerging sixth generation (6G) wireless communication systems require compact, low-loss, highly selective and frequency-stable radio- frequency front-end components. Microwave bandpass filters play an important role in selecting desired communication channels while suppressing out-of-band interference. However, conventional filter design generally requires repeated electromagnetic simulation and manual optimization of geometrical parameters, resulting in considerable computational time. This paper presents an artificial intelligence (AI)-assisted methodology …
Published in Journal of Microwave Engineering and Technologies · Vol. 13, Issue 2, 2026 Read article
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AI-Assisted Design of a Compact UWB Antenna with Tunable Band-Notch Characteristics
Abstract: Ultra-wideband antennas require wide impedance bandwidth while maintaining stable radiation characteristics and suppressing interference from coexisting narrowband wireless services. Conventional optimization of UWB antenna geometries generally requires repeated full-wave electromagnetic simulations, making parameter exploration computationally expensive. This paper proposes an artificial-intelligence-assisted methodology for designing a compact UWB monopole antenna with a tunable band-notch characteristic. The proposed antenna uses a microstrip-fed planar monopole printed on an FR-4 substrate, while a tunable …
Published in Journal of Microwave Engineering and Technologies · Vol. 13, Issue 2, 2026 Read article
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An AAV Vector for Inducible Gene Expression Preferentially in Muscles
Abstract: Adeno associated viral (AAV) vectors has been used widely in gene therapy and efforts have been made to improve their utility by adding genetic elements that would enable targeting transgene expression to particular cells or tissues of interest and permitting on/off regulation of expression. In this study, we designed a recombinant AAV9 variant PHP.eB vector with muscle creatine kinase (Mck)-derived enhancers, a synthetic muscle-expression promoter, in combination with a third-generation …
Published in International Journal of Genetic Modifications and Recombinations · Vol. 1, Issue 2, 2023 · pp. 46–61 Read article
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Harnessing the Medicinal Potential of SwertiaChirata: A Phytochemical Strategy for Controlling Coronavirus Symptoms Like High Fever and Anxiety
Abstract: The current investigation focuses on exploring the therapeutic capacities of SwertiaChirata, colloquially known as Chirata, in managing the symptomatic displays of coronavirus infections. Chirata, a member of the Gentianaceae family, is a distinguished herb extensively used in Ayurvedic and Unani medicinal traditions, acknowledged for its myriad of healing qualities. In addition to its regular use in combating fever and loss of appetite, its prominent antioxidant traits position it as an …
Published in International Journal of Biomedical Innovations and Engineering · Vol. 1, Issue 2, 2023 · pp. 27–31 Read article