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1930 articles for “5 ‘S” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Optical Properties of Barium Borate (BaB2O4)Compound for Current Optoelectronic Applications
Abstract: In this work,Barium borate was prepared by sol-gel synthesisdepending on different molar (0.1, 0.2, 0.3 0.4 and 0.5) molar. Barium borate is an inorganic compound, and it was useda borate of barium with a chemical formula BaB2O4 or Ba(BO2)2 It is available as hydrate or dehydrated form, as white powder or colorless crystals. The optical characteristics of the prepared samples have been investigated by UV/Vis spectrophotometer in the wavelength range …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 1, 2020 · pp. 49–58 Read article
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Synthesis and Characterization of Green Synthesized Iron Nano Particle (GInP) Using Eucalyptus globulus for Lead Removal
Abstract: The application of green synthesized iron nanoparticle for the removal of lead is researched in this study. The FT-IR and XRD results reveal that a nanoparticle with 80 nm size could be synthesized using Eucalyptus globulus leaf extract. The specific surface area of the nanoparticle was found to be 59 m2/g. The lead removal capability of the green synthesized iron nanoparticle (GInP) was investigated for lead concentration ranging from 50–250 …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 3, 2020 · pp. 20–25 Read article
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Study on High Strength Ti-Al-V Alloy at Cryogenic Temperature
Abstract: The α+β type high strength titanium alloy is usually used as a structural biomaterial for the manufacturing of orthopaedic prostheses as well as surgical and dental implants. The Ti-Al-V alloy had been deliberately solution treated at 860°C for 1 h (subsequently quenched in variable mediums) just below the β transus but within the α+β region to avoid grain coarsening for single β region as well as accomplish optimum balance properties …
Published in Journal of Materials & Metallurgical Engineering · Vol. 13, Issue 1, 2023 · pp. 1–14 Read article
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Distribution Power Loss Minimization by Network Reconfiguration and DG Placement
Abstract: AbstractThe paper presents an efficient algorithm for network reconfiguration associated with DG allocation to minimize real power losses in radial distribution networks. Selective Particle Swarm Optimization algorithm (SPSO) is used to find new tie switches. Allocation of DG units has been done by new analytical approach. The proposed analytical method for optimal DG placement is developed based on a new mathematical formulation. DG type-I is used to solve the problem. …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 1, 2018 · pp. 8–19 Read article
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Synthesis and Characterization of Nickel doped Barium Niobate Ba (Ni0.5Nb0.5)O3 (BNN) Nanomaterial
Abstract: AbstractFerroelectric materials are of great interest for researchers worldwide, because of their unique physical properties and wide range of applications. The composite nanomaterial Ba(NiNb)0.5O3 (BNN) was synthesized by conventional solid state reaction method. The structural characterization was done by x-ray diffraction (XRD). The research was carried out to investigate structural properties of BNN nanomaterial as a function of sintering duration. BNN was sintered at 10000C and different samples were prepared …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 2, 2018 · pp. 29–33 Read article
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Performance Analysis of Complimentary Pass Transistor Logic Based Multiplexer Using Dual-gate FinFET Technology
Abstract: AbstractThis paper presents the design and analysis of double gate FinFET complimentary pass transistor logic (CPL) multiplexer. The circuit of multiplexer (MUX) using CPL is used for comparison of performance parameters like average power consumption, rise/fall time, delay, slew rate, PDP and EDP. Multiplexer is a digital circuit, it has inputs and select line; select lines are used for select input lines to transfer data to the output end. The …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 1, 2018 · pp. 41–48 Read article
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Gallium Nitride based HEMTs in Nano-Scale Regime
Abstract: AbstractIn this work, a maximum drain current of 557 mA is achieved by the simulated structures of double-heterojunction HEMTs using the SILVACO-ATLAS software tool. The drain current is found to be higher at shorter gate length. The drain current is observed as higher at larger aluminium mole fraction. The drain current is also higher at larger thickness of AlGaN barrier layer. Again, the drain current is higher at larger doping …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 3, 2018 · pp. 11–21 Read article
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Sizing and Power Estimation Models of an Off-grid Wind Power Supply System in Sokoto, Nigeria
Abstract: AbstractThe exploitation of wind energy for electricity generation could be done by the use of wind turbines. The power output from the wind generator fluctuates due to the variability of wind speed and therefore storage facilities are needed for power supply stability. This research focuses on the wind power potential investigations, sizing of wind power system components and determination of the better wind turbines for residential power supply in Sokoto, …
Published in Journal of Nuclear Engineering & Technology · Vol. 10, Issue 1, 2020 · pp. 1–7 Read article
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Worker Radiation Exposure during Transportation of Irradiated LEU Targets in a Typical MTR Reactor
Abstract: The paper estimates the radiation dose exposure for the worker in the second Egyptian research reactor ETRR-2 during the process of transporting the irradiated low enriched uranium LEU plates from the core to the hot cell. The aim of estimating the radiation doses distribution is determining the exposure dose for the worker during the transportation process as a safety point of view. In order to estimate irradiated LEU plates radiation …
Published in Journal of Nuclear Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 48–51 Read article
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Hazards of Power Production-A comparative study
Abstract: Nuclear energy has played a major role in reducing the world's use of oil for electricity generation over the past decades. Current estimates are that uranium resources will last some 400 to 500 years at the present rate of use. This resource base could, furthermore, last some 50 times longer if breeder reactors are introduced. Of the main energy sources, namely coal, hydro and nuclear, nuclear can be even considered …
Published in Journal of Nuclear Engineering & Technology · Vol. 11, Issue 1-2, 2021 · pp. 1–20 Read article
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Challenges In Sodium Cooled Fast Reactor Thermal Hydraulics
Abstract: Heat Transfer and Fluid flow phenomena (referred as Thermal Hydraulics) play a significant role in the safe and economical design of fast breeder reactors (FBR). The sodium cooled fast reactors have a very complex flow and temperature profile within the pool or the test vessel. The high temperature operating conditions (~540 deg.C) also impose stringent requirements on the thermal design of the components. The basic approach of thermal hydraulic design …
Published in Journal of Nuclear Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 33–47 Read article
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Execution of a Large Engineering Project in an R&D Institution- Some Experiences
Abstract: Steam Generator Test Facility (SGTF) was set up mainly to validate the design of the steam generator of the Prototype Fast Breeder Reactor (PFBR). PFBR is a power reactor of 500 MWe after the successful Fast Breeder Test Reactor (FBTR). FBTR was built in collaboration with French Atomic Energy Commission (CEA). It was similar to the 40 MWt Rapsodie reactor but had SG modules of the Phenix reactor design in …
Published in Journal of Nuclear Engineering & Technology · Vol. 12, Issue 3, 2022 · pp. 27–35 Read article
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Poly Vinyl Alcohol/Kaolinite Clay/Grafted Cellulosic Fibre Based Hybrid Composite Films: Physical, Mechanical, Optical and Biodegdrability Studies
Abstract: In this study, physical, mechanical, optical, morphological and biodegdrability properties of poly vinyl alcohol (PVA)/kaolinite clay (KC)/grafted barley husk (GBH) based hybrid composite films were prepared by solution casting method. Barley husk was grafted with oleic acid using graft copolymerization method. The hybrid composite films were characterized by FTIR and SEM. Based on the findings from this work, water uptake of the composite films increased with increase in the amount …
Published in Journal of Polymer & Composites · Vol. 5, Issue 3, 2017 · pp. 41–52 Read article
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Numerical Prediction of Shear Modulus of Multi-Layer PUF Cored Sandwich Composites
Abstract: The present numerical investigation was mainly concerned with the evaluation of apparent shear modulus (Gc) of multi-layered polyurethane foam cored sandwich beams using a novel approach through the medium of general purpose program i.e. FEM/ANSYS. Aiming to the goal, three-point bending analysis was performed on sandwich beam models made up of composite face sheets and multi-layer polyurethane foam cores of different layer densities. Finite element models of sandwich beams were …
Published in Journal of Polymer & Composites · Vol. 5, Issue 3, 2017 · pp. 53–61 Read article
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Capability Database of Injection Molding Process—Requirements Study for Wider Suitability and Higher Accuracy
Abstract: AbstractGenerally, there is little disagreement that an early consideration of dimensional accuracies achieved in production is conducive to the success of development of injection molding products. While different process capability databases (PCDBs) provide guidance for a meaningful estimation of the expected part variation, the adoption of corresponding guidelines and (proprietary) software tools seems to be, however, limited in industrial practice so far. This research paper addresses the gap between the …
Published in Journal of Polymer & Composites · Vol. 5, Issue 2, 2017 · pp. 18–28 Read article
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Tensile and Impact Properties of Jute/Glass and Jute/Carbon Fiber Reinforced Polypropylene
Abstract: AbstractComposites have created a niche in the world market today as they provide a stiff, strong and lightweight material. Two types of composites polypropylene/jute/glass fiber and polypropylene/jute/carbon fibers were prepared by varying the percentages of jute, glass and carbon fibers, respectively. A proportion of 35:5, 30:10, 25:15 and 20:20 were maintained between jute and other reinforcing fiber (glass or carbon) in polypropylene matrix. Tensile and impact test specimens were prepared …
Published in Journal of Polymer & Composites · Vol. 4, Issue 3, 2016 · pp. 35–39 Read article
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Peroxide Modification of Polyolefins and Long Chain Branching and Molecular Weight Distribution Comparative Studies Thereof using HTGPC
Abstract: AbstractThe modification of polypropylene by combined use of peroxides and multifunctional components (MFC) is widely carried in order to introduce the long chain branching in the polymer. The presence of long chain branching in the polymer structure have effect on the processability, the melt strength and hence, the end-use of polyolefin polymers. The high temperature gel permeation chromatography (HTGPC) is widely used technique in the estimation of molecular weight, molecular …
Published in Journal of Polymer & Composites · Vol. 4, Issue 1, 2016 · pp. 9–15 Read article
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Synthesis and Characterization of Ether Containing Tetraglycidyl Epoxy Reinforced with Amine Functionalized Graphene Oxide (F-Go) and It’s Nanocomposites
Abstract: AbstractTGDDE matrix material along with functionalized graphene oxide (F-GO) as reinforcement was used to develop a unique skeletally modified tetra functional epoxy nanocomposites. Amine functionalization of graphene oxide nanoparticles (F-GO) on its surface was achieved by grafting 3-aminopropyltriethoxysilane (APTES) as coupling agent. The FT-IR spectrum revealed that the silane coupling agent was covalently bonded to the surface of graphene oxide nanoparticles, offering better dispersibility and compatibility with TGDDE epoxy matrix. …
Published in Journal of Polymer & Composites · Vol. 3, Issue 2, 2015 · pp. 39–51 Read article
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Microwave Curing of Glass-Epoxy Composites Using Silica Based Moulds
Abstract: AbstractFor polymer composite product manufacture, curing of the fibre reinforced polymers (FRP) is a critical step in achieving desired mechanical properties. The conventional cure processes involve thermal curing in hot air ovens and autoclaves where the cure process is time and energy intensive. In this context, microwave curing is one of the most promising processing methods since it results in substantially reducing cure cycle time, energy requirements and operational costs …
Published in Journal of Polymer & Composites · Vol. 3, Issue 2, 2015 · pp. 52–57 Read article
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BisGMA/Thermoplastic Polymer Blends: A Study of Mechanical and Corrosive Properties
Abstract: AbstractThe objective of this work is to synthesize various blends of Bisphenol-A-glycidyldimethacrylate (BisGMA) resin with different proportions of thermoplastic polymers like poly-N-vinylpyrrolidone (PVP) and poly-ethyleneoxazoline (PEOZ) and to study their mechanical and corrosive properties. The experimental results showed that BisGMA/PVP and BisGMA/PEOZ blends displayed an improvement in the mechanical properties over unmodified BisGMA resin and the 50:50 blend system is the optimum blend composition in both BisGMA/PVP and BisGMA/PEOZ blends. …
Published in Journal of Polymer & Composites · Vol. 1, Issue 2, 2013 · pp. 1–14 Read article