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566 articles for “appearance”
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Solid State Technology Reinvents Microwave Heating
Abstract: Since magnetrons first came into widespread commercial use in microwave ovens in the early 1970s solid state technology has evolved relatively slowly to be used in industrial heating, consumer cooking, drying, automotive applications etc. Recently, RF energy utilizing solid state devices has appeared in the market as a viable replacement for magnetrons as the heating engine. This route offers many advantages like better energy direction control, longer life, enhanced reliability, …
Published in Journal of Microelectronics and Solid State Devices · Vol. 9, Issue 1, 2022 · pp. 6–15 Read article
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Atomic Reactors and Use of Heat Pipes
Abstract: AbstractNuclear power and coolant purpose in passive space power systems have evaluated PWC – 11 niobium base alloys (Nb – 1Zr – 0.1 C) to be one of suitable alloy system. High temperature resistant but easy to oxidize alloy have considered to be important from comparatively higher strength as observed in various heat treatments. Oxygen availability in space has contaminated from material associated to construction. Design compatibility and versatile use …
Published in Journal of Nuclear Engineering & Technology · Vol. 9, Issue 2, 2019 · pp. 24–32 Read article
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Performance Evaluation Studies of Purolite NRW-5010 and Indion AGR Anion Exchange Resins by Radioactive Tracer Technique
Abstract: AbstractThe characterization of organic base anion exchange resins Purolite NRW-5010 and Indion AGR was made by application of short lived radio tracer isotopes 131I and 82Br. The characterization of the two resins was based on their performance during iodide and bromide ion-isotopic reaction taking place between the resin surface and the external labeled ionic solution. The exchange reactions were carried out by using the ionic solution in the concentration range …
Published in Journal of Nuclear Engineering & Technology · Vol. 4, Issue 1, 2014 · pp. 13–24 Read article
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Characterization studies on surface activation of phosphor bronze wire mesh via different chemical means for water distillation applications
Abstract: Surface activation of phosphor bronze structured packing modules is an important step in the manufacturing of high efficiency water distillation columns as it ensures excellent mass transfer behaviour and overall process intensification. These packed columns are used in the nuclear industry for heavy water production and purification. Activation is generally achieved through a treatment involving aqueous NaOH solution with bubbling of oxygen gas through it. This leads to the development …
Published in Journal of Nuclear Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 10–23 Read article
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Decrement of Spin-orbit Splitting Near Calcium Region
Abstract: Explanation of the observed decrement of splitting of spin-orbit partners near shell closure, has been sought through an introduction of tensor interaction in a mean field type of calculation. The strength of the tensor interaction used in the Skyrme Hartree Fock theory has been optimized by the reproduction of the experimentally determined splitting of 1d, 1f and 2d shell model states (both neutron and proton) of the isotopes of Calcium …
Published in Journal of Nuclear Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 11–22 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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Characterization and Gamma Irradiated MA-EMA Copolymer by ESR and FTIR Techniques
Abstract: AbstractGamma irradiation effect of methacrylamide-ethyl methacrylate (MA-EMA) copolymer has been investigated by electron spin resonance (ESR) and Fourier Transform infrared (FTIR) spectroscopic techniques. The ESR spectrum observed for gamma irradiated MA-EMA copolymer has shown resolved hyperfine (hf) pattern at lower temperatures (77K) while at higher temperatures the spectrum is appeared to be broadened. Fourier Transform Infrared spectra of pure and gamma irradiated MA-EMA copolymer have been recorded for the copolymer …
Published in Journal of Polymer & Composites · Vol. 4, Issue 3, 2016 · pp. 40–44 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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Evaluating Novel Inhibitor Pigment Blends using Electrochemical Scanning Techniques (EIS, SVET and SKP)
Abstract: AbstractOne of the main applications coming to the fore for scanning vibrating electrode technique (SVET) and scanning Kelvin probe (SKP) systems is ability to look at inhibitor combinations, which could be used to replace chromates in coil-coated galvanized steels. The results are very promising using the SVET system and results with the SKP system also show results to be comparable with the SVET system. Electrochemical impedance spectroscopy (EIS) is also …
Published in Journal of Polymer & Composites · Vol. 1, Issue 1, 2013 · pp. 6–16 Read article
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A Review on Tensile and Flexural Properties of Natural/Glass Fiber Reinforced Polymer Composites
Abstract: In the most recent decade, natural plant fibers like (jute, sisal, banana, hemp, kenaf, and so on) are getting consideration from numerous analysts and academicians to use it as a substitute support of engineered fiber strengthened polymer composites. Composite assume huge job as designing material and their utilization has been expanding step by step because of their particular properties, for example, high solidarity to weight proportions, high modulus to weight …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 70–80 Read article
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Evaluation of Compatibility of Elastomeric Component of Master Cylinder with Brake Fluid
Abstract: Importance of proper functioning of braking system of any automobile is imperative for ensuring safe operation. Master cylinder is a heart of the brake system and rubber seals and cups are its vital parts. Specially processed and designed seals resist leakages and transformation due to temperature changes or reaction with the brake fluid. This paper presents the compatibility study conducted on two different rubber materials, NBR and SBR-EPDM (identified by …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 34–42 Read article
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Effects of Plasticizers on Structures of Chemical Functional Groups, Morphologies, Water Vapor Permeability, and Thermal Properties of HPMC/BW Biopolymer Films
Abstract: Food preservation is one of the fields that many researchers are interested in, especially in the epidemic period like COVID-19 today. The better food or agricultural products are preserved for a long time, the more it ensures social stability for state management related to food security for people. This paper introduces one kind of biopolymer films with investigation on effect of plasticizers to its characteristics. In order to produce biopolymers, …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 10–20 Read article
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Wax Deposition Profile Estimation in Production Pipeline Review
Abstract: Wax deposition has been a major challenge in flow assurance of paraffinic crude oils. A major problem occurs because of a decrease in the bulk oil flowing and pipe wall temperatures. Wax deposits form when the temperature of the produced fluid falls below the wax appearance temperature or the cloud point temperature. Problems like pipeline plugging, increased pumping pressure and reduction in production rates are very common. Sophisticated mechanical and …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 18–26 Read article
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Emerging Technologies to Control Wax Deposition in the Oilfields: An Overview
Abstract: Wax deposition on the well bore, production tubing, flow lines and pipelines reduces the production or flow capacity and increases the cost for the production and transportation of waxy crude oils in the oilfields. The different conventional methods for the control of wax deposition problems are mechanical, chemical, electrical, thermal and combination of others. But, there is no single solution to this problem that can be applied to all the …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 2, 2013 · pp. 18–27 Read article
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Biogas: Usefulness, existing technology and major hurdles
Abstract: There is strong scientific evidence that the average temperature of the earth’s surface is rising and this may be attribute to increased concentration of carbon dioxide (CO2), and other greenhouse gases (GHGs) in the atmosphere as released by burning fossil fuels. One of the chief sources of greenhouse gases is burning of fossil fuels. Biogas from biomass appears to have potential as an alternative energy source, which is potentially rich …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 2, 2020 · pp. 1–14 Read article
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Identification of Elements Exist in Area Around Khartoum Petroleum Refinery Using Spectroscopic Method
Abstract: Laser-induced breakdown spectroscopy (LIBS) is a method of atomic emission spectroscopy (AES) that uses a laser-generated plasma as the hot vaporization, atomization, and excitation source. Plasma is often called the fourth state of matter. The various states of matter occur as a substance is heated to temperatures corresponding to thermal energies above the binding energies for particular state of matter. Structured systems placed in a sufficiently hot environment. LIBS technique …
Published in Journal of Petroleum Engineering & Technology · Vol. 12, Issue 1, 2022 · pp. 1–14 Read article
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Firefly Algorithm and its Applications to Mechanical Engineering- A Review.
Abstract: The firefly algorithm (FA) is one of the Nature-inspired algorithms which is inspired by the flashing behavior of fireflies. This algorithm appeared about five years ago in 2008, and its literature has expanded with diverse applications. In this, randomly generated solutions will be considered as fireflies, and brightness is depending on their performance on the objective function. This algorithm is based on a formula of light intensity I that decreases …
Published in Journal of Production Research & Management · Vol. 9, Issue 1, 2019 · pp. 9–16 Read article
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Design and Fabrication of Automated Channel Cleaner
Abstract: This paper focuses on the design and fabrication of automated channel cleaning system. Water is a basic necessity of humans & all living beings. There is plenty of water on earth but that is not suitable for human use. For some purpose clean water is more important if used. The impurities is present in water can cause hazardous disease.. Debris in drain water can be only like empty bottles, polythene …
Published in Journal of Production Research & Management · Vol. 10, Issue 2, 2020 · pp. 6–12 Read article
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Evaluation of Performance Indicators for B2C E-Commerce Websites using GRA: A Case Study
Abstract: COVID-19 Pandemic made a tremendous inclination towards e-commerce websites, as the customers prefer online purchasing rather than traditional purchase. The country's demographic dividend also appears to foster and favor the rise of e-commerce. When coupled with the fierce rivalry that exists in the market, e-commerce enterprises' survival in a highly dynamic environment becomes a difficult undertaking. To ensure client loyalty, businesses must constantly adapt and develop while providing an information-rich …
Published in Journal of Production Research & Management · Vol. 11, Issue 2, 2021 · pp. 9–19 Read article
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A RELIABILITY STUDY ON A SYMMETRIC TWO-SPAN I - STEEL BEAM
Abstract: In this paper, a reliability study is carried out on a symmetric two-span I-Section steel beam using the First Order Reliability approach. The ultimate limit state of bending moment, shear stress and local buckling of web were the design criteria considered in the reliability index estimation. A Matlab code was developed based on the performance functions developed for the various failure modes and a Matlab optimizer, fmincon, was invoked in …
Published in Journal of Structural Engineering and Management · Vol. 6, Issue 1, 2019 · pp. 18–27 Read article