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1970 articles for “3-acetyl-7-bromo-2H-chromen-2-one” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Tribological Behaviour of En 31 Bearing Steel Against Altin, Alcrn and Crn Coated High Speed Steel
Abstract: Mechanical parts like bearing in modern machining systems are often subjected to wear and friction causing high heat generation at the interacting zones leading to reduced lifecycle and increased energy consumption of machinery. In this investigation friction and wear characteristics of bearing material EN31 steel against the CrN, AlCrN and AlTiN deposited on high speed steel as counter material is presented. Tribological tests are conducted on a pin on disc …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 97–108 Read article
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THD Minimization of 27 Level Inverter using FPGA Control Strategy
Abstract: Normally single phase inverter gives only +230 V or –230 V. But multilevel inverter gives the variable output voltage in various levels and also the harmonics are reduced. If harmonics are produced, it affects the output of the load. Most of the industrial applications rely on Induction motors because of the reliable operation, low cost and simple construction. So the Multilevel inverter output is connected to the Induction motor. Here …
Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 3, 2013 · pp. 39–46 Read article
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Design of Active Power Based Relay Algorithm to Overcome Transient Instability: 220 kV Amravati Substation Case Study
Abstract: This paper presents a new protective scheme, i.e. new relay algorithm to protect small scale generators against transient instability. The demand of installing small generators in distribution networks has been increased now-a-days. Small scale generators have low inertia constant. The inertia constant minimizes the frequency deviation which depends on the kinetic energy. Therefore frequency dynamics becomes slower and hence it increases the response time to react to fault events. Due …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 64–73 Read article
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RTDS Hardware Implementation and Simulation of 3-ph 4-wire SHAF for Mitigation of Current Harmonics using p-q Control strategy With Fuzzy Controller
Abstract: The main objective of this paper is to develop Fuzzy controller to analyse the performance of instantaneous realactive and reactive power (p–q) control strategy for extracting reference currents of shunt active filters underbalanced, un-balanced and balanced non-sinusoidal conditions. When the supply voltages are balanced andsinusoidal, the all control strategies are converge to the same compensation characteristics; However, thesupply voltages are distorted and/or un-balanced sinusoidal, these control strategies result in different …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 59–71 Read article
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27- Level High Frequency Transformer Based- MLI for Integration of Renewable Energy
Abstract: This research proposes a unique high-frequency transformer (HFT)-based multilevel inverter(MLI) with 27 levels can be constructed with a single DCpower supply and twenty switching devices. The proposedMLI topology comprises three medium frequency isolationtransformers, each with a different rated voltage. Since thetransformers used in MLI operate at high frequencies, thesuggested system has a smaller volume and weight. Acascaded H-bridge (CHB) connects each transformer'sprimary windings, and the secondary windings areconnected in series …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 2, 2023 · pp. 1–11 Read article
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Enhanced Oil Recovery through the Application of Nanoparticles with Irvingia Gabonensis in Flooding Process in the Reservoir
Abstract: This experimental investigation is aimed at establishing the ability of nanofluids formula from a mixture of nanoparticles and oil extracted from Irvingia gabonensis (bush mango) in enhancing recovery from oil reservoir. The laboratory study involved the use of core flooding unit, crude oil, brine, nano-particles and Irvingia gabonensis. In this study, nanofluids formulated from nanoparticles of aluminum oxide (Al 2 O 3 ) and zinc oxide (ZnO) respectively were used …
Published in Journal of Petroleum Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 1–9 Read article
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Effect on Welding Parameters on FSW of Aluminium Alloys 7075 T6 with Varying Tool Geometry
Abstract: The present study is to investigate effect of tool pin profile over the friction stir welding of aluminium alloys 7075 T6. The welding process is to be conducted on varying the welding process parameters such as tool rotation speed (rpm), welding speed (mm/min) and tool pin profile. In this work, tensile strength tool rpm increase UTS in FSW joint decease up to certain level, including effect tool rpm on weld …
Published in Journal of Production Research & Management · Vol. 7, Issue 3, 2017 · pp. 27–32 Read article
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Optimization of TIG Welding Process Parameters of Ss 304 By Taguchi Method and Grey Relation Analysis
Abstract: TIG welding is one of the widely used welding processes in manufacturing industries. In any of the welding processes, many factors play a vital role in obtaining strength of welding joint like bead geometry. So, there is need of optimizing the TIG process for a better so in this paper optimization of various TIG parameters have been done like bead geometry, penetration, and HAZ (Heat Affected Zones) on the basis …
Published in Journal of Production Research & Management · Vol. 9, Issue 3, 2019 · pp. 27–40 Read article
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Operational Modeling of Cutting Parameters Influence on Power Consumption and Surface Roughness in CNC Turning of AISI 304
Abstract: This paper describes the power consumption and surface roughness predictive model development in computer numerical control (CNC) turning of AISI 304 austenitic stainless steel using Taguchi method and response surface method (RSM). The experiments are designed and conducted based on Taguchi’s design of experiments (DoE) with cutting speed, feed rate, depth of cut and nose radius as the process parameters. Signal-to-noise (S/N) ratios of responses are calculated to identify the …
Published in Journal of Production Research & Management · Vol. 3, Issue 1, 2013 · pp. 8–15 Read article
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3D Simulation of Multi-Gate Mosfet Analysis for Analog Circuit Design Parameters
Abstract: Chip density and performance improvements of semiconductor devices have been driven by their aggressive scaling. The performance of multi-gate FET for analog applications is explored in this paper. Analog operation of CMOS devices and its parameters are very important for future cutting edge technologies. The multi-gate technology shows excellent scalability and better immunity to short channel effects in MOSFETs. They are being easily assessed for CMOS applications beyond the 45 …
Published in Journal of Semiconductor Devices and Circuits · Vol. 1, Issue 2, 2014 · pp. 1–8 Read article
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VLSI Implementation of Bit/Digit Serial-Parallel Finite Field GF (2m) Multiplier Using Standard Basis
Abstract: A Finite Field is a field with finitely number of elements. It is also known as Galois field in which the elements can take q different values is referred as GF (q).Finite fields are of great interest in applications like Elliptic Curve Cryptography (ECC), error control and coding. In this paper, we present a simple implementation of finite field GF (2m) multiplier. Here the main aim is to enhance the …
Published in Journal of Semiconductor Devices and Circuits · Vol. 1, Issue 3, 2014 · pp. 1–6 Read article
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AMBA 3 AHB Lite Protocol design and verification
Abstract: As technology progresses, the amount of logic and transistors that can be packed on a device that runs an extreme integrated SoC design grows. The most significant feature of a SoC is its connectivity. In most SoCs, the AMBA (Advanced Microcontroller Bus Design) bus is the most often used on-chip bus design.AMBA was first introduced by ARM. The AMBA AHB-Lite synthesizable design meets the requirements of high-performance synthesizable designs. Because …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 3, 2021 · pp. 47–55 Read article
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Comparative studies of Oxidation and hot corrosion behaviors of uncoated and detonation gun sprayed Cr3C2-25NiCr coating on SA-213 boiler steel at 8000C
Abstract: Fe-based alloys suffer oxidation and hot corrosion when the surfaces were in contact with air (oxidation) as well as the salty atmosphere (Hot corrosion) at elevated temperatures. In these atmospheric conditions, non-protective oxide Fe2O3 was formed on the surface of alloys. Oxidation and hot corrosion have been recognized as a major problem in the applications of the diesel engine, boilers, gas turbines, and chemical power plant etc. Detonation-gun sprayed Cr3C2-25NiCr …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 1, 2019 · pp. 17–22 Read article
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Development of Mathematical Model for Tool Wear Rate Using 3-Level Response Surface Methodology
Abstract: Tool wear is the progressive loss of material from the surface of tool in the form of very small metallic particles. From decade tool wear rate was used as major criteria to predict the tool life. However, tool wear rate only measures principle wear, i.e., flank wear and face wear. In order to assesses the real damage to the tool and consider other tool wear like chip, notching, primary and …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 2, 2016 · pp. 1–10 Read article
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Broadband, M- shaped Rectangular Cutting Slotted Antenna at 2.5 GHz for Mobile and WLAN Application
Abstract: In this paper, the authors have discussed M-shaped cutting slotted antenna for mobile and WLAN applications. After designing the antenna on 2.5 GHz frequency, the authors used the dielectric substrate 4.4, loss tangent 0.0012 and having the substrate height 1.6 mm and the antenna is showing the bandwidth 52.4%; the maximum return loss is −14.5 db.
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 1, 2015 · pp. 5–8 Read article
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Carbon Nanotube Transistor Based Novel Ring Oscillator with Minimum Power Consumption at 32 nm Technology Node
Abstract: In this article an analysis of carbon nanotube field effect transistor based ring oscillator is performed. After analysis it was found that carbon nanotube transistor consumes less power in comparison to silicon transistor. CNFET is one possible candidate to substitute silicon-based integrated circuit (IC) technology, as the performance increase of conventional transistors witnessed during the last decades will arrive at its ultimate limits in the near future. Its present progress …
Published in Journal of VLSI Design Tools and Technology · Vol. 7, Issue 2, 2017 · pp. 51–54 Read article
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Analysis of Six-Pulse Bridge Circuits Including Zener and Semiconductor Diodes Part One
Abstract: This paper addresses the analysis of electronic bridge circuits including Zener and/or semiconductor diodes. The analysis is based on recently suggested models for these diodes. A compact Mathematica code written in the Versions 7.0, 11.3 and 12.2 simulating a six-pulse rectifier bridge circuit is then derived and mathematically implemented. It investigates the time-domain transient and steady-state analysis of several representative case studies. In principle, the computer simulation can yield the …
Published in Journal of VLSI Design Tools and Technology · Vol. 12, Issue 1, 2022 · pp. 14–22 Read article
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Examining the Influence of DEM Resolution in Flood Hazard Assessment using the Flood Modeller Pro 2D Solver
Abstract: Floods are the most frequent natural hazards that threat the human life, environment and infrastructure. The flood prediction models that have wide use in the recent years represent important tools for flood management decisions aiming to mitigate the impacts of the flood events. The accuracy of the constructed prediction models is based on the quality of the primary data, such as the terrain’s resolution. This study examines the effect of …
Published in Journal of Water Resource Engineering and Management · Vol. 4, Issue 1, 2017 · pp. 14–24 Read article
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PRICE CONCESSION ON AKURE RESIDENTIAL PROPERTY MARKET
Abstract: This research work examined the price concession on vacant land and developed residential property market in Akure, Nigeria. The data for the study was collected through structured questionnaire administered on the 20 Estate Surveying and Valuation practising firms in Akure as contained in the, 2018 register of the Heads of firms of the Nigerian Institution of Estate Surveyors and Valuers, Ondo State Branch. The records of the past sales transactions …
Published in Recent Trends in Civil Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 46–54 Read article
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A 32-Bit Booth Multiplier Design Using GDI Logic Style
Abstract: Gate diffusion input (GDI) is the newest technology of designing a low-power digital combinational circuit. This logic allows reducing power dissipation, delay and area of any digital logic circuit. The gate diffusion input logic allows implementation of a wide range of any complex logic function. These functions can be realized using only two transistors. This technique is preferred for designing fast using less number of transistors while improving logic level …
Published in Trends in Electrical Engineering · Vol. 5, Issue 3, 2015 · pp. 1–5 Read article