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653 articles for “PAC”
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The advanced bioceramics production using process of vibroturbulization
Abstract: Currently, bioceramics are widely used in medicine as dental and bone implants. Surgical bioceramics are used regularly. Joint replacements are usually coated with bioceramics materials to reduce wear and tear and inflammation. Pacemakers, kidney dialysis equipment, and respirators are more instances of bioceramics being used in the medical field. The production process of bioceramics consists of the following four main steps: preparation of powder with a grain size of not …
Published in Journal of Materials & Metallurgical Engineering · Vol. 12, Issue 2, 2022 · pp. 10–13 Read article
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Low-Complexity VLSI Hardware Design for DWPT
Abstract: AbstractThis paper presents a low-complex discrete wavelet packet transform (DWPT) architecture design for power constrained and cost sensitive healthcare applications. The multiplier-adder unit of the proposed multiplier-based designs of DWPT is replaced by the shift-add unit to reduce the area complexity of parallel structure. The proposed low-complexity multiplier-less design could be used an alternative to the existing multiplier-based design for hardware efficient realization of multi-level DWPT.Keywords: DWPT, Hardware complexity, VLSI, …
Published in Journal of Microelectronics and Solid State Devices · Vol. 4, Issue 3, 2017 · pp. 28–32 Read article
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Built in Self Repair for Embedded Memories: A Survey
Abstract: Memory is a significant part of every single computing system. In SOC (System-on-a-chip), 90 to 92% of the total chip zone is enclosed by embedded memories (ITRS 2009) and that means memory density is higher than the logic density. Consequently testing and diagnosis of memories are imperative issues in the SOCs. Revenue of memory is pretentious by the accountabilities present in memory which also distresses the yield of SOC. Built …
Published in Journal of Microelectronics and Solid State Devices · Vol. 2, Issue 1, 2015 · pp. 18–22 Read article
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A Study On Power Losses And Reduction of Power Losses In Power System
Abstract: Now the world's power supply system is a large unit, large grid, high voltage as the main characteristics of the centralized single system. Although the power load of the world's number is powered by such a single large power grid, the demand for quality and safety reliability of energy and power supply is increasing in today's society, and the large power grid cannot meet this requirement because of its own …
Published in Journal of Microelectronics and Solid State Devices · Vol. 8, Issue 3, 2021 · pp. 16–25 Read article
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A simulation based study of Capacitor-less Low-Dropout Regulator (LDO)
Abstract: Low-dropout (LDO) regulators have become an essential part of IC design for managing power consumption, this used large capacitors which increases the pin count and also occupies more space in chip. As the order of electronics items increses the the demand of LDO also increases.This is used used with switching regulators to defeat the value of noise and various unwanted signals and provided a low noise output In this work …
Published in Journal of Microelectronics and Solid State Devices · Vol. 8, Issue 3, 2021 · pp. 11–15 Read article
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Planar Light wave Circuits: Reviews and Applications
Abstract: PLCs are waveguide devices that integrate fiber-matched optical waveguides on a silicon or glass substrate to provide an efficient means of interaction for guided-wave optical signals. PLCs are used in optical wavelength-division multiplexing, time-division multiplexing systems, and subscriber networks. This study examines recent advancements in PLC technologies such as arrayed-waveguide grating multiplexers, optical add-drop multiplexers, and hybrid optoelectronics integration technologies, as well as their future possibilities. Silicon photonics has lately …
Published in Journal of Microelectronics and Solid State Devices · Vol. 9, Issue 1, 2022 · pp. 26–28 Read article
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STM32 MCU-based System for Testing Parameters of Lithium-Ion Batteries
Abstract: The Automobile manufacturing sector’s fast-paced advancement has raised concerns regarding energy conservation and reduction of emissions. To address this, electric vehicles have become a crucial solution, with lithium batteries as a core component. This paper presents the designing a test system for measuring the parameters of lithium battery, with the STM32F411RE micro controller as the crucial element. In contrast to the domestic market, the parameter detecting system for lithium-ion batteries …
Published in Journal of Microelectronics and Solid State Devices · Vol. 10, Issue 2, 2023 · pp. 18–27 Read article
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Effect of Fusion Plasmas in Complete and Incomplete Fusion
Abstract: Abstract In an attempt to study the effect of thermal fusion plasma in complete and incomplete fusion, the collisional cross sections of several medium and/or heavy were measured with increasing plasma density, temperature and pressure and analysed with TALYS-1.4 code. The measured plasma density, temperature and pressure profiles are analysed with numerical model transport code PTRANSP, ONETWO and ASTRA and the corresponding data were used for calculations. The excitation functions …
Published in Journal of Nuclear Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 7–16 Read article
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Diversification of the Indian Nuclear Industry via Nuclear Cogeneration: Some Insights
Abstract: The Indian nuclear industry provides 2% of the electricity generated in India today. Other than its growing importance as a source of clean base load electricity in the clean energy transition as a complement to growing shares of variable renewables in India’s energy mix, it can continue to remain relevant and play a vital role in India in the years to come by suitably re-inventing itself to provide a variety …
Published in Journal of Nuclear Engineering & Technology · Vol. 12, Issue 1, 2022 · pp. 22–30 Read article
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Improved Thermal stability of Boron treated Coir MDF boards
Abstract: Coir fibre a biodegradable natural fibre extracted from the husk of the coconut (Cocos Nucifera L.), traditionally used for manufacturing ropes, carpets or mattresses is now being used for manufacturing composite panel boards and could extensively substitute for wood and engineered wood products whose applications ranges from packaging to construction materials. Coir composite panel board samples were chemically treated with preservative solutions carrying combinations of Borax and Boric Acid with …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 33–40 Read article
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Improving Photocatalytic and Antibacterial Properties of Zein/Polyvinyl Alcohol Polymer Composite Film by Dispersing TiO2 Nano Particles
Abstract: Zein/polyvinyl alcohol/nano-TiO2 composite film was effectively blended using a solution casting method. Mechanical, photocatalytic, and antibacterial properties of the composite film were evaluated. The breaking elongation of the composite film increased up to the maximum loading of 0.4% of nano-TiO2. The humidity and moisture content relationship was estimated with standard modified models of Halsey, Oswin, Chung Pfost, and Henderson. It was found that the Halsey model was the most suitable …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 110–127 Read article
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Developments in Functional PVC and Its Composites
Abstract: The main aim of this review study is to summarise the progress and recent modifications in the area of functionalised PVC including chlorinated PVC, PVC copolymers and their composite developments. Functionalized PVC and its copolymers shown very good improved properties which enhanced the PVC application domain as compare to other polymers. Due to the higher chlorine content polyvinyl chloride (PVC) shows higher mechanical and fire-resistive properties which are suitable for …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 55–67 Read article
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Role of Bimetallic (Ag-Cu) Nanoparticles on the Structural Properties of PVA/PVP Blend Green Nanocomposites
Abstract: This study reports the green synthesis of polymer blend nanocomposites of Polyvinyl alcohol (PVA) and Poly vinylpyrrolidone (PVP) embedded with Silver (Ag), Copper (Cu) mono metallic and Silver-Copper (Ag-Cu) bimetallic nanoparticles (NPs), generated using plant mediated solution casting method. The formation of blend, polymer-polymer interactions, interaction between polymer and nanoparticles and role of the nanoparticles on the interactions among PVA/PVP blend nanocomposites were studies by FTIR spectroscopy. The crystallinity of …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 11–19 Read article
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Influence of B2O3 and Li2O on Physical, Thermal and Spectroscopic properties of Bi2O3-B2O3-CdO-Li2O glass system
Abstract: ABSTRACT Bismuth Borate based glasses with compositions BiBCL: 40Bi2O3-(40-X) B2O3-20CdO-XLi2O where x=5,10,15,20,25 mol% were prepared by conventional melt quenching technique. X-ray diffraction (XRD), differential thermal analysis (DTA), UV-VIS absorption spectroscopy, Fourier transform-infrared (FTIR), and Raman spectroscopies were used to analyse the synthesized samples. Through XRD and SEM studies, the synthesized glasses amorphous nature was confirmed. To evaluate the physical and structural characteristics of the glasses, calculations were made for the …
Published in Journal of Polymer & Composites · Vol. 11, Issue 1, 2023 · pp. 51–62 Read article
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Effect of Zr, Fe Mono, Bimetallic Nanoparticles on the Electronic Properties of PVA/PVP Polymer blend
Abstract: AbstractThis paper describes the environmentally friendly production of polymer blend nanocomposites (PBNCs) made of polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP) and embedded with Zirconium(ZrO2), Iron (Fe2O3), and Zirconium-Iron (Zr-Fe), mono and bimetallic nanoparticles (NPs). FTIR spectroscopy was used to investigate the blend's development, interaction between polymers and nanoparticles, interactions between polymers and one another, and the impact of nanoparticles on interactions within PVA/PVP blend nanocomposites. With the addition of nanoparticles …
Published in Journal of Polymer & Composites · Vol. 11, Issue 1, 2023 · pp. 72–80 Read article
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Torque Ripple Reduction in Induction Motor Drive Using Direct Torque Control Technique with Space Vector Modulation
Abstract: Three phase squirrel cage induction motor drives are widely used in industries for variable speed applications. This paper proposes the design and simulation of an induction motor (IM) drive with DTC-SVM (Direct Torque Control–Space Vector Modulation). The IGBT/Diode inverter switches are controlled by the DTC-SVM technique. The synthesis of vector selection table depends on the rotational direction of the stator flux vector. The control algorithm in DTC-SVM methods are based …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 1, 2015 · pp. 33–39 Read article
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Design and Simulation of Improved Multilevel Inverter For Solar Photovoltaic Applications
Abstract: The energy is extending rapidly, anyway will stand up to the modernization of India and fiscal turn of events, further reviving the pace of the test, especially considering the improvement of India's basic amassing approach needs. Starting late, influence age has extended rapidly, yet the business is filled by neighborhood dispersion associations, circulation frameworks and transmission frameworks, and the cash related condition is moderate and convincing. The display of photovoltaic …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 2, 2020 · pp. 34–46 Read article
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Analysis of Cylinder Head of CI Engine
Abstract: The main aim of this work is to predict the look performance supported stress/strain and behavior of plate below numerous operational conditions. the results of varied engineering operational conditions like combustion gas most internal pressure, thermal stress behavior and fatigue stress of the plate are analyzed. In any operating engine, the piston and therefore the plate ar the foremost vulnerable members because of enhanced mechanical and thermal loadings. The mechanical …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 1–4 Read article
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A New Description of Multi-phase Flow Behavior at Boundary Layers of Low-permeability Porous Media
Abstract: At present, the recovery factor of low permeability oilfield in China is only about 20%, which is enormously lower than the recovery factor index of 60% by using water-chemical flooding in medium and high permeability layer. There are a lot of causes that resulted in low recovery factor, among them that the complex pore structure, tiny throat, large pore throat ratio and non-Darcy flow in low-permeability oil layer are the …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 1, 2013 · pp. 1–7 Read article
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Formation of Reaction Bubbles in FCC Riser Reactor
Abstract: For modeling FCC unit, art of defining undefined hydrocarbon misxtures in conjunction with application of two different specialized fields of Chemical Engineering–Chemical Reaction Engineering (CRE) and Computational Fluid Dynamics (CFD) are required. CRE needs elaboarte and appropriate definition of undefined mixture and their chemical kinetics, whereas CFD needs solution of more regorous differential equations to define fluctuating and turbulent flow. Most of the reported works in available literature seems to …
Published in Journal of Petroleum Engineering & Technology · Vol. 1, Issue 1-3, 2011 · pp. 16–27 Read article