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1006 articles for “extractant”
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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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Comparison of Bond Strengths of Nano and Microhybrid Flowable Composites for Orthodontic Bonding: An Invitro Study
Abstract: Introduction: When the orthodontic brackets are bonded to the etched enamel, the ideal orthodontic adhesive should have optimal bond strength and be able to withstand masticatory forces as well as orthodontic forces. At the same time, when the treatment is completed, the bracket should debond without causing any damage to the enamel. There have been many recent advances in composites in general and their applications in orthodontic use is questionable. …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 1–8 Read article
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Glass Fiber Layer Effect on Chemico-mechanical Properties of Light Cure Adhesive Systems
Abstract: Introduction: Orthodontic adhesives should have clinically acceptable shear and tensile bond strength to withstand masticatory forces and those generated by treatment mechanics. Mechanical properties of the adhesive, such as flexural modulus of elasticity, tensile strength, and compressive strength, are more heavily influenced by the resin matrix's Degree of cure (DC). Aim: The study compares the effect of the Glass fiber layer on Chemico-mechanical properties using three different light cure adhesive …
Published in Journal of Polymer & Composites · Vol. 11, Issue 1, 2023 · pp. 1–9 Read article
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Effect of Length and Tenor of the Introduction of Sansevieria cylindrica Fibers on the Mechanical Performance of Natural Fiber Composites
Abstract: The substitution of synthetic fillers, such as carbon black, with biobased ones in natural rubber (NR) is a trend of interest in view of increased sustainability and exploitation of agroforest waste in the materials sector. In this work, NR was filled with short fibers extracted from Sansevieria cylindrica (SC) leaves of various length (10, 20, 30, or 40 mm) and in different amounts (3, 6, or 10 g per 100 …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 94–101 Read article
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Production of Alum from Aluminium Drink Cans Waste for Water Treatment
Abstract: The graphite furnaces atomic absorption spectrophotometry (GFAAS) technique has been previously used to quantify the aluminium (Al) content in soft drinks made from aluminium cans over the course of a 12-month storage period. The current research aimed to determine the efficacy of alum obtained from waste soft drink cans compared to the alum obtained from local markets in treating water from Shatt al-Arab, Basrah, Khorramshahr, and Abadan, Iraq. The Shatt …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 102–109 Read article
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Mechanical Properties of Composites Made from Waste PET and Coconut Husk Fibres Using an Innovative Method
Abstract: The main purpose of this study was to develop a composite material based on two waste products, namely, polyethylene terephthalate (PET) bottles and coconut husk fibres using a simple innovative method to improve its mechanical properties. The fibres, after extraction, were treated with 5 wt% NaOH. They were then coated with a thin layer of polyester resin. The composite specimens were then manufactured in an industrial furnace. The shredded PET …
Published in Journal of Polymer & Composites · Vol. 11, Issue 3, 2023 · pp. 56–71 Read article
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Investigation on Mechanical Properties of Bamboo-Plastic Composites by Alkali Treatment and Illustration via Scanning Electron Microscopy
Abstract: The morphological properties, tensile and flexural strength of composite materials made of bamboo fibres and plastic were investigated. Bamboo-plastic composites (BPCs) were made from bamboo fibres, plastic, and urea formaldehyde (UF) resin to evaluate the effects on mechanical properties. Two different types of plastics, namely polypropylene (PP) and low-density polyethylene (LDPE) were used to make the composite fabrication. The bamboo fibres were extracted after soaking them in a sodium hydroxide …
Published in Journal of Polymer & Composites · Vol. 11, Issue 3, 2023 · pp. 86–95 Read article
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Power Quality Monitoring in Wind Solar Hybrid System
Abstract: With the development of new functionalities, solar and wind energy based hybrid systems are upcoming energy source with higher efficiency. Solar and wind energy being naturally available in abundance and non-polluting, is one of the most promising sources. Due to the development of modern power electronic devices, the power quality of wind solar hybrid system gets affected. Hence, due to the increasing usage of sensitive electronic equipments in wind solar …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 1, 2018 · pp. 16–23 Read article
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Design and Analyze of an International Common Grid to Mitigate Energy Crisis of Bangladesh
Abstract: In Bangladesh, the expected electrical power generation has not been increasing as demand for electrical power is growing fast as changing of civilization life. It has been well known that the electrical energy can be extracted more than local demand in China and Bhutan from the renewable energies such as wind energy and hydro power. To fulfil the demand of Bangladesh to lead modern life the electrical energy can be …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 2, 2018 · pp. 44–57 Read article
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Performance Evaluation of Active Power Filter for Aircraft System
Abstract: Sinusoidal current control approach for extracting reference currents for shunt lively energy filters were modified using genetic algorithm and its performances had been compared. The acute evaluation of comparison of the repayment functionality based on THD and speedwell be finished, and pointers may be given for the selection of method for use. The simulated effects the usage of MATLAB version are shown, and they will undoubtedly prove the significance of …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 1, 2017 · pp. 1–8 Read article
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Design and Control of Three Phase Grid Connected Solar PhotoVoltaic Power System
Abstract: As the world power utilization quickly increments with populace development, new power era limits are obliged to cover that request. So there is requirement for force era utilizing renewable sources. Henceforth photovoltaic system is actualized to tie with the force framework. Keeping in mind the end goal to concentrate greatest force yield from PV framework proficiently, MPPT system is used. A DC-DC converter utilizes voltage source inverter which is controlled …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 1, 2015 · pp. 20–32 Read article
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Control of a Grid-Connected Variable Speed Permanent Magnet Synchronous Generator Based Wind Power Generation System
Abstract: Variable speed wind turbines are more efficient compared to their fixed speed counterparts since maximum power is extracted over a wide range of wind speeds. In this work a grid-connected wind power generation system is modeled and implemented in Matlab/Simulink using a permanent magnet synchronous generator. A back to back space vector pulse width modulated voltage source converter converts the variable frequency generator currents and voltages into DC, then back …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 8–24 Read article
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Modeling and Control of A Grid Connected Wind Turbine Power System Under Variable Wind Speeds Using Doubly-Fed Induction Machine
Abstract: This paper focuses on the development of wind turbine system and extracting maximum power for variable speed constant frequency grid connected wind turbine power system with doubly fed induction generator. A voltage oriented control scheme is used for the control of both rotor side and grid side circuit. Pitch control mechanism is implemented for the power limitation at a wind speed greater than the rated speed. The DFIM stator side …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 108–124 Read article
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Performance of Smes Unit on Artificial Neural Network Based Multi-Area Agc Scheme
Abstract: The main objective of this paper is to develop Fuzzy controller to analyse the performance ofinstantaneous real active and reactive power (p–q) control strategy for extracting reference currents ofshunt active filters under balanced, un-balanced and balanced non-sinusoidal conditions. When the supplyvoltages are balanced and sinusoidal, the all control strategies are converge to the same compensationcharacteristics; However, the supply voltages are distorted and/or un-balanced sinusoidal, these controlstrategies result in different degrees …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 47–58 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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Design and Analysis of a Solar-Wind Hybrid System
Abstract: Renewable energy sources like wind and solar energies can be combined to increase the totalpower generation and thereby increase the efficiency of the system. The combination alsoprovides a means to overcome the intermittent nature of the solar and wind renewable energysources, since one source can be used for power generation when the other is not available.AC-DC converters are used to convert the alternating voltage of the wind generator to aconstant …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 1, 2020 · pp. 1–8 Read article
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A Brief Review on Photovoltaic Module
Abstract: The Sun's energy generated by Sunlight is a free and environmentally beneficial renewable energy source that doesn't get exhausted. The amount of solar energy that enters the earth every hour is sufficient to supply all of the energy needed for a year. In the modern period, we required electricity constantly. The usage of solar energy is intended for domestic, commercial, and industrial settings. Energy can be easily extracted from direct …
Published in Journal of Power Electronics and Power Systems · Vol. 12, Issue 3, 2022 · pp. 44–51 Read article
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Modeling of Maximum Power Point Tracking Controllers for Wind Generation System using Hill Climb Searching Technique
Abstract: In this paper, based on a low-cost, small-scale application, presents a Maximum Power Point Tracking (MPPT) controller for wind generation systems (WGS). The Hill Climb Search approach served as the foundation for the development of the MPPT algorithm. To account for the inertia of wind turbines, an enhanced hill-climb searching approach has been created as a fundamental component of the max-power extraction algorithm. Under varying wind conditions, the generator can …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 3, 2023 · pp. 39–47 Read article
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GAS HYDRATES AN UNCONVENTIONAL RESOURCE FOR FUTURE
Abstract: AbstractThis paper presents an overcome of Gas hydrates (GH) as a potential alternate to India’s energy source. Gas hydrates are Icy-white crystalline form approximately 99% of gas and 1% of water which are found under high pressure & low temperature in places such as permafrost (polar) region, shallow offshore sediments of arctic &sub-arctic region, and Deep ocean sediments in the tropic regions. This term have attracted some Energy-Starving countries like …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 22–26 Read article
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Methane Recovery From Gas Hydrate By Cool Frack Method
Abstract: Methane in Gas hydrates are the most believed energy source for the future. These are solid crystalline ice with hydrogen bonded water molecules, which traps the guest molecules such as methane, propane, H2S, etc., in its cages. It commonly found in permafrost and deep oceanic sediments and occur in oil and gas pipelines. The extraction of methane from gas hydrates without any geo-hazard and economic efficient is what still a …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 32–39 Read article