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172 articles for “active air”
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Active versus Passive Microbiological Air Sampling Risk Assessment: Relation and Comparative Study in Pharmaceutical Industry
Abstract: Microbiological environmental monitoring of pharmaceutical manufacturing area is an essential task for control of the quality during medicinal dosage forms production. However, thorough scientific approach is critical to elucidate the full potential of microbiological test results and its significance. In the present study, 205 passive and 451 active air samples were withdrawn during course of ten months from air in class C production facility, dedicated for manufacturing of liquid and …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 7, Issue 1, 2016 · pp. 13–27 Read article
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Antimicrobial Susceptibility Profile of Airborne Bacteria and Fungi at Owena Market, Osun State, Nigeria
Abstract: Environmental conditions and human activities influence the ubiquity and diversity of microorganisms in the atmosphere thereby acquiring the ability to resist antibiotics which poses serious public threat. Airborne bacteria and fungi isolated using settling plate method from three different points (where kolanuts, meat and onions are sold) at Owena Market, Osun state, Nigeria were assayed for antimicrobial susceptibility using disc diffusion. The microorganisms were identified as Staphylococcus aureus, Bacillus subtilis, …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 7, Issue 2, 2017 · pp. 12–16 Read article
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Performance Evaluation of Neural Network and Conventional Control Techniques Based Shunt Active Power Filter for Constant Frequency Aircraft Power System
Abstract: Synchronous reference frame strategy for extracting reference currents for shunt active power filters have been modified using artificial neural network and its performances have been compared. The acute analysis of comparison of the compensation capability based on THD and speed will be done, and recommendations will be given for the choice of technique to be used. The simulated results using MATLAB model are shown, and they will undoubtedly prove the …
Published in Journal of Aerospace Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 1–9 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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Fuzzy Logic Controlled Shunt Active Power Filter for Constant Frequency Aircraft Power System in Balanced and Unbalanced Loads Conditions
Abstract: Synchronous reference frame technique for extracting reference currents for shunt active power filters has been assessed for 400 Hz aircraft electric power system. From that point forward, its performance has been compared when optimized using fuzzy logic control. Critical analysis of comparisons of the compensation ability of these two techniques based on THD and compensation time will be done, and suggestions will be given for the selection of the best …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 79–88 Read article
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Comparison of Control Strategies using Soft Computing Techniques for Shunt Active Power Filters in Aircraft Power Utility of 400 Hz
Abstract: Three different control strategies for extracting reference currents for shunt active power filters optimized using adaptive tabu search and genetic algorithm have been compared and their performance has been evaluated under different load conditions. The compensation ability of different control strategies will be compared and suggestion will be given for optimum strategy to be used under different loads. Simulation results using MATLAB have been included.Keywords: Active power filter (APF), constant …
Published in Journal of Aerospace Engineering & Technology · Vol. 4, Issue 1, 2014 · pp. 9–21 Read article
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Comparison of Simulations Results of Fuzzy Logic, Neural Network and Conventional Scheme Based Controller for SAF in Constant Frequency Aircraft System
Abstract: SRF control strategy for finding reference currents for active power filters have been optimized using artificial neural network, fuzzy logic control and their performances have been evaluated. The acute analysis of comparison of the compensation capability based on THD and speedwell be done, and recommendations will be given for the choice of technique to be used. The simulated results using MATLAB model are shown, and they will undoubtedly prove the …
Published in Journal of Aerospace Engineering & Technology · Vol. 7, Issue 1, 2017 · pp. 1–9 Read article
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Simulation and Performance Based Comparison of Artificial Intelligence Based Shunt Active Power Filter in High Frequency Aircraft System for Power Quality Improvement
Abstract: Synchronous reference frame strategy for extracting reference currents for shunt active power filters have been optimized by using fuzzy logic control and adaptive tabu search algorithm respectively; their performances have been compared. The acute analysis of comparison of the compensation capability based on THD and speed will be done and recommendations will be given for the choice of technique to be used. The simulated results using MATLAB model are shown …
Published in Trends in Electrical Engineering · Vol. 6, Issue 1, 2016 · pp. 32–41 Read article
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Genetic Algorithm Application in Shunt Active Power Filter Applied in Constant Frequency Aircraft System
Abstract: Constant Instantaneous Power Control(CIPC) technique for extracting reference currents for shunt active power filters have been optimized using Genetic Algorithm and its performances have been compared. The delicate analysis of assessment of the compensation ability based on THD and compensation time will be done, and commendations will be presented for the preference of technique to be used. The simulated results using Simulink model are shown, and they will indubitably demonstrate …
Published in Journal of Aerospace Engineering & Technology · Vol. 8, Issue 1, 2018 · pp. 44–50 Read article
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A Comparative Study of ANN and Traditional Control Techniques based Active Shunt Power Filter for 400 Hz Aircraft Electric Power System
Abstract: Sinusoidal current control strategy for extracting reference current for shunt active power filters have been modified using artificial neural network (ANN) and its performances have been compared too. The acute analysis of comparison of the compensation capability is based upon THD, speedwell and recommendations will be given for the choice of technique to be used. The simulated results using MATLAB model are shown in this paper, and they will undoubtedly …
Published in Trends in Electrical Engineering · Vol. 6, Issue 1, 2016 · pp. 42–49 Read article
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Comparative Critical Analysis of Control Techniques Optimized using ATS Algorithm and Conventional Control Techniques Applied in Shunt Active Power Filter for Total Harmonic Reduction for Power Electronic Converters in High Frequency (400 Hz) Aircraft Sys
Abstract: Three different conventional control strategies used for extracting reference currents for shunt active power filter and optimization of these strategies using Adaptive Tabu Search have been compared and their performances have been evaluated under different balanced and unbalanced loads connected together. The compensation ability of different control strategies will be compared, and suggestion will be given for optimum. Simulation results using MATLAB have been included. Keywords: Active powers filter (APF), …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 44–52 Read article
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Comparative Critical Analysis of Power Quality Improvement of Constant Frequency Aircraft Electric Power System Using Fuzzy Logic, Neural Network and Conventional Control Scheme
Abstract: Sinusoidal current control strategy for extracting references current for shunt active power filters have been modified using artificial neural network, fuzzy logic control and its performances have been compared. The acute analysis of comparison of the compensation capability based on THD and speedwell be done and recommendations will be given for the choice of technique to be used. The simulated results using MATLAB model are shown and they will undoubtedly …
Published in Journal of Aerospace Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 10–19 Read article
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A Novel Optimized Shunt Active Power Filter using GA and ANN in Constant Frequency Aircraft System
Abstract: Constant instantaneous power control strategy for extracting reference currents for shunt filters have been changed with the use of Artificial Neural Network and Genetic Algorithm primarily based controller and their performances were compared. The acute evaluation of comparison of the repayment capability mostly based on THD and velocity could be carried out, and guidelines might be given for the selection of the technique for use. The simulated effects the use …
Published in Journal of Aerospace Engineering & Technology · Vol. 8, Issue 1, 2018 · pp. 36–43 Read article
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A Novel Improved Model of Three-phase Shunt Active Power Filter using Adaptive Tabu Search and Genetic Algorithm in Aircraft Power Utility of 400 Hz
Abstract: A new improved model of aircraft shunt filter has been proposed in this paper. The shunt active power filter model has been improved using Adaptive Tabu Search Algorithm and Genetic Algorithm. ATS algorithm has been used to obtain the optimum value of parameters of the PI controller; whereas Genetic Algorithm has been used to find the optimum value of filter inductor used in active filter. The new improved model of …
Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 3, 2013 · pp. 6–14 Read article
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Simulation and Performance based Comparison of GA-Fuzzy-ANN based Shunt Active Power Filter for Power Quality Improvement in High Frequency Aircraft System
Abstract: A novel improved artificial neural network control primarily based craft shunt filter has been projected during this paper. The shunt active power filter model has been improved using Genetic algorithmic program and fuzzy logic. Genetic algorithmic program has been accustomed realize the optimum value of filter inductor; whereas fuzzy logic controller has been utilized in voltage control loop of the filter. The advance within the control scheme using artificial neural …
Published in Journal of Aerospace Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 62–70 Read article
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Study and Analysis of Polymer / Composite Thermal Insulation Material and Comfort Based Building Simulation with Applicability of Evaporative Cooling
Abstract: In India, about 35% of India's electrical energy is absorbed by buildings. Of this, the significant consumption is for the cooling purpose in building. Passive cooling systems, by comparison consume considerably less energy than mechanical cooling systems. Therefore, it is very important to understand the applicability of the passive cooling system by conducting comfort-based simulation of building as well as an examination of the influence of thermal insulation composed of …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 21–29 Read article
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Analysis of Flow through Main Engine Control Unit (MECU) of a New Aircraft Fuel Control System under Various Aircraft Acceleration
Abstract: A fuel control system is being designed and developed for a new aero engine of afighter aircraft. But existing facility doesn’t support the full operational testing of theindividual components of aircraft fuel control system under various aircraft accelerationconditions.In this paper theoretical analysis has been done to check the flow distribution ofone of the basic systems i.e. Main Engine Control Unit (MECU) under various aircraftaccelerations. It has been observed that, in …
Published in Recent Trends in Fluid Mechanics · Vol. 1, Issue 2, 2014 · pp. 1–12 Read article
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Effect Of Different Shapes Of Air Diffusers On Removal Of Chemical Oxygen Demand Of Wastewater In Activated Sludge Process
Abstract: AbstractOne of the challenges faced in activated sludge process is the low solubility of oxygen in wastewater, affecting the microbial activity due to mass transfer limitations and ultimately hampering the effluent quality. To overcome this limitation various types of diffusers have been in use but the configuration in which the aerators must be placed is still an open question. A series of experiments were conducted using different shapes of diffuser …
Published in Journal of Water Resource Engineering and Management · Vol. 7, Issue 2, 2020 · pp. 9–14 Read article
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Analysis of the Wave Function of Perturbed Ionospheric Waves for Communication Signals
Abstract: Our daily communications and navigational systems rely on the ionospheric conditions, and this sensitive region of the atmosphere is traversed and governed by radio and global positioning system (GPS) signals which broadcast on bouncing off the ionosphere to reach their destinations. All the communication signals can be interfered with modifications because of the changes in the ionosphere's density and its composition so that large percentage of the free electrons in …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 13, Issue 3, 2024 · pp. 13–20 Read article
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Assessment of Morphology and Land use Induced Environment Dynamics in Tikra Watershed of Brahmani River Basin
Abstract: This study examines the Tikra Watershed, a mining region in Talcher, Odisha, India, through the lens of its drainage system, land use changes, and environmental factors. Utilizing diverse datasets including DEMs, satellite imagery, and climate data, the study employs morphometric analysis, LULC change detection, and statistical techniques to gain insights into the watershed's characteristics and dynamics. Morphometric analysis reveals a compact drainage pattern with moderate stream development, indicating balanced interactions …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 12, Issue 2, 2023 · pp. 21–34 Read article