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85 articles for “Critical parameters”
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Ignition Characteristics for Thermal Runaways of Hazard Chemical Reactions of Different Degree of Reactions
Abstract: Thermal explosion characteristics of a hazardous chemical reaction of different reaction order have been investigated analytically and numerically for both Arrhenius and Frank-Kamenetskii approximation models for the rate of reaction. The critical conditions in the temperature-time, concentration-time, and temperature – concentration planes of solutions are presented. A comparison between the results of analytical solutions in these planes is offered. The solutions show that the critical states in the temperature-time plane …
Published in International Journal of Energetic Materials · Vol. 1, Issue 1, 2015 · pp. 31–55 Read article
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Improve the Process Parameters for Evaluation of Material Removal Rate (MRR) on Turning Operation using Carbide Insert Tool
Abstract: Abstract The Material Removal Rate (MRR) is a critical performance indicator in turning operations, directly influencing productivity, cost-efficiency, and part quality. In this study, the focus is on optimizing the process parameters to improve MRR during turning operations using carbide insert tools. Carbide inserts are favored in machining due to their high hardness, wear resistance, and ability to withstand elevated cutting forces, making them suitable for high-performance turning operations. The …
Published in International Journal of Manufacturing and Materials Processing · Vol. 11, Issue 1, 2025 · pp. 17–24 Read article
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Supercritical Fluid Extraction: Mechanisms, Applications, and Recent Developments
Abstract: Supercritical Fluid Extraction (SFE) is an advanced and versatile separation technique that harnesses the unique properties of supercritical fluids (SCFs) to extract a wide variety of compounds from both solid and liquid matrices. Supercritical fluids, which are substances at a temperature and pressure above their critical points, possess both liquid-like density and gas-like viscosity, making them highly effective solvents for extraction processes. This review delves into the underlying mechanisms of …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
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A Study on the Effect of Pulmonary Hygiene on Respiratory Functions in Chronic Obstructive Pulmonary Disease Patients at a Hospital in Erode
Abstract: Background: Chronic Obstructive Pulmonary Disease (COPD) is a common condition characterized by long-term airway blockage. Symptoms such as breathlessness during physical activity and fatigue significantly affect patients' quality of life (QoL), limiting their ability to engage in various physical activities. The aim of this study is to evaluate the impact of pulmonary hygiene on respiratory function in individuals with COPD. Design: A pre-experimental design using a one-group pre-test and post-test …
Published in International Journal of Nursing Critical Care · Vol. 11, Issue 1, 2025 Read article
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A Broad Review on the Impact of spring back/spring go During Bending Operation
Abstract: AbstractSpring back is the most important element impacting the perfection of sheet metal components because of the spring back properties of sheet metal, designing forming dies is particularly complex. This is a critical issue since spring back is a common forming issue with metal forming process using high-strength steel sheets. Once a stress is released, the material's elastic recovery forces the metal to spring back into shape. There are several …
Published in International Journal of Manufacturing and Materials Processing · Vol. 8, Issue 1, 2022 · pp. 14–19 Read article
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Modelling and Critical Analysis of a Two Stage Tubular Coil Launcher
Abstract: In the modern launching technology, emphasis has been increasingly focused on the fundamental parameters like velocity, precision control, efficiency and flexibility of the launch projectile. Electromagnetic launchers (EMLs) can significantly satisfy most of the above aspects and can be predecessor for the previous launching mechanisms. EMLs become an alternative to the cartridge launching, thereby avoiding the limitations associated with it. This article presents the modelling and analysis of a multistage …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 1, Issue 2, 2015 · pp. 17–24 Read article
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Deep Reinforcement Learning-Based MPPT for PV Systems Under Partial Shading: A Hybrid Metaheuristic-Optimized Control Framework.
Abstract: Partial shade and quickly changing environmental conditions make Maximum Power Point Tracking (MPPT) in photovoltaic (PV) arrays particularly difficult. In these situations, traditional algorithms frequently fail to find the global optimum or experience sluggish convergence and steady-state oscillations. To obtain reliable, real-time MPPT under non-uniform irradiance, this research suggests a hybrid control architecture that combines a deep recurrent reinforcement learning (DRL) agent with metaheuristic-based parameter optimization and a digital-twin training …
Published in International Journal of Electrical Power System and Technology · Vol. 12, Issue 1, 2026 · pp. 35–46 Read article
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Deep Reinforcement Learning-Based MPPT for PV Systems Under Partial Shading: A HybridMetaheuristic-Optimized Control Framework.
Abstract: Partial shade and quickly changing environmental conditions make Maximum Power Point Tracking (MPPT) in photovoltaic (PV) arrays particularly difficult. In these situations, traditional algorithms frequently fail to find the global optimum or experience sluggish convergence and steady-state oscillations. To obtain reliable, real-time MPPT under non-uniform irradiance, this research suggests a hybrid control architecture that combines a deep recurrent reinforcement learning (DRL) agent with metaheuristic-based parameter optimization and a digital-twin training …
Published in International Journal of Electrical Power System and Technology · Vol. 12, Issue 1, 2026 Read article
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Performance Improvement in Diffie–Hellman Algorithm
Abstract: ABSTRACT Communication is the important part in any type of network for making it possible to transfer data from one node to another. Communication needs quality and security for better performance and for acceptance of users and client companies. Quality is depending on length and a few different elements of community however safety could be very subject parameter in network as it is independent of community length and complexity. Safety …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 5, Issue 1, 2019 · pp. 20–23 Read article
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Studies on drying characteristics of wet biomass
Abstract: This work determines the drying characteristics (drying rate, critical moisture content, equilibrium moisture content) of the wet biomass sample in a tray dryer. The parameters studied were Weight of biomass powder (200/300 gm) and Moisture content (10, 20, 30, 40 %).
Published in International Journal of Renewable Energy and its Commercialization · Vol. 3, Issue 1, 2017 · pp. 16–23 Read article
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Some Geomechanical and Petrophysical Linkages Within Paleo-Sedimentary Beds of Ghana
Abstract: Instability issues have been a major challenge in the Sekondian Series of South-Western Ghana. This is particularly affecting civil works and environmental mitigation efforts across the formation as extensive weathered profile impedes structural integrity. Uniaxial Compressive Strength (UCS) of lithological units which is a critical stability measure in most engineering projects requires quality sample of appropriate dimension for its determination. Samples for this important design parameter cannot be easily obtained …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 6, Issue 1, 2020 · pp. 31–42 Read article
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Optimization of Nutritional Parameters for Production of Alpha Amylase Using Aspergillus oryzae MTCC 3017 by Central Composite Design
Abstract: Amylases are the most widely used enzymes that are used many sectors such as clinical, medical, analytical and industrial applications. Beside their use in starch saccharification they also find applications in food, baking, brewing, detergent, textile and paper industries. Increasing utility and consumption of amylase in different industries has placed a greater stress on increasing indigenous enzyme production and search of more rapid processes. The aim of the present investigation …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 2, Issue 1, 2016 Read article
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A Sensor Integrated Tool for Cutting Force Monitoring in Gantry Milling to Improve Flatness and Surface Finish: Review Study
Abstract: AbstractPrecision machining of sector plates plays a vital role in the efficient functioning of Air Pre-Heaters(APH), which are integral components of thermal power plants. These plates are subjected to harshthermal cycles and mechanical loads, making dimensional accuracy critical. For optimal heatexchange performance and mechanical reliability, it is essential to maintain tight manufacturingtolerances – flatness within ±400 microns and thickness up to 13 mm. Deviation from theseparameters can lead to air …
Published in International Journal of Manufacturing and Materials Processing · Vol. 11, Issue 1, 2025 · pp. 25–45 Read article
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Investigation of Tangential Shear Stress and Frictional Torque Coefficient over a Rotating Disk of the Rotor-Stator System
Abstract: Abstract The study investigates the prediction of tangential shear stress and the frictional torque coefficient over a rotating disk in a rotor-stator system under laminar inward flow conditions. The interaction between the rotating and stationary disks is governed by key parameters, such as volumetric flow rate, rotational speed of the disk, and the axial clearance between the two surfaces. These parameters are expressed in terms of dimensionless quantities, including the …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 11, Issue 1, 2025 · pp. 6–14 Read article
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CFD Analysis and Modification of Muffler of 1067 cc4 Cylinder Inline Engine for Better Performance
Abstract: Back pressure is one of the important parameter which determine the performance of the muffler. Pressure drop of the exhaust system includes losses due to piping, silencer, and termination. The most critical mechanical factor regarding backpressure of any commercial modified and available muffler is cross flow perforated tube in which the diameter of the perforated tube hole and porosity of the perforations are most critical. In this paper, the objective …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 3, Issue 1, 2017 · pp. 40–46 Read article
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Assessment of the Water Quality of Swimming Pools in the Holy City of Makkah Al-Mukarramah
Abstract: Assessment of the quality of water in the swimming pools is critical as it affects public health. In the present study, 42 water samples were collected from different swimming pools of Makkah Mukarramah and tested for different parameters like pH, total dissolved solids, salinity/conductivity, chlorine content, turbidity, and dissolved oxygen. The results were compared with recommended level to draw a conclusion about the degree of safety and the potential health …
Published in International Journal of Environmental Chemistry · Vol. 4, Issue 2, 2018 · pp. 34–42 Read article
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Analyze Effect Of Skew Angle On Performance of R.C Girder Bridge Deck
Abstract: Abstract - The performance of reinforced c oncrete (R.C) girder bridge decks is significantly influenced by geometric configurations, among which the skew angle plays a critical role. Skewed bridges are commonly employed to accommodate site constraints, road alignment, and river crossings, but they introduce complex stress distributions, torsional effects, and differential deflections compared to straight bridges. This study investigates the effect of varying skew angles on the structural behavior of …
Published in International Journal of Structural Engineering and Analysis · Vol. 12, Issue 1, 2026 Read article
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A Survey of Key Policy and Ciphertext Policy Attribute based Encryption on Various Security and Efficiency Parameters
Abstract: ABSTRACTCloud is providing various services and out of which storage is one such credential service. Many users are gaining benefits by storing their data in cloud because cloud provides unlimited storage, High speed Computations and better convenience. But the problem arises when the user has to store some critical data in the cloud. So, a promising Cryptographic scheme called as Attribute based encryption is needed which not only is showing …
Published in International Journal of Software Computing and Testing · Vol. 6, Issue 2, 2020 · pp. 45–52 Read article
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A parametric study for the behaviour of steel plate-anchor assembly embedded in concrete under cyclic loading
Abstract: Steel plate-anchor assembly embedded in concrete is a common type of connection system used for connecting structural steel members to concrete members. These assemblies are subjected to different loading cases depending on their use. Since the behaviour of such assemblies is quite complex and depends on a number of factors associated with different components, it was decided to adopt finite-element technique to obtain a reasonably accurate analytical solution for the …
Published in International Journal of Concrete Technology · Vol. 4, Issue 2, 2018 · pp. 21–36 Read article
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Analysis of Key Factors Affecting Labour Productivity in Building Rehabilitation Projects
Abstract: Productivity is a very challenging aspect and momentous concern in construction industry because it controls the overall project performance. Complications are typically related to the labour performance. In the construction sector, there are several internal and external aspects that are variables and are terribly troublesome to predict. Also, this results to never-ending deviation in productivity of labours we tend to come through at sites, so it’s momentous to assure decrease …
Published in International Journal of Sustainable Building Technology · Vol. 5, Issue 1, 2022 · pp. 13–34 Read article