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1227 articles for “Phases”
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FROM SPEECH TO SONGS VIA RECITAL – A CASE OF PHASE TRANSITION? A FRACTAL STUDY OF TAGORE’S WORK
Abstract: The work explores the variation of scaling exponents in a song, recitation and reading with the same lyrical content. Detrended Fluctuation Analysis (DFA) have been employed to find the long range temporal correlations (or the Hurst Exponent) present in each form of the auditory signal. Perceptually, it is known that the addition of rhythm and pitch, amplitude modulation distinguish between these different forms of audio signals, but the mathematical analogue …
Published in Trends in Electrical Engineering · Vol. 9, Issue 3, 2019 · pp. 30–36 Read article
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The Impact of Faults in Three-phase Transmission Line and Their Detection Techniques: A Review
Abstract: A three three-phase AC transmission line serves to be a key player in the electric power system. Fault occurrence in the lines disturb the continuity of electricity supply and lead to power losses. Various faults like LG, LL, LLG, LLL, LLLG, symmetrical faults, etc. occur in the transmission lines and tend to reduce the system efficiency. During such abnormal conditions, faults are detected through manual and/or automated systems. In an …
Published in Trends in Electrical Engineering · Vol. 13, Issue 1, 2023 · pp. 33–38 Read article
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Numerical Model for Water Hammer in Homogeneous Equilibrium Two Phase Fluid
Abstract: Generally, water hammer can occur in any thermal-hydraulic systems. Rapid closing or opening of a valve causes pressure transients due to the sudden transformation of kinetic energy into the potential energy. The resulting high pressure surge upstream of the valve leads to the temporary increase in pressure. If the increased pressure surpasses the safety margin for the pipe, it can lead to failure of the pipeline. A mathematical model is …
Published in Journal of Nuclear Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 29–43 Read article
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Effect of hybrid plant-based cutting fluid in turning operation of EN19 steel and modelling of heat transfer equation for multiple phase colloids
Abstract: This article describes a project where an alternative to conventional Mineral Oil (MO) based cutting fluids is tried on the turning operation of steel samples. The deposit of petroleum is getting depleted day by day, the pollution due to fossil fuel is increasing exponentially and petroleum is getting more and more expensive. Due to these reasons, nonpetroleum (MO) based alternative cutting fluids have been in business for quite a while. …
Published in Journal of Polymer & Composites · Vol. 11, Issue 12, 2023 · pp. 175–185 Read article
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Lean Design Management as a Solution for Delays in Design Phase
Abstract: The results of this study reveal that traditional project management has a negative impact on the performance of construction projects and addresses its weaknesses in the design stage. Poor quality documentation from poorly managed design projects leads to budget overspending, delay, rework, and disputes. This paper emphasizes the importance of technical cooperation and highlights the lack of focus on value and waste in design development. Lean Design Management (LDM) is …
Published in International Journal of Architectural Design and Planning · Vol. 2, Issue 1, 2024 · pp. 30–39 Read article
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Boron Nitride Unleashed: Revolutionary Insights into Its Superhard Phases and Machining Aptitude
Abstract: Exploration from the prehistoric era has proven steel to be a hard substance. According to research, the four main crystalline forms of boron nitride are graphitic, cubic, rhombohedral, and wurtzitic. Better hard materials for industrial processes have been provided by diamond, hard ceramic, and cermet in the process of developing the front of the script, which is descriptive. Turning, cutting, drilling, boring, and grinding of hard materials have been linked …
Published in Journal of Catalyst & Catalysis · Vol. 11, Issue 2, 2024 · pp. 17–24 Read article
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Utilizing circulation-derived cancer cells to evaluate patients with surgically treated stages I–IIIA NSCLC throughout the preoperative phase
Abstract: Context: When a tumor is considered resectable, surgery is viewed as the primary treatment approach for both early-stage and locally advanced non-small cell lung cancer (NSCLC). One of the most exciting areas of cancer research in the past ten years is liquid biopsy, which offers a practical non-invasive method for cancer detection and tracking. Circulating tumor cells (CTCs) have been linked to a worse prognosis and increased chance of relapse …
Published in Research and Reviews : Journal of Surgery · Vol. 13, Issue 3, 2024 · pp. 17–28 Read article
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Impact of Phosphorus Application Rates on Yield and Yield Components of Common Bean (Phaseolus vulgaris L.) Varieties in Relation to Water Resources at Yabello, Southern Oromia, Ethiopia
Abstract: Common bean is a key legume crop with significant economic importance in Ethiopia, particularly in the southern region of Oromia. One of the primary constraints to common bean productivity in this region is the issue of soil fertility, which is exacerbated by water scarcity. This study was conducted to assess the impact of phosphorus (P) fertilizer rates on common bean growth and yield, as well as to identify sustainable management …
Published in Journal of Water Resource Engineering and Management · Vol. 11, Issue 3, 2024 · pp. 20–31 Read article
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Adaptation of Recently Released Andean Common Bean (Phaseolus vulgaris L.) Varieties for Potential Areas in Wolaita Zone, South Ethiopia Region
Abstract: An experiment was conducted during the growing seasons of 2022 to 2023 at Areka and Kokate stations to evaluate and select high-yielding Andean common bean varieties, focusing on seed yield and associated traits. Seven common bean varieties, along with a local check, were subjected to evaluation using a randomized complete block design with four replications. The analysis of variance revealed a significant difference (P < 0.01) in seed yield, pod …
Published in Research & Reviews : Journal of Botany · Vol. 14, Issue 1, 2025 · pp. 12–19 Read article
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Sustainable Electromagnetic Culinary Interface with Dual-Phase Filtration for Energy Efficiency and Environmental Impact Reduction
Abstract: Induct Net is an innovative kitchen appliance that seamlessly integrates advanced cooking technology with an inbuilt chimney system, marking a significant step towards sustainable culinary environments. This space-efficient device prioritizes energy efficiency, user safety, and environmental responsibility through its incorporation of internet of things (IoT) technology. Induct Net features a dual-filtration system with removable grease and charcoal filters, ensuring optimal performance while reducing waste. The IoT connectivity facilitates real-time monitoring, …
Published in International Journal of Electrical Machine Analysis and Design · Vol. 3, Issue 1, 2025 · pp. 45–50 Read article
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Advancements in Heat Exchanger Design for Improved HVAC System Efficiency
Abstract: Due to their direct impact on usage of energy, operational effectiveness, and environmental sustainability, heat exchangers have become vital components of the air conditioning, ventilation, and heating (HVAC) systems. The growing demand for energy-efficient HVAC solutions has driven extensive research and development efforts aimed at improving heat exchanger performance. Traditional designs, such as shell-and-tube and fin-and-tube heat exchangers, have long been utilized in HVAC applications. Nevertheless, these traditional types frequently …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 12, Issue 1, 2025 · pp. 44–52 Read article
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Analytical Technique Optimization and ICH-Directed Verification of a Reverse Phase HPLC Approach for Quantification of Bupropion Hydrochloride
Abstract: This method was developed for retention time, peak resolution and baseline response using Bupropion Hydrochloride under optimized conditions as validation. The method resulted in two well separated, well defined peaks, a minor peak at 7.5 minutes 12 mV and a main peak at 11.52 minutes 150 mV. At the same time, the baseline has remained stable during the chromatographic run and the fluctuations of noise are very small (0.5 ± …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 12, Issue 2, 2025 · pp. 47–54 Read article
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Kinetic Analysis of Structural Acrylic Curing by DSC: Polymerization and Phase Transition Optimization
Abstract: Differential Scanning Calorimetry (DSC) was used to analyse the thermal properties and curing behaviour of a structural acrylic adhesive at heating rates of 5, 10, and 15 °C/min. The study focused on the curing kinetics, glass transition temperature (Tg), specific rate (k), and activation energy (Ea) of the polymerization reaction. The material is tested according to ASTM 3418 standards. Results showed that increasing the heating rate shifted the endothermic curing …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 726–733 Read article
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Fabrication and Multi scale Characterization of Functionally Graded Composites Reinforced with Hybrid Ceramic–Metallic Phases
Abstract: Using composite materials as functionally graded composites (FGM) can improve its excellent material properties. In this work, magnesium peroxide, silicon carbide, and aluminum are used to create four-layer FGMs. The sintering process, which blends the particles of each material using a powder methodology, has been used to complete the fabrication process. Three factors, including sintering time, sintering temperature, and compacting pressure, are taken into account when fabricating FGM. The FGM …
Published in International Journal of Mechanical Dynamics and Systems Analysis · Vol. 3, Issue 2, 2025 · pp. 1–11 Read article
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Comparative Analysis of Different Mechanical Properties of Banana Pseudostem Fiber and Pineapple Leaf Fiber Reinforced Polymer Composite
Abstract: In this research, a hybrid natural fiber polymer composite is prepared using different combinations of banana pseudostem fiber and pineapple leaf fiber in a discontinuous reinforcement phase and epoxy polymer in a continuous matrix phase. For the preparation of the composite, the hand layup technique is used and important mechanical characteristics, namely tensile, flexural, and impact strength, are determined. The findings of this investigation represent that the highest values of …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1248–1256 Read article
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The theoretical study of behavior of the gas bubble, fixed on the surface of a solid material, under simultaneous changes of the surface tension on the border section of the phases of the fluid-gas and contact angle
Abstract: In the practice of ore and particular coal flotation, the injection of oils (nonpolar reagents) into the flotation pulp intensifies the process of the flotation, separation of the particles of different minerals, and contributes of extraction into the foam product considerably of the larger and heavier particles, no floating before. However, conducted studies to present time do not permit to explain significant strengthening of contact between the bubble and the …
Published in Emerging Trends in Chemical Engineering · Vol. 6, Issue 3, 2019 · pp. 17–28 Read article
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Vapour Phase Hydrogenation of Levulinic Acid Over Carbon Coated HZSM-5 Supported Ni Catalysts
Abstract: Carbon coated HZSM-5 supported Ni catalyst shown to be a promising catalyst in the hydrogenation of levulinic acid to yield γ- valerolactone. Physicochemical characterizations were undertaken using N2 physisorption, H2-chemisorption, X-ray diffraction (XRD), CHNS and temperature programmed reduction (TPR) techniques. The CHNS studies reveal about 3 wt% carbon was coated by the passage of cyclohexene at 600 °C for 3 h. The carbon coated HZSM-5 supported Ni catalyst shown lower …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 2, 2015 · pp. 33–38 Read article
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Comparison of RSM and ANN Modeling Approaches in Predicting the Laser Phase Transformation Hardening Parameters on the Heat Input and Hardened-Bead Profile Quality of Unalloyed Titanium
Abstract: In the present work, laser transformation hardening (LTH) of unalloyed titanium, nearer to ASTM Grade 3 of chemical composition was investigated using CW 2kW, Nd: YAG laser. The laser process variables such as laser power, scanning speed, and focused position play a major role in deciding the laser hardened bead quality. Two methods, Response Surface Methodology (RSM) and Artificial Neural Network (ANN) were used to predict the heat input and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 5, Issue 1, 2015 · pp. 36–59 Read article
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Single-Phase Two-Stage Multi-Level Inverter Employing Low Number of Switching Devices
Abstract: In recent years, multilevel inverter (MLI) plays a significant role in low or medium voltage applications as a result of generating voltage with reduced harmonic contents. This paper proposes a new version of multi-level inverters (MLI) with reduced switching devices along with reduced harmonics content of output voltage, which results in low switching losses compared with conventional MLI topologies. In addition, the proposed inverter provides low total blocked voltage compared …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 2, 2019 · pp. 22–32 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