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1119 articles for “Performance characterization”
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Thermal Performance Analysis and Optimization of Pin-Fin Heat Sink Using CFD, Taguchi Method, and Machine Learning
Abstract: Efficient thermal management is essential for improving the performance and reliability of modern engineering systems and electronic devices. This study presents the design, simulation, and optimization of a pin-fin heat sink using SolidWorks for three-dimensional modeling and ANSYS for thermal and computational fluid dynamics (CFD) analysis. Four different pin-fin geometries, namely square, pentagon, octagon, and circular fins, are considered to evaluate their thermal performance under varying operating conditions. Aluminum is …
Published in Trends in Mechanical Engineering & Technology · Vol. 16, Issue 2, 2026 · pp. 8–20 Read article
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Immunologic Characteristics of Apparently Healthy Nigerians Exhibiting Abnormal SPE: A Preliminary Study
Abstract: Abnormal serum protein electrophoresis patterns have been discovered in apparently healthy Africans in Britain and Ghanaians living in Accra, Ghana. Conflicting reasons were suggested for this phenomenon. The aim of present study was to determine the prevalence and characteristics of serum protein electrophoresis (SPE) abnormalities in apparently healthy Nigerians living in Ogbomoso. Three hundred (300) apparently healthy subjects aged 20–30 years were selected for the study. SPE was performed on …
Published in Research and Reviews : A Journal of Immunology · Vol. 5, Issue 3, 2015 · pp. 1–6 Read article
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Fabrication of Natural Fibre Reinforced Polymer Composite by Hand Lay-Up Process
Abstract: The recent development in technologies has increased the usage of non-renewable resources during pro- duction due to remarkable properties. However, it has been a threat and unable to be replenished once used. In addition to this, natural fibre strengthens in a more significant way and it’s widely applicable in polymer composites materials. Furthermore, the use of plant fibres in polymer composites is due to its low cost and significant properties. …
Published in International Journal of Mechanical Dynamics and Systems Analysis · Vol. 3, Issue 1, 2025 · pp. 13–19 Read article
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Assessment of Matrix Cracking and Fiber Breakage in Hybrid Composite Materials.
Abstract: Hybrid composite materials, combining two or more distinct fiber or matrix constituents, have emerged as advanced structural solutions for aerospace, automotive, marine, and civil engineering applications. However, their complex microstructure makes them susceptible to multiple interacting damage mechanisms, particularly matrix cracking and fiber breakage. This study provides a comprehensive assessment of these damage modes, emphasizing their initiation, evolution, and combined effects on the mechanical integrity of hybrid composites. Matrix cracking …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 3, Issue 2, 2025 · pp. 1–5 Read article
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Model based Tuning of PID Controller
Abstract: In this paper PID controller with Internal Model Control tuning method (IMC-PID) is presented for robust operation. The implementation of IMC is simplified in large class of industrial applications as the process dynamics can be adequately characterized by a First Order plus Delay Time (FOPDT) model. Tuning of the controller is easily done by adjusting the filter time constant which provides improved performance and robustness of the closed loop system. …
Published in Journal of Control & Instrumentation · Vol. 4, Issue 1, 2013 · pp. 16–22 Read article
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Investigation on Open Loop Position Control of Amplified Piezoactuator
Abstract: Amplified piezoelectric actuators (APAs) consist of stacked piezoelectric actuators inside a flexural mechanical amplifier which helps in amplifying the displacements of the piezostacks in static and dynamic conditions. Accounting for their precision movement and dynamic characteristics, these actuators are extensively used in micropositioning, active damping, and microactuation applications. In this paper, FEM analysis of mechanical flexural amplifier of APA230L piezoactuator was performed to estimate its stiffness in the horizontal direction …
Published in Journal of Mechatronics and Automation · Vol. 2, Issue 1, 2015 · pp. 16–24 Read article
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A Cyclic Injection of High Temperature N2-foam in Fuyv Reservoir
Abstract: Steam stimulation has already been proved as an important thermal recovery technology. In Daqing, the development and management of high-heterogeneous heavy oil reservoirs plays an important role in stabilizing the oil output. To combine the good features of steam injection and cyclic injection, a cyclic steam flooding has been conducted in the Fuyv reservoir, Daqing. This paper is to present a detailed process of the cyclic-steam injection. The target Fuyv …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 2, 2013 · pp. 1–12 Read article
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Modeling and Simulation of ZnO/Si Hetreojunction Photodetector for Optical Communication
Abstract: AbstractIn this work, we present numerical simulation and modeling of ZnO/Si Heterojunction photodetectors. We analyze the performance of ZnO/Si Heterojunction photodetectors using commercial device simulation software ATLAS from Silvaco international. Device structure has been created using ATLAS and its electrical and optical characteristics has been simulated using ATLAS. Main figure of merits like dark current, photocurrent, spectral response and quantum efficiency has been extracted.Keywords: ZnO/Si, Heterojunction Photodetector, Silvaco Deckbuild software, …
Published in Trends in Opto-electro & Optical Communication · Vol. 9, Issue 3, 2019 · pp. 19–27 Read article
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Design and Performance Analysis of an UWB Wearable Patch Antenna for WBAN Applications
Abstract: In this paper we represent an ultra-wide band wearable textile antenna for body area network. The proposed antenna consists of a decagonal radiating patch and a partial ground plane with a square slot. For textile antenna, the textile materials and the planer shapes provide a smooth integration into clothing while preserving the characteristic properties of the textile. The ultra-wide band for these types of antenna is achieved by optimizing the …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 3, 2017 · pp. 1–7 Read article
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Analyzing the Role of Fiber Composition in Drying Behavior: A Comparative and Predictive Approach
Abstract: This research presents a comprehensive analysis of the drying behavior and thermal response of three distinct fabric types: 100% Cotton, 100% Polyester, and a Polyester blend (65/35), under meticulously controlled environmental conditions. The Polyester blend (65/35) consists of 65% Polyester and 35% Cotton, combining characteristics of both fibers. The investigation focuses on understanding how fiber composition impacts drying time, moisture retention, and thermal characteristics. Experimental trials were conducted using standardized …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 1–11 Read article
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Performance analysis of Butanol and Waste Cooking Oil bio-diesels in VCR diesel engine
Abstract: Global energy crisis is the key reason for switching to alternate fuels without compromising with environmental standards. This paper focuses on assessing the performance parameters viz. brake thermal efficiency (BTE), brake specific fuel consumption (BSFC), air/fuel ratio and torque against gradually increasing load (0-4 kg) for waste cooking oil (WCO) biodiesel, butanol biodiesel and neat diesel in a variable compression ratio engine. Three different blends of WCO and butanol, separately, …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 3, 2018 · pp. 113–117 Read article
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Development and Fabrication of Biohydrogel for Targeted Delivery of Delafloxacin for Bacterial Skin Infections
Abstract: The escalating challenge of bacterial resistance necessitates innovative drug delivery systems to enhance the efficacy of antibiotics. This study focuses on the development and optimization of a biohydrogel formulation for the targeted delivery of Delafloxacin, aiming to improve its therapeutic outcomes against resistant bacterial strains. Utilizing a 3² factorial design, biohydrogel formulations incorporating Poly(N-isopropylacrylamide) (PNIPAM) and Genipin were synthesized. The optimization process was guided by Design Expert software, focusing on …
Published in Research & Reviews: A Journal of Drug Design & Discovery Read article
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Design And Analysis of Carbon Filler Reinforced Composite Small Wind Turbine Blades
Abstract: Although wind turbines have great potential for capturing wind energy, their blades suffer from unstable aerodynamic loads as a result of operating for extended time in challenging conditions. Both structural and aerodynamic performance are negatively impacted by these loads. The effectiveness of the wind turbine and the use of wind energy are significantly impacted by the choice airfoil. Commonly used airfoils include NACA 4412, NACA 23012, and SG6043. The lift …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 79–89 Read article
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Seismic Response Characterization of Vertically Irregular Multi-Storey Buildings Incorporating Mass and Stiffness Variations Using E-TABS Software
Abstract: The increasing demand for innovative architectural designs has led to the widespread use of vertically irregular configurations in high-rise reinforced concrete (RC) buildings. However, such irregularities significantly influence structural performance under seismic loading conditions, leading to complex structural behaviour and stress concentration at specific levels This study focuses on evaluating the seismic behaviour of vertically irregular multi-storey buildings using nonlinear time history analysis, which provides a realistic representation of structural …
Published in Recent Trends in Civil Engineering & Technology · Vol. 16, Issue 3, 2026 Read article
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Impact of Sol–Gel Processing on Dielectric and Energy Storage Properties of BaTiO3 Nanoceramics
Abstract: Barium titanate (BaTiO3) is a widely studied ferroelectric material because of its high dielectric permittivity and strong potential for electrostatic energy storage applications. In this study, BaTiO3 nanoceramics were synthesized using a controlled sol–gel processing route to investigate the influence of synthesis conditions on their dielectric relaxation and energy storage performance. The synthesized powders were calcined and subsequently sintered at temperatures ranging from 1100°C to 1300°C. Structural analysis using X-ray …
Published in Research & Reviews : Journal of Physics · Vol. 15, Issue 2, 2026 · pp. 11–25 Read article
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EXPERIMENTAL STUDY ON REPLACEMENT OF CEMENT AND FINE AGGREGATE WITH MARBLE DUST AND COPPER SLAG
Abstract: With the ever-growing challenge of managing escalating waste materials globally, this paper explores sustainable solutions in construction through the utilization of marble dust and copper slag. The rapid generation of waste poses severe environmental and health threats, necessitating innovative strategies for responsible waste management. Local availability and the potential to enhance concrete strength make marble dust and copper slag attractive candidates for the partial replacement of cement and fine aggregate. …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 169–176 Read article
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UV Method of Development and Validation of Olaparib
Abstract: An analytical method must be developed and validated in the discovery, development, and production of pharmaceuticals to ensure the identification, purity, potency, and performance of drug commodities. Quality control laboratories use official test protocols that emerge from the processes. A simple ultraviolet spectrophotometric approach was designed and validated using various characteristics, including linearity. Precision, reproducibility, accuracy, robustness, ruggedness, limit of detection, and limit of quantification are among the measuring criteria. …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 15, Issue 2, 2024 · pp. 20–27 Read article
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Enhancing Concrete Durability and Mechanical Properties for Pavement Quality Concrete (PQC) Roads Using Basalt Fiber Reinforcement
Abstract: Concrete, by nature, is brittle and has a very low tensile capacity, which is a double whammy in transportation infrastructure, such as pavement quality concrete (PQC), for roadways, where we need durability and strength. One such method is the use of basalt fibre, as it is a much better way of enhancing the road runway way performance of concrete. This research studies the impact of the addition of basalt fibres …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 266–280 Read article
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Optimization of Process Parameter in 3D Printing to Minimize Wear Loss and increase Tensile Strength
Abstract: Additive Manufacturing (AM) and especially Fused Deposition Modeling (FDM) has emerged as a very versatile process of manufacturing polymer components with complex and highly-integrated geometries. Polylactic Acid (PLA) is a favorite of the many thermoplastic FDM materials because of its biodegradability, easy processing and predictable mechanical properties. The study aimed at maximizing critical parameters in FDM process in order to reduce wear loss and also increase tensile strength of PLA …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 849–858 Read article
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Modeling Pedestrian Walking and Crossing Characteristics at Nasiriya CBD
Abstract: To empower and support walking, comprehension of pedestrian and development of safe facilities for walking is essential. This work examines the factors which influence walking and crossing speed. The variations in walking speed of pedestrians are modeled and related to pedestrian characteristics such as gender, age group, and clothing traditions. On the other hand, the crossing speed of pedestrians was detected, and modeled. The counts of pedestrians were performed using …
Published in Trends in Transport Engineering and Applications · Vol. 5, Issue 3, 2018 · pp. 8–17 Read article