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218 articles for “frequency measurement”
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Structural, Magnetic and Dielectric Properties of Barium Cobalt Hexaferrite-powder and Barium Cobalt Hexaferrite- Epoxy Resin Composite Film
Abstract: The W-type barium cobalt hexaferrite powder with chemical composition BaCo2Fe16O27 was prepared using a simple heat treatment method. The precursor was calcinated at 650 °C for 3 h in a muffle furnace and then slowly cooled to room temperature in order to obtain barium cobalt hexaferrite powder. The flexible epoxy thin film of Ba-cobalt hexaferrite/epoxy composite was fabricated using the suitable amount of hardener and curing agent. Surface and morphological …
Published in Journal of Microelectronics and Solid State Devices · Vol. 1, Issue 1, 2015 · pp. 14–20 Read article
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Growth, Optical, Mechanical and Electrical Properties of Zinc Sulphate Admixtured N-N’-dimethylurea Single Crystals (DMUZS)
Abstract: AbstractThe single crystals of zinc sulphate admixtured N-N’-dimethylurea (DMUZS) were grown by slow evaporation technique from aqueous solution at room temperature. Good quality crystals of size 16×12×5 mm3 had been obtained after 35 days. The grown crystals were characterized by single crystal XRD analysis to determine the lattice constant of the sample. Powder X-ray diffraction studies confirm the crystalline nature of the grown crystal. Fourier transform infrared (FT-IR) studies were …
Published in Research & Reviews : Journal of Physics · Vol. 7, Issue 1, 2018 · pp. 24–33 Read article
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Measurements and Analysis of Electric Power Quality
Abstract: The ideal supply voltage is pure sinusoidal voltage with nominal frequency and nominal amplitude.Any variation from this is considered as a power quality event or a disturbance. One importantaspect in the field of power quality is monitoring and control of the qualitative parameters of theelectrical energy according to today’s standards. In that way, a big attention is paid to define thedisturbances and determination of procedures for their measurement. A large …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 2, Issue 1, 2014 · pp. 4–11 Read article
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Unraveling Mixed Ionic-Electronic Conduction in Lithium-Substituted Rubidium Tetra Titanates via Dielectric Spectroscopy and EPR Analysis
Abstract: Lithium-substituted Rubidium Tetra Titanates with varying concentrations of lithium carbonate (Li₂CO₃) — specifically 0.01, 0.05, and 0.1 molar percentages — were successfully synthesized using a conventional high-temperature solid-state reaction method. The resulting compounds follow the general chemical formula Rb₂₋ₓLiₓTi₄O₉. X-ray diffraction (XRD) analysis confirmed that lithium ions were successfully incorporated into the crystal lattice without disrupting the fundamental layered structure of the host material. The crystal system remained monoclinic across …
Published in Research & Reviews : Journal of Physics · Vol. 14, Issue 2, 2025 · pp. 19–29 Read article
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Flooding of Urban Drainage Systems: Risk Analysis Study
Abstract: Floods are considered as to be among the most severe natural disasters because of their unpredictability, their overwhelming power and the difficulty to assess the related risks. Consequently, flooding damage is inevitable. This paper focuses on the identification of potential flood hazards in urban drainage systems. The flooding causes and modes are analyzed by two main methods: fault tree and event tree. The frequencies of natural events and operational obstacles …
Published in Journal of Water Resource Engineering and Management · Vol. 6, Issue 3, 2019 · pp. 1–5 Read article
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Analysis of Microstrip H-Shaped Patch Antenna as a Moisture Sensor
Abstract: There are certain advantages of microstrip patch antenna having low cost, low profile antenna. But inspite of that there are certain disadvantages also like low bandwidth, low efficiency, complexity. This paper introduces the potential of the H-shaped microstrip antenna using DGS multiband as a microstrip sensor for bandwidth improvement and developed a relationship between return loss and frequency. This is simulated at CST software and the result was measured on …
Published in Recent Trends in Sensor Research & Technology · Vol. 2, Issue 3, 2015 · pp. 1–8 Read article
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Autonomous Agentic AI for Adaptive Cure Optimization and Defect Prevention in Thermoset Polymer Composite Manufacturing
Abstract: Thermoset polymer composites occupy a central position in modern structural manufacturing, from aircraft fuselages to wind-turbine blades. Despite progress in resin chemistry and fiber architecture, the “cure process” that transforms compliant preforms into load-bearing structures remains difficult to manage. Manufacturers encounter ‘voids’, “interlaminar delaminations”, and “spring-back distortion” when curing complex or thick-section parts. The cause is not ignorance of the relevant physics, but rather that ‘temperature’, ‘chemistry’, ‘rheology’, and ‘mechanics’ …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 301–320 Read article
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Design and Vibrational Analysis of Power Transmission by Stepless Friction Drive
Abstract: The design detailed analysis of vibration of a stepless friction drive-based power transfer mechanism are presented in this work. A load, a stepless friction drive, and a motor make up the system. To assure the system's effectiveness and dependability, the stepless frictionless drive is constructed using a mix of theoretical computations and is examined using an FFT analyzer. The vibrational assessment is carried out to assess how the system reacts …
Published in Journal of Experimental & Applied Mechanics · Vol. 14, Issue 1, 2023 · pp. 41–56 Read article
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USING DIFFERENT END CONDITIONS EXPERIMENTAL AND THEORETICAL ANALYSIS FOR VIBRATIONAL PROPERTIES OF NATURAL FIBER COMPOSITES BEAM
Abstract: The today’s research trend in composite is for the development of composite with natural fibre instead of synthetic fibre. It is because of properties like low cost, light weight, bio-degradability, ease to manufacture and low impact on environment. It becomes necessary to study the vibrational behaviour of composite in addition to mechanical strength and chemical properties for effective utilization in real world applications as they subjected to many types of …
Published in Trends in Machine design · Vol. 5, Issue 2, 2018 · pp. 34–41 Read article
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GSM Based Integrated Control System for Optimal Hazard Management
Abstract: It is no doubt that the lack of adequate control measures to control hazards such as fire outbreaks, flooding and intrusion have continued to undermine production and development in the country and had rendered many people homeless due to the negative effects imposed by these hazards. This work developed a system that provides smart alerts and control responses to emergencies such as fire outbreaks, gas leakage, flooding and intrusion in …
Published in Journal of Microelectronics and Solid State Devices · Vol. 9, Issue 2, 2022 · pp. 29–41 Read article
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Automatic Evaluation of the Thin-film Multijunction TVC Performance in the Highly Accurate AC Voltage Measurements
Abstract: In this paper, The Thin-Film Multijunction Thermal Converter (TFMJTC) is evaluated by comparing its performance with the Single Junction Thermal Converter (SJTC) performance. This comparison is performed automatically by making new LabVIEW programs which are developed especially for this purpose. The performance of the TFMJTC is determined with the help of characteristic tests which are important to each thermal converter (TC) to be determined to put them into consideration during …
Published in Journal of Control & Instrumentation · Vol. 4, Issue 1, 2013 · pp. 1–10 Read article
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A Study to Assess the Satisfaction Level of Children on Parent–Child Relationship Among Adolescent Girls Studying at Selected Educational Institutions in Honavar, Uttara Kannada
Abstract: Background: A strong parent-child relationship (PCR) is essential for a child’s overall development. This study aimed to explore the quality of parent-child relationships, particularly with fathers, among Indian adolescent girls. While societal attitudes have evolved, concerns remained about whether female children receive the same love, respect, and care as their male counterparts. Methodology: This research used a quantitative approach with a descriptive design. A total of 253 adolescent girls from …
Published in International Journal of Women's Health Nursing And Practices · Vol. 1, Issue 2, 2023 · pp. 14–20 Read article
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Electromagnetic Transients and Frequency Characteristics of a Loaded Horizontal Conductor above Lossy Earth
Abstract: This paper addresses the electromagnetic transients and the frequency characteristics of a thin conductor horizontally suspended above lossy earth. The analysis takes into consideration the receiving-end termination and the earth parameters. The effect of the ground return is represented by incorporating the concept of the complex penetration depth in the formulation of the line’s equations in the s-domain. The resulting simultaneous differential equations governing the voltage and current are solved …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 1, 2018 · pp. 29–41 Read article
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An Evaluation of the Effectiveness of a Self-Instructional Module on First Aid and Safety Measures for School Children (Aged 11–14 years) at PDR VVP Vidyalaya, Loni
Abstract: Background: School children are active youngsters. India is home to nearly 500 million young individuals, with approximately 370 million being children under 15 years old, highlighting their crucial role as the future of the country. Young children often exhibit naughty, defiant, and impulsive behavior. According to the World Health Organization’s Global report, in the South-East Asia Region, road traffic accidents, drowning, burns, and other injuries are leading causes of child …
Published in Journal of Nursing Science & Practice · Vol. 15, Issue 1, 2025 · pp. 17–22 Read article
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Split Ring Resonator Based Dual Frequency Microstrip Patch Antenna For Wireless Applications
Abstract: The objective of the work is to design a compact dual frequency microstrip antenna (MSA) at GSM 1800 MHz and ISM (2.4 GHz). The proposed MSA incorporates a rectangular patch with an inverted U slot printed on the top of RT duroid 5880 substrate with thickness of 0.8mm and dielectric constant of 2.2. The dimensions of the patch are optimized as 45x 54 mm2. It is fed by coaxial feeding. …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 1–14 Read article
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The Response of Blood Platelets to the Vibration Sound in Healthy Subjects and Hypertensive, Diabetic Patients: In Vitro Study
Abstract: Vibration-induced changes in the platelets activity as a result of increased share stress. Mean platelet volume (MPV) is a good indicator of platelet activation. This study aimed to study the effect of vibration sounds, evoked by tuning fork, on the MPV of healthy subjects, hypertensive and diabetic patients in vitro study model. Venous blood samples obtained from healthy subjects (n=7), hypertensive (n=7) and diabetic patients (n=7) were exposed to vibration …
Published in Research and Reviews : A Journal of Immunology · Vol. 5, Issue 1, 2015 · pp. 23–28 Read article
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Triboelectric Charge Density Enhancement in Zinc Oxide Decorated Polymer Nanogenerators for Energy Harvesting Systems
Abstract: The growing need for wearable electronics, wireless sensor networks, and IoT devices has pushed research on triboelectric nanogenerator for long-term energy harvesting. However, traditional polymer-based TENGs' low triboelectric charge density restricts their energy conversion efficiency and practical performance. This research presents a zinc oxide (ZnO)-decorated polymer triboelectric nanogenerator designed to enhance surface charge density and improve electrical output. ZnO nanoparticles were synthesized using a hydrothermal method and uniformly deposited onto …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Effect of the Background Harmonics and the Network’s Impedance Characteristics on the Operation of Shunt Capacitors
Abstract: This paper deals with the possible adverse harmonic conditions associated with the connection of shunt compensating capacitors to certain network buses. It takes into account both the daily profile of the voltage background harmonics and the frequency dependence of the network's input impedance at these buses. These two factors will be incorporated in four established standards and recommendations used for assessing the severity of the harmonic pollution in the network. …
Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 1, 2013 · pp. 22–32 Read article
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Performance Analysis & Speed Control of 3 Phase Induction Motor on 8 Bit Controller Platforms Using LabVIEW®
Abstract: ABSTRACTPerformance analysis & speed control of 3 phase induction motor on 8 bit platform using LabVIEW® aims to speed control of 3-phase induction motor, microcontroller used for this work is AVR ATmega16. LabVIEW® provides the remote GUI interface to the system. LabVIEW® interfaces to the control system with the RS-232 communication link Using NI-VISA. Actually induction motor controlling through microcontroller and PC based GUI leads to the almost complete design …
Published in Journal of Computer Technology & Applications · Vol. 1, Issue 1-3, 2011 · pp. 88–99 Read article
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Advanced Fuel Flow Measurement in Aero Engine Using Microcontroller
Abstract: AbstractThe amount of fuel that must flow in an aircraft engine is an important parameter that must be considered while designing the fuel control unit in an aircraft engine. The amount of fuel supplied must be optimised as per the speed requirement of aircraft. The basic aim of this project is to solve the major problem of measurement of fuel flow rate in an aero engine. This project fulfils the …
Published in Journal of Operating Systems Development & Trends · Vol. 6, Issue 2, 2019 · pp. 6–13 Read article