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52 articles for “phase shift”
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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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Effect of Annealling on Optical Band Gap of Fe2O3 Thin Films on Amorphos Transparent Glass Substrate by Spray Pyrolysis Method
Abstract: The Fe 2 O 3 thin film has widely used photo-electrochemical cells. In this paper, the optical properties like band gap of thin films is depend on annealed temperature at 100 o C and 200 o C was discussed. The optical property of Fe 2 O 3 are studied by UV- Vis spectroscopy .The optical band gap decreased after increasing annealing temperature. The refractive index of Fe 2 O 3 …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 2, 2023 · pp. 25–29 Read article
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Synthesis of Glass Fiber Reinforced Polymer Composites Incorporating MWCNTS and Graphene: A Study on Dynamic Mechanical Behavior and Cole–Cole Representation
Abstract: Glass fiber reinforced polymer (GFRP) composites were fabricated using multi-walled carbon nanotubes (MWCNTs) and graphene as nanofillers through the hand lay-up technique. Two sets of composites were prepared by incorporating MWCNTs and graphene separately into the epoxy resin matrix at varying weight percentages (2%, 4%, 6%, 8%, and 10%). Mechanical and viscoelastic properties were evaluated following ASTM standards, and Dynamic Mechanical Analysis (DMA) was performed to study their mechanical and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1411–1403 Read article
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A Comparative Study of Zinc Oxide Nano Particles Synthesized by Hydrothermal, Sol-gel and Thermal Decomposition
Abstract: In the proposed work, Zinc oxide nano particles (ZnO NP's) are synthesized using three different methods: Hydrothermal, Sol-gel and Thermal decomposition. The samples are characterized using X- ray diffraction (XRD), UV visible spectroscopy (UV-Vis), Fourier Transform Infrared Spectroscopy (FT-IR) and scanning electron microscopy (SEM). The XRD pattern exhibit single-phase polycrystalline nature of all the samples exhibiting the most intense peak at (101). The diffraction peaks are located at 31.80, 34.46, …
Published in Journal of Polymer & Composites · Vol. 11, Issue 7, 2023 · pp. 39–45 Read article
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Study of Rehydration and Dehydration behavior of Scolecite by insitu Raman spectroscopy
Abstract: The study of structural changes of stretching and bending modes around 3000-4000cm-1 and 700-1800cm-1 in the temperature range of 299 to 503 K during the dehydration of naturally occurring scolecite was investigated using in-situ Raman spectroscopy. A Raman spectrum from 3000-4000cm-1 was measured for a fibrous zeolite called scolecite to regulate the behavior of water molecules in the passages. The extending vibrations of H2O molecules of scolecite are located between …
Published in Journal of Polymer & Composites · Vol. 12, Issue 6, 2024 · pp. 152–159 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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Assessing the Effectiveness of Industrial Energy Audits: A Literature Review
Abstract: Indian economy plans to conserve the energy which is consumed by the industrial sector. Government of India has made it mandatory to conduct periodic energy audits in the industrial sector which is to be followed up with a practical implementation of energy conservation (ECON) measures as suggested by the energy audit team. Energy audit has been conducted in two phases namely, pre-audit and post audit phase. During pre-audit phase, initially, …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 15, Issue 1, 2024 · pp. 1–7 Read article
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Advancements in Thermal Performance of Solar Flat Plate Collectors: A Comprehensive Review
Abstract: Over the past couple of years, solar flat plate collectors (FPSCs) have undergone significant improvement regarding their thermal performance. The review evaluates the improvement of materials such as advanced coatings; metals with a high thermal conductivity; and nanostructured additives. New cover technologies, such as polymeric films and anti-reflection coatings, are discussed, as well as novel insulation technologies such as aerogels and vacuum panels. Also of interest are phase-change materials and …
Published in Journal of Thermal Engineering and Applications · Vol. 12, Issue 2, 2025 · pp. 10–14 Read article
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Post: Review of Punravartak Jwara with Relationship to Recent Surge in Cardiac Death and COVID-19 Infection
Abstract: The unprecedented 12.5% surge of sudden cardiac death has been reported after COVID-19 outbreak. Central health agency has opined that the COVID-19 vaccine has no relationship with this surge; but the sudden cardiac death with shift i.e. the sudden cardiac death of young in their 40 even with cases of sudden cardiac death in the age group of 20–40. This paradigm change in the prevalence is of serious concern as …
Published in Research and Reviews : A Journal of Immunology · Vol. 14, Issue 1, 2024 · pp. 27–31 Read article
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Development of a Polymer-Encapsulated IoT-Based Sensor for Thermal and Electrical Protection of EV Batteries
Abstract: Electric Vehicles (EVs) mark a critical shift toward sustainable transportation, with Battery Management Systems (BMS) playing a vital role in ensuring battery safety, reliability, and efficiency. The proposed BMS in this project incorporates real-time charge monitoring, temperature sensing, and fire detection capabilities to address safety concerns associated with lithium-ion batteries. Key features include current and voltage tracking, State of Charge (SoC) estimation, fault detection, and a user-friendly LCD interface. By …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 582–591 Read article
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Multifunctional Lignin-Modified Jute/Bio-Epoxy Composites with MWCNT-Based Piezoresistive Self-Sensing for Sustainable Housing Applications
Abstract: This study develops a multifunctional natural-fibre-reinforced polymer composite based on alkali-treated jute fabric, bio-based epoxy, kraft lignin and a small amount of multiwalled carbon nanotubes (MWCNTs), with particular emphasis on polymer-matrix modification, fibre–matrix interfacial behaviour and intrinsic damage sensing. Kraft lignin was incorporated at 0, 2, 4 and 6 wt.% to examine its influence on polymer-chain mobility, interfacial morphology, thermal stability and mechanical response, while 0.5 wt.% MWCNTs was introduced …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Effectiveness of Soya Bean Intake on Reducing Menopausal Symptoms Among the Menopause Women
Abstract: Background: Menopause represents a natural phase in a woman’s life, signifying the end of her reproductive years and typically occurring as part of the aging process. While some women navigate this transition smoothly, others may experience challenging or severe symptoms. Study Objective: The purpose of this research was to assess the impact of soybean consumption in reducing menopausal symptoms. A total of 60 menopausal women from the gynecology outpatient department …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 14, Issue 3, 2024 · pp. 93–105 Read article