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14 articles for “point defects”
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Flaws and Defects in Crystals
Abstract: Crystalline materials are defined by their long-range atomic order; however, no real crystal is completely free from imperfections. This article provides a comprehensive overview of the various types of crystal defects and imperfections that occur in solid materials and their significant influence on material properties. Point defects, including vacancies, interstitials, and substitutional atoms, are examined alongside line defects such as edge and screw dislocations, as well as planar defects encompassing …
Published in International Journal of Crystalline Materials · Vol. 2, Issue 2, 2025 · pp. 1–15 Read article
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Crystal Defects and Their Characterization in Modern Materials Science
Abstract: The physical and chemical properties of crystalline solids are fundamentally dictated by deviations from structural perfection, known as crystal defects. From the point-scale vacancies that drive diffusion to the planar boundaries that determine mechanical strength, defects serve as the primary "tuning knobs" in material design. This review provides a comprehensive examination of point, line, and planar defects, exploring their formation energetics and their role in plastic deformation via crystallographic slip. …
Published in International Journal of Crystalline Materials · Vol. 3, Issue 1, 2026 · pp. 15–19 Read article
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Transformer Health Monitoring System
Abstract: Rising demands for reliable and efficient power distribution in modern electric control grid increasingly call up for robust monitoring systems for critical substructure. Being a vital part of the power conduction system, transformer are subjected to mechanical, electrical, and environmental stresses, which, if not properly controlled, can cause failures. In this project, we propose a Transformer Health Monitoring System (THMS) using machine learning (ML) models and real-time monitoring method to …
Published in Journal of Power Electronics and Power Systems · Vol. 15, Issue 3, 2025 · pp. 1–9 Read article
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Mandible reconstruction following resection of gingival squamous cell carcinoma with peroneal artery perforator based fibular osteocutaneous free flap
Abstract: Reconstructing soft tissue defect resulting from resection of malignant tumor in face is crucial in esthetic and functional point of view. To address this condition, various surgical flaps are used, including the free vascularized osteocutaneous flap. In this case, we used a free fibular osteocutaneous flap to reconstruct both the bone (osseous) and soft tissue (mucosal) defects. These defects were caused by the removal (resection) of a lesion in a …
Published in Research and Reviews: A Journal of Dentistry · Vol. 16, Issue 2, 2025 · pp. 12–18 Read article
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Management of Kosthasakhashrita Kamala W.S.R. to Hepatocellular Jaundice – A Case Study
Abstract: Kosthasakhāśrit Kamala is a well-recognized clinical entity in Ayurveda and is widely correlated with modern hepatocellular jaundice. The condition arises primarily due to the vitiation of Pitta dosha within the Kostha (gastrointestinal tract), which subsequently spreads to the Sakha (peripheral tissues). Classical texts describe hallmark features such as Haridra Netra (yellowish discoloration of the eyes), yellowish hue of twak and nakha, pitta varṇa of mutra and sakrit (yellow urine and …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 15, Issue 1, 2026 · pp. 1–8 Read article
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Reconstruction of broad soft tissue defect around knee with combined perforator flaps
Abstract: Perforator flaps have been commonly used in reconstruction of soft tissue defects nowadays; however, it is very important to apply them properly according to the characteristics of recipient site. Since there is no universal flap appropriate to various types of defects, there have been a number of research to apply appropriate perforator flaps suitable to recipient sites. Recently, achievements have been made by applying chimeric flaps based on perforators from …
Published in Research and Reviews : Journal of Surgery · Vol. 14, Issue 1, 2025 Read article
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Inverse Model for Predicting Thermal Abnormality of the Transient Process Triggered by Defective Electronics Element
Abstract: The paper presents a model for predicting thermal abnormalities in Printed Circuit Boards (PCBs) by approximating the thermal process of electric elements with heating from point sources. Circuit board heat sources are defined as point and non-point. The point heat source is a small electronic heating element that can be approximated as having originated from one point on the circuit board. A non-point source is one with heat distributed over …
Published in International Journal of Energy and Thermal Applications · Vol. 3, Issue 2, 2025 · pp. 24–31 Read article
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Evaluation of dampness effect on some buildings in Ahmadu Bello University, Zaria, Nigeria
Abstract: Dampness is one of the sources of defect in building. Apart from triggering deterioration of the material and textures, it can also affect in harm to the furnishings and content there by allowing the development of fungi. There are many causes of dampness in building some of which include rain penetration which occurs ingress above the ground at the various points in the external envelope of the construction. i.e through …
Published in Journal of Structural Engineering and Management · Vol. 12, Issue 3, 2025 Read article
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Quantum-Fuzzy Tensor Operators and Uncertainty-Band Bifurcation for Symmetry-Preserving State Discrimination
Abstract: A tensor-operator framework is developed for fuzzy conjunction, fuzzy disjunction, and symmetry-preserving state discrimination in multi-qubit quantum systems. In this formulation, fuzzy membership and non-membership degrees are represented through expectations of effect operators acting on density matrices, providing a natural bridge between fuzzy logic and quantum measurement theory. Conjunction and disjunction operations are extended to the quantum domain via tensorised channels, constructed using projective measurements and unitary transformations, enabling logical …
Published in Emerging Trends in Symmetry · Vol. 2, Issue 1, 2026 · pp. 08–15 Read article
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Multi-Layer Aluminum–Polymer Hybrid Structures for Improved Automotive Impact Performance
Abstract: Layered metal–polymer hybrid laminates have emerged as promising candidates for lightweight automotive structures requiring high impact resistance and structural reliability. In this study, aluminum/glass–epoxy hybrid laminates were fabricated using a symmetric stacking sequence through hot compression molding to evaluate their mechanical and energy absorption performance. Density analysis revealed an average measured density of 2.34 g/cm³, closely matching the theoretical value of 2.36 g/cm³, with a deviation of approximately 1.02%, indicating …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 42–53 Read article
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Progeria Syndrome Unveiled: A Scientific Odyssey into Premature Aging Mechanisms and Therapeutic Frontiers
Abstract: Progeria, or Hutchinson-Gilford Progeria Syndrome (HGPS), is a rare and fatal genetic disorder in childhood, exhibiting features akin to premature aging. Despite normal appearances in infancy, affected children face accelerated aging with distinct facial characteristics, including micrognathia, dental malformations, lower body weight, early hair loss, decreased joint mobility, lipodystrophy, etc. The cause of HGPS is a point mutation that occurs at the exon 11 of the LMNA gene which normally …
Published in Research and Reviews: A Journal of Health Professions · Vol. 14, Issue 2, 2024 · pp. 52–68 Read article
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Evaluating Fiber Volume Fraction and Defects in Fiber Reinforced Polymer Composites for T Joint applications
Abstract: Fiber-reinforced polymer (FRP) composites have been integral to industries such as aviation, aerospace, shipbuilding, and automotive due to their strength, durability, lightweight, and corrosion resistance. This study examines the production and microstructural analysis of polymer composites using FRP and manual lamination methods. While manual lamination is quick and economical, it relies on operator skill, resulting in low mechanical properties. Microstructure analysis via 3D optical and scanning electron microscopes revealed that …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1222–1235 Read article
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An Empirical Analysis of Cost, Time, and Quality Relationships Using Correlation and Regression Techniques
Abstract: Cost, time, and quality have been recognized as the three key dimensions that determine construction project performance and are commonly represented through the "Project Management Triangle." However, despite their theoretical linkage, there is limited empirical evidence to quantify the nature of their relationships, particularly within developing construction markets. This paper seeks to contribute to addressing this shortfall by investigating the specific influence of cost and schedule variations upon quality outcomes …
Published in Journal of Construction Engineering, Technology & Management · Vol. 16, Issue 1, 2026 · pp. 52–60 Read article
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Flexural Response and Numerical simulation of Unidirectional Areca–Pineapple Leaf Fiber Hybrid Epoxy Composites
Abstract: The increasing demand for lightweight and environmentally sustainable materials has accelerated the development of natural fiber-reinforced polymer composites for engineering applications. In the present study, unidirectional areca and pineapple leaf fiber (PALF) reinforced hybrid epoxy composites were fabricated using a simple hand lay-up process. Before fabrication, the fibers were chemically treated to improve fiber–matrix adhesion and enhance the mechanical performance of the laminates. Four different stacking sequences (A8, A7P1, A6P2, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article