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492 articles for “AST”
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Crossroads of Ecology and Medicine: Evaluating Pollutant-Induced Risks to Biodiversity and Human Health
Abstract: Environmental pollution has emerged as a central challenge at the crossroads of ecology and human medicine. The rapid pace of industrialization, urbanization, and agricultural intensification has led to an unprecedented release of pollutants into the air, water, and soil—triggering cascading effects on ecosystems and human health. Pollutants such as particulate matter, heavy metals, pesticides, microplastics, endocrine-disrupting chemicals, and persistent organic pollutants not only degrade biodiversity but also exert multifaceted health …
Published in International Journal of Environmental Noise and Pollution Control · Vol. 3, Issue 1, 2025 · pp. 41–53 Read article
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Mechanical Property Assessment of Hybrid Composite Laminates Composed of Jute Glass Fibers in Combination with Flax, Hemp, Sisal and Kenaf Fibers Using the Hand Layup Technique
Abstract: The present work compares the properties of various hybrid composite laminates manufactured using the hand layup technique and addresses their production process, based on glass fiber as the exterior layer and natural fibers (flax, hemp, kenaf, jute, and sisal) as interior layers, in an epoxy resin. Five stacking sequences A-GJJJJG, B-GFJJFG, C-GHJJHG, D-GKJJKG, and E-GJSSJG were used to prepare the test specimens. According to ASTM guidelines, experiments were performed to …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 103–113 Read article
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Chronic Obstructive Pulmonary Disease (COPD) in Younger Adults: Challenges and Considerations – A Review
Abstract: Chronic Obstructive Pulmonary Disease (COPD) phenomenon rapidly converting into chronic significant health issues for many young adults. A disease calculated for older age gives way to early-onset COPD, which creates new issues for diagnosing and treating the illness and even interacts with the quality of life. The article reviews the epidemiology, risk factors, pathophysiology, clinical presentation, and treatment considerations related to this set of conditions. From those risk factors, early-onset …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 15, Issue 3, 2025 · pp. 08–19 Read article
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Machine Learning-Assisted Design and Optimization of Lightweight Polymer Composites for IoT-Enabled Automotive Applications
Abstract: This study aims to develop an integrated machine learning and optimization framework for the intelligent design of lightweight polymer composites suited for IoT-enabled automotive applications. The goal is to enhance material performance while satisfying multiple design constraints such as mechanical strength, thermal stability, and process compatibility. A curated dataset of polymer composite formulations was used to train a Random Forest Regression (RFR) model capable of predicting tensile strength, thermal conductivity, …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 12–27 Read article
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IoT Sensors to Monitor Pipeline Pressure and Flow Rate Combined with ML-Algorithms to Detect Leakages
Abstract: In the field of fluid mechanics, pipelines are the lifeblood of industries, transporting everything from natural gas and oil to water and chemicals. Maintaining their integrity is paramount for safety, economic efficiency, and environmental protection. Traditional leak detection methods explained in fluid mechanics can be slow, expensive, and sometimes fail to identify small leaks early enough to prevent significant damage. However, the convergence of Internet of Things (IoT) and Machine …
Published in Recent Trends in Fluid Mechanics · Vol. 12, Issue 2, 2025 · pp. 40–48 Read article
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Mechanical Analysis and Advanced Manufacturing of Eco-Friendly Groundnut Shell Powder Reinforced Epoxy Composites
Abstract: Polymer composites reinforced with natural materials are gaining significant attention because of their eco-friendly nature, cost-effectiveness, and favorable mechanical properties. This research explores the creation and mechanical analysis of epoxy composites strengthened with groundnut shell powder (GSP), exploring both untreated and benzoyl chloride-treated GSP variations. The research emphasizes utilizing agricultural waste material while achieving enhanced mechanical properties through surface modification and advanced fabrication techniques. The composites were manufactured using the …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 174–185 Read article
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Exploring the Mechanical Characterization and Microstructural Properties of the Varying Weight % of Nano Boron Carbide (nB4C) Reinforced Al2024 composites using the Vacuum-Assisted Stir Casting Method
Abstract: In this investigation the stir casting technique is utilized to fabricate Al2024-B4C nano composites. The nanoB4C particles used in the reinforcement material have a particle size of 50 nm and variable weight percentages. In Al2024 composites, boron carbide reinforcement is included at weight percentages ranging from 0% to 3%, with a 1% interval between each percentage addition. Following the casting process, the samples were prepared for microstructural and mechanical evaluation …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 394–404 Read article
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Mechanical Characteristic Analysis of Five-Layer Carbon-Carbon Composite Material
Abstract: The current study investigates the fabrication and mechanical strength of five-layer carbon-carbon composite. The strong five-layer carbon-carbon composite material with high strength and modulus is made of a raw material called precursors. The polyacrylonitrile (PAN) method is used in the fabrication of carbon fiber. The characteristics of the resulting carbon material depend on the composition and structure of the precursor. A sheet of 50 x 40 cm five-layer carbon-carbon composite …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 405–417 Read article
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Experimentation and Investigation of E - Glass Fibre/ Polyester Composites Laminates
Abstract: This paper centres on the autoclave moulding technique, offering a comprehensive analysis of the specimen fabrication process. The advanced composite manufacturing process involves the use of high temperatures and pressures during the curing step. This results in composite specimens that have a higher density and are devoid of any voids. Polyester, E-glass fibre, and SiC powder are the material components that make up the composite in this study. It is …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 477–487 Read article
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Experimental Analysis of Mechanical Characteristics of Aluminium Matrix Hybrid Composite Using Seashell Powder And Coconut Shell Powder
Abstract: The purpose of this study is to investigate the manufacturing processes and mechanical properties of composites made of marine shell powder, coconut shell powder, and aluminium. In our project, the MMC was made of aluminium with seashell powder and aluminium with coconut shell powder. A stir casting process fabricated the Composite. The composition of aluminium, seashell powder and coconut shell powder varies. According to the criteria established by the American …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 487–494 Read article
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Post Halela Zard (Terminalia chebula Retz.): A Review on Medicinal Utility from the Perspective of Unani Medicine
Abstract: Halela Zard (Terminalia chebula Retz.), commonly known as Haritaki in Sanskrit and Chebulic Myrobalan in English, is a cornerstone of Unani pharmacotherapy due to its remarkable therapeutic versatility. The dried pericarp of its fruit has been extensively employed in traditional medicine for the treatment of a wide spectrum of ailments, ranging from digestive disturbances to chronic systemic disorders. This review aims to present a comprehensive overview of Halela Zard by …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 14, Issue 3, 2025 · pp. 19–26 Read article
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Preliminary Survey & Documentation of Wetland Macrophyte Diversity from Chargaon Lake in Warora Taluka, Dist. Chandrapur Maharashtra, India
Abstract: Wetland macrophytes are most diverse group of aquatic macroscopic Angiosperms that has great ecological influence on wetland ecosystem, plays significant role in every food chain operated in aquatic ecosystem. Present study site has a total catchment area of 14.83 thousand hectors constructed in the year 1983 mainly for irrigation practices to nearby villages. The aim of present study is to conduct preliminary survey followed by proper documentation of floral diversity …
Published in Research & Reviews : Journal of Botany · Vol. 15, Issue 1, 2026 · pp. 1–7 Read article
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A Comprehensive Review of Nutritional Supplements
Abstract: The role of nutrition and nutraceuticals in human health and disease, covering macronutrients, micronutrients, organic acids, trace and macro minerals, vitamins, and bioactive compounds. It outlines biochemical structures, dietary sources, metabolism, physiological functions, and deficiency states of carbohydrates, proteins and amino acids, and fats. Key organic acids, choline, and taurine are described for their metabolic and digestive roles. The document evaluates dietary supplements, functional foods, nutraceuticals, designer foods, and medicinal …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 17, Issue 1, 2026 · pp. 40–81 Read article
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Overview of the Relationship of Chemical Behavior to Electron Structure of Group VII Elements in the Periodic Table
Abstract: This article examines the intriguing relationship between the chemical properties and electron configurations of Group VII elements, known as halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At), which are located in the periodic table. These elements possess a common electron arrangement characterized by seven electrons in their outermost energy level. This shared arrangement is fundamental to their unique reactivity patterns. As one moves down the group, …
Published in Emerging Trends in Chemical Engineering · Vol. 12, Issue 2, 2025 · pp. 43–58 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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Energy Time Scale Theory
Abstract: Time is the scale for the measurement of the various activities happening in the whole universe. Therefore, it also can be commented that, "Time is the scale for the measurement of the rate of the change of the energy from one form to another into its various states. That means the range of the various states of the energy starts from string and waves and reaches up to quantum particles, …
Published in International Journal of Universe · Vol. 1, Issue 2, 2025 · pp. 01–07 Read article
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The Role of Breastfeeding in Early Childhood and Maternal Health: A Perspective
Abstract: Breastfeeding is globally recognized as the optimal method of infant feeding, offering unparalleled benefits for both child survival and maternal health. Breast milk provides a balanced mix of essential nutrients, bioactive compounds, and protective antibodies, making it the gold standard for early nutrition. Exclusive breastfeeding for the first six months of life, followed by continued breastfeeding with complementary foods for up to two years or longer, is recommended by the …
Published in Research and Reviews : Journal of Dairy Science and Technology · Vol. 14, Issue 3, 2025 · pp. 43–47 Read article
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A Study on Insect Journey using Sensor
Abstract: The orthodox entomologist’s toolkit – the net, the vial, the killing jar – has long rendered its subject’s mute. We have cataloged insects by their form, their pinned and static beauty, but have been largely deaf to the living, breathing reality of their existence. This study proposes a paradigm shift: to listen. By deploying a suite of miniaturized, non-invasive sensors – from accelerometers that trace the micro-vibrations of a beetle’s …
Published in International Journal of Insects · Vol. 2, Issue 2, 2025 · pp. 01–05 Read article
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Speech and Swallowing Impairments in Herpes Zoster: A Case Report
Abstract: Herpes zoster (HZ), caused by reactivation of varicella-zoster virus, can extend beyond dermatological manifestations to involve cranial nerves, resulting in complex speech and swallowing deficits. This case report presents a 54-year-old male with herpes zoster–related cranial neuropathy, who developed unilateral vocal fold paralysis, dysphonia, and dysphagia. Comprehensive assessment included perceptual, acoustic, endoscopic, and patient-reported outcome measures. Perceptual voice evaluation revealed severe dysphonia with breathiness, asthenia, strain, and reduced loudness, confirmed …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 14, Issue 3, 2024 Read article
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Enhancement of Mechanical Properties in Hemp Fiber-Reinforced Epoxy Composites Using Graphene Nanoplatelets
Abstract: This study investigates how incorporating graphene nanoplatelets (GNPs) influences the mechanical performance of hemp fiber–reinforced epoxy composites. Hemp fibers were chemically treated by alkali treatment to improve fiber–matrix adhesion owing to their high specific strength, stiffness, renewability, and environmental friendliness. Graphene nanoplatelets were dispersed in acetone by probe sonication and added to acetone epoxy matrix at a concentration of 0.5 wt% and 1.0 wt%, respectively. Composite laminates were prepared by …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 98–109 Read article