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74 articles for “pH gradient”
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Methods for Removal of Rotenone from Brebra (Millettia ferruginea) Seed, Oil and Defatted Flour under Different Treatment Conditions
Abstract: The main objective was to develop and determine the rotenone removal methods from different samples of defatted flour and refined oil. To remove rotenone, ethanol, pH gradient treatment, cooking and roasting were used and rotenone was determined by HPLC analysis. Most of the rotenone (0.701%) from non-defatted flour is lost during defatting (0.37%) and refinery process of oil (0.02%). From raw seed, 84.1, 85.1 and 97.3% rotenone was removed by …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 3, Issue 3, 2013 · pp. 5–11 Read article
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Dissipative Particle Dynamics Simulation Study on the Evolution of Photoinitiated Free Radical Polymerization Crosslinked Networks
Abstract: Gradient polymer materials overcome the limitations of conventional homogeneous polymers by integrating multiple distinct functionalities within a single continuous structure. Although photoinitiated free-radical polymerization offers excellent spatial and temporal control, the underlying microscopic mechanisms governing network evolution under non-uniform light fields remain poorly understood. In this study, a mesoscale dissipative particle dynamics (DPD) model was successfully developed to couple free-radical polymerization kinetics—including initiation, propagation, crosslinking, and termination—with exponential light attenuation …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 142–158 Read article
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Development and Validation of a Gradient RP-HPLC Method for Quantitative Determination of Potential Manufacturing Impurities in New Drug Apronalide and Pharmaceutical Formulations
Abstract: Three impurities in apronalide drug substance were detected and quantified using a simple isocratic reverse phase HPLC method. The chromatographic separation was achieved on a Thermo Hypersil gold-CN, 100 A0 5 µm, and 250X4.6 mm using a mobile phase consisting of phosphate buffer (pH-4.6) - Methanol with UV detection at 210 nm and flow rate of 0.8 ml/min. The column temperature was maintained at 250C throughout the analysis. This method …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 1, Issue 1, 2014 · pp. 1–10 Read article
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Flame Phenomenology for Premixed Methane and Propane/Air in Developed Meso-scale Channels at Ambient Conditions
Abstract: This paper reports the development of a meso-scale channel for propagation of methane and propane-air mixtures at low Reynolds number. An experiment was conducted in 3, 4 and 5 mm internal quartz tube diameters at premixed conditions of the fuel/air. The tubes were vertically mounted and sometimes preheated uniformly laterally. Uniformly laterally heating gives a zero temperature gradient. Flame phenomenology at different equivalence ratios (φ) of the mixture was discussed. …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 1, 2014 · pp. 13–21 Read article
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Marine Microbial Ecology: A Comprehensive Review of Interactions, Symbiosis, and Bioprospecting.
Abstract: Marine microorganisms constitute the largest and most dynamic fraction of Earth's biodiversity, governing vital ecosystem functions ranging from global biogeochemical cycling to host-specific symbiotic associations. This review provides a comprehensive synthesis of the complex interaction networks within marine microbial communities. We first explore the theoretical foundations of microbial niche construction and evolutionary dynamics in the ocean. Subsequent sections dissect micro-scale interactions within the phycosphere, where chemical gradients dictate cross-kingdom mutualisms …
Published in International Journal of Marine Life · Vol. 3, Issue 1, 2026 · pp. 6–16 Read article
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A Review on Advancements and Challenges of Catalytic and Non-Catalytic Waste Water Treatment Processes
Abstract: AbstractClean drinking water is a basic amenity to be ensured for all. As water resources are becoming increasingly scarce due to the rising imbalance between freshwater availability and consumption and many of the water resources are polluted by anthropogenic sources such as industrial, agricultural waste and household, therefore, treatment of wastewater remains a critical need before leaving it to natural water streams. Traditional wastewater treatment processes include filtration, adsorption, activated …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 1, 2019 · pp. 24–36 Read article
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Ants in Ecosystems and Agriculture: A Comprehensive Review
Abstract: Nearly 60% of the world’s habitats are underutilized. And current agricultural practices are blamed for contributing to soil carbon depletion and biodiversity loss. Climate change, habitat fragmentation, and other challenges hinder species development, leading to projected shifts in species distribution. This calls for alternative management strategies. The organizational structure of social insects, especially ants, offers a model for improved ants account for half of all insect biomass. It plays an …
Published in International Journal of Insects · Vol. 1, Issue 2, 2024 · pp. 15–22 Read article
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Phase – Field Modeling of Brittle and Ductile Fracture Under Complex Loading Conditions
Abstract: Phase-field modeling has emerged as a powerful computational framework for predicting fracture behavior in engineering materials, offering a unified description of crack initiation, propagation, branching, and coalescence without the need for explicit crack tracking. This study presents an in-depth examination of phase-field modeling applied to both brittle and ductile fracture under complex loading conditions, including multiaxial stress states, cyclic loading, thermal gradients, and dynamic impact. The phase-field approach regularizes the …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 3, Issue 2, 2025 · pp. 13–18 Read article
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Distribution, Species Morphology, Phenotypic Variability and Phenology of Epilobium hirsutum L.: A Comparative Study
Abstract: AbstractThe species is distributed along an altitudinal range of 1500–2700m asl. Significant variability in phenotypic traits was observed within and across different populations. A considerable trend of decreasing phenotypic characteristics was observed with decrease in altitudinal gradient. The plants in transplanted site (KUBG) diverge in various traits and timing of phenophases from other three natural populations through Chadoora, Shopian and Shalimar. The plant height decreases with decrease in altitude and …
Published in Research & Reviews : Journal of Ecology · Vol. 6, Issue 2, 2017 · pp. 23–27 Read article
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Development and Thermal-Soiling Performance Evaluation of Boron-Nitride Reinforced Polymer Nanocomposite Coatings for Solar Photovoltaic Applications
Abstract: Surface heating, dust buildup, and weakening triggered by ultraviolet (UV) light all have a vast effect on the long-term performance of solar photovoltaic (PV) modules. These issues all lower power conversion efficiency in real-world open-air circumstances. A nanocomposite coating built on fluoropolymer (FEP) that is reinforced with hexagonal boron nitride (h-BN) nanoparticles is invented by this study to enhance thermal dissipation, optical transmission, and resistance to dirt at the same …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 218–223 Read article
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AI-Designed Functionally Graded Polymer Composites for Multifunctional Thin Films
Abstract: The design of multifunctional polymer composite thin films requires simultaneous optimization of mechanical, optical, barrier, and thermal properties—objectives often in conflict when using conventional homogeneous materials. This study presents an artificial intelligence-driven framework for designing functionally graded material (FGM) architectures in polymer nanocomposite thin films. We integrated machine learning with physics-based modeling to optimize compositional gradients across film thickness, achieving superior performance compared to homogeneous and discrete multilayer alternatives. A …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1026–1041 Read article
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Pressure-Dependent Structural and Optical Properties of CdSe
Abstract: AbstractThe structural and optical properties of Cadmium Selenide (CdSe) compound is investigated in zinc blende phases under 0–30 GPa pressure using Density Functional Theory (DFT) with generalized gradient approximation (GGA) functional embodied in Wien2k code. At zero pressure, lattice constant and bulk modulus are found to be in good agreement with experimental and other theoretical works. Other than zero pressure, there is reduction in volume of unit cell according to …
Published in Research & Reviews : Journal of Physics · Vol. 5, Issue 1, 2016 · pp. 1–5 Read article
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Seasonal Changes in Abundance and Distribution of the Soil Litter Micro-arthropods in a Tropical Forest, with Special Reference to Collembola
Abstract: The population study was made on the basis of comparison of seasonal changes of Collembola in relation with the gradient of edaphic factors which include moisture, temperature, pH, organic carbon, inorganic nitrogen, phosphorus, sodium and potassium contents of a tropical forest, in West Bengal, India. The variations in abundances have significant values during the study period. The higher numbers of insects were collected in December and July. This was in …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 8, Issue 3, 2018 · pp. 6–14 Read article
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SIMULATION OF COLD DIE COMPACTION ALUMINA POWDER
Abstract: Compaction process was analyzed mathematically by predicting a steady-state mathematical model in order to give more description and understanding for the mechanism of this process. Numerical investigation has been carried out on axisymmetric cylindrical parts using the finite difference method with relaxation technique to examine the physical significance of constitutive model to produce the pressure gradients during compaction. The pressure distribution model is then typically coupled with empirical functions relating …
Published in Trends in Mechanical Engineering & Technology · Vol. 1, Issue 1, 2011 Read article
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Intelligent Polymer-Integrated Wearable Platforms for Sustainable IoT and Predictive Health Monitoring for Migraine Detection
Abstract: Migraine is a neurological disorder, and its effect on the global workforce is resultantly significant. However, the fact of the matter is the absence of notable technological breakthroughs and the fact that the technology presently available is reactive, meaning it tackles the symptoms of the attack after the attack has occurred. The requirement for this paper is, therefore, the provision of an innovative approach, and this paper will describe the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 946–960 Read article
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Detection of Phished URLs Using Machine Learning
Abstract: Phishing attacks remain a significant cybersecurity challenge, requiring innovative detection strategies. This study investigates the use of machine learning to detect phishing URLs, to improve the accuracy and reliability of detection systems. Utilizing a diverse dataset of legitimate and phishing URLs we extracted the features such as lexical properties, domain-specific details, and HTML content to train various machine learning models. Algorithms including Random Forest, support vector machine (SVM), and gradient …
Published in Journal of Web Engineering & Technology · Vol. 11, Issue 3, 2024 · pp. 1–7 Read article
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Stability Indicating HPLC Method for Drugs Indicated for Helicobacter Pylori-associated Ulcers
Abstract: Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Triple therapy regimen that comprises a proton pump inhibitor likes Omeprazole, antibiotics like Doxycycline and Tinidazole can be used for treatment of peptic ulceration which is caused by H. pylori. A validated HPLC method was developed as a stability-indicating HPLC method for these drugs and its impurities. New method overcame interference between Doxycycline and its epimer on achiral column by using …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 6, Issue 1, 2015 · pp. 28–46 Read article
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Data-Driven Digital Twin Model for Real-Time Strength Estimation in Polymeric Materials
Abstract: The real-time prediction of mechanical properties in polymeric materials is essential for ensuring quality, consistency, and operational efficiency in modern manufacturing systems. As industrial processes become increasingly complex, traditional trial-and-error approaches to material characterization are no longer sufficient to meet the demands of high-throughput production environments. This study introduces a digital twin-integrated machine learning approach for the real-time estimation of tensile strength in polymeric materials by combining simulation-driven insights with …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 246–257 Read article
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A Review: The Design of Photovoltaic Thermal Technology with Compound Parabolic Concentrator
Abstract: In this paper, photovoltaic cell with compound parabolic solar concentrator has been studied. The interior surface is covered with the reflector. The use of photovoltaic thermal system in combination with concentrating reflectors has a potential to significantly increase power production from a given solar cell area. The absorber of the combined photovoltaic/thermal (PV/T) collector under investigation consists of a module of solar cells for generating electricity, compound parabolic concentrator (CPC) …
Published in Journal of Thermal Engineering and Applications · Vol. 3, Issue 2, 2016 · pp. 38–45 Read article
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Development and Validation of a Robust RP-HPLC Method for Rufinamide Quantification in Pharmaceutical Dosage Form
Abstract: The creation and validation of a simple, precise, and targeted reverse phase high-performance liquid chromatographic (RP-HPLC) approach allowed for the quantification of rufinamide in pharmaceutical dosage forms. With a mobile phase of methanol and water (50:50, v/v), the technique used a gradient mode Symmetry Qualisil gold C18 column (4.6 x 150mm, 5 μm). For the detection method, a flow rate of 1 mL/min was employed at 220 nm. During a …
Published in Emerging Trends in Personalized Medicines · Vol. 1, Issue 1, 2024 · pp. 25–32 Read article