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24 articles for “Quantification”
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Commercial Scale Quantification of Lignin
Abstract: Lignin, an aromatic biopolymer, in the terrestrial lignocellulosic biomass constitutes the single largest and sustainable source of biofuels and biochemicals. The recalcitrant nature of lignin is a hindrance to its chemical or biochemical conversion. Moreover, its insolubility in water too is a major challenge in its quantification which is a necessary step prior to and after its conversion. Though there are celebrated quantification methods like the classical Klason lignin method …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 2, 2025 · pp. 20–25 Read article
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Quantification of Morphine, Codeine, and Dihydrocodeine in Carissa carandas Leaves and Fruit Using LC-MS/MS: The Impact of Drying on Alkaloid Concentration
Abstract: This study presents a method for quantifying morphine, codeine, and dihydrocodeine in Carissa carandas (Karonda) leaves and fruit, employing morphine-D3 as an internal standard (1 µg/mL) to ensure accuracy. Samples are prepared at 25 ng/mL and extracted using solvent techniques, with an optional solid-phase extraction step to mitigate matrix effects. Quantification is conducted via LC-MS/MS, providing robust sensitivity. Results show that drying concentrates these alkaloids, particularly morphine in fruit, due …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 1, 2025 · pp. 49–61 Read article
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Fast Lanes by Design: Quantifying RFID Electronic Tolling Impacts on Plaza Halt Times in Highway
Abstract: Abstract—Rapid urban growth and the steady rise in the number of vehicles have made congestion at highway toll plazas a persistent and costly problem. Long queues at toll booths not only waste travelers’ time but also increase fuel consumption, air pollution, and overall operating costs of the transport system. Traditional manual toll collection methods contribute significantly to these delays, as vehicles are required to stop for cash or card-based transactions. …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 12, Issue 1, 2026 · pp. 1–6 Read article
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Fast Lanes by Design: Quantifying RFID Electronic Tolling Impacts on Plaza Halt Times in Highway
Abstract: Abstract—Rapid urban growth and the steady rise in the number of vehicles have made congestion at highway toll plazas a persistent and costly problem. Long queues at toll booths not only waste travelers’ time but also increase fuel consumption, air pollution, and overall operating costs of the transport system. Traditional manual toll collection methods contribute significantly to these delays, as vehicles are required to stop for cash or card-based transactions. …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 12, Issue 1, 2026 Read article
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Fast Lanes by Design: Quantifying RFIDElectronic Tolling Impacts on Plaza HaltTimes in Highway
Abstract: Abstract Rapid urban growth and the steady rise in the number of vehicles have made congestion at highwaytoll plazas a persistent and costly problem. Long queues at toll booths not only waste travelers’ timebut also increase fuel consumption, air pollution, and overall operating costs of the transport system.Traditional manual toll collection methods contribute significantly to these delays, as vehicles arerequired to stop for cash or card-based transactions. To address these …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 12, Issue 1, 2026 · pp. 1–6 Read article
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Establishment of a Sensitive LC-MS Method for Pharmacokinetic Evaluation of Decitabine and Cedazuridie in Rat Plasma
Abstract: A simple, rapid, and highly sensitive liquid chromatography–mass spectrometry (LC–MS) method was successfully developed and validated for the simultaneous determination of Decitabine and Cedazuridine in plasma matrices. The method demonstrated excellent linearity across the selected calibration range, with correlation coefficients (R²) consistently exceeding 0.999 for both analytes, indicating strong analytical performance. Method validation was carried out in accordance with ICH Q2(R2) and US FDA bioanalytical method validation guidelines, ensuring compliance …
Published in International Journal of Green Chemistry · Vol. 12, Issue 1, 2026 · pp. 34–42 Read article
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Establishment of a Sensitive LC-MS Method for Pharmacokinetic Evaluation of Decitabine and Cedazuridie in Rat Plasma
Abstract: Abstract A simple, rapid, and highly sensitive liquid chromatography–mass spectrometry (LC–MS) method was successfully developed and validated for the simultaneous determination of Decitabine and Cedazuridine in plasma matrices. The method demonstrated excellent linearity across the selected calibration range, with correlation coefficients (R²) consistently exceeding 0.999 for both analytes, indicating strong analytical performance. Method validation was carried out in accordance with ICH Q2(R2) and US FDA bioanalytical method validation guidelines, ensuring …
Published in International Journal of Green Chemistry · Vol. 12, Issue 1, 2026 · pp. 34–42 Read article
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Design And Finite Element Analysis Of RCC And Timber-Composite RCC Columns with Seismic Effect
Abstract: This study presents the design and finite-element analysis (FEM) of three reinforced cement concrete (RCC) column configurations under seismic effect, with the objective of quantifying how a central Sal-timber core alters the structural performance of an otherwise conventional RCC column. All three columns are of identical external size (300 × 300 mm) and clear height 3.0 m, fixed at both ends, and use M30 concrete, Fe500 steel, 4–16 mm φ …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 12, Issue 2, 2026 Read article
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A Study on Machine-Learning-Driven Insight into theThermal Behavior of Polymers and Composite Materials
Abstract: The thermal performance of polymeric and composite systems underpins their suitability for aerospace, electronics, and energy‑storage applications, yet reliable prediction of temperature‑dependent properties remains a formidable challenge. In this work we present a data‑driven framework that harnesses modern machine‑learning (ML) techniques to forecast key thermal metrics – glass‑transition temperature (Tg), melting point (Tm), thermal conductivity (k), and decomposition onset (Td) – from a chemically informed descriptor space. A curated database …
Published in International Journal of Polymer Science and Engineering · Vol. 12, Issue 1, 2026 · pp. 1–11 Read article
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The Biomechanical Impact of Slipper Sole Compliance on Lumbar Spine Load: A Quantitative Analysis of Indoor Footwear Ergonomics
Abstract: Abstract The global shift toward remote work has significantly increased the duration of indoor footwear usage, yet the ergonomic standards for slippers remain critically under-researched compared to athletic or industrial footwear. While "high-compliance" or soft slippers are traditionally marketed for immediate comfort, excessive mechanical softness may lead to foot instability, altered gait kinetics, and subsequent compensatory stress on the lumbar spine. This study aims to quantify the correlation between varying …
Published in International Journal of Mechanics and Design · Vol. 12, Issue 1, 2026 · pp. 30–35 Read article
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Mitigation Measures and Disaster Preparedness: Kapkese Landslides in Kokwet Sub-Location, Kericho County, Kenya
Abstract: Abstract: The Kapkese landslide disaster struck again in December 2015, precipitated by intense, prolonged heavy rainfall from El Niño rainstorms that devastated much of Kenya. Located in the remote Kokwet Location within Kipkelion West Constituency, Kenya, this rural village has endured recurrent geohazards, most notably a deadly May 2003 event that buried a homestead, resulting in the tragic loss of a mother and her three young daughters. These incidents have …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 12, Issue 1, 2026 Read article
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Synthesis, Spectral Study, SEM Analysis and Antibacterial Study of New Indole Azo Ligand and Complexes
Abstract: Azo ligands have developed significantly in recent decades due to their fundamental role in the coordination chemistry of transition elements. Their rapid response to coordination bonding in ligand and complex chemistry, particularly with divalent ions, is a key factor. The azo-bridged bond has played a well-established role in the formation of cobalt, nickel, and copper complexes. In this study, we prepared a novel ligand, an indole derivative bonded to an …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 1, 2026 · pp. 1–10 Read article
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Analytical Evaluation of heavy metals in eyeshadows: A Risk assessment and Implications for Public Health Regulatory Reforms in Nigeria
Abstract: This study employs advanced analytical techniques to assess heavy metal contamination (Pb, Cd, Cr, Ni, Zn) in 18 commercially available eyeshadow products (local and imported) from Owerri Metropolis, Nigeria. Quantification was conducted using atomic absorption spectroscopy (AAS), while risk evaluations incorporated chemometric modeling approaches. Results revealed significant contamination in locally manufactured brands, particularly those containing calabash chalk (Nzu) as a base ingredient. Lead and nickel concentrations reached 166.58 ± 6.5 …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 1, 2026 Read article
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Evaluation of Michaelis-Menten Constants of TPH Degradation on Clay Soil
Abstract: The degradation of Total Petroleum Hydrocarbons (TPH) in petroleum-contaminated clay soil remains a major environmental concern, particularly in regions with limited remediation options. This study investigates the enzymatic kinetics of TPH biodegradation using Michaelis-Menten modeling in the presence of Bryophyllum pinnatum leaf extracts as biostimulants. Fourteen bioreactors containing 2000g of contaminated clay soil were prepared with 100ml of crude oil and treated with varying doses (100ml, 200ml, and 300ml) of …
Published in International Journal of Chemical Engineering and Processing · Vol. 11, Issue 2, 2025 · pp. 6–12 Read article
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Technical Insights into the Industrial Synthesis and Production of Ten Prominent Plant Growth Regulator Molecules: Process Flow and Mass Balance Determination
Abstract: Plant Growth Regulators (PGPRs) are indispensable tools in modern agriculture, offering precise control over various aspects of plant development and enhancing crop productivity. While their diverse applications are widely recognized, detailed technical insights into their industrial manufacturing processes, including synthesis routes, process flow, and mass balance, are often limited. This manuscript addresses this gap by presenting a comprehensive technical analysis of the industrial synthesis and production of ten prominent PGPR …
Published in International Journal of Analytical and Applied Chemistry · Vol. 11, Issue 2, 2025 Read article
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Wettability of carbon fibers with resin matrices from dynamic contact angle measurements
Abstract: Wettability is the property that quantifies the propensity of a solid surface (carbon fiber) to be covered by a liquid (resin). For a wettable solid, the solid-liquid contact is favoured and as a result the liquid spreads on such surface of the solid. Spreading of the liquid on the solid surface is primarily driven by the adhesive forces between the liquid and the solid, while the inter molecular cohesive forces …
Published in International Journal of Composite Materials and Matrices · Vol. 11, Issue 2, 2025 Read article
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Towards Net Zero: Retrofitting Commercial Halls for IGBC Compliance
Abstract: This paper outlines an integrated energy-efficient retrofitting framework for Shyamvadi, a 10,000 sq. ft. commercial party hall in Junagadh, Gujarat, targeting IGBC Existing Building certification. The retrofit scope included the deployment of a 34.8 kW rooftop solar PV system, LED lighting upgrades, BEE 5-star-rated inverter HVAC units, envelope insulation using reflective coatings and PUF panels, and IoT-based energy monitoring. Baseline and post-retrofit performance data were analysed to quantify energy savings, …
Published in International Journal of Architecture and Infrastructure Planning · Vol. 11, Issue 1, 2025 Read article
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Study on the Possibility of Ginger Juice Extract in Methyl Orange Decolorization
Abstract: In this research work, the authors investigated the potential of ginger juice as a natural and eco- friendly agent for the decolorization of an azo dye under varying pH conditions. Specifically, the study focused on the probability of dye decolorization at pH 6 and pH 8 to understand the influence of acidic and alkaline environments. Additionally, the effect of hydrogen peroxide (H₂O₂) as a co- treatment agent was assessed. For …
Published in International Journal of Plant Biotechnology · Vol. 11, Issue 1, 2025 · pp. 26–33 Read article
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Integrating Trees, Shrubs, and Perennial Biomass Crops into Livestock Systems: A Pathway to Sustainable Tropical Farming Systems
Abstract: Livestock production in the tropics faces increasing challenges due to climate change, land degradation, feed shortages, and environmental concerns. Integrating trees, shrubs, and perennial biomass crops into livestock farming systems offers a sustainable approach to addressing these challenges. This study explores the potentials of agroforestry-based livestock systems in enhancing feed availability, improving animal nutrition, promoting soil health, and mitigating the environmental footprint of livestock farming. Trees and shrubs provide high-protein …
Published in International Journal of Animal Biotechnology and Applications · Vol. 11, Issue 1, 2025 · pp. 11–28 Read article
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Evaluations of Treatment Performance of Tangerine and Cashew Leaves in TPH Removal from Contaminated Swampy and Clay Soils
Abstract: This study evaluates the effectiveness of two plant-based treatments, Tangerine (Citrus reticulata) and Cashew (Anacardium occidentale) leaves, in the bioremediation of Total Petroleum Hydrocarbons (TPH) from polluted swampy soil. The performance of these treatments was assessed over an 84-day period using 100g of each treatment. The results demonstrated significant degradation of TPH, with Tangerine leaf showing a slight edge over Cashew leaf in the remediation process of crude oil- contaminated …
Published in International Journal of Green Chemistry · Vol. 11, Issue 2, 2025 · pp. 29–34 Read article