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458 articles for “concentration”
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Fluorescence Detection Measurement of Quinine Sulphate Concentration
Abstract: For investigative study and analytical scientific applications, fluorescence spectroscopy analysis is a fantastic instrument. In additional to mineralogy, fluorescent labelling, sensors, and forensics applications, it is often utilised in biological, chemical, pharmaceutical, and medicinal applications. Additionally, it is employed for environmental monitoring, laser-induced chlorophyll fluorescence for agricultural yield evaluations, and the detection of proteins, organic substances, oils, and dyes. Quinine sulphate at a concentration of 10-5 M in 1 M …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 8, Issue 1, 2022 · pp. 25–29 Read article
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Concentrating cylindrical-parabolic solar collectors with thermo-electric generators for electricity production – viability assessment in India
Abstract: The use of concentrating solar collectors for converting solar insolation into thermal energy, followed by conversion of thermal energy to electricity via low to medium temperature thermoelectric generators at a particular location in India has been explored in this work. This may be considered a different route to obtaining solar heat and electricity apart from the more usual and direct solar photovoltaic conversion. Even though such a scheme may not …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 5, Issue 2, 2019 · pp. 6–17 Read article
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Floating Tracking Cooling Concentrator (FTCC) System - An Introduction
Abstract: In country like India, achieving energy security through sustainable technologies is the most challenging objective that needs to be fulfilled. Though Nuclear energy is expected to meet a part of India's energy demand by 2030 but its an unsafe way of producing power as was seen in Japan’s nuclear plant. Solar energy is one of the best alternatives that can provide power requirements. Floating tracking cooling concentrator (FTCC) Systems are …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 2, Issue 1, 2016 · pp. 1–4 Read article
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Plasmonic Devices for Electromagnetic Wave Concentration
Abstract: The EOT effect is enhanced by the concentration of EM waves. We explored optical transmission through arrays of nanohole pairs and found that the EOT effect through subwavelength nanoholes is enhanced by the confinement of electric field, and that the transmission is substantially higher than predicted. The optical transmission capabilities of arrays of isolated nanohole pairs and bridging nanohole pairs in gold with various geometrical configurations were explored and investigated …
Published in International Journal of Applied Nanotechnology · Vol. 8, Issue 1, 2022 · pp. 23–29 Read article
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Influence of Concentration Variation of Chemical Pre Treatments on Tensile Properties of Coir Fibre Reinforced Composites
Abstract: Composite material consisting randomly oriented coir fibres and epoxy resin have been studied. This study tends to analyze the tensile properties of coir fibre (10mm length) reinforced with epoxy resin by treating with Na0H and KMn04 of different concentrations. Fibers are bonded together with epoxy resin by hand layup process and cured at room temperature for 24 hours to form composite. Different tensile properties of composite were investigated in accordance …
Published in International Journal of Composite and Constituent Materials · Vol. 4, Issue 2, 2018 · pp. 13–20 Read article
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Protein Determination and Soluble Amino Acids Prediction in Various Solvents Extracted Solutions of Indigenous Red Lentil and Moong Pulse through Direct UV- Visible Spectrophotometer Technique: A Comparative Study
Abstract: In this comparative study, direct protein determination have been done for indigenous Red lentil (Lens culinaris) and Moong pulse (Vigna radiata) (obtained from Muzaffarpur, Bihar) by UV-Visible spectroscopy in three different solvents viz. double distilled water (ddH2O), ethyl alcohol (C2H5OH), and methyl alcohol (CH3OH). A few amino acids in solutions have also been predicted (not characterized) based on their peaks observed in UV-region by comparing them with reported range of …
Published in International Journal of Plant Biotechnology · Vol. 9, Issue 2, 2023 · pp. 42–48 Read article
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To Determine the Concentration of Paracetamol Solution by Calibration Curve Method Using UV-Visible Spectrophotometry
Abstract: A new method of spectrophotometric assessment in the UV-region has been developed for the analysis of acetaminophen in tablet form. This method, which uses Methanol and water as diluents, was developed and evaluated for the analysis of paracetamol. In spectrophotometric estimations, this does not reveal any interference. UV-Visible spectrophotometry is one of the most widely used techniques in pharmaceutical analysis. It comprises estimating the amount of UV or visible radiation …
Published in International Journal of Analytical and Applied Chemistry · Vol. 8, Issue 1, 2022 · pp. 45–51 Read article
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Effect of Temperature on Fungi Concentration in Crude Oil Remediation in an Aerated Bioreactor
Abstract: This research work was conducted to demonstrate the significance of temperature on the characteristics of fungi growth of crude oil degradation in fresh and salt water media. Comparison of fresh and salt contaminated water media was examined, the effect of temperature on crude oil degradation and the characteristics of total heterotrophic bacteria and fungi action. For Total Heterotrophic Fungi (THF) were Aspergillus niger, Aspergillus flavus, mucor sp, penicillium sp, Aspergillus …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 2, 2022 · pp. 12–21 Read article
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Regulation of Ca(OH)2 Concentration in the Hardening System “Gypsum Binder-Portland Cement” By Introducing Ash and Slag Additives when Producing Composite Gypsum Binders (CGB)
Abstract: This paper presents the results of the research and development of composite gypsum binders (CGB) based on technogenic raw materials in the form of ash and slag mixtures of fuel wastes, which reduces the consumption of Portland cement clinker up to 85% in comparison with traditional composite binders. The optimal compositions of the CGB are proposed. The impact of the type of mineral additives of technogenic origin and superplasticizer on …
Published in International Journal of Composite and Constituent Materials · Vol. 7, Issue 1, 2021 · pp. 1–8 Read article
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Chemotactic Behavior of Caenorhabditis elegans in Different Chemical Gradients
Abstract: The nematode Caenorhabditis elegans (C. elegans) has been extensively used as a model organism for studying various behavioral aspects in small organisms. Chemotaxis has, by far, been one of the most important studies to help us understand the fundamental search and avoid behavior of C. elegans. A typical chemotaxis assay involves the use of anesthetics to paralyze the worms near the center of a chemoattractant gradient that enables us to …
Published in International Journal of Animal Biotechnology and Applications · Vol. 5, Issue 1-2, 2019 · pp. 25–37 Read article
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Statistical and Artificial Neural Network for the Determination of Thermo-Physical Properties of Fomoditine Drug Using Mixed Hydrotropy
Abstract: The experimental determination of thermo-physical properties of fomoditine drug–mixed hydrotrope concentration mixture is very time consuming as well as tedious process. Any tool helpful in estimation of these properties without experimentation can be of immense utility. In present work, other tools of determination of properties of fomoditine drug–mixed hydrotrope concentration blends were tried. A traditional statistical technique of linear regression (principle of least squares) was used to estimate the specific …
Published in International Journal of Chemical Engineering and Processing · Vol. 1, Issue 2, 2015 · pp. 1–6 Read article
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Structure and dynamics of carbon dangling bonds in activated carbon materials from biomass†
Abstract: Activated carbon materials are inevitable for energy-related applications. Production of such materials from biomass is sustainable. Microporous activated carbon materials with high specific surface area and pore sizes of less than 2 nm find life-saving applications apart from their utility in environmental remediation. The free electron density of these materials is tunable and is a measure of electrical conductivity that is useful for the development of green and renewable energy …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 18–27 Read article
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Structure and dynamics of carbon dangling bonds in activated carbon materials from biomass
Abstract: Active carbon materials are inevitable for energy-related applications. Production of such materials from biomass is sustainable. Microporous activated carbon materials with high specific surface area and pore sizes of less than 2 nm find life-saving applications apart from their utility in environmental remediation. The free electron density of these materials is tunable and is a measure of the electrical conductivity useful for the development of green and renewable energy sources. …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 18–27 Read article
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High Performance Electrochemical Double Layer Capacitor (EDLC) Electrodes from Biomass Derived Carbon Materials †
Abstract: Insecurity and scarcity of resources lead to war and conflict as seen in Ukraine and Gaza. To prevent the dangerous effects of resource crises, especially, energy, it is imperative to invent energy sources at a war footing.The present review article is a serious attempt in that path. Super capacitors, especially, the electrochemical double layer capacitors (EDLCs) are potential energy storage devices that could be a substitute to fossil fuels. Yet, …
Published in International Journal of Energetic Materials · Vol. 10, Issue 9, 2024 · pp. 1–7 Read article
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Influence of Topical Application of Acetone Solution of Triterpenes on the Chitin Content in the Body Wall (Integument) of fifth Instar Larvae of Silkworm, Bombyx mori (L).
Abstract: Reduction in the chitin deposition in the insect body wall is one of the distinguishing features of juvenoid compound. Ten microliters ( 10 μL ) of different concentrations of acetone solution of standard solvent: Fernasol Methyl Ether (FME) and ten microliters ( 10 μL ) of different concentrations of acetone solution of each triterpene compounds (Squalene; Polypodatetraene; Malabaricane; Lanostane; Hopaneand and Oleanane) were utilized through the topical application to individual …
Published in International Journal of Green Chemistry · Vol. 6, Issue 2, 2020 · pp. 41–63 Read article
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Newly developed closed ecological cycle for solving environmental problems and obtaining high-quality biofuels
Abstract: Stagnant "green" zones of freshwater lakes, resulting from the excessive reproduction of phytoplankton in sunlit, stagnant waters, present a grave environmental hazard by causing the demise of phytoplankton and fish, and releasing hydrogen sulfide, rendering the water unsuitable for agricultural purposes. In this regard, the development of a closed ecological cycle, including the concentration of phytoplankton from the "green water" of the lake, which allows using most of the phytoplanktonconcentrate …
Published in International Journal of Environmental Chemistry · Vol. 9, Issue 1, 2023 · pp. 41–55 Read article
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Monitoring Fungi Transport Influenced by Heterogeneous Porous Sand Gravel Formation in Coastal Area of Port Harcourt
Abstract: This paper monitors the transport of fungi concentration in sand gravel formation, the formation were observed to develop heterogeneity in porous deposited strata, the migration process of fungi were observed from the simulation values through graphical representation, fluctuation of fungi concentration were experienced on the process of migration in exponential phase, the deposition of micronutrients were found to be under fluctuation in the soil thus affect the growth rate of …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 1, 2018 · pp. 49–57 Read article
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Spatial and Temporal Variation of Bioaerosols with Meteorology at Different Land Sites
Abstract: Air particulates associated with biological origins are termed as bioaerosols. These bioaerosols consist of different species of bacteria, fungi, pollen and spores, etc. and can be allergenic and infectious in nature. The study is an attempt to understand the seasonal variation in bioaerosols concentration at three different land use sites: site I (commercial site), site II (dumping site), Site III (vegetated site). Statistical correlation was applied to infer the relation …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 2, Issue 1, 2016 · pp. 12–20 Read article
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Ignition Characteristics for Thermal Runaways of Hazard Chemical Reactions of Different Degree of Reactions
Abstract: Thermal explosion characteristics of a hazardous chemical reaction of different reaction order have been investigated analytically and numerically for both Arrhenius and Frank-Kamenetskii approximation models for the rate of reaction. The critical conditions in the temperature-time, concentration-time, and temperature – concentration planes of solutions are presented. A comparison between the results of analytical solutions in these planes is offered. The solutions show that the critical states in the temperature-time plane …
Published in International Journal of Energetic Materials · Vol. 1, Issue 1, 2015 · pp. 31–55 Read article
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Finite Element Analysis of Rectangular Plate of S460J2 With Multiple Circular Holes
Abstract: Stress concentration is the main root cause of failure of multi-hole plates in bi-axial loaded conditions. Therefore it is essential to study such Stress Concentration Factors (SCF) to achieve the failure criteria. The method used for analysis is FE analysis. The main cause of increment in the stress is the geometrical irregularity, which may be caused by the various machining operations. Some kind of operations also requires such irregularity for …
Published in International Journal of Mechanics and Design · Vol. 4, Issue 2, 2018 · pp. 7–14 Read article