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458 articles for “concentration”
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Evaluation of Some Trace Metals (Zn, Cd, Cu and Pb) in Sewage Sludge Samples Taken from Some Pumping Stations in Benghazi-Libya
Abstract: Due to the little data available on the levels of trace metals concentration in sewage sludge in and around Benghazi city, it was necessary to determine the current concentration, composition, distribution and sources of trace metals in the sludge of different wastewater treatment plants. Accordingly, raw sewage sludge samples collected from sixteen wastewater-pumping stations at Benghazi city have undergone evaluation of pH and some trace metals concentrations (mainly Zn, Cd, …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 2, 2020 · pp. 13–19 Read article
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Continuous Renewable Energy Generation by Solar Radiation
Abstract: The world is seeing a changing trend from conventional cooking system to most reliable and predominant solar cooking system which is going wild commercially. This ideal attempts a heat energy storage for power generation in which a Molten Salt is proposed for Thermal Energy Storage for Concentrating Solar cooking systems. In the concept numerous large, flat, sun-tracking mirrors, known as trough are used which focuses sunlight onto a receiver at …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 4, Issue 2, 2018 · pp. 32–41 Read article
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Enhanced Recovery by Hydrotropes in Oxidized Coal Flotation
Abstract: AbstractSo far flotation proved its best in improving the concentration of low grade fines by recovering the maximum with the use of advanced flotation reagents. In this context we propose the process optimization with the use of hydrotropes as activators in the coal flotation process. It is observed that sodium benzoate a known hydrotrope helped in increasing the recovery of the concentrate percent from 12.8% at plant condition to 31% …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 7, Issue 1, 2021 · pp. 19–23 Read article
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Model Analysis of Bacteria Growth Rate in Polluted Stagnant Water Environment
Abstract: The Total Bacteria Count (TBC) analysis was carried out to investigate growth rate of microorganism in the stagnant water media. The analysis was also conducted to ascertain if the polluted water media can favour the growth bacteria, and hence, assist in the degradation Total Petroleum Hydrocarbon (TPH) content in water. The bacteria growth was slow from day 1 up to day 56, but began to increase rapidly between 70th and …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 1, 2023 · pp. 11–17 Read article
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Effect of Temperature on Particle Size Mixed Ratio on Petroleum Hydrocarbon Treatment in Packed Bed Unit using Adsorbent
Abstract: The significance of temperature on the potential characteristics of the adsorbent performance in treatment of polluted water medium was monitored by using both room and sun dried bioadsorbent. The research furthermore showcases the effect of particle size of the bioadsorbent in the treatment process and obtained result revealed that the particle size is a contributing factor to the efficiency and the potential in which the rate of Total Petroleum Hydrocarbon …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 9, Issue 2, 2023 · pp. 1–12 Read article
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Predictive Evaluation of Erema Community Groundwater in Egi for the Purpose of Agricultural Use
Abstract: The investigation in this research is to study the developed sodium absorption ratio model for predicting and monitoring SAR concentration of Erema community groundwater by Ukpaka, 2016 given as, SAR = – + with coefficient of determination of that is modified in this research as + = 0 which is now the modified differential equation of sodium absorption ratio for Erema community it fitness in assessing SAR concentration. Validation of …
Published in International Journal of Water Resources Engineering · Vol. 3, Issue 2, 2017 · pp. 91–96 Read article
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Predictive Model to Monitor Dissolved Oxygen Deficit and Velocity Variation Influenceon Mycoplasima Transport in Choba River
Abstract: This paper expressed various impacts from oxygen and river velocity on the transport of Mycoplasima in Choba River. The study monitor the impact of these two parameters at different pointsource of waste discharge in the River, other parameterswere integrated, but were not considered significant, since there rate of impact were not determined in the study location. The two considered parameters were applied in the system to determined their direct rate …
Published in International Journal of Water Resources Engineering · Vol. 6, Issue 1, 2020 · pp. 10–20 Read article
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Convolutional Neural Network Algorithm for Stress Field Approximation for a Uniaxially Loaded Plate with Holes
Abstract: ABSTRACTKnowing the high stress concentration and its location around a hole is of practical importance in designing engineering structures, effective parameters can be selected in order to achieve minimum stress concentration around the hole(s). The visualisation of the stress distribution is done experimentally or numerically using finite element analysis (FEA). This study involved the approximation of the von Mises stress field distribution around regular holes in finite metallic plates, based …
Published in International Journal of Image Processing and Pattern Recognition · Vol. 6, Issue 2, 2020 · pp. 1–12 Read article
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A Review: Solar Power Collector
Abstract: Thermal applications and power generation from solar radiation are emerging rapidly as the world continues to look for future energy sources in addition to conventional sources. Solar thermal collectors are one of the basic requirements for converting the sun's energy into usable forms. These collectors are divided into two groups, non-concentrated solar thermal collectors and concentrated solar thermal collectors. The objective of this report is to review 'Solar Flat Plate …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 8, Issue 2, 2022 · pp. 43–49 Read article
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Synthesis of White Light Emitting Water-soluble CdZnS Quantum Dots at Room Temperature
Abstract: Water-soluble alloyed CdZnS quantum dots (QDs) have been successfully prepared at room temperatures by reacting a mixture of Cd(CH3COO)2 and Zn(CH3COO)2 with Na2S using thiolactic acid (TLA) as a surface capping agent. The photoluminescence (PL) spectra of the alloyed QDs are determined on the basis of the Cd2+/Zn2+ molar ratio, reaction pH, intrinsic Cd2+and Zn2+reactivities toward Na2S and the concentration of capping agent. A systematic blue shift in emission wavelength …
Published in International Journal of Energetic Materials · Vol. 7, Issue 1, 2021 · pp. 32–39 Read article
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Effects of Tungstate and Nitrite Ions as Corrosion Inhibitor for Cr-10Zr-10W Alloy in 0.5 M NaCl Solution
Abstract: The effect of different concentrations of tungstate and nitrite ions as corrosion inhibitors on the corrosion behavior of the sputter-deposited ternary Cr–10Zr–10W alloy was studied in 0.5 M NaCl solution open to air at 25±1°C using corrosion tests and corrosion potential measurement. The use of both the tungstate and nitrite ions enhanced the corrosion resistance properties of the alloy in 0.5 M NaCl solution. It is found that the tungstate …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 1, 2019 · pp. 11–19 Read article
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Synthesis and Characterization of Nickel Doped BFO Nanoparticles
Abstract: In the present, work we have synthesized the pure and Nickle doped bismuth ferrite at different concentration by the chemical route method. Increasing in the doping concentration leads to generation of secondary phase, thus dopant concentration is maintained to 5mol%. XRD was used to confirm the phases transformation of nanocrystalline composite materials along with measurement of the crystallite size. Scanning electronic microscopy (SEM) was used to study the morphological properties …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 4, Issue 1, 2018 · pp. 17–29 Read article
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Potato Starch-Based Composites for Industrial Application
Abstract: Plastic has become an essential element in our daily life. Plastics derived from polyolefins such as polyethylene are currently used in plastic film for food wrapping, garbage bags, mulching, compost bags, and many more. These plastics are typically inactive and resistant to microbial attack and hence they remain in nature for a long time without any deformation and has a harmful effect on atmosphere. Biodegradable plastics can help solve this …
Published in International Journal of Composite and Constituent Materials · Vol. 8, Issue 2, 2022 · pp. 1–12 Read article
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Experimental evaluation of dc Conductivity of Rice Husk Reinforced Polypropylene Composites with addition of cenosphere
Abstract: Insulating materials are used in electrical power circuits to prevent leakages of current. Main objective of this study is to evaluate the dc conductivity of rice husk filled polypropylene composites with and without cenosphere. The conductivity at room temperature was found to decreases from 2.64e-13 to 9.371e-14 S cm-1 with the addition of cenosphere. Dense packing of the material, collapse of pores and decreases in air gap between the rice …
Published in International Journal of Composite Materials and Matrices · Vol. 1, Issue 1, 2015 · pp. 20–27 Read article
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Mechanical and Barrier Properties of LLDPE-LDPE Blend Film with Micro Clay
Abstract: The present study LLDPE-LDPE(50-50 wt%) were compounded with added microclay filler using silicone oil as dispersing agent by twin screw compounding. The three formulations were taken as 1%, 3%, 5% of microclay. The extruded standard has been cut into pellets by cutter. Then films were made using blown film extrusion and then tested. As the filler content increases, the flow behaviour of the film increases. Tensile strength increases upto 1% …
Published in International Journal of Composite Materials and Matrices · Vol. 6, Issue 2, 2020 · pp. 38–46 Read article
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Bending Solutions of Fully Clamped Orthotropic Rectangular Thin Plate Using Finite Integral Transform Method
Abstract: Plate as an engineering material is used widely in several areas of Engineering work, especially civil engineering structures as slab. This research work presents the solutions to the bending of orthotropic thin rectangular plates, fully clamped at all edges and subjected to three different loading conditions such as uniformly distributed load, centrally loaded concentrated point load and hydrostatic pressure, using the finite integral transform method. The results derived from this …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 4, Issue 2, 2018 · pp. 12–21 Read article
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Comparative Acoustical and Viscometric Study Of L-Alanine And L-Arginine in Aqueous Glycerol Medium: Effect of Side Chain Polarity and Charge On Molecular Interactions
Abstract: The acoustical and viscometric properties of L-Alanine (neutral, nonpolar) and L-Arginine (basic, charged) in 10% aqueous glycerol have been investigated over a concentration range of 0.01 to 0.1 mol·kg⁻¹ at temperatures T = 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15 K under atmospheric pressure. Experimental measurements of ultrasonic velocity (µ), density (ρ), and viscosity (η) have been used to derive adiabatic compressibility (), apparent molar volume (Φv), partial molar volume …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 2, 2026 Read article
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Evaluating Remedy of Oil Polluted Environment Using Fermented Cassava Liquid
Abstract: A 28-day experimental investigation was conducted to evaluate the effectiveness of fermented cassava liquid in the bioremediation of crude oil-contaminated soils. Three soil types, namely clay, sandy-loamy, and swampy soils, were examined. Cassava liquid was fermented for six days to allow sufficient microbial growth before being introduced into the contaminated soil samples. Uninoculated contaminated soil served as the control. Soil samples were collected at one-week intervals throughout the study for …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 2, 2026 Read article
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Comparative Acoustical and Viscometric Study Of L-Alanine And L-Arginine in Aqueous Glycerol Medium: Effect of Side Chain Polarity and Charge On Molecular Interactions
Abstract: The acoustical and viscometric properties of L-Alanine (neutral, nonpolar) and L-Arginine (basic, charged) in 10% aqueous glycerol have been investigated over a concentration range of 0.01 to 0.1 mol·kg⁻¹ at temperatures T = 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15 K under atmospheric pressure. Experimental measurements of ultrasonic velocity (µ), density (ρ), and viscosity (η) have been used to derive adiabatic compressibility (), apparent molar volume (Φv), partial molar volume …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 11, Issue 2, 2026 Read article
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Microbial Production of Lipase Enzyme Using StrainCandida tropicalis and Its Application inBioscouring and Biodiesel
Abstract: The growing interest in lipase production is driven by the potential biotechnological applications. In present study lipase producing enzyme using strain Candida tropicalis isolates by using tributyrin agar plate method and confirmation on sprit blue agar which showed the positive result via a zone of hydrolysis. lipase enzyme was carried out by SSF and SMF showing more effective production SSF (25.97 ± 0.47 U/ml/min) as compared to SMF (10.27 ± …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 12, Issue 2, 2026 · pp. 1–21 Read article