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1972 articles for “Octadec-9-enoic acid methyl esters” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Role of Electron Donors in MgCl2 Supported Ziegler-Natta Catalysis: DFT Approach
Abstract: An insight into the nature of carbonate-based electron donors in high-activity MgCl2 supported Ziegler-Natta (Z-N) catalysts has been studied and compared with conventional phthalate and diether systems by employing density functional theory (DFT) calculations. In the catalyst activation (one of the important processes to produce the active catalyst sites), the conventional monometallic and recently characterized bimetallic (TiCl2(Et)–Cl–AlEt2) active site are studied in the presence/absence of electron donors. These active sites …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 16, Issue 2, 2025 · pp. 51–81 Read article
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Fuzzy Variable Frame Analysis for Speech Recognition
Abstract: AbstractRecent works in machine learning has focused on models such as support vector machine (SVM), artificial neural network (ANN) and long short-term memory (LSTM), for automatically controlling the generalization and parameterization of the optimization process. This paper presents a fuzzy interpretation frame analysis procedure using LSTM classifier for noisy speech at word level using thresholding and local maxima procedure at framing level for the recognition process. Front end MFCC procedure …
Published in Current Trends in Signal Processing · Vol. 9, Issue 3, 2019 · pp. 9–18 Read article
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Perceptual Features Based Continuous Speech Recognition in Additive Noise Environment Using Various Modelling Techniques
Abstract: The main objective of this paper is to discuss the effectiveness of Mel frequency perceptual features and the noise reduction technique in evaluating the performance of multi speaker independent continuous speech recognition system in additive noise environment by using various modelling techniques. The proposed perceptual features are captured and trained using clustering technique, GMM, continuous density HMM and back propagation neural networks. Speech recognition system is evaluated on clean and …
Published in Current Trends in Signal Processing · Vol. 2, Issue 1-3, 2012 · pp. 67–81 Read article
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DESIGN AND ADDITIVE MANUFACTURING OF SOFT CAPTURE DOCKING SYSTEM USING MR FLUID
Abstract: This paper emphasizes the development of Satellite docking system using Magnetorheological fluid. Docking is a mechanism where a space craft tends to adhere with another space craft or an international space station maneuvering on its own. Magnetorheological fluid is a smart material that is controllable using magnetic field. When a magnetic field is applied to Magnetorheological fluid its viscosity increases and becomes viscoelastic and the liquid state changes to solid …
Published in Emerging Trends in Chemical Engineering · Vol. 5, Issue 3, 2018 · pp. 14–23 Read article
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Reverse Micellar Extraction of Direct Yellow-4 dye from Textile Effluent
Abstract: Textile industries and various dye houses are accountable for discharging highly polluted colored effluent leading to severe water pollution. Decolorization of textile effluent is the main challenge faced by these industries. In this study, the solvent extraction method was used to remove anionic dye Direct Yellow-4 (DY-4) from simulated effluent using cationic surfactant CTAB (Cetyltrimethyl ammonium bromide) in polar solvent isoamyl alcohol. The removal trend of the dye from aqueous …
Published in Emerging Trends in Chemical Engineering · Vol. 7, Issue 1, 2020 · pp. 5–9 Read article
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Use of Modified and Unmodified Calcium Oxide from Bio-resources as Heterogeneous Transesterification Catalyst for Biodiesel Synthesis: A Review
Abstract: Metal oxides have been widely used to catalyze various types of organic reaction, whatever supported or nonsupport metal oxide catalysts (supported with metal, mixed oxides and acids such as sulphoric acid). Calcium oxide is one of the most metal oxides used as heterogeneous catalysts; due to its favorable properties such as high activity, availability, low cost, and easily separated, as well as environmental friendly. Calcium oxide whether laboratory, prepared from …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 3, 2022 · pp. 30–34 Read article
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Effects of Oil Extraction Methods on Bio-diesel Production from Wild Grape Seeds: A Case Study of Soxhlet Extraction and Mechanical Press Engine Driven Expeller Methods
Abstract: In this research, two samples of wild grape seeds (Lannea Microcarpa) were used to produce biodiesel. The first sample was washed; dried and powdered, oil was extracted from the sample using soxhlet extraction method with n-hexane as solvent. The second sample was washed and dried, oil was extracted from the sample using mechanical press engine driven expeller. The oil yield from the first method was 33.3% while the oil yield …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 6, Issue 1, 2015 · pp. 35–40 Read article
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Optimization of Operational Parameters for Production of Bio-ethanol from Red Gram Straw
Abstract: AbstractBio-alcohol is a neat and cleaner source of energy, which could be obtained from locally available biomass. However, the complex structure of lignocellulose in biomass makes a primary protective barrier that prevents cell destruction. In order to break down this structure for the conversion of biomass to fuel ethanol, the cellulose and hemicellulosic materials must be broken down to corresponding monomers (sugars). It could be done easily with acid hydrolysis …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 10, Issue 2, 2019 · pp. 13–17 Read article
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Mapping the Vulnerabilities of Coastline Cities and Communities in Africa to Adapt to Climate Change: A Study of Lagos-Nigeria
Abstract: The Lagos coastline is active in nature and is located about less than six feet above sea level and houses about half of 15 million people in Lagos state, and is vulnerable to changes in coastline due to flooding and erosion. Climate change has aggravated this; sea-level rise will increase the risk of storm surge flooding, and coastal erosion threatening coastal cities. The annual rainfall along the coastline of Lagos …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 11, Issue 1, 2020 · pp. 44–57 Read article
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Corrosion Characterization of Silicon Carbide and Fly Ash Particulates Dispersion Strengthened Aluminium 5083 Composites
Abstract: Corrosion behavior of aluminium metal matrix composites is a major study aimed at evaluating the potential of using the materials for aerospace components. Aluminium 5083 is a specific class of alloy which is known for its corrosion resistance in extreme environments and is used in aerospace components. However, the studies on effect of reinforcements such as silicon carbide and fly ash on corrosion behavior of aluminium 5083 alloy has not …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 2, 2017 · pp. 9–21 Read article
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An Insight into the Production of Bioethanol from the Duckweed
Abstract: The ultimate goal of this study was provided an insight into the production of bioethanol from the duckweed. In this study three experimental parameters for maximizing bioethanol yield were investigated during the dilute acid hydrolysis; acid concentration (0.6-1M), temperature (80-120oC) and time (60-180minutes). The conversion of duckweed to bioethanol can be achieved mainly by four process step; the first step was pretreatment of duckweed to remove different contaminates, dried at …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 2, 2020 · pp. 48–56 Read article
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Study and Design of Reconfigurable Processor Peripherals using Xilinx Tools
Abstract: AbstractXilinx Platform Studio used in this paper to create a reconfigurable processor system. The Xilinx Embedded Development Kit (EDK) software allows mapping processor of a Microblaze plus several on-chip peripheral bus (OPB) peripherals. The EDK bridges the gap between Hardware (HW) and Software (SW), flows by providing a single HW/SW design environment. Xilinx ISE is to create a top-level design hierarchy. It extends a fully software architecture by generating and …
Published in Journal of Electronic Design Technology · Vol. 9, Issue 1, 2018 · pp. 17–23 Read article
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Musculoskeletal Discomfort among Grinders Working in Manufacturing Industry
Abstract: This study aims to assess the work related musculoskeletal discomfort in 94 subjects engaged in grinding task in manufacturing industry. All subjects who participated in this study were males with mean age (SD) of 34.26 (9.67) years and work experience in grinding job ranges from 01–27 years with a mean (SD) of 10.47(7.21). Most of the workers had an education below matriculation (81.9%), out of which 32.9% were devoid of …
Published in Journal of Industrial Safety Engineering · Vol. 4, Issue 1, 2017 · pp. 10–14 Read article
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Simulation and Comparative Analysis of Energy Storage Systems for Light Electric Vehicle
Abstract: Now-a-days it can be seen that most of people are focusing on cycling for exercising and short distance traveling due to unhygienic lifestyles and increase in environmental pollution and its harmful effect on human. Looking at such circumstances this paper is focused on to generate electrical energy produced by the person via paddling and later consume the same energy for automatic running of the cycle. The demand for Electric Bikes …
Published in Journal of Microelectronics and Solid State Devices · Vol. 9, Issue 3, 2022 · pp. 28–39 Read article
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Sugarcane Bagasse: A Promising Source for the Production of Nanocellulose
Abstract: AbstractThis paper reviews the recent studies of extraction of nanocellulose (cellulose nanofibers, nanocrystals, nanowhiskers, nanocrystalline cellulose, etc.) from sugarcane bagasse as agro-waste by different extraction methods such as acid-hydrolysis, alkaline-hydrolysis, enzymatic-hydrolysis, sonication, high-pressure homogenization, and shear ultrafine friction grinding, disk-grinder, including potential applications. Keywords: Sugarcane bagasse, nanocellulose, nanofibres, nanocrystals, acid-hydrolysis
Published in Journal of Polymer & Composites · Vol. 2, Issue 3, 2023 · pp. 23–27 Read article
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Facile Fabrication and Characterization of Novel Sterculia Gum–graft-poly(n-isopropylacrylamide-co-acrylamide) Hydrogel for Efficient Removal of Cationic Dyes from Aqueous Solution
Abstract: Water is indispensable component of life. Contamination of water is a severe problem that affects human health, aquatic vegetation, and fauna. Aside from various effluents, a variety of cationic dyes generated by industrial effluents contributes significantly to water contamination. In this study, a sterculia gum graft-poly(n-isopropylacrylamide-co-acrylamide) hydrogel was made using a graft copolymerization technique with N,N′-methylene-bis-acrylamide as a crosslinker, ammonium persulphate as an initiator, and tetramethylethylenediamine as an accelerator to …
Published in Journal of Polymer & Composites · Vol. 10, Issue 2, 2022 · pp. 29–59 Read article
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Recycling of Waste Generator Oils by Different Treatment Methods
Abstract: Engine oils with wide range of viscosities are used to lubricate an engine’s moving parts in different industrial units. Used engine oils are considered hazardous wastes because of their high content of pollutant ,thermal degradation products from the base oil and additives and combustion products from fuel and lubricant. The used oil still contains a large proportion of valuable base oil that may be used to formulate new lubricants if …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 103–115 Read article
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Production and Characterization of Essential oil using the Solvent Extraction Method from Brassica nigra seeds
Abstract: The purpose of this study is the Production, Optimization and Characterization of oil from Brassica nigra seeds using the Solvent Extraction Method. The result shows no difference from the seed oil extract from the mustard plants which grows in other parts of the world. This is to create awareness to utilize the Brassica nigra seed locally grown, as a potential source of edible oil for health benefit, such as additives …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 1, 2020 · pp. 5–20 Read article
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Examination of Recycled Used Lube Oil Using Niger Delta Locally Source Material
Abstract: Present research work was conducted to demonstrate in detail the acid-clay recycling processes of used lube oil techniques and treatment. Adequate attention is given to these techniques employed in the recycling of used lube oil. A major menace today is the uncontrolled dumping and improper disposal of used lube oils, the magnitude which is conservatively estimated to be very high and therefore threatens our environmental existence. A comparative study was …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 9–14 Read article
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Crude Oil Remediation in Soil Environment using Orange (Citrus sinensis) Peel
Abstract: The research on effective performance of citrus sinensis (orange) peel was monitored in crude oil remediation in loamy soil environment. Different bioreactors with different bio-stimulant dosage of 20g, 40g, 60g, 80g, 100g of room dry and sundry samples were tested to examine the performance on microbial activities on crude oil mitigation in each bioreactor. The nutrient of the bio-stimulants was determined as pH value of 6.63, total nitrogen content of …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 2, 2023 · pp. 24–34 Read article