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1934 articles for “4” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Thermally Stimulated Luminescence and Electron Spin Resonance Study of Gamma Irradiated Poly Carbonate
Abstract: Polycarbonate (PC) is an industrially important polymer. Gamma irradiation effects of PC are investigated by thermally stimulated luminescence (TSL) and electron spin resonance (ESR) techniques. The TSL spectra of irradiated PC have shown two glow peaks, around 149oC (422 K) and 165oC (438 K). The observed glow peaks are analysed by initial rise methods, Chen’s method and modified initial rise method. The trap parameters corresponding to the two glow peaks …
Published in Emerging Trends in Chemical Engineering · Vol. 4, Issue 2, 2017 · pp. 23–39 Read article
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Formation, Analysis and Characterization of Wood Pyrolysed Oil
Abstract: Pyrolysis of wood is the possible path for converting biomass to higher valuable products such as bio-oil, bio-char and bio-gas. Bio-oil or liquid bio-fuels have higher heating values, so it can store and transport more conveniently the by-products bio-char and bio-gas, which can be used to provide heat required in the process. This work is focused on the formation, analysis and characterization of bio-oil which was obtained from the mixed …
Published in Emerging Trends in Chemical Engineering · Vol. 3, Issue 2, 2016 · pp. 36–41 Read article
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Mass Transfer Correlation Development in Circular Conduit with the Presence of Entry Region Spiral Tape Wound on Rod as Turbulence Promoter in Homogeneous Flow
Abstract: In this study, an experimental investigation has been carried out to develop a model for mass transfer correlation. As a part of that experimental data obtained in terms of limiting current values and the data was measured for various flow rates using spiral tape wound on a rod promoters of varying geometric parameters. The geometric parameters are height (H), width (W) and the pitch (P). The experiment carried out for …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 3, 2014 · pp. 1–14 Read article
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DNA Binding and Cleavage Studies of Cobalt Complexes Containing Bioactive Mixed Ligands
Abstract: The complexes containing bioactive ligand of the type [Co(L1L2)] (PF6)2 complex (1) (where L1=1,10-phenanthroline and L2 = N,N-dimethyl-2-{5-[(pyrrolidin-1-ylsulfonyl)methyl]-1H-indol-3-yl}ethanamine (almotriptan) in 1:1 molar ratio of ligands) and [Co(L1L3L4)] (PF6)2 complex (2) (where L3=4H-1,2,4-triazol-4-amine, L4=1H-benzimidazole-2-thiol and the ligands are in the ratio 1:1:1, were synthesized and characterized. The DNA binding property of the complexes with calf thymus DNA has been investigated using absorption spectra, viscosity measurements and thermal denaturation experiments. The intrinsic …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 1, 2014 · pp. 49–56 Read article
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Modelling the Reliability and unreliability of Selected Gas Plant Units
Abstract: This research demonstrates the reliability analysis of some units of some selected Gas Plant. In the study, unit plants of reboiler, stripper, cooling, compressor, acid dehydrated, heat transfer fluid, expander, and liquefaction were examined in terms of reliability and unreliability for a period of eight years. The results obtained revealed decrease in reliability value of unit plant with increase in period of utilization, whereas unreliability and cost increased with increase …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 2, 2022 · pp. 1–18 Read article
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The Application of Buckingham Pi Theorem to Monitor Procurement Service Delivery: A Case Study of Walnut Wood
Abstract: The aim of this research is to demonstrate the application of Buckingham theorem to monitor procurement delivery of Walnut wood. In this investigation, wood material of walnut wood density, constant area, diameter and velocity was used to monitor, predict and simulate the weight, delivery time and tensile strength on the truck. The walnut wood material was investigated in terms of delivery time, tensile strength and the effect on the truck …
Published in Emerging Trends in Chemical Engineering · Vol. 10, Issue 1, 2023 · pp. 54–63 Read article
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DESIGN AND DEVELOPMENT OF COMPRESSED AIR ENGINE
Abstract: The consumption of fossil fuels has gone up to such a high level that problems like global warming, ozone layer depletion has become a prominent issue of concern .In order to protect the environment, harnessing of renewable energy is important. Having this overview in our mind, we designed and developed a model of a compressed air engine. This model utilizes the energy of compressed air to do mechanical work. To …
Published in Journal of Automobile Engineering and Applications · Vol. 4, Issue 2, 2017 · pp. 40–47 Read article
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Experimental, Analytical and Numerical Study of Energy Absorption Properties of Aluminum Crush Boxes with and without Buckling Initiators (Axial Loading)
Abstract: The crashworthiness in automobile is stated as the capability of a passenger car and its interior arrangements to safe-guard occupants from harm. Whenever an accident occurs, the passengers in the car can be injured due to one of the following reasons: (1) excess acceleration force; (2) physical injury from contact with injurious surfaces, and; (3) exposed to fire, smoke, and chemicals released during accidents. Thus effective crashworthiness design must take …
Published in Journal of Automobile Engineering and Applications · Vol. 4, Issue 2, 2017 · pp. 1–9 Read article
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Mechanical Properties of Al6061-Al2O3 Metal Matrix Composite Using Die Casting Technique
Abstract: 6061Al - Al2O3 Metal matrix composites are applied as conventional materials in the domain of aerospace, automotive and marine applications to enhance the physical properties. The present work aimed to prepare metal matrix composite using 6061Al as the matrix material. Particulates of Al2O3 with 40 µm were reinforced using die casting technique. Further level of reinforcement is being varied from 0-16wt% in steps of 4wt%. Microstructural characterization has been conducted …
Published in Journal of Automobile Engineering and Applications · Vol. 5, Issue 3, 2018 · pp. 11–20 Read article
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Simulation of The Performance of Li-Ion Batteries for Electric Vehicles
Abstract: In this work, a simulation process, focused to study the performance of Li-ion batteries under variable driving conditions has been developed. The simulation has been tested for a battery of 100 kWh, 400 V and 250 Ah, in an electric vehicle operating in pure electric mode (EV). The results have been compared to the European standard NEDC and WLTP cycles, producing a range of 196 km for the NEDC cycle …
Published in Journal of Automobile Engineering and Applications · Vol. 7, Issue 3, 2020 · pp. 1–15 Read article
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Optimization of Stellite Defect in Manufacturing of Engine Valves: A Review
Abstract: Intake and exhaust valves are the important components of an engine valves which are used to control flow and replacement of fuel gases inside the cylinder. This work mainly deals with defect known as stellite defect in different sizes of engine valves; and methodology adopted to prevent valve from stellite defect. Valve base material is low alloy steel (AISI 4140) and upper surface of engine valve is generally hard faced …
Published in Journal of Automobile Engineering and Applications · Vol. 3, Issue 1, 2016 · pp. 1–4 Read article
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Performance Evaluation of a Tilted Single Axis Photovoltaic Tracking System under Different Weather Conditions
Abstract: AbstractExperimental studies were carried out using 37 W photovoltaic (PV) panels under different weather conditions over a prolonged duration of time to evaluate the performance of a low cost tilted single axis tracking system in comparison with a horizontal single axis tracking system and two fixed PV systems. A horizontal single axis PV panel tracker (HSAPVPT) and a tilted single axis PV panel tracker (TSAPVPT) were set up to compare …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 2, 2017 · pp. 45–55 Read article
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Design, Simulation, Installation and Economic Analysis of 50kW Grid Connected Solar PV System
Abstract: AbstractThis study aimed to develope a standard procedure for the design of Gridconnected solar PV systems using the roofs of buildings. The standard procedure developed was validated in the design of a 50 kW Grid-connected solar PV system for Vijayaraje Institute of Science and Management (VISM), Gwalior, Madhya Pradesh, India. The project began with a pre-feasibility study of a 50kW Grid-conducted solar PV system using meteonorm software developed by meteotest. …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 9, Issue 2, 2018 · pp. 1–14 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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A SIMULATION STUDY OF THE EFFICIENCY OF HIGH VOLTAGE α-Si STAND-ALONE PV INSTALLATIONS
Abstract: The paper analyzes different configurations, direct-PV, PV-battery, either with PWM or MPPregulator, and hybrid-PV, of stand-alone PV installation operating with high voltage α-Si panels thatsupplies energy to a DC-AC external circuit. Global efficiency is determined as a function of voltageconversion ratio and individual element efficiency. The paper concludes that direct-PV is the mostefficient mode with average performance ratio (PR) of 92.2% followed by PV-battery with MPPT,68.3% of efficiency, and PWM …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 12, Issue 2, 2021 · pp. 1–11 Read article
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Low cost method for fuel production from Plastic waste
Abstract: There is a huge problem of plastic waste remaining bulbous, eventhough many solutions are put forth. The production of synthetic plastic has reached 400 million tons worldwide, from which 50% is thrown in landfills or recycled; 15 million tons reach seas and oceans.Inceneration and other waste management methods have many limitations, which includes hazards of secondary pollutants. And moreover, there is no more land filling space for waste accumulation. Land …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 12, Issue 3, 2021 · pp. 41–47 Read article
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Nitrogen Fertilizer Rates and Spacing on Yield Components of Pepper Capsicum annum L. at Bure District, North Western Ethiopia
Abstract: Hot pepper is an important spice and vegetable crop in Ethiopia, but its productivity is low due to poor agronomic practices including inappropriate nutrient supply and poor inter-row spacing management. The experiment was carried out in the field in the year 2019/20 to know the effect of the rates of N fertilizer and spacing on the yield-attributed factors of pepper. The experiment consisted of factorial combinations on four levels of …
Published in Journal of Catalyst & Catalysis · Vol. 9, Issue 3, 2022 · pp. 44–54 Read article
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A Combined Molecular Docking Analysis of The Phytochemicals of Ginkgo biloba against The Parkin Protein Target (Autoinhibited Parkin Catalytic Domain)
Abstract: This study's goal is to evaluate the specific therapeutic targets for Parkinson's disease (PDB ID: 4BM9) using molecular docking simulation and ADME analysis against bilobalide, quercetin, ginkgolide B, and protocatechuic acid (3,4-Dihydroxybenzoic acid). The Protein Data Base was used to extract theprotein's three-dimensional structure, and the PubChem database was used to retrieve the ligands. Using Auto-Dock Tools-1.5.7, a molecular docking simulation of the compounds was carried out. Since none of …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 1, 2023 · pp. 1–9 Read article
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Effect of Particle Size Mix Ratio of Adsorbent for AGO and PMS Adsorption: The Monitoring of Hydrocarbon Utilizing Bacteria in Water Media
Abstract: The effect of particle size mix ratio of clay and agro-based material of Plantain Ogoni Red (POR), Banana Native (BN), Banana Ogoni Red (BOR) and Plantain Agbagba 1 was monitored in AGO and PMS adsorption process based on formulated adsorbents. The characteristics of hydrocarbon utilizing bacteria was monitored in both salt and fresh wager media upon the effect of particle size and contaminants medium. Different particle size and contaminant medium. …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 3, 2023 · pp. 08–16 Read article
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Effect of Ground Granulated Blast Furnace Slag as Partial Cement Replacement on Compressive Strength of Concrete
Abstract: AbstractThe main objective of this research work is to determine the optimum replacement percentageof GGBS which can be suitably used. To fulfill the objective, various properties of concreteusing GGBS have been evaluated. Mix design has been arrived for M25 concrete. Fineness,specific gravity (cement and GGBS), normal consistency, initial and final setting time andcompressive strength of cement have been found out. Particle size distribution, bulking of fineaggregate, specific gravity, water absorption …
Published in Journal of Construction Engineering, Technology & Management · Vol. 7, Issue 3, 2017 · pp. 1–10 Read article