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1961 articles for “4” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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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
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Effect of Hooked-end Steel Fibre Incorporation in the Performance of Slag Based Geopolymeric Concrete Mixes
Abstract: In this study the efforts have been undertaken to evaluate the performance of slag based geopolymer concrete (GC) when hooked-end steel fibres have been incorporated in different percentages i.e. 0%, 0.5%, 1.0%, 1.5% and 2.0% to the mix. The alkaline activator used in this study was the dissolution of solid sodium hydroxide flakes in liquid state sodium silicate solution, dissolved in water. The compressive strength, split-tensile strength, shear strength and …
Published in Journal of Construction Engineering, Technology & Management · Vol. 10, Issue 2, 2020 · pp. 28–35 Read article
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Exploring Building Information Modeling
Abstract: A process which generate and manage digital presentation of functional characteristics of places is known as building information modeling (BIM). BIM is helpful to exchanged, mined a building or additional built asset. Nowadays for preparing plan, design operate and maintain infrastructure such as water, electricity, gas, roads, bridges, ports and tunnels, etc. BIM is commonly use. In this paper, we are trying to execute the work of BIM for 3D …
Published in Journal of Construction Engineering, Technology & Management · Vol. 7, Issue 2, 2017 · pp. 1–6 Read article
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Experimental Investigation on the Strength of Concrete with Partial Replacement of Cement using GGBS and Alccofine
Abstract: Cement is the most important ingredient of concrete. A large scale production of cement consumes large amount of energy and produce a large amount of carbon dioxide (CO2) gas which harmful to human as well as environmental and natural resources. So, to avoid the effect to use industrial waste productions as a supplementary cementitious material (SCM) in making concrete i.e. silica fumes, rice husk ash, fly ash, metakaolin, alccofine, ground …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 1, 2023 · pp. 35–43 Read article
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Investigation of Heat Transfer in Concentric Annuli with Perforated Inserts
Abstract: The increasing necessity for saving energy and material imposed by the diminishing world resources and environmental concerns have prompted the development of more effective heat-transfer equipment with improved heat-transfer rates. The hydrodynamic boundary layer acts as main resistance for the transfer of heat from tube surface to fluid or vice-versa and many researchers are trying to improve the convective heat transfer rate with inserts in tubes to break the boundary …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 1, 2018 · pp. 56–68 Read article
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Mathematical Modelling of Electromagnetic Induction Coil gun for Non-Lethal Self Defence Applications
Abstract: To take someone's life is often termed as the biggest slanders spiritually one can commit be it while protecting one's self from endangering acts. Non-lethal weapons provide us with an opportunity to come over this dilemma thereby providing a numbing effect to save from devastating consequences. The objective of this paper is to present a non-lethal portable induction coilgun that can potentially address security concerns. To serve the respect and …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 2, 2018 · pp. 66–73 Read article
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Experimental Investigations of Mass Flow Rate on Regression Rate of Hybrid Rocket
Abstract: A number of practical hybrid propulsion systems developed for booster and upper stage application,at different Centers across the globe. The regression rate of hybrid fuel plays an important role ondevelopment of viable hybrid propulsion system. In the present investigation an effort has been madeto study the regression rate behavior of PVC-DBP((C 2 H 3 Cl) n )-DBP(C 16 H 22 O 4 ) hybrid fuel burning inthe stream of gaseous …
Published in Journal of Experimental & Applied Mechanics · Vol. 12, Issue 2, 2021 · pp. 31–51 Read article
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Design and Development of a Multifunction FPGA-based Data Acquisition System using Nonlinear Duty-cycle Modulation Technique
Abstract: AbstractA new generation of DAQ based on duty-cycle modulation technique is presented. It describes the design and prototyping of a FPGA-based data acquisition and signal generation board using the duty-cycle modulation technique and with computer-based software interface. The system is built around the DE0-Nano development board that embeds an Altera cyclone IV FPGA in which a NIOS II processor running at 100 MHz has been instantiated. The conversion technique from …
Published in Journal of Electronic Design Technology · Vol. 10, Issue 3, 2019 · pp. 8–26 Read article
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A Novel High Gain Cavity Backed Micro Strip-Fed Circular Triangular Corner Fractal Antenna for UWB Applications
Abstract: In the current article, a novel micro strip-fed circular triangular corner fractal unidirectional antenna with high gain is proposed for ultra wideband (UWB) applications. This antenna consists of circular patch with triangular slot with three iterations. A prototype of antenna has been designed on FR4 substrate having dielectric constant 4.4 and thickness 1.6 mm. This reference antenna is then placed in a cavity made up of FR4 having thickness same …
Published in Journal of Electronic Design Technology · Vol. 6, Issue 1, 2015 · pp. 19–24 Read article
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Design of 6-Bit Two-step Flash ADC for High Speed and Low Power Applications
Abstract: In this paper, 6-bit two-step Flash ADC operated at the 2 GS/s is designed, with optimized performance for frequency domain applications. To get the best performance, the coarse convertor of 2-bit and the fine convertor of 4-bit are chosen. The comparator design is done with optimum power and area with two power supplies. Intermediate state accuracy increased by thermometer coded current steering DAC. The DNL and INL specifications are chosen …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 29–39 Read article
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Performance Analysis of 1-Bit Full Adder using GDI and CMOS Logic
Abstract: The adder is one of the most essential part in math processor, multiplier, and in various scientific applications. Full adder plays important role in multiplier architecture. In this paper a 1-bit full adder using GDI and CMOS logic has been implemented and comparative analysis has been done. The less delay and low power consumption is achieved for this implementation. This paper presents comparison of number of transistors have been used …
Published in Journal of Electronic Design Technology · Vol. 6, Issue 2, 2015 · pp. 18–22 Read article
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Techno-Economic Analysis of Fixed and Single Axis Tracking Systems Using NPV and IRR Methods
Abstract: A low power, low cost, high utility value photovoltaic power generating system has been designed and developed with an intention of catering to the needs of the rural population located in far flung villages or hilly regions where electricity supply is either unavailable or is erratic. The proposed solar photovoltaic system has been subjected to rigorous performance evaluation using the four widely used performance metrics namely, Energy Gain, Panel Efficiency, …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 10, Issue 3, 2020 · pp. 34–45 Read article
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Production of Biofuel (Biodiesel and Bioethanol):An economical and environmentally feasible way to the society
Abstract: In recent years, bio fuels growers have achieved significant enhancement in crop output and processing efficiencies and today the volume of bio fuels produced in a specific planted area is several times higher than it used to be as latest methodology and technical work to increase production of biofuel. In the sense of methodology, bio fuels are sub-divided into two large categories: substitute for diesel (biodiesel) and substitute for petroleum …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 11, Issue 2, 2021 · pp. 1–10 Read article
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Control System for Heat Generation in a Hybrid PV/T System
Abstract: The study analyzes the performance of a PV/T unit with a PCM attached to the rear side of the PV panel in direct contact. The unit works removing heat from the panel and using this heat for external applications. The PCM has a heat exchanger inserted to transfer heat removed from the PV panel and stored in the PCM to a water flow that circulates through the heat exchanger. The …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 13, Issue 1, 2023 · pp. 1–16 Read article