Vol 5 Issue 1 January 2017-March 2017

Abstract: This article is focused on the application of geophysical method for the preliminary assessment of soils contamination around Igwuruta and Eliozu dumpsites in Port Harcourt city. An assembly of geophysical tools was installed in the study locations. Basic components of the assembly include set of geo-electrical cables, four metal electrodes and a resistivity meter. Others were DC source (or battery cell), tape and hammer. Streams of electric currents were sent into subsurface while the resistances were measured in return. The resultant data obtained were processed with the aid of proprietary software (RES2DINV) into 2-D imagery or tomogram. These tomograms were characterized by diverse colored segments ranging from bluish colored zones to reddish-purple colored zones. The significance of these colored zones formed the basis for ERT interpretation. Evidence of pollutants leached into the soil geological strata for the two dumpsites were confirmed in the ERT as low resistivity zones, while those for chemical or landfill gases zones were in the high resistivity zones. However, the nature and concentrations of the pollutants could not be established from the tomograms, hence the need for confirmatory test methods for the dumpsites soils.

Keywords: pollutant, dumpsite soil, leachate plume, electrical resistivity tomogram, solid waste.

Title: Preliminary Assessment of the Extent of Contamination of Selected Dumpsites’ Soil in Port Harcourt Using Geophysical Method

Author: Achadu M. Abah, Obahiagbon, K.O, L.Uyigue

International Journal of Engineering Research and Reviews    

ISSN 2348-697X (Online)

Research Publish Journals

Abstract: It seems to be very amazing if we use Solar wind for future propulsion of Spacecrafts. This project deals with the application of Solar wind which is a possible source of momentum that might be usable for spacecraft propulsion. It could be utilized by creating an artificial magnetosphere around the spacecraft. The result is that the force acting on the spacecraft is maximum when no plasma is injected. The physical reason is that although injecting plasma makes the magnetosphere larger and increases the force acting on the magnetopause; most of the momentum is transferred to the escaping plasma. This is in contrast that because of the increased force acting on the magnetopause, injecting plasma would increase the net thrust on the spacecraft. Keywords: Magnetosphere, Magnetopause, Plasma, Propulsion. Title: Spacecraft Propulsion by Solar Radiation Author: ABHIMANYU SINGH RATHORE International Journal of Engineering Research and Reviews ISSN 2348-697X (Online) Research Publish Journals

Abstract: Solar dryer has been developed for drying agriculture products with aims for preservation of food. It takes the advantages of greenhouse effect which turns the sun irradiation energy into heat energy to drive moisture out of the products, and the addition advantage of using solar energy for solar dryers is that it comes without cost. However, the effectiveness of solar dryers is depending upon the available of the sunlight during the day which in turn is seasonal. The temperature inside the solar dryer is sensitive to weather conditions. The use of Phase Change Material (PCM) is not only to store and retain the heat during charging cycle, but also to maintain the suitable temperature inside dryer during discharging cycle for longer period of time after the sun is out in the evening. There are 2 key parameters related to the required performance of solar dryer which are the rate constant and the retaining time both during charge and discharge periods. Since is very sensitive to how the PCM used, therefore the aims of this are to investigate the suitable composition of PCM and the quantity of PCM used in the solar dryer to meet the performance targets. The mathematical modeling based on the first order equation developed is sufficient to determine the suitable of PCM in a small scale solar dyer to achieve overall performance targets. Keywords: solar dryer, Phase Change Material; PCM, charging/discharging period, retaining time, Mathematical modeling for PCM, the rate constant (k ). Title: Mathematical Modeling for Phase Change Materials in a Small Scale Solar Dryer Author: Supapad Malasai, Kanyarat Holasut International Journal of Engineering Research and Reviews ISSN 2348-697X (Online) Research Publish Journals

Abstract: In this study, kenaf core fibre KCF with size 0.25–1 mm, was successfully by treating with (CHMAC) as quaternization agent. The MKCF was characterised by Brunauer, Emmett and Teller (BET) analysis, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM), with pH = 6.5 and constant shaking rate of 150 rpm. Was developed to stimulate the adsorption of AR114 by MKCF under varying parameters such as pH, dosage, dye concentration and speed. In addition, isotherms and kinetics adsorption studies were estimated for determination of the equilibrium adsorption capacity and reactions dynamics; respectively on adsorption by modified kenaf core fibre was investigated. Results showed that the best dosage of MKCF was 0.1 g/100 mL, the maximum removal of AR114 Was 99.14 at 300C. The results also showed that the equilibrium data were represented by Freundlich isotherm with correlation coefficients R2= 0.8395 and the kinetic study followed the pseudo-second-order kinetic model with correlation coefficients R2= 0.9953 mg/L. Furthermore, the maximum adsorption capacity 238.1 mg/g. Adsorption through kenaf was found to be very effective for the removal of the Acid dyes. Keywords: Acid Red Dye, Modified Kenaf Center Fiber, Adsorption, Freundlich, Langmuir, Temkin. Title: Batch Adsorption Study for Removal Acid Red 114 Dye from Aqueous Solution by Using Kenaf Author: Maytham Kadhim Obaid, Luqman Chuah Abdullah, Intidhar Jabir Idan, Siti Nurul Ain Binti Md. Jamil, Dalia Sadiq Mahdi International Journal of Engineering Research and Reviews ISSN 2348-697X (Online) Research Publish Journals

Abstract: Construction projects by its complexity nature have an impeded risk of late completion and running over budget. UAE construction investors take decision based on financial variable of cost and return only without taking the risks or the total life cycle cost of the project into account. For this reason we have developed this paper to identify other factors and variables to be considered when taking decision of investment in construction sector in UAE Keywords: Construction Projects, Risk, Life Cycle Costing. Title: Risk Based Life Cycle Costing Evaluation of Construction Projects in United Arab Emirates (UAE) Author: Fakhreldin B. Eltyeb, Dr. Abdelgadir M. Mahmoud, Prof. Awaludin M. Shaharon International Journal of Engineering Research and Reviews ISSN 2348-697X (Online) Research Publish Journals

Abstract: Oil price volatility has sparked a lot of speculation in the market, forcing investors to criticize their investment decisions with hindsight. Simply put, volatility is a numbers game; one that applies statistics in the analysis of how returns disperse for a particular market index or security. Either variance in income generated from the same market index/security or standard deviation can be used to measure volatility. This paper targets to expound on the effect of oil price volatility on U.A.E construction projects. By analyzing the extent to which investment decisions in U.A.E’s construction industry have been affected by the almost unpredictable nature of oil prices, the paper seeks to shed some light on viable solutions that, when properly implemented, can help salvage the booming industry from complete annihilation. Keywords: Oil price volatility, U.A.E, construction industry. Title: Effect of Oil Price Volatility on Construction Projects in United Arab Emirates Author: Fakhreldin B. Eltyeb, Dr. Abdelgadir M. Mahmoud, Prof. Awaludin M. Shaharon International Journal of Engineering Research and Reviews ISSN 2348-697X (Online) Research Publish Journals

Abstract: The oil and gas production system requires energy in the form of pressure, and the choke plays an important role in controlling the flow rate. In this work, Nodal Analysis method was used to optimize oil production using bean size selection for two wells B40 and B50, respectively. PIPESIM was used to build the models for the two wells using the test production data acquired. For well B40, when there is bean-up from 0.2” to 0.8”, flow rate increases from 363.957STB/D to 2132.306STB/D at bottomhole and 359.535STB/D to 1890.4 71STB/D at wellhead nodes, respectively. For well B50, when there is bean-up from 0.2” to 0.8”, flow rate increases from 195.648STB/D to 4464.972STB/D at bottomhole and 500.005STB/D to 3870.941STB/D at wellhead nodes, respectively. This is evident in the plots whereby the operating point shifts repeatedly to the right as the bean size is increased successively. Finally, at the end of the study, the bean size for well B40 was re-selected from 0.25” (1/4) at a flow rate of 605.171STB/D to 0.28” (17.92/64) at a flow rate of 728.019STB/D. Similarly, for well B50, the initial bean size prior to optimization was 0.4” (25.6/64) and the flow rate was 1962.357STB/D. However, a bean-up to 0.5” (1/2) produced at a flow rate of 2882.492STB/D thus production optimization is achieved. Keywords: Optimization, Bean size, Flow rate, Wellhead pressure, Gas-oil ratio, Nodal Analysis. Title: Production Optimization Using Bean Size Selection for Niger Delta Oil Wells Author: Idongesit Effiong Essen, Dulu Appah, Mfon Godwill Udoaka International Journal of Engineering Research and Reviews ISSN 2348-697X (Online) Research Publish Journals

Abstract: Noise pollution due to aviation is the one of the contentious environmental issues associated with airport and aircraft operators. Although, there are many other noise sources present at the airport, aircraft noise is readily identifiable and tends to stand as annoyance for many people. The study of Chhatrapati Shivaji International (CSI) Airport, Mumbai which is situated in the heart of the city, has been conducted to have an overview of the current noise situation at the airport, by identifying and monitoring the various noise sources including aircraft and background noise within and outside the airport boundary. Keywords: Noise, Airport noise, aircraft, noise abatement, land use planning. Title: A Study on Noise Mapping & Modeling Author: Mr. Shailendra P. Joshi International Journal of Engineering Research and Reviews ISSN 2348-697X (Online) Research Publish Journals

Abstract: Tandem wing configuration is similar to a biplane, however in these aircrafts the wings are offset horizontally far enough that the centre of gravity falls between the two lifting surfaces. Because the wings are further apart than with the biplane, it minimizes the downwash effect on the second wing. This design provides with a higher lifting capacity than with a single wing, while not increasing the overall dimensions of the aircraft. The lift generated by the wings of these aircrafts depends greatly on the angle of attack at which the airfoils are attached to the fuselage. Through this project we are carrying out Computational Fluid Dynamics analysis of the flow over a tandem winged aircraft, in order to determine the angle of attack at which maximum lift is obtained. The two-dimensional analysis, using CFD, of tandem or staggered arranged airfoils of the canard and wing of an Eagle 150 aircraft is carried out in this study. The tests is carried out with tandem and staggered placement of the airfoils in order to determine the optimum position of the wing with respect to the canard and also to determine the lift coefficient at various angles of attack. ANSYS software was used to study the aerodynamic performance of a two-dimensional model the airfoils which was created using PROFILI software. Keywords: Biplane; Computational Fluid Dynamics; Tandem wing; 2D Analysis. Title: CFD ANALYSIS OF TANDEM WINGED AIRCRAFT Author: L.Hariramakrishnan, K.Nehru, V.Rajashree, S.Gowtham, R.Karthika International Journal of Engineering Research and Reviews ISSN 2348-697X (Online) Research Publish Journals