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The signing author(s) (and, in editor@gnpublication.org (Virender Singh) info@gnpublication.org (Rajbir Singh) Thu, 04 Jul 2019 19:28:18 +0000 OJS 3.1.2.0 http://blogs.law.harvard.edu/tech/rss 60 KEY FACTORS THAT LED TO THE DERAILMENT OF THE AJAOKUTA STEEL PROJECT https://gnpublication.org/index.php/mce/article/view/1008 <p>A review into the factors that militated against the success of the Ajaokuta Steel Project in Nigeria is reported . The Acts setting up the Iron and Steel Industry, the Chronological development in this Sector and the research publications of scholars in this Sector were reviewed. Several factors as identified by these scholars as negating the success of the Ajaokuta Project were noted. Against the background of the body of knowledge inherent and available in these reports, the Key Factors that led to the derailment of the Ajaokuta Steel Project were identified.</p> SUNDAY OKEREKEHE OKPIGHE, CHARLES C. ALAJEMBA Copyright (c) 2019 http://creativecommons.org/licenses/by-nc-nd/4.0 https://gnpublication.org/index.php/mce/article/view/1008 Thu, 30 Jun 2016 00:00:00 +0000 Energy efficient room air conditioners – best available technology https://gnpublication.org/index.php/mce/article/view/1009 <p>More than 5 million room air conditioners (ACs) are sold per year in Europe, 35 million in India. Most air conditioners combine heating and cooling, and sales are expected to grow further. Total annual electricity consumption by air conditioners in Europe is estimated at more than 40 TWh, in India at 200 TWh. The most efficient ACs are split models with a variable frequency drive (VFD). Market shares of variable speed ACs are on the rise both in Europe and in India. They are more efficient at part load conditions than fixed speed (on/off) appliances and can keep the requested room temperature more constant. In India, the efficiency indicator for variable speed ACs (SEER / HSPF) does include part load conditions, while in Europe a part load measurement standard is actually in preparation. The implementation of seasonal efficiency indicators, strict minimum efficiency requirements and an effective energy label is key for the promotion of high efficiency air conditioners. In India, the implementation of MEPS and an energy label for variable speed air conditioners triggered a significant increase in market share and efficiency. A Indian high efficiency AC was tested according to four different measurement standards (European current and future, Indian and US). Results show that the best available technology (BAT) on the European market is comparable to the one in India. Very high SEER results according to the future European standard raise the expectation that several ACs will already reach the A+++ classes of the new energy label.</p> Rajneesh Kaushik Copyright (c) https://gnpublication.org/index.php/mce/article/view/1009 Thu, 30 Jun 2016 00:00:00 +0000 Behaviour of shear stress of plate girders with corrugated webs https://gnpublication.org/index.php/mce/article/view/1010 <p>This paper presents analytical studies using Minimum Potential Energy Method to determine critical shear stress of local and global buckling of plate girder with corrugated webs. The elastic interactive shear buckling stress of corrugated steel web is calculated by all possible failure criteria (steel yielding, local and global buckling stresses). The results are compared with Finite element method (FEM) using ANSYS. It found that the proposed equations are a good agreement with the results FE.</p> Prof.Dr:S.A.Tohamy, Ass.Prof.Dr:A.B.Saddek, Eng: Asmaa.Y.Hamed Copyright (c) https://gnpublication.org/index.php/mce/article/view/1010 Thu, 30 Jun 2016 00:00:00 +0000 Influence of Blast Furnace Slag and Fly Ash on Strength Properties of Clayey Soil: A Comparative Study https://gnpublication.org/index.php/mce/article/view/1011 <p>Soil stabilization is a major problem in construction engineering and the researches are effectively using rapidly generating industrial wastes. This present experimental work describes about the stability of clayey soil with Blast furnace slag and Rice husk ash individually by using Lime. The main aim is to minimize the industrial waste generated by industry. The cost of stabilization by normally used common techniques has become costlier day by day such as cement, lime etc. So replacement of natural soils, aggregates with industrial by product is extremely desirable. This also reduces environmental hazards. In this study the unconfined compressive strength of clayey soil was studied by using Blast furnace slag and Rice husk ash. Lime was also mixed with both Blast furnace slag and Rice husk ash. In the starting of the study lime was optimized and the optimized amount of lime was found to be 4%. It was determined by performing unconfined compressive strength test and adopting the curing period of 7 days. Then this optimum amount was used for further study with Blast Furnace Slag and RHA on clayey soil for determining the unconfined compressive strength for both materials separately and using fixed amount of lime. Various percentages of Blast Furnace Slag and Rice Husk Ash were 10%, 20%, 30%, 40% and 50%. The unconfined compressive strength was found to be maximum at 10% RHA,4% lime and 86% of soil.</p> Amanpreet Tangri , Jagseer Singh Copyright (c) https://gnpublication.org/index.php/mce/article/view/1011 Thu, 30 Jun 2016 00:00:00 +0000