This paper presents the findings of an investigation on coconut shell ash (CSA) as admixture in cement paste and concrete. The CSA used was obtained by controlled burning of coconut shell in an incinerator to a temperature of between 600–650ºC for 3 hours, air cooled, sieved through 75μm sieve and characterized based on its oxides composition determined using X-ray Fluorescence (XRF) analytical method. The effects of CSA on cement paste were investigated with addition of 0, 2, 4, 6, 8 and...
Correlation and regression in this paper were employed as analytical tools to study the degree of relationship as well asthe nature and strength of the relationship between green concrete properties and percentage replacement of cementwith civil engineering materials. Pearson product-moment method and Spearman’s correlation coefficient wereextensively used to show how correlation analysis can be practically applied in green concrete research. Least squareregression line method for both line...
One of the most critical inputs to vegetable (fruits) production in semi-arid areas, dry season farming and nursery establishment is water. During the dry season or off season, the source of water for vegetable growing is from irrigation while in the wet season, rainfall is the source of water. Young vegetable seedlings in the nursery or in the field should be watered in the early morning or in the evening. Watering should be done before transplanting particularly in the evening. Over-wa...
In low oil price regimes, oil and gas companies explores several options to remain profitable in the short run. The traditional response has been to shelf all projects until the price of oil rebound or carryout workover operations, but this might not be the best option for these companies. This study discussed how Shell Petroleum Development Company significantly reduced the cost of its workover operations using effective planning and project management. This study then showed how the GE/McKi...
The goals of this research are to determine how the Nigeria oil and gas industry has impacted the actualization of the sustainable development goals and how the Nigeria oil and gas industry overcome its present challenges to achieve sustainability. This paper found out that Nigeria oil and gas industry has not significantly contributed to the actualization of the sustainable development goals and Nigeria is at danger of not meeting the 2030 deadline for their actualization. In fact, the oil a...
The goal of this paper is to determine the most suitable source of energy for the future between the Renewables and LNG. The paper found that the Renewables are the fastest growing energy source, followed by gas; and transporting gas as LNG is the fastest growing method of transporting gas. Furthermore, the paper found out that for large-scale deployment of the renewables, energy storage is vital, but the cost of storage is high, the material for storage are non-renewable, and there are geopo...
ABSTRACT Circular economy requires sustainable supply of raw materials to industries. Social and economic networks are needed in order to develop circular economies that would drive value chains in renewable resource processing from wastewater into renewable bioplastic products. Current plastic is non-biodegraded which can cause harm to our environment. A pilot scale investigation was carried-out so as to evaluate the feasibility of producing value-added bioplastic from wastewater treatme...
Quality control is a checking test to monitor and ensure the wastewater treatment plant (WWTP) is at optimum efficiency. The tests are usually carried out on samples collected from specific points or stations in the WWTP. The Influent sample, is collected after the fine screens. Aeration basin sludge, iscollected from the point of overflow of the aeration basin, before it is sent to the clarifier. Return Activated Sludge (RAS) sample, is collected from the sludge pumping station. Waste Ac...
Wastewater is made up largely of organic carbon, either in solution or as particulate matter. About 60% is in particulate form, consisting of proteins, amino acids, peptides, carbohydrate, fats and fatty acids. Wastewater treatment plant (WWTP) prevent potential waterborne disease outbreak. This is achieved by the active use of mechanical process and biological process of the treatment plant to treat and convert wastewater into clear effluent that meets specific standard. The effluent water...
The flight dynamicsof an Unmanned Aerial Vehicle(UAV)is the science ofitsorientation and control in three dimensions.The three primary orientations include: the Pitch, the Roll and the Yaw. Therear part of the tailplaneis known as the elevatorcontrol ofanUAVpitch (therotating around the transversal axis). Flight route deviations and flight altitude variations due to hash weather conditions such as shock waves or thunder storm and the wind speed/direction during flight greatly affect the pitch...
One of the advantages of automatic control system is its application to the regulation of internal combustion engines. An area of significance in fuel energy reduction and efficiency improvement is the control engine idling speed. This paper has presented a control system for improved transient response performance of a linearized engine idle speed model. In order to realize the aim of the work, nonlinear dynamics of engine idle speed are obtained and were later linearized. A proportional int...
Abstract—Drilling fluid is a mixture of chemicals used in the drilling operation and it is re-circulated within the well. It function as lubricating agents to keep the drilling tools in good condition, maintain the temperature and pressure, as well as prevent well damage. The drilling fluid may lost in circulation due to the pressure differences because of formation fractures; crevices within the formation. Lost Circulation Material (LCM) is substances that added into the drilling fluid fun...
Many studies are on-going to optimize the properties of composites, this is because composite have found application in different industries due to their advantage of light weight. Scientists have turned their attention to using natural occurring materials for the development of novel materials. Animal waste is playing an important part in this area of application as using it is not only providing benign environmental solution but solving engineering challenges. In this study, the effe...
Supreme likelihoods of fire disasters in buildings from consulted literatures includes: abnormal rise in temperature, gas leakages from gas cylinders and her accessories, and increasing concentration of smoke from burning materials. On this premise, three respective sensors were saddle with the responsibility of monitoring any anomalies from the aforementioned likelihoods of fire in market shops of which their presence above threshold possess a treat to lives and properties. These sen...
Abstract Vocational and Technical Education (VTE) is one of the manpower development programmes of study that is attracting the attention of various countries around the world. Numerous studies on Didactics have demonstrated the effectiveness of student centered methods and strategies to improve results in terms of knowledge, skills, attitudes and values in Technical and Vocational Education and Training (TVET). With the continuous advancement of technology, computer technology has infiltrate...