bluuebunny/crossref_metadata_2025_split huggingface dataset:
Gravimetric (Corrosion) Study of Carbonaceous Agro-Waste Inhibitor on the Al-Fe-Si alloy (AA8011) in aggressive Nitric (NO3
-) Environment
Authors: Fayomi J. , Bitire S.O , Popoola A.P.I. , Fayomi O.S.I. 
Published: April 2021

Abstract
The inhibition potential and adsorption properties of agro-waste eggshell (EGS) product on Al-Fe-Si alloy in 0.5 M HNO3 was examined in this novel work. The gravimetric weight-loss measurement was utilized to check the rate of corrosion attack in reference to the time of immersion and the potency of the EGS inhibitor. In this work, the mechanism of the inhibitor adsorption on the AA8011 alloy surface was as well checked to understand the degree of the adherence of the adsorbate to the surface of the metal. The results of the weight loss analysis revealed a reduction in the weight loss and the rate of corrosion in the presence of the green inhibitor. The efficiency of the EGS inhibitor increases with percentage rise in EGS content but decline with time progression, however, the 2 g EGS content maintains good efficiency of about 71.591% at the end of 168 hours. The best regression coefficient of R2 = 0.99088 was achieved from the Langmuir isotherm model and physical adsorption was confirmed from the evaluation of the adsorption free energy (ΔG°ads).
Electrochemical Corrosion Phenomenon and Prospect of Materials Selection in Curtailing the Challenges
Authors: Akpoborie J. , Fayomi O.S.I. , Agboola O. , Samuel O.D. , Oreko B.U. , Ayoola A.A 
Published: April 2021

Abstract
Corrosion evolution over time has caused severe damage to life; affects the economic, environmental, and mechanical aspects of materials services. Corrosion is an electrochemical reaction; it is a reaction that involves the movement of electrons from one place to another. Electrochemical reactions include both oxidation and reduction reactions; oxidation reactions increase the valence number of material by removing particles from the material, making it positively charged. In other ways, technological advancement has provided several attempts to understand this catastrophe, providing consistent mitigating measures and control toward attaining less cost. This overview study the electrochemical corrosion phenomena and the prospect of materials selection in curtailing the ranging challenges.
DNA as an Inhibitor for Corrosion Mitigation of Metallic Materials
Authors: Elewa R. , Fayomi O.S.I. , Joseph O.O. 
Published: April 2021

Abstract
Recently, the widespread of the applications of metallic materials in various spheres and fields or discipline in material science and engineering cannot be overemphasized. Alongside this great progression in the adoption of these material for use, the corrosion problems associated with these metals are also gradually becoming alarming which has birthed a call to action for immediate and sustainable efforts to salvage the problem. Several inhibitors have been developed in a bid to mitigate this corrosive ordeal facing a lot of industries, but inorganic inhibitors have some vital some shortcomings in form of poisonous substances which on the long run affects the surrounding. The pitfalls from non-organic inhibitors poised the drive of other researchers to develop a better, non-poisonous and organic inhibitive substances like Deoxyribonucleic Acid (DNA) that will mitigate corrosion without any negative residual effect on either the metallic materials or the environment. The DNA corrosion inhibitors have very good potential and economic owing to the source of extraction which is plant and animal waste which is in line with wealth generation prospect from waste product.
Review of electrodeposition perspectives towards anticorrosion mitigation of mild steel
Authors: Ajayi-Majebi J. , Abioye O.P , Fayomi O.S.I. , Inegbenebor A.O. 
Published: April 2021

Abstract
The study of corrosion is vital to reducing the overhead costs in the manufacturing industries. However, finding suitable application methods for prevention is a concern due to manufacturer specification and resource investment procedure. The coating is recognized as one of the foremost ways of applying resistance to corrosion damage. Electrodeposition is a unique technology because of its fine control of the chemical properties, mechanical strengthening behavior, and structural evolution over time. Thus, these overview studies discuss the possible protective coatings, corrosion as a major problem and its protection methods, electrodeposition process, and inherent characteristics. It intricacy of mild steel structural responses and its efficacy was also established.
A Review on Steel Connections and Structural Behavior
Authors: Oluwafemi J.O. , Ofuyatan O.M , Ede A.N , Oyebisi S.O , Bankole D.T , Babaremu K.O 
Published: April 2021

Abstract
The demand for the use of steel in the construction industry has been on the increase over the years due to its several advantages over several other construction materials. Some of these advantages are light weight, ease of constructability and durability. In the constructability of a steel structure, the three major connection types that have been used in steel structure construction are the riveted connection, bolted connection and the welded connection and the type of connection employed in a steel structure has been seen to have a great influence on the steel structural behavior and the condition for operation. Hence, the condition of service and acceptable behavior of steel structure should guide the choice of connection to be employed in any steel structure. To this end, this paper reviews connections types and the structural behavior.
Estimation of EMF Parameters From Distrbution Transformers and Their Impacts on Selected Health Indicators of Building Residents: Case Study of Ejigbo Environs, Isolo, Lagos State, Nigeria
Authors: Adekunle A. , Ugonna M.C , Olaifa O.A , Olumide Omojola O. 
Published: April 2021

Abstract
This research work is directed at studying the consequences of exposing industrial building inhabitants to electromagnetic radiation from distribution transformers. The study considered 310 participants with 124 men and 186 women, with age range between 5 and 70 years old. This research was carried out in ten industrial buildings in Isolo, Lagos State. Measurement of health parameters were taken before and after participants were exposed to electromagnetic radiations. The health parameters considered are: Ear temperature, blood oxygen saturation, heart pulse rate, arterial blood pressure (diastolic and systolic), echocardiography, complete blood count and colonoscopy. Radiation tests were conducted on the people thrice (9:30 – 10:30) a.m. and (3:30 – 4:30) p.m. before and after exposure to radiation. These measurements were recorded inside the buildings considered. The radiation parameters considered are: Power density, electric flux density, electric field, magnetic field strength and magnetic flux density. Housessories limited recorded the highest power flux density (0.89 μW/m2) while Top highflyer secondary school the lowest (0.368 μW/m2). The high magnitude obtained for Housessories is due to the fact that it was located just 8m from the transformer while the Top highflyer secondary school was located at a distance of 140m from the considered transformer. The results also indicate that the estimated values of power flux density were within minor risk limit 0.1 μW/m2- 10 μW/m2. The effect of electromagnetic radiation on participant’s health resulted in increased ear temperature, heart pulse rate, arterial blood pressure (systolic and diastolic) while blood oxygen saturation and echocardiography were decreased. Complete blood count and colonoscopy produced no reactions. The female employees compared to their male counterparts experienced more health hazards.
Modelling and simulation of motor vehicle suspension system
Authors: Emagbetere Eyere , Oghenekovwo Peter A. , Obinabo Christabel C. , Aworinde Abraham K. , Ishola Felix A. , Kilanko O. 
Published: April 2021

Abstract
In this work, using a quarter-car model was adopted, the equations of motion were derived for a passive and then the sky-hook semi-active suspension systems. The derived differential equations, solved using the Dormand-Prince pair numerical formula, was then used to simulate values of displacements as affected by damping coefficients and the sky-hook constant. The simulated results showed that the maximum amplitude of the sprung mass, which is linked to ride discomfort, increases while those of unsprung masses, which affects the road holding ability, decreases with increasing depth of pothole. Furthermore, displacements for both sprung and unsprung masses varied directly with damping coefficient. Finally, as the sky-hook constant of the semi active system model increases, values of amplitudes of unsprung masses decreases while those of sprung masses increases. It was, thus, shown that the vertical displacements of vehicle bodies and wheels are dependent on the depth of potholes, damping coefficient and sky-hook constant, and that the sky-hook semi-active suspension system model gave a better result compared to the passive suspension system. Therefore, by applying the sky-hook control principle, the desired road comfort of passengers can be achieved as well as reduced rate of car damage and cost of maintenance.
Comparative analysis of chatter in micro end milling operations
Authors: Busuyi Omodaratan , Ogunmola Bayo Y. , Obafemi Olatunji O. , Ishola Felix , Adedeji Paul A. , Aworinde Abraham K. 
Published: April 2021

Abstract
The advancement in microfabrication in pursuit of miniaturization is cutting a dynamic role for micro-milling. Micro-milling is a fast and cost-efficient threedimensional fabrication method with the ability to achieve good accuracy, low surface roughness and extraordinary material removal rate (MRR) compared to some other micro manufacturing processes. Given the need for components with high dimensional integrity, identification of appropriate machining conditions is very vital to getting good surface finish. It is also required to couple different complex dynamics which are associated with this machining technique. Chatter during milling and micro-milling process bring adverse effects in surface quality, dimensional accuracy and in tool life. There is need for versatile modelling of micro end-milling dynamics in order to understand how chatter affects the micro end milling operation and to advance the synthetic application of several chatter stability parameters to overcome the limitation imposed by the single chatter stability criterion. This study performs a linear and non-linear analysis of chatter in micro end milling based on the major influential parameters. In addition, a detailed time domain simulation for micro end milling was performed to predict the force a displacement resulting from variable cutter geometries. This dynamic simulation results have significant impact on the actual micro milling process towards the manufacturing of miniaturized parts.
Rural Household Space Cooling and Lighting through a Solar Power-based Electric Supply System
Authors: Awelewa A.A. , Okoma C. , Popoola O.M. , Olajube A.A. , Samuel I.A. 
Published: April 2021

Abstract
Quite a number of households in the world still lack electricity, especially in the sub-Saharan African continent. However, the abundance of solar irradiation in tropical Africa can be advantageously exploited to serve the inhabitants in this region, particularly the extremely low-income earners who not only have access to very inadequate power supply but also experience much discomfort in terms of poor ventilation and heat-triggered infections. This paper focuses on developing a small household-sized solar power-based electric energy supply system together with a temperature control circuit to power a direct current (DC) fan, and a light-regulating circuit to control LED lamps—with additional features such as a digital clock, a remote control, and mobile phone charging units. The system also has a provision for power supply through the mains (whenever it is available). The overall intent is to provide the rural dwellers with a cost-effective way of powering essential devices for basic economic living. This affordable solution is designed, simulated, and constructed to have hardware and software sections supported by various components and devices such as Arduino Mega, Lm35 sensor, RF transceivers, diodes, transistors, regulators, batteries, lamps, a DC fan, etc. The sensor senses room temperature, which is compared with the reference temperature of 25°C programmed on the Arduino microcontroller. When the temperature is less than 25°C, the fan remains stationary but when the temperature is higher than the reference value, the fan begins to run. As the temperature rises further, the speed of the fan increases to maintain adequate ventilation.
Development and Performance Evaluation of a Simple Batch Reactor for Leaching of Potassium Ash
Authors: Adeodu A. O. , Emmanuel A. A. , Daniyan I. A , Bello K. A 
Published: April 2021

Abstract
Leaching is ubiquitously used operation for extracting a substance from a solid matrix through interaction between the solid matrix and liquid. Most batch reactors with fairly advanced sophistication are very costly while the less costly ones are of low performance and have quality challenge. The aim of this paper is to develop a simple batch reactor that uses continuous stirred action to leach caustic potash from potassium ash derived from cocoa pod husk. The batch reactor is made up of a hopper for the passage of the feed to the cylindrical vat, variable speed motorized stirrer, filter mesh, basket filter, heating/cooling system, temperature controller, temperature sensor attached to the heating/cooling system. The design has it novelty by the incorporation of temperature controller and sensor to the heating/cooling system. The criteria for the materials selection of the design were strength, corrosion resistance, machinability and economic value. The consideration of the design was based on existing machine design theories. The performance assessment showed that the reactor is capable of leaching caustic potash from potassium ash derived from cocoa pod husk on the basis of 1 Tonne per day. It was discovered that there is a direct relationship between leaching time and mass of caustic potash extracted and an inverse relationship between the leaching time and mass of sludge. At a leaching time of 30 minutes, the mass of the potash leached was 45kg and the mass of sludge was 30kg, whereas, at a time of 45minutes, the mass of caustic potash increased to 75kg and the mass of the sludge decreased to 25kg. From the evaluation, the efficiency of the machine is 74.14%. The development of a 1ton/day potassium ash leaching reactor was achieved. The machine is useful for processing of caustic potash in reasonable time and quality.
Advanced Manufacturing Technology in Nigeria: A Review
Authors: Akintayo T. C. , Akinlabi S. A. , Okokpujie I. P. , Ishola F. , Akinlabi E. T. 
Published: April 2021

Abstract
This paper reviews the present state of the act of advanced manufacturing technology of the manufacturing in the Nigerian economy. Furthermore, this review also carried out a study on the current trend of an advanced level of operation of the manufacturing industry in Nigeria. In this study, some key changelings are identified, and possible solutions are recommended on why the innovative technology is yet to be embraced and implemented despite the vast and fantastic contribution it could impact on the socio, economic, and political development of the nation. This study will assist the Government of Nigeria to make a move in developing strategic plans on replacing the local manufacturing process to the advanced manufacturing technology (AMT) to strengthen the economy of the nation further.
Development of a Small Hydropower Plant (SHP); A Review Study of Erin-Ijesa Water Fall, Erin-ijesa, Osun State, Nigeria
Authors: Odunfa K.M. , Rosiji Y.O. , Owoseni O. D. 
Published: April 2021

Abstract
Energy demand has been on the increase globally due to the increase in population, urbanization and industrialization. In developing countries, while the rate of energy consumption is increasing, supply which is usually produced from fossil fuels is depleting resulting in energy shortage and pollution. Hence the need to explore alternative or renewable sources of energy to meet current and future energy demand. This paper examines the potential of Erin-Ijesa waterfall as a possible source of power supply to Erin-Ijesa community. The erratic supply of electricity in Nigeria, Erin-Ijesa community inclusive makes it paramount to consider generating electricity from the waterfall. Towards achieving this, the waterfalls data were obtained from Osun State Water Corporation Board Secretariat in Osogbo and a survey was conducted on site at Erin-Ijesa water falls where the flow and the head parameters were collected. The falls gives gross head of 200m with water flow rate of 0.85m3/s. These two parameters were used in the standard hydroelectric power (SHP) equations. The results obtained gave a theoretical power of 1.4MW, compared with the required power consumption of 1MW by the inhabitants of Erin-Ijesa community. A deviation of +0.4 from the required power consumption. It was also observed that the generated power from the falls will be sufficient to supply the entire community. The viability of small hydropower plant and the reduction in design time were established. Small hydropower plant will perform well if explored and executed in Erin-Ijesa, and in Nigeria at large.
Physicochemical Properties of Wood Sawdust: A Preliminary Study
Authors: Oyebanji J.A. , Okekunle P.O. , Oyedepo S.O. , Fayomi O. S. I. 
Published: April 2021

Abstract
In this study, the physicochemical properties such as proximate, ultimate analysis and heating value of five wood species sawdust (WSD) samples have been determined. The Higher Heating Values (HHVs) of the samples were estimated as functions of fixed carbon (FC) and volatile matter (VM), and were also calculated from an elemental composition-based correlation equation. Results showed the ranges of VM and FC were 74.95 – 75.74% and 14.25 – 14.80%, respectively. The High Heating Values (HHV) of Iroko, West African Entada, Ebony, African cam and Rough chaff, according to ultimate analysis-based correlation equation, were found to be 18.85, 18.77, 18.75, 18.55 and 18.52 MJ kg-1, respectively while according to proximate analysis-based correlation equation, were 18.41, 18.53, 18.43, 18.50 and 18.14 MJ kg-1. The high percentage of VM and the value range of FC resulted in appreciable HHVs for the samples. It can be concluded that woody biomass residues are good sources of bio-fuels for sustainable development.
Overview Impacts of Heat Treatment Techniques on Grain Structures of a Steel
Authors: Afolalu S. A. , Salawu E.Y. , Joseph O. O. , Oladipupo S. , Emetere M. E. , Ongbali S.O. , Abioye A.A. , Akinlabi S.A 
Published: April 2021

Abstract
In this study, various techniques used in the modification of the grain structure of steel were considered. It was found that different heat treatment techniques cause changes in the grain structure of steel and subsequent improvement in the mechanical properties of the material. More so, the bimodal grain size, as well as the lamellar structure in steel, will lead to work hardening effect and improved ductility of the steel. The carburization technique also improves the mechanical properties such as hardenability, compressibility, tensile strength, and toughness. While nitriding effects will lead to excellent tribocorrosion performance. More importantly, these heat treatment techniques help to improve the resistance against cyclic load in different application environments. Thus, failures resulting from crack propagation and other failure modes are prevented. In this regard, structural failures are prevented by grain structure modification using heat techniques.
Evaluation of Factors influencing the decision to utilizing ICT-based tools in Construction Project and Planning
Authors: Pedro O. , Afolabi A.O. , Abba T. , Ajibola P. 
Published: April 2021

Abstract
Construction planning represents one of the most critical activities in the construction process. This is because it can help predict the failure or success of a construction project. It can also influence the construction project performance in terms of time, cost, and project quality. However, with the advent of information and communication technologies (ICTs) tools in the construction sector, some construction professionals still utilize manual-based tools. Therefore, this study was aimed at evaluating the factors influencing the decision to use ICT based tools in construction planning. The empirical study utilized a questionnaire instrument to sample 70 construction professionals regarding the subject matter. The data collected was analyzed using compare mean scores, principal factor analysis, and categorical regression. The study showed that level of computer literacy, availability of the ICT tool, and performance expectations played an essential role in the decision to utilize ICT-based tools in construction planning. These decision factors were further categorized into Comparative advantage factors, Operational factors, and Individuals/Project factors. The study showed that there were significant factors that can influence the decision to utilized ICT-based tools. These crucial factors include performance expectancy and facilitating conditions. The study recommended the need to increase access to construction planning software and provide necessary ICT infrastructure to facilitate the usage of available ICT-based tools.
Digital Technologies and Construction Planning
Authors: Abba T. , Afolabi A. O. , Ajibola P. , Olanrewaju P. 
Published: April 2021

Abstract
The construction industry is very vital as it helps provide the necessary buildings and supporting civil infrastructure. However, the problems of productivity, poor planning and poor coordination has not allowed it to maximize its full potential. The use of digitalized solutions in coordinating and planning construction activities can help resolve these challenges. Therefore, the study was aimed at investigating the digital technologies available to construction professionals during construction planning. The study utilized the data instrument of a well-structured questionnaire. A total of 110 construction professional took part in the survey research. The study showed that Microsoft Project, Primavera and Web-based Project Management System are the most used digital technologies in construction planning. Construction professionals identified the benefits of improved quality, better record keeping, and time saving benefits in the use of digital technologies for construction planning. The study showed that there was statistically significant difference in the benefits such as reduction in construction errors, increased flexibility, and access to information in real time. It recommended that construction professionals should increase investment in innovative digital solutions in order to address the challenges facing the construction industry.
A Simplified Design for Biodiesel Production
Authors: Ayoola A.A. , Alagbe E.E. , Agboola O. , Ayeni O.A. , Adeyemi G.A. , Nnabuko D. , Makinwa T.A. 
Published: April 2021

Abstract
In this research work, a simple design for the production of 1kg biodiesel involving two stage esterification-transesterification process, with the use of waste soybean oil (WSO) and NaOH catalyst was considered. CHEMCAD 7.1.2 software was used for the design operation which revealed that four (4) pumps, four (4) heaters, two (2) mixers, one (1) drying equipment and two (2) reactors were involved. Also, the production process design revealed that 0.0513kg/hr of methanol and 0.1800kg/hr of 0.1M H2SO4 were required during the esterification process. While 0.6921kg/hr of methanol, 0.9870kg/hr of WSO as well as 0.1934kg/hr of NaOH catalyst were needed for the transesterification process. The simplicity of the design and high purity level of the biodiesel produced adjudged the design operation good.