bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efficacy of Corrosion phenomena, challenges and control in steel industry: An overview
Authors: Anwo A.B , Ajanaku K.O. , Fayomi O.S.I , Olanrewaju A. 
Published: December 2019

AbstractThe mitigation of corrosion is a major problem for many industries all over the world as it is costly to maintain metals especially in all energy sectors. There are different methods been used such as painting, coating and galvanizing; but, all these solutions are relatively expensive and cause harmful effect to the environment. it is pertinent to develop and apply emerging technology that will yield high resistance to corrosion, as a way of controlling corrosion in order to reduce corrosion cost, lower the risk of failure, accidents and extend the useful lives of equipment and building. This foster the search of natural plants with green inhibitors which are eco-friendly and relatively inexpensive. This paper investigates the corrosion mechanism process and possible mitigation in steel application.
Prediction of Early Age Strength of Concrete Using Statistical Method
Authors: Ogbodo M. C. , Ibigbani I. E. , Akpabot A. I. 
Published: December 2019

Abstract
This research work presents the use of statistical method (regression analysis) to predict early age strength of concrete. Freshly prepared concrete samples were poured into cube moulds and exposed to pond curing for 7 and 14 days. NDT was carried out using Schmidt rebound hammer before subjecting the concrete cubes to DT method using compression machine. Mathematical models were developed to obtain the early age strength of concrete for different days. From the results, concrete cured for 14 days had higher strength values than those cured for 7 days. Also, the rebound hammer in the horizontal position yields a better representation of compressive strength than when placed vertically downwards. The cubic regression (0.0198) analysis is best for the prediction of the concrete strength for the 14 days curing.
Investigation of the Catalytic Liquid System Ratio on the Strength Performance of Geopolymer Concrete
Authors: Oyebisi Solomon , Ede Anthony , Olutoge Festus , Igba Tobit , Oluwafemi John , Ajao Adekunle 
Published: December 2019

Abstract
This study assessed the effects of the varying ratio of alkaline activators on the short-term mechanical property of slag-based geopolymer concrete (GPC) incorporated with corncob ash (CCA). Consequently, the study harnessed the waste products, eco-friendly and low-carbon footprint materials, ground granulated blast furnace slag (GGBFS) and corncob ash (CCA) as binding agents in a bid to design and develop a sustainable product. Moreover, sodium hydroxide (NaOH) solution and sodium silicate (Na2SiO3) gel were used as a catalytic liquid system (CLS) for the activation of the concrete products at the varying ratio of 1.5: 1, 2: 1, 2.5: 1 and 3: 1 for Na2SiO3 gel: NaOH solution respectively. Furthermore, GGBFS was replaced by CCA in 20, 40, 60, 80, and 100% volume using grade 30 MPa concrete (M 30) as a mix design proportion. The mix was activated with 14 molar concentrations of CLS. Subsequently, the concrete samples were cured under the ambient conditions and tested for compressive strength at 7, 28, 56 and 90 days. The experimental finding revealed that the optimum strength performance of slag-based GPC incorporated with CCA is achieved at a ratio of 2.5: 1 for Na2SiO3 gel: NaOH solution respectively when compared with 1.5: 1, 2: 1 and 3: 1 for the concrete. Therefore, the strength performance of GPC depends on the varying ratio of alkaline liquid and must be properly experimented to ascertain its best performance on the strength properties of GPC.
Adsorption assessment of the inhibitive effect of Crateva adansonii on low carbon steel in acidic medium
Authors: Anwo A.B , Ajanaku K.O. , Akinsiku A.A. , Fayomi O.S.I , Olanrewaju A. , Ajanaku C.O 
Published: December 2019

AbstractThis paper outlines the unique role ofCrateva adansonii(CA) leaf extract on low carbon steel in corrosive media. The defensive ability ofCrateva adansoniiextract was evaluated by gravimetric and gasometric techniques. The result of the experiment indicated that extract ofCrateva adansoniiexhibit perfectly well on the steel due photochemical species containing in the inhibitive extract thereby blocking both the anodic and cathodic site. The mixed Inhibitive effect ofCrateva adansoniiwere investigated by the kinetic state. The adsorption studies of CA leaf extract obeyed the Langmuir, Freundlich, temkin isotherm but best fitted into Langmuir adsorption isotherm which characterised by physisorption. The range of Eavalues (from 46.09 kJ/mol to 60.58 kJ / mol) in the presence of the extract being higher than the free solution. Which suggests strong physical adsorption (physisorption).
Production of Adhesive from Cassava Starch
Authors: Ayoola A.A. , Fayomi O.S.I. , Akande I.G. , Adeeyo O.A. , Obanla O.R. , Abatan O.G. , Babatunde D.E. , Olawepo V.A. , Fagbiele O.O. , Olomo V.D. 
Published: December 2019

Abstract
The research work investigated the production of adhesive from cassava starch. Cassava tubers were processed into starch-based adhesives, using two different gelatinization enhancers (that is HCl and NaOH) which were introduced separately. The adhesives were produced by considering two varied process parameters, namely percentage weight of borax in starch solution (8 – 20%) and reaction temperature (65 – 85°C). Comparative analysis of the adhesive obtained (using HCl and NaOH as gelatinization enhancers) include the determination of its bond strength, viscosity, drying time, pH and density. As the borax weight percent increases up to 14 % and reaction temperature reduces (using NaOH) the drying time increases, while the drying time reduces as both the borax weight percent and temperature reduce (using HCl). The results of the adhesive physical properties fall within the standard range for each of the properties and this implied that the adhesive produced was of high quality.
Monte Carlo Method of Shrinking Direction on Rectangular Slab of Fixed Boundary Condition
Authors: Udoye N. E. , Dare A. A. , Fayomi O. S. I. , Banjo S. O. 
Published: December 2019

Abstract
The study of heat transfer is crucial for its proper implementation in engineering design process. The Shrinking Boundary Monte Carlo Method was applied to evaluate temperature distribution in a Spiral, vertically up and vertically down running direction. The outcome was equated to normal Monte Carlo Method. The results revealed that increasing the size of the rectangular slab will increase the running time to compute temperature distribution. In a given direction of running, it has different temperature distribution for the different sizes of the slab. The computational run time for a rectangular slab in a portrait shape is greater than rectangular slab in a landscape pattern. The study proved that the average of the run time for various direction of movement indicates that spiral is shorter. It is the best ways of computing temperature dispersal in a rectangular slab of fixed boundary condition. The utilization of the shrinking boundary to analyse heat transfer was successful.
Predicting the Quantity of Municipal Solid Waste Required for Power Generation Using Power Plant Design Parameters
Authors: Ibikunle R. A , Titiladunayo I.F , Uguru-Okorie D. C , Osueke C.O , Olayanju A 
Published: December 2019

Abstract
In energy recovery technology, via municipal solid waste (MSW) as an energy resource; the capacity of the power plant required can be designed, if the potentials of the heat and electrical energy of the waste to be combusted has been established. Conversely, in this research, the amount of power potential of the waste required as fuel, is determined through the design for the capacity of the steam power plant that will utilize municipal solid waste as an energy resource. The capacity of the power plant is designed, using single reheat Rankine cycle. The pressure and temperature selected for the design of the boiler is 30 bar and 400 °C, the pressure at the reheat tube is 6 bar, and the pressure at the condenser is 0.032 bar. The heat supplied to the boiler is calculated to be 3639.2 kJ/kg, the total work-output of the turbine is 1451.4 kJ/kg and the heat rejected at the condenser is 2187.6 kJ/kg. The quantity of MSW required is predicted to be 418 MJ/kg based on the calorific value of 20 MJ/kg, and its heat energy and electrical power potentials is predicted to be 2.3 GWh and 29 MW respectively while the grid to power is 20 MW.
A Systematic Mapping Study of Cloud-native Application Design and Engineering
Authors: Odun-Ayo Isaac , Goddy-Worlu Rowland , Ajayi Lydia , Edosomwan Boma , Okezie Fiona 
Published: December 2019

Abstract
Cloud computing is a desirable paradigm that is providing services to users in a convenient manner and ensuring that Cloud service providers have value for their infrastructure. Applications designed to run explicitly on the Cloud are usually referred to as Cloud-native applications. Determining a research focus in a particular field of study is sometimes challenging. A systematic mapping study gives an insight into the research level that is being conducted in any field of interest. The results generated from such study are presented using a map. The method used in this study was analyzing three facets categories namely, topics, research and contribution. Topics were retrieved from primary studies, while type of research such as evaluation and contribution such as tool, were used in the analysis. The objective of this study is to conduct a systematic mapping study of Cloud-native applications designs and engineering. This will provide an insight into the frequency of work that has been done in cloud-native applications area. The results showed that from publications relating to security in the field of metric (1.94%), more articles in the topic of application in terms of tool (13.59%), more work done on architecture in terms of model (15.53%), more papers published on Cloud migration in the area of method (10.68%). Furthermore, 11.82% publications were identified on applications in terms of evaluation research, more publication on implementation in the area of validation research (1.82%), more publications on implementation in solution research (6.36%), more publications on security and application with respect to philosophical research (1.82%) and more work done on applications in terms of experience research (6.36%). From the study, several gaps were identified which would be beneficial to researchers, practitioners and providers.
Evolution of surface roughness and mechanical properties of Sputtered Aluminum thin films
Authors: Mwema F.M. , Akinlabi E.T. , Oladijo O.P. 
Published: December 2019

Abstract
In this work, aluminum thin films were sputtered on steel substrates at a varying substrate temperature ranging between 40 and 100 degrees Celsius. The films were characterized for microstructure by field emission scanning electron microscope, topography by atomic force microscope, mechanical properties by nanoindentation and the results related to the wear behavior of the films under very high sliding load of 30 N. The mechanism of failure of such films were observed and the relationship between the substrate temperature and sliding failure discussed. The study is important in understanding the failure mechanisms and improvement of the surface properties of sputtered aluminum thin films.
Reliability Comparison of Schmidt Rebound Hammer as a Non-Destructive Test with Compressive Strength Tests for different Concrete Mix
Authors: Atoyebi O. D. , Ayanrinde O. P. , Oluwafemi J. 
Published: December 2019

Abstract
One of the most important concrete properties for structural concrete design or redesign is the compressive strength, it gives information on the characteristics of concrete. This strength measure is obtained through standardized crushing tests on cast cubes, the cubes are produced alongside the construction of concrete elements on site however they are not available for strength testing of existing buildings henc3e the need for non-destructive test methods. Schmidt’s Rebound Hammer is a nondestructive test which is used to assess the compressive strength of concrete using rebound index. Surface hardness test was done on different concrete mix and compared with cube compressive strength tests. The changes in one variable explained by the change in a related variable as given by the R-squared are 93.79%, 99.42%, 86.8%, 1% and 98.5% for Mix 1, 2, 3, 4 and 5 respectively. It is noted that for proper result from non-destructive tests, more than one should be implored and the model calibration should be based on actual compressive strength.
Polyhydroxyalkanoate: a biodegradable polymer (a mini review)
Authors: Akinmulewo A. B. , Nwinyi O. C. 
Published: December 2019

Abstract
The current synthetic plastic menace has driven researchers to sort sustainable alternatives. Polyhydroxyalkanoate (PHA) has been proven to be sustainable, biodegradable, biocompatible and hence could serve as suitable alternative. PHAs are biodegradable polyester produced by microorganisms that can be produced from renewable substrates such as starch and plant oils. These biopolyesters are accumulated in the intracellular granules and serve as carbon reserve for bacteria. Current studies show that there exists about 150 different monomers of PHA with shared properties similar to synthetic plastics which makes their application wide. This review is focused on giving a background study on polyhydroxyalkanoate, with special considerations on their physicochemical properties, its applications, the pathways that leads to its synthesis and the various applications.
Extraction of oil from selected plants using Response Surface Methodology [RSM]
Authors: Ojewumi M.E. , Oyekunle D.T. , Ekanem G.P , Obanla O.R. , Owolabi O.M. 
Published: December 2019

Abstract
This study involves the extraction of oil from three sources: orange peel, guava leaves, and cassia fistula leaves using Soxhlet apparatus. The variables considered in this study were time of extraction and sample weight. Minitab statistical software was used to randomize the runs. The combination of operating parameters that gave the optimum yield for the three sources were identified. The regression equation for each source was reported. The coefficient of determination (R2) value for orange, guava leaves and cassia fistula extract were 99.51%, 99.90%, and 99.77% respectively. This shows that the model is a good prediction tool for extraction of oil from these sources. Based on the R2 values guava leaves (99.90%) gave the highest prediction accuracy followed by Cassia fistula (99.90%), with orange leaves having the lowest R2 value (99.77%) among the three sources considered.
The Role of Construction Materials in Building Collapse in Nigeria: A Review
Authors: Bamigboye G. O. , Michaels T. , Ede A. N. , Ngene B. U. , Nwanko C. , Davies I. 
Published: December 2019

Abstract
Building failure or collapse happens both in the developed and developing countries but the rate of occurrence in the developing country such as Nigeria is quite alarming and therefore call concern. The menace of building collapse in Nigeria is very alarming and appalling. Building collapse in Nigeria has become the norms they are easily swept under the carpet whenever it occurs. It is rather unfortunate that both human and economic loss we record each time there is a failure or building collapse is rather humongous. There is also a lot of blame game among professional stakeholders in the industry once failure or collapse of building occur and unfortunately, there is no proper scientific investigation in most developing countries such as Nigeria to ascertain the cause of failure or collapse as the case may be in order to avoid any future occurrence. In the cause of this review, it was discovered that building materials such as reinforcing steel, cement, sand, granite, sandcrete blocks and concrete play huge important role in either the collapse or stability of buildings in Nigeria. The roles of these materials are so vital that they contribute immensely to the collapse of buildings. It was concluded that 10-25% of buildings that collapse in Nigeria are as a result of the use of poor quality building materials. The review has extensively dealt with building collapse in relation with the role of building materials during construction.
Achieving Energy Efficient Building through Energy Performance Analysis of Building Envelope in Student Housing
Authors: Olanrewaju S. D. , Adetunji O. S. , Ogundepo T. M. 
Published: December 2019

Abstract
Protecting the built environment through reasonable incorporation of sustainable principles into the design of buildings is a vital role of architects and other built environment professionals. By so doing, the increase observed in energy demand of buildings constitutes a major challenge to the protection of and reduction of greenhouse gases produced by buildings. This constitutes a critical element in the movement towards a more sustainable future. This study examines the indispensable relevance of carrying-out energy performance analysis on a building design blueprints prior to construction. The study employs the use of Autodesk Revit 2014 as a Building Information Modeling (BIM) tool and Autodesk Green Building Studio (GBS) for energy performance analysis of an existing student housing at Federal University of Technology Akure, Ondo state, Nigeria in order to recommend energy efficient strategies that could be implemented at the design phase of the student housing. The energy-saving effects of the different building envelope were investigated and results were analyzed. The annual energy use revealed approximately 60 percent of electricity consumed from the national grid with the left-over 40 percent expelled on fuel. This result was, however, based on an assumption of a 20 hours minimum daily power supply from the national grid. The monthly heating load chart shows that heat is lost from the walls of the building. The walling material has a considerable impact on energy consumption. The simulation results of the existing student housing were compared with eight alternative designs that alter the building envelope and incorporate shading devices to reduce the carbon footprint and energy use. The best alternative design runs reduced the energy consumed yearly from 402, 168 kWh/year to 385, 318kWh/year.
Microwave irradiation technique: Green potent energy source for sustainable applications
Authors: Ajani Olayinka O. , Iyaye King T. 
Published: December 2019

Abstract
Synthesis of organic and inorganic compounds is a foundational concept in the preparation of bioactive material for drug development as well as provision of materials for other applications in everyday life of man. Conventional synthetic approach by heating under reflux has been in use since antiquity. This usually take a longer time to complete, it is not void of release of toxic chemical and could lead to decomposition of envisaged compounds some time. In recent time, microwave assisted reaction have been adopted in synthesis of numerous compounds which are essential templates in many industrial processes and various application. This present review deals with the recent advances of microwave irradiation techniques as sustainable and ecofriendly means of preparing compounds of interest to man. Microwave assisted technique approach is noted to be remarkably useful towards the synthesis of bioactive materials for drug design, polymeric materials for composite matrix, donor molecules for corrosion inhibition, material for battery application, nanomaterials as perovskites for supercapacitance electrodes, high wavelength compounds as solar cell sensitizers, dye materials in textile industries among others. Thus, microwave irradiation is an unavoidable technique for the accelerated eco-friendly synthesis of organic compounds which must be well explored for the benefit of man and his environment.
Experimental analysis of the performance characteristic of an eco-friendly HC600a as a retrofitting refrigerant in a thermal system
Authors: Banjo S.O. , Bolaji B.O. , Osagie I. , Fayomi O.S.I. , Fakehinde O.B. , Olayiwola P.S. , Oyedepo S.O. , Udoye N. E. 
Published: December 2019

Abstract
The negative influence of refrigerants on the climate and the immediate environment in terms of their higher global warming potential (GWP) and ozone depletion potential (ODP) has prompted this study. Currently, natural refrigerants are the preferred alternative refrigerants and hydrocarbon is numbered among these natural refrigerants with zero ODP and negligible GWP. In order to improve and enhance the performance of the refrigeration system, the performance characteristics of the system were investigated experimentally using eco-friendly refrigerant HC600a as alternative to HFC134a. In addition, comparisons were made using refrigerant mass charge of 46 g of isobutane (HC600a) and 70 g of conventional refrigerant (HFC134a). Thermodynamic parametric analysis was conducted using electric power consumption, coefficient of performance (COP), cooling load and pull-down time (PDT) for the used mass charges. REFPROP software was applied to capture the thermodynamic properties of the vapour compression system (VCS). The results showed that the COP increased by 32.2 % when using 46g charge of hydrocarbon refrigerant with energy reduction of 4.5 %. Furthermore, the vapour compression system while using 46 g of isobutane (HC600a) attained an evaporating temperature of -21 °C in 60 minutes while 70 g of HFC134a attained the same temperature in 2 hours 15 minutes, which makes HC600a alternative refrigerant to run in the traditional refrigerator.
Elucidation of phase equilibria in quinary system composed of lithium, sodium, and potassium cations along with sulfate and tetraborate anions at 0°C
Authors: Tursunbadalov Sherali 
Published: December 2019

Abstract
The results of determination of phase equilibria in quinary system which is composed of lithium, sodium, and potassium cations along with sulfate and tetraborate anions at 0°C by translation method were discussed. Six invariant points, eighteen monovaraint curves, nineteen divariant fields and eight trivariant volumes were observed in this system. The total phase equilibria diagram of the system was fragmented into divariant cocrystallization fields of two solid phases and trivariant crystallization volumes of individual solid phases. The extracted crystallization volumes from total diagram reflect the structures of projected Janecke diagrams of the system saturated with the solid phases. The obtained results agree well with available experimental results and comprehensively clarify the reciprocal relations of phases in the system.