bluuebunny/crossref_metadata_2025_split huggingface dataset:
A sustainable ubiquitous engagement platform for open government Implementation.
Authors: Goddy-Worlu R. N. , Ayo C. K. , Geteloma V. O. 
Published: December 2019

Abstract
Open government is known as a systematic procedure of government towards ensuring collaboration, transparency, innovation and participation to make government answerable to its citizens. It has been identified to have four stages of implementation with a given conceptual model known as the open government implementation model (OGIM). The first stage of the model is increasing data transparency, the second stage is improving open participation, the third stage is enhancing open collaboration and the fourth and final stage is realizing ubiquitous engagement. Each stage of this model provides its own deliverables from the first stage down to the last however, this paper focuses on the specific final stage of the model which is realizing ubiquitous engagement. In order to realize ubiquitous engagement, a platform for citizen engagement needs to be made available everywhere and at any time. The paper is aimed at proposing a sustainable engagement framework for open government as well as using the adopted framework for the design of an n-tier application architecture for citizen’s engagement. The ubiquitous engagement platform is a mobile platform which provides a suitable avenue for active citizen participation in government policies and procedures. It is a one-stop application enabling government transparency and effective citizen communication. With the introduction of the platform, it bridges the communication gap between the citizens and government. Thereby enabling citizen’s participation to enabled at available at any time and at anyplace via a reliable platform. The platform also enables government transparency and trust in government.
Corrosion Performance and Surface Analyses of Laser Cladded Zn-Ni-Fe Coatings on ASTM A29 Steel.
Authors: Akinlabi E. T. , Fatoba O.S. , Akinlabi S. A. , Mwema F. M. 
Published: December 2019

Abstract
The corrosion behaviour of the laser coatings was investigated in 3.65 % sodium chloride solutions at 30°C via potentiodynamic polarization technique. The composition of Zn-50Ni-5Fe at parameters 900 W and 1.2 m/min exhibited enhanced electrochemical performance in 3.65wt.% NaCl solution. Microstructures with unique characteristics and refinement of grain size were observed. The fast solidification of the coating is accounted for this unique features. In terms of corrosion performance, results revealed that increasing the laser scanning speed was beneficial to the property, showing that the corrosion performance became better at higher scanning speeds. At the set laser intensity of 900 W and increased laser velocity, Zn-50Ni-5Fe coatings showed enhanced microstructure. The multiple tracks applied in the direct laser metal deposition (DLMD) process had resulting fields of residual stresses which attributed to the solid-state phase transformation that was a repeated process. The study validated the reliability of optimizing DMLD set parameters for metallurgical and mechanical considerations. These bring improvements in coatings which were laser cladded in terms of their corrosion performance and the dimensional accuracy, by optimizing the processing parameters. The only processing parameters which were varied was the laser intensity and the scanning speed, which were employed to numerically design the DLMD experiment. An empirical method was also developed and was used to validate the results achieved experimentally. The Grey relational model (GRM) used in this research described vividly the influence of optimized factors on the improved corrosion resistance and compared reasonably with the experimental results. In addition, the proposed model has the potential to provide induced corrosion rate predictions of coatings fabrication that are additively manufactured.
Silicon Nitride-based Ceramic Material as a Reinforcement with Corrosion Resistance Properties in High Grade Aluminium (AA8011) Metal Matrix Composites
Authors: Fayomi J. , Popoola A.P.I. , Popoola O.M. , Fayomi O.S.I. 
Published: December 2019

AbstractThe impact of silicon nitride particulates as a ceramic reinforcement material on the corrosion mitigation of AA8011 in 0.5 M H2SO4was Experimented with potentiodynamic polarization technique, and the microstructural evolution was keenly observed with TESCAN scanning electron microscope (SEM). The findings from the research show the enhancement in the corrosion performance of the developed composites in relation with the unreinforced AA8011 alloy. The corrosion rate was observed to decrease drastically at higher percentage reinforcement of 20% Si3N4with 66.78% efficiency. The scanning electron micrographs present a pitting form of corrosion, the pit was seen to be more pronounced in the unreinforced alloy than the developed composites.
Review of Atomic Layer Deposition of Nanostructured Solar Cells 4
Authors: Ukoba O.K. , Jen T-C. 
Published: December 2019

Abstract
This study reviews atomic layer deposition technique with a special interest on solar cells applications. Atomic layer deposition is a vapour phase deposition technique used for producing thin films for several applications. This review focuses on the chemistry of Atomic Layer Deposition of solar cells, merits and demerits of ALD on thin film solar cells. Solar cells have attracted a lot of interest due to their potential for affordable, clean and sustainable energy. Solar cells can be deposited using different deposition techniques but Atomic layer deposition currently attracts attention owing to the merits. ALD has functional merit to bulk materials, great processing flexibility and affordability. The review examined the merits of ALD and solar cells and areas for future study. It offers affordability, ease of control of film growth, conformal and improvement on the deposition of solar cells. Despite few demerits, ALD is poised to be the deposition technique of choice for modifying interfaces of the film for improved performance.
Review on The Energy and Exergy Analysis of Vapour Compression Refrigeration System Using Nanolubricant
Authors: Ogbonnaya Mercy , Ajayi Oluseyi O. , Waheed M.A , Oyedepo Sunday O. 
Published: December 2019

Abstract
The vapour compression refrigeration system (VCRS) is an energy system used for preservation and cooling of household, agricultural and industrial products but the energy consumption of the system is high globally. With this challenge, the need to reduce the energy consumed and enhance its performance becomes eminent. The thermal conductivity of heat transfer fluids plays a significant role in the heat transfer characteristics of the fluid and the overall performance of an energy system. The low thermal conductivity of refrigerant can be enhanced by dispersing nanoparticles into the refrigerant. The use of nano refrigerant or nano lubricant has been found to be useful in the reduction of energy consumption and enhancement of the VCRS performance. This review discusses the energy and exergy performance of the VCRS with the aim of identifying some critical factors that affects the performance optimization and exergy destruction within the system.
Macroeconomic as Basis of Economic Growth : An ARDL Approach
Authors: Oluwafemi I.J. , Laseinde O. T. 
Published: December 2019

Abstract
We examined the effect of some selected macroeconomic factors reflecting on Nigeria economic growth between the periods of the year 1981 to the year 2015 using Auto Regressive Distributed Lag denoted as ARDL method. Findings revealed that foreign direct investment, and trade openness were the major factors that determine real gross domestic product, especially in the short run. On this basis, this paper, therefore, concluded that increase in the net flow from foreign investors from the rest of the world has a significant effect on the Nigeria economy as it increases the capital inflow and improves economic growth.
Evaluation of sustainability concepts in public housing projects in ogun state, nigeria.
Authors: Chiamaka Ukwunna , Aduwo Egidario B. 
Published: December 2019

Abstract
The issues associated with housing are colossal and multifaceted, displaying clear and concise differences in various parts of the world. As is the case of most urban environments, the problem of housing can no longer be limited to the quantity of houses available, it should also include the quality and the location of these housing units. As a result, this study intends to assess the different sustainability concepts adopted in the planning, design and construction of public Housing in Ogun State. The objectives of the study were to, evaluate the physical characteristics and conditions of the housing units, examine the socio-economic characteristics of the residents, and determine factors which affect the level of satisfaction of the residents. 274 housing units were assessed, from four public housing estates in the state, between the months of December, 2018 and February, 2019. Data was gathered by administration of questionnaires as well as interviews to household heads. The data was analyzed using descriptive and inferential techniques. The result of study highlighted that the housing estates were assessed to be sustainable as regards the housing density of the units and the affordability levels, however the estates were deemed unsustainable based on type of building materials used, proximity to basic amenities, and non-existence of communal facilities. The study concluded that relevant agencies as regards housing in the state, should focus on the provision and maintenance of public facilities so as to improve resident’s satisfaction and also make use of adaptable spaces when designing houses, so as to cater for unexpected growth in the family and improve quality of life of the occupants.
Production and Characterization of Partially Purified α-amylase from Aspergillus niger
Authors: Atolagbe Oluwabunmi M , Ajayi Adesola A , Olasehinde Grace I 
Published: December 2019

Abstract
Alpha amylase is a class of amylases that aid in the breakdown of internal α-1, 4-glycosidic linkages in starch. They are important in various pharmaceutical, food, brewing, paper, chemical and textile industries. The aim of this work was to produce and characterize α-amylase produced by A. niger. A. niger was used to produced alpha amylase in a basal salt medium which was then purified with activated carbon. The effect of pH, temperature, substrate concentration and heat on the produced amylase was investigated. The highest activity of the enzyme was recorded at 40 °C and pH 6.0. The apparent Km value for the enzymic hydrolysis of starch was 0.13mg/ml. Heating at 70 °C greatly affected the activity of the enzyme losing up to 35% of its activity after 5 mins. Physical conditions of heat, pH and concentration of substrate are significant factors which should which affect the activity of enzymes.
Performance Evaluation of Hydrocarbon based Nanorefrigerants Subjected to Periodic Door Openings
Authors: Okotie T. E. , Adelekan D. S. , Ohunakin O. S. , Gill J. , Atiba O. E. , Atayero A. A. 
Published: December 2019

Abstract
Domestic refrigerators are required to be energy efficient and environmentally safe. In this work, a slightly modified domestic refrigeration system was infused with various concentrations (0, 0.2, 0.4 and 0.6 g/L) of TiO2 nanolubricants and R600a refrigerant with a mass charge of 40g. The average energetic characteristics of the test rig at different door openings intervals (0.5, 1, 2, 3 and 5 minutes) were evaluated. The energetic characteristics studied were coefficient of performance (COP), refrigeration capacity, power consumption and cabinet temperature recovery time. The results obtained showed that the use of nanolubricants significantly affect the energetic performance characteristics of the system. Overall, the utilization of 0.6g/L concentration of TiO2 nanolubricant gave the best performance. The COP of the system improved by 22.39 %, while the power consumption decreased by 23.5 % when compared with pure R600a refrigerant.
Mitigating biodiversity destruction through environmental impacts assessment of infrastructural projects
Authors: Ugwu E I , Ekeleme A C , Okolie S TA , Ibe O P , Chieke C F , Ibearugbelem H O , Omeje M , Awoyera P O , Ede A N 
Published: December 2019

Abstract
The geometric rate of biodiversity loss in developing countries like Nigeria has been identified as a problem of major concern. The loss in biodiversity in modern times is evident in the extinction of many plants and animal species. In developing countries like Nigeria, more attention is given to aesthetics, functionality as well as the cost of proposed projects than the environmental impacts of the projects. During construction and rehabilitation of infrastructural projects, biodiversity is destroyed. Thus, this study was aimed at exploring the various ways by which infrastructural projects affect biodiversity, with a view to proffering ways of its restoration. The negative effects of infrastructural projects on biodiversity can be reduced through Environmental impact Assessment (EIA). This will help in averting the detrimental effects on natural resources. In situations, where natural habitat loss is unavoidable, adequate mitigation measures such as provision of strict protection zones along the proposed projects should be adopted. In order to meet sustainable development goal, EIA should be carried out before projects that may have a negative impact on the environment are constructed.
“Crude distillation overhead system”: Corrosion and Control.
Authors: Fajobi M.A. , Loto R.T. , Oluwole O.O. 
Published: December 2019

Abstract
Corrosion problem has been a major challenge in the crude distillation overhead system of the petrochemical industry. It affects every part of the metallic structures of the crude distillation overhead system due to contaminants from crude oil. As a result of this, lots of revenue are been incurred to tackle it. This review therefore discussed the definition of a crude distillation overhead system, its working principle, the structural material for constructing crude distillation overhead system, the types of corrosion that occurs in crude distillation overhead system, the economic cost, the prevention and control methods employed in crude distillation overhead system. Also, the review showed that materials used for crude distillation overhead system, such as carbon steels, are mostly affected by pitting corrosion, intergranular corrosion and general corrosion. In addition, the review showed that the use of material selection, inhibitors, protective coating and cathodic protection are the common prevention and control methods usually employed in crude distillation overheard system. However, the review stated that the use of inhibitor is the most trusted and time tested as the proven method of prevention and control in crude distillation overhead system. This will help to reduce the huge economic cost incurred on corrosion effect in petrochemical industry, especially in the crude distillation overhead system.
A Study on the Corrosion Inhibition Effect of Hexamethylene Tetramine on Welded API 5L X70 Steel in E10 Fuel Ethanol Environment
Authors: Joseph O. O. , Babaremu K. O. , Adeniyi J. A. 
Published: December 2019

Abstract
The inhibition effect of hexamethylenetetramine (HT) in E10 environment for the corrosion protection of welded API 5L X70 pipeline steel was examined using immersion tests. Welded samples of API-5L X70 steel of dimension 30 mm x 15 mm were immersed into E-10 fuel ethanol containing hexamethylenetetramine concentration of (0.2, 0.4, 0.6, 0.8) g and the control for a minimum of 4 days and a maximum of 28 days. Analysis was done using mass loss, corrosion rate, inhibitor efficiency and ANOVA test. From the mass loss and corrosion rate analysis, it was observed that 0.2g HT, which was the lowest concentration of inhibitor, proved best for inhibiting corrosion at 24 days.
Moment model of an uniformly magnetized permanent magnet based on point sources of the field
Authors: Bakhvalov Y A , Grechikhin V V 
Published: December 2019

Abstract
Permanent magnets are widely used in various technical devices. Mathematical models of magnetic fields of permanent magnets are considered to solve the problems of analysis and synthesis of such devices. The paper proposes a third model, based on the use of point sources of a magnetic field in addition to the two known models of uniformly magnetized permanent magnets (current and charge models). Each point source is characterized by a vector magnetic moment. The features of the model for permanent magnets of various shapes are considered. The advantage of the new model is to reduce the computation time of the magnetic field parameters by reducing the dimensionality of the modeling problem.
Climate change induced socio-economic tipping points: review and stakeholder consultation for policy relevant research
Authors: van Ginkel Kees C H , Botzen W J Wouter , Haasnoot Marjolijn , Bachner Gabriel , Steininger Karl W , Hinkel Jochen , Watkiss Paul , Boere Esther , Jeuken Ad , de Murieta Elisa Sainz , Bosello Francesco 
Published: December 2019

Abstract
Tipping points have become a key concept in research on climate change, indicating points of abrupt transition in biophysical systems as well as transformative changes in adaptation and mitigation strategies. However, the potential existence of tipping points in socio-economic systems has remained underexplored, whereas they might be highly policy relevant. This paper describes characteristics of climate change induced socio-economic tipping points (SETPs) to guide future research on SETPS to inform climate policy. We review existing literature to create a tipping point typology and to derive the following SETP definition: a climate change induced, abrupt change of a socio-economic system, into a new, fundamentally different state. Through stakeholder consultation, we identify 22 candidate SETP examples with policy relevance for Europe. Three of these are described in higher detail to identify their tipping point characteristics (stable states, mechanisms and abrupt change): the collapse of winter sports tourism, farmland abandonment and sea-level rise-induced migration. We find that stakeholder perceptions play an important role in describing SETPs. The role of climate drivers is difficult to isolate from other drivers because of complex interplays with socio-economic factors. In some cases, the rate of change rather than the magnitude of change causes a tipping point. The clearest SETPs are found on small system scales. On a national to continental scale, SETPs are less obvious because they are difficult to separate from their associated economic substitution effects and policy response. Some proposed adaptation measures are so transformative that their implementations can be considered an SETP in terms of ‘response to climate change’. Future research can focus on identification and impact analysis of tipping points using stylized models, on the exceedance of stakeholder-defined critical thresholds in the RCP/SSP space and on the macro-economic impacts of new system states.
Chicken nugget nutrition composition with an additional variation of breadfruit flour
Authors: Hafid H , Nuraini  , Agustina D , Fitrianingsih  , Inderawati  , Ananda S H , Anggraini D. U. , Nurhidayati F 
Published: December 2019

Abstract
The study aims to evaluate nuggets substituted with chicken intestine and breadfruit flour. The treatment consisted of 100% topica flour (P1), and substitution with breadfruit flour each of 15% (P2), 25% (P3), 35% (P4), 50% (P5), 65% (P6), 75% (P7), 85% (P8), 100% (P9). The study showed that the water content of P4 nugget to 100% (P9) was significantly lower than the control (P1). 100% ash content substitution nugget (P9) breadfruit flour was significantly higher than the control. The substitution of breadfruit flour does not affect protein and fat. It was concluded that the substitution of breadfruit flour with tapioca in the manufacture of the nugget was significantly different in water content and ash, but protein and fat content of the resulting nugget were relatively the same. The composition of 50% substitution nugget tapioca flour and breadfruit 50% (P5) contains 61.5% water, 1.65% ash, 17.55% protein, and 17.72% fat.
Some glycemic carbohydrate indices as alternative foods for people with diabetes mellitus (dm)
Authors: Harleli  , Ruwiah  , Naro Elyas Sueratman AR 
Published: December 2019

Abstract
Diabetes mellitus (DM) is a metabolic disease that increases blood glucose levels above normal due to abnormal insulin secretion, insulin action, or both. The purpose of this study is to determine the glycemic index (IG) of several types of food. The method of this study was observational with cross-sectional study design. The results showed that the lowest GI was young corn (IG 34), kepok banana (IG 46), cassava (IG 46), Havermuth (IG 48), sweet potato (IG 51), and taro (IG 54). Head rice has a high GI, which is 78. This study concludes that the lowest GI is young IG 34 and the highest is rice, having IG 78. This study is expected as a strategy in the selection of low-GI food ingredients as a preventive measure dm.
Analysis of the competitiveness of cocoa commodity (Theobroma cacao L.) in Kolaka Regency
Authors: Kasmin M O , Nursalam  
Published: December 2019

Abstract
This study aimed to analyze the level of comparative and competitive advantage of cocoa commodities at the farm level in Kolaka regency, and to analyze the impact of government's policy on the comparative and competitive advantage of cocoa commodities in Kolaka regency. The study used the Policy Analysis Matrix (PAM) to analyze data. The results of the study showed that the private benefit of cocoa farm level in Kolaka regency was IDR 8.579.759-, whereas the social benefit was IDR 10.169.805. Cocoa commodity in Kolaka regency has a high level of competitiveness as shown by the DRCR value of 0,69 and PCR value of 0,67. Regarding the government's policy on output, it was revealed that farmers do not gain benefits from the government's policy on the output as shown by the NPCO value of 0,9597. The government's on input (tradable input) has created an efficiency cocoa farming in Kolaka regency as indicated by the NPCI value of 0,4434. The government's policy of input-output showed that there is a government policy which reduces the benefits of the cocoa producer in Kolaka regency as indicated by the PC value of 0,8436.
Daylight intensity analysis of secondary school buildings for environmental development
Authors: Irnawaty I , Ramli Rahim M. , Hamzah Baharuddin , Jamala Nurul 
Published: December 2019

Abstract
Environmental development can be achieved by implementing energy efficiency in buildings. According to International Energy Agency (IEA) data, the lighting sector consumes 20% of world electricity production, contributes 6% of global CO2 emissions and as much as 3% of world oil demand for the same purpose. Natural lighting is the best lighting source for buildings, including school buildings. By optimizing the lighting in the building, it will save energy use in the building. This study discusses the compatibility of natural lighting in junior high school classrooms and meets SNI 03-6197-2000 standards for building lighting. The method of this research is quantitative, data obtained through survey measurements directly at the study site. There are four junior high schools in the city of Makassar that were used as research samples. The sample was chosen by purposive sampling. In each school, morning measurements are carried out until noon. The results showed that most of the natural light in junior high school classrooms in Makassar City was below the average lighting standards of SNI classrooms. A total of 75.00% of the SNI standard is average for classrooms and only 25.00% exceeds the SNI standard value.