Aniline effect on concrete steel rebar degradation in saline and sulfate media

Electrochemical potential monitoring experiments were performed on mild steel rebars embedded in concrete admixed with aniline inhibitor and fixed amount of sodium chloride salt partially immersed in sulfuric acid and sodium chloride solution. The open circuit potential corrosion monitoring technique was employed and the potential readings were taken in accordance with ASTM C 876. Repressive attribute and consistency of the inhibitor was then estimated by the Weibull probability density distribution as an extreme value statistical modeling approach to study performance effectiveness and to predict the most efficient inhibitor concentration in each media. Aniline effect on the compressive strengths of the reinforced concrete samples was also investigated and reported. Varying concentrations of the inhibitor were used and its performance improved as concentration changed in NaCl medium, while no particular order of performance was noted in sulfuric medium. In the statistically analyzed experimental results for each of the inhibitor concentrations employed, 0.34 and 0.41 M aniline admixed samples were identified as exhibiting the best inhibiting quality in sodium chloride while 0.14 M aniline was predicted as showing the lowest probability of corrosion risk in sulfuric acid medium. The overall effective inhibitive performance in sulfuric acid was less when compared to the sodium chloride medium. Concrete sample admixed with 0.41 M aniline had the highest improvement in compressive strength in both media

Assessment of geomorphic and morphometry characteristics of parts of Shasha and Opa river basins in Obafemi Awolowo University Campus, Southwestern Nigeria

Geomorphic and morphometry characteristics of parts of Shasha and Opa Basins in Obafemi Awolowo University campus, Ile-Ife, southwestern Nigeria were assessed through the analysis of basin linear, areal and shape parameters with a view to quantitatively describe the hydrological characteristics of the area. The campus is drained by Rivers Shasha and Opa and their tributaries. Stream order, stream number, stream length, mean stream length, stream length ratio, length of over land flow, confluence factor, form factor, elongation ratio, stream segment density, drainage density, drainage texture and slope within the campus were determined through the evaluation of topographic, drainage, and land use and land cover maps. The campus is drained mostly by River Opa (4th order channel) and its tributaries while the remaining part (i.e. northeastern and northwestern parts of the campus) is drained by River Shasha (3rd order channel) and its tributaries. The mean 1st, 2nd and 3rd stream orders of River Shasha were 0.42, 0.54 and 1.03 km, respectively; while the mean stream length for the 1st , 2nd , 3rd and 4th stream orders of River Opa were 0.40, 0.64, 1.84 and 4.07 km, respectively. The average length of overland flow within the Shasha sub-basin was 0.25 km, while the average - length of overland flow within the Opa sub-basin was 0.15 km. Stream segment density increased from 0.16 km to 3.18 km in River Shasha and 0.08 km to 4.33 km in River Opa. Increased stream segment density from lower to higher stream order could have been influenced by increased fracture control of streams from lower to higher stream order. The predominant trend of the streams were NE-SW and NW-SE, suggesting the influence of differing lithologies or tectonic activities, where streams must have developed by taking advantage of the local relief for the varying stream flow directions

Analytical Modelling of Human Arm Locomotion during Dance as a Dynamical Multiple Pendulum System

During dance human arms move. The movement of the arms, to a large extent, determines how good a dance is. This paper attempts to model the locomotion of human arm, analytically, during a dance as a dynamical multiple pendulum system with three segments. The system is analyzed by considering some instances during the dance. The three angles the three segments make with the vertical are considered. The Euler-Lagrange equation is used in obtaining the equation of Motion. The resulted second order differential equation is solved analytically. Simulation results are presented. They are consistent with the ones in literature. Specifically the angular displacement values of the three segments are directly proportional to their respective angular acceleration. However, the novelty of this work is in the full analytical approach to 3-pendulum system and its application to danc

Soft innovations and organisational ambidexterity: required platforms for SMEs survival

Many of the previous research studies on innovation tend to focus on process and product (technological) innovations. It is, however, interesting to note that Organisational and Marketing Innovations (OMIs) could be the necessary prerequisites to optimally utilise and deploy such technological innovations. This study proposes Organisational Ambidexterity as a necessary antecedent to develop the firm’s OMI capabilities. For firms to remain competitive and adaptive to a continuous change in the business environment, Organisational Ambidexterity has been noted to be a necessary attribute, but research on ambidexterity at individual level of analysis is limited. The study intends to develop a framework that promotes effective innovation through shop floor employees’ contributions to Organisational Ambidexterity, OMIs capabilities of Small and Medium-sized Enterprises

Understanding the organisational context and the impact of contextual individual ambidexterity on organisational ambidexterity, organisational and marketing innovations in Nigerian SMEs

Many of the previous research studies on innovation tend to focus on process and product innovations. It is, however, interesting to note that Organisational and Marketing Innovations (OMIs) could be the necessary prerequisites to optimally utilise and deploy such technological process and product innovations. This study proposes Organisational Ambidexterity as a necessary antecedent to develop the firm’s OMI capabilities. For firms to remain competitive and adaptive to a continuous change in the business environment, Organisational Ambidexterity has been noted to be a necessary attribute, but research on ambidexterity at individual level of analysis is limited. The study intends to develop a framework that promotes effective innovation through shop floor employees’ contributions to organisational ambidexterity, organisational innovation capability and the firm’s marketing innovation capability

Teachers’ Experience and Teachers’ Competency Needs in the multidisciplinary approach to implementation of environmental education curriculum in Cross River State, Nigeria

The study was undertaken to determine teachers experience and their competence needs of teachers in the multidisciplinary approach to implementation of environmental education curriculum in Cross River State, Nigeria. One research question and one hypothesis were formulated to guide the study. The study adopted the descriptive survey design. The sample consisted of 737 teachers proportionally sampled from 67 public secondary schools in the three education zones of Cross River State. The teacher competence needs questionnaire in the implementation of environmental education curriculum containing competency needs items was used for data collection. The data were analyzed using means, standard deviation and t-test. Teachers’ experience (F=5.292; p<.05) significantly influenced their competence needs. Based on the findings, it was recommended among others under the multidisciplinary approach experience teachers should be well trained and retrain to be able implement EE curriculum

Dynamic Modeling and Analysis of Inverted Pendulum using Lagrangian-Differential Transform Method

There has been an increase in application of pendulum in robotics which is applicable in Medicine, Agriculture, Military, Industries Explorations and Entertainment. Many Researchers have shown interest in inverted pendulum stability and control in recent years. This study is concerned with the development of equation of motion of inverted pendulum and its analysis by adopting the Lagrangian and Differential Transform Method (DTM) respectively. The resulting equations were solved analytically. Results obtained are consistent with the ones in the literatur

THE RELEVANCE OF INFORMATION COMMUNICATION TECHNOLOGIES (ICTs) IN AGROFORESTRY PRACTICES

Heathcote (2000) posited that “Within half a century, computers and information technology have changed the world andaffected millions of lives in ways that no one could have foreseen”. The great impacts, contributions to knowledge,importance and economic achievements that have emerged from the fields of computer science (information science) andelectronic engineering, in the 21st century, are revolutionary and mind boggling (Bamgbade,2011). This paper explores theextent to which ICT applications have improved agro-forestry practices and discussed areas of application such as forestryand environmental management, species identification, research publication, ICT in agroforestry education, plant pathologystudies, wood anatomy, biometrics, Data management, modeling, analysis and miningKeywords: ICTs, Agroforestry, Impact, Management, Computers, Practices and Applications

Revisiting Family Values: A Pathway towards Societal Stability

The family can be regarded as society's oldest and most important social institution. Family responsibilities may include providing guidance, support and a sense of belonging to its members. This was basically the case with the traditional family where children learnt the values of discipline, hardwork, respect for elders and constitpted authority, responsibility, integrity and credibility. Indeed, a good family guarantees a good society and a good society would guarantee a good and stable nation. With modemity and industrialisation the role of the family seemed to have waned considerably as majority of parents have had less time for their children and seemed to have delegated most of their responsibilities to nannies and househelps due to work commitment. The end result have been an increase in juvenile delinquency, high levels of criminality, drug abuse and addiction, high rate of promiscuity, disregard for elders and constituted authority, the get rich quick syndrome, disregard for hardwork, corruption and a lack of responsibility, integrity and credibility. This paper therefore examines the situation critically and proffers solutions on how best to revert the situation before the society derails completely

Strategies for Dealing with Low Adoption of Agricultural Innovations: A Case Study of Farmers in Udenu L.G.A of Enugu State, Nigeria

A study to access the level of acceptance/adoption of agricultural innovations by farmers in Udenu Local Government Area of Enugu State was carried out. The aim was to find out the reasons behind the low acceptance/adoption of agricultural innovations by farmers in the area and to suggest possible strategies to address this ugly situation; as a way to increase food production amongst farmers in the study area. Hundred farmers from 5 communities in the study area and 10 staff of 2 agricultural Research Institutes were randomly selected as the major population for this study. Three (3) Alternate Hypothesis set for this study were tested using Chi-square statistical tool at 0.05 probability level of significance and at 4 degrees of freedom; and only one was rejected. Structured questionnaire and scheduled interviews were used to collect data from farmers and staff of the Research Institutes.  Result from the study showed that services of extension agents in the rural areas are inadequate and ineffective. It was also found that extension agents are faced with many challenges in their efforts to introduce new agricultural innovations to farmers; most farmers were reluctant to adopt new agricultural innovations/technologies for various reasons. Increasing the ratio of extension agents to farmers, use of indigenous extension agents and local interpreters to disseminate new innovations and technologies, training of model farmers as change agents, use of demonstration method and subsidizing agricultural inputs were recommended as strategies for encouraging acceptance/adoption of agricultural innovations and technologies by rural farmers. Keywords: Agricultural Innovations, Extension Agents, Technologies, Adoption, Small-Scale farmers