Wind Power Generation, a Review of the Doubly Fed Induction Generator

In recent years, there’s been a renewed interest in renewable energy sources due to environmentalproblems and the eventual shortage of fossil fuels. Wind energy made considerable strides especially inEurope, particularly Denmark and Germany [1, 2]. Wind is a source of energy which has gained popularityin the last few years, coupled with the fact that it is a non-polluting and renewable energy source withminimal costs involved in operating expenses. A lot of distribution systems use this energy source for theirpower supply. A lot of generators are in use with wind as a source of energy, however the most commonlyused generator in modern times, and especially with units above 1 MW is the doubly fed induction generator(DFIG). This paper aims to look at the features of the doubly fed induction generator which has made it anenviable bride in wind power generation

Evaluation of physical characteristics of chevon as affected by post-mortem carcass dressing and freezing preservation

This study was conducted to investigate the effects of post-mortem dressing methods and freezing preservation on the physical characteristics of chevon. Twenty-seven Red-Sokoto male goats between 10 and 12 months of age weighing 18–20 kg were purchased, stabilized and slaughtered. The carcasses were randomly allotted to three post-mortem dressing procedures (scalding, skinning and singeing) and meat from thigh cuts was frozen for 0, 7, 14 and 21 days. Meat samples were excised each day after thawing for physical analysis and data collected were subjected to analysis of variance (ANOVA) in a completely randomized design experiment with 3x4 factorial arrangement. The significant means were separated with the Duncan multiple range test at p<0.05. The results showed that the post-mortem dressing methods and freezing affected Red-Sokoto chevon significantly with the singeing method exerting the highest detrimental effects on physical attributes of meat with the exception of color, yield and pH, while the skinning method exerted the least detrimental effects. Also, cold, cooking and drip losses as well as thermal shortening, cold shortening and pH values increased between the 14th and 21st day, while color, yield, water holding capacity, texture and shear force values decreased across the three treatments during freezing periods. The effects were more significant in singed and scalded meat than in skinned chevon. It was recommended, therefore, that skinning method be encouraged if meat from Red-sokoto male goats is to be frozen and the period of freezing be limited to 14 days for wholesome meat

Entomophagy — An evaluation of quality and acceptability of Raphia palm weevil larvae (Rhynchophorus phoenicis) as influenced by thermal processing methods

In this study, the quality and acceptability factor of Raphia palm weevil larvae (Rhynchophorus phoenicis) as influenced by different thermal processing methods were investigated. Raphia palm weevil larvae (n=1000) were randomly distributed into four groups of 250 larvae per group according to a treatment, namely: T1 = boiling (100 °C), T2 = roasting (120 °C) T3 = frying (160 °C) and T4 = oven-drying (180 °C). All treatments lasted 20 minutes. Analyses were carried out to determine the physical, chemical, vitamin and mineral composition, and microbial load. In addition, sensory characteristics were evaluated. Weevil larvae processed by the boiling method had the highest cooking yield (97.59%), water holding capacity (21.78%) and the lowest cooking loss (2.41%). The protein and fat content was higher in weevil larvae processed by frying (37.63% and 17.70%, respectively), while moisture was lowest (18.68%) in oven-dried larvae. The calcium, magnesium and phosphorus content was higher in oven-dried larvae, while there were no significant differences in iron, manganese, zinc and vitamins in the processed larvae irrespective of the methods. Boiled larvae had a higher microbial load, while fried and oven-dried larvae had the lowest microbial load. Fried larvae elicited highest sensory characteristics except tenderness, which was higher in boiled larvae, but fried larvae had higher overall acceptability than those processed by other methods. Therefore, it has been shown that the frying method is an appropriate method of processing Raphia palm weevil larvae for enhanced quality and acceptability.In this study, the quality and acceptability factor of Raphia palm weevil larvae (Rhynchophorus phoenicis) as influenced by different thermal processing methods were investigated. Raphia palm weevil larvae (n=1000) were randomly distributed into four groups of 250 larvae per group according to a treatment, namely: T1 = boiling (100 °C), T2 = roasting (120 °C) T3 = frying (160 °C) and T4 = oven-drying (180 °C). All treatments lasted 20 minutes. Analyses were carried out to determine the physical, chemical, vitamin and mineral composition, and microbial load. In addition, sensory characteristics were evaluated. Weevil larvae processed by the boiling method had the highest cooking yield (97.59%), water holding capacity (21.78%) and the lowest cooking loss (2.41%). The protein and fat content was higher in weevil larvae processed by frying (37.63% and 17.70%, respectively), while moisture was lowest (18.68%) in oven-dried larvae. The calcium, magnesium and phosphorus content was higher in oven-dried larvae, while there were no significant differences in iron, manganese, zinc and vitamins in the processed larvae irrespective of the methods. Boiled larvae had a higher microbial load, while fried and oven-dried larvae had the lowest microbial load. Fried larvae elicited highest sensory characteristics except tenderness, which was higher in boiled larvae, but fried larvae had higher overall acceptability than those processed by other methods. Therefore, it has been shown that the frying method is an appropriate method of processing Raphia palm weevil larvae for enhanced quality and acceptability

Pentecostalism and Nigeria : New Forms of Religious Life

Pentecostalism is on the rise in various parts of the world, particularly in Africa. Several studies have emerged in recent years that have attempted to explain the reasons for the movement’s proliferation. The focus of this thesis is on the Pentecostal revival in Nigeria, which, it is argued, can be seen as a new form of religious life that revolves around three central themes. The first is a new form of religious attitude that I describe as the Pentecostal experience that is generated by the ‘collective effervescence’. This experience is achieved through the rites and rituals of worship that consists in prayer, praise-worship and other forms of religious performance underpinned by feelings of spirituality. I argue that a consideration of the Pentecostal experience not only offers greater insight into the African religious attitude, but also marks an improvement on the religious experience theories of thinkers like William James. The second theme is the vehicle through which the Pentecostal experience is achieved: the body. The thesis discusses the role of the body and argues for its centrality to Nigerian Pentecostalism through its dynamic expressivity and sacred performance. The third theme of the thesis is the Nigerian Pentecostal approach to the scriptures. I contrast the oral aspects of African cultures with Western literary culture of the scriptures to argue that the dynamism of ecstatic performance that we find in the oral culture has informed the Pentecostal approach to biblical texts. Additional insights into these themes are provided by an ethnographic study of a Nigerian Pentecostal Church in London. The thesis also argues against the highly influential social deprivation explanation that has been advanced by a number of authorities. Overall it builds on existing studies of African Pentecostalism and breaks new ground in Pentecostalism scholarship

A Study of Some Quality Characteristics of Paracetamol Tablet

This paper is focused on the study of some quality characteristics of Paracetamol Tablet produced by TUYIL Pharmaceutical Industry Limited, Ilorin, Kwara State between January and June 2019. The data used was a secondary data collected from the quality department of the company, and collected on the following four quality characteristics: average weight (milligram), hardness (kilo pounds), disintegration time (minutes), and friability (percentage) as in the appendix. The Pattern of distribution was examined for the characteristics through their histogram and monitored using 16X"> -chart and R-chart. The process capability analysis was carried out by estimating the capability indexes. All the quality characteristics studied are in statistical control, capable of producing within their specified range. All the pairs of the quality characteristics are significantly correlated. Keywords:Specification Limits, Upper Control Limit, Lower Control Limit, Statistical Process Control, Average Weight, Disintegration Time, Hardness, Friability DOI: 10.7176/JHMN/95-03 Publication date: November 30th 202

ENHANCED STUDENTS LEARNING AND THE NEW GRADUATES EXPERIENCE: A CASE IN ARCHITECTURE DEPARTMENT, COVENANT UNIVERSITY

All year round in the world, admissions into higher institutions of learning are carried out with most students finding themselves in various disciplines including Architecture. Once on these career paths, students have different learning abilities one differing from the other. Learning enhancement refers to skills acquisition to improving understanding especially in the value and effective use of knowledge acquired. This is normally done through taught courses from departmental faculty members with the aim of enriching the undergraduate for maximum knowledge enhancement. As a result, this research will try and identify the modern and dynamic learning techniques available for knowledge dissemination to undergraduate classes of Architecture at Covenant University. Quantitative research methods was adopted where questionnaires were administered to the fresh classes of the Department of Architecture. This paper aims to enhance learning skills at the undergraduate level and the application towards effective teaching delivery by faculty in Architecture schools. The following questions are to be answered: What are the relevant skills required of undergraduate students in the department of architecture?, What current enhanced learning techniques are used in teaching the students in the fresh classes of Architecture at Covenant University? and In what ways can innovative teaching methods and skills of knowledge transfer be used to enhance effective learning at the undergraduate level? Contributions to knowledge are that new methods of enhanced learning techniques are to be recommended from the study, and also new methods of knowledge transfer will be proffered. Secondly, enhanced learning methods and skills need to be introduced into the curriculum towards effectively equipping the new intake better prepared for the course of study

SOCIO-DEMOGRAPHIC AND PSYCHOLOGICAL DETERMINANTS OF LEISURE TIME PHYSICAL ACTIVITY AMONG ADOLESCENTS IN NIGERIA

Despite the numerous benefits associated with leisure time physical activity (LTPA), it is quite worrisome that the habit of regularly engaging in LTPA is rare among Nigerians, especially among adolescents who are found in myriads of sedentary lifestyle behaviour as a result of technological and economical advancement. The present study examined socio-demographic and psychological determinants of LTPA among adolescents in Nigeria. A cross-sectional study was conducted and multistage sampling technique was employed to recruit 1200 adolescents (Male =59.7%; Female =40.3%; Age: 10-19years) from twelve secondary schools in Southwest States, Nigeria. Physical Activity Self-Efficacy for Adolescent (PASE), The Physical Activity and Leisure Motivation Scale (PALMS), Activity Questionnaire for Adults and Adolescents (AQuAA) and Self-developed Socio-demographic Questionnaire were used to collect the data. Data were analyzed using statistics of frequency count, percentages & Multiple Regression. The result of the study showed that socio-demographic (F(8,1191) = 4.980; p< .05; R2 = .28) accounting for 28% of its variance and psychological factors (F (2,1197) =31014.342, p< .05; R2 = .99) accounting for 99% of its variance) were significant. Based on the findings, adolescents in Southwest states in Nigeria do not meet the World Health Organization recommendations on physical activity. Both socio-demographic and psychological factors significantly determined LTPA and these factors could be taken into account in the development of interventions to increase LTPA levels throughout the life course among adolescents in Nigeria.   Article visualizations

Lugard and the Creation of Provintial Administration in Northern Nigeria 1900-1918

This paper discusses the roles played by Lord Frederick Lugard in the creation of provincial administration in Northern Nigeria. During his tenure as the High Commissioner from 1900 to 1906, the provinces he created were more or less "paper" provinces. This was so as the British colonial government had just been established in Northern Nigeria and thus exercised little or no control over most of the provinces. As the creation of the provinces was not preceded by a thorough study, and understanding of the customs and the indigenous administrative system of the people, Lugard's policies created serious problems. For instance, some ethnic groups were placed in provinces where they should not be. This provoked reactions from the people. Some colonial officials also reacted unfavourably to the creation of the provincial administration because of the huge expenditure involved. During his period as Governor-General of Nigeria, 1912-1918, Lugard embarked on the amalgamation of some provinces in Northern Nigeria. Like his previous efforts, this failed to materialize. The failure could be blamed on the character of Lugard and the style of his administration, as well as the peculiar circumstances of the governed. In spite of these problems, the provincial structure created by Frederick Lugard formed the bedrock of the British administration in Northern Nigeria in particular, and Nigeria in general

The 1913 Memorial: A Study of Protest and Discord among the British Political Officers in Northern Nigeria

This study focuses on the protest, discord and dissatisfaction among the "privileged" British Political Officers, in Northern Nigeria. Hitherto, it has been assumed that protest and discord were phenomena associated with the oppressed and deprived African people. In most of the published works on the British administrative history in Nigeria, enough light has been shed on the wide gap that existed between the British and the African staff in terms of remuneration, housing and medical care (Nicolson, 1969: 90-150). However the problems faced by the British Political Officers especially in Northern Nigeria remain a neglected theme. Like the Nigerian staff, they were not entirely pleased with their conditions of service. In many instances, they were bitter with the cold attitude of the Colonial Office to their problems. They also detested some obnoxious colonial regulations and often found the policy and style of the Northern political leadership unpalatable and cumbersome. In spite of stiff sanctions against erring political officers, entrenched in the British colonial civil service general order, many of them refused to remain silent over issues that ran counter to their interests