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Search Results: 1 - 10 of 248 matches for " Abiodun Iwayemi "
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Building Automation Networks for Smart Grids
Peizhong Yi,Abiodun Iwayemi,Chi Zhou
International Journal of Digital Multimedia Broadcasting , 2011, DOI: 10.1155/2011/926363
Abstract: Smart grid, as an intelligent power generation, distribution, and control system, needs various communication systems to meet its requirements. The ability to communicate seamlessly across multiple networks and domains is an open issue which is yet to be adequately addressed in smart grid architectures. In this paper, we present a framework for end-to-end interoperability in home and building area networks within smart grids. 6LoWPAN and the compact application protocol are utilized to facilitate the use of IPv6 and Zigbee application profiles such as Zigbee smart energy for network and application layer interoperability, respectively. A differential service medium access control scheme enables end-to-end connectivity between 802.15.4 and IP networks while providing quality of service guarantees for Zigbee traffic over Wi-Fi. We also address several issues including interference mitigation, load scheduling, and security and propose solutions to them. 1. Introduction The smart grid is an intelligent power generation, distribution, and control system. It enhances today’s power grid with intelligence, bidirectional communication capabilities and energy flows [1]. These enhancements address the efficiency, stability, and flexibility issues that plague the grid at present. In order to achieve its promised potential, the smart grid must facilitate services including the wide-scale integration of renewable energy sources, provision of real-time pricing information to consumers, demand response programs involving residential and commercial customers, and rapid outage detection. All these tasks demand the collection and analysis of real-time data. This data is then used to control electrical loads and perform demand response. In order to obtain the full benefit of smart grids, their communication infrastructure must support device control and data exchanges between various domains which comprise the smart grid. The smart grid must be allied with smart consumption in order to achieve optimum power system efficiency. This necessitates the integration of smart buildings, appliances, and consumers in order to reduce energy consumption while satisfying occupant comfort. Building automation systems (BASs) already provide this intelligence, enabling computerized measurement, control and management of heating, ventilation, air-conditioning (HVAC), lighting, and security systems to enhance energy efficiency, reduce costs, and improve user comfort. Buildings consume 29% of all electricity generated in the United States [2]; therefore, the ability of BASs to communicate
Essentials of indigenous languages to journalism education in Nigeria
Abiodun Salawu
Global Media Journal : African Edition , 2011, DOI: 10.5789/2-1-31
Abstract: This paper advocates for compulsory inclusion of indigenous languages in the mass communication/journalism curricula in Nigeria. Emphasising the point that every educational programme should be socially relevant and culturally sensitive, the paper argues that while it is not out of place for a journalist to be global in orientation and application, thereby equipping himself with proficiency in a very international language like English, it will, however, be out of place for him not to be able to communicate effectively with his very own people. This report concludes by calling for appreciation of the indigenous languages and support for the media's use of them, from both the people and the governments.
Beyond Hollywood Formulas: Evolv ng Indigenous Yoruba Film Aesthetics
Abiodun Olayiwola
Cross-Cultural Communication , 2011, DOI: 10.3968/1604
Abstract: Home video scholarship is an emerging aspect of theatre studies in Nigeria. While previous studies have been merely critical of Nigerian film practitioners’ inability to evolve an indigenous form, they have failed in prescribing necessary strategies for achieving this. This study, therefore, fills this gap by proposing devices for evolving an indigenous meta-language for the Nigerian film industry. It concludes, amongst others, that Nigerian film industry should evolve an indigenous film language through a fusion of traditional story telling forms and conventional film codes. Key words: Film; Indigenization; Yoruba video film; Aesthetics Resumé: La bourse du Home vidéo est un aspect émergent des études théatrales au Nigéria. Les études précédentes ont été simplement des critiques de l'incapacité des praticiens du cinéma nigérian d’élaborer une forme indigène, et elles ont échoué dans la prescription des stratégies nécessaires pour atteindre cet objectif. Cette étude, par contre, comble cette lacune en proposant des dispositifs pour une évolution de métalangage indigène pour l'industrie cinématographique nigérienne. Il conclut, entre autres, que l'industrie cinématographique nigérienne devrait trouver un langage cinématographique autochtone via une fusion entre les formes de récit d'histoire traditionnellse et des codes cinématographiques conventionnels. Mots-clés: Film; Indigénisation; Film Vidéo En Yoruba; Esthétiques
Preliminary Assessment of Anthropogenic Impact on Some Ecological Components of Abesan River, Lagos, Nigeria  [PDF]
Julius I. Agboola, Abiodun A. B. Denloye
Journal of Water Resource and Protection (JWARP) , 2011, DOI: 10.4236/jwarp.2011.32011
Abstract: The impact of anthropogenic disturbances on water quality parameters, diversity of macrophytes and benthic macro fauna of Abesan River, Lagos, Nigeria is reported. Some Physico-chemical and biological assessment were carried out at three sampling stations located at downstream (AR-1), midstream (AR-2) and upstream (AR-3) with different levels of disturbance. Results of measured physico-chemical parameters showed that there was no significant difference (P > 0.05) in temperature, total acidity and chloride values between the sampling stations. Although, Total solids, conductivity, DO, Sulphate, BOD and COD were significantly higher (P < 0.05) at Stn.AR-1 than at Stns. AR-2 and AR-3, all physico-chemical parameters measured were within the limits of the Lagos State Environmental Protection Agency (LASEPA) and the World Health Organization (WHO) regulatory standards except for high COD concentration in downstream station. Aquatic vegetation (macrophyte) diversity was relatively abundant at upstream and downstream stations, suggesting possible impact of human activities on macrophyte diversity at midstream station where highest level of disturbance occurred. Chironomid larvae were the most abundant invertebrate fauna found in all three sampling stations but more abundant at sampling station AR-2 which corresponds to point of effluent entry to river where human activities is most intense. There is evidence that anthropogenic activities impact on the water quality of Abesan River. Biotic indices such as Sorensenen’s Index of Similarity and Margalef Index show that Abesan River is lightly polluted. The implications of these results and the need to monitor the water quality of Abesan River are highlighted.
Effect of Extrusion Cooking of White Yam (Dioscorea rotundata) and Bambara-Nut (Vigna subterranean) Blend on Some Selected Extrudate Parameters  [PDF]
Bolanle Oluwatoyin Oluwole, Abiodun Adekunle Olapade
Food and Nutrition Sciences (FNS) , 2011, DOI: 10.4236/fns.2011.26084
Abstract: The effect of thermo-extrusion processing of white yam (Dioscorea rotundata) and bambara nut (Vigna subterranean) on some selected extrudate parameters of residence time, throughput and moisture content were investigated in this study. Both yam and bambara nut were processed into meals of 750 µm and 500 µm respectively. Extrusion was carried out following a three variable response surface methodology using a Box Behnken design. Blend of yam meal and Bambara nut meal at ratio 80:20 respectively was conditioned into 12.5, 15.0 and 17.5% moisture content (dry basis) and allowed to equilibrate for 4 h. Extrusion was carried out on a single screw extruder at 50, 60 and 70 rpm screw speed and 130oC, 140oC and 150oC barrel temperatures. The study revealed that the extrusion time varied between 13.1 and 29.7 sec, throughput varied from 13.3 to 34.4 kg/h and product moisture ranged from 11.1 to 16.8% dry basis). All investigated extrudate parameters were significantly affected (p< 0.05) by the process variables of screw speed, barrel temperature and feed moisture content, and their interactions. The results were indicative that the second order polynomial was adequate to model the dependence of the extrudate parameters of residence time, throughput and moisture content on extrusion variables of barrel temperature, feed moisture content and screw speed.
Effects of Food Diet Preparation Techniques on Radionuclide Intake and Its Implications for Individual Ingestion Effective Dose in Abeokuta, Southwestern Nigeria  [PDF]
Nnamdi Norbert Jibiri, Tolulope Hadrat Abiodun
World Journal of Nuclear Science and Technology (WJNST) , 2012, DOI: 10.4236/wjnst.2012.23016
Abstract: The radioactivity measurements in food crops and their diet derivatives and farm soil samples from Abeokuta, one of the elevated background radiation areas in Nigeria have been carried out in order to determine the concentration levels of natural radionuclides (40K, 226Ra and 232Th). The activity concentrations of the natural radionuclides in the samples were determined via gamma-ray spectrometry using a 76 mm × 76 mm NaI(Tl) detector. Different common food crops representing the major sources of dietary requirements to the local population were collected for the measurements. The collected food crops were prepared into their different derivable composite diets using preparation techniques locale to the population. Using available food consumption data and the activity concentrations of the radionuclides, the ingestion effective doses were evaluated for the food crops and diet types per preparation techniques. For the tuberous food crop samples, the annual ingestion effective doses in the raw and different composite diets were 0.02 - 0.04 μSv and cumulatively 0.04 - 0.05 μSv while in the non-tuberous crops the doses were 0.44 - 0.70 μSv and cumulatively greater than 1 μSv respectively. Results of the study indicate that method of diet preparation is seen to play a major role in population ingestion dose reduction especially for tuberous crops than in non-tuberous crops. The study also showed that more ingestion dose could be incurred in diets prepared by roasting techniques. The result of the study will serve as a useful radiometric data for future epidemiological studies in the area and for food safety regulations and policy implementations in the country.
Optimization of Blasting Parameters Using Regression Models in Ratcon and NSCE Granite Quarries, Ibadan, Oyo State, Nigeria  [PDF]
Jide Muili Akande, Abiodun Ismail Lawal
Geomaterials (GM) , 2013, DOI: 10.4236/gm.2013.31004
Abstract:

This research examines optimization of blasting parameters for economic production of granite aggregates in Ratcon and NSCE quarries located atIbadan,OyoState. Samples were collected from the study areas for the determination of rock density and porosity. Schmidt hammer was used for in situ determination of rock hardness. Uniaxial compressive strength of in situ rock was estimated from the values obtained from Schmidt hammer rebound hardness test and density determined from laboratory test. Blasting data were collected from the study areas for optimization. Multiple regression analysis using computer aided solution SPSS (Statistical Package for the Social Sciences) was used to analyse data obtained from the laboratory test, field test and the study areas. The estimated mean uniaxial compressive strength value of NSCE is 240 MPa and that of Ratcon is 200 MPa and their average densities and average porosities are2.63g/cm3,2.55g/cm3, 1.88% and 2.25% respectively. Eleven parameters were input into the multiple regression analysis to generate the models. Two parameters out of eleven input parameters such as geometric volume of blast (Y1) and number of boulders generated after blasting (Y2) were dependent variables and the remaining nine such as X1 (Drill hole diameter), X2 (Drill hole depth), X3 (Spacing), X4 (Burden), X5 (Average charge per hole), X6 (Rock density), X7

Microbial Assessment of Turkey (Meleagris ocellata L.) and Duck (Anas platyrhynchos L.) Faeces (Droppings) in Akure Metropolis  [PDF]
Deke Victoria Adegunloye, Felix Abiodun Adejumo
Advances in Microbiology (AiM) , 2014, DOI: 10.4236/aim.2014.412085
Abstract: This study was carried out to determine the occurrence of bacteria and fungi in populations of turkey and duck faeces. The prevalence of bacteria and fungi in the faeces of domesticated turkey and ducks (Meleagris ocellata and Anas platyrhynchos) in the City of Akure (Nigeria) was investigated. Five different locations were sampled in Akure Metropolis in April for each of turkey and duck faeces using standard microbiological methods. The microbial load for bacteria ranged from 16.23 × 105 to 30.04 × 105 cfu/g and 12.60 × 105 to 46.01 × 105 cfu/g for turkey and duck faeces respectively while the fungal count ranged from 12.38 × 105 to 28.05 × 105 s/g and 10.60 × 105 to 34.09 × 105 s/g for turkey and duck faeces respectively. The following bacteria were isolated from turkey faeces: Azomonas agilis, Bacillus cereus, Escherichia coli, Proteus vulgaris, Sarcina maxima, Thiocapsa lumicola, Staphylococcus aureus, Enterococcus spp., Xanthomonas fragariae and Streptococcus spp. while Aeromonas hydrophila, Bacillus cereus, Echerichia coli, Proteus vulgaris, Lactobacillus spp., Sarcina maxima, Streptobacillus moniliformis, Staphylococcus aureus, Enterococcus spp and Streptococcus spp. were isolated from duck faces. Bacteria common to both turkey and duck faeces are Bacillus cereus, Escherichia coli, Proteus vulgaris, Sarcina maxima, Staphylococcus aureus, Enterococcus spp. and Streptococcus spp. The fungal species isolated includes Mucor spp., Cladosporium spp., Aspergillus fumigatus and Aspergillus flavus, Alternaria sp., Candida
Antimicrobial Resistance and Plasmid Profiles of Campylobacter Species from Infants Presenting with Diarrhoea in Osun State, Nigeria  [PDF]
Olutoyin Catherine Adekunle, Abiodun A. Onilude
Open Journal of Medical Microbiology (OJMM) , 2015, DOI: 10.4236/ojmm.2015.51003
Abstract: Antibiotic resistance among enteric bacterial pathogens complicates the heavy diarrhoea disease burden. Antimicrobial resistance of Campylobacter spp. to fluoroquinolones, which are generally used for the treatment of bacterial gastroenteritis, has increased during the past two decades, mainly as a result of the approval of this group of antimicrobials for use in food-producing animals. The aim is to determine the frequency of resistance of campylobacter to various antimicrobial agents and the relationship between antimicrobial agents of the isolates and the presence of plasmid. Twenty five Campylobacter isolates gotten from humans were subjected to antibiotics testing using Kirby Bauer disc diffusion method as well as standard E-test method. The plasmid profile of the isolates was determined using the Alkaline phosphatise procedure. The antimicrobial susceptibility testing of these isolates showed that all were sensitive to Erythromycin and Ciprofloxacin while none was sensitive to co-trimoxazole. The standard organisms were sensitive to co-trimoxazole (80%) and ciprofloxacin (65%) but were resistant to erythromycin (70%). No plasmid was found in streptomycin and ampicillin resistant strains, with the exception of four isolates which were co-trimoxazole-resistant and which contained around 24.4kb plasmids.
Molecular Evaluation of Garcinia kola Heckel Accessions Using RAPD Markers  [PDF]
Odunayo Joseph Olawuyi, Abeeb Abiodun Azeez
American Journal of Molecular Biology (AJMB) , 2019, DOI: 10.4236/ajmb.2019.92004
Abstract: The genetic relationships among twenty-five accessions of Garcinia kola using six Random Amplified Polymorphic (RAPD) primers were evaluated in this study. The highest volume of total genomic DNA (2218/μl) was recorded in ON4 from Ikare, while the highest DNA concentration of 1.93 gl was found in OS3 from Ilesa. The highest Polymorphic Information Content (PIC) and gene diversity of 93.77% and 0.94 respectively were revealed by primer OPO2 compared to other primers. The dendogram generated from Unweighted Pair Group with Mean Average (UPGMA) clustering delineated two groups, A and B, consisting of 21 and 4 accessions respectively. This study clearly showed the level of molecular diversity in the accessions and the information provided could be utilized for genetic improvement and conservation of Garcinia kola.
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