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Evaluating the quality characteristics of kunun produced from dry-milled sorghum
JA Adejuyitan, OE Adelakun, SA Olaniyan, FI Popoola
African Journal of Biotechnology , 2008,
Abstract: Kunun is a traditional beverage in Nigeria produced by wet milling from sorghum, maize or millet. This work evaluates kunun produced from dry-milled sorghum flour. The sorghum was dehulled, milled and sieved to obtain flour. The flour was steeped for 24 h and mixed with spices to produce kunun and the quality of the resultant kunun was compared with that of kunun manufactured by the wet-milling process. With dry-milling process, the yield of kunun was 80% while the yield from the wet-milling process was 60%. Titratable acidity was lower in kunun samples prepared from dry-milled sorghum (0.40%) than in the kunun manufactured by wet milling (0.55%). The pH and total soluble solid of kunun prepared from dry milled sorghum were higher (5.10 and 14.82, respectively) than kunun from wet milling process (4.12 and 13.42, respectively). Protein content recorded for dry milled sample was 5.55% and that of wet milled sample was 4.20%. Crude fibre content was also assessed to be 0.25% for dry milled sample and 0.45% for wet milled sample. Kunun samples from wet milling process were preferred to those from dry milling process. Microbial counts indicate that both samples were free from feacal contamination. Total viable count for kunun samples prepared from dry milling process was 1.0 x 04, and for wet milled sample total viable count was 1.6 x 104.
Peer Sexual Harassment And Coping Mechanisms Of Female Students In A Nigerian University
BI Popoola
Edo Journal of Counselling , 2008,
Abstract: This study was designed to investigate the prevalence and nature of peer sexual harassment among female Nigerian university students. It also examined the perception of students about peer sexual harassment and ascertained the coping mechanisms adopted by victims of peer sexual harassment. Participants consisted of 387 female undergraduate students selected by convenience sampling from three Faculties at the Obafemi Awolowo University. A self-constructed instrument with a test-retest reliability coefficient of 0.79 was administered on students to collect data on their experience and perception of peer sexual harassment as well as adopted coping strategies. The results of the study indicated that verbal harassment was the most frequent type of peer sexual harassment experienced by female students. Findings from the study also showed that most victims of peer sexual harassment did not report their harassment to authorities but adopted strategies that did not involve direct confrontation with their harassers. The study concluded that there was the need for a virile counselling programme in all Nigerian universities to stem down the incidence of peer sexual harassment and that such a programme should be targeted not only at victims but also at perpetrators of sexual harassment. Key Words: sexuality, sexual victimisation, sexual harassment, sexual oppression.
Undergraduates’ Perceptions on the Effective Dimensions of Their Preparation for the Labour Market
Afolabi Popoola
Pakistan Journal of Social Sciences , 2012,
Abstract: This study investigated students perceptions of the effective dimensions of their preparation for the labour market. A case study design was used and 140 undergraduates formed the respondent of the study. A 29 items questionnaire was used to elicit data from the respondents on 9 dimensions of their preparation. The findings of the study showed that the need for cognitive tools, meta cognitive support, collaboration and source of motivation are important in effectively preparing students for the labour market.
Vulnerability of Nigerian Secondary School to Human Sex Trafficking in Nigeria
FI Omorodion
African Journal of Reproductive Health , 2009,
Abstract: Sex trafficking contributes to the cycle of violence against women, and inflicts global social and health consequences, particularly in this era of HIV/AIDS pandemic. This paper is based on a cross-sectional survey conducted in two urban and two rural schools located in Delta and Edo states of Nigeria. The aim is to assess in-school students’ knowledge and awareness of, and attitude toward sex trafficking as a way to understanding their personal vulnerability to trafficking. A semi-structured questionnaire was administered in 2004-2005 to a classroom random sample of 689 adolescents in the age range of 16-20 years. The results show that in-school adolescents are vulnerable to sex trafficking due to poverty (77.2%); unemployment (68.4%); illiteracy (56.1%); and low social status (44.5%). Students in co-ed schools showed higher knowledge and awareness of the serious health consequences of trafficking (Afr J Reprod Health 2009; 13[2]:33-48).
Natural history of cerebral saccular aneurysms
FI Ojini
West African Journal of Medicine , 2005,
Abstract: Cerebral saccular aneurysms are relatively common, and are most commonly located at the branching points of large arteries of the circle of Willis. Many are asymptomatic and only discovered incidentally. Available evidence suggests that these aneurysms develop as a result of a combination of congenital or inherited defects weakening the arterial wall, and acquired degenerative vascular disease. It appears that most untreated cerebral aneurysms will get larger, and that all aneurysms have the potential to rupture. The only consistent significant predictor of aneurysmal rupture in most studies is the size of an aneurysm. Aneurysms less than 5mm have a very low rupture rate while those greater than 10mm have a significant risk of subsequent rupture. There is no consensus on the influence of the other reported risk factors such as hypertension, cigarette smoking and aneurysm location, on aneurysmal rupture. Those who have suffered a ruptured aneurysm are at a high risk for a recurrent haemorrhage shortly after the initial one.
Disponibilidad de arena para el refulado de las playas de Miramar y Chapadmalal, Argentina Sand availability for nourishment of the Miramar and Chapadmalal beaches, Argentina
FI Isla
Revista de la Asociación Geológica Argentina , 2003,
Abstract: Las playas de Miramar se originaron por los aportes naturales transportados directamente como médanos transversales desde el oeste, aunque estas arenas son de origen marino que llegaron a la costa por la acción de olas. Cuando ese aporte de arena mermó debido a la forestación de los médanos del Vivero Ameghino, se debió recurrir a espigones rígidos, que luego debieron ser prolongados para mantener una anchura suficiente de las playas para los requerimientos balnearios. Hoy día el repoblamiento artificial resulta el único método factible de recuperar las playas desde los sectores sumergidos o desde médanos vecinos. Utilizando un sonar de barrido lateral y muestreos de arena se analizó la distribución y calidad de las arenas sumergidas como eventual fuente de alimentación de las playas de Miramar y Chapadmalal. Se estimaron factores de relleno y recurrencia en relación a la granulometría actual de estas playas. La playa sumergida está compuesta principalmente de arena muy fina y se extiende hasta una profundidad de 10-15 m, más allá de la cual se descubren afloramientos de limos entoscados hasta la profundidad de aproximadamente 20 metros. Otro sector arenoso se extiende a profundidades mayores y está dominado por fajas de arena orientadas hacia el NE. Lamentablemente, estas arenas son demasiado finas y por lo tanto no resultarían económicamente aptas para repoblar las playas de Miramar y Chapadmalal. The beaches of Miramar were originated by the migration of transverse dunes from the west of the city, although the provenance of the sand is of marine origin and deposited by wave action. When this input of sand diminished significantly due to the dune fixation at the Ameghino Nature Reserve, a groyne field was emplaced and, after several years, extended to provide a minimum beach width for tourist requirements. Today, artificial beach nourishment is the only method to guarantee enough sand from the near-shore. The distribution and quality of the sand as a source for the replacement of the Miramar and Chapadamalal beaches were analyzed By the mean of a side-scan sonar surveys and drag samples. Nourishment and recurrence factors were estimated in relation to the grain-size distribution on these beaches. Present near-shore beaches are composed of fine sand and extend to a depth of 10-15 m. Farther offshore there are indurated silts extending as submerged platforms to a depth of 20 m. There is another sandy bottom at a lower depth that is dominated by sand ribbons oriented toward the NE. Unfortunately, these sands are too fine and therefore considered economic
Aspects regarding the importation on its own at the societies of foreign trade
Scortescu FI
Scientific Annals of the Alexandru Ioan Cuza University of Iasi : Economic Sciences Series , 2005,
Application of Artificial Neural Networks Based Monte Carlo Simulation in the Expert System Design and Control of Crude Oil Distillation Column of a Nigerian Refinery  [PDF]
Lekan T. Popoola, Alfred A. Susu
Advances in Chemical Engineering and Science (ACES) , 2014, DOI: 10.4236/aces.2014.42030

This research work investigated comparative studies of expert system design and control of crude oil distillation column (CODC) using artificial neural networks based Monte Carlo (ANNBMC) simulation of random processes and artificial neural networks (ANN) model which were validated using experimental data obtained from functioning crude oil distillation column of Port-Harcourt Refinery, Nigeria by MATLAB computer program. Ninety percent (90%) of the experimental data sets were used for training while ten percent (10%) were used for testing the networks. The maximum relative errors between the experimental and calculated data obtained from the output variables of the neural network for CODC design were 1.98 error % and 0.57 error % when ANN only and ANNBMC were used respectively while their respective values for the maximum relative error were 0.346 error % and 0.124 error % when they were used for the controller prediction. Larger number of iteration steps of below 2500 and 5000 were required to achieve convergence of less than 10-7 for the training error using ANNBMC for both the design of the CODC and controller respectively while less than 400 and 700 iteration steps were needed to achieve convergence of 10-4 using ANN only. The linear regression analysis performed revealed the minimum and maximum prediction accuracies to be 80.65% and 98.79%; and 98.38% and 99.98% when ANN and ANNBMC were used for the CODC design respectively. Also, the minimum and maximum prediction accuracies were 92.83% and 99.34%; and 98.89% and 99.71% when ANN and ANNBMC were used for the CODC controller respectively as both methodologies have excellent predictions. Hence, artificial neural networks based Monte Carlo simulation is an effective and better tool for the design and control of crude oil distillation column.

Microorganisms Associated with Vegetable Oil Polluted Soil  [PDF]
Bukola Margaret Popoola, A. A. Onilude
Advances in Microbiology (AiM) , 2017, DOI: 10.4236/aim.2017.75031
Abstract: Vegetable oil Spills are becoming frequent and are potentially more challenging than petroleum hydrocarbon spills. Microbial lipases occupy a place of prominence among biocatalysts are often used for remediation of vegetable oil-polluted sites. This work was carried out to isolate microorganisms from oil-polluted sites and screen them for their lipolytic activity. Microorganisms were isolated from eight experimental soil samples contaminated with different types of vegetable oil, soil from an oil mill in Ibadan, and normal uncontaminated soil as a control. The isolates were characterized, identified and those common to at least one of the experimental sites and oil mill sites were screened for their lipolytic activity. Data obtained were analysed using Duncan Multiple Range Test. Seventy three microorganisms were isolated from the polluted soil and identified as species of Bacillus (16), Pseudomonas (12), Flavobacterium (6), Alcaligenes (2), Proteus (3), Micrococcus (1), Aspergillus (9), Penicillium (6), Saccharomyces (4), Geotrichum (1), Kluveromyces (1). Bacillus subtilis, Bacillus licheniformic, Pseudomonas cepacia, Pseudomonas fluorescens, Flavobacterium sp., Alcaligenes sp. and Candida parapsilosis which were common to at least one of the experimental site and oil mill site were preliminarily screened for lipolytic activity and all nine confirmed by presence of halos around the colonies. These screened organisms have potential for the degradation of fatty waste. They could therefore be employed in environmental clean-up of vegetable oil spill site.
Mycoflora and mycotoxins in kolanuts during storage
LO Adebajo, OJ Popoola
African Journal of Biotechnology , 2003,
Abstract: The mycoflora, levels of afllatoxins and the presence of ochratoxin A and zearalenone in nuts of Cola acuminata and C. nitida were determined immediately after curing and after 3, 6 and 9 months of storage in leaf-lined baskets. Five field fungi and 11 storage fungi were isolated. Aspergillus, Penicillium and Fusarium were the predominant genera. None of the target toxins was detected immediately after curing. Increasing quantities (5 to 160 ppb) of each of the aflatoxins B1, B2, G1 and G2 were recorded as from the 3rd month while zearalenone and ochratoxin A were detected only after the 6th and 9th month, respectively.
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