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Search Results: 1 - 10 of 90716 matches for " Azubuike I. Irene "
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Forecasting Oil Formation Volume Factor for API Gravity Ranges Using Artificial Neural Network
Azubuike I. Irene,Ikiensikimama S. Sunday
Advances in Petroleum Exploration and Development , 2013, DOI: 10.3968/j.aped.1925543820130501.996
Abstract: The Oil Formation Volume Factor (FVF) parameter is a very important fluid property in reservoir engineering computations. Ideally, this property should be obtained from actual measurements. Quite often, this measurement is either not available, or very costly to obtain. In such cases, empirically derived correlations are used in the prediction of this property. This work centers on building an artificial neural network (ANN) model to predict oil formation volume factor for the different API gravity ranges. The new models were developed using combination of 448 published data from the Middle East, Malaysia, Africa, North Sea, Mediterranean basin, Gulf of Persian fields and 1389 data set collected from the Niger Delta Region of Nigeria. The data have been divided into the following four different API gravity classes: heavy oils for API≤21, medium oils for 21 oils for 26 light oils for API>35. The data set was randomly divided into three parts of which, 60% was used for training, 20% for validation, and 20% for testing for each particular API grade. Both quantitative and qualitative assessments were employed to evaluate the accuracy of the models to the existing empirical correlations. The ANN models outperformed the existing empirical correlations by the statistical parameters used with the best rank and better performance plots. Key words: Oil formation volume factor; Artificial neural network; Back propagation; Statistical analysis; API gravity ranges
Land Use limitations and management option for a Savanna Zone Alfisol
Azubuike Chidowe Odunze,I. Kureh
Journal of Agriculture and Environment for International Development , 2011,
Abstract: A 50 by 50 m rigid grid survey of part of the Institute For Agricultural Research (IAR) farm in Zaria (11° 10’N and 7°35’E) was carried out to characterize the morphological, physical and chemical properties of soils at the site. Quick crosschecks in areas outside the rigid grid but having seemingly varying soil units was also studied in the field. Two soil units (‘Oxyaquic Vertic Paleustalfs / Gleyic Lixisol’ and ‘Aquic Kandiustalfs / Gleyic Lixisols’) were delineated. Soil samples were obtained from identified horizons of each pedon, air dried, sieved through 2.0mm sieve to obtain sub samples less than 2.0mm for laboratory analysis. Results obtained showed soils of the ‘Oxyaquic Vertic Paleustalfs / Gleyic Lixisol’ to have within its subsoil ‘Argillic’ pedogénetic features, mottling and ‘Gleyic’ properties, and no subsoil acidity problems. The subsoil has increasing clay with depth, and temporary stagnation of water. Soil condition in this unit would however be improved for sustainable crop production by liming and /or incorporation of farmyard manure, contour ridging and construction of field drainage ditches to conduct excess field and subsoil stagnated water away from the fields. Soils of the ‘Aquic Kandiustalfs / Gleyic Lixisols’ have ‘Kandic’ subsoil properties, ‘Gleyic’ and mottled subsoil horizons at shallow depths to the surface horizons, and exchange acidity (H++Al3+) values ranging between 0.6 and 1.4 cmolkg -1, suggesting acid soil problem in this unit. Also, extractable Zn values were very high and could adversely affect growth and production of crops. This problem would be corrected by liming, adequate drainage to remove stagnating subsoil and excess field water, and incorporation of farmyard manure to enhance the soils’ nutrient availability/exchange capacity, control soil acidity build up and improve aeration conditions in the plow layer.
Impacts of Zoological Garden in Schools (A Case Study of Zoological Garden, Kano State Nigeria)  [PDF]
Azubuike Adams, Azubuike Amarachi Salome
Open Journal of Ecology (OJE) , 2014, DOI: 10.4236/oje.2014.410051

In the course of this work which is the impact of zoological garden in schools, the questionnaire interviewed was used in the collection of data. Based on the finding it was observed that people visit zoological gardens for different purposes like educational, recreational, research, economic and cultural values. Also the chi-square (X2) is used in this research to show if there is significant difference or not. Result indicated that people from various works of life visited the zoo. Some recommendations were also made for further studies as well as the opposition of establishment of a zoo. Thus, the objectives of the this work are to identify the conservation areas in which zoos make a contribution, to develop understanding and support of the conservation potentials of zoos, to convince local zoos and conservation agencies that they can make important contributions to conservation, to help zoos formulate conservation priorities and policies and finally, to promote action of individual zoos by participation in the global zoo and other conservation network.

Students’ Common Difficulties in Manipulating Microscope Selected Schools in Kano State, Nigeria  [PDF]
Adams Azubuike, Amarachi Salome Azubuike
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.513127

This work was conducted to find out the students’ common difficulties in manipulating microscope. Questionnaires were used for relevant and required data collections. The data collected were processed and analyzed using simple percentage. The findings were discussed and recommendations were provided for the benefit of research students and teachers. The objectives of this work are to reveal some common difficulties on manipulating microscope, their causes and finally suggest solutions to check these difficulties or to overcome them. This work was carried out with 50 students in level 100 from biology department. Tables 4-11 show the summary of the responses of these students on the questions asked about microscope while Tables 1-3 summarize the personal data of these students.

Factors Affecting the Choice of Science Subjects among Female Students in Jigawa Metropolis, Nigeria  [PDF]
Azubuike Adams, Azubuike Amarachi Salome
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.514148

The work is to investigate the factors affecting the choice of science subjects among female students at the senior secondary level in Jigawa metropolis. There are factors that influence the choice of science subject among female students. Some of the factors are the sex of the students, peer group influence, motivation and the choice of a future career. In order to analyze some of these factors and their effect on female students in Jigawa metropolis, questionnaires were administered to female school of SS II and SS III in some randomly selected secondary schools. The hypothesis were tested; the use of data obtained from the questionnaires administered; and results presented in Tables 6-9.

Evaluation of Safety Practices in Biology Laboratories in Selected Secondary Schools within Gumel Emirate, Jigawa State, Nigeria  [PDF]
Azubuike Adams, Azubuike Amarachi Salome
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.514145
Abstract: The work was carried out to find out the extent the teachers and students are aware of safety practices and device while working in the biology laboratories during practical sessions. The research questions were answered and the significant of the work was outlined. The methodology was thoroughly explained; sets of questionnaires were used for teachers and students, followed with interviewed. These methods were used as a means of data collection. Ten (10) secondary schools were selected randomly for the work. A total of twenty-three (23) biology teachers and one hundred (100) students were used. The data collected were analyzed, which revealed that 71%of the students and 73% of the teachers have good knowledge of safety practices in biology laboratories. Majority of the biology teachers in the selected secondary schools are Bsc Ed holders, with the number constitutes 65% with (5 - 10) years working experiences. Majority of the selected biology laboratories have inadequate first aid kits. The only available items were cotton wool, bandage, Delton solution and iodine solution. The finding revealed that teachers and students in the selected schools have good knowledge of safety practices. However, majority of the schools lacked safety gadget and inadequate first aid kits.
Antibacterial and Wound Healing Properties of Methanolic extract of dried fresh Gossypium barbadense Leaves
Chukwuemeka Azubuike
Asian Journal of Biomedical and Pharmaceutical Sciences , 2012,
Abstract: This study was conducted to evaluate the antibacterial and wound healingproperties of methanolic extract of dried fresh leaves of Gossypiumbarbadense. The antibacterial properties of the extract were studied againstfive wound isolates (Pseudomonas aeruginosa, Staphylococcus aureus,Escherichia coli, Proteus mirabilis, and Shigella sonnei) using the Welldiffusion method. The wound healing properties were carried out using theexcision wound model on healthy albino rats.The results showed that methanolic extract of dried fresh Gossypiumbarbadense leaves had a dose dependent activity against all the testorganisms except Escherichia coli. The extract solvent, propylene glycol, usedas a negative control, had no activity against any of the test organisms.Dettol antiseptic, and Cicatrin powder used for the positive control also hada dose dependent activity against all the test organisms except Escherichiacoli and Pseudomonas aeruginosa. The concentrated Dettol (i.e. theundiluted solution) however inhibited growth of all test organisms.Comparing all test substances, it was observed that after ten days oftreatment of the rats that when the extract was applied at a concentration of20mg/ml, there were about 91% healing of wound on the rats whereas about80 % healing of wound on the rats was noticed for Cicatrin powder. Thedistilled water used as a negative control however produced only about 36 %healing of wound on the rats. The distilled water treated group percentagehealing of wounds was significantly different (p< 0.05) from those of extractand antibacterial-treated groups.
Effects of Nutrient Sources and Environmental Factors on the Cultivation and Yield of Oyster Mushroom (Pleurotus ostreatus)
V.I. Ibekwe,P.I. Azubuike,E.U. Ezeji,E.C. Chinakwe
Pakistan Journal of Nutrition , 2008,
Abstract: Oyster mushroom (Pleurotus ostreatus) was cultivated on different carbohydrate substrates (millet, corn, rice and rye). Millet gave the highest mycelia yield while rye gave the lowest. Further growth on different concentrations of millet extract showed that 1.00 mg mL-1 concentration of millet extract gave an optimum mycelia growth of 4.0 mg mL-1. Cultivation of the mushroom on different nitrogen sources namely, lima beans extract, soya beans (Glycine max) and vigma species (brown beans) showed that soya beans (Glycine max) gave the highest mycelia yield while lima beans gave the lowest yield. Optimum mycelia yield was also achieved at pH 6.5. This study shows that given the right substrate and optimal environmental conditions, oyster mushroom can be mass-produced to the meet the nutritional requirement of the Nigerian populace.
The accessory parameter problem in positive characteristic
Irene I. Bouw
Mathematics , 2007,
Abstract: We study the existence of Fuchsian differential equations in positive characteristic with nilpotent p-curvature, and given local invariants. In the case of differential equations with logarithmic local mononodromy, we determine the minimal possible degree of a polynomial solution.
Construction of covers in positive characteristic via degeneration
Irene I. Bouw
Mathematics , 2007,
Abstract: In this note we construct examples of covers of the projective line in positive characteristic such that every specialization is inseparable. The result illustrates that it is not possible to construct all covers of the generic r-pointed curve of genus zero inductively from covers with a smaller number of branch points.
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