Browsing by Author "Bamiro, O. A."

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The development of an analyses-intensive software for improved cams systems design
(2008-04) Simolowo, O. E.; Bamiro, O. A.
The computer-aided software developed in this research work is used in designing cam systems by generating various follower motions and cam profiles. It is highly suited for extensive dynamics, kinematics and geometric design analysis based on some inherent features that are unique. The plate cam with either flat-face or roller followers can be designed. Most of the standard and acceptable cam functions are included such as double harmonic, modified trapezoidal, cycloid, 4-5-6 polynomial and others. Various prime circle radii and follower face widths are calculated for flat-face follower design option for any user selected cam angle, follower profile and cam function. Other parameters such as minimum and maximum values of radii of curvature, pressure angle, are also calculated for roller follower design option. In every design the follower motion and cam profiles are calculated and coordinate files can be exported in Cartesian format and automatically imported into a spreadsheet package thereby using all its features for better analysis of results. All dynamic, kinematics and geometric parameters can be plotted and all data may be printed to the screen, to a printer, or to a file.
Development of indigenous manufacturing infrastructure in Nigeria: a case: study of the pace-setter organic fertilizer plant
(2008) Fadare, D. A.; Bamiro, O. A.; Adeoye, G. O.; Sridhar, K. C.
This paper presents the overview of the research and development (R&D) of the Pace-setter organic fertilizer plant. The plant, is owned, funded and managed by the Oyo State Government through the Ministry of Environment. The plant is located at the Bodija Market in Ibadan North Local Government area. The 10 tons/day capacity plant, designed and constructed (using locally sourced materials, was installed and commissioned in the year 1998. About 35 - 50 tons/day of solid waste consisting of Market Refuse (MR) and Abattoir Waste (AW) generated within the market are used as raw materials for the production of organic fertilizer. The plant is semi-mechanised as sorting and turning are done manually while the processing of the compost into finish products is done mechanically. The processing plant consists of six different units: shredding, screening; pulverizing, mixing, pelletising and bagging. Two grades of organic fertilizer (A and B) are produced in the plant. Grade A is fortified, grade B is unfortified. Both grades are produced in either powder or pellet form. The estimated man-power and electric-energy requirement of the plant are about 25 persons and 70KW respectively. A 50 kg bag of grade 'A' organic fertilizer is sold for about #700, while the unfortified grade 'B' is sold for about #500 per bag. The plant has proven to be commercially viable in terms of employment and income generation and equally as sustainable solution to the problem of solid waste management.
Effect of compression pressure, preservative, and storage with potassium chloride on the microbiological quality of tablets formulated with terminalia randii gum (combretaceae)
(2012-10) Oluremi, B. B.; Bamiro, O. A.; Idowu, A. O.; Oduneye, O. A.
Gums are used as binders in tablets and also as emulsion stabilisers, suspending agents and thickeners in syrups. The need for other natural gums apart from the conventional gums to be employed as binding agents in tablets formulation led to this study. A gum obtained from the incised trunk of Terminalia randii (Combretaceae) was evaluated for the effect of compression pressure, Methyl Paraben preservative and storage with Potassium Chloride, on the microbial load of tablets formulated with the gum. The microbial load was determined by surface spread method on the processed gum at suitable dilutions, and tablets formulated from the gum at different compression pressures. The formulated tablets were evaluated for microbial load, also when stored in Potassium Chloride for 8 and 12 weeks with and without preservation with 1% Methyl Paraben. In each case the compressed tablets were incubated in 0.1% peptone water as control. The microbial load recorded reflected generally, reduction in microbial counts in tablets formulated with the gum as a binder both in terms of compression at different pressures and when the different compression pressures were associated with or without 1% Methyl Paraben in the presence of Potassium Chloride. Comparatively, the processed gum showed higher microbial load than the pressure compressed tablets. Besides the different compression pressures, duration of storage was also found to cause reduction of microbial load, particularly in the formulated tablets compressed with Methyl Paraben stored in Potassium Chloride such that after 8 weeks, the microbial load was zero. The studies showed that compression pressures and duration of storage caused marked reduction in microbial load of the tablets formulated with the processed gum of Terminalia randii as a binder.
Energy analysis for production of powdered and pelletised organic fertilizer in Nigeria
(Asian Research Publishing Network, 2006-06) Fadare, D. A.; Bamiro, O. A.; Oni, A. O.
Energy study was conducted in an organic fertilizer plant in Ibadan, Nigeria, to determine the energy requirement for production of both powdered and pelletised organic fertilizer. The energy consumption patterns of the unit operations were evaluated for production of 9,000 kg of the finished products. The analysis revealed that eight and nine defined unit operations were required for the production of powder and pellets, respectively. The electrical and manual energy required for the production of powdered fertilizer were 94.45 and 5.55% of the total energy, respectively, with corresponding 93.9 and 5.07% for the production of pelletised fertilizer. The respective average energy intensities were estimated to be 0.28 and 0.35 MJ/kg for powder and pellets. The most energy intensive operation was identified as the pulverizing unit with energy intensity of 0.09 MJ/kg, accounting for respective proportions of 33.4 and 27.0% of the total energy for production of powder and pellets. Optimisation of the pulverizing process is suggested to make the system energy efficient.
Energy analysis of an organic fertilizer plant in Ibadan, Nigeria
(Asian Research Publishing Network, 2009) Fadare, D. A.; Bamiro, O. A.; Oni, A. O.
Energy study was conducted in an organic fertilizer plan in Ibadan, Nigeria, to determine the energy requirement for production of both powdered and pelletised fertilizer. The energy consumption patterns of the unit operations were evaluated for production of 9,000 kg of the finished products. The analysis revealed that eight and nine defined unit operations were required production of powder and pellets, respectively. The electrical and manual energy required for the production of powder were 94.45 and 5.55% of the total energy, respectively, with corresponding 93.9 and 5.07% for the production of pelletised fertilizer. The respective average energy intensities were estimated to be 0.28 and 0.35 MJ/kg for powder and pellets. The most energy intensive operation was identified as the pulverizing unit with energy intensity of 0.09 MJ/kg, accounting for respective proportions of 33. 4 and 27.0% of the total energy for production of powder and pellets. Optimisation of the pulverizing process is suggested to make the system energy efficient.
Organic and organo-mineral fertilizer from wastes
(2006-11) Sridhar, M. K. C.; Adeoye, G. A.; Fadare, D. A.; Bamiro, O. A.
The pharmaceutical quality of brands of metformin tablets in Ogun-State, Nigeria
(2014-01) Ajala, T. O.; Adebona, A. C.; Bamiro, O. A.
The pharmaceutical quality of randomly selected brands of metformin tablets used (prescribed or dispensed) by Community Pharmacists and Doctors in Ogun state, southwestern Nigeria, were evaluated. Eight brands were randomly procured from community pharmacies after administering a pre-tested semi-structured questionnaire to 100 Pharmacists and 15 Physicians across different local government areas in Ogun state, South Western part of Nigeria. The physicochemical properties of the different brands were analysed using the Pharmacopoeia standard. The results showed that Pharmacists’ choice of stocking was based mainly on clients’ demand and quality, while doctors prescribe what is made available by the hospital pharmacy. Out of the eight brands assessed, seven are pharmaceutically equivalent and can be substituted for one another. However, there were quality variations from brand to brand. The ranking of crushing strength for the metformin brands was H>>>G>E>F>D>B>C>A, while the trend for friability was D>>>E>C>H>A>G>F>B. The trend of disintegration time among the brands was D>G>C>E>A>F>B>H and ranking of CSFR/DT was H>>B>F>G>A>E>C>>D. Two brands (D and E) failed the friability test while brand D had significantly lower balance of mechanical and release properties as determined by CSFR/DT. There is therefore a continuous need for random assessment of the quality of metformin brands by regulatory bodies to ensure compliance to specifications. `
The planning and writing of grant-oriented research proposals
(The Postgraduate School, University of Ibadan, Ibadan, 2010) Bamiro, O. A.; Oladepo, O.; Olayinka, A. I.; Popoola, L.; Soyibo, A.
Profile simulation software for trigonometric and polynomial cams design
(2007) Simolowo, O. E.; Bamiro, O. A.
This paper discusses the development of unique software for the design of various cam profiles for the plate cam operating a flat face follower. The method employed in this work is that of generating geometrical cam coordinates using standard cam motions, thereby avoiding the problem of undercutting resulting from graphical layout methds for similar cam and follower types. Determination of critical design output parameters were carried out by the developed software computational algorigthm. The software was validated by using it to simulate a number of standard cases. For the standard case having the follower profile Dwell(200o)-Rise (280o)-Dwell(300o)-Return(360o)and performing cycloid rise and return motion, the prime circle radius for the cam profile and face width of the follower were calculated as 55.72mm and 33.76mm while the maximum and minimum follower velocities were 13.70mm/rad and -10.27mm/rad respectively. These values, as well as those obtained for other standard cases simulated, were found to be in agreement with earlier works done in this area of research
A short excursion into the energy supply mix in Nigeria
(University of Lagos Press, 2012) Diji, C. J.; Bamiro, O. A.
Abundant energy supply is the lifeblood of modern civilization. Energy poverty arising from poor management despite appreciable energy resource base continues to be a major constraint on the socio-economic development of Nigeria. The crucial challenge of the energy sector in the country includes inadequate energy supply, its security and sustainability. In this paper we briefly examine the roles of the major primary energy forms in the country as well as some of the alternative energy sources in the provision of adequate energy supply to meet the growing demand. The paper posits that poor energy mix, slow implementation of policies and inadequate private sector participation are the major constraints and challenges of the energy sector. Concerted efforts towards addressing these challenges will go a long way in solving the endemic energy problem in the country.