Isah O.R.,Minna Federal University Of Technology |
Usman A.D.,Kaduna Polytechnic |
Tekanyi A.M.S.,Ahmadu Bello University
International Journal Bioautomation | Year: 2017
Polycystic Ovarian Syndrome (PCOS) is one of the leading causes of infertility in the world, but is a preventable disease when detected early. Detection of follicles in ultrasound images of the ovary is required for the diagnosis of PCOS. The manual method of detecting follicles is time consuming, laborious, error-prone and inconvenient for patients. However, methods used by the existing automated systems often lead to a reduction in accuracy, sensitivity and specificity due to the irregular and jagged edges of the follicles. This research work aims at achieving an improved specificity, sensitivity and accuracy of the system. In this report, a new technique for the automatic detection of follicles is implemented. Lee filter was used to despeckle the ultrasound images. Multiple features were then extracted from the images. Further, twelve of these features were selected as optimal values by the Particle Swarm Optimization algorithm. Then, these features were fed as input to the Multilayer Perceptron Artificial Neural Network. Upon training and testing the network, 98.3% accuracy, 100% sensitivity and 96.8% specificity were achieved. © 2017 by the authors.
Dasin D.Y.,Modibbo Adama University of Technology, Yola |
Aliyu A.S.,Kaduna Polytechnic |
Godi N.Y.,Modibbo Adama University of Technology, Yola
2015 6th International Renewable Energy Congress, IREC 2015 | Year: 2015
A parabolic solar cooker was designed to cook four different types of common food stuffs (White rice, Parboiled rice, Beans and Yam), characterized the food items and to reduce continuous reliance on conventional source of energy for cooking. The test performance of the solar cooker was carried outin Bauchi, North-East, Nigeria to ascertain the level of its performance when it was place under the sun and positioned and position in the east-west orientation at a slope of 10.3°. The research revealed that 1 kg of white rice was completely cooked in 1 hour 15 minutes at an average beam radiation of 623W/m2 after attaining maximum temperature of 368K under clear weather condition. Parboiled rice of 1 kg was completely cooked in 1 hour 15minutes at the same average beam radiation of 623W/m2 after attaining maximum temperature of 367K. Beans of 1 kg was cooked at an average beam radiation of 536.5W/m2 in 1 hour 30minutes at an average wind speed of 0.5m/s, and Yam of 1.1kg was cooked in just 1 hour 30 minutes at very low beam radiation of 430.1 W/m2. The highest temperature reached for this test was 364K. It was established that this type of parabolic solar cooker can comfortably cooked these varieties of our local dishes within the range of 1 hour to 1 hour 30minutes under clear weather condition in the Bauchi, north-east of Nigeria. In view of the significance of this research and looking at the cost of energy in the developing nations, the researchers are convince that the parabolic solar cooker is an answer to the perennial energy needs facing the poor and will also go a long way in reducing the cost of energy particularly amongst local and urban dwellers in Nigeria. © 2015 IEEE.
Gatugel Usman Z.,Kaduna Polytechnic |
Abbasoglu S.,Cyprus International University |
Tekbiyik Ersoy N.,Cyprus International University |
Fahrioglu M.,Middle East Technical University
Energy Policy | Year: 2015
Nigeria has been plagued with acute power shortages due to poor performance of its power sector. Several policies and reforms have been implemented by the government to address the poor performance of the power generation, transmission and distribution sectors of the electricity industry. Also various strategies were employed by the government which includes encouraging private sector participation, diversification of the energy generation sources and promoting energy efficiency for sustainable development. In addition the government has spent billions of dollars since 2001 in the construction of new power generation facilities, transmission lines and distribution centers to boost the power supply. It has deregulated the generation and distribution sectors to encourage private sector participation and empowers the Energy Commission of Nigeria to embark on programs and strategies that can boost energy generation from renewable sources. This paper examined the country's energy sources and the power sector reforms adopted by the government. The paper also outlined some recommendations based on reforms implemented by other countries with similar resources to Nigeria which yielded positive results. © 2015 Elsevier Ltd.
Stephen G.,Kaduna Polytechnic |
Alkali S.C.,University Of Maiduguri
Research Journal of Applied Sciences, Engineering and Technology | Year: 2014
Thirty Vertical Electrical Sounding (VES) points were sited on the alluvial plain of Madagali fadama area. This was aimed at establishing the lithological character of the drainage plain and its contributions to the growth of sugar cane. 1X1D shareware package was used to interpret the curves. Over the floodplain, potential recharge water into the subsurface units probably takes place through migration routes of coarse-grained colluvial deposits which act as effective soak away for surface runoff. The nature of the basin and/or the transporting routes conditioned the thickness of the surface layer. Effects of near surface bedrock or buried granite boulders disengaged from nearby hills are demonstrated by sandwiching of the bedrock in place in the second resistivity layer. Closely spaced iso-ohmic contour values suggest presence of different types of sediments within the medium of deposition. The high thickness associated with this horizon suggests that the basin was large enough to contain the sediments. Clay materials in the third resistivity layer occur as lens bodies within sandy material. Clay free sand and gravel constitute a great proportion of the stratigraphy. Parts of the bedrock's summits that approached the surface at two separate places are resistant to weathering. Thicker sediments were available where sandy and gravelly materials prevailed. Gradual increases in thickness of the sediments suggest a gentle sloping depositional basin. Sharp gradation of the grain size from clay to bedrock within the fourth resistivity layer depicts a basin that did not permit transportation of the material far from its source. Three zones of groundwater potentials were identified from the total longitudinal conductance and the porosity maps of the area. These were based on the weathered products that constitute the aquifer zone where thick saturated sand and gravel are associated to deep aquifer development and thin saturated sand and gravel to bedrock highs. The contributions of the overburden to sourcing groundwater probably attracted Madagali community to the area and promote the growth of sugar cane in the fadama. © Maxwell Scientific Organization, 2014.
Mtallib M.O.A.,Bayero University |
Bankole G.M.,Kaduna Polytechnic
Electronic Journal of Geotechnical Engineering | Year: 2011
This work presents experimental results of a research carried out on lime stabilized lateritic soils using rice husk ash as admixture. The index property tests classified the soils as (A-7-6) under the AASHTO soil classification scheme. Thus, the material is deemed inadequate for use as a road pavement base or sub-base. Index and geotechnical properties tests conducted on the soil containing lime and rice husk ash combinations shows significant improvement in properties. The Atterberg limits were significantly altered with lime and rice husk ash combination; the plasticity of the soils significantly reduced from 18.10 to 6.70 for sample A and 26.6 to 5.92 for sample B at 6 % lime and 12.5% RHA combination. In terms of compaction characteristics, addition of lime and rice husk ash decreased the maximum dry density and increased the optimum moisture content. At 8% lime and 12.5% RHA, the values of MDD for samples A and B are 1.27 and 1.22 Mg/m3 respectively. The California Bearing Ratio (CBR) values peaked at 50%unsoaked values for 8 % lime and 10 % RHA combinations for sample A while that of sample B was 30% at 6% lime and 12.5% RHA combinations. The values do not meet the requirement for good quality base or sub-base pavement materials for major or urban roads. Stabilized sample A however suffices for use as road-base and subbase for lightly trafficked minor roads (CBR ≥45% for minor road). © 2011 ejge.
Ibrahim S.,Ahmadu Bello University |
Nok J.A.,Ahmadu Bello University |
Abubakar M.S.,Ahmadu Bello University |
Sarkiyayi S.,Kaduna Polytechnic
Research Journal of Applied Sciences, Engineering and Technology | Year: 2012
The aim of the study is to investigate the efficacy of Di-n-octyl phthalate isolated from Ceiba pentandra leaves extract for its anti Echis ocellatus venom properties. The leaves of Ceiba pentandra was extracted with aqueous methanol, partitioned on column chromatography and subjected to TLC and preparative TLC. The isolate was tested for its anti venom activity and submitted to IR and GCMS for structural elucidation. Our findings revealed that the isolate was biologically active in inhibiting PLA 2 activity in a dose dependent manner. The IR analysis showed that the isolate has a carbonyl functional group and aromatic ring and the GCMS analysis revealed that the compound isolated was Di-n-octyl phthalate with molecular weight 391. The inhibitor (Di-n-octyl phthalate) isolated during this research might become a highly effective therapeutic agent for the reducing of snake bite envenomation. The relevance of these findings would be of importance in the area of development of anti snake bite drugs that are going to be effective, cheap, accessible and less allergic plant compound that can be scientifically explored. © Maxwell Scientific Organization, 2012.
Lori J.A.,Ahmadu Bello University |
Myina O.M.,Ahmadu Bello University |
Ekanem E.J.,Ahmadu Bello University |
Lawal A.O.,Kaduna Polytechnic
Research Journal of Applied Sciences, Engineering and Technology | Year: 2011
The main aim of this study is to synthesize porous carbon adsorbent from chemical precursor in order to prevent metal impurities that are commonly associated with porous carbon adsorbents derived from agricultural residues. Deferrated kaolinite was used as a template material for the synthesis of porous carbon adsorbent from polyfurfuryl alcohol (PFA). The structural and adsorption characteristics of the adsorbent were investigated using Fourier transform infrared (FT-IR) spectroscopy and methylene blue adsorption. FT-IR spectra showed that calcination of the kaolinite impregnated with polyfurfuryl alcohol, at 500°C ensured carbonization of the polymer (between kaolinite layers) but did not collapse the mineral layer structure which is required for the creation of pores in the templated carbon. Results from the adsorption studies showed that for all the different initial concentrations of the methylene blue, the templated carbon had higher adsorptive capacity than non templated carbon from carbonized free polyfurfuryl alcohol. © Maxwell Scientific Organization, 2011.
Osinubi K.J.,Ahmadu Bello University |
Medubi A.,Kaduna Polytechnic |
Eberemu A.O.,Ahmadu Bello University
Geotechnical and Geophysical Site Characterization 4 - Proceedings of the 4th International Conference on Site Characterization 4, ISC-4 | Year: 2013
Data from borings in six states of the North Central geo-political zone of Nigeria and the Federal Capital Territory (FCT) were used to develop geotechnical models for planning and decision making. Field and laboratory results were used for the geotechnical characterization and geotechnical mapping of the area. The subsurface materials show predominance of silts, sands, silty clays, silty sands, sandy clays, clayey sand, laterite, lateritic clays and concretionary laterite. In the basement formations, weathered rocks of various degrees of decomposition (slightly, moderately and highly weathered) underlie the overburdens that are also underlain by fresh basement rocks. The sedimentary formations that predominate in parts of two of the states in the study area (i.e., Benue and Niger states) are made up predominantly of fine sands, dense sands that are underlain by shale and sandstone. Wide variability in the parameters were observed as the N and bearing capacity values are in the ranges 2-100 and 20-1000 kPa respectively. Isoline maps of N-values, bearing capacities and allied geotechnical parameters at depths of 0.6, 2.1 and 3.6 m predominantly used for placement of foundations in the zone are presented. The models and maps developed are recommended for use at the feasibility and planning stages of infrastructural development projects. © 2013 Taylor & Francis Group.
Ibrahim M.O.,Kaduna Polytechnic |
Abdul U.B.,Kaduna Polytechnic |
Otaru K.U.,Kaduna Polytechnic
Electronic Journal of Geotechnical Engineering | Year: 2016
This study adopted experimental design to investigate the suitability of abandoned solid waste site soil (ASWSS) as a foundation material for building construction. Measurements of geotechnical properties of stratified random soil samples of ASWSS and adjoining natural soil (NS) at depths 1.5, 2.0, 2.5, 3.0 and 3.5 m were obtained from three test points in Kaduna, Nigeria. The soil samples were subjected to triaxial test and chemical characterization. Data treatment of ASWSS was carried out by applying 15% upper trim and 15% lower extended mean. These were done to forestall the effects of 'reinforced earth scenario' (unusual high strength spots caused by mix matrices of soil and non-soil materials) and unnoticed randomly distributed weak spots. Design data were evaluated in accordance with the provision of European code (Eurocode 7). The responses of ASWSS and NS to loadings were investigated by carrying out spread foundation designs on both of them using the same loading and geometric conditions. Despite the record of small probability of failure of 0.00013, corresponding to reliability index of 3.75, there were few cases of zero reliability indices corresponding to probability of failure of 0.5 on ASWSS. Sulphate resistant cement, large reinforced concrete basement or foundations covering large areas and a minimum foundation depth of 2.0 m are recommended for all structural foundations built on abandoned solid waste sites. © 2016 ejge.
Medubi A.,Kaduna Polytechnic
Electronic Journal of Geotechnical Engineering | Year: 2013
Foundation studies, analyses and design work for a proposed office development in the central area of the Federal capital city (FCC) of Nigeria is presented herein. Extensive field works, laboratory tests and analyses as well as analyses of the deduced data were involved in the work. Specifically, a total of three (3 Nos.) rotary drillings with rock coring was carried out in addition to twenty (20 Nos.) mechanised percussion drilling with standard penetration test (SPT). The former were done up to 15- 19.5m while the latter were carried out to maximum depths of between 8.15 - 9.65m. The materials proved from both sets of borings include silty sand, sandy silt, laterite, lateritic clay and concretionary laterite. Weathered and fresh basement rock were recovered between 9 - 19.5m. Geophysical survey results show extensive fractures which are water bearing. Consequently, water table was high (between 0.9 - 2.1m) compared to the proposed foundation level of 2.1m. In order to take care of both the bearing pressure (48 - 400 kN/m2, using a factor of safety of 2.5) Raft foundation with ground beams were proposed to be placed on boulders. The boulders are to serve as drainage medium for the underlying water. © 2013, EJGE.