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Science Research Annals

Articles / Papers

  • Author: M. O. BELLO Volume: 10(1) 2019 Page: 1-9

    The effect of simvastatin on soil ammonia oxidisers

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  • ABSTRACT

    Article has no reference added yet.

    The quest to understand and distinguish the contributions of ammonia oxidising archaea (AOA) and ammonia oxidising bacteria (AOB) to nitrification in thesoil has increased the search for compounds that can selectively inhibit either of them. This study isaimed to investigate selective inhibition of AOA, in pure cultures and soil, by simvastatin and to determine the effect of selective inhibition of AOA and AOB on NH3 oxidation activity and growth of AOA and AOB in the soil. In pure cultures, simvastatin selectively inhibited all tested AOA isolates at concentrations between 8 and 100 μM. In soil microcosms incubated with 1 mM of simvastatin at low and high NH3 concentrations for 28 days, simvastatin selectively inhibited AOA but not AOB in pH 6.5 soil.More so, simvastatin is a selective AOA inhibitor in culture and soil. AOA and AOB growth in soil were detected at low and high NH4+ concentration. Therefore, AOA and AOB are more active when competition for NH4+ in the soil is relieved using selective inhibitors

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    Simvastatin Ammonia Oxidising Archaea Ammonia Oxidising Bacteria Inhibition Competition
  • Author: F. A. OLAJUBU Volume: 10(1) 2019 Page: 10-18

    Evaluation of the level of knowledge, attitude and misconceptions about ebola virus diseases (evd) among some university undergraduates in ondo state, nigeria

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  • ABSTRACT

    Basch, C.H., Basch, C.E. and Redlener, I. (2014). Coverage of the Ebola Virus Disease Epidemic in Three Widely Circulated United States Newspapers: Implications for Preparedness and Prevention. Health Promotion Perspectives 4(2): 247-251

    Ilesanmi, O. andAlele, F.O.(2016). Knowledge, Attitude and perception of Ebola Virus Disease among Secondary School Students in Ondo State, Nigeria. PLOS Current outbreaks 3(4): 1-10

    Joseph, A. O., Mohammed, A.Y., Raji, A., Atolagbe, E., Joseph, A. and Kadiri, K. (2017). A multi-site assessment of knowledge of Ebola virus disease among health workers in Southwest Nigeria. Research Journal of Health Sciences 5(3):159-166

    Curtailing a highly virulent infectious disease like Ebola requires good knowledge about the symptoms, transmission and control measures. This study was therefore design to assess the level of knowledge about these parameters among undergraduates of a tertiary institution in Ondo State, Nigeria. A well-structured questionnaire was given to each of the 492 consenting students from all the six Faculties of Adekunle Ajasin University, Akungba-Akoko, Nigeria. Data generated were analysed using SPSS package version 21. All respondents (100%) agreed to have heard about Ebola Virus Disease(EVD). Male to female ratio of the respondents was not significant, however, 481 (97.8%) were between age 15 and 30 years. Respondents agreed that EVD can be transmitted through kissing an infected person (87.6%) washing corpse of EVD patient (84.3%) and breast feeding by a symptomatic mother (85.6%). One hundred and forty two (142) respondents believed that EVD can be healed traditionally. Respondents (90.9%) agreed to hand washing as a major control measure. Only 61(12.4%) of respondents know at least one EVD emergency contact number. This study showed that the respondents has good knowledge about EVD. However, the author suggests that hand washing which the respondents agreed to be a good control measure should be resuscitated in all our public places. There should be enlightenment about EVD emergency contact numbers possibly, making it conspicuously displayed in all our public places in Nigeria by the authorities in-charge

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    Knowledge Ebola Awareness Undergraduates AAUA Nigeria
  • Author: K..T. ADEGBEHINGBE, B.S. ADELEKE, M.O. BELLO, V. T. FOLORUNSO, D.O. ADEJORO and T.A. JEMILAIYE Volume: 10(1) 2019 Page: 19-25

    Microbiological assessment and nutritional quality of ogi made from maize, sorghum and their mixture

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  • ABSTRACT

    Article has no reference added yet.

    This study was designed to evaluate the microbiological assessment and nutritional quality of ogi made from maize, sorghum and their mixture. Gruels produced from these grains and their mixturewere fermented for 72 hours. The pH, totaltitratable acidity, temperature of the fermenting samples, proximate analysis and the organoleptic properties were also monitoredon daily basis. Microbial counts increased in all the samples in which the mixed sample and sorghum samplehad the highestand the lowest microbial counts throughout the fermentation periodrespectively. The microorganisms isolated wereLactobacillus acidophilus, Streptococcus mutans, Enterococcus faecium,Escherichia coli, Enterobacteragglomerans, Corynebacteriumamycolatum, Staphylococcus aureus, Bacillus subtilis, Aerobacteraerogenes,Citrobacterfreundii, Klebsiellaoxytoca, Brevibacterium linens, Penicilliumcitrinum, Aspergillusniger, Fusariumgraminearum, Candida krusei, Saccharomyces cerevisiae, Rhodotorulamucilaginosa and Sceudosporiumapiospermum. The pH of the fermenting samples decreased with TTA increase in which sorghum and mixed samples had the highest and the lowest pHof4.3 and 3.1 when fermented while the least and the highestTTA were obtained from the same samples respectively. Moisture and protein contents increased after fermenting the samples with the highest from the mixture and maize samples.The fat, ash, crude fibre and carbohydrate contentsdecreased in all the ogi samples.The odourand the taste wererated strongly acceptableand sour respectively in all the samples while the colourwas variably rated. The improvements observed in the nutritional contents of ogifrom unmixed maize and sorghumgrains suggest theirpotential in the formulation of complementary weaning foods for infants.

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    Keywords

    Fermentation Ogi Cereals Microorganisms Weaning Food
  • Author: P. O. OLATUNJI Volume: 10(1) 2019 Page: 26-32

    Nested second derivative general linear methods

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  • ABSTRACT

    Article has no reference added yet.

    A family of nested second derivative general linear methods (NSDGLMs) which combines the advantages of linear multistep methods and Runge – Kutta methods is presented. The method possess high order with A-stability property, making it suitable for solving stiff initial value problems of ordinary differential equation. In implementation, the NSDGLM avoids the disadvantages of poor stability of linear multistep methods and high cost of implementation of Runge -Kutta methods. Numerical experiment was carried out on the Van der Pol equation, and it is observed that the numerical results of the NSDGLM compares with the reference solution from the MATLAB ode15s.

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    Keywords

    General Linear Methods Order Stability Stiff Problem
  • Author: A. ADEDOWOLE Volume: 10(1) 2019 Page: 41-49

    On the vibration of prismatic beam with non uniform prestress under exponential loads travelling at varying velocities

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  • ABSTRACT

    Article has no reference added yet.

    In this paper, the analysis of prismatic beam with non uniform prestress subjected to both constant and exponential loads is investigated. The governing fourth order partial differential equation were analysed to determine the behavior of the system under consideration. The non-homogeneous governing equation is solved by means of Fourier Sine transform and Laplace transformation and convolution theory. The effects of some parameters such as non uniform prestress, elastic foundation and the length coordinates x of the beam are investigated through the numerical illustration of the obtained approximate analytical result are presented in plotted curves. The results show that the response amplitudes of the simply supported prismatic beam decrease as the foundation modulli K increases. Also, the displacements of simply supported prismatic beam resting on elastic foundation, for fixed value of K, decrease as the prestress N increases. Also the transverse deflections of the beam decrease as the length coordinates x decreases under the actions of moving concentrated loads.

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    Keywords

    Exponential Load Foundation Stiffness Fourier Sine Transform Non Prismatic Beam Prestress Varying Velocities Vibrating System
  • Author: O. R. ADEOYO, B. I. PLETSCHKE and J. F. DAMES Volume: 10(1) 2019 Page: 50-57

    Amylase production and optimisation of culture conditions for some ericoid mycorrhizal fungi

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  • ABSTRACT

    Article has no reference added yet.

    Enzymes occur in all living things, hence in ericoid mycorrhizal fungi (ERM). Every species of microorganisms produce enzymes capable of hydrolyzing various substrates. Amylases are known to play a significant role in the food, brewing, detergent and pharmaceutical industries. Leohumicola incrustata, and two unidentified fungi belonging to Hyaloscyphaceae (EdRU083) and Leotiomycetes (EdRU002) were tested for their ability to produce amylases under different culture conditions that included various temperature, pH, metal ions, carbon sources and nitrogen sources in a modified Melin-Norkrans (MMN) liquid medium. Leohumicola incrustata produced 1.16 U/mg protein while EdRU083 and EdRU002 had activity of 0.81 and 0.91 U/mg protein at the same pH with corresponding biomass yields of 112.67, 125.00 and 95.33 mg/50 mL respectively. Improved enzyme activities and biomass yields were noticed when supplemented with potassium, sodium, glucose, maltose, cellobiose, tryptone and peptone while NaFe-EDTA and cobalt inhibited enzyme activity. Therefore, this study opens a new opportunity for exploring ERM fungi as potential sources of microbial enzymes for commercial purposes.

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    Keywords

    Amylase Ericoid Mycorrhizal Fungi Leohumicola Incrustata Culture Conditions
  • Author: A. ADEDOWOLE Volume: 10(1) 2019 Page: 58-66

    Dynamical analysis of non prismatic rayleigh beam resting on non- winkler foundation and subjected to traveling distributed forces

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  • ABSTRACT

    Article has no reference added yet.

    The dynamic response of a simply supported non prismatic Rayleigh beam under distributed moving forces resting on Winkler elastic foundation with exponential stiffness is investigated. For the solution of the fourth order partial differential equation with singular and variable coefficients, use is made of the technique based on the Galerkin’s method, integral transformation and convolution theory. The numerical results are presented in plotted curves. The results show that the response amplitudes of the simply supported nonprismatic Rayleigh beam decrease as the foundation modulli Fs increase. Also, the displacements of simply supported non-prismatic Rayleigh beam resting on Winkler elastic foundation, for fixed value of Fs, decrease as the prestress N increases. Also the transverse deflections of the beam decrease as the length coordinate x decreases under the actions of moving distributed loads. The results show that the critical speed for the moving constant load case is reached earlier than that for the harmonic variable moving load.

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    Keywords

    Exponentially Decaying Foundation Non Prismatic Beam Distributed Load Vibrating System
  • Author: P. O. AYE, N. I. AKINWANDE, F. A. KUTA and D. J. KAYODE Volume: 10(1) 2019 Page: 67-76

    Analytical solution of a mathematical model for the dynamics of diabetes mellitus and its complications incorporating treatment and positive lifestyle as control

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  • ABSTRACT

    Article has no reference added yet.

    In this paper, a mathematical model for the dynamics of diabetes mellitus and its complications incorporating treatment and positive lifestyle as control is developed. The population under study is divided into healthy, susceptible, diabetic without complication, diabetic with complication, diabetic with complications undergoing treatment. The analytical solution of the model is obtained using homotopy pertubation method (HPM). We carry out numerical simulation of the solution and the graphical results are presented. The result of the study established that the disease can be controlled by effective treatment and positive lifestyle.

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    Keywords

    Diabetes Mellitus Complications Treatment Positive Lifestyle
  • Author: A. A. ABDULLAH, A. A. KASIM, O. ADELOWO, M. ABBAS, and Y. MOHAMMED Volume: 10(1) 2019 Page: 77-84

    Reactions of some cowpea (vigna unguiculata l. walp) cultivars genotypes to blackeye cowpea mosaic virus disease

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  • ABSTRACT

    Article has no reference added yet.

    Cowpea is a dependable source of protein for human growth and development. The crop is widely cultivated in Sub-Saharan Africa including Nigeria. In spite of its numerous uses, infection by Blackeye cowpea mosaic virus (BICMV) constitutes a serious problem to cowpea productivity and once plants are infected, there is no remedy as in the case of other pathogens such as bacteria, fungi and nematodes. Cultivation of resistant genotypes is cost effective, ecologically sound and sustainable strategy against the pathogen. Twenty-five cowpea genotypes with differential yield and resistance background were evaluated against BICMV infection on the field. Cowpea seedlings were inoculated at ten days after sowing. The plants were observed for BICMV disease incidence, disease severity, growth and yield parameters. The data collected were subjected to analysis of variance. Cowpea genotype IT97K – 568 – 18 was observed to have the lowest disease incidence of 22.2%. However, the genotypes IT07K – 292 – 1 – 10 and IT07K – 299 – 6exhibited the lowest disease severity score of 2.3. Seed weight of 1.5 g per plant was highest in IT97K – 568 – 18. Therefore, the genotype IT97K – 568 – 18 is recommended for cultivation in areas that are prone to BICMV disease. This genotype probably contains tolerant genes to BICVM that could be explored for breeding purposes.

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    Keywords

    Cowpea Genotype Incidence Infections And Severity
  • Author: M. A. SALIU and O. A. ADEMESO Volume: 9(1) 2018 Page: 1-7

    Interface between mineralogy and mechanical properties of granitic rocks in some parts of s/w nigeria for dimension stone production

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  • ABSTRACT

    ASTM. (2001a). Standard test method for flexural strength test of Dimension stone.

    ASTM. (2001b). Standard test method for abrasion resistance of stone of stone subjected to foot traffic. ASTM Standard C 241-90.

    ASTM. (2001c). Standard test method for absorption and bulk specific gravity of dimension stone. ASTM Standard C 241-02.

    Granites are quarried for construction as well as structural support purposes. The materials to serve these purposes must meet the required mechanical properties. Interface between the mineralogy and the mechanical properties of selected granite rock types were analyzed to identify the granite regions that are suitable for dimension stone quarrying. From this work, it can be established that granodiorite, monzogranite and syeno – granite are all suitable for all dimension sone application based on their mechanical properties. K-feldspar granite and tonalite may have limited application due to high percentages of feldspar. Quartzolite and quartz-rich granitoids may not be suitable due to their brittle nature. All granite outside these region are predominantly feldspar (k and plagioclase) which will result in a significant reduction in mechanical properties and this in turn make them unsuitable for dimension stone production

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    Keywords

    Mechanical Properties Feldspar Quartz Texture Granodiorite
  • Author: M. B. AMINU Volume: 9(1) 2018 Page: 8-19

    Subkinematic and growth strata sequences in the deepwater niger delta – insight from opl 250

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  • ABSTRACT

    Avbovbo, A. A., 1978: Tertiary lithostratigraphy of Niger Delta. American Association of Petroleum Geologist Bulletin, vol. 62, no. 2, pp. 295-306.

    Bubb, J. N. and Hatlelid, W. G. 1977: Seismic stratigraphy and global changes of sealevel, part10: seismic recognition of carbonate buildups. In: Seismic Stratigraphy-Applications to Hydrocarbon Exploration (Ed. By C. E. Payton), American Association Petroleum Geologists Memoir., 26, 185-204.

    Catuneanu, O. 2006: Principles of Sequence Stratigraphy. Elsevier Netherlands. P. 375.

    Six sub-kinematic and three growth strata sequences have been described from the deepwater Niger Delta region using seismic and well log data sets from oil and gas industry. The goal was to create a preliminary overview and a base framework for tracking stratigraphic sequences within the study area. The sub-kinematic sequences (Ks1 – Ks6) are third order sequences with time span ranging from 1 to 2 million year (Ma). Possibly three fourth order sequences occur in Ks5. From log signatures, the sequences generally consist of thick hemi-pelagic shales interspaced with thin sand prone intervals. The sand prone intervals represent gravity slump deposits such as basin flow fans and sand flushed from channels mouths at the onset of the lowstand system tract (LST). Growth strata sequences consist of thick hemi-pelagic sections with deeply incised channels and associated levee systems and possibly extensive reworked sand prone facies. Vertical communication is enhances due to stacking of sand prone facies. Thrust initiation at 12.8 MA defines the boundary between charged sands in deeper sections and water filled sands in shallow section.

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    Keywords

    Stratigraphic Sequences Basin Flow Fans Gravity Slump Deposits Recharge Timing; Reservoirs
  • Author: Olaremu Abimbola George, Jayeola Afolabi Olubunmi and Akintomide Tobiloba Michael Volume: 9(1) 2018 Page: 20-32

    Assessment of bituminous sand from agbabu, southwestern nigeria using geochemical and sedimentological approach

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  • ABSTRACT

    Adegoke, O.S and Enu, E.E. (1983) ‘Application of Resistivity Sounding In the Exploitation and Exploitation for Nigeria Tar sand’ Energy Exploration, vol.2 (2); Pp155-164.

    Adegoke, O.S., Enu, E.I., Ajayi, T.R., Ako, B.D., Omatsola, M.E. and Afonja,A.A, (1981). “Tar sands, a new energy raw material in Nigeria” Proceeding of Symposium on new energy raw material .Karlovy .pp.17-22.

    Adegoke, O.S. and Ibe, E.C. (1982) ‘The Tar Sands and Heavy Crude Resources of Nigeria’, paper presented at the second International Conference on Heavy Crudes and Tar Sand.Caracas, Venezuela. 32:280-285.

    Bituminous sands consists of sand and other associated clastic rocks which are impregnated with heavy hydrocarbon (bitumen), chemically similar to conventional oils but which have high densities or low API gravities (<120 API) and high viscosities. A total of ten (10) samples were collected from the study areas and used for geochemical and sedimentological analysis. The order of the mean concentrations of tested heavy metals in the sampled bitumen within the area are; Mn>Ba>Pb>Cr>Cd>Cu>Co>Ni>. Based on the Geo Accumulation Index (Igeo), the study areas are generally classified as unpolluted with regards to the measured heavy metals. From the interpretation of the analysis, the values of the mean, standard deviation, skewness and kurtosis were found to range between 1.1- 2, 0.89- 1.753, -0.454 - (-0.1866), 0.84- 1.548. The mean and standard deviation signifies that the sediment was generally medium grain size and moderately sorted which implies that the sands have undergone a fairly long transportation history. The values of skewness and kurtosis signify that the sample are generally coarse skewed and leptokurtic. Results of bitumen saturation analysis revealed that the average percentage weight of the bitumen in the surface samples ranged between 23.68% and 96.54% with an average bitumen saturation of over 40%. The presence of heavy mineral suites of Zircon, Tourmaline and Rutile in all the samples indicates that the sediments were derived from igneous and metamorphic rock of nearby basement rocks but their accumulation was strongly controlled by mechanical process of sedimentation.

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    Keywords

    Bitumen Geo Accumulation Sedimentation Agbabu Hydrocarbon
  • Author: B. A. OMONIYI Volume: 9(1) 2018 Page: 33-45

    Variation in reservoir connectivity in vertically stacked deepwater turbidite channels: impacts on oil recovery

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  • ABSTRACT

    Adenipekun, A., G. Marinho, O. Odeyemi, C. Ugboaja, A. Bassey, and E. Nnnebocha, 2017. Riserless light well intervention restores production on Oyo-8 subsea well. Offshore Technology Conference, Houston, May 1-4, 10 p.

    Arps, J. J., 1945. Analysis of decline curves. Transactions of the AIME 160: 228-247.

    Brehm, J. A., 2003. The North Brae and Beinn Fields, Block 16/7a, UK North Sea. In: J. G. Gluyas and H. M. Hichens, eds., United Kingdom Oil and Gas Fields, Commemorative Millennium Volume Geological Society, London, 199-209

    The study demonstrates the influence of variable reservoir connectivity on oil recovery from turbidite reservoir marked by stacked channel architecture. The considerable variability in facies types and distribution affects the geometry and dimensions of sand bodies that make up individual channel forms. The results from the application of attribute indices approach to estimate connectivity of the reservoir facies are pretty consistent with the conceptualised facies distribution across the reservoir system. The vertical stacking pattern of channel-fill facies enables a levee complex to develop. This complex bound up with slope sediments improving lateral connectivity between channel-fill and overbank facies for effective communication between injection well (16/07a-B14) that penetrates the slope facies and production well (16/07a-B1) that penetrates the channel-fill facies. The occurrence of mudstone at the base of individual channel forms reduces vertical connectivity at channel margins. The mudstone distribution constitutes a major risk to vertical oil sweep, particularly in channel-axis, channeloff-axis and channel-margin sequences. In order to optimise oil recovery from deepwater turbidite reservoirs with similar reservoir architecture, it is therefore crucial to consider a depletion strategy that will reduce the risk of differential waterflood performance and improve oil sweep, particularly in the vicinity of production wells.

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    Keywords

    Turbidite Reservoirs Facies Attribute Indices Channel Forms Reservoir Connectivity
  • Author: A.O AJAYI and O.A. OWOYEMI Volume: 9(1) 2018 Page: 46-54

    Antibiotic susceptibility patterns of microbial isolates from food and utilities in selected restaurants in akoko communities of ondo state, nigeria

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  • ABSTRACT

    American Chemical Society, (2017). Fish food for marine farms harbor antibiotic resistance genes. Science news – from research organizations. www.sciencedaily.com. Accessed, 1st September, 2017.

    Bankole, S.A and Joda, A.O. (2004). Effects of lemon grass powder and essential oil on mould deterioration and aflatoxin contamination of melon seeds. African Journal of Biotechnology. 3:52-59.

    Baron, E.J. and Finegold, S.M. (1990). Bailey and Scott’s Diagnostic Microbiology. 8th ed. The C.V. Mosby Company, St. Louis.

    The study shows the antibiotic resistance of microbial isolates encountered in foods, table surfaces, cleaning cloths and washing water at selected restaurants in some Akoko Communities, Nigeria. Food samples such as rice, beans, fufu, moin-moin, eba, amala and pounded yam were purchased from different restaurants at Oka, Ikare and Akungba-Akoko, Nigeria for microbiological analysis within 24 hours of collection. The antibiotic susceptibility profile of the isolates was determined in vitro using standard techniques. A total number of eighteen (18) bacteria and seventeen (17) fungal species were isolated from the samples. The bacterial species were identified as Aeromonas aerogenes, Aeroginosa spp, Bacillus cereus, Bacillus marscecens, Bacillus megaterium, Bacillus subtilis, Clostridium freundii, Clostridium sporogenes, Enterobacter cloacae, Micrococcus luteus, Klebsiella pneumoniae, Pseudomonas putida, Proteus vulgaris, Pseudomonas fluorescens, Staphylococcus aureus, Staphylococcus epidermis and Staphylococcus faecalis. The fungi isolates are Aspergillusa lutaceus Aspergillus Rhizomucur pusillus, Fusarium poae, Cunninghamella elegans, erythrocephalus, Gelasinospora retispora, Heteroconium chaetospira, Hormiactis candida, Penicillum fellutanum, Rhizopus oryzae, Torulaherbarum, Scopulariopsis brevicaulis, Syncephalastrum racemosun, Saccharomyces, Gliocladium viride, and Scopulariopsis brumptii. Most isolates obtained during the study showed multiple antibiotic resistance to Erythromycin (E) and Chloramphenicol (CH), Septrin (SXT), Zinnacef (Z), Gentamycin (CN) and Streptomycin (S). This study suggests the need to observe high level hygiene in eateries. Similarly, the nature of antibiotic resistance in this area can form a sort of database for health care management systems in case of infection from these sources.

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    Keywords

    Antibiotics Bacteria Fungi Inhibition Resistance
  • Author: A. D. TAMBUWAL and C. OGBIKO Volume: 9(1) 2018 Page: 56-60

    Proximate and chemical analyses of selected agricultural wastes used for biogas production

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  • ABSTRACT

    Abubakar, A.A. (2017). Biogas Potential of Some Selected Kitchen Wastes Within Kaduna Metropolis. American Journal of Engineering Research, 6(5): 53-63.

    Adeyosoye, O.L., Adesokan, L.A., Afolabi, K.D. and Ekeocha A.H. (2010) Estimation of proximate composition and biogas production from in vitro gas fermentation of sweet potatoe and wild cocoyam peels. African Journal of Environmental Science and Technology, 4 (6): 388-391

    AOAC. (1990). “Official Methods of Analysis” 15th ed Washington, DC: Association of Official Analytical Chemist.

    Due to the rising cost of fossil oil accompanied with pollution problems associated with petroleum and allied products have led to the search for alternative sources of energy. This research was conducted to determine the proximate and chemical analyses of fresh and spent slurries with a view of determining their suitability for energy production. The samples were analyzed according to standard analytical techniques. The proximate and chemical analyses of the substrates hold promise as a potential biogas source as evidenced by the 4773, 6535, 6684, 3834, 4096 and 6199 kcal/kg for the pumpkin, plantain, banana, spinach, watermelon and synergized mixture respectively. The spent slurry offers promise as an excellent source of plant nutrients since it could serve as a source for bio-fertilizer production.

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    Keywords

    Agricultural Wastes Biogas Proximate Sluury Substrate
  • Author: F. O. ARANUWA Volume: 9(1) 2018 Page: 61-66

    Fingerprint authentication system based on coalesce portrayal approach

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  • ABSTRACT

    Akhtar, Z and Affrarid, N (2011): “Secure learning Algorithm for Multimodal Biometric Systems against Spoof Attacks”. International Conference on Information and network technology IPCSIT vol.4 (2011) © (2011) IACSIT Press. Singapore.

    Aranuwa F. O. (2014): Multiple biometric systems: design approach and application Scenario. Multilevel decision threshold authentication mechanism for efficient Multimodal Biometric Systems”. Elixir International Journal for Computer Science and Engineering. Roma, Italy. Volume 73, pg 26015-26019, July 2014. ISSN 2229-712X.

    Aranuwa F.O (2016): “Multilevel decision threshold authentication mechanism for efficient Multimodal Biometric Systems”. Elixir International Journal for Computer Science and Engineering. Roma, Italy. Volume 92, pg 38702-38705, February 2016. ISSN 2229-712X. Available online at: http://www.elixirpublishers.com/articles/1456982350_92%20(2016)%2038702-38705

    Fingerprint identification system is one of the most popularly used biometrics solutions for human identification and authentication as a result of its uniqueness and universality. It has been used in law enforcement and forensics, to identify suspects and victims for over a century. However, in spite of its applications in diverse identification systems, a number of challenges still recedes its effectiveness and efficiency, especially in applications with single mode representation. Study have shown that biometric system that uses a single representation for identification has this predisposition to contend with problems related to distortion, noisy data and error in matching, which often leads to reduction in the accuracy of the system. Therefore, this study considered fingerprint authentication system using coalesce portrayal approach in a single application to improve the efficiency of the system. A biometric system platform was developed and successfully used to capture fingerprint images from 50 persons and extracted salient features of both minutiae and texture of the fingerprint using standard enrolment devices with 500 pixels per inch (ppi). Each minutia was determined by calculating the Euclidean distance between the ridge ending and bifurcation, while the texture based extraction was done using spatial grey level dependence matrix (SGLDM). Genuine and impostors’ identity were tested during the enrolment and verification processes. The performance of the system was measured in terms of false acceptance rate (FAR), false rejection rate (FRR), failure to enroll rate (FER). It took the system 58seconds to process a request with performance accuracy of 98% in 3 trials. The results from the implementation when compared with that of unimodal system, showed a better performance in terms of efficiency, accuracy and reliability.

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    Fingerprint Biometric Coalesce Portrayal Minutiae Texture Based Single Mode
  • Author: O. E. IGE and O. R. AYENI Volume: 9(2) 2019 Page: 1-9

    The study of airborne pollen and spores in akoko south west environment of ondo state, nigeria

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  • ABSTRACT

    Article has no reference added yet.

    Airborne palynomorphs of Akoko South West Local Government environment, Ondo State, Nigeria were analysed palynologically to determine the taxa of biological and/or airborne palynomorphs present in the atmosphere. Out of the twenty-five pollen types belonging to seventeen plant families, consisting of thirteen dicotyledons and four monocotyledons encountered, three were identified to family level and twenty two to generic level. A total of 1,570 pollen grains, 273 fungal spores and 28 pteridophyte spores were documented. Other palynomophs documented include 33 burnt plant parts and 41 charred Poaceae cuticles. There were observable monthly fluctuations in the quantity of pollen grains and other palynomorphs encountered. The identified pollen types reflect the vegetation around the geographical area investigated. The result also showed the presence of anthropogenic activities on the local vegetation of the study environment.

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    Aeropalynology Pollen Spores Airborne Akoko South West
  • Author: O.Y. ADENIRAN Volume: 9(2) 2019 Page: 10-17

    Histopathogical consequences of dietary intake of thermally oxidized soybean oil

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  • ABSTRACT

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    Thermal oxidation of unsaturated fatty acids is known to results in significant generation of dietary advanced lipid oxidation end products which are in part cytotoxic and genotoxic compounds. These present study was aimed at investigating the effects of these oxidized products on the histoarchitecture of liver and kidney of wistar albino rats. Soybean oil used to fry bean cake (akara) and sweet potato chips twice daily (150ºC for 30 min) for five consecutive days were assessed for their physico-chemical stability using acid values, peroxide value and saponification value as indicator of level of deterioration. Alteration in the histology of the liver and kidney of rats placed on the oxidized oil diets were determined. Increase in the acid and peroxide values of the oxidized oils compared to the fresh oil confirmed chemical deterioration of the heated cooking oils while gross alterations in the normal architecture of the liver and the kidney revealed the possible health hazards to these vital organs. There is need for culinary activity to be carried out at low temperatures and for short periods to prevent generation of toxic oxidation products which may have adverse health effect.

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    Soybean Oil Thermal Oxidation Peroxide Value Acid Value Histopathology
  • Author: A. O. ASHOGBON and A. G. OLAREMU Volume: 9(2) 2019 Page: 18-28

    Composition and some physicochemical properties of microwaved starch blends from cocoyam (xanthosoma sagittifolium) and bambara groundnut (voandzeia substerranean)

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    The extracted cocoyam starch (100CYS) and bambara groundnut starch (100BBS) were blended in three ratios (70CYS/30BBS, 50CYS/50BBS, 30CYS/70BBS) (%, w/w) and all the starch samples were microwave(MW) irradiated. The compositional and some physicochemical properties of the starch samples were evaluated to study the changes made as a result of MW irradiation. There was reduction in moisture and ash content, but an increased in the lipid and protein content of MW-irradiated native starches (NSs) and starch blends (SBs). A new trend was developed in apparent amylose (AAM) content. With just one exception (M70CYS/30BBS blend), the AAM content of the NSs increased and that of the SBs decreased as a result of MW irradiation. For the MW-treated SBs, the values for dispersibility, bulk density and pH ranged from 85-98%, 0.79-0.90gmL-1 and 6.9-7.3, respectively. With the exception of the 50CYS/50BBS blend, there was increased in the swelling power of the remaining starch samples due to MW irradiation. Alterations were also observed in water solubility index of the starch samples micro waved as a result of their different chemical constitution. The non-irradiated starches manifested different trend in pasting properties as a result of MW irradiation when compared to the SBs as observed in peak, breakdown and final viscosities.

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    Microwave Radiation Cocoyam Starch Bambara Groundnut Starch; Starch Blend Dispersibility Modification
  • Author: O. A. OBEMBE Volume: 9(2) 2019 Page: 29-33

    Influence of pre-sowing treatments on dichrostachys cinerea and its agrihorticultural potentials

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    Dichrostachys cinerea (Linn) Wight and Synonym Dichrostachys. Glomerata (Forsk.) Chiov; commonly known as Sickle bush or Chinese Lantern tree belongs to the natural Order Fabales, Family Fabaceae and Sub-Family Mimosoideae. It’s spike inflorescence are of two showy colours –pink and yellow flowers are faintly fragrant, very decorative and the finely divided feathery leaflets gives the tree an attractive appearance, thus it can be exploited as an ornamental plant. Dichrostachys cinerea exhibits seed coat dormancy. Seeds were sown in white plastic buckets filled with loose and well drained river sand at sowing depth of 3cm.Bucket diameter was 22cm and bucket depth from the base to the bream was 24cm. Buckets were laid out in complete randomized design. Four(4) replications of 100 randomly picked seeds-25 seeds per bucket were used for each treatment. Viable seeds determined by floatation method were subjected to pre-treatments using control, 98% Sulphuric acid, wet heat(boiled or hot water)and physical abrasion for 1,2 and 3 minutes. Results shows that 3 minutes physical scarification (56%)was most efficient with mean emergent time of 7.3 days. Control treatment gave 34% and mean emergent time of 8.4 days. Thus 3 minutes physical scarification pre-treatment with 56% emergence is recommended for the propagation of Dichrostachys cinerea.

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    Dichrostachys Cinerea Seed Pre-Treatments Seed Emergence Percentage Mean Emergence Time