Browsing by Author "Azeez, T. O."

Now showing 1 - 13 of 13
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    Correlates of cardiorespiratory fitness and gait parameters in young undergraduate subjects
    (U. P., 2010) Azeez, T. O.; Lamina, S.; Iwuji, S. C.
    Physiological studies of healthy individuals suggested that the pattern of walking influenced the oxygen cost of walking in a given distance. It has also been observed that in pathological states, shorter and frequent steps are common and that this inefficient gait might contribute to exercise limitation. The purpose of the present study was therefore to investigate the corelates of cardiovascular fitness and gait parameters in young undergraduate students. A cross sectional independent group design was used in data collection. Forty subjects with age ranged between 20 and 30 years participated in the study. Subjects’ cardiorespiratory fitness was assessed using the 1.4 miles run; subjects were group into cardiorespiratory fitness category of high and low. Gait parameters (cadence [CD], step time [ST] & gait speed [GS]) were assessed using the paper-and-pencil method. Student t test and Pearson correlation test were used in data analysis. Findings indicates significant increase in the high fit group over low fit group in CD, ST and GS at p<.05. There was a significant positive and negative correlation between VO2max and gait variables respectively: GS (.465), CD (.555) and ST (-.580) at p<.01. The present study concluded that cardiovascular fitness could be a positive factor/marker of qualitative pattern of walking in normal young adult. Future studies investigating the effect of physical training on pattern of walking in the healthy, chronic diseases and the disables are recommended.
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    Design and fabrication of a portable obstruction detection device for visually impaired persons
    (ABC Publications Incorporated, 2020) Nnadiekwe, C. A.; Iwuji, S. C.; Azeez, T. O.; Nosiri, O.; Banigo, A.
    The cow-horned cased Obstruction Detection Device (ODD), powered by 9V battery, is designed for visually impaired persons. It is constructed using two HC-SR04 ultrasound sensors for front obstacle and depression detections. The device detects an obstacle by emitting ultrasonic sound that hits the interface and interprets the echo. The emission of this sound is triggered by the PIC16F877A microcontroller programmed to send out feedback to the user’s earphone in form of a musical note peculiar to the range of distance of the obstacle. The device is integrated with Radio Frequency (RF) Module that locates the device when misplaced. This Module has LM555 timer that regulates the signal emitted by the misplaced device. The device is incorporated with a Light Dependent Resistor (LDR) that detects any change in illumination. This project designed and fabricated a cheap locally cased ODD with comparative advantages of informing the visually impaired of the range of distance and position of the obstacle and the location of a misplaced device.
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    Effect of mahogany filler on mechanical properties of reinforced polyethylene matrix
    (SAVAP International, 2013-07) Olaitan, S. A.; Azeez, T. O.; Atuanya, C. U.; Onukwuli, O. D.; Officha, M. C.; Menkiti, M. C.
    The effect of mahogany filler as an agricultural waste material used in thermoplastic polymer composite was investigated. Polyethylene (PE), as the matrix, and mahogany sawdust, as the filler, were prepared in five levels of filler loading (10, 20, 25, 30, and 35 wt %) to form thermoplastic composites.Two forms of composite samples were prepared with a recycled polyethylene and mahogany wood filler called recycled polyethylene (RPE) composite and 20 percent of virgin polyethylene with recycled polyethylene wood filler called virgin polyethylene recycled polyethylene (VRPE)composite and their mechanical properties were studied. Test results show that the tensile strengths, tensile modulus, flexural strengths, flexural modulus and hardness properties increased while impact strength, decreased with increase in filler loading for the mixed polyethylene composites but tensile strength of there cycled polyethylene composite decreased with increased filler loading. The appreciable improvement on the tensile strength indicates that mahogany can be used as a reinforced material of the mixed polyethylene composite. Again the presence of 20 percent of virgin PE has significant effects (p < 0.05) on mechanical properties of the mahogany filler – recycled polyethylene composite.
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    Effect of rice husk filler on mechanical properties of polyethylene matrix composite
    (2013-08) Atuanya, C. U.; Olaitan, S. A.; Azeez, T. O.; Akagu, C. C.; Onukwuli, D. O.; Menkiti, M. C.
    compositeIn the present work, the effect of rice husk filler loading (10%, 20%, 25%, 30%, and 35%) on the mechanical properties of recycled low density polyethylene (RPE) and mixed with 20 percent weight fraction of virgin polyethylene (MPE) composites was aimed to be investigated. The waste polyethylene was blended with virgin polyethylene and the composites of RPE and MPE were moulded with the addition of rice husk filler using injection moulding machine at a pressure 150MPa and temperature 160oC. The composites were cut into specified dimensions and mechanical properties were conducted on them. Tensile strength increased up to 10 percent weight fraction of rice husk filler in the composites and later decreased above 10 percent filler loading. Tensile modulus, flexural strength and modulus, and Brinell hardness increases with increased filler loading, but impact strength decreases with increased in filler loading. The rice husk filler loading had significant effect (p < 0.05) on the mechanical properties of MPE composite compared with RPE composite which indicated that rice husk filler may be used for reinforcement of Polyethylene
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    Effects of chemical surface modifications on combretumdolichopetalum fiber for sustainable applications
    (U. P., 2016-01) Walter, P. E.; Azeez, T. O.; Onukwuli, O. D.; Atuanya, C. U.
    The need to minimize the environmental effect posed by Combretum dolichopetalum(C. dolichopetalum) fiber and its effective use in polymer applications necessitated this study. Effect of chemical surface treatments onC. dolichopetalum fiberfor sustainable applications was aimed to be investigated. Retting method was employed for extraction of C. dolichopetalum fiber and the proximate contents were determined using gravimetric analysis. The fibers were mercerized and acetylated separately by 0 – 15 % within time intervals of 10 – 50 minutes and 30 – 150 minutes respectively at room temperature. The tensile strength in accordance with ASTM standards, aspect ratio, water absorption and microstructural analysis were studied with aids of scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). The result shows that the fibers contain 59.22 % cellulose, 20.30 % hemicelluloses, 2.40 % lignin, 9.32 % pectin, 4.08 % moisture and 2.26 % wax. The tensile strength of the mercerized and acetylated fibers increased by 877.58 % and 601.73 % of the unmodified fibers at 6 and 12 % concentration for 30 minutes due to increased aspect ratio with reduced density and water adsorption. SEM and FTIR studies revealed changes in surface topography and surface chemistry of the treated fibers.
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    Ergogenic controversies of socio-cultural African herbs: A review study on khat (CATHA EDULIS) and kolanut (Cola Spp)
    (U. P., 2010) Lamina, S.; Azeez, T. O.; Subramanian, M.; Ayana, A. M.
    Khat and kola nut, are highly controversial ergogenic herbs indigenous to Africa and in the countries around the Red Sea. The spectrum of khat actions has been postulated to lie between amphetamines and caffeine while kola nut active chemical is caffeine. Therefore, khat and kola nuts and their principal active constituents (cathinone, cathine and caffeine respectively) are categorized as stimulants. The chewing of khat leaves and kola nuts has a deep rooted religious and socio- cultural tradition in Africa. Ironically, the World Antidoping Agency and the International Olympic Committee have placed a limit to cathine usage in sports. Caffeine, though not presently in the list of banned substances, but was previously banned, unbanned and restricted before 2004. Reasons for the partial ban and unban of cathine and caffeine respectively seem unclear and ambiguous. It is also confusing and worrisome if, the ethical line of cheating in sport is being scrutinized more carefully, or weather a cultural incident of khat and kola nut chewing is being handled appropriately. Before a conclusive statement could be made on the ergogenic status of both herbs, there is a need for joint extensive studies and international conference of stakeholders.
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    Exercise and pregnancy: A review study
    (U. P., 2010) Lamina, S.; Musa, D. I.; Hanif, S.; Azeez, T. O.
    In recent times, researchers, exercise advocates and other professional experts in women’s health are agitating for women participation in exercise programme. Reasons for this advocacy might not be unconnected to the fact that the benefits of exercise for women far outweigh the complications particularly in pregnancy. This paper review significance of exercises during pregnancy. The review revealed that it is unrealistic for pregnant women to participate in vigorous physical activity, but could benefit from antenatal physiotherapy. It is also apparent that female athletes tend to have fever pregnancy and child birth related complications than do normal non athletic women. This is suggestive that women should be physically active but pregnant women continue to participate in activities which they are familiar with, while regular participation of women of reproductive age in exercise and sports is highly encouraged.
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    Impact of nanotechnology in Nigeria: A short survey
    (MedCrave, 2017-05-15) Ejeta, K. O.; Dolor, G. A.; Ndubuka, G. I.; Nkuma-Udah, K. I.; Azeez, T. O.; Odugwu, O.
    Nanotechnology, one of the foremost alternative modern technologies of the twenty-first century offers enormous benefits and opportunities through synthesis, characterization and fabrication of quite vast number of nanomaterial to solve societal immediate problems. Structured questionnaires were administered to three different industries in each of the six geo-political zones in Nigeria, a Country located in West Africa bordering the gulf of Guinea, Niger and Chad (North), Benin (West) and Cameroon (East) to determine the impact of nanotechnology. The data emanating from this study were analyzed using multiple regression analysis, correlation analysis, analysis of variance (ANOVA) [1] and likert 5 scales with T-test utilized in determining levels of significance. The findings are reported and discussed.
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    Nanobiosensors: Applications in biomedical technology
    (IOP Publishing, 2020) Banigo, A. T.; Azeez, T. O.; Ejeta, K. O.; Lateef, A.; Ajuogu, E.
    Biosensor devices are composed of bioreceptor, transducer and detector that detect and aid in measuring parameters of some primary metabolites, immunological molecules and many more materials. These devices are of various types including piezoelectric which exhibit high efficiency based on sensitivity, response time, selectivity and linearity. Currently, newly developed nanobiosensors help in transduction and are employed to sense biomolecules bearing high sensitivity. Nanobiosensors also could be homogeneous or heterogeneous in nature and equally function in sensing mechanism of the biosensing technology. Thus, different nanobiosensors are greatly utilized to reduce poison in products, disease diagnostics and in many biomedical applications. Based on all these factors and the positive impact of using these devices; nanobiosensor types, applications, challenges and preferred solution in biomedical technology were considered and discussed in this work.
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    Nutritional evaluation of medicinal cnidoscolus aconitifolius (Chaya) leaves used in Nigeria
    (ABC Publishers Inc., 2013) Iwuji, S.; Nwafor, A.; Azeez, T. O.; Nwosu, E. C.; Egwurugwu, J.; Danladi, N. B.
    Evaluation of the nutritional content of edible plants is currently essential for safety. This work assessed the proximate and mineral composition of the leaves of Chaya plant (Cnidoscolus aconitifolius) commonly known as ‘hospital is too far’ and consumed in Niger Delta, Nigeria for medicinal and nutritional purposes. The study showed that the dried leaves of the plant contain 47.03 ±1.02% of nitrogen free extract; 33.04± 3.14% of crude fibre; 7.03±0.23% of crude fat; 4.03±0.67% of crude protein, while moisture and ash made up 6.10±1.10% and 3.04±0.32%, respectively. A gram of the dried leaves yielded (in mg) 10±1.2, 20±1.6, 0.01±0.1, 100±5.3, 85±4.32, 18±2.1 and 50±2.3 of Iron, Phosphorus, Sodium, Potassium, Magnesium, Manganese and Calcium, respectively. The energy yield was 258±4.5kcal/100 mg. These results suggested the comparative richness of the leaves in fibre, high nitrogen free extract (carbohydrate) and essential minerals to prevent nutritional and electrolyte deficiency disorders among the consumers.
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    Optimization of bioremediation of cheese whey with the activity of klebsiella pneumonia using response surface methodology
    (U. P., 2013) Azeez, T. O.; Onukwuli, O. D.; Araromi, D. O.; Arinkoola, A. O.; Salam, K. K.; Iwuji, S. C.; Ejeta, K. O.; Dawodu, B. F.; Ayinde, K. A.; Nwacha, R.; Azeez, F. O.
    Response surface methodology was used to study the optimization of bioconversion of cheese whey to 2,3-Butanediol using Klebsiella pneumonia at room temperature. 3-Level factorial design was employed to correlate the bioremediation parameters with the biomass of K. pneumonia and concentration of 2,3-BD as response. Quadratic polynomial equation was developed to achieve optimal performance of the process. The result showed that the optimum condition for the bioremediation process in unaerated and airlifted batch reactors for concentration of cheese was 39.98g/L and 39.94g/L, and fermentation time was 95.5hours which resulted in biomass of k. pneumonia 1.4633mg/L and 3.6580mg/L, and 2,3-BD production of 10.696g/L and 17.997g/L respectively. 2,3-BD production in unaerated and airlifted batch reactors amounted to 36.88% and 62.06% respectively. The study has shown that k. pneumonia not only utilized cheese whey as a source of food and energy but optimally better for remediation of cheese whey in airlift batch reactors.
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    Phytochemical analysis of aqueous methanolic extract of acanthospermum hispidium and its effect on biochemical and hematological indices in plasmodium falciparum infected rats
    (2018-05) Azeez, T. O.; Banigo, A. T.
    Haematological (Red blood cell ‘RBC’, packed cell volume ‘PCV’, white blood cell ‘WBC’ and platelet ‘PLA’) and biochemical (total protein, serum albumin and creatinine) parameters of rats treated with aqueous-methanolic extract of A. hispidum leaves on blood serum of rats infected with P. falciparum was investigated. The chemical composition was determined using gas chromatography and mass spectrometry (GC-MS). Biochemical and haematological parameters were examined using standard methods. The aqueous-methanolic extract of A. hispidum consist of Allyldimethyl-Formamide, Erythritol, Glycerin, Benzoylmethyl-3-hydroxy-5-nitro-2-indolinone, Silanol and Hexadecanoic acid, 1-(hydroxymethyl)-1,2-ethanediyl ester with composition of 13.578, 2.796, 56.72, 5.486, 1.415 and 10.005%, respectively. The increase in RBC, PCV, PLA and albumin with reduction in WBC and creatinine level compared to normal control when treated with aqueous – methanolic extract of A. hispidum leaves were obtained with reduced parasitaemia. Aqueous – methanolic A. hispidum leaves, at 400mg/kg for 72 hours proved to be the best for treatment of malaria parasite based on haematological and biochemical parameters assessed.
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    Tensile response of treated cissus populnea fibers
    (U. P., 2018-01) Azeez, T. O.; Onukwuli, O. D.
    Improvement and effectiveness of polymers through reinforced materials coupled with environmental nuisance of the Cissus populnea fiber remains an area of concern. Tensile responses of chemically treated C. populnea fibers were investigated. Gravimetric analysis was used to determine the composition of C. populnea fibers. Sodium hydroxide (NaOH), acetic anhydride (AC) and ethylene diaminetetra-acetic acid (EDTA), respectively, were used for fiber treatment and optimized with variable parameters (concentration and time) using response surface methodology (RSM) with central composite design. Scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) were studied. At optimum treatment conditions, NaOH, AC and EDTA, respectively, increased the tensile strength of C. populnea fiber by 33.49, 274 and 194.52% as well as tensile modulus by 793.43, 20799.43 and 855%. Hence acetic anhydride treatment gave the best tensile properties of C. populnea fibers as corroborated by SEM with EDS. Thus, the effective use of C. populnea fiber in composite applications can be improved by chemical surface modifications.