Browsing by Author "Iwuji, S. C."

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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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    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.