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Articles by A.K. Ademola
Total Records ( 3 ) for A.K. Ademola
  O.S. Hammed and A.K. Ademola
  The analysis, design and construction of an emergency rechargeable lamp with a battery overcharging preventer circuit for illumination purpose has been undertaken in this research. The approach here is generally discrete components based, making use of an operational amplifier comparator circuit, which compares the voltage level across the battery thereby preventing overcharging. Also, a low power transistor was used to generate pulses, which was connected in push-pull mode for signal amplification. A transformer was used to step up the A.C. voltage generated to 220 V required to light the 18 watts A.C. bulb. Following the design, a prototype of the emergency rechargeable lamp with a battery overcharging preventer circuit was constructed.
  P.O. Olanrewaju , A.O. Adesanya , A.K. Ademola and O.S. Hammed
  In this study, we investigate a note on the thermal ignition in a strongly exothermic reaction of a variable viscosity combustible material flowing through a channel with isothermal walls under Arrhenius kinetics, neglecting the construction of the material under physical and reasonable conditions to give further insight into the theory of combustion. Numerical solutions are constructed for the governing non linear boundary-value problem using shooting technique together with Runge-Kutta method and important properties of the temperature field and thermal critically are discuss.
  R.I. Obed , A.K. Ademola , K.A Adewoyin and O.A. Okunade
  Entrance Skin Dose (ESD) and Effective dose (E) to adult patients undergoing Chest (AP and Lat), Skull (AP and Lat), Abdomen (AP) and Pelvis (AP) radiography were estimated in (9) selected hospitals in Southern Nigeria. A total of 766 patients were considered in this study. The ESD was obtained using standard factors and a mathematical algorithm. The estimated mean ESD obtained were as follows: 0.4 mGy for Chest (PA), 1.7 mGy for Chest (Lat), 6.7 mGy for Skull (AP), 4.2 mGy for Skull (Lat), 5.4 mGy for Abdomen (AP) and 6.9 mGy for Pelvis (AP).These values were compared with those reported in similar studies carried out in UK, USA and by the International Atomic Energy Agency (IAEA). The mean effective doses were found to be generally low when compared with those found in the literature (Finland, Germany, Japan, Netherlands and UK). The results presented in this present study call for Quality Assurance Programme (QAP) in X-ray diagnostic units in Nigeria hospitals to ensure that doses are kept as low as reasonably achievable and also for the formulation of Local Diagnostic Reference Levels (LDRL).
 
 
 
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