iosr-JEEE   Volume-10 ~ Issue-6 ~ Nov-Dec 2015

Abstract: Nigerian Power system is faced with problems of inadequate generation, huge losses in the system and inefficient use of electricity. Losses in power system are depicted by mismatch in generated power and quantity of power that can be accounted for. The losses due to inherent properties of the power system are Technical while those due to factors external to the power system are Non-Technical. Technical Power losses in Abeokuta distribution network were computed from data obtained on Totoro, Kolobo, Abiola-Way, Ijeun-Titun, Ake-Road,GRA, Obantoko and Odeda feeders for three years (2012 to 2014) from Ibadan Electricity Distribution Company (IBEDC), Ijeun District, Abeokuta Ogun State Nigeria using loss factor approach. The results revealed that Obantoko Feeder has highest technical losses in all the years considered while Odeda has minimum technical losses. The high technical losses on Obantoko feeder was attributed to span of the feeder (29.5km) and illegal connections resulting in overloading of the feeder.

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[5] O. Refou, Q. Alsafasfeh and M. Alsoud, Evaluation of Electric Energy Losses in Southern Governorates of Jordan Distribution Electric System, International Journal of Energy engineering, 5(2), 2015, 25-33.

[6] S. Pande and J.G. Ghodekar, Computation of Technical Power Loss of Feeders and Transformers in Distribution System using Load Factor and Load Loss Factor, International Journal of Multidisciplinary science and Engineering, 3(6), 2012, 22-25.

Abstract: Caregiving can be both rewarding and challenging. Literature suggests that family caregivers may experience increased symptoms of psychological and social malfunctioning. However, it may also provide one with opportunities to renew relationships or feel connected to a higher power. The current study is an attempt to investigate how caregiving influences a person's general wellbeing. The sample consisted of 25 caregivers of cancer patients and 25 appropriately matched control.World Health Organization- QOL (1991), Multidimensional Scale of Perceived Social Support by Zimet, et al (1988) and Spiritual Perspective Scale by Reed (1986) were used to asses QOL, Social support and spirituality respectively.

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Abstract: Conventional power inverter systems are normally specified to work with a single nominal battery voltage. This is somewhat restrictive and causes downtimes when d.c power sources of specified voltages are not available. In this work, a push-pull inverter circuit that generates its rated output voltage from either a 12Volts or 24 Volts d.c source was developed. The circuit, based on a PIC 16F877A microcontroller, determines the battery voltage and generates the required MOSFET gate drive signals required to generate a 240 volts r.m.s modified square wave output waveform. The developed circuit and the associated microcontroller firmware were designed and modelled using proteus® software and MicroC software respectively. The circuit was constructed, programmed and then tested.

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,AU J. T. 13(4), 2010.
[2]. Thangam, P. and Kanna, R. R., Effectiveness of Increased and Efficient Sinewave in PWM Architecture, International Journal for
Trends in Engineering and Technology, Vol. 4, Issue 2, 2015.
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International Journal of Emerging Technologies 3 (2), 2012, 101-108.
[4]. Menon, A. and Madhumitha, R , Design and Simulation of Solar –Micro Inverter with Multiple Loads , International Journal of
Advanced Research in Electrical, Electronics and Instrumentation Engineering, Vol. 3, Issue 5, 2014. pp. 9612-9620.
[5]. Dandin, S and Khumari, A, Highly Efficient Pure Sine-Wave Inverter for Photovoltaic Applications with MPPT Technique ,
International Journal of Engineering Research and Technology, Vol. 3, Issue 5, 2014. pp 1837-1842.