Very many prediction models have been used in recent times to estimate transmission loss arising from Bisastic scattering of terrestrial microwave signals into the receiver of Earth-space communication systems operating ...

ABSTRACT A concentrator type solar cooker has been designed and constructed. The concentrator is made up of two concentrating systems: a spherical dish and a reflector field. The spherical dish consisted of segmented plane ...

A solar water heater was designed and constructed using locally available materials. The components of the system are flat plate collector and storage tank. A method of estimating the performance of solar water heater ...

This report presents the result of the computation of intersystem interference due to hydrometeors using the simplified Capsoni Three Dimension (3-D) model when horizontally polarized super-high frequency signals propagates ...

A cabinet drier with dimensions 0.82m x O.4Sm x 0.S2m, having four trays and capable of drying 4kg of palm kernel per hour was constructed. Using electrical heating, hot air is produced and allowed to flow through the ...

In this work, models were developed for calculating the S parameter (amount of positron annihilation with valence electrons in low momentum regions) and W parameter (amount of positron annihilation with core electrons ...

A precise weather data acquisition system capable 01 measuring temperature, pressure and relative humidity has been developed. The system has three sensors AD590JH for temperature, HIH3610-001 for humidity and 24PCCF6DA ...

A review of ionospheric studies is presented with a view to providing some theoretical background on the variations of the ionosphere with altitude, time of the day, season of the year, geographic or geomagnetic location ...

The concentrations of some of the natural radionuclides in the uranium, actinium and thorium series and of 40K in soil samples collected from 9 major towns of Oyo State, Southwestern Nigeria have been determined by ...

This study presents the results of calculations of propagation impairments to millimetre wave signals by spherical raindrops in different types of tropical rainfall. The Mie scattering theory, for spherical raindrops, has ...