We deal with the problem of modelling a radiator/ scatterer using an equivalent radiator. The amounts at determining shape and size radiating surface producing, on region D , electromagnetic field close to that generated by primary radiator/scatterer. For fixed radiator’s shape, we here dimensi...

background: vegetation (food stuff) is grown in soil that contains many radioactive elements such as 238u (uranium), 232th (thorium) and 40k (potassium), which may get deposited either due to radioactive fallout or/and by absorption from the soil and can pose serious health hazards. materials and methods: natural radioactivity, radiological hazards and annual effective dose assessment was carri...