corresponds to a decrease of P(0) in region R1;while an increase of P(0) corresponds to a decrease of P(1) in region R2. By taking into account the Debye'smodel on polar fluids [27,28]we assert that polarization P(1), due to orientation of permanent dipoles, shows an increment (increases the number of permanent dipoles) in region R1 and a decrement (decreases the number of permanent dipoles) in region R2. In the latter region dipoles