February 2012

Recent advances of distributed optical fiber Raman amplifiers in ultra wide wavelength division multiplexing telecommunication networks

  Recently, many research works have been focused on the fiber optic devices for optical communication systems. One of the main interests is on the optical amplifiers to boost a weak signal in the communication systems. In order to overcome the limitations imposed by electrical regeneration, a means of optical amplification was sought. The competing technology emerged: the first was Raman amplification. One...

Author(s): Abd El–Naser A. Mohamed, Ahmed Nabih Zaki Rashed and Mahmoud M. A. Eid

February 2012

Investigation into the kinetics of biodegradation of crude oil in different soils

  An experimental study was conducted to examine crude oil degradation in different soil (clay, sandy loamy and swampy soil) of 1, 2, 3, 4 and 5 ml × 10 kg-1 pollution. The polluted crude oil and soil samples were obtained from Niger Delta area of Nigeria and microbial analysis were conducted on the samples for the purpose of identification, isolation and characterization of possible microbes with a...

Author(s): C. P. Ukpaka