The 2004 issue of PNJ includes five technical papers, five short communications and a commemorative essay. The commemorative essay on the experimental detonation of a nuclear device in 1958 in circumterrestrial space is dedicated in honor of the first death anniversary of Ilya Progogine, the 1977 Nobel Laureate for Chemistry,. The technical papers focus on different applications of nuclear S&T in agriculture, environment and physical science while the various short communications are initial studies that form the core of comprehensive investigative works in the future.