Dear colleagues, Vol. 4, No. 2, 2000, of the international scientific journal THERMAL SCIENCE is in front of you. We are now facing the fifth year of the THERMAL SCIENCE journal. Yugoslav Society of Heat Transfer Engineers is founder, and VINCA Institute of Nuclear Sciences is publisher of the journal. The aim of the journal THERMAL SCIENCE is to enable better and faster information of the world scientific community about the best recent scientific results achieved in Yugoslavia. Researchers from other countries are, also, welcome to publish their papers in THERMAL SCIENCE, in order to inform Yugoslav scientists with the modern research topics and trends...