On 17 October 2008 the scientific community lost a great friend and colleague with the sudden and unexpected death of the Head of the Slovakian Association, Professor Jan Dusan Skalny´.  The professional career of Jan Dusan Skalny´ was entwined with the Comenius University in Bratislava. Jan Dusan started his career as a researcher and scientist in 1966 at the Department of Experimental Physics. Initially focused on high pressure discharges, he later extended his interest to electron and ion processes related to electric discharges and plasma. His career, which had been restricted during the Communist era in former Czechoslovakia, developed rapidly after the fall of the iron curtain in 1989. In 1991 he obtained the position of associated professor and in 1998 full professorship in Plasma Physics at the Comenius University. During the period 1996 – 1999 he was head of the Department of Plasma Physics at the same university. Jan Dusan was an open, friendly person. He was ready to help and collaborate with colleagues from home and abroad. He actively contributed to several European and international projects and played a key role in the formation of the Slovak-Euratom Association. Jan Dusan’s personality, joy of living and enthusiasm for science made his friendship a rewarding and memorable experience. He will be sorely missed.