Department of Mechanical Engineering;
Matsue College;
National Institute of Technology;
Matsue;
Japan;
Department of Mechanical Engineering;
University of North Sumatera;
Medan;
Indonesia;
Graduate School of Mechanical Engineering;
University of North Sumatera;
Medan;
Indonesia;
Secondary; Chamber; Pre-Vacuum; Chamber; Rubber; Wood; Secondary; Tar; Cracking; Gas; Yield; Gas; Component;