Author:Ndhundhuma, I; Hauser, C; Scalfi-Happ, C; Rück, A; Steiner, RDate:Aug 2011The exposure of a photosensitizer to visible light, preferably laser light in the red region, in the presence of molecular oxygen results in a photochemical reaction described as photodynamic therapy (PDT). Photodynamic therapy is increasingly ...Read more
Author:Anochie-Boateng, Joseph; Komba, Julius J; Mvelase, Gculisile MDate:Jun 2013There is a need to improve the measurements of shape characteristics of aggregates and ballast materials used in the construction of road, airfield, and railway track infrastructures. The fundamental shape properties of aggregate and ballast, ...Read more
