The paper presents the investigation of some properties of thermoplastic polymer composite and the modification of the structure of the material during the aging proces. Polypropylene as the matrix and talc as the reinforcing filler were used to prepare the particle-reinforced composite. Two experimental methods were used: differential scaning calorimetry (DSC) and electronic and optical microscopy, to determine the changes in physical and morphological

Study concerning the effect of ageing on the properties and structure of some composite materials based on talc-filled polypropylene. Part II: Electronic microscopy

The low-energy laser radiation induces various effects on biological systems. While the thermal mechanism of the interaction of the laser radiation with the biological systems is well known, not the same is the case for the non-thermal effects i.e. non-concerning the temperature increase. This paper put in evidence two competing phenomena in laser effects induced by low energy laser radiation on the growth of the yeast cell colonies and presents

The study of the contact between a liquid and a solid surface and the behavior of some materials in contact with different liquids has a big practical interest, because this behavior can affect the whole system where the material is used. The study can be performed by the surface energy determinations in several conditions. This paper presents a study on the behavior of some materials in contact with different liquids, based on the Kaeble method