Abstract: A critical analysis of the antibacterial effect of the main representatives of calcium silicate cements (CSCs) was made. An analysis of the most frequently used methods for screening the antibacterial activity of materials has been made. The inhibitory activity of CSCs against major types of microorganisms such as Candia albicans, E. faecalis, and strains streptococcus was evaluated and compared. The antibacterial effects of CSCs are not yet... More

Abstract: This article explores the effect of weathering on the degradation of wood and rocks and discusses its prevention strategies and safety aspects. Weathering, including natural, enhanced, accelerated, silicates, polymer degradation and erosion is discussed in this article. Rocks weather naturally very slowly and gradually. Minerals weathering and silica-rich layer formation during single-stage and two-stage carbonation like serpentinization of... More

Abstract: Dielectric dispersion analysis has been carried out for the first time on a new quaternary ceramic [0.47(Bi0.5Na0.5)TiO3-0.04BaTiO3-0.31Pb(Mg1/3Nb2/3)O3-0.18PbTiO3] having a morphotropic phase boundary composition. The measurement of the dielectric parameters has been carried out in the frequency range of 200 Hz to 2 MHz and temperature range from 30 oC to 300 oC. The material showed high dielectric constant, low dielectric loss, negligible DC... More