Stone monuments and buildings are susceptible to weathering. Carbonate-based stones especially vulnerable in acidic environments, whereas magmatic more chemical weathering basic environments. To slow down surface corrosion of limestone marble artworks/buildings, protective coatings which inhibit calcite dissolution have been proposed. In this work, samples from two stone types with different po...

background and aims. blood-borne infections such as hepatitis b, hepatitis c and hiv might be transmitted from one individual to another during dental procedures. therefore, sterilization and personal protection procedures are of utmost significance in dental offices. the importance of awareness of cross-infection and antiseptic principles lies in the fact that in most cases it is not possible ...

abstract prostate cancer is one of the life threatening disorders of male. although, over the last two decades, a high rate of overdiagnosis, and overtreatment has lowered the incidence rate of prostate cancer, the treatment or prevention strategies are not enough to control the high rate of disease related mortality. current medical treatment approaches include surgery, radiation therapy, chem...

Early studies suggest COVID-19 vaccine protection varies by ailment and treatment.