Recent work has demonstrated that surface colour affects the formation of cyanobacterial
subaerial biofilms on polycarbonate coupons and, in turn, influences their bioreceptivity. To …

In this study, a digital CMOS camera was calibrated for use as a non-contact colorimeter for
measuring the color of granite artworks. The low chroma values of the granite, which yield …

The widespread prevalence of the phenomenon of graffiti and the growth of the removal cost—
in particular in public transport systems—has pushed the research for technical solutions to …

Different decay factors influence the minero-chemical characteristics and the physico-
mechanical properties of building stones. Weathering and exposure to high temperatures …

This paper addresses the detection and monitoring of the development of epilithic
phototrophic biofilms on the granite façade of an institutional building in Santiago de …

The first academic studies on the use of microorganisms in cleaning procedures appeared
in the late 1980s/early 1990s. In the past thirty years, most of such studies have addressed …

Several types of limestones have been traditionally used for building mosques, houses and
sheds in the Fuwairit archaeological site (NE Qatar). These limestones were characterised …

Marbles are widely used as construction materials because of their high resistivity to
common conditions, and to their aesthetic appeal. Aesthetic qualities such as color, gloss …

Lichen mosaics on different-textured schists located in the Coa Valley (Portugal) and Siega
Verde (Spain) archaeological sites were cleaned using different chemicals, namely ethanol …

Graffiti are increasingly observed on urban and peri-urban buildings and their removal
requires a huge financial outlay by local governments and agencies. Graffiti are not usually …