A5051910576- Building materials and conservation
- Archaeological and Historical Studies
- Lichen and fungal ecology
- Conservation Techniques and Studies
- Medieval Architecture and Archaeology
- Cultural Heritage Materials Analysis
- Archaeological and Geological Studies
- Biocrusts and Microbial Ecology
- Geological and Geophysical Studies Worldwide
- Environmental and Ecological Studies
- CO2 Sequestration and Geologic Interactions
- Geochemistry and Geologic Mapping
- Concrete and Cement Materials Research
- Water Quality Monitoring and Analysis
- 3D Surveying and Cultural Heritage
- Botany and Plant Ecology Studies
- Fire effects on ecosystems
- Clay minerals and soil interactions
- Diatoms and Algae Research
- Indoor Air Quality and Microbial Exposure
- Geology and Paleoclimatology Research
- Odor and Emission Control Technologies
- Groundwater and Isotope Geochemistry
- Rural Development and Agriculture
- Hygrothermal properties of building materials
The University of Sydney
2025
Universidade Federal do Vale do São Francisco
2024
Universidade de Santiago de Compostela
2011-2021
University of California, Los Angeles
2020
Xunta de Galicia
2018
Universidad Autónoma Metropolitana
2009
Departamento de Educación
2004
Universidad de Cádiz
2000
Abstract In spite of color being one the physicochemical parameters most commonly used to characterize ornamental stone, there is yet no standardized protocol for measuring this parameter. Such a particular importance characterizing heterogeneous surfaces, as in case granite. The aim present study was determine minimum area and number measurements required granite rocks. A spectrophotometer tristimulus colorimeter, were measure samples, expressed CIE L*a*b* system units. Three considered...
Chlorhexidine (CHX) and cetylpyridinium chloride (CPC) are commonly used as mouthwashes due to their antimicrobial effect. More recently, hyaluronic acid (HA) has also been associated oral health products aiming improve anti-inflammatory effects. This study aimed evaluate the effect of three different CHX-based commercially available on subgingival microbial composition metabolic activity using a multispecies biofilm model. A model composed 33 bacterial species with 7 days maturation Calgary...
SUMMARY A set of well‐drained soils in Galicia, formed from gabbros, amphibolites and schists, with udic moisture mesic temperature regimes, are studied. All but one the surface horizons show an‘exchange complex dominated by amorphous material’(ECDAM); consequently, most classified as Andosols (FAO) or different subgroups Dystrandepts (Soil Taxonomy). The on gabbros frequently have‘andic properties’so, following ICOMAND proposals, five 12 studied may be characterized Andisols. Many have...
The effects of four the most common types surface finish on appearance five varieties ornamental granite, all widely used in building construction and selected for their different colors, were analyzed by means roughness, color, gloss measurements. results demonstrated that finishes produce differences especially lightness parameter (L* ), magnitude these depends color granite is greatest dark colored rocks. However, variation parameters with did not depend no general conclusions could be...
This paper addresses the detection and monitoring of development epilithic phototrophic biofilms on granite façade an institutional building in Santiago de Compostela (NW Spain), reports a case study preventive conservation. The results provide basis for establishing criteria early colonization (greening) its buildings by use color changes recorded with portable spectrophotometer represented CIELAB space. show that parameter b* (associated yellowness-blueness) provides earliest indication...
Abstract A saline‐spray artificial ageing test was used to simulate the effects produced in granites and sedimentary rocks (calcarenites, micrites breccia) under conditions coastal environments. Three main points were addressed this study: durability of different kinds rock salt decay, resulting weathering forms properties involved processes. For this, mineralogical textural characterization each carried out before after test. The soluble content at depths from exposed surfaces also...
Abstract Previous studies have provided evidence that color measurements enable on site quantification of superficial biofilms, thereby avoiding the need for sampling. In present study, efficiency to evaluate what extent pigment production is affected by environmental parameters such as light intensity, combined nitrogen and nutrient availability, was tested with two cyanobacteria, Nostoc sp. strains PCC 9104 9025, which form biofilms stone. Both were acclimated, in aerated batch cultures 2...
The sol-gel process has been found to be successful in applications for the conservation and restoration of stone. However, a well-known drawback materials obtained by this is their tendency crack during drying inside pores treated In article, we present an overview our current research centred on producing crack-free consolidating protecting building A novel synthesis, which surfactant acts as template make pore size gel network coarser more uniform, shown provide effective alternative...
Quantification of phototrophic organisms on solid substrata together with their metabolic activity can be assessed easily, reliably and quickly through measurement the organisms' colour. For that purpose only a chroma meter for able to quantify three components colour is needed. A correlation between these number physiological state was demonstrated. The methodology developed here makes it possible save time materials in comparison traditional microbiological methods. Moreover,...