A5042224461- Building materials and conservation
- Conservation Techniques and Studies
- Cultural Heritage Materials Analysis
- Biocrusts and Microbial Ecology
- Lichen and fungal ecology
- Bacterial biofilms and quorum sensing
- Indoor Air Quality and Microbial Exposure
- Geography and Education Methods
- Archaeological and Geological Studies
- Water Quality Monitoring and Analysis
- Educational Technology in Learning
- Fire effects on ecosystems
- Geochemistry and Geologic Mapping
- Geology and Paleoclimatology Research
- Diatoms and Algae Research
- bioluminescence and chemiluminescence research
- Microbial Metabolism and Applications
- Environmental and Ecological Studies
- Geological and Geophysical Studies Worldwide
- Tree Root and Stability Studies
- Radio, Podcasts, and Digital Media
- Public Spaces through Art
- Impact of Light on Environment and Health
- Water Treatment and Disinfection
- Light effects on plants
Universidade de Santiago de Compostela
2014-2024
Alabama Agricultural and Mechanical University
2024
Iberia (Spain)
2022
University of Oxford
2020-2021
University of Milan
2014-2020
Hospital Universitario Fundación Alcorcón
2001-2017
Harvard University
2014-2016
Edison (Italy)
1969-1970
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...
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 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...
This study evaluated whether exposing samples of granite colonized by a natural biofilm to artificial daylight or UV-A/B/C irradiation for 48 h enhanced removal the with chemical product previously approved conservation monuments European Biocide Directive. Rodas granite, which is commonly found in stone-built heritage Galicia (NW Spain), was naturally sub-aerial biofilm. The efficacy cleaning method relative uncolonized surfaces and control without previous irradiation, treated dry-brushing...
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...
The first academic studies on the use of microorganisms in cleaning procedures appeared late 1980s/early 1990s. In past thirty years, most such have addressed removal nitrate and sulphate salts organic matter from surfaces by using non-pathogenic anaerobic microorganisms, mainly sulphate-reducing bacteria. successful microbes graffiti paint remains, however, a work progress. Biocleaning to remove is not simple task, because complex chemical composition paints. This study looks at ways...