89 documents found, page 1 of 9
Novas fronteiras na deteção e biocontrolo de comunidades microbianas em patrimó...
Caldeira, A Teresa; Candeias, ANos últimos anos, o interesse na compreensão do papel dos microrganismos que colonizam superfícies patrimoniais e nas metodologias para a sua caracterização aumentou significativamente. O desenvolvimento de técnicas avançadas de sequenciação de DNA e análises metagenómicas permitiu uma compreensão mais profunda das comunidades microbianas e dos seus impactos. Além disso, técnicas de microscopia e microanálise a...
The Decorated Garden Grotto of Condes de Basto Palace in Évora, Portugal: Micro...
Silva, I; Salvador, Cátia; Arantes, S; Miller, A; Candeias, A; Caldeira, A TeresaThe Eugénio de Almeida Foundation’s Casa de Fresco is a historical monument of valuable historic–artistic significance, which currently reveals an assortment of biofilms due to the proliferation of microorganisms in the stone and rocaille elements. The biodeterioration in this area was studied as part of the Conservation and Restoration Project. We effectively characterized the local microbial community using m...
Microbial induced stone discoloration in alcobaça monastery: A comprehensive study
Silva, I; Dias, L; Salvador, Cátia; Miller, A; Candeias, A; Caldeira, A TeresaThe Alcobaça Monastery (Portugal), a UNESCO World Heritage Site, currently exhibits a high degree of surface alterations of the stone architectural elements inside the church, including an extensive pink coloration in the walls and columns, bacteria biofilms, and salt efflorescences. The main goal was to identify the microbiota that colonizes the walls and columns of this monument, to help custodians and conser...
Social & Emotional Learning through the Integration of Computational Thinking S...
Taskin, C; Gencel, I; Almasan, B; Dumitrache, A; Manolache, D; Candeias, A; Félix, A; Suwalska, A; Zadworna, M; Kossakowska, K; Androvitsanea, AThis ebook is a proposal for a Primary School Course Curriculum about Social & Emotional Learning through the Integration of Computational Thinking Skills.; COMPUSEL - COMPUtational thinking in enhancing primarystudent's SocioEmotional Learning skills.Programme: ERASMUS + - KA2 (Projeto 2021-1-TR01-KA220-SCH000031609)
Synthesis of yellow and red ochre: a preliminary multi-analytical, micro-invasi...
Botticelli, M; Appolloni, G; Candeias, A; Mirão, J; Maras, AThis research aims to underline distinctive features to detect synthetic ochres on paintings, being the use of synthetic red widespread and well documented since Prehistory, while synthetic Mars yellow has been commercialized since the eighteenth century. Mars yellow was synthesized from Fe(NO3)3 and KOH reaction, according to ancient recipes. Hematite was synthesized by heating Mars yellow and other natural ye...
Application of a handheld Raman spectrometer for the screening of colored secon...
Košek, F; Culka, A; Fornasini, L; Vandenabeele, P; Rousaki, A; Mirão, J; Bersani, D; Candeias, A; Jehlička, JThe São Domingos area (Corte do Pinto, Portugal) represents a large sulfide ore deposit in the Iberian Pyrite Belt that was mined primarily for copper and sulfur in the past. Currently, the deserted mine and mine wastes are the reason for the production of acid mining drainage releasing potentially harmful elements. Because metastable secondary sulfates may temporary sink toxic pollutants, the in situ monitorin...
Search of life in a Mars analogue site ‐ microbes and associated biosignatures ...
Miller, A; Gonzalez-Pimentel, JL; Caldeira, AT; Jiménez‐Morillo, N; Laiz, L; De La Rosa, JM; Candeias, A; Moissl‐Eichinger, C; Jo De WaeleSalt caves are scarce and poorly investigated mainly because they only exist in extremely remote and arid regions, such as the Atacama Desert (Chile). The Cordillera de la Sal (San Pedro de Atacama) is one of the most important rock salt karst areas in the world forming a Mars‐like landscape. The detection of microorganisms and biosignatures preserved in halite speleothems from these hypersaline cave systems is...
Assessing aesthetic and structural deterioration in historic buildings – a cont...
Dias, L; Rosado, T; Bhattacharya, S; Candeias, A; Caldeira, A T; Mirão, JAn important part of our cultural heritage assets is built of natural stone since it has always been a material of excellence due to its inherent characteristics. Despite the physical and mechanical properties that give relatively long durability as a construction material, some characteristics are less durable, namely color or eventual surface finishes. The alteration of its aesthetic features may be followed ...
In silico design and experimental evaluation of a new RNA FISH probe for detect...
Arantes, SM; Salvador, Cátia; Martins, MR; Pereira, A; Candeias, A; Caldeira, ATMicrobial colonization and biodeterioration is a growing problem in the preservation of indoor and outdoor patrimonial assets in Cultural Heritage (CH) [1]. Streptomyces species are involved in the biodeterioration of cultural heritage (CH) materials [2,3]. Streptomyces species are Gram-positive aerobic chemoorganotrophic and filamentous bacteria of the Actinobacteria phylum, that grows in several environments,...
On the biodiversity and biodeteriogenic activity of microbial communities prese...
Caldeira, A; Schiavon, N; Salvador, Cátia; Mirao, J; Candeias, AHypogenic caves represent unique environments for the development of specific microbial communities that need to be studied. Caves with rock art pose an additional challenge due to the fragility of the paintings and engravings and to microbial colonization which may induce chemical, mechanical and aesthetic alterations. Therefore, it is essential to understand the communities that thrive in these environments a...