Fonte de cor verde na Scriptoria portuguesa - uma abordagem arqueométrica
Bibliographic record
Abstract
ABSTRACT: Green colour sources in Portuguese Scriptoria-an archaeometric approach - This thesis presents the holistic analysis of a set of eight manuscripts produced at the Portuguese scriptorium of Alcobaça monastery during the 12th-16th century: Alc. 433, Alc. 260, Alc. 166, Ms 17, Alc. 167, Alc. 255, Alc. 341, and Alc. 26, currently preserved at the Biblioteca Nacional de Portugal and National Archive of Torre do Tombo, Lisbon-Portugal. The work aimed to study the chronological use of green pigments in the Portuguese scriptorium of Alcobaça and outline the history of the green paint colour sources over three centuries of activity with a chronological timeline. The study also contributes fresh input into the discussion about the possible presence of verdigris in copper-proteinate paints. The representative folia of the above-mentioned manuscripts were characterized following a holistic approach based on liturgical analysis and material characterization, making use of in-situ non-invasive analysis (h-EDXRF and UV-Vis-NIR-SWIR FORS). The Principal Component Analysis (PCA) of reflectance spectra of historical green paints indicates that the manuscripts produced in the last quarter of the 12th century might have used copper proteinate as a green colour source. The years 1191-early 13th century saw a transitional phase between copper-proteinate to malachite, for a brief return to copper-proteinate close to the 15th-16th century. From the first half of the 13th century to the first half of the 14th century, malachite was used fully. But again, they shifted to copper proteinate around the 15th -16th century. h-EDXRF data also substantiated the PCA analysis results. Based on these findings, a timeline of the use of green pigments in the Portuguese scriptorium of Alcobaça during the 12th-16th century was proposed; - RESUMO: A presente tese apresenta a análise holística de um conjunto de oito manuscritos produzidos no scriptorium português do Mosteiro de Alcobaça durante os séculos XII-XVI: Alc. 433, Alc. 260, Alc. 166, Ms 17, Alc. 167, Alc. 255, Alc. 341 e Alc. 26, que atualmente se conservam à guarda da Biblioteca Nacional de Portugal e do Arquivo Nacional da Torre do Tombo, Lisboa-Portugal. O trabalho teve como objetivo estudar o uso de pigmentos verdes no scriptorium português de Alcobaça, e de estabelecer a história do uso de pigmentos verdes, numa abordagem cronológica, ao longo de três séculos de atividade do scriptorium. O estudo também contribui com novas informações para a discussão sobre a possível presença de verdigris nas tintas à base de proteinatos de cobre. Os folios representativos dos manuscritos mencionados foram caracterizados seguindo uma abordagem holística, baseada na análise litúrgica e caracterização material, fazendo uso de análise não invasiva in situ (h-EDXRF e UV-Vis-NIR-SWIR FORS). A análise de componentes principais (PCA) dos espectros de refletância das tintas verdes históricas indica que os manuscritos produzidos no último quartel do século XII podem ter usado proteinato de cobre como fonte de cor verde. As tintas verdes produzidas nos primórdios da atividade do scriptorium, isto é, de 1175 a 1191, apresentam uma formulação à base de proteinatos de cobre. O período de 1191 até o início do século XIII revelou-se um período de transição do proteinatos de cobre para a malaquite, para um breve retorno ao proteinatos de cobre no período mais próximo do séculos XV-XVI. Da primeira metade do século XIII à primeira metade do século XIV, a malaquita foi plenamente utilizada. Estes resultados foram corroborados pela análise elementar das tintas por h-EDXRF. Com estes resultados, propõem-se, assim, nesta dissertação um cronograma para o uso de pigmentos verdes na produção de manuscritos iluminados no scriptorium de Alcobaça entre os séculos XII e XVI.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.002 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".