60 results on '"Palomar, Teresa"'
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52. Evaluación ambiental de los fondos documentales de la biblioteca Tomás Navarro Tomás del CCHS-CSIC
- Author
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Peña-Poza, Javier, Félix Conde, Juan, Palomar, Teresa, Agua, Fernando, García-Heras, Manuel, and Villegas, M.ª Ángeles
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biblioteca ,holdings ,conservation ,library ,conservación ,sensores ,acidez ,sensors ,acidity ,fondos documentales - Abstract
The most innovative procedure for preventive conservation of library holdings, especially those of historical interest, lies in the evaluation of environmental parameters witch have a negative effect on the conservation of such materials. The application of sensors permits for full, accurate and secure monitoring of environmental conditions and allows for the prediction of chemical-physical mechanisms of degradation, as well as of the most suitable procedures for controlling them. The sensors used in the present study were prepared by the sol-gel method and change colour when variations in the evaluated parameters occur. All of the sensors are reversible, reusable and can be regenerated. Temperature, relative humidity, illumination and acidity were the parameters evaluated. In the first stage, conventional apparatus were used to determine the critical ranges of variation for such parameters. Subsequently optical sensors sensitive in such ranges were designed and prepared. These sensors were calibrated and distributed throughout the rooms containing the holdings (approximately 3.200 square meters). The optical response of the sensors (change of colour) was recorded by visible spectrophotometry during the spring and summer of 2009. The use of sensors has the following advantages: low cost, no need for wires or apparatus during exposure, small size, reversibility, and short response time. The resulting data have revealed the environmental conditions of the conservation of the holdings, including environmental acidity, a parameter that could not be evaluated previously through conventional procedures. El procedimiento más innovador de conservación preventiva de los fondos documentales de bibliotecas, especialmente los de carácter histórico, consiste en la evaluación de los parámetros ambientales que afectan negativamente a la conservación de los materiales implicados. La aplicación de sensores permite la monitorización completa, precisa y segura de las condiciones ambientales, predecir los mecanismos quimicofísicos de degradación y los procedimientos más adecuados para controlarlos. Los sensores de este estudio se prepararon por el procedimiento sol-gel y experimentan un cambio de color cuando varían los parámetros a evaluar. Todos los sensores son reversibles, regenerables y reutilizables. Los parámetros evaluados han sido temperatura, humedad relativa, iluminación y acidez. En la primera etapa se utilizaron aparatos convencionales para determinar los intervalos críticos de variación de dichos parámetros. Posteriormente se diseñaron y prepararon sensores ópticos con sensibilidad en esos intervalos, se calibraron y se distribuyeron en las salas de los fondos documentales (aproximadamente 3.200 m2). La respuesta óptica de los sensores (cambio de color) se registró mediante espectrofotometría visible durante la primavera-verano de 2009. El uso de estos sensores presenta las siguientes ventajas: bajo coste, ausencia de cables y aparatos durante la exposición, pequeño tamaño, reversibilidad y tiempos cortos de respuesta. Los resultados han permitido conocer las condiciones ambientales de conservación de los fondos documentales, incluyendo la acidez ambiental que hasta ahora no es posible evaluar con los procedimientos convencionales disponibles.
- Published
- 2011
- Full Text
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53. Effect of soil pH on the degradation of silicate glasses.
- Author
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Palomar, Teresa
- Subjects
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SOIL acidity , *HYDROGEN-ion concentration , *CORROSION & anti-corrosives , *METALLIC glasses , *CHEMICAL processes - Abstract
This paper reports the research on the physical-chemical response of silicate glasses subjected to the action of three natural soils types: acidic, neutral, and basic. The main goal of the study was to characterize the corrosion mechanisms acting upon glasses formulated with chemical compositions that are commonly found in historical glasses through an accelerated aging test that replicates natural burial. Resulting data showed a distinct and recognizable response of each glass type, with pH as the key variable for glass corrosion. Results can be of great significance to historical glass studies, especially in choosing suitable conservation strategies for archeological findings. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
54. Seidia: espill o miratge renaixentista?
- Author
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Esteve Palomar, Teresa
- Subjects
Seidia ,Poesia -- Comunitat Valenciana -- S. XX ,García Girona, Joaquim. Seidia-- Crítica i interpretació - Abstract
Deixant a part prejudicis miops, hem pres com a punt de partida del present estudi un nou enfoc que ens permetera confirmar que, sota l'escorça del llarg poema de tall èpic Seidia hi havia un alé esperonador;un missatge que ultrapassava el llindar de l'enyor historicista, satisfet i anacrònic. Mossén Joaquim Garcia Girona no és pas un poeta més ,desintonitzat i estantís; un cantor d'enyorances vàcues encabides en versos innocus, perpetuadors d'una imatge desfigurada -un miratge al·lucinat- del que una Renaixença autèntica hagués fet esperable. L'autor és un sacerdot renaixentista i la seua obra, Seidia, és el reflex que així ho evidencia., Ignoring short-sighted pre-conceived views, we have adopted, as a starting point of the present study , a new approach that will enable us to state that under the surface of the epic poem Seidia there was a stimulating breath, a message that surpassed the threshold of anachronistic and self-satisfied historicist nostalgia. Rev. Joaquim Garcia Girona is not just another untuned and stagnant poet, he is not a singer of empty nostalgia wrapped in harmless verse which perpetuates a distorted image -a hallucinated image- which could be expected in an authentic Renaissance. The author is a Renaissance priest and his poem Seidia is the evident reflection of this fact.
- Published
- 1995
55. Evaluación ambiental de los fondos documentales de la biblioteca Tomás Navarro Tomás del CCHS-CSIC
- Author
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Villegas, M.ª Ángeles, primary, Peña-Poza, Javier, additional, Félix Conde, Juan, additional, Palomar, Teresa, additional, Agua, Fernando, additional, and García-Heras, Manuel, additional
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- 2011
- Full Text
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56. «Ioesa»: femení singular
- Author
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Esteve Palomar, Teresa
- Subjects
Ioesa ,Alloza, Maximià ,Poesia Catalana -- Comunitat Valenciana -- Castelló -- S. XX - Abstract
Inside the almost monocolor panorama that literature in Castelló de la Plana presents along the first third of the XX century -dominated by a «Iandscape painten» aesthetics-, it shines for its own values «Ioesa»by Maximià Alloza. This is the unique work that shares the purposes of renewing of the Valencian authors in modernistic times. Published in 1914, «Ioesa» was a bomb: his author was accused of having done a foreign piece of work, alien to the usual poetry of that time. As a result of these attacks (certainly, not justified), Maximià Alloza left writing and found shelter in the world of painting.
- Published
- 1990
57. Historical restorations of the Maqṣūrahglass mosaics from the Great Mosque of Córdoba
- Author
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Palomar, Teresa, Schibille, Nadine, Alves, Luis Cerqueira, Hidalgo, Rafael Javier Díaz, and Gomez-Morón, María Auxiliadora
- Abstract
The Great Mosque of Córdoba is the only medieval Islamic monument in al-Andalus that still contains some of its original 10th-century glass mosaic decoration, even though they were significantly altered and restored several times in the 18th, 19thand 20thcenturies. By examining analytical, textual, and graphic evidence, this study attempts to reconstruct the different transformations of the Maqṣūrah,focusing on the glass mosaics in order to assess possible implications for their state of preservation. The results show that high-alkaline glass, which can be associated with modern tesserae,was used to restore the Miḥrāband Sābāṭmosaics. Modern pigments were also detected in the paints that were applied in situto the surface of the colourless glasses. Textual and analytical evidences prove that Bāb Bayt al-Mālmosaic was completely removed in the 20thcentury and a replica with high-lead tesseraewas installed in the same place.
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- 2022
- Full Text
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58. EVALUATION OF CLEANING TREATMENTS FOR TARNISHED SILVER: THE CONSERVATOR'S PERSPECTIVE
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Palomar, Teresa, Ramirez Barat, Blanca, Emilio Cano, Ministério da Ciência, Tecnologia e Ensino Superior (Portugal), and Ministerio de Economía y Competitividad (España)
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Silver ,Cleaning treatments ,Conservation ,Tarnishing ,Silver Sulfide - Abstract
Several treatments appear in the bibliography to clean the tarnished silver. However, the information about the aspect and efficiency of the cleanings is spread or not completely detailed in these works. With this purpose, a worldwide survey has been carried out to identify of the most common treatments for cleaning tarnished silver and the personal experience of professionals about the frequency of use, the cleaning efficiency, the surface appearance, the application speed, the difficulty and the applicability. This paper contains the results of this survey., The authors kindly acknowledge the help to all professionals who answered the survey. This work has been partially funded by the project CREMEL II Ref. HAR2011-22402, the pre- doctoral FPI grant BES-2012-052716 from the Spanish Ministry of Economy and Competitiveness (MINECO), the FCT post-doctoral fellowship (ref. SFRH/BPD/108403/2015) from the Portuguese Ministry of Science and Technology, and GEOMATERIALES 2-CM Program Ref. S2013/MIT-2914. Finally, the authors want to mention the professional support of the Spanish Network on Science and Technology for the Conservation of Cultural Heritage (TechnoHeritage).
59. COMPOSITION, PRESERVATION AND PRODUCTION TECHNOLOGY OF AUGUSTA EMERITA ROMAN GLASSES FROM THE FIRST TO THE SIXTH CENTURY AD.
- Author
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Palomar, Teresa, Garcia-Heras, Manuel, Sabio, Rafael, Rincon, Jesus-Maria, and Villegas, Maria-Angeles
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SIXTH century , *DRINKING glasses , *ENERGY dispersive X-ray spectroscopy , *SCANNING electron microscopy , *SPECTROPHOTOMETRY - Abstract
This paper presents the results derived from an archaeometric study undertaken on glass samples from the Roman town of Augusta Emerita (Mérida, Spain). The main goal of the research was to provide for the first time some compositional and technological insights into the glass finds unearthed in this town. Glass samples from different sites and chronology, either from inside or from outside the perimeter of the ancient town and from the first to the sixth century AD, were analyzed and characterized through optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray microanalysis (EDS), X-ray fluorescence (XRF) spectrometry and VIS spectrophotometry. Resulting data indicated that all the samples studied were natron-based soda lime silicate glasses, even though two chronological and compositionally distinct groups were distinguished. One composed of Early Empire glasses and a second one composed of glasses from the fourth century AD onward, which was characterized by the presence of the so-called HIMT (high iron, manganese, and titanium) glasses. Comparison with coeval glasses suggested that Augusta Emerita shared the same trade glass circles than other contemporary Roman towns, within the frame of a secondary production scale. Finally, some outstanding differences connected to composition and chronology were found, since Late Roman glasses presented a higher and distinct degree of alteration than Early Empire ones. [ABSTRACT FROM AUTHOR]
- Published
- 2012
60. A Indústria dos segredos: os arcanos de vidro portugueses dos séculos XVIII-XX
- Author
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Santos, Ana Catarina Reis, Coutinho, Inês, Palomar, Teresa, and Dabas, Prashant
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Portugal ,Séculos XVIII-XX ,Engenharia e Tecnologia::Outras Engenharias e Tecnologias [Domínio/Área Científica] ,Arcanos ,Reproduções de vidro ,Vidro de cristal de chumbo ,Vidro de cristal de potássio - Abstract
Esta investigação teve como objetivo iniciar um estudo sistemático de quais seriam as composições de vidro utilizadas nas fábricas portuguesas entre os séculos XVIII e XX. Para tal, foram estudados os três arcanos conhecidos de fábricas de vidro portuguesas. Os arcanos – cadernos de apontamentos secretos – são atribuídos a fábricas e/ou vidreiros portugueses e contêm informação valiosa sobre a produção de vidro em Portugal desde o seu apogeu, século XVIII, até o seu declínio aproximado no século XX. Deste arcano foram selecionadas receitas de vidro de cristal incolor, uma das composições mais típicas neste período, pertencentes aos três arcanos de vidro portugueses conhecidos até à data – cinco receitas do arcano da Marinha Grande, cinco receitas do arcano da Fábrica das Gaivotas e três receitas do arcano de Castro e Oliveira Guerra. De modo a caracterizar os vidros reproduzidos recorreu-se a um conjunto de análises complementares como a micro fluorescência de raios-X dispersiva de energias, espetroscopia de absorvância de UV-Vis, calorimetria diferencial de varrimento, dilatometria, dureza Vickers, microscopia ótica e micro espetroscopia de Raman. As receitas selecionadas comprovaram-se viáveis de reproduzir e com boas propriedades térmicas para permitir a trabalhabilidade e criação de peças. Através dos testes de dureza concluiu-se que o vidro resultante permite a aplicação de técnicas de decoração como a gravação e lapidação, muito utilizadas pela Europa no período em questão. Foi comprovada também a semelhança em termos de composição com alguns dos vidros históricos expostos em museus portugueses e atribuídos a produção nacional. Foi ainda discutido o valor de cada arcano enquanto objeto histórico. A reprodução destas amostras irá permitir efetuar testes de envelhecimento e criação de propostas de conservação, bem como a construção de uma base de dados de composições da época, de modo a ser possível fazer atribuições dos vidros históricos, até à data de proveniência desconhecida, a indústrias portuguesas.
- Published
- 2018
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