Evaluación ambiental de los fondos documentales de la biblioteca Tomás Navarro Tomás del CCHS-CSIC

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

Handbook of Active Ageing and Quality of Life: From Concepts to Applications

La edición de este libro estuvo a cargo de Fermina Rojo-Pérez y Gloria Fernández-Mayoralas.El documento adjunto contiene la cubierta, portada e índice del libro.This handbook presents an overview of studies on the relationship of active ageing and quality of life. It addresses the new challenges of ageing from the paradigm of positive ageing (active, healthy and successful) for a better quality of life. It provides theoretical perspectives and empirical studies, including scientific knowledge as well as practical experiences about the good ageing and the quality of later life around the world, in order to respond to the challenges of an aged population. The handbook is structured in 4 sections covering theoretical and conceptual perspectives, social policy issues and research agenda, methods, measurement instrument-scales and evaluations, and lastly application studies including domains and geographical contexts.Peer reviewe