Una breve historia de la Transición desde Canarias

Esta colaboración pretende abordar, con propósito divulgativo, la etapa de la historia de España, y de Canarias, que conocemos en sentido amplio como Transición (c.1973-1982). Un corto pero agitado periodo —que abarca los años finales del mandato de Franco (tardofranquismo) y los primeros de su sucesor a título de rey, Juan Carlos I— solo asimilable, por su repercusión histórica en el siglo XX, a la década de los treinta

Los tiempos están cambiando: ¿una "prodigiosa" década?

: El objetivo de esta colaboración es ofrecer, con ánimo divulgativo, una apretada síntesis de los años sesenta del siglo XX. Un decenio que el imaginario colectivo tiene por prodigioso, pero cuya complejidad —como se muestra en las páginas que siguen— va mucho más allá del tópico. Al igual que en colaboraciones anteriores, el autor inserta constantes alusiones a la historia de Canarias con el fin de contextualizar el pretérito insular en el marco general de aquella década

Materiales para la docencia: la Transición

La siguiente selección de documentos para uso docente complementa la información contenida en «Una breve historia de la Transición desde Canarias», publicada en el número anterior de CLIOCANARIAS. Gráficos, mapas, imágenes, textos... han sido compilados para su manejo en el aula por alumnado de estas islas de dieciséis años en adelante (se incluyen materiales específicos de ámbito insular sobre ese proceso histórico, c. 1973-1982)

Un gran salto para la humanidad

El siguiente texto-guía, y los documentos y actividades que lo acompañan, adelantan un apartado del capítulo dedicado a la década de los sesenta que su autor incluirá en el Cuaderno de Aula "Los tiempos están cambiando (1960-1989)", aún en preparación. La conquista del espacio por las superpotencias de la época en el marco de la Guerra Fría, y una parte del papel que durante su transcurso jugó el archipiélago canario, se muestran aquí con un propósito ante todo didáctico

Effect of pork fat addition on the volatile compounds of foal dry-cured sausage

This is the postprint (accepted manuscript) version of the article published in Meat Science https://doi.org/10.1016/j.meatsci.2012.03.006 This manuscript version is made available under de CC-BY-NC-ND 4.0 licenseThe effect of fat content on volatile compounds from foal dry-cured sausage was studied. Three batches (10 units per batch) of dry fermented sausages with different pork back fat content (5%, 10% and 20%) were manufactured; low fat (LF), medium fat (MF) and high fat (HF), respectively. A total of 45 volatile compounds were extracted by purge-and-trap and identified by GC–MS in the headspace of the batches. The mixture comprised 11 terpenes, 15 esters, 14 hydrocarbons and 2 alcohols. Spices were responsible for the generation of 14 volatile compounds comprising terpenes and hydrocarbons. After 49days of ripening volatile compounds from spices represented 52.9, 38.9 and 31.2% of the total area for samples from LF, MF and HF batches, respectively, while lipid autooxidation was responsible for the generation of 8 volatile compounds. The PCA offered a good separation of the mean samples according to their fat content.Authors are grateful to Xunta de Galicia (Conselleria de Medio Rural) for the financial support. Special thanks to Monte Cabalar (A Estrada, Pontevedra) for the foal samples supplied for this research.S

Use of limestone filler as a sorbent for the removal of As(V), Pb(II), Cu(II), Zn(II) and Cd(II) in contaminated sites

Many of the approaches used to treat soils contaminated by heavy metals are invasive, and do not restore the natural equilibrium of the environment [1]. For this reason, one of procedures used to stabilise heavy metal-contaminated soils in situ is to directly add amendments, which, while they may not totally eliminate toxic elements, help natural retention mechanisms, induce sorption and reduce mobility and bioavailability. In this respect, the use of calcareous materials may be an excellent, eco-friendly way for recovering this type of soils [2], and this communication reports studies made in our laboratory for such a purpose. The influence of different variables in the preparation of mixtures used to stabilize contaminated soils (soil pH, temperature and composition of the contaminated soil / limestone filler) was studied by means of a factorial experimental design. The main interaction effects of the factors obtained on different contaminated soils were used along with the results of the physicochemical and mineralogical characterization in the same data matrix to be analyzed by principal components analysis (PCA). To evaluate the optimal values of the variables, spectroscopic techniques were used to measure the level of leached metals (Pb, Cd, Cu, As, Zn and Fe). The environmental conditions were simulated and controlled by means of a climatic chamber to evaluate simultaneously the processes of geochemical alteration and passivation of the mixture. The results obtained showed that the corresponding factors of the experimental design may be an important source of information to show correlations on some of the most significant variables such as the concentration of metals and, in this way, optimize the use of the in situ stabilizer

Los medios digitales como vehículos educadores para los más jóvenes : el uso correcto del lenguaje y la formación en valores. Una visión panhispánica

Los medios digitales adquieren hoy día una responsabilidad especial derivada de su función social de educar y formar en valores a los más jóvenes, a quienes se les puede marcar el mejor camino a seguir favoreciendo la generalización y mantenimiento de un estilo de vida basado en la satisfacción del esfuerzo, el juego limpio, la solidaridad y el compromiso por la paz social. Además, este tipo de periodismo ha de explotar su verdadero potencial preservando y fomentando un uso correcto del idioma español entre la ciudadanía. En el caso particular de la lengua española, Internet, dado su carácter universal, aparece como el canal con mayores posibilidades para fomentar un uso panhispánico del idioma.Nowadays online media have an special responsability for educating underage children through principles and values in order to lead them by the right way to acquire and maintain a lifestyle based on effort and job satisfaction, fair play, solidarity and commitment to social peace. In addition, this kind of journalism has to exploit its real potential preserving and promoting a correct use of the Spanish language among citizens. In the particular case of the Spanish language, Internet, given its universal nature, appears as the platform with major possibilities to spread a panhispanic use of the language

Strategies for the Valorization of Date Fruit and Its Co-Products: A New Ingredient in the Development of Value-Added Foods

Date palm trees (Phoenix dactylifera L.) are traditionally cultivated in South-West Asia and North Africa for date fruit consumption, although in recent years, its consumption has increased worldwide, and its cultivation has spread to other areas of America, sub-Saharan Africa, Oceania, and Southern Europe. During date fruit processing, several types of by-products are generated, such as low-quality dates or seeds, which along with date fruit, represent an excellent source of dietary fiber and bioactive compounds such as flavonoids, tannins, carotenoids, tocopherols, and tocotrienols. Therefore, this review provides information on the processing of dates fruit and the value-added by-products generated from them as well as their applications in different types of foods for the development of foods with an enhanced nutritional and functional profile. The incorporation of date fruit and their co-products in food formulations will help to cover the current consumer demands for foods made with ingredients of natural origin and with health properties beyond the merely nutritional