Search results for " sistema."
showing 10 items of 1920 documents
Medicinal Mushrooms: Bioactive Compounds, Use, and Clinical Trials
2021
Medicinal mushrooms have important health benefits and exhibit a broad spectrum of pharmacological activities, including antiallergic, antibacterial, antifungal, anti-inflammatory, antioxidative, antiviral, cytotoxic, immunomodulating, antidepressive, antihyperlipidemic, antidiabetic, digestive, hepatoprotective, neuroprotective, nephroprotective, osteoprotective, and hypotensive activities. The growing interest in mycotherapy requires a strong commitment from the scientific community to expand clinical trials and to propose supplements of safe origin and genetic purity. Bioactive compounds of selected medicinal mushrooms and their effects and mechanisms in in vitro and in vivo clinical stu…
Note citotassonomiche sul genere Thapsia L. (Apiaceae)
2008
This study aims to clarify the taxonomic states and relations within the genus Thapsia from the Mediterranean area, with particular interest to the populations growing in Sicily. The results of morphological and karyological investigations on living plants, combined with herbarium surveys and literature data, allowed us to define an updated taxonomic profile of the genus Thapsia, with the description of a new species from the island of Lampedusa (SW Sicily), named T. pelagica. Moreover a new taxonomic combination is proposed for the populations of Peloritani Mts. (NE Sicily), which are here treated as subspecies messanensis of T. garganica.
Morphological, karyological and taxonomic remarks on Ferulago nodosa (L.) Boiss. (Apiaceae)
2012
Abstract Western (Sicilian) and eastern (Balcan-aegean) populations of the Balcan-tyrrhenian Ferulago nodosa are reported to be different in some morphological characters, and were considered different species by some authors in XIX century. In this work, fruit and pollen morphologies have been compared in Sicilian and Cretan plants; also, the chromosome number of Sicilian plants has been ascertained. Preliminary results highlight a general homogeneity between the two populations, nevertheless showing significant differences in some parameters (fruit form, pollen size). For this reason, and considering the geographic disjunction of the Sicilian plants, the two populations are proposed to be…
THE MEANING OF ENDEMISM IN PHYTOGEOGRAPHY
2013
The definition of endemism is a relative concept, and is relative to the size of the territory and the hierarchical rank of the taxon one is referring to. The more the territory is small, less you would expect to find in it the whole areal of taxa which ranks are high as a family or an order. Here is the case to cite FAVARGER (1969): "It is the scale that creates the phenomenon." The criterion for the definition of endemism is therefore the exclusive membership to a certain geographical territory taken as a reference, not the size of the range of taxon.
Diversity in the genus Hieracium Linnaeus s.str. (Asteraceae) in Sicily
2015
The present taxonomic and floristic knowledges on Hieracium L. s. str. in Sicily are commented. In total, 11 taxa occur in this island, 10 of which are endemic and 1 has a wider range. For each of these taxa, biological form, phenology, distribution, ecology, chromosome number, conservation, and taxonomy are taken in consideration. A key to the taxa is also provided.
L'approvvigionamento idrico per l'agricoltura
2008
La monografia contiene la descrizione delle fonti di approvvigionamento idrico da acque superficiali e sotterranee, con particolare riferimento alla impostazione del dimensionmento idraulico ed alle problematiche tecniche riguardanti i laghetti collinari costruiti in alveo e fuori alveo.
El Aprendizaje por Competencias y su Evaluación: Una Aplicación para la Asignatura “Macroeconomía”
2010
Debido a la aplicacion del sistema del eurocredito que potencia un curriculum por competencias profesionales integradas a la asignatura “Macroeconomia” (Troncal de 3o de LADE, 12 creditos) es relativamente sencillo establecer una estrecha coordinacion entre la teoria y la practica. Este articulo versa sobre el aprendizaje por competencias y se centra en como trato de conseguir en mi practica docente que mis alumnos adquieran la competencia de saber juzgar de forma critica la realidad economica en base a la informacion existente procedente de noticias de prensa y de series de datos economicos obtenidas de fuentes estadisticas diversas. Para ello presentare la Matriz de Especificaciones utili…
La articulación local-global de sistemas territoriales de producción y de innovación
2009
RESUMEN Frente a la controversia al respecto en economía regional, este artículo defiende la complementariedad entre la innovación regional y global en los sistemas de producción y de innovación (SPI), como clave de la articulación (dinámica, secuencial y recursiva) local-global. Para ello se introduce el concepto de nudos tecnológicos localizados (NUTELO). Los NUTELO son los eslabones de la cadena de valor donde convergen la especificidad de los SPI y el ámbito de mayor densidad de sus relaciones externas. Un esbozo de marco evolucionista se apoya en el estudio de la articulación de la citricultura valenciana con la citricultura catalana y argentino-uruguaya. ABSTRACT The local or global c…
L’Archeologia tra formazione e pratica: il ruolo dell’Università in Sicilia
2014
The relationship between university and political and social institutions in Sicily has undergone a deep transformation since the end of the '80s. Before that period, university, as a teaching and research structure, was deeply linked with political institutions dealing with the management and preservation of cultural heritage; these institutions, on the other hand, offered the main chances of employment for graduates in humanities and archaeology. After that period, university and politic have undertaken instead, completely different ways, especially in the field of cultural heritage, due to a different economic context and a wider ideological change. The role of the university as a place …
Il Sistema informativo degli Archivi di Stato (SIAS) : descrizione, gestione e fruizione del patrimonio documentario dell'Archivio di Stato di Palermo
2007
Il saggio descrive il Sistema Informativo dell'Archvio di Stato di Palermo, nell'ambito del progetto per la descrizione qualitativa e quantitativa, la gestione e la fruizione del patrimonio documentario conservato dagli Archivi di Stato italiani.