Search results for " s.p.a."
showing 10 items of 253 documents
Las políticas de corte neoliberal como procesos de privatización y mercantilización de la universidad pública en España
2021
En este estudio adoptamos un enfoque multinivel, integrando uno supranacional, desde el cual analizamos la influencia de la UE sobre el diseño de las reformas de educación superior y las directrices marca-das en este ámbito; otro nacional, desde el cual estudiamos las reformas políticas de educación superior españolas que se alinean con las directrices europeas; y otro institucional en el que examinamos el im-pacto de las reformas de privatización y mercantilización en la univer-sidad pública española. Además, incluimos un estudio sobre las ten-dencias de privatización de la educación superior en los países euro-peos, con el objetivo de comprender el alcance de las propuestas de la UE y con…
Diseño, síntesis y caracterización de sistemas híbridos. aplicaciones médicas y medioambientales.
2016
El desarrollo que ha experimentado la Química Supramolecular en el campo del reconocimiento ha permitido a los investigadores, dar un paso adelante en el diseño y la síntesis de arquitecturas supramoleculares bien definidas, con un tamaño nanométrico a partir de la autoorganización de los receptores. En este sentido, el descubrimiento de nuevos materiales, procesos y el desarrollo de nuevas técnicas experimentales ha permitido el desarrollo de nuevos nanosistemas con aplicaciones muy innovativas en comparación con las especies por separado. Entre los posibles materiales que se pueden emplear, las nanopartículas presentan un gran interés debido a sus propiedades ópticas, magnéticas, electrón…
Química de coordinación catiónica y aniónica de nuevos poliazareceptores politópicos
2013
La química supramolecular es uno de los campos de la Química que más se ha desarrollado en los últimos 50 años. La importancia de la química supramolecular se ha potenciado por su carácter multidisciplinar, ya que se puede considerar como un triple punto de encuentro entre la Química, la Biología y la Física. La primera definición de química supramolecular se atribuye al Profesor Jean-Marie Lehn que la describió como “la Química más allá de la molécula” en referencia a las entidades organizadas que resultan de la asociación de dos o más especies químicas unidas mediante fuerzas no covalentes. En el presente trabajo nos hemos centrado en la síntesis de receptores con estructuras macropolicíc…
Tethyan vs. Cordilleran ophiolites: a reappraisal of distintctive tectono-magmatic features of supra-subduction complexes in relation to the subducti…
2004
Abstract Supra-subduction zone (SSZ) ophiolites deserve special attention because they represent fundamental markers of intraoceanic convergence and generation of new lithosphere above subduction zones. Moreover, owing to their structural characteristics and location in the overriding plate, these complexes are far better represented and preserved than Mid-Ocean-Ridge-Basalt (MORB) ophiolites in orogenic belts. In terms of their structure, tectonics, and magmatic features, SSZ ophiolites may be classified in two main types: (1) “Tethyan complexes” (such as those of the Albanide-Hellenide belt), which mostly consist of complete and extensive volcanic, dyke, plutonic, and mantle sections with…
Metroplastica isteroscopica: trattamento resettoscopico monopolare versus isteroscopia operativa bipolare
2007
Integrated Bayesian Approaches Shed Light on the Dissemination Routes of the Eurasian Grapevine Germplasm
2021
The domestication and spreading of grapevine as well as the gene flow history had been described in many studies. We used a high-quality 7k SNP dataset of 1,038 Eurasian grape varieties with unique profiles to assess the population genetic diversity, structure, and relatedness, and to infer the most likely migration events. Comparisons of putative scenarios of gene flow throughout Europe from Caucasus helped to fit the more reliable migration routes around the Mediterranean Basin. Approximate Bayesian computation (ABC) approach made possible to provide a response to several questions so far remaining unsolved. Firstly, the assessment of genetic diversity and population structure within a we…
Cultivable Fungal Endophytes in Roots, Rhizomes and Leaves of Posidonia oceanica (L.) Delile along the Coast of Sicily, Italy
2022
The presence of endophytic fungi in the roots, rhizomes, and leaves of Posidonia oceanica was evaluated in different localities of the Sicilian coast. Samples of roots, rhizomes, and leaves were submitted to isolation techniques, and the obtained fungal colonies were identified by morphological and molecular (rRNA sequencing) analysis. Fungal endophytes occurred mainly in roots and occasionally in rhizomes and leaves. Lulwoana sp. was the most frequent of the isolated taxa, suggesting a strong interaction with the host. In addition, eight other fungal taxa were isolated. In particular, fungi of the genus Ochroconis and family Xylariaceae were identified as endophytes in healthy plants at al…
Lo ZEN e l'arte della narrazione dei luoghi
2011
This paper aims at analysing a very well-known Italian neighbourhood, which is located in Palermo and called Zen. This neighbourhood has often been described as a clear example of the worst and most disgraced urban landscapes in Italy, as mass media and local stakeholders shaped its image for their own uses. Through a series of interviews, on-the-spot inspections and the use of other qualitative methodologies, the final goal of this paper is to subvert traditional representations of this place and enforce a plural way of describing it, using research techniques that might position the researcher and his or her own description inside a larger framework. Would geographers, social scientists a…
Functionalised Imidazoporphyrins and their application in catalysis
2017
A broad series of functionalized imidazo[4,5-b]porphyrins was synthesized by the acid-catalyzed condensation of 2,3-dioxo-5,10,15,20-tetraarylchlorins with aromatic aldehydes. Both steric and electronic features of meso-aryl substituents influence on the product yield ranging from 18% to 90%.Single-crystal X-ray diffraction analysis of the structure of zinc(II) 5,10,15,20-tetramesityl-2-(4-pyridyl)-1H-imidazo[4,5-b]porphyrinate showed that this compound forms 1D coordination chains in the solid state.The post-synthetic modifications of imidazo[4,5-b]porphyrins were investigated by performing the Suzuki-Miyaura coupling reaction, preparing water-soluble imidazoporphyrins and linear/angular b…
Host preference in dark septate root endophytes of prairie grasses
2007
International audience; Microbiological examination of prairie grass roots usually reveals the presence of diverse mycorrhizal and dark septate endophytic (DSE) fungi. Some of these fungi can enhance plant resistance to abiotic stress in extreme environments. The host specificity of two DSE fungi isolated from pure stands of crested wheatgrass and Russian wildrye in southwest Saskatchewan was assessed in microcosms. Pure cultures of endophytic fungal isolates were obtained after plating surface sterile root pieces on Potato dextrose agar. Plugs containing these fungi were used to individually inoculate germinated surface sterile seeds of crested wheatgrass and Russian wildrye, and control p…