1,721,024 research outputs found
Selective Synthesis of 2-Alkenylphenols and 2,2-Dialkyl-2,3-dihydrobenzofuranes from 2-Hydroxybenzyl alcohols
No full textSelective synthesis of 2-alkenylphenols and 2,2-dialkyl- 2,3-dihydrobenzofurans from 2-hydroxybenzyl alcohols
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Extraction and Selective Separation of Long-Lived Nuclides By Functionalised Macrocycles
No full textCaratterizzazione geologica e litologico-tecnica delle piane del Serchio e della Turrite Secca in prossimità di Castelnuovo di Garfagnana (Lucca)
No full textThe paper illustrates the geologic, geomorphic and litho-technical characteristics of the area of Castelnuovo di Garfagnana, in northern Tuscany (Italy). In Tuscany, the Regional Administration promotes the VEL (Valutazione Effetti Locali, Local Effects Evaluation) programme in Lunigiana, Garfagnana and Media Valle del Serchio, high seismic risk territories in Massa-Carrara and Lucca Provinces. In detail, this programme is aimed to identify and evaluate homogeneous areas for the local seismic response to an expected earthquake. Thus, the possible effects of such an earthquake on inhabited centres, facilities and lines of communication will be determined. Among the selected villages, Castelnuovo di Garfagnana is an ancient little town, a cultural and social-economic pole in the middle-upper Serchio River valley, where many intense earthquakes occurred. Geologic, geomorphic and geotechnical characteristics of the Castelnuovo area were studied, by means of geologic survey, seismic prospecting and borehole logging, which allowed a sound knowledge of surface and underground geologic and geotechnical features of the Castelnuovo area. Such a knowledge provided the seismic modelling of the site with a fundamental basis
p-t-Butyl-calix[4]arene Tetracarboxylic Acid. A Water Soluble Calixarene in a Cone Structure
No full textDetermination of the stability conditions of a rock slope using an integrated geological, geomorphological and lithotechnical approach: the example of Bolognana (Lucca - Italy)
No full textThe slope of the Costa delle Calde is affected by numerous gravitational mass movements, both active and of large dimensions. In this study its present conditions of stability are evaluated. The various tools of inquiry made it possible to recognize the formations and lithotypes present along the slope, provide a general picture of the complex structure of the slope and identify the forms, deposits and processes, superficial and deep, due both to gravity and to the action of the surface flowing waters. Moreover, the outcropping formations and the covers were characterized from a lithologic-technical point of view, in an analysis whose aim was the identification of classes with homogeneous geomechanical characteristics. The structure of the rock masses and the complex network of discontinuities present within them were examined. In the situations considered most critical, in particular along the valley main road, possible kinematics, deriving from the sliding of rock wedges, were analyzed. From these data it was possible to assess the geomechanical characteristics and the conditions of the rock masses that constitute this slope. We believe that the data in question, appropriately modified for comparison with the climatic elements, can contribute to the definition of landslide hazard in this area
Selective calix[4]arene-based sensors for neutral organic analytes
No full textThe sensing ability of functionalized calix[4]arenes has been rested toward vapours of organic analytes by coating mass sensitive devices (QCM). Only calix[4]arenes having highly preorganized structure are able to discriminate, through specific host-guest interactions, small organic analytes having acidic C-H bonds like nitromethane and acetonitrile
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