614 research outputs found
Intervista a Mondaini Roscani Architetti Associati
No full textIntervista sul progettare e sull'architettura contemporanea a G. Mondaini all'interno del libro a cura di F. Oddo dal titolo "Architettura in dettaglio. Boutique, edita dalla DEI. Tipografia del Genio Civile, Roma 200
A comparison of growth, gas exchange and productivity in Olea europaea cultivars growing on Mediterranean hills.
No full textThis work concerns the ecophysiology of olive cultivars growing on Mediterranean hills. Our aim was to quantify the photosynthetic efficiency of the cultivars in cultivation. In two hill areas, we tested the phenological and ecophysio- logical variability of olive cultivars grown on non-irrigated land, with different pedo-climatic characteristics. Cultivation area 1 falls within a natural protected area, while area 2 is on farming land. The cultivars selected (‘Biancolilla’, ‘Nocellara del Belice’ and ‘Giarraffa’) belong to the local genetic pool and require different amounts of water. We followed the phe- nological phases of shoot growth and drupe production. We studied leaf anatomy and chloroplast ultrastructure. We meas- ured transpiration, stomatal conductance and net photosynthesis. Photosynthetic efficiency was higher in cultivars growing in cultivation area 2. Shoot growth was favoured in cultivation area 1, while drupe production was greater in cultivation area 2. ‘Giarraffa’ appeared to perform best in cultivation area 1, while ‘Biancolilla’ performed best in cultivation area 2
VARIAZIONI DI ALCUNI PARAMETRI FISIOLOGICI IN OLEA EUROPAEA ‘BIANCOLILLA’ COLTIVATA IN DIFFERENTI REGIMI IRRIGUI
No full textA comparison of growth, gas exchange and productivity in Olea europaea cultivars growing on Maditerranean hills
No full textThis work concern the ecophysiology of olive cultivars growing on Mediterranean hills. Our aim was to qauntify the photosynthetic efficiency of the cultivars in cultivation. In two hill aresa, we tested the phenological and ecophysiological variability of olive cultivars grown on non-irrigated land, with different pedo-climatic characteristics
Effetti dell'applicazione fogliare di glicinbetaina e chitosano su Puccinellia distans (Jacq.) Parl. sottoposta a stress salino
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New mobilizable vectors suitable for gene replacement in gram-negative bacteria and their use in mapping of the 3 ' end of the Xanthomonas campestris pv. campestris gum operon
No full textKatzen F, Becker A, Ielmini MV, Oddo CG, Ielpi L. New mobilizable vectors suitable for gene replacement in gram-negative bacteria and their use in mapping of the 3 ' end of the Xanthomonas campestris pv. campestris gum operon. APPLIED AND ENVIRONMENTAL MICROBIOLOGY. 1999;65(1):278-282.We describe useful vectors to select double-crossover events directly in site-directed marker exchange mutagenesis in gram-negative bacteria. These vectors contain the gusA marker gene, providing colorimetric screens to identify bacteria harboring those sequences. The applicability of these vectors was shown by mapping the 3' end of the Xanthomonas campestris gum operon, involved in biosynthesis of xanthan
Long-term physical evolution of an elastomeric ultrasound contrast microbubble
No full textHypothesis: One of the main assets of crosslinked polymer-shelled microbubbles (MBs) as ultrasound-active theranostic agents is the robustness of the shells, combined with the chemical versatility in modifying the surface with ligands and/or drugs. Despite the long shelf-life, subtle modifications occur in the MB shells involving shifts in acoustic, mechanical and structural properties. Experiments: We carried out a long-term morphological and acoustic evolution analysis on elastomeric polyvinyl-alcohol (PVA)-shelled MBs, a novel platform accomplishing good acoustic and surface performances in one agent. Confocal laser scanning microscopy, acoustic spectroscopy and AFM nanomechanics were integrated to understand the mechanism of PVA MBs ageing. The changes in the MB acoustic properties were framed in terms of shell thickness and viscoelasticity using a linearised oscillation theory, and compared to MB morphology and to nanomechanical analysis. Findings: We enlightened a novel, intriguing ageing time evolution of the PVA MBs with double behaviour with respect to a crossover time of ∼50 days. Before, significant changes occur in MB stiffness and shell thickness, mainly due to a massive release of entangled PVA chains. Then, the MB resonance frequency increases together with shell thickening and softening. Our benchmark study is of general interest for emerging viscoelastomeric bubbles towards personalised medicine
Forme di intensificazione e identità degeneri. Strategie identitarie ed esempi di alterità nel De reditu suo di Rutilio Namaziano
No full textThis paper focuses on Rutilius Namatianus, praefectus Urbi, who around 417 AD. is forced from Rome to return to his native Gaul, to take care of his possessions. He tells of this journey in De reditu suo, after years of political commitment at the highest levels in the city: during the stops of the journey the author provides large portraits of friends and associates, which he praises virtutes and cursus honorum of. The constant reference to the office of the urban prefecture (or other high government offices) suggests the concern of Rutilius for what makes Rome an excellent place of civilization: temples, roads, aque-ducts, ports, infrastructures that were under direct responsibility of praefectus Urbi. These elements are very significant in the very moment of serious identity crisis in the senatorial class. Rutilius through the portraits of his associates builds the image of a so-cial structure that wants to present itself as the true custodian of the values of the senato-rial class, but not really compact and therefore in need of a renewed identity model. On the other side the invectives and the merciless portraits are served for the "others", the anti-models, who counterbalance this model to be renewed; perhaps the most insidious forms of otherness are the degenerate forms of identical, who - contrary to expectations - deny or subvert the identity model of the senatorial class. Finally, examples of perma-nent liminality are the iuvenis of Gorgona and the shameful lineage of Lepidi, real dys-functional models of identity
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