484 research outputs found
Intervista a Guillermo Vázquez Consuegra
No full textL'intervista pubblicata su DVD prodotto da Motta Editore con la regia di Flores Zanchi nel Febbraio 2006 dal titolo, 10 architetti stranieri per l'italia
Lo spirito del Concilio nella mente di Papa Giovanni XXIII : l'idea, l'annuncio, la preparazione, l'apertura, la prima sessione (20 gennaio 1959-3 giugno 1963)
No full textComparison of microbiological and fermentation parameters obtained with an improved rumen in vitro technique with those obtained in vivo
No full textThe aim of the present work was to develop and evaluate a rapid in vitro technique to study the activity of rumen micro-organisms and to estimate the nutritive value of feeds. The rumen culture apparatus described here is essentially a batch system, modified in order to obtain conditions of strict anaerobiosis and the balanced growth of all the microbial forms present in the mixed rumen inoculum. Validation of this technique was carried out by comparing studies run simultaneously in vivo and in vitro, analysing microbial flora composition, biochemical parameters of rumen fluid and feed degradability. At the different incubation periods studied, degradability and biochemical parameters had very similar trends in the two systems and the microbiological analysis did not show any significant (P>0.05) differences between the in vivo and the in vitro approaches. The in vitro system described showed the possibility to maintain, for the time studied, a balanced microbial composition, which represents the equilibrium found in the animals. (C) 1998 Elsevier Science B.V
Laurentii Gambarae Brixiani poematum libri III
No full textMit ZierinitialenErscheinungsjahr aus Kolophon: "Basileae, anno salutis humanae M.D.LV. mense Februario."Mit einer Einleitung von Pietro BemboSignaturen: a-z⁸, A-E⁸, F
Ricostruzione 3D dai dati di terreno : struttura del M. Misma, Sudalpino Centrale
No full textA 3D geological modelling methodology is briefly presented in this work. This procedure allows to reconstruct complex geological bodies using topographic and structural-geological data. The main constraints considered for the geological surfaces reconstruction are the geological cross-sections. GIS (Geographic Information System) tools and functions have been exploited for 2D data management, while gOcad® software for 3D modelling. The proposed methodology consists in three main steps: i) data acquisition; ii) data storage in a GIS; iii) 3D surface and volume reconstruction. This methodology has been applied for the 3D reconstruction of the Monte Misma anticline (Bergamo), localized in the thrust and fold systems of the frontal part of the Central Southern Alps. This 3D geological reconstruction allows to check and improve the geological interpretation of the buried surfaces. Moreover the geological surfaces and volumes definitions can be very useful in the different environment of the Earth Sciences (eg. oil exploration; numerical modelling; geophysical data processing, etc.)
Narrative and prosodic skills in children and adolescents with Down syndrome and typically developing children
No full textPurpose: Children with Down Syndrome (DS) show difficulties in language development, in both basic and complex abilities, as narratives. Less is known about the prosodic competence in DS, but the few available studies highlighted the presence of some deficits. Considering the importance of narratives and prosody in communication, the main aim of this study is to investigate these two competencies in participants with DS. Method: 13 children with DS participated (Mean age: 13;04, years; months). Their narrative and prosodic abilities, collected through a storytelling task, were compared with those of two control groups of typically developing (TD) children, one matched for nonverbal mental age (MA, Mean age: 5;03) and the other matched for the mean length of utterance (MLU, Mean age: 5;05). For the narrative competence, we considered both the macrostructural (i.e. quantity of information and story structure) and the microstructural level (i.e. verbal productivity, lexical diversity, syntactic complexity). For the prosodic competence, we took into account acoustic measures linked to intonation (i.e. mean fundamental frequency (f0), pitch range, final speech profile, and speed of speech). Result: The results of the Mann-Whitney test showed that participants with DS produced stories comparable to those of TD children in nearly all the variables considered, except for the syntactic complexity when compared with children of the same MA. Differences between participants with DS and TD children were found in the f0 and the final pitch profile used. Conclusion: Considering the small size of the samples, these preliminary results should be taken with caution. Nonetheless, this study confirms the presence of difficulties in the prosody of speech and in the syntactic competence of children with DS. These difficulties could have consequences on the possibility to communicate efficiently and should be taken into account in rehabilitation programmes
Low-angle normal faults record Early Permian extensional tectonics in the Orobic Basin (Southern Alps, N Italy)
No full textWell-preserved SSE-dipping low-angle normal faults (LANF) active during the Early Permian (Cisuralian) were recognized along the northern margin of the Orobic Basin (central Southern Alps, N Italy). These faults, which escaped most of the Alpine deformations, exhumed the Variscan basement during the deposition of the upper part of the Lower Permian succession (Pizzo del Diavolo Formation). Fault planes show evidence of frictional processes typical of the upper crust associated with hydrothermal circulation, responsible for the deposition of cm to m thick tourmalinite and Uranium mineralization. The recognized LANFs interacted with high-angle normal faults producing half grabens that stored the Lower Permian deposits, where synsedimentary fault activity in their hangingwall is testified by abrupt vertical and lateral facies changes, thickness variations and by soft-sediment deformations. Mesoscopic structures, exposed in the hangingwall of a major LANF (the Aga-Vedello Fault system) along a synthetic high-angle normal fault, include conjugate normal faults, horst-and-graben, domino-style planar and listric faults, which clearly record synsedimentary deformations testified by liquefaction and dewatering structures, typical of pre-consolidation hydroplastic conditions. This exceptional record indicates deformations at shallow crustal level which occurred during the Early Permian along highangle normal faults soling into the LANFs, forming the northern boundary of the Orobic Basin. The outcrop continuity, the perfectly preserved relationships among high- and low-angle normal faults together with the synsedimentary record of fault activity and the occurrence of mesoscopic faults developed during the deposition of the sediments, make this case-study an excellent reference for the analysis of extensional tectonics in synsedimentary conditions. In addition, the occurrence of large LANF systems, typical of a stress regime characterized by a vertical s1, suggests that the Lower Permian Orobic Basin was dominated by pure extension at least in the study area, alternatively to existing interpretations, which favor a transtensional origin of the basin. Strike-slip tectonics can be responsible for a later partial tectonic inversion of the basin, as testified by the angular unconformity with the overlying Upper Permian succession (Verrucano Lombardo), marking a Middle Permian stratigraphic gap
Effects of sublethal concentrations of silver nanoparticles on Escherichia coli and Bacillus subtilis under aerobic and anaerobic conditions
No full textThe present work is aimed at comparing the effects of sublethal concentrations of silver nanoparticles (AgNPs) on the growth kinetic, adhesion ability, oxidative stress, and phenotypic changes of model bacteria (Escherichia coli and Bacillus subtilis) under both aerobic and anaerobic conditions. Growth kinetic tests conducted in 96-well microtiter plates revealed that sublethal concentrations of AgNPs do not affect E. coli growth, whereas 1 lg/ml AgNPs increased B. subtilis growth rate under aerobic conditions. At the same concentration, AgNPs promoted B. subtilis adhesion, while it discouraged E. coli attachment to the surface in the presence of oxygen. As determined by 2,7-dichlorofluorescein-diacetate assays, AgNPs increased the formation of intracellular reactive oxygen species, but not at the highest concentrations, suggesting the activation of scavenging systems. Finally, motility assays revealed that 0.01 and 1 lg/ml AgNPs, respectively, promoted surface movement in E. coli and B. subtilis under aerobic and anaerobic conditions. The results demonstrate that E. coli and B. subtilis react differently from AgNPs over a wide range of sublethal concentrations examined under both aerobic and anaerobic conditions. These findings will help elucidate the behavior and impact of engineered nanoparticles on microbial ecosystems
Developmental trends of communicative skills in children with chromosome 14 aberrations
No full textChildren with chromosome 14 aberrations usually show developmental delays, intellectual disability, neurological disorders and behaviour problems. The aim of the present study is to describe the developmental trajectories of the communicative skills of children with chromosome 14 aberrations, considering the possible relationships between the patterns of language development and the children’s clinical characteristics (e.g., intellectual disability or autistic traits). Longitudinal data on five children (four with linear deletions and one with ring 14 syndrome) followed for 3 years are presented. Four out of five children showed profound intellectual disability, and three out of five showed autistic traits. A high individual variability was found in both vocal and gestural productions. However, only a modest increase in the children’s communicative and symbolic skills was detected over time (e.g., in the quality of preverbal productions). Conclusion: The increase of communicative skills in children with chromosome 14 aberration is very slow. We need to consider the children’s characteristics, in terms of type of chromosome aberration, level of intellectual disability and presence/absence of autistic traits, to predict their possible linguistic outcomes and to give a more realistic expectation to their parents.What is known:• The communicative skills of children with chromosome 14 aberrations are usually impaired.• The presence of autistic traits is frequent in these children.What is new:• The increase of communicative skills in children with chromosome 14 aberrations is very slow.• The level of intellectual disability and the presence/absence of autistic traits appeared to have a role in predicting the possible linguistic outcomes in children with chromosome 14 aberrations
- …
