1,798 research outputs found
Collaborazione e strumenti digitali nel campo della traduzione
No full textLo sviluppo delle tecnologie digitali ha rivoluzionato negli
ultimi decenni il modo in cui comunichiamo e la nostra
capacità di connetterci con il resto del mondo, dando vita
a nuove forme di comunicazione digitale e di condivisione
di idee e conoscenze. Questo ha avuto una grande influenza
anche sul mondo della traduzione, in tutti i suoi aspetti.
Basti pensare all’avvento e allo sviluppo della traduzione
automatica e della traduzione assistita, che hanno portato
anche alla creazione di nuovi profili professionali, ma anche
alle nuove pratiche di collaborazione non professionale su
vasta scala e alle novità nel campo dello studio e della teoria
della traduzione dovute alla svolta tecnologica del campo.
Questo articolo analizza l’influenza dello sviluppo delle
tecnologie digitali sulla diffusione del lavoro collaborativo, in particolare nel campo della traduzione e dopo aver proposto
una classificazione degli strumenti di lavoro collaborativo,
passa ad analizzare nello specifico alcuni strumenti
digitali particolarmente utili nel campo della traduzione
collaborativa, parlando anche di alcune esperienze collegate
a questi strumenti
The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters: The Internal Kinematics of the Multiple Stellar Populations in NGC 2808
No full textSupport for this work comes from STScI grants for HST programs AR-12845 and GO-13297. E.V. acknowledges support by grant NASA-NNX13AF45G. G.P., S.C., F.D’A. and A.R. acknowledge support from PRIN-INAF 2014 (PI: S. Cassisi).Numerous observational studies have revealed the ubiquitous presence of multiple stellar populations in globular clusters and cast many difficult challenges for the study of the formation and dynamical history of these stellar systems. In this Letter we present the results of a study of the kinematic properties of multiple populations in NGC 2808 based on high-precision Hubble Space Telescope proper-motion measurements. In a recent study, Milone et al. identified five distinct populations (A-E) in NGC 2808. Populations D and E coincide with the helium-enhanced populations in the middle and the blue main sequences (mMS and bMS) previously discovered by Piotto et al.; populations A-C correspond to the redder main sequence that, in Piotto et al., was associated with the primordial stellar population. Our analysis shows that, in the outermost regions probed (between about 1.5 and 2 times the cluster half-light radius), the velocity distribution of populations D and E is radially anisotropic (the deviation from an isotropic distribution is significant at the ̃3.5σ level). Stars of populations D and E have a smaller tangential velocity dispersion than those of populations A-C, while no significant differences are found in the radial velocity dispersion. We present the results of a numerical simulation showing that the observed differences between the kinematics of these stellar populations are consistent with the expected kinematic fingerprint of the diffusion toward the cluster outer regions of stellar populations initially more centrally concentrated. Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555
Characterization of integrated hot wire anemometers in regimes of very low gas velocities
No full textDPD Simulations of PMMA-Oleic Acid Mixture Behaviour in Organic Capped Nanoparticle Based Polymer Nanocomposite
No full textDissipative Particle Dynamics has been used to investigate the different morphology of polymer nanocomposites. Such a study was addressed to the definition of a suitable tool for understanding the distribution of oleic acid (OA) capped nanoparticles embedded into poly-methylmethacrylate (PMMA) matrix for the formation of nanocomposite materials. In particular, simulations of PMMA/OA mixtures at different composition have exhibited the self-assembly of amphiphiles to form separated nanosized domains with different morphologies going from spheres, to tubules up to the formation of continuous planar sheets as the OA composition
increases. On the other hand, simulations carried out on nanocomposite systems have shown that NPs do not perturb the observed phase behaviour of PMMA/OA mixtures. In fact, at low OA compositions nanoparticles are confined in the spherical lipid domains to form NP clusters, while at high OA composition NPs appear homogeneously distributed in the continuous lipid domain
Il nuovo delitto di “Combustione illecita dei rifiuti” tra emergenze e criticità (d.l. 10.12.2013, n. 136 convertito con modificazioni dalla legge 6.02.2014, n. 6)
No full textQuesto lavoro analizza la modifica legislativa che ha introdotto nel Testo Unico dell'ambiente (d.lgs. n. 152 del 2006) l'art. 256 – bis relativo alla Combustione
illecita di rifiuti. Si tratta di una fattispecie decisamente problematica, soprattutto perchè risponde ad una logica emergenziale che, com'è noto, spesso produce - nel diritto penale – disposizioni di legge mal redatte e poco coordinate con l'apparato normativo in cui si vengono ad inserire. L'elaborato, allora, analizza dal punto di vista critico la nuova fattispecie, soffermandosi sulla sua reale idoneità a rappresentare mezzo di repressione delle attività ambientali illecite, soprattutto nel quadro di una lotta efficace alle c.d. “Ecomafie”
L'arbitrato nella giurisprudenza italiana
No full textL’opera compie un’approfondita disamina, anche critica, degli orientamenti della giurisprudenza italiana in materia di arbitrato, nelle sue varie forme: rituale e irrituale (libero), obbligatorio e d’equità; nonché degli istituti affini quali l’arbitraggio e la perizia contrattuale. Inoltre, sono oggetto di specifica trattazione gli indirizzi giurisprudenziali sulla disciplina dell’arbitrato in specifiche materie quali l’arbitrabilità delle controversie, la convenzione arbitrale, la nomina, sostituzione e ricusazione degli arbitri, il diritto degli arbitri al compenso, nonché il procedimento arbitrale e l’istruzione probatoria
CO production by AuAg/ZnO catalyst for CO2 valorization
No full textA controllable composition and morphology AuAg/ZnO catalyst, prepared by an easy scalable method, was for the first time explored for the electrocatalytic reduction of CO2. An experimental investigation reveals that the products are H2 and CO, which production rate increase in the presence of ZnO, up to 94.7 % of Faradic efficiency at 0.4 V. It was found that the composition of the bimetallic alloy contributes to the overall CO2 reduction performance. In particular, CO production increases decreasing the Au content in the catalyst alloy. To further investigate the catalytic activity, we have studied the electronic properties of the lattices Ag/Au, by density functional theory calculation. In particular, the Fermi level of transition metals is crucial in determining the binding strength between adsorbed species and surface. One can assume that the d-band centre represents the average energy of the d-electrons
Studi ecofisiologici sui sistemi agroforestali per potenziare la resilienza e la sostenibilità nella coltivazione delle colture erbacee
No full textClimate change is one of the leading threats to agricultural production stability; thus, the development and implementation of sustainable cropping systems becomes absolutely necessary. Silvoarable systems, which represent an integration of trees with crops, offer considerable ecosystem services that can balance some of the detrimental effects of intensive agriculture. New HES poplar clones are studied in growth and phenology-in a traditional plantation design and in a low-density silvoarable alley system.
Different cultivars of winter wheat and cereals, under artificial shading conditions simulating a silvo-arable environment, were studied from 2021 to 2023. It was found that the silvo-arable system showed a diameter increase of 16% for poplars but a height decrease of 8% compared to a conventional plantation. This advantage in growth was because of less competition.
During the period 2019-2024, grain yields of winter wheat next to the trees were equal or even higher compared with the center of the poplar rows. Losses of yield in summer crops, such as maize, because of shading reached up to 27%. Microclimatic differences showed that the west side of the tree rows was better for winter crops, while for summer crops, the east side was less problematic.
Interactions between trees and crops proved to be quite variable. Poplar rows enhanced microclimatic conditions due to soil moisture retention and reduced temperatures but competed for light. Artificial shading trials did manage to simulate agroforestry systems, resulting in increased yields on the west aspect of shading barriers.
Modern varieties of wheat adapted very well to shading but resulted in lower relative yields as compared to local varieties. In barley and triticale, artificial shading caused positive morphological responses, but yields were reduced. Overall, poplars grown in widely spaced silvoarable systems could grow faster due to their improved accessibility to light and soil resources.
The study concludes that dynamic artificial shading may allow species selection for shading tolerance. However, local varieties show mechanisms that could be adaptive under severe shading conditions, while modern wheat varieties grow well under full sun as well as under shading conditions. Growing forage varieties of winter cereals is also advisable, since biomass is less affected compared to grain yields. Further analysis of phenology and photosynthetic parameters will increase genotype identification tolerant to shading
Pollination drop withdrawal in Juniperus communis: response to deposited material
No full textBackground and Aims: The pollination drop is a liquid secretion produced by the ovule and exposed outside the micropyle. In many gymnosperms, pollen lands on the surface of the pollination drop, rehydrates and enters the ovule as the drop retracts. The objective of this work was to study the formation of the pollination drop in Juniperus communis, its carbohydrate composition and the response to deposition of conspecific pollen, foreign pollen and other particulate material, in an attempt to clarify the mechanism of pollination drop retraction. • Methods: Branches with female cones close to pollination drop secretion were collected. On the first day of pollination drop exposure, an eyelash mounted on a wooden stick with paraffin was used to collect pollen or silica gel particles, which were then deposited by contact with the drop. Volume changes in pollination drops were measured by using a stereomicroscope with a micrometer eyepiece 3 h after deposition. The volume of non-pollinated control drops was also recorded. On the first day of secretion, drops were also collected for sugar analysis by high-performance liquid chromatography. • Key Results: The pollination drop persisted for about 12 d if not pollinated, and formed again after removal for up to four consecutive days. After pollination with viable conspecific pollen, the drop retracted quickly and did not form again. Partial withdrawal occurred after deposition of other biological and non-biological material. Fructose was the dominant sugar; glucose was also present but at a much lower percentage. • Conclusions: Sugar analysis confirmed the general trend of fructose dominance in gymnosperm pollination drops. Complete pollination drop withdrawal appears to be triggered by a biochemical mechanism resulting from interaction between pollen and drop constituents. The results of particle deposition suggest the existence of a non-specific, particle-size-dependent mechanism that induces partial pollination drop withdrawal. These results suggest that the non-specific response may decrease the probability of pollen landing on the drop, reducing pollination efficiency. © The Author 2007. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved
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