681 resultados para Pétrarque (1304-1374). Canzone
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Mode of access: Internet.
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Poem.
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"April 1988."
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Mode of access: Internet.
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Mode of access: Internet.
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Half-title: Per le nozze Venezze-Mocenigo.
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Mode of access: Internet.
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Running title: La notte di Caprera.
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Approaches to quantify the organic carbon accumulation on a global scale generally do not consider the small-scale variability of sedimentary and oceanographic boundary conditions along continental margins. In this study, we present a new approach to regionalize the total organic carbon (TOC) content in surface sediments (<5 cm sediment depth). It is based on a compilation of more than 5500 single measurements from various sources. Global TOC distribution was determined by the application of a combined qualitative and quantitative-geostatistical method. Overall, 33 benthic TOC-based provinces were defined and used to process the global distribution pattern of the TOC content in surface sediments in a 1°x1° grid resolution. Regional dependencies of data points within each single province are expressed by modeled semi-variograms. Measured and estimated TOC values show good correlation, emphasizing the reasonable applicability of the method. The accumulation of organic carbon in marine surface sediments is a key parameter in the control of mineralization processes and the material exchange between the sediment and the ocean water. Our approach will help to improve global budgets of nutrient and carbon cycles.
La traduzione della canzone d'autore tra l'italiano e il francese: le scelte, la metrica e il suono.
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Sin dall’infanzia ho sentito un forte legame con la musica e l’amore per il canto e allo stesso tempo per le lingue straniere, mi ha condotto a frequentare il corso di mediazione linguistica interculturale dell’università di Bologna, che univa e fondeva fino alla radice queste due mie passioni. Nel corso della mia carriera universitaria, “au jour le jour” cercavo di cimentarmi in traduzioni di canzoni ma progredendo nei miei studi, più traducevo e più mi rendevo conto di quante difficoltà possa presentare questo genere di traduzione. Le figure retoriche e le frasi idiomatiche presenti in una canzone non solo sono molto difficili da trasportare nella lingua d’arrivo ma spesso e volentieri devono essere totalmente stravolte per poter mantenere il senso e lo scopo del testo di partenza. Insomma, “se vogliamo che tutto rimanga com’è, bisogna che tutto cambi”. (Giuseppe Tomasi di Lampedusa, 1969:40-41). Troppe volte mi sono imbattuto in canzoni già tradotte il quale senso primario andava disperso nell’oblio. In quanto aspirante traduttore so bene cosa significhi dover tagliare o sconvolgere il testo di partenza quando serve ma ove non ve n’è bisogno, non capisco il perché del doverlo fare. In questa mia tesi di laurea presenterò quattro canzoni d’autore: una canzone in italiano ed una in francese ancora non tradotte ed una canzone in italiano ed un’altra in francese che sono già state tradotte. Nel secondo caso, quello dei testi già tradotti, presenterò una mia versione di traduzione nella quale cercherò di rispettare la metrica, l’equilibrio dei suoni e le figure retoriche.
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The 30Si silicon isotope stable was used for assessing the accumulation and translocation of Si in rice and bean plants grown in labeled nutritive solution. The isotopic silicon composition in plant materials was determined by mass spectrometry (IRMS) using the method based on SiF4 formation. Considering the total-Si added into nutritive solutions, the quantity absorbed by plants was near to 51% for rice and 15% for bean plants. The accumulated amounts of Si per plant were about 150g in rice and 8.6g in bean. Approximately 70% of the total-Si accumulated was found in leaves. At presented experimental conditions, the results confirmed that once Si is accumulated in the old parts of rice and bean plant tissues it is not redistributed to new parts, even when Si is not supplied to plants from nutritive solution.
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Due to its outstanding flexibility, batch distillation is still widely used in many separation processes. In the present work, a comparison between constant and variable reflux operations is studied. Firstly, a mathematical model is developed and then validated through comparison between predicted and experimental results accomplished in a lab-scale apparatus. Therefore, case studies are performed through mathematical simulations. It is noted that the most economical form of batch distillation is at constant overhead product composition, keeping the flow rate of vapor from the top of the column constant. (C) 2010 Elsevier B.V. All rights reserved.
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The zero-inflated negative binomial model is used to account for overdispersion detected in data that are initially analyzed under the zero-Inflated Poisson model A frequentist analysis a jackknife estimator and a non-parametric bootstrap for parameter estimation of zero-inflated negative binomial regression models are considered In addition an EM-type algorithm is developed for performing maximum likelihood estimation Then the appropriate matrices for assessing local influence on the parameter estimates under different perturbation schemes and some ways to perform global influence analysis are derived In order to study departures from the error assumption as well as the presence of outliers residual analysis based on the standardized Pearson residuals is discussed The relevance of the approach is illustrated with a real data set where It is shown that zero-inflated negative binomial regression models seems to fit the data better than the Poisson counterpart (C) 2010 Elsevier B V All rights reserved
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The aims of this study were to characterize the spatial distribution of neurodegeneration after status epilepticus (SE) induced by either systemic (S) or intrahippocampal (H) injection of pilocarpine (PILO), two models of temporal lobe epilepsy (TLE), using FluoroJade (FJ) histochemistry, and to evaluate the kinetics of FJ staining in the H-PILO model. Therefore, we measured the severity of behavioral seizures during both types of SE and also evaluated the FJ staining pattern at 12, 24, and 168 h (7 days) after the H-PILO insult. We found that the amount of FJ-positive (FJ+) area was greater in SE induced by S-PILO as compared to SE induced by H-PILO. After SE induced by H-PILO, we found more FJ+ cells in the hilus of the dentate gyrus (DG) at 12 h, in CA3 at 24 h, and in CA1 at 168 h. We found also no correlation between seizure severity and the number of FJ+ cells in the hippocampus. Co-localization studies of FJ+ cells with either neuronal-specific nuclear protein (NeuN) or glial fibrillary acidic protein (GFAP) labeling 24 h after H-PILO demonstrated spatially selective neurodegeneration. Double labeling with FJ and parvalbumin (PV) showed both FJ+/PV+ and FJ+/PV- cells in hippocampus and entorhinal cortex, among other areas. The current data indicate that FJ+ areas are differentially distributed in the two TLE models and that these areas are greater in the S-PILO than in the H-PILO model. There is also a selective kinetics of FJ+ cells in the hippocampus after SE induced by H-PILO, with no association with the severity of seizures, probably as a consequence of the extra-hippocampal damage. These data point to SE induced by H-PILO as a low-mortality model of TLE, with regional spatial and temporal patterns of FJ staining. (C) 2010 Elsevier B.V. All rights reserved.