24 research outputs found
Ritorno alla geografia umanistica di David Seamon: prime riflessioni
No full textIl contributo si propone di esaminare l’approccio del geografo David Seamon in relazione a una delle sue opere più conosciute e influenti. Collocate le teorie e la metodologia di Seamon nel quadro della geografia umanistica coeva e in quello del pensiero fenomenologico, il contributo analizza alcuni studi direttamente legati alle intuizioni di Seamon e ne dimostra, infine, tanto il valore attuale quanto i potenziali impieghi per lo sviluppo di nuove analisi geografiche dei luoghi.The article seeks to examine geographer David Seamon’s approach with regard to one of his most known and influential works. After classifying Seamon’s theories and method according to humanistic geography and phenomenological philosophy, the article analyses some studies that deal with Seamon’s ideas. In the end, the article demonstrates the present value of the approach developed by Seamon and its potential recourses for new geographical analysis of places
Idéologie et langage en Italie
No full textIdeologie et langage en Italie (L. Formigari) The author notes the influence of the Ideologists, after that of Condillac, on linguistic studies in Italy, in spite of the suspicion aroused by the materalist views that are supposed to accompany their philosophical positions. As early as 1796, there appears a trend of thought close to Ideology, which aims at theorizing on the relationship between language, society and culture. This was a fundamental problem for a country that had not yet found its linguistic or political unity. The substantial bibliography in this article brings up numerous points concerning research on the influence of the Ideologists.</jats:p
Molecular and functional evolution of Tetrahymena metallothioneins: new insights into the gene family of Tetrahymena thermophila.
No full textA new metallothionein (MTT-5) gene isoform has been cloned and characterized from the ciliate Tetrahymena thermophila. Its amino acid sequence shows only limited similarity with other Tetrahymena MTs. To investigate the transcriptional activity of this gene toward heavy metals (Cd, Cu, Zn), mRNA levels were evaluated by real-time quantitative PCR. Results show that the three metals induce different MTT-5-mRNA levels, Cd treatment eliciting the most effective induction in the first 30 min. Phylogenetic analyses of all Tetrahymena MT protein sequences revealed that MTT-5 is closely related to Cd-induced isoforms and quite separate from Cu-induced ones. Our results indicate that Cd and Cu MTs diverged early in evolution, before the speciation event which separated the Tetrahymena borealis group from the Tetrahymena australis group. The mutation rate in the Tetrahymena MT group is heterogeneous, being very low for MT-1 and MTT-1 and higher for the other isoforms, particularly for MTT-5, which shows the maximum divergence among the Cd-induced MTs. This observation, together with the evidence of its inducibility by Zn – a unique condition among T. thermophila MTs – indicates that MTT-5 underwent a particular evolutionary history, independent of other MT isoforms
Linguistic Pathologies in Ancient Greece: Aristotele on Aphasia
No full textThis papers deals with linguistic pathologies in ancient Greece, especially in Aristotle. All the author and literary text before Aristotele (Herodotus, Plato and so on) are considered. In the Corpus Aristotelicum there several passages about aphasia. Probl. , books x and XI are particularly relevant. In the biological works we read that little children , when they learn language , stutter. They behave, then as people affected by psellotes and traulotes. Ischonophonia is the most severe language desease Aristotle deals with: It consists of the distruction of rhythm and prosodic features of language. So, it can be concluded that acquisition ad loose of language has the same shape and pattern, in Aristotle as well as in Roman Jakobson; and prosodic featurs ar more relevant than phonetic features
Idéologie et langage en Italie
No full textIdeologie et langage en Italie (L. Formigari) The author notes the influence of the Ideologists, after that of Condillac, on linguistic studies in Italy, in spite of the suspicion aroused by the materalist views that are supposed to accompany their philosophical positions. As early as 1796, there appears a trend of thought close to Ideology, which aims at theorizing on the relationship between language, society and culture. This was a fundamental problem for a country that had not yet found its linguistic or political unity. The substantial bibliography in this article brings up numerous points concerning research on the influence of the Ideologists.Formigari Lia, Romer C. Idéologie et langage en Italie. In: Histoire Épistémologie Langage, tome 4, fascicule 1, 1982. Les idéologues et les sciences du langage. pp. 137-141
Functional Characterization of the 5'-upstream Region of MTT5 Metallothionein Gene from Tetrahymena thermophila.
No full textTra intelligenza animale e passioni umane: discussioni sull'immaginazione e la "virtù estimativa" nel XVI secolo
No full textLEFT-VENTRICULAR OUTFLOW TRACT OBSTRUCTION IN ATRIOVENTRICULAR SEPTAL-DEFECTS - A PATHOLOGICAL AND MORPHOMETRIC EVALUATION
No full textAbstract
Subaortic stenosis has been described with increasing frequency as an ominous feature of atrioventricular septal defect (AVSD), especially following surgical correction of the anomaly in non-Down's syndrome patients. In order to study the surgical anatomy of the left ventricular outflow tract in this malformation, 48 hearts featuring AVSD were examined. Obstructive lesions were classified into unequivocal forms (class A, 13.5%) and potential ones (class B, 10.8%). In the remaining hearts (class C, 75.7%) no obstruction was noted. In class A, subaortic stenosis was due to exaggeration of the anticipated anomalous arrangement of atrioventricular valve tensor apparatus, to the persistence of a subaortic muscular infundibulum, and to a discrete fibrous diaphragm. A potential for subaortic stenosis is provided by the unwedged position of the aortic valve. The left ventricular outflow tract is transformed into a long, forward-displaced fibromuscular channel. Morphometric analysis showed in AVSD (with both common annulus and separate orifices) a significantly (p less than 0.01) lower inflow/outflow tract ratio, and a significantly (p less than 0.01) lower right ventricular/left ventricular outflow length ratio than normal hearts. These results suggest that AVSD is characterized not only, as commonly stated, by inflow tract shortening, but by outflow tract lengthening as well. On these anatomical grounds, nearly all cases of AVSD could harbor the potential for subaortic stenosis; however, this becomes a real hazard (class B) only when associated with forward displacement of the left anterior papillary muscle, or direct insertion on the ventricular septum of the anterior bridging leaflet, and it may be converted to an actual obstruction by the effects of surgery.(ABSTRACT TRUNCATED AT 250 WORDS
