171,531 research outputs found
F. B. Cicala traduttore di Orazio (1814) tra Napoleonidi e Restaurazione
No full textFor F. B. Cicala (1765-1815) Orazio’s translation from Latin into ‘Tuscan’ was a literary challenge and a historically realizable dream. He wanted to fight hand to hand with the Latin poet. Suggestive images, the symbols of youth and death, mythological references, the variety of metrics according to form and content illuminate his soul and the reader’s one. In this way Orazio’s translation becomes a lesson of melancholic and virile waiting, but with this trial Cicala is conscious of the final loss in the transformation of art. Sense of crisis and powers of poetic truth are all interlinked between history, invention and literary tradition
Prefazione
No full textIl contributo è una presentazione del volume scritto dal sacerdote Don Carlo Cicala. Il libro combina il carattere marcatamente autobiografico, l’esperienza di impegno sociale di un prete di periferia con l’indicazione progettuale di profondo rinnovamento della quale si fa portatore nei confronti della sua Chiesa
CURRENT HARMONICS GENERATED BY LAMPS: A COMPARISON IN DIFFERENT CONDITIONS OF SUPPLY VOLTAGE
No full textSignaling Pathways in Inflammation and Its Resolution: New Insights and Therapeutic Challenges
No full text: Tissue inflammation is a dynamic process that develops step by step, in response to an injury, to preserve tissue integrity [...]
Inflammation-coagulation network: are serine protease receptors the knot?
No full textFollowing an injury, the body recruits a mechanism to delimit and repair tissue damage; this phenomenon is known as inflammation. Among the several different pathways that are activated during this process, which is necessary for survival, activation of the coagulation pathway is a key feature. In fact, clinical changes in blood fluidity have been closely related to ongoing inflammation. Recent evidence suggests that serine protease receptors might play a major role in the host defence mechanism at the interface between coagulation and inflammation
Indomethacin and thromboxane A2/prostaglandin H2 antagonist SQ29,548 impair in vitro contractions of aortic rings of ex vivo-treated lipopolysaccharide rats.
No full textLipopolysaccharide treated rats (25 mg/kg i.v.) were killed after 60 min and rat aortic rings were mounted in an isolated organ bath for measurement of isometric contractions in response to phenylephrine (0.01-10 microM) or potassium chloride (10 mM). Aortic rings from lipopolysaccharide-treated rats showed reduced contractility to phenylephrine and potassium chloride when compared to those from saline-treated rats. Indomethacin 10 microM, added in vitro further impaired phenylephrine-induced contraction of aortic rings from lipopolysaccharide ex vivo treated rats but was ineffective on aortic rings from saline treated rats. A similar pattern was observed when potassium chloride was used. Administration in vitro of thromboxane A2 receptor antagonist SQ29,548 gave a similar effect to indomethacin. Aortic rings collected from rat treated in vivo with dexamethasone (10 mg/kg) showed a reduction in phenylephrine induced contractions that was not further reduced by in vitro treatment with indomethacin (10 microM). Similarly, when rat aortic rings were incubated in vitro (60 min) with lipopolysaccharide (0.4 mg/ml) a reduction of phenylephrine- and potassium chloride-induced contraction was observed, but addition of either indomethacin or SQ29,548 did not further reduce contraction. Our results suggest that under these experimental conditions, in the early phase of endotoxin shock, synthesis of cyclooxygenase products (such as endoperoxides or thromboxane A2) occurs probably as a compensatory mechanism to lipopolysaccharide induced hypocontractility from the interaction, in vivo, between lipopolysaccharide, endothelium, circulating cells and vascular smooth muscles
The Impact of Fused Filament Fabrication (FFF) Printing Profiles on 17-4 PH Green and Sintered Parts
No full textThe aim of this research is to characterize parts from innovative hybrid printing method for obtaining dense metal components using affordable fused filament fabrication (FFF). The introduction of Desktop Metal technology in 2015 really attracts an increase in industrial interest in the FFF printing of highly metal-filled filament. Even though FFF is a well-known process, there are not many studies on how to optimize the printing parameters for these feedstocks. The effects of the printing setting on producing high-quality green parts and enhancing the mechanical properties of the finished 17-4 PH metallic parts are investigated in this work. The influence of four printing profiles provided by a BASF plugin for Ultimaker Cura slicing software, obtained by combining different printing parameters is investigated. The ASTM E8 tensile test is used to determine the mechanical characteristics of the finished metal components. To identify differences in morphology, optical and scanning electron microscopy (SEM) observations are made on both sections of green and sintered samples. The effect of printing parameters on shrinkage and density are also taken into consideration. The findings demonstrate the importance of optimizing the printing of the green parts in order to produce full metal components that are both strong and dense
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