117,916 research outputs found
Tra Noi e l'Altro: Le rappresentazioni sociali dello straniero
No full textIl saggio descrive e analizza i processi socio-psicologici e culturali alla base degli atteggiamenti nei confronti degli immigrati. Questi ultimi considerati come l’“altro” per eccellenza, soggetto attraverso il quale in determinati momenti storici ci si serve per definire e solidificare i tratti della propria identità collettiva, oltre che precisare alcune caratteristiche della propria cultura di appartenenza. Il codice culturale Noi/Altro che permea le rappresentazioni sociali - così come è emerso attraverso l’analisi delle principali ricerche italiane sull’argomento ‒ permette di stabilire un punto di collegamento fra processi cognitivi (gli stereotipi e pregiudizi) e processi sociopsicologici (le rappresentazioni sociali e culturali) alla base dell’atteggiamento razzista. In particolare le rappresentazioni sociali si rivelerebbero fondamentali nell’orientare il nostro sguardo sull’altro, nel favorire o ostacolare sul piano identitario il suo riconoscimento, nello stabilire con lui forme di rifiuto e di distanza, o al contrario forme di solidarietà e vicinanza
A NAD(P)H oxidase isolated from the archaeon Sulfolobus solfataricus is not homologous with another NADH oxidase present in the same microorganism
No full textA NAD(P)H oxidase has been isolated from the ar- chaeon Sulfolobus solfataricus. The enzyme is a ho- modimer with Mr 38,000 per subunit (SsNOX38) contain- ing 1 FAD molecule/subunit. It oxidizes NADH and, less efficiently, NADPH with the formation of hydrogen per- oxide. The enzyme was resistant against chemical and physical denaturating agents. The temperature for its half-denaturation was 93 and 75 °C in the absence or presence, respectively, of 8 M urea. The enzyme did not show any reductase activity. The SsNOX38 encoding gene was cloned and sequenced. It accounted for a prod- uct of 36.5 kDa. The translated amino acid sequence was made of 332 residues containing two putative -fold regions, typical of NAD- and FAD-binding proteins. The primary structure of SsNOX38 did not show any homol- ogy with the N-terminal amino acid sequence of a NADH oxidase previously isolated from S. solfataricus (Ss- NOX35) (Masullo, M., Raimo, G., Dello Russo, A., Boc- chini, V. and Bannister, J. V. (1996) Biotechnol. Appl. Biochem. 23, 47–54). Conversely, it showed 40% sequence identity with a putative thioredoxin reductase from Ba- cillus subtilis, but it did not contain cysteines, which are essential for the activity of the reductase
Valine 114 Replacements in Archaeal Elongation Factor 1A Enhanced Its Ability To Interact with Aminoacyl-tRNA and Kirromycin
No full textValine 114 in the D109AAILVVA sequence of elongation factor 1R from the archaeon Sulfolobus solfataricus (SsEF-1R) was substituted with an acidic (V114E), basic (V114K), or cavity-forming (V114A) residue, and the effects on the biochemical properties of the factor were investigated. This sequence is well-conserved among most of eukaryal and eubacterial counterparts, and in the three-dimensional structure of SsEF-1R, V114 is located in a hydrophobic pocket near the first GDP-binding consensus sequence G13XXXXGK[T,S] [Vitagliano, L., Masullo, M., Sica, F., Zagari, A., and Bocchini, V. (2001) EMBO J. 20, 5305-5311]. These mutants displayed functions absent in the wild-type factor. In fact, although they exhibited a rate in poly(Phe) incorporation almost identical to that of SsEF-1R, V114K and V114A exhibited an affinity for GDP and GTP higher and a capability to bind heterologous aa-tRNA stronger than that elicited by SsEF-1R but similar to that of eubacterial EF-Tu. V114E instead displayed not only a weaker binding capability for aa-tRNA but also a lower affinity for GDP. The intrinsic GTPase activity of V114E was drastically reduced compared to those of SsEF-1R, V114K, and V114A. Interestingly, the decreased intrinsic GTPase activity of V114E was partially restored by kirromycin, an effect already observed for the G13A mutant of SsEF-1R [Masullo, M., Cantiello, P., de Paola, B., Catanzano, F., Arcari, P., and Bocchini, V. (2002) Biochemistry 41, 628-633]. Finally, the V114A substitution showed only a marginal effect on both the thermostability and thermophilicity of SsEF-1R, whereas V114K and V114E replacements strongly destabilized the molecule
Riflessioni sull'autorialità: il caso del poeta Ibn Zurayq al-Baghdadi
No full textSeveral sources from XI to XVI cent. report a fine ‘ayniyya, giving versions of it
which differ in length, varying from two to over forty verses. At first this poem
had various attributions, or had no given author at all. It was later attributed to
Abū l-Ḥasan ‘Alī ibn Zurayq al Baġdādī, a XI cent. poet from Iraq, who apparently
only wrote this qaṣīda and had a troubled life with a tragic end. The little
information available about him is inferable from the poem itself and the related
story conveyed by some of the compilers.
This paper aims to reconstruct the path of the attribution of the authorship of
the ‘ayniyya. The analysis is based on the four authorial functions given by Michel
Foucault and aims at balancing actual information and the legend. The main
categories of the theory of cooperative reading by Eco are also used, in order to
distinguish authorial, textual and critical intentions
Oltre il rinvio quoad poenam: un’interpretazione che ricompone le disarmonie di tutela tra coniuge separato e coniuge divorziato?
No full textLe Sezioni Unite, nella sentenza in commento, hanno stabilito che il rinvio quoad poenam all’art. 570 c.p. contenuto all’art. 12 sexies della l. n. 898 del 1970 si riferisce al primo comma della disposizione codicistica e, dunque, alle pene alternative della reclusione e della multa. La decisione ribalta il più recente e consoli- dato orientamento della giurisprudenza di legittimità che - sulla base di una presunta affinità strutturale del modello di incriminazione dell’art. 12 sexies con l’omessa prestazione dei mezzi di sussistenza di cui all’art. 570, comma 2, c.p. - aveva invece interpretato il rinvio come riferito a quest’ultima disposizione e conse- guentemente alla pena congiunta della reclusione e della multa. La pronuncia è di notevole interesse non soltanto per l’originalità della soluzione accolta, ma soprattutto per i riflessi applicativi che è destinata a ri- verberare in ordine all’interpretazione della fattispecie “richiamata” di violazione degli obblighi di assistenza di cui al primo comma dell’art. 570 c.p., destinata ad ampliare il suo raggio di azione, secondo la lettura of- ferta dalle Sezioni Unite, anche all’omessa corresponsione dell’assegno di mantenimento al coniuge sepa- rato, fino ad oggi relegata nelle maglie repressive dell’ipotesi di cui al secondo comma, laddove tale ina- dempimento si fosse tradotto nel far mancare i mezzi di sussistenza
A NAD(P)H oxidase isolated from the archaeon Sulfolobus solfataricus is not homologous with another NADH oxidase present in the same microorganism
No full textNew methodologies for the noise annoyance assessment of urban projects
No full textThis paper presents the work of SONORUS-ESR6 project: New methodologies for the noise annoyance assessment of urban projects. The project aims to develop new ecological assessment of sound environment that takes into account the multisensory and interdependent nature of human perception through the application of immersive virtual reality (IVR), and that involves both samples of the population and the public administration during the design process of urban projects. The first part of the work, based on new case studies and existing literature, argued and developed theories to support the use of IVR for environmental evaluation. Particularly, correlations between several sense stimuli (audio, visual, olfactory) were investigated, and the validity of IVR as a surrogate of real environment for evaluations was examined. Secondly, hardware and software used to prepare and set up a demonstrator IVR tool were tested. The tool comes in two versions: online and offline. Both versions allow real-time rendering of 3D audio-visual content. Finally, the IVR tool was applied with simulated scenarios, based on proposed actions on case sites, to demonstrate and test its use for noise evaluation of urban projects. The potentialities of the tool and the advantage and disadvantage of the two versions were discussed
Seripa D, Matera MG, Daniele A, Bizzarro A, Rinaldi M, Gravina C, Bisceglia L, Corbo RM, Panza F, Solfrizzi V, Fazio VM, Dal Forno G, Masullo C, Dallapiccola B, Pilotto A. The mssing ApoE allele. Annals of Human Genetics. published online 22 January 2007; doi: 10.111/j.1469-1809.2006.00344x. IF=3.19
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