44 research outputs found

    Presentazione

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    Il primo numero della nuova collana Musiche \u2026 da leggere \ue8 dedicato al tema del \u201climite\u201d e del suo \u201csuperamento\u201d, ai \u201ctransiti\u201d oltre la soglia, orientati da operazioni culturali che sono praticate da lungo tempo nella storia dell\u2019umanit\ue0: la traduzione e la trascrizione. Il senso del \u201climite\u201d pu\uf2 essere percepito in un \u201climes\u201d sorvegliato e stabile, quindi inteso o auspicato come invalicabile, oppure in un confine assai fluido e facilmente superabile, nella congruenza dei testi e delle espressioni artistiche, nel campo dei rapporti sociali e politici, nelle relazioni tra lingue, culture e religionidiverse, negli assetti biologici che sono alla base della vita

    Progetto Terra più Sicura: i rischi geologici e la loro prevenzione spiegati agli studenti delle scuole secondarie di primo grado

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    L'associazione Geologia Senza Frontiere onlus (www.gsf.it) è nata nel 2003 dalla volontà di un gruppo di geologi, ambientalisti e naturalisti di dare una prospettiva comune alle competenze conseguite nell'ambito della ricerca universitaria, dell'attività professionale e della cooperazione. Durante l'anno scolastico 2013-2014 Geologia Senza Frontiere ha ideato e realizzato il progetto Terra più Sicura (TpS), volto all'insegnamento dei rischi geologici in scuole secondarie di primo grado di Lazio, Toscana e Veneto. Gli obiettivi del progetto sono stati in particolare l'avvicinamento di studenti ed insegnanti ai problemi della sicurezza del territorio, dei rischi in esso presenti, oltre a come prevenire ed affrontare in maniera consapevole e corretta le emergenze naturali

    Microscopic pathways for stress relaxation in repulsive colloidal glasses

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    Residual stresses are well-known companions of all glassy materials. They affect and, in many cases, even strongly modify important material properties like the mechanical response and the optical transparency. The mechanisms through which stresses affect such properties are, in many cases, still under study, and their full understanding can pave the way to a full exploitation of stress as a primary control parameter. It is, for example, known that stresses promote particle mobility at small length scales, e.g., in colloidal glasses, gels, and metallic glasses, but this connection still remains essentially qualitative. Exploiting a preparation protocol that leads to colloidal glasses with an exceptionally directional built-in stress field, we characterize the stress-induced dynamics and show that it can be visualized as a collection of “flickering,”mobile regions with linear sizes of the order of ≈20 particle diameters (≈2 μm here) that move cooperatively, displaying an overall stationary but locally ballistic dynamics

    Canine placenta histological findings and microvascular density: The histological basis of a negative neonatal outcome?

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    Placenta is essential for the development of the fetus, and its impaired function can lead to a negative outcome (i.e., neonatal mortality). In dogs, investigations on placenta histology and neonatal outcome in healthy bitches are lacking, and a contribution is provided in this study to emphasize the use of placenta histology in practice. Fifty-one placentas from 11 litters were collected during cesarean section, classified according to the litter size (large (L) or small (S)) and the outcome, this latter as healthy (Group 1) or dead within 7 days (Group 2). The placenta/puppy weight ratio (PPR) was calculated, and specimens were formalin-fixed and paraffin-wax embedded, and on the resulting histological slides, capillary density (CD) was quantified. Among necrosis, calcification, and intravascular leucocytes, only the presence of multifocal-confluent necrosis (significantly more frequent in Group 2) was associated with a higher risk of death within 7 days (odds ratio = 30.7). Mixed logistic regression ruled out the effect on death both of a bitch and cesarean type (programmed vs. emergency). PPR and CD values were associated with litter size; large litters had lower PPR (p < 0.01) and higher CD (p < 0.05) than small litters. The relationship between PPR and CD was negative and significant (p < 0.01). Necrosis was a frequent finding in canine placentas, but only when multifocal-confluent was it associated with a poor outcome. The litter size influenced PPR (lower in L) and CD (higher in L), and this is likely due to the plasticity of placenta adaptation

    Musica oggi

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    Rivista dell'Associazione "Musica Oggi" (Milano). Specializzata in tematiche afferenti al jazz e alla sua cultura

    Per Archi

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    \uc8 l'unica rivista musicologica dedicata agli strumenti ad arco e alle loro culture
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