1,846 research outputs found
Caratteristiche nutrizionali e nutraceutiche di cinque accessioni di Avena sativa L. a cariosside vestita e nuda
No full textNegli ultimi decenni si propende a ricercare prodotti con alte caratteristiche nutritive e nutraceutiche. Anche riguardo l’avena, un cereale minore che riveste una certa importanza per l’agricoltura italiana, si assiste a questo fenomeno in virtù del crescente interesse della granella ad uso alimentare. L’avena è un cereale ricco di amido, lipidi e con un buon quantitativo proteico; inoltre possiede vitamine e polifenoli, inoltre è ricca di fibra alimentare ed in particolare di β-glucano, componente nutraceutico con alta bioattività. Considerato ciò sono state analizzate differenti accessioni di avena, di cui alcune utilizzate diffusamente nei sistemi collinari toscani.
La sperimentazione è stata effettuata su cinque accessioni di avena diffusamente presenti nei sistemi collinari toscani. Tre delle cinque accessioni presentano cariossidi vestite (Avena sativa cv. Teo-BD40, Argentina e Donata); due sono caratterizzate da cariosside nuda (Avena sativa varietà nuda cv.Nave e Luna). Le cariossidi vestite sono state preventivamente private delle glumelle per comparare correttamente le caratteristiche nutrizionali e nutraceutiche. I risultati evidenziano e confermano le ottime caratteristiche nutrizionali e nutraceutiche di questo cereale, mostrando altresì una interessante variabilità tra le differenti accessioni nella maggior parte dei parametri analizzati. Alla luce dei risultati ottenuti si confermano migliori le accessioni decorticate, in particolare Teo-BD40 e Argentina, mentre le acccessioni a cariosside nuda, sebbene più versatili per l’alimentazione umana, necessitano ancora di ulteriori studi
Economic Evaluation of Low Environmental Impact from New Sprayers Sistems: An Empirical Evidence from North-East Italy Case Study
No full textImpaired filtering of distracter stimuli by TE neurons following V4 and TEO lesions in macaques
No full textDirecting attention to a behaviorally relevant visual stimulus can overcome the distracting effects of other nearby stimuli. Correspondingly, physiological studies indicate that attention serves to filter distracting stimuli from receptive fields (RFs) in several extrastriate areas. Moreover, a recent study demonstrated that lesions of extrastriate areas V4 and TEO produce impairments in attentional filtering. A critical remaining question concerns why lesions of ventral stream areas cause attentional filtering impairments. To address this question, we tested the effects of restricted area V4 and TEO lesions on both behavioral performance and the responses of downstream neurons in area TE. The lesions impaired behavioral discrimination thresholds and altered neuronal selectivity for target stimuli in the presence of distracters. With attention to the target, but in the absence of V4 and/or TEO inputs, TE neurons responded as though attentional inputs could no longer be used to filter distracters from their RFs. This presumably occurred because top-down attentional signals were no longer able to filter distracters from the RFs of the cells that provide TE with major input. Consistent with this interpretation, increasing the spatial separation between targets and distracters, such that they no longer fell within a typical V4 RF dimension, restored both behavioral performance and neuronal selectivity in the portion of TE RFs affected by the V4 lesion
Progetto postazione e layout dell'ACC di Milano Centrale presso la Sala Circolazione di Milano Greco
No full textLAUREA MAGISTRALEL’elaborato ha lo scopo di progettare la nuova postazione da cui gli operatori della circolazione ferroviaria gestiranno l’impianto di Milano Centrale. Nell’ottica di un accentramento in un’unica cabina di regia, la nuova postazione verrà predisposta presso la Sala Circolazione del Posto Centrale Multistazione di Milano Greco Pirelli, dove attualmente sono già attive venti postazioni da cui si gestisce l’80% del traffico ferroviario della Lombardia.
Suddiviso in tre capitoli, l’elaborato affronta dapprima l’attuale apparato ACEIT, attivo dal 1984, con cui viene gestita la circolazione ferroviaria della stazione di Milano Centrale. L’apparato utilizzato presenta diversi limiti riguardanti principalmente le richieste crescenti delle imprese ferroviarie di nuovi collegamenti, l’affidabilità e la flessibilità di gestione. Si descriverà successivamente il nuovo apparato ACC che sostituirà il vetusto ACEIT e il progetto di potenziamento dell’impianto di Milano Centrale con tutti i vantaggi annessi.
Infine, si tratterà in maniera approfondita e dettagliata la disposizione e il layout delle postazioni in Sala Circolazione e le attività degli operatori che dovranno gestire la circolazione del più importante impianto ferroviario della regione Lombardia.This paper’s aim is to present a new work station from which railway traffic operators will manage the Milano Centrale railway system. In order to gather everything in one control booth, this new work station will be arranged inside the Milano Greco Pirelli’s Sala Circolazione of Posto Centrale Multistazione, where there are already twenty operational work stations from which the 80% of Lombardy’s railway traffic is managed.
The paper is organised in three chapters. Firstly, it will examine the present ACEIT apparatus, which has been active since 1984, and is responsible for the management of Milano Centrale’s railway traffic. The apparatus has several limitations, mainly concerning the growing requests from railway companies for new rail connections, and management reliability and flexibility. Secondly, on one hand the paper will describe the new ACC apparatus that will replace the old ACEIT; on the other hand it will outline the enhancement project of the Milano Centrale facility, and all its advantages.
Finally, the paper will explore thoroughly the layout of the work stations in Sala Circolazione and the tasks of the operators overseeing the most important railway facility in Lombardy
Do subsidized new firms survive longer? Evidence from a counterfactual approach
No full textDo subsidized new firms survive longer? Evidence from a counterfactual approach. Regional Studies. This study provides a
statistically robust evaluation of the impact of capital subsidies on the survival of start-ups in Italy. The analysis considers the
subsidies provided by the main Italian regional policy, Law 488/1992, during 1996–2009. By exploiting an unusual
characteristic of the L. 488 selection process, a quasi-experimental design with high internal validity – the regression
discontinuity design – is applied for the first time to the survival analysis. The results show a lower default risk in
subsidized start-ups. These findings contradict the view that start-ups receiving L. 488 assistance simply used the grant
funding to delay exit
Visual responses to targets and distracters by inferior temporal neurons after lesions of extrastriate areas V4 and TEO
No full textWhile lesions of visual areas V4 and TEO only modestly affect discrimination of isolated objects, they significantly impair the ability to selectively attend to an object surrounded by distracters.To test whether such deficits result from a loss of inputs to higher order areas, we recorded from area TE neurons after removing portions of V4 and TEO in a monkey. Responses to isolated targets in a lesion-affected visual quadrant were substantially preserved, indicating that TE still receives information even after removing a major source of input. Distracters increased or decreased the response to targets more in the lesion-affected than in the normal quadrant, supporting the idea that V4 and/orTEO are sites where top-down attentional inputs filter out distracting stimuli
Ius, nomos, ma'at. L'emersione del diritto nel mondo antico
No full textLa tesi, suddivisa in tre parti, l’una dedicata al diritto romano, la seconda al diritto dei greci, la terza al mondo faraonico, mira ad indagare i rapporti tra il potere regale, da un lato, e la creazione e l’applicazione delle norme, dall’altro, nelle civiltà del più antico mediterraneo. Nella prima parte si analizzano le modalità d’emersione della più risalente branca dell’ordinamento di Roma arcaica, il ius Quiritium, sottolineandosi il ruolo capitale giocato in principio più che dall’elemento consuetudinario, come è opinione comune, dal potere regio, onde includere entro il nuovo sistema gli usi dei più antichi abitanti del septimontium, ossia i quiriti; del ius quiritium in senso oggettivo, poi, si studiano alcuni singoli istituti, quali la detestatio sacrorum, il testamento comiziale, il mancipium paterno. La seconda, partendo dalla protostoria del diritto greco e quindi dagli antecedenti del modello del nomos, prende in esame la dialettica themis-dike, trovando nelle fonti solidi appigli per sostenere che già in Omero l’antitesi riguardava i due poli della oggettività (ordine teo-fisico) e della soggettività (spettanza, azione): di tale nesso, espressione originaria, a medio delle themistes, del potere di anaktes e basileis si cercano le vestigia nella Atene classica, vigente in principio nomos basileus. La terza parte indaga, entro la cornice della originaria indifferenziazione, l’operatività di ma’at, intesa non tanto come una norma fondamentale del sistema faronico o un codice naturale sovraordinato al faraone stesso, quanto una ragion di stato e di cosmo pervasiva della attività tanto di creazione quanto di applicazione del diritto.The work, divided in three parts, the first one dedicated to roman Law, the second one to the law of the Greeks, and the third one to the juridical world of the Pharaohs, aims at studying the relations between regal power and the creation and application of the rules, in the most ancient Mediterranean. At first, the ways of emersion of the earliest branch of Roman law, the so called ius Quiritium, is investigated by underlying the main role played by the kings more than the consuetudinary rules, as regards the inclusions of the uses of the ancient inhabitants of the Septimontium, i.e. the Quirites; some single institutes of ius quiritium are more deeply studied, such as the detestation sacrorum, the testamentum comitiis, the mancipium. The second part focuses on the antecessors of the nomos-sample in the proto-history of Greek Law and considers the link themis-dike as an antithesis, already working in Homers’time, between the objective theo-physic order and the subjective right and action: of such a link, as it appears in the themistes emanated by anaktes and basileis, one looks for its hints in classical Athens, under the regal rule of the nomos. The third part investigates, by considering the original undifferentiating between law and religion, how ma’at worked: it is interpreted not as a Grundnorm or as a natural code binding the pharaoh himself, but as a Kosmos and State reason that operates both in forming and in enacting law
The use of alpha-lipoic acid (ALA), gamma linolenic acid (GLA) and rehabilitation in the treatment of back pain: effect on health-related quality of life.
No full textStability of equilibrium points of projected dynamical systems
No full textWe present a survey of the main results about asymptotic stability, exponential stability and monotone attractors of locally and globally projected dynamical systems, whose stationary points coincide with the solutions of a corresponding variational inequality. In particular, we show that the global monotone attractors of locally projected dynamical systems are characterized by the solutions of a corresponding Minty variational inequality. Finally, we discuss two special cases: when the domain is a polyhedron, the stability analysis for a locally projected dynamical system, at regular solutions to the associated variational inequality, is reduced to one of a standard dynamical system of lower dimension; when the vector field is linear, some global stability results, for locally and globally projected dynamical systems, are proved if the matrix is positive definite (or strictly copositive when the domain is a convex cone)
Inhibition of Biofilm Production and Determination of In Vitro Time-Kill Thymus vulgaris L. Essential Oil (TEO) for the Control of Mastitis in Small Ruminants
No full textStaphylococcus aureus and coagulase-negative staphylococci (CNS) are the main causative agents of mastitis in sheep. Their ability to form biofilms in vivo is considered an important virulence factor underlying mastitis outbreaks refractory to antibiotic treatments. Furthermore, pre- and postdipping immersion during milking in iodine substances could determine the presence of residues in milk and therefore represent a health risk factor for consumers. The aim of this study was to evaluate the antibacterial and biofilm inhibitory activity of Thymus vulgaris L. essential oil (TEO) against staphylococci strains isolated from ovine clinical mastitis. In particular, 3 reference strains (S. aureus 25923 and 11623 and S. epidermidis 12228) and 12 clinical isolates (6 S. aureus and 6 CNS) were used. TEO solutions, from a concentration of 1% (v/v) to 1.25% (v/v), corresponding to 9.28–2.32 mg/mL, were obtained after solubilization in 10% dimethyl sulfoxide (DMSO) and used to evaluate the bacterial time-kill compared to that of an iodine-based solution. Antibacterial efficacy was then assessed by the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC), while biofilm inhibition was assessed by minimum biofilm inhibitory concentration (MBIC) using a spectrophotometer at a wavelength of 570 nm. Additionally, biofilm-associated genes (icaA and icaD) were evaluated in all tested strains by PCR. The tested TEO concentrations were able to significantly and prominently reduce bacterial growth compared to controls, as demonstrated by bacterial time-kills. The MIC value was obtained at a concentration of 0.50% (v/v) for a single coagulation-positive isolate (S. aureus (f)) and at a concentration of 0.25% (v/v) for all other isolates. TEO showed effective bactericidal action with a 99.9% reduction in CFU/mL of all isolates in the MBC test at a concentration of 0.25% (v/v) for most of the tested strains. Furthermore, a marked inhibition in biofilm formation at all tested concentrations was observed, with MBIC value of 0.25%. All S. aureus tested were biofilm-producing strains and positive for icaA and icaD genes, while two CNS biofilm-producing strains were negative for both genes. These preliminary results suggest that TEO could be a promising alternative as an udder disinfectant during milking practices. Although in vivo studies are needed to confirm the efficacy and safety of TEO as an adjuvant in the prevention and treatment of udder infections, TEO could help counteract the emergence of antimicrobial resistance and reduce the potential risk of iodine residues in milk
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