86,923 research outputs found
Infezione da Saprolegniaceae in gamberi di fiume, Austropotamobius pallipes complex, in un allevamento sperimentale del nord Italia
No full textIn una troticoltura sperimentale in provincia di Belluno, nel periodo compreso tra autunno 2004 e autunno 2005, è stata condotta una prova sperimentale di allevamento intensivo di Austropotamobius pallipes complex. Nell’ottobre del 2004 sono stati pescati 32 gamberi (15 maschi e 17 femmine) nella roggia tributaria
dell’allevamento. Gli animali sono stati stabulati prima in una vasca di cemento, poi in una di vetroresina. In aprile le femmine con uova (11 individui), sono state spostate in una vasca californiana. Nel giugno 2005, si è verificata una moria totale dei gamberi nella vasca in vetroresina, che presentava problemi igienici per la
permanenza di materiale in decomposizione. In agosto le femmine rimanenti, alla schiusa delle uova, sono state spostate in una vasca simile a quella in cui si è verificata la mortalità. complessivamente 23 gamberi sono stati sottoposti ad indagini sanitarie: 19 ad esame microscopico a fresco, micologico, batteriologico e tutti all’esame istopatologico. All’esame micologico sono state isolate Saprolegniaceae da branchie, arti e addome di tutti i campioni, e Fusarium sp. in un solo esemplare. All’esame istologico si osservava un’abbondante presenza di ife fungine ramificate nelle branchie, nello spessore dei gonopodi, nella porzione ventrale del carapace addominale molle (sternum) e nelle giunzioni delle articolazioni, con gravi lesioni all’ipoderma, reazioni flogistiche e necrosi. La muscolatura e la ghiandola verde talvolta risultavano colonizzate. In alcuni casi le ife si presentavano
incapsulate da melanina. La mortalità è stata attribuita ad nfezione da Saprolegniaceae, sviluppatesi in maniera abnorme a causa della mancata rimozione dei residui di alimento
Data on protein abundance alteration induced by chronic exercise in mdx mice model of Duchenne muscular dystrophy and potential modulation by apocynin and taurine
No full textHere we present original data related to the research paper entitled "Proteome analysis in dystrophic mdx mouse muscle reveals a drastic alteration of Key Metabolic and Contractile Proteins after chronic exercise and the potential modulation by anti-oxidant compounds" (Gamberi et al., 2018) [1]. The dystrophin-deficient mdx mouse is the most common animal model for Duchenne muscular dystrophy. The mdx mice phenotype of the disorder is milder than in human sufferers and it can be worsened by chronic treadmill exercise. Apocynin and taurine are two antioxidant compounds proved to be beneficial on some pathology related parameters (Schroder and Schoser, 2009) [2]. This article reports the detailed proteomic data on protein abundance alterations, in tibialis anterior muscle of mdx mice, induced by chronic exercise protocol. A selected group of mdx mice was also treated with apocynin and taurine during this protocol. Detailed MS data, comparison between mdx vs wild type, exercised mdx vs wild type, and complete analysis of spot variation are provided. Furthermore, in wild type mice subjected to the same exercise protocol, the abundance of key proteins, resulted modified in exercised mdx, were analyzed by western blot. (C) 2018 The Authors. Published by Elsevier Inc
Magma Plumbing System at a Young Back-Arc Spreading Center: The Marsili Volcano, Southern Tyrrhenian Sea
No full textAlthough spreading rate is commonly taken as a proxy for decompression mantle melting at
mid-ocean ridges (MORs), magmatism at back-arc spreading centers (BASCs) is further influenced by the
subduction-related flux melting of the mantle. These regions consequently show a diversity of crustal structures,
lava compositions, and morphologies not typically found in MORs. Here we investigate the crustal
plumbing system of the small-scale, Marsili back-arc spreading center of the Southern Tyrrhenian Sea using
plagioclase data from a wide spectrum of lavas (basalts to andesites) dredged from its summit and flanks.
We employ petrological modeling to identify the plagioclase populations carried in the individual lavas, allocate
them to plausible magmatic components present within the plumbing system, and trace the processes
occurring during magma ascent to the surface. The properties of the system, such as mush porosity and
abundance of the melt bodies, vary from one magma extraction zone to another along the BASC, evidencing
the local variability of melt supply conditions. The plagioclase crystals document a range of relationships
with the host lavas, indicating magma extraction from a composite, vertically extensive mush and melt-lens
system resembling that of MORs. At the same time, however, in small BASCs, such as in the case of the Marsili
Basin, crustal accretion and resulting morphology are significantly influenced by the three-dimensional
setting of the basin margins. This is an important deviation from the conventional model based on the linear
continuity and essentially two-dimensional framework of MORs
Slope fans and aprons dominated by supercritical bedforms: topographic and feeding system controls (Southeastern Tyrrhenian Sea)
No full textIn the marine environment, turbidite supercritical bedforms have been widely reported from channel-axis and overbank wedges. On the contrary, their dominance in the make-up of fans and apron, apart from local areas such as channel mouths, is at present not recognized. However, since it has been postulated that turbidity currents reach the supercritical conditions for slope > 0.5°, submarine slopes should contain abundant supercritical flow deposits. Here, we provide a review of different types of slope fans and aprons dominated by supercritical bedforms, based on examples from the modern seafloor. We compare depositional elements located in different intraslope basins of the Tyrrhenian Sea, through high-resolution bathymetry, chirp subbottom section and, where available cores. The variable geological context results in axial and transvers slope fans with highly variable sizes (few to tens of kilometres) and geometries, dependent upon the erosive and/or depositional processes involved, as well as the seafloor topography of the area. In particular, we have recognized two types of lobe-shaped deposits characterized by supercritical bedforms: channel-attached fans and detached aprons. The first ones are connected to a canyon-channel system and develop on slope gradients of 0.5° to 1.2°, display small-scale bedforms (wavelength of about 150 m and height < 10 m), with upslope asymmetric or symmetric cross-sections, interpreted as cyclic steps and antidunes. According to the amplitude of the reflections, cores, and to the bedform aspect ratio, the channel-attached fans are interpreted to be composed of coarse-grained sediments. Our examples highlight that cyclic steps and antidunes dominate the channel-attached fans both in axial and lateral portion while scours mark topographic changes such as breaks in slope or laterally confined areas. Detached aprons develop from the un-incised shelf edge on steep slopes of about 1.2° to 3° and are composed by large-scale bedforms (wavelength of about 500 m and height of about 5 m) mainly upslope asymmetric, associated with cyclic steps. The low amplitude of the seismic reflections suggests the fine-grained nature of the aprons. This study shows that there are significant differences in the distribution and character of supercritical bedforms in slope settings according to the type of feeding system, the degree of flow confinement and the seafloor topography. The analysis of the downslope evolution of turbidity currents, and of the character of associated bedforms in deep-water systems can contribute new perspectives to refine our models of deep-sea depositions
Reti logistico-distributive. Una piattaforma software integrata
No full textLa configurazione e l’organizzazione
di un network logistico-distributivo in
complesse realtà industriali impattano
s igni f icat i vamente sul l i vel lo di
competitività e sul conseguimento di
una posizione di vantaggio competitivo e
sostenibile con cui dette imprese operano
nel mercato globale. In questo contesto la
progettazione e la pianificazione strategica
della rete logistica, la configurazione
tattica della stessa, e la gestione e il
controllo operativi dei processi e dei
servizi, dal confezionamento e stivaggio
della merce a magazzino al carico dei
mezzi di trasporto e al loro instradamento
lungo la rete di traffico stradale e/o al
L’Università di Bologna ha completato una piattaforma
software di supporto all a progettazione, gestione e
ottimizzazione integrata dell a supply chain.
Distribuzione
Riccardo Manzini, Marco Bortolini, Emilio Ferrari, Mauro Gamberi
Dipartimento di Ingegneria delle Costruzioni Meccaniche, Nucleari, Aeronautiche
e di Metallurgia, Università di Bologna
44
ricorso di alternative modalità di trasporto
(rotaia, aereo, mare, fluviale, ...),
assumono un’importanza cruciale per il
successo di un’impresa.
A questo scopo il dipartimento di
Ingegneria delle Costruzioni Meccaniche,
Nucleari, Aeronautiche e di Metallurgia
dell’Università di Bologna, ha completato
lo sviluppo della piattaforma software
LD - LogOptimizer. Si tratta di un set di
strumenti di supporto alla progettazione,
ottimizzazione e gestione integrata di
una rete logistica distributiva multilivello,
in presenza cioè di più impianti
produttivi, centri di stivaggio e distributivi
delocalizzati, grossisti, dettaglianti e
clienti. Questa piattaforma è il risultato
della lunga esperienza condotta dai
ricercatori e professori dell’Università di
Bologna e dello sviluppo di un framework
logico e concettuale di riferimento basato
su un approccio sistemico, testato più
volte sul campo, dal settore alimentare
alla ceramica passando attraverso la
produzione di macchine automatiche e la
gestione dei ricambi, mediante il ricorso a
strumenti di mixed integer programming,
cluster analysis, algoritmi euristici, tools
di georeferenziazione, etc
Digital and Poshuman Narratives in Literature
No full textThis chapter aims at exploring how narratives for children and their transmedia adaptations can be a crucial part in the production of meaning of our time. By investigating the
Western notion of childhood not as a neutral status, but one which is an idealised trope in which is embedded our sense of posterity and which embodies aspects of political nature that have profound educational and ethical implications, children’s narratives can thus be
interpreted as one of the privilege sites from where to disclose and critically rethink what
can be counted as human and the role of the humanities. In particular, this chapter asks
how transmedia children’s narratives are able to protect, promote and transmit European texts as global heritage, and how they are able to reshape cultural memory and ethical principles by fostering children’s and youths’ education. The analysis addresses these issues
by exploring The Diary of Anne Frank (1947) as an exemplary case of children’s literature
that has generated a great variety of transmedia narratives and highlights how its complex
and multi-layered status in our global culture can contribute to pursue an understanding of
our cultural orientations towards the future and towards a new ethical territory where the humanities converge with digital technologies and the politics of the form
Downslope evolution of supercritical bedforms in a confined deep-sea fan lobe, Amantea Fan, Paola Basin (Southeastern Tyrrhenian Sea)
No full textThe sedimentology of upper flow regime bedforms represents an important research topic at the present. Deposits interpreted as those of supercritical flows are widely recognized in modern fan systems, but their recovery is challenging. Most of the sedimentological information has come from channel thalwegs but supercritical bedforms are also frequently downslope from the channel mouths. Such an environment has been identified in the Paola basin, where erosive and depositional cyclic steps have been imaged and identified in a sandy submarine lobe of the Amantea Fan. High-resolution sub-bottom profiles provide insight into the bedform internal architecture and their relationships with a frontally-confining ridge. For the first time, supercritical bedforms in a submarine lobe have been interpreted in two distinct positions: in the scour of an erosional cyclic step and in the stoss side of a depositional cyclic step. Coarse to medium-grained massive sand with flame structures, indicating rapid sediment fall-out and frequently associated with the occurrence of hydraulic jumps, has been identified in the scour and at the toe of the ridge. The latter represents an example of topographically induced hydraulic jumps driven by a frontal confinement. Top-cut-out medium to fine sands with tractive structures have been interpreted as the deposits related to the stoss side of a cyclic step or small-scale antidune superimposed on the cyclic step surface. The presented data broaden the understanding of the range of processes that are driven by the interaction between turbidity currents and seafloor topography and the dip of the slope. The recognition that topography influences the density structure and the degree of criticality of the flow and, consequently, the morphodynamics and facies of the relative deposits may help to explain sediment distribution and improve depositional models of fan lobes in confined settings
Downslope evolution of supercritical bedforms in a confined deep-sea fan lobe, Amantea Fan, Paola Basin (Southeastern Tyrrhenian Sea)
No full textThe sedimentology of upper flow regime bedforms represents an important research topic at the present. Deposits interpreted as those of supercritical flows are widely recognized in modern fan systems, but their recovery is challenging. Most of the sedimentological information has come from channel thalwegs but supercritical bedforms are also frequently downslope from the channel mouths. Such an environment has been identified in the Paola basin, where erosive and depositional cyclic steps have been imaged and identified in a sandy submarine lobe of the Amantea Fan. High-resolution sub-bottom profiles provide insight into the bedform internal architecture and their relationships with a frontally-confining ridge. For the first time, supercritical bedforms in a submarine lobe have been interpreted in two distinct positions: in the scour of an erosional cyclic step and in the stoss side of a depositional cyclic step. Coarse to medium-grained massive sand with flame structures, indicating rapid sediment fall-out and frequently associated with the occurrence of hydraulic jumps, has been identified in the scour and at the toe of the ridge. The latter represents an example of topographically induced hydraulic jumps driven by a frontal confinement. Top-cut-out medium to fine sands with tractive structures have been interpreted as the deposits related to the stoss side of a cyclic step or small-scale antidune superimposed on the cyclic step surface. The presented data broaden the understanding of the range of processes that are driven by the interaction between turbidity currents and seafloor topography and the dip of the slope. The recognition that topography influences the density structure and the degree of criticality of the flow and, consequently, the morphodynamics and facies of the relative deposits may help to explain sediment distribution and improve depositional models of fan lobes in confined settings
The University and The City
No full textThis chapter aims at investigating how the humanities can contribute to understanding the city from the specific angle of its relation to the university, here understood as a mate
rial and immaterial site of knowledge and values production. Contemporary processes of urbanisation represent a complex phenomenon which is affecting all parts of the world, is
accelerating the effects of globalisation and is deeply reshaping, among other things, the
role played by the university as one of the historically privileged places where the humanities have been formulated, transmitted, defended and critically (re)thought within the contemporary world. The ‘becoming urban of the planet’ undoubtedly constitutes new challenges but also opportunities for rethinking the production, transmission and circula
tion of knowledge, and it is therefore of crucial importance to understand this process of transformation in the light of the new humanities
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