117,871 research outputs found
La malavita del quartiere Ticinese-Tibaldi nel Novecento : dalla malavita alle mafie
No full textIn relazione alla mostra "Milano e la mala" in corso a Palazzo Morando, Luigi Vergallo, a partire dai suoi libri "Muffa della città. Criminalità e polizia a Marsiglia e Milano (1900-1967) [Milieu edizioni, 2016] e "Milano frammenti" (Eclissi, 2017), ha parlato della malavita del quartiere Ticinese-Tibaldi di Milano nel Novecento
Tibaldi "d'intorno" a Perino
No full textl volume riesamina il problema della formazione e dell'attività romana di Pellegrino Tibaldi discutendo i rapporti dell'artista con Perino del Vaga e con Daniele da Volterra nel quadro della Roma farnesiana.
Ragionando sui disegni preparatori, indaga le prassi operative e l'organizzazione della bottega di Perino del Vaga.
Il testo ricostruisce sulla base di materiale grafico una perduta decorazione bolognese di Pellegrino Tibaldi a Palazzo Paselli che permette di rafforzare l'ipotesi di retrodatazione precedentemente proposta dall'autrice per le imprese condotte dal pittore al servizio del cardinale Giovanni Poggi nella stessa città
Optimal dietary lysine levels for growth and protein utilisation of fingerling sea bass (Dicentrarchus labrax L.) fed semipurified diets
No full textDuplicate groups of 60 fingerling sea bass (Dicentrarchus labrax) weighing 0.85 +/- 0.03 g were given five isoproteic and isolipidic semipurified diets (50% N x 6.25 and 14% ether extract on dry matter basis) containing graded levels of lysine and a practical (control) diet for 10 weeks. Fish were kept in twelve 60-1 tanks supplied with 2.51/min of sea water at a temperature of 25.5 +/- 1.2-degrees-C and salinity of 34.6 +/- 1.6 parts per thousand. A basal diet was formulated so that the amino acid content, excluding lysine, simulated that of sea bass muscle protein. The diet contained maize gluten 400 g/kg, herring meal 100 g/kg and gelatin 50 g/kg and mixtures of essential and non-essential pure L-amino acids which accounted for one-third of the total amino nitrogen. The five semipurified diets were obtained by adding 0, 4, 8, 12 and 16 g/kg of L-lysine HCl to the basal diet.
By analysis of the dose-response relationship based on the growth data, the dietary requirement of lysine was found to be 21.7 +/- 0.10 g/kg diet (equivalent to 48.2 g/kg dietary N x 6.25). A similar value was obtained when the gross protein retention was regressed against the dietary lysine levels (22.2 +/- 0.25 g/kg diet). Growth, feed and protein utilisation of fish given the semipurified diets containing adequate levels of lysine were similar to those of fingerlings fed on the practical diet (P > 0.05). The results indicated that sea bass are able to utilise successfully large amounts of alternative protein sources such as maize gluten, providing that adequate levels of lysine and other essential amino acids are present in the diet
Slope deformation, reservoir variation and meteorological data at the Khoko landslide, Enguri hydroelectric basin (Georgia), during 2016–2019
No full textThe Greater Caucasus mountain belt is characterized by deep valleys, steep
slopes and frequent seismic activity, the combination of which results in
major landslide hazard. Along the eastern side of the Enguri water reservoir
lies the active Khoko landslide, whose head scarp zone affects the important
Jvari–Khaishi–Mestia road, one of the few connections with the interior of
the Greater Caucasus. Here, we present a database of measurement time series
taken over a period of 4 years (2016–2019) that enables us to compare slope
deformation with meteorological factors and human-induced perturbations owing
to variations in the water level of the reservoir. The monitoring system we
used is composed of two digital extensometers, placed within two artificial
trenches excavated across the landslide head scarp. The stations are
also equipped with internal and near-ground surface thermometers. The dataset is integrated by daily measurements of rainfall and lake level. The
monitoring system – the first installed in Georgia – was set up in the
framework of a NATO-funded project, aimed at assessing different types of
geohazards affecting the Enguri artificial reservoir and the related
hydroelectrical plant. Our results indicate that the Khoko landslide
displacements appear to be mainly controlled by variations in hydraulic
load, in turn induced by lake level oscillations. Rainfall variations might
also have contributed, though this is not always evident for all the studied
period. The full databases are freely available online at the following DOI:
https://doi.org/10.20366/unimib/unidata/SI384-2.0 (Tibaldi et al., 2020).</p
Effect of the feeding level and fish size on growth and feed efficiency of fingerling sea bass (Dicentrarchus labrax L.)
No full text
A note on the use of plasma urea level to validate the arginine requirement assessed by growth data in sea bass (D. labrax)
No full textResponsiveness of urea synthesis to dietary arginine is believed to be predictable in the European Sea Bass (D. labrax) because of the high level of arginase activity in this species (Corti et al., 1985). In rainbow trout fry, Cho et al., (1992) have used post-prandial serum urea level to confirm the arginine requirement assessed by growth parameters. A similar approach was applied in the present study to fingerling sea bass by measuring plasma urea levels.
The experiment started at the end of a seven week trial carried out to assess the arginine requirement of fingerling sea bass (Tibaldi et al., unp. res.). Fish (12–18 g) were kept in 65 1 flow-through tanks (temperature 25°C and salinity 15 ‰) and fed seven isonitrogenous (47% N × 6.25) isolipidic (12% EE) diets containing graded levels of Arginine (L-ARG). A basal diet (diet 1) was formulated to be limiting in arginine (1% by weight). It contained maize gluten (300 g/kg), fish meal (100 g/kg) and mixtures of essential and dispensable AA to simulate the AA composition of sea bass muscle protein. Diets from 2 to 7 were obtained by adding 3, 6, 9, 12, 15 and 18 g/kg of crystalline L-ARG to the basal diet. Diet 4 was used in a preliminary study in order to determine the time pattern of post-prandial changes in plasma urea levels. Fish were withdrawn for blood sampling 1,3,5,7,9,12 and 24 hr after the morning meal. Peak urea level was found 5 hr post-prandial so that all the blood samples were taken 5 hr after the single meal. Blood was collected by severing the caudal peduncle and plasma was stored under liquid N and analysed for urea content within 24 hr. Three fish were sampled for each time period (preliminary study) and per diet.
The arginine requirement of fingerling sea bass estimated by the dose-growth relationship was found to be 4% of the dietary protein. The 5 hr post-prandial plasma urea level varying with the arginine content of the diet and increased from 0.40 ± 0.04 mM (diet 1, ARG content 2.2% of the protein) to 0.61 ± 0.08 mM (diet 2, ARG 2.9%) without any further change up to diet 4 (ARG 4.2%, plasma urea 0.63 ± 0.04 mM). A sharp increase was noted thereafter (± 180%) by elevating the dietary arginine up to 5.4 % of the protein (diet 6, plasma urea 1.11 ± 0.03 mM). The critical dietary arginine value of 4.2% based on plasma urea level was similar to the dietary requirement estimated by growth rate (4%)
Accidental falls in hospitalized children: an analysis of the vulnerabilities linked to the presence of caregivers.
No full textDietary threonine requirement of juvenile european sea bass (Dicentrarchus labrax)
No full textGroups of 35 European sea bass juveniles, weighing 7.5 ± 0.15 g/fish (mean ± S.D.), were kept in each of 18 flow-through 200-1 tanks supplied with marine water (temperature 21.1°C; salinity 35‰). Triplicate tanks of fish were fed for 65 days six isonitrogenous (48.6% crude protein) and isolipidic (14.1% by ether extract) semipurified diets obtained from a basal mixture formulated to minimize the threonine level (0.76% by weight). The basal diet contained maize gluten (200 g/kg), herring meat (50 g/kg) and gelatin (150 g/kg) and pure L-amino acids to simulate the amino acid profile of sea bass muscle protein, excluding arginine, lysine and tryptophan, the concentrations of which were kept close to previously defined requirement levels. The six diets used to evaluate the threonine requirement were obtained by adding 0.0, 3.5, 7.0, 10.5, 14.0 and 17.5 g L-threonine/kg to the basal diet. Different regression models were used to analyse the dose-weight gain relationship and all models adequately fitted the data (RSQ > 0.92) leading to similar estimates of dietary threonine requirement (1.12-1.26 g/100 g diet; i.e., 2.3-2.6 g/100 g protein). A slightly higher requirement value was obtained when nitrogen gain was chosen as the response criteria (i.e., 1.45 g/100 g diet; 3.0 g/100 g protein). The pattern of post-absorptive plasma-free threonine concentrations of juvenile seabass was in response to threonine intake and was proven to be indicative of dietary requirement (i.e., 1.28 g/100 g diet; 2.7 g/100 g protein). These figures are consistent with the threonine requirement value of 2.6 g/100 g protein calculated by the 'ideal protein' method (e.g., whole-body threonine A/E ratio relative to the dose-response lysine requirement value previously estimated for this species). Apart from reduced growth performance, no depression in feed intake or outward pathological signs were observed in juvenile sea bass fed diets limiting in threonine. Similarly, excessive dietary threonine (up to 190% of the requirement level) had apparently no adverse effect on feed intake and growth response
Large-scale Integrated Academic Portals
No full textThe increasing availability of fixed/wireless network connectivity and the integration of telecommunication systems and the Internet create novel opportunities for users who can benefit from anytime anywhere access to a growing amount of Internet/Intranet Web information. In particular, university communities clearly perceive the potential benefits of widespread availability of Web-based services, which should satisfy heterogeneous requirements from different classes of users, e.g., students, teachers, administrative and technical staffs.
However, university Web sites are typically populated by autonomous institutions (faculties, departments, research groups, ...) that desire to maintain an independent control over data content. Consequently, data from different sites of the same university are usually organized in different ways, by rarely reflecting a common standard for data presentation, representation, and communication; such a plethora of heterogeneous academic/educational information poses novel management and technological challenges. On the one hand, the lack of a centralized entry point for service delivery and information retrieval creates difficulties for users, forced to browse many links before reaching the desired contents. On the other hand, the lack of a standard for data classification and presentation obstacles service/data integration and interoperability.
The academic community of the University of Bologna, the oldest university in the western world, had to face the above technological and management challenges emerging in large scale organizations. In fact, Bologna university community groups many academic and administrative institutions, willing to share common standards of data presentation/communication even though maintaining their autonomy in data management.
These challenges have been faced by designing and implementing an integrated academic/educational Web Portal (UniBo) (The Web Portal, 2005). The UniBo project focuses on two main goals: first, to impose the University of Bologna as a single entry point for transmitting social-cultural knowledge through novel communication channels, such as fixed and wireless networks; second, to organize and customize the heterogeneous data provided by different institutions to easily satisfy the requirements of various user targets (different views for students, teachers, and administrative staff). In the following, we present the peculiar aspects of the UniBo project, by pointing out the motivations of the technological choices made and the crucial challenges of activity reorganization deriving from developing such a large-scale Web Portal. In particular, the contribution underlines the relevance of implementing an integrated technological platform that not only enables common technological, graphic, and usability standards, but also permits the access to shared application services and to university databases about staff, students, teaching activities, and research projects
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