6,853 research outputs found
La presenza naturale ed antropica di metalli e metalloidi nei terreni e nelle acque della successione umbro-marchigiana. Studio ecologico della Bassa Vallesina
No full textThis PhD thesis concerns an ecological study aimed at identifying the natural and anthropogenic presence of the main metals / metalloids in the environment, together with an assessment of the risk related to their presence in environmental receptors. All these aspects, also in relation to the limit values set by the national and community regulations in force, have been contextualised in an ecological study of the Low Esino Valley (Marche, Italy).
The research carried out shows a substantial concordance between the literature data and the natural background values for the soil and groundwater environmental matrixes, determined in an area adjacent to the study area with similar geological peculiarities. Concentrations exceeding the national regulatory limit values, were mainly found in groundwater (species for Fe, Mn, Pb and in the alternative Al, Zn and As) and inorganic salts (Chlorides, Sulphates). These geochemical anomalies are found in correspondence and/or proximity of certain geological formations (clays, evaporitic rocks), in intensely tectonized zones or in areas close to overhangs and in ephemeral aquifers characterized by low oxygenation and high content of organic matter.
The Low Esino Valley, choice both for geological contiguity with the areas used for the study of the natural background, and for the extensive anthropization, has been the subject of a census of anthropic activities of potential contribution of metals through one of the indicators proposed by the European Environmental Agency (EEA).
The processing of ERA (Ecological Risk Assessments) in the investigated area has shown a potential risk of minimal adverse effects in the environment, prevalently for aquatic organisms by As, Total Cr, Hg, Ni, Pb, Cu, Se and V. In a compromised environmental scenario, concomitant presence of metals and anthropogenic compounds (Hydrocarbons, Halogenated Solvents and Nitrates), the conduction of the ERA reveals instead potential adverse effects not only for the aquatic communities, but also for small birds and fish.
The data, acquired through the various survey steps, lay the foundations for an environmental characterization of the study area, to define both the operational priority criteria aimed at environmental rehabilitation, and the precautionary limit values for sensitive environmental targets, this last defined at a site-specific scale
Leveraging BIM and Mixed Reality to Actualize Lean Construction
No full textLean construction is made of principles, measures and methods that aim at maximizing process efficiency. Several tools have been developed to minimize waste, maximize customer value, improve the conduction of processes, and pursue other sub-objectives in construction. This effort is becoming more and more important due to the rising construction project size and variety, displacement of resources in diverse geographic locations, high-performance pressure. This paper reports the development and on-site tests in a real-life demonstrator of two management tools, which apply some principles of lean construction management at the design and delivery phases. The first one takes advantage of the integration between BIM and mixed reality, having the final aim of improving collaboration and communication among the actors involved. The second one exploits BIM modelling and search algorithms within a process-based management platform, in order to facilitate short-cycle planning and distributed decision-making in the production process. Both tools have been tested in the case of a building renovation project. The results show that they can improve communication efficiency, reduce rework, speed up work monitoring, control and supervising in construction management, and that they can address several of Liker’s lean principles, as classified by the 4P model
[Poesia] Três poemas de Alberto Secama
No full textThree poems by Alberto Secama. About the author: Alberto Secama is an Angolan poet who has poems published on many websites and on facebook:https://www.facebook.com/Xungurra/abouthttp://www.pordentrodaafrica.com/cultura/africa-em-verso-rio-kwanza-por-alberto-secamahttp://www.pordentrodaafrica.com/cultura/africa-em-verso-zong-por-alberto-secamahttp://www.pordentrodaafrica.com/cultura/coluna-africa-em-verso-o-sol-la-fora-por-alberto-secamaTres poemas de Alberto Secama. Sobre el autor: Alberto Secama es un poeta angoleño que tiene poemas publicados en varios sitios y en el facebook:https://www.facebook.com/Xungurra/abouthttp://www.pordentrodaafrica.com/cultura/africa-em-verso-rio-kwanza-por-alberto-secamahttp://www.pordentrodaafrica.com/cultura/africa-em-verso-zong-por-alberto-secamahttp://www.pordentrodaafrica.com/cultura/coluna-africa-em-verso-o-sol-la-fora-por-alberto-secamaTrês poemas de Alberto Secama. Sobre o autor: Alberto Secama é um poeta angolano que possui poemas publicados em vários sites e no facebook:https://www.facebook.com/Xungurra/abouthttp://www.pordentrodaafrica.com/cultura/africa-em-verso-rio-kwanza-por-alberto-secamahttp://www.pordentrodaafrica.com/cultura/africa-em-verso-zong-por-alberto-secamahttp://www.pordentrodaafrica.com/cultura/coluna-africa-em-verso-o-sol-la-fora-por-alberto-secam
Corrigendum to “Fatal inhalation of nitrogen inside a closed environment: toxicological issues about the cause of death” [Forensic Sci. Int. 302C (2019) 109871] (Forensic Science International (2019) 302, (S0379073819302865), (10.1016/j.forsciint.2019.06.029))
No full textThe authors regret that Dr. Alberto Amadasi and Dr. Alessio Battistini have been missed from the author list. The author list should have been as: Alfredo Fabrizio Lo Faroa, Alessio Battistinic, Filippo Pirania, Alberto Amadasic, Antonino Paratoreb, Adriano Tagliabraccia, Francesco Paolo Busardòa aSection of Legal Medicine, Università Politecnica delle Marche, Ancona, Italy biCTLab s.r.l. Spin-off of University of Catania, Catania, Italy cSezione di Medicina Legale e delle Assicurazioni – Dipartimento di Scienze Biomediche per la Salute – Università degli Studi di Milano The authors would like to apologise for any inconvenience caused
Consumer perception of different species and presentation forms of fish: An empirical analysis in Italy
No full textFish consumption analysis involves public and commercial interests. Many studies have focused on this issue over the last few decades. Researchers rarely consider the heterogeneity of these products, while we believe there are at least five reasons why it should always be taken into account: (i) health factors; (ii) environmental drawbacks regarding the consumption of particular species; (iii) the importance of species and how the fish are presented to consumers; (iv) the perceived differences between species are of prime importance for marketing strategies; and finally (v) being able to identify different species helps prevent fraud. Through perceptual mapping we studied the perceived differences between European anchovies (Engraulis encrasicholus), European sardines (Sardina pilchardus) and mackerel (Sgomber spp.), wild-caught cod and sole, and farmed sea bream and sea bass. We checked for the influence of gender, age, education and residence in how consumers perceive seafood. We found that the gender, age and education of consumers do not usually affect their perception of blue fish as being cheap, flavorsome and traditional, cod and sole as nutritional, and farmed sea bream and bass as natural. A slight difference was found in central/southern Italian residents, who perceive farmed sea bream and bass as cheap and flavorful. The results validate the idea that consumers recognize the different attributes of each species or type of fish for sale, but some issues remain unresolved and further studies are recommended
Orizzonti mantovani. Spunti e dinamiche paesaggistiche ne L'Illustrissimo di Alberto Cantoni
No full textIn the literary production of Alberto Cantoni, short story writer and novelist between the nineteenth and twentieth centuries, the novel L'Illustrissimo is highly important both because it is the last publication of the author, from Pomponesco, a small town a few kilometers south of Mantua, both because it summarizes in a single text the different nuances and different directions that his writing has taken over the course of his literary career, also due to a writing and processing time that embraces the entire span of years of his career itself. In the foreground, in addition to the numerous and brilliant characters, one of the protagonists is the Mantuan landscape which, not a simple background, becomes a true literary parameter which in different and significant ways affects the purposes and mechanisms of the novel
Interoperable mixed reality for facility management: a cyber-physical perspective
No full textThe management of building commissioning requires specialists from different organizations and with different skills. Collaboration processes involves several actors and decision-making at different levels. As building commissioning has already been described as systems-of-systems (SoS), the research reported in this paper claims that this definition can be extended into cyber-physical system-of-systems (CPSoS), requiring identification and support of both human-machine and machine-machine interactions in a hybrid environment. These requirements give rise to several challenges, such as capturing information about the existing facility, visualizing, comparing, and validating the compliance of alternative commissioning projects. The study presented in this paper reports methodological and technological solutions that are built on the integration between BIM and mixed reality, to actualize a CPSoS paradigm and to implement human-machine interaction for situated cognition towards an immersive collaborative working environment. The results of the experimental platform have been showcased in a full-scale real-life demonstrator
Plenary Session: Luis Alberto Urrea
No full texta) Plenary Session: Luis Alberto Urrea, Mexican American Chicago Writer
Luis Alberto Urrea is a 2005 Pulitzer Prize finalist for non-fiction and member of the Latino Literature Hall of Fame. He is a prolific and acclaimed writer who has used his dual-culture life border experiences to explore the complex and interconnected Mexican-US American reality. The critically acclaimed and best-selling Mexican-born author of 13 books, Urrea has won numerous awards for his poetry, fiction and essays.
Moderator: Dr. Héctor García, Loyola University Chicag
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