205 research outputs found
Parole del mondo globale. Percorsi politici ed economici nella globalizzazione
No full textQuanti anni ha la globalizzazione? Se si parte da Hiroshima, più di 60, se invece si prende come punto di riferimento la catastrofe di Chernobyl, più di 20. In ogni caso, anche considerando la caduta del Muro di Berlino, è ormai "maggiorenne".
Passata la fase delle analisi e delle previsioni, è giunta l'ora dei primi bilanci, così da smentire o confermare le inquietudini profonde che ne hanno accompagnato lo sviluppo.
Senza la pretesa di essere esaustivo, questo libro vuole mettere a fuoco i profondi mutamenti prodotti negli ultimi anni, generatori di un processo che ha fatto cadere barriere economiche, politiche e culturali.
Partendo da alcune parole chiave che esprimono i diversi aspetti della globalizzazione, le riflessioni di economisti, filosofi, scienziati della politica e della comunicazione prospettano percorsi altrettanto diversi per affrontare meglio la complessità di questo fenomeno, e per orientarsi tra i numerosi contributi che la pubblicistica continua a produrre.
In quest'ottica di servizio colto ma non specialistico, il volume contiene anche un glossario che chiarisce, precisa e aggiorna le diverse declinazioni del fenomeno, soprattutto quelle utilizzate dai fronti più radicali "global" e "no global", così cariche di emozioni, pregiudizi, ma anche di preoccupazioni fondate e legittime
Beyond Ethnic Intolerance: Traces and Benefits of Ethnic Diversity in Post-War Bosnia-Herzegovina
No full textIn the first section, the main socio-psychological theories on group interaction are
briefly discussed. In the following sections, TRACES data regarding Bosnia-
Herzegovina are presented and discussed. Particular attention is given to ethnic
heterogeneity and its positive or negative effects on intergroup attitudes. Finally, based
on our findings, we present several considerations concerning the promotion of
tolerance and the reconstruction of multi-cultural communities in Bosnia-Herzegovina
Ecology of bacterial communities during petroleum biodegradation: a molecular analysis on degrading consortia isolated from hydrocarbon polluted soils, sediment and seawater samples
No full textEnvironmental microbial communities are key players in the transformation and miner- alization of hydrocarbon pollutants. The aim of this study was to assess changes in bacterial abundance and diversity during the degradation of Tunisian Zarzatine oil by four indigenous bacterial consortia isolated from different polluted environmental matrix (a petroleum sta- tion soil, refinery reservoir soil, harbor sediment and harbor seawater). The microcosms were inoculated for two months with either a defined bacterial consortium and Zarzatine crude oil as only carbon and energy source. The microbial community dynamics was evaluated weekly in microcosms using Illumina 16S rRNA gene sequencing. An average of 7020 sequences per samples were obtained, the measured coverage was higher than 97% and more than 60% of sequence were correctly classified at species level. Degrading consortia enriched from soil and sediments were dominated by species belonging to Pseudomonas and Acinetobacter gen- era, while in the seawater-derived consortia Dietzia, Fusobacterium and Dicoplana emerged as dominant genera. We identified specific OTUs whose relative abundances bloomed from small to high percentages and were significantly correlated to total petroleum degradation: an OTU classified as Dietzia daqingensis in the seawater microcosms, and three OTUs classified as Acinetobacter venetianus in all two soils and sediment derived microcosms. Interestingly, a comparative analysis showed that this was the same OTU in all 3 microcosms which were derived from consortia isolated from different types (soil or sediment) and location. The work provides detailed insights about the modulation of bacterial communities involved in petroleum biodegradation
Thin membranes based on FBG sensors for real-time sub-bandage pressure monitoring
No full textThis work focuses on the manufacturing and testing of a new device for medical bandage monitoring. Excessive pressure exerted from the compression bandage can block the blood flow of the patient, causing different medical complications to the skin, nerves, and circulatory system. On the contrary, if the pressure applied is low, the therapy is not effective. The utility, therefore, arises from a device capable of quantitatively indicating the correct adjustment of the bandage. The technological demonstrators developed consist of a polyurethane elastomeric shell with a thin composite supporting core. Fiber Bragg grating sensors (FBGSs) embedded within this core permit the detection of the subbandage pressure applied during compression therapy. The two prototypes were applied under arm bandages to evaluate their capability to transmit the applied pressure to the embedded FBGS. We demonstrated the ability to monitor the bandaging action by measuring the level of pressure exerted with the rounds of bandages. Moreover, the thin membranes permit the monitoring of the heartbeat of the patient, giving feedback about blood irrotation. The device developed is, therefore, promising to improve the results of compression therapy
Articuler l'individuel et le collectif
No full textSpecial Issue of : Nouvelle Revue de Psychologie Sociale / New Review of Social Psychology to the honour of Willem Doise.
Staerklé C, Spini D : invited author
Modeling semantics for building deconstruction
No full textIn this paper we discuss the motivation, the technology, the design and the use-model of a novel web service for quantity surveyors, aiming to exploit virtual and augmented reality methods to implement a "zero waste" model, i.e. a new design paradigm where the waste materials from demolition become resources for reconstruction. The goal of this project is to provide virtual/augmented reality tools through quick modeling of buildings and their fast augmentation with semantic content
Water-Based Photocatalytic Sol–Gel TiO2 Coatings: Synthesis and Durability
No full textThe environmental impact of industrial technologies and related remediation methods are major research trend lines. Unfortunately, in the development of materials for wastewater treatment or air purification, hazardous reactants are often employed, reducing the overall beneficial contribution of such technology on the environment. We here synthesize stable titanium dioxide (TiO2) sols using a green route, with titanium tetraisopropoxide (TTIP) as precursor, water as solvent and acetic acid acting as catalyst, chelating agent and peptizing agent. The sol was deposited on glass by dip-coating and then analyzed using XRD, SEM and spectrophotometry. Wastewater purification ability was evaluated in the photocatalytic degradation of two organic dyes (Rhodamine B and Methylene Blue). Results on RhB showed > 85% degradation in 6 h maintained along a series of 7 tests, confirming good efficiency and reusability, and 100% in 3 h on MB; efficiency mostly depended on calcination temperature and layer thickness. High photodegradation efficiency was found in nonannealed samples, suggesting TiO2 nanoparticles crystallization during sol–gel production. Yet, such samples showed a gradual decrease in photoactivity in repeated tests, probably due to a partial release of TiO2 particles in solution, while on calcined samples a good adhesion was obtained, leading to a more durable photoactive layer
Interaction between different genes controlling endosperm development in maize
No full textIn this report we present the results of a complementation test involving nine emp (empty pericarp) mutants of maize that represent single gene mutants, isolated as independent events.
These mutants are embryo lethal at maturity and drastically reduced in their endosperm size. They can be subdivided in two major subgroups: those with a flat appearance of the kernel and those with a wrinkled pericarp.
By crossing inter-se plants heterozygous for emp mutants, we identified those non-complementing (that means allelic) and those complementing (that means not allelic) in the F1 generation. Most results in the F1 were concordant to those obtained in the F2 generation with the exception of four cases where the F1 results suggest allelism (i.e. one gene) whereas those in the F2 segregation of two genes.
This intriguing result seems to suggest an interaction between different emp mutants due to second site non-complementation (SSNC).
In addition while scoring ears segregating for a single emp mutant, in different genetic backgrounds, we noticed that some mutant seeds exhibited a more abundant endosperm tissue and occasionally an embryonic axis. About 10% of these seeds germinate yielding slow growing seedlings. This observation could be explained by assuming that emp mutants introduced in different genetic backgrounds uncover a cryptic variability. This point needs to be further investigated but if confirmed, emp mutants could be used as a tool for the detection of genetic factors contributing to the amount of endosperm in the maize kernel to exploit in breeding programs
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