1,720,975 research outputs found
Symbiosis User Network - SUN proceedings of the sixt SUN Conference - November 8th 2022
No full textLa simbiosi industriale è uno strumento cruciale per rilanciare la competitività, ridurre la dipendenza dalle materie prime, rilanciare l'economia e aumentare la resilienza del sistema attraverso ecosistemi territoriali in grado di assorbire scompensi esogeni. Come evidenziato anche dal Comitato Economico e Sociale Europeo nel documento «Prevedere i cambiamenti strutturali e settoriali e ripensare le culture industriali: verso nuove frontiere di ripresa e resilienza nelle diverse parti d’Europa» del 2022, l’aumento della circolarità e la simbiosi industriale sono altresì aspetti importanti nella decarbonizzazione dell’industria e nella preparazione a un futuro caratterizzato da imprese efficienti e fortemente produttive. In tale direzione, nel 2021 l’aggiornamento della “Strategia nazionale per l’economia circolare” prevista tra le 63 riforme fondamentali per l'attuazione degli interventi del Piano Nazionale di Ripresa e Resilienza italiano, ha individuato la simbiosi industriale come una delle nove aree di intervento necessarie per realizzare la transizione verso l’economia circolare nel nostro Paese. La sesta edizione del convegno proposto dalla rete SUN, dal CTS di Ecomondo e da ENEA, tenutasi l’ 8 novembre 2022, dal titolo “The industrial symbiosis for the national circular economy strategic plan”, ha visto quasi 200 partecipanti e ha rappresentato un appuntamento utile per avere una panoramica del percorso fatto sin qui in Italia sulla simbiosi industriale e sulle prospettive future. Il volume contiene gli atti del convegno
The contribution and potential of Industrial Symbiosis for the ecological transition. SymbiosisUsers Network - Sun Proceedings of the fifth SUN Conference, October 27th 2021
Full text linkLa simbiosi industriale si sta sempre più affermando in Italia come strumento operativo dell’economia circolare per l’implementazione della transizione ecologica. In tale direzione, il Piano Nazionale di Ripresa e Resilienza (PNRR), approvato nell’aprile del 2021, nella Missione 2 “Rivoluzione Verde e Transizione ecologica” prevede di definire una nuova strategia nazionale per l’economia circolare, includendo anche misure concrete per l’applicazione della simbiosi industriale attraverso appositi strumenti normativi e finanziari. L’evento (e la call for paper) vuole essere una occasione per confrontarsi su casi concreti di simbiosi industriale (con dettaglio degli aspetti operativi, procedurali, economici ed ambientali, anche con riferimento ai potenziali di decarbonizzazione), sugli standard tecnici e/o operativi e sugli strumenti a supporto sia della implementazione sia degli investimenti per la simbiosi industriale. ENEA si è fatta promotrice nel 2016 della costituzione della prima rete italiana di simbiosi industriale, SUN - Symbiosis Users Network, che coinvolge diversi stakeholder coinvolti su tematiche di tipo operativo sul tema della simbiosi industriale. La quinta edizione del convegno proposto dalla rete SUN, dal CTS di Ecomondo e da ENEA, tenutasi in edizione mista presenza e on-line il 27 ottobre 2021, dal titolo “Il contributo ed il potenziale della simbiosi industriale per la transizione ecologica”, è stato seguito in diretta streaming e in presenza da quasi 200 partecipanti e ha rappresentato un appuntamento utile per avere una panoramica del percorso fatto sin qui in Italia sulla simbiosi industriale e sulle prospettive future. Il volume contiene gli atti del convegno
Symbiosis Users Network - SUN Proceedings of the fourth SUN Conference - November 4th 2020
Full text linkLa simbiosi industriale costituisce una pratica strategica per ottenere risultati vitali alla competitività e all’efficienza del sistema paese: prevenzione della produzione di rifiuti dalle filiere produttive, ottimizzazione delle risorse, competitività e sostenibilità del sistema industriale e territoriale. Vista a livello sistemico, la simbiosi industriale non è solo una pratica, ma un insieme di relazioni complesse tra i molti attori coinvolti che possono a loro volta agevolare nuove sinergie, economie di scala, aumentare la cooperazione produttiva e organizzativa su più fronti. ENEA si è fatta promotrice nel 2016 della costituzione della prima rete italiana di simbiosi industriale, SUN - Symbiosis Users Network, che coinvolge diversi stakeholder coinvolti su tematiche di tipo operativo sul tema della simbiosi industriale. La quarta edizione del convegno proposto dalla rete SUN, dal CTS di Ecomondo e da ENEA, tenutasi in edizione on-line il 4 novembre 2020, dal titolo “Il ruolo della simbiosi industriale per la prevenzione dei rifiuti: a che punto siamo?”, è stato seguito in diretta streaming da quasi 200 partecipanti e ha rappresentato un appuntamento utile per avere una panoramica del percorso fatto sin qui in Italia sulla simbiosi industriale e sulle prospettive future. Il volume contiene gli atti del convegno
Chemical characterization and surface properties of a new bioemulsifier produced by Pedobacter sp. strain MCC-Z
No full textA novel biopolymer was described in the form of an extracellular polysaccharide (EPS) by Pedobacter sp. strain MCC-Z, a member of a bacterial genus not previously described as an emulsifier producer. The new biomolecule was extracted, purified and characterized, and its surface and emulsifying properties were evaluated. The purified bioemulsifier, named Pdb-Z, showed high emulsifying activity (E24%=64%) and reduced the surface tension of water up to 41mN/m with a critical micelle concentration value of 2.6mg/mL. The chemical characterization of Pdb-Z was performed using 1H NMR, FT-IR, HPLC/MS/MS and GC/MS. Pdb-Z was found to contain 67% of carbohydrates, consisting mainly of galactose and minor quantities of talose, 30% of lipids, being pentadecanoic acid the major lipidic constituent, and 3% of proteins. The bioemulsifier was a glycolipids-protein complex with an estimated molecular mass of 106Da. Furthermore, Pdb-Z emulsified pure aliphatic and aromatic hydrocarbons as well as diesel more efficiently than commercial synthetic surfactants, used for comparison. Our results suggest Pdb-Z has interesting properties for applications in remediation of hydrocarbon-contaminated environments and bioremediation processes. © 2014 Elsevier B.V.
Scheffersomyces stipitis ability to valorize different residual biomasses for vitamin B9 production
Full text linkSugar beet pulp (SBP), sugar beet molasses (SBM) and unfermented grape marcs (UGM) represent important waste in the agro-food sector. If suitably pre-treated, hexose and pentose sugars can be released in high quantities and can subsequently be used by appropriate cell factories as growth media and for the production of (complex) biomolecules, accomplishing the growing demand for products obtained from sustainable resources. One example is vitamin B9 or folate, a B-complex vitamin currently produced by chemical synthesis, almost exclusively in the oxidized form of folic acid (FA). It is therefore desirable to develop novel competitive strategies for replacing its current fossil-based production with a sustainable bio-based process. In this study, we assessed the production of natural folate by the yeast Scheffersomyces stipitis, investigating SBM, SBP and UGM as potential growth media. Pre-treatment of SBM and SBP had previously been optimized in our laboratory; thus, here we focused only on UGM pre-treatment and hydrolysis strategies for the release of fermentable sugars. Then, we optimized the growth of S. stipitis on the three media formulated from those biomasses, working on inoculum pre-adaptation, oxygen availability and supplementation of necessary nutrients to support the microorganism. Folate production, measured with a microbiological assay, reached 188.2 ± 24.86 μg/L on SBM, 130.6 ± 1.34 μg/L on SBP and 101.9 ± 6.62 μg/L on UGM. Here, we demonstrate the flexibility of S. stipitis in utilizing different residual biomasses as growth media. Moreover, we assessed the production of folate from waste, and to the best of our knowledge, we obtained the highest production of folate from residual biomasses ever reported, providing the first indications for the future development of this microbial production process
Linea Guida per la Gestione Ambientale nelle Piccole e Medie Imprese del settore floricolo
No full textLife Cycle Assessment of Electricity Production from Different Biomass Sources in Italy
Full text linkThe European Union is targeting climate neutrality by 2050, with a focus on enhancing energy efficiency, expanding renewable energy sources, and reducing emissions. Within Italy’s electricity mix, bioenergy sources, namely biogas, solid biomass, and bioliquids, play a crucial territorial role. A comparative analysis was conducted through Life Cycle Assessment (LCA), utilizing national data from the ARCADIA project, to assess the environmental sustainability of the investigated bioenergy chains and identify the most convenient ones. The study revealed that, among the bioenergy sources, solid biomass emerges as the most environmentally friendly option since it does not rely on dedicated crops. Conversely, biogas shows the highest environmental impact, demonstrating less favorable performance across nine out of the sixteen evaluated impact categories. The LCA underscores that the cultivation of dedicated energy crops significantly contributes to environmental burdens associated with electricity generation, affecting both biogas and bioliquids performance. The cultivation process needs water and chemical fertilizers, leading to adverse environmental effects. These findings highlight the importance of prioritizing residual biomass for energy generation over dedicated crops. Utilizing forestry and agro-industrial residues, municipal solid waste, and used cooking oils presents numerous advantages, including environmental preservation, resource conservation and recovery, as well as waste reduction
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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