1,720,997 research outputs found
Eco-balancing of materials recovered from construction and demolition (C&D) waste
No full textIn recent years, in Italy, a large quantity of construction and demolition (C&D) waste has been generated: in the year 2004 a production of about 46,0 Mt of C&D waste has been estimated. After a mechanical treatment, such waste can be recovered and recycled as secondary raw material, determining economic and environmental benefits, by reducing landfilling, transportation and primary resources consumption. To date, the recycling rate of C&D waste in Italy is very low-about 10%-compared with the recycling rate of most of European countries, due to the large availability of natural resources. This study is aimed to carry out an analysis of C&D waste flow from a representative area in Italy, considering both the amount properly disposed or recycled, both the amount illegally dumped on the territory or in the containers for municipal solid waste. Furthermore, the eco-balancing as a particular procedure of the Life Cycle Assessment (LCA) methodology, has been applied to in order to optimize C&D waste recycling and material recovered, considering the environmental impact connected to different C&D waste management schemes. Data obtained from the eco-balancing allow to quantify the environmental performance, to estimate the costs of each scheme considered, and finally to evaluate the best C&D waste management. © 2011 by Nova Science Publishers, Inc. All rights reserved
ECO-PACK. Studio e confronto del profilo ambientale di tre imballaggi per CD/DVD, secondo le norme ISO 14040-14044: due realizzati dal Nuovo SCatolificio Valtenna Srl e uno da un competitor
No full textRapporto finale dello studio di LCA di tre differenti imballaggi per CD/DVD per l'ottimizzazione e il redesign ambientale del prodotto
Scenari di miglioramento delle prestazioni ambientali di imballaggi per CD/DVD tramite metodologia LCA
No full textIl capitolo illustra i principali risultati di uno studio comparativo delle prestazioni ambientali del ciclo produttivo di tre tipologie di imballaggio per il confezionamento, la distribuzione e la custodia di due CD/DVD e di un piccolo manuale. Lo studio si è occupato di effettuare l'analisi comparativa con la metodologia LCA per le tre tipologie di imballaggio: Pack A, prodotto dall'azienda Valtenna (commissionaria dello studio), Pack B, monomaterico, Pack C, prodotto concorrente; è stato simulato anche uno scenario intermedio di miglioramento del Pack A con sostituzione di un solo componente. I risultati, raccolti in questo capitolo, mostrano un evidente vantaggio ambientale del prototipo Pack B e anche del Pack A migliorato rispetto al Pack C del concorrente o all'originale Pack A
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
La definizione dei sistemi di prodotto di riferimento negli standard ISO 14000: applicazione nel Passaporto Ambientale per i prodotti agroalimentari della Montagna Vicentina
No full textEvaluation of the sustainability of technologies to recover phosphorus from sewage sludge ash based on embodied energy and CO2 footprint
Full text linkThis paper reports a novel and simplified approach for sustainability evaluation of new technologies, based on the use of two parameters (i.e. embodied energy and CO2 footprint) that account for the energy and emissions involved in the formation of a material, suitable to perform pre-screening analysis, preliminary to life cycle assessment. This new approach is presented and used to compare the available technologies for phosphorous recovery from sewage sludge ash. A dimensionless index, defined as SUB-RAW index, is used to compare the results about the environmental impact of each selected substituting material/process. This method is applied to full, pilot, and laboratory scale processes available in literature in the context of phosphorus extraction technologies. The results show that wet chemical leaching approaches appear to be the most sustainable methods
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Life Cycle Assessment e monetizzazione degli impatti come strumenti di supporto alle politiche di circular economy nel settore edilizio.
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