1,721,147 research outputs found
ANAEROBIO: a new model for the sustainability of the generation of energy by biomass anaerobic digestion
No full textAnaeroBIO is a project funded by the Government of Tuscany Region dealt with
the optimised choice and use of different no-food biomasses and wastes destined to energy
production. Suitable mixtures of biomasses available on regional scale as starting materials were
first selected by means of multivariate statistical analysis applied to database collecting
information regarding several aspects of biomasses. Laboratory scale and small pilot-plant scale
experiments for biogas production were carried out on a number of mixtures previously defined
from a proper experimental design. In last phase of project, the development of a predictive
model that could be easily used for feasibility assessment of plants and projects was performe
Microbiological quality of leacheate from municipal solid waste landfill sites and infection risk for workers. In Christensen TH, Cossu R, Stegmann R. Leachate, gas, operation and health effects in ladfills
No full textCriteri metodologici per la valutazione dell’efficienza del processo di stabilizzazione dei rifiuti
No full textAl fine di valutare l'efficacia di ricette di stabilizzazione condotte sui differenti tipologie di rifiuti, in termini di diminuzione della lisciviabilità degli inquinanti, sono state messe a punto particolari procedure di Bilancio di Materia. Le procedure sono raccolte e tradotte in calcoli, grazie all’impiego di macro su fogli Excel®, che forniscono il giudizio finale espresso come “Stabilizzazione %”. Il risultato ottenuto misura l’efficacia del processo di trattamento effettuato, valutando la diminuzione o l’aumento (nel caso di processi non efficaci) delle quantità relative di inquinanti lisciviati. La procedura confronta i risultati ottenuti nei test di cessione sui materiali stabilizzati con i risultati al test di cessione sui singoli rifiuti non trattati, opportunamente corretti per la diluizione che i singoli rifiuti hanno ricevuto nella miscela finale. Il metodo si presta per la valutazione della stabilizzazione anche in processi in cui due o più rifiuti sono miscelati tra loro
Natural Soil Mixed with paper Mill Sludge Characterization by 1H Nuclear Magnetic Resonance Longitudinal Relaxation Time
No full textProton Time Domain Nuclear Magnetic Resonance (1H TD-NMR) is a powerful non-invasive and non-destructive technique widely used in many fields to investigate porous media saturated with water. However, 1H TD-NMR is not so much used in soil science, especially on samples rich in organic content. In this study the correlation of the longitudinal relaxation times to the total organic carbon content of materials used in remediation treatment (in particular, mixtures of paper mill sludges and natural soils) has been investigated. In these samples it has been observed a correlation between the increase of carbon content and the decrease of detected water in the micropores. This result corroborates the idea that organic matter tends to migrate inside the micropores, leaving less space available for water
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
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