1,720,960 research outputs found
Spatial distribution of fungal microflora in the sedimento f a brackish lake (Lake Alimini Grande, Italy) used for fish production and bathing
No full textFruibilità di risorse idriche pregiate nel territorio afferente all'Unione dei Comuni"Terre D'Oriente" nel Sud-Salento.
No full textStudio di captazione in vitro di E. coli in campioni di Mytilus galloprovincialis: risultati preliminari.
No full textSpatial distribution of fungal microflora in the sediment of a brackish lake (Lake Alimini Grande, Italy) used for fish production and bathing.
No full textA study of the distribution of fungal microflora was conducted on the sediment of Lake Alimini Grande in order to contribute to the evaluation of the ecosystem characteristics that can effect the process of decomposition. The isolation and identification of fungal species and ergosterol analysis were performed on sediment samples taken from 33 monitoring stations in autumn and winter. Altogether, 24 strains belonging to 8 genera were isolated. Trichoderma spp (41.6%) and Aspergillus spp (20.8%) were the dominant genera: in particular, Trichoderma was present near the Traugnano marsh, whereas Aspergillus was isolated in the area of connection to the sea
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
Il controllo ufficiale delle acque destinate al consumo umano nel territorio della ASL LE/1 nell'anno 2006
No full textIl presente studio riporta l'analisi dei risultati ottenuti dagli interventi ispettivi condotti nell'anno 2006 dal Dipartimento di Prevenzione - Servizio di Igiene Alimenti e Nutrizione - dell'AUSL LE/1 sulla rete di distribuzione delle acque destinate al consumo umano nel bacino territoriale di competenza.
l'attività di controllo della rete idrica dell'Acquedotto Pugliese ha riguardato la raccolta e l'analisi di 348 campioni, prelevati da serbatoi, pozzi di emungimento e fontanine.
Delle 266 analisi di routine e 82 di verifica condotte su campioni prelevati, solo il 4,2% sono risultate non conformi ai sensi del D.Lgs. 31/01, esclusivamente per il parametro "cloruri" (>di 250 mg/l). Le acque profonde della penisola salentina presentano concentrazioni di salinità nel complesso elevate, in relazione alle caratteristiche idrogeologiche del territorio. La falda acquifera che circola nel sottosuolo salentino è infatti sostenuta alla base da acqua marina da invasione continentale che tende ad influenzarne la qualità. Tale "contaminazione salina" dipende dal grado di intrusione delle acque marine, dalla quantità di acqua prelevata e dal regime pluviometrico e, in genere decresce dalla costa verso entroterra. Inoltre occorre considerare che l'immissione nella rete idrica dell'acqua proveniente dai pozzi di emungimento garantisce il mescolamento e, pertanto, una certa diluizione dei parametri chimico-fisici in eccesso, così come confermato dalle analisi condotte sulle fontanine risultate sempre "regolari" anche per i parametri indicatori
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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