1,720,975 research outputs found
Indagine paleonutrizionale mediante spettroscopia ad assorbimento atomico sui resti scheletrici protoeneolitici di Piano Vento
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Inquinamento dei reperti ossei nel terreno: verifica del livello di contaminazione e sua correzione analitica
No full text“Horseman Syndrome” in the Tuscan Early Middle Age: The sk888 Case
No full textNel contributo è illustrato il caso di un individuo con sindrome del cavaliere rinvenuto nello scavo della chiesa medievale dei SS. Quirico e Lucia all'Ambrogiana (Montelupo Fiorentino-Fi)
Indagine paleonutrizionale su tre individui da sepolture altomedievali d Spinellina (Valtiberina Toscana, Sansepolcro - AR)
No full textIl caso di S. Vito di Calci (Pisa): analisi antropologica e paleopatologica di una "fossa comune" basso-medievale
No full textA late Renaissance case of trepanation and pseudopathological damage from Populonia (central Italy)
No full textIndagine sul contenuto di metalli pesanti in carni di cinghiali regolarmente macellati nella provincia di Siena
No full textHeavy metals have a paramount role and their presence has been assessed to be almost ubiquitary; although some of these elements are essential for biological systems, their excess is usually associated to harmful effects for health. The presence of lead and cadmium, non essential and toxic metals, and chrome, an essential metal, but with toxic effects in high concentration, were investigated in some organs and tissues of boars regularly slaughtered in the province of Siena. The level of the considered metals were measured in liver, kidneys, masseter muscle and midriff muscle of 24 animals raised in areas located nearby an industrial complex for glass manufacturing (group 1), and of 12 animals raised in the same conditions, but about 15 kilometres far from the factory (group 2). Analysis performed in animals of the group 1 highlighted, either in liver or in kidneys, mean lead values above law limits, established in the Regulation 466/2001/CE, which were not overcome in masseter and midriff muscle. On the contrary, analysis carried out in group 2, attested values beneath limits in all organs. About cadmium, none of the groups showed values above law limits. Finally, measured chrome levels were found to be beneath the ones assessed in cases of poisoning from metal and for this reason remaining within the values of the supposed normal condition. In conclusion, lead level higher than law limits, found in some organs of the animals breeded nearby the factory, suggest a possible environmental contamination by the industrial complex. However, we think that such assessment must be confirmed by further studies and extended investigations, supporting the preliminary results obtained in this work. Finally, our study shows as the boar might be considered a biological indicator, exploitable for different kind of investigations, because of the simple availability in the slaughter house of the organs in which heavy metals accumulate, such as liver, kidneys and some portions of muscles, resulting of low commercial interest and so obtainable for analysi
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
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