1,721,031 research outputs found
Molecular data on two mitochondrial genes of a newly discovered crustacean species (Lightiella magdalenina, Cephalocarida)
No full textCephalocarida is a rare and poorly known class of small benthic crustaceans, consisting of only eleven species belonging to five genera. Thus far, only one species (Hutchinsoniella macracantha) has been studied at molecular level. We report the partial sequences of two phylogenetically important mitochondrial genes (Cytochrome c Oxidase I and Cytochrome b) from the newly discovered Mediterranean species, Lightiella magdalenina. The genetic relationships between the two cephalocarid species are discussed. © Marine Biological Association of the United Kingdom 2009
Parchi, piani, progetti. Ricchezza di risorse, integrazione di conoscenze, pluralità di politiche
No full textProblems of an aquatic diet in trace element analysis: The coastal site of Qurum RH5 (Sultanate of Oman, 3.700-3.200 b.C.)
No full textTrace elements analysis, as an indicator of ancient diets, has been carried out to the human skeletal remains from the necropolis of RH5 and RH10 of Qurum (Sultanate of Oman, 3700–3200 B.C.). Soil samples from the inner part of the burials, shells, fish, turtles and herbivorous remains have been analyzed. Regarding the human bones, a first set (ribs) was related to 26 females and 41 males while a second set (femurs) was related to 22 females and 34 males. Four trace elements, among the most common indicators of diet, have been taken into consideration (barium, strontium, zinc and copper) for their stability to diagenetic effects. Manganese has been analyzed to determine the incidence of diagenesis.
Data from the two sets of human bones show a narrower range of values for the femurs than for the the ribs, in agreement with a lower incidence of diagenesis in compact bones. A wider range of values from the animal samples show a higher incidence of diagenetic effects in these remains. Low levels of variability can be stressed for the soil samples. Post-mortem exchange could have more likely occurred in the outer parts of spongy bones, as manganese seems to show. The wide range of values from the ribs and, on the contrary, the narrow range from the femur indicate that an accurate choice of sample can reduce the effects of diagenesis.
Regarding the alimentary habits of the groups from Qurum, the human samples (both males and females) show high rates of strontium, similar to the herbivorous. This could be associated to an aquatic diet. It is unlikely that the high levels of strontium could be linked to a high incidence of vegetables in the diet. Also archeological data seem to stress a prevalence of aquatic food in the diet. Not always do statistical analyses applied to groups with different anthropological or chronological characteristics give clear answers to the identification of ranges of values, but they have always been a valid support for the interpretation of data
The experience of Palaia and Capannoli: Co-planning and participation in a new territorial strategy based on protection of the environment and sustainable development
No full textSurname analysis of the corsican population reveals an agreement with geographical and linguistic structure
No full textI cognomi: una fonte per la ricostruzione della storia biologica delle comunità Arbereshe del Parco Nazionale del Pollino.
No full textFrom old markers to next generation: reconstructing the history of the peopling of Sardinia
No full textContext: For many years the Sardinian population has been the object of numerous studies because of its unique genetic structure. Despite the extreme abundance of papers, various aspects of the peopling and genetic structure of Sardinia still remain uncertain and sometimes controversial. Objective: We reviewed what has emerged from different studies, focussing on some still open questions, such as the origin of Sardinians, their relationship with the Corsican population, and the intra-regional genetic heterogeneity. Methods: The various issues have been addressed through the analysis of classical markers, molecular markers and, finally, genomic data through next generation sequencing. Results and conclusions: Although the most ancient human remains date back to the end of the Palaeolithic, Mesolithic populations brought founding lineages that left evident traces in the modern population. Then, with the Neolithic, the island underwent an important demographic expansion. Subsequently, isolation and genetic drift contributed to maintain a significant genetic heterogeneity, but preserving the overall homogeneity on a regional scale. At the same time, isolation and genetic drift contributed to differentiate Sardinia from Corsica, which saw an important gene flow from the mainland. However, the isolation did not prevent gene flow from the neighbouring populations whose contribution are still recognisable in the genome of Sardinians
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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