1,720,984 research outputs found

    Strategic Positioning of the Venice Biennial: Analysing the Market for Periodic Contemporary Art Exhibitions

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    Ricerca empirica volta al posizionamento strategico delle Biennali d'Art

    Transfusion issues in cancer patients

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    Allogeneic blood transfusion (ABT) therapy plays a major role in the case of patients with cancer. Packed red blood cells (PRBC) are given for increased oxygen-carrying capacity, platelets concentrates (PC) and fresh frozen plasma (FFP) for the cessation and prevention of bleeding due to thrombocytopenia and other defects of hemostasis associated with neoplasia. All these blood components can induce complications and/or adverse reactions in cancer patients including transfusion-associated graft versus host disease (TA-GVHD), transfusion transmitted diseases, alloimmunization to blood cell antigens, pulmonary decompensation, immunomodulation. Therefore, specific modifications such as leukocyte-reduction and irradiation of the blood components to be transfused in cancer patients should be introduced to reduce the risk of these complications. Patients undergoing hematopoietic progenitor cell (HPC) transplantation are a unique group and present complex concerns related to transfusion, including major and minor ABO incompatibility and chimeric blood cells. Therefore, transfusion for patients undergoing treatment with cellular therapies requires careful blood component selection. The process of HPC infusion itself carries many risks including DMSO toxicity and hemolytic reactions. In all areas of transfusion therapy, new advances such as pathogen inactivation and synthetic alternatives to blood components should help to increase the safety and tolerance of transfusion in cancer patients

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

    Personificazioni di città e Tychai poleos: le emissioni provinciali del Roman Near East nella prima età imperiale. Raccolta preliminare dei dati

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    Il contributo rientra nell’ambito della ricerca intrapresa dall’unità locale dell’Università di Bologna all’interno del progetto PRIN 2009 “Moneta e identità territoriale: dalla ‘polis’ antica alla ‘civitas’ medievale” e si propone, innanzitutto, di restituire una rassegna delle occorrenze monetali relative a figure femminili differenti, identificate genericamente, e talvolta in modo fuorviante, come Tychai. In particolare, sono state prese in esame le rappresentazioni delle personificazioni cittadine attestate dalla produzione monetale delle zecche della provincia di Syria, nel periodo compreso tra l’annessione romana dei territori e la fine dell’età giulio-claudia. Dal punto di vista interpretativo, l’analisi della documentazione numismatica riferibile a questo contesto ha evidenziato problemi legati al riconoscimento corretto delle immagini monetali, comportando la necessità di individuare procedimenti utili alla predisposizione di una raccolta, il più possibile sistematica e obiettiva, dei dati inerenti la tematica di ricerca. Il contributo dà conto della realizzazione di un database, nel quale sono confluite tutte le caratteristiche denotative e le accezioni peculiari di ciascuna emissione, mettendo in stretta relazione gli elementi figurativi e le formule epigrafiche che definiscono ciascuna tipologia monetale. I dati così raccolti sono stati sintetizzati in una tabella, che consente di visualizzare gli schemi iconici utilizzati nella rappresentazione di figure femminili, individuate genericamente ed indistintamente come Tychai dai repertori numismatici impiegati per la schedatura. La verifica delle occorrenze della corona muralis – assunta come elemento di discrimine per l’individuazione delle figure identificabili come rappresentazioni di entità cittadine – ha restituito un quadro generale della documentazione oggetto di indagine, caratterizzato dall’identificazione di tre schemi iconici di base, corrispondenti ad altrettante aree differenti della provincia di Syria

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We 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

    Maternal methylenetetrahydrofolate reductase (MTHFR) homozygosity and neonatal outcome : follow-up of 42 pregnancies at risk

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    From February 2006 to March 2008, 42 pregnant women homozygous for the 677CT-methylenetetrahydrofolate reductase (MTHFR) allele were recruited in our obstetrics service for pregnancy at risk. All had antithrombotic prophylaxis with low-dose aspirin and/or low-molecular-weight heparin, supplemented with folic acid. In all, 2 women lost the fetus and 4 were lost to follow-up before delivery. A total of 36 women delivered term infants who all underwent transfontanellar ultrasonography within 24 hours of birth. Six (16.6%) had ischemic or hemorrhagic cerebral lesions. No differences were observed in gestational age, birth weight, or umbilical cord pH between the 30 healthy infants and the 6 with cerebral lesions. Neonatal outcomes were negative in spite of maternal folic acid supplementation and antithrombotic prophylaxis during pregnancy. This suggests a relationship between maternal homozygous mutation in the 677CT-MTHFR allele and neonatal cerebral lesions
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