1,721,021 research outputs found
Strehler e la Francia. 1943-1959
No full textTommaso Zaccheo, in Strehler e la Francia. 1943-1959, osserva l’importanza di Giorgio Strehler nella storia del teatro francese: il saggio indaga la progressiva costruzione della relazione tra Strehler e la Francia negli anni Quaranta e Cinquanta. Partendo da un minimo ma necessario approfondimento sulla lettura e l’uso che Strehler fa del pensiero dei grandi maestri della scena francesi negli anni precedenti al 1943, ci si concentra poi su un’analisi di documentazione diretta, per tornare sulla sua esperienza teatrale ginevrina sul finire della guerra, seguirlo poi nelle sue primissime tournée in Francia a partire dal 1948 e infine soffermarsi sul tentativo di realizzare un «Cartel européen» di teatri d’arte e di servizio pubblico con Jean Vilar nel 1959. Il percorso analitico proposto permette di mostrare tutta la novità della relazione tra Strehler e la Francia nel secondo dopoguerra europeo, ovvero quanto questa sia in realtà, poco conosciuta
L'Arlecchino goldoniano
No full textIl saggio esamina la storia degli allestimenti de Il servitore di due padroni di Goldoni, realizzati da Giorgio Strehler, e osserva il successivo approfondimento della lettura registica proposta. Si sofferma in particolare sull'edizione del 1973, in cui il regista innesta una lettura fondata sul meccanismo del teatro nel teatro, che guida la riflessione dello spettatore a osservare la potenza veritativa della scena
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
Effect of follicle-stimulating hormone on sperm quality and pregnancy rate
No full textAim: To evaluate the possible links between ultrastructural sperm quality and the clinical pregnancy rate in infertile males treated with FSH before intracytoplasmic sperm injection (ICSI). Methods: Forty-four infertile males with idiopathic oligo-asthenozoospermia were randomly allocated to the treated (n=24) and non-treated (control, n=20) groups. Semen analysis was carried out by light and transmission electron microscopy (TEM) before and 12 weeks after FSH therapy. ICSI was performed in all couples. Results: TEM revealed a significant improvement in sperm quality after FSH treatment, particularly in men with their partners achieving clinical pregnancy. The pregnancy rate was 33% in the treated group and 20% in the control. Conclusion: Results highlight a positive role of FSH therapy in infertile males before ICSI, which was correlated with an increased pregnancy rate in treated couples. We believe that improved sperm ultrastructure after FSH therapy could positively influence the quality and early stage of embryo development, thereby increasing the probability of embryo implantation
Quantitative evaluation of spermatozoa ultrastructure after acupuncture treatment for idiopathic male infertility
No full textObjective: To evaluate the ultramorphologic sperm features of idiopathic infertile men after acupuncture therapy. Design: Prospective controlled study. Setting: Christian-Lauritzen-Institut, Ulm, IVF center Munich, Germany, and Department of General Biology, University of Siena, Siena, Italy. Patient(s): Forty men with idiopathic oligospermia, asthenospermia, or teratozoospermia. Intervention(s): Twenty eight of the patients received acupuncture twice a week over a period of 5 weeks. The samples from the treatment group were randomized with semen samples from the 12 men in the untreated control group. Main Outcome Measure(s): Quantitative analysis by transmission electron microscopy (TEM) was used to evaluate the samples, using the mathematical formula based on submicroscopic characteristics. Result(s): Statistical evaluation of the TEM data showed a statistically significant increase after acupuncture in the percentage and number of sperm without ultrastructural defects in the total ejaculates. A statistically significant improvement was detected in acrosome position and shape, nuclear shape, axonemal pattern and shape, and accessory fibers of sperm organelles. However, specific sperm pathologies in the form of apoptosis, immaturity, and necrosis showed no statistically significant changes between the control and treatment groups before and after treatment. Conclusion(s): The treatment of idiopathic male infertility could benefit from employing acupuncture. A general improvement of sperm quality, specifically in the ultrastructural integrity of spermatozoa, was seen after acupuncture, although we did not identify specific sperm pathologies that could be particularly sensitive to this therapy. ©2005 by American Society for Reproductive Medicine
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
Addition of Chlorogenic Acid to Human Semen: Effects on Sperm Motility, DNA Integrity, Oxidative Stress, and Nrf2 Expression
Full text linkThis study evaluated the effects of chlorogenic acid (CGA) on human semen and on oxidative stress (OS) induced in vitro in human spermatozoa. After the treatment of the basal semen with 100 mu M CGA, rapid and slow sperm progressive motility were evaluated and seminal F-2-Isoprostanes (F-2-IsoPs), a marker of OS, were quantified by ELISA. In a second set of experiments, semen was treated with 100 mu M CGA, 1 mM H2O2 to induce OS, or H2O2+CGA; untreated samples were used as controls. Then, sperm motility, DNA integrity by the acridine orange test, F-2-IsoPs and Nrf2 mRNA expression by RT-PCR were quantified. In CGA-treated specimens, rapid progressive sperm motility was increased (p < 0.01) and F-2-IsoP levels decreased (p < 0.001) versus controls. The increase of F-2-IsoP levels and DNA damage and the decrease of sperm motility after H2O2 treatment was reversed in the presence of CGA, which upregulated Nrf2 mRNA expression. These findings contributed to clarifying CGA's antioxidant activity and highlighted the positive impact of CGA on sperm progressive motility, suggesting also a possible mechanism of action based on the Nrf2 pathway. CGA can be useful during human semen handling procedures in the laboratory and in optimizing the recovery of motile spermatozoa through selection techniques during assisted reproductive technology protocols
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