98 research outputs found

    Marginalia figurata y signos de atención en los manuscritos de la Antica Vulgata

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    [ES] Se trata de un estudio sobre los marginalia contenidos en los manuscritos de la «Antica Vulgata» de la Comedia de Dante Alighieri, cuya finalidad es reflexionar acerca de la recepción del texto dantesco en sus primeros años de difusión

    Roller Speed Skating Kinematics and Electromyographic Analysis: A Methodological Approach

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    Roller speed skating is a discipline similar to hockey and ice skating from a biomechanical point of view, but there are no specific functional protocols for rehabilitation and performance improvement for these athletes. The aim of the study is to create a dedicated functional, kinematic and electromyographic protocol to be used as a tool for future studies on the subject. The protocol was created, starting from a correct and repeatable movement as a case study, on a world speed skating champion, using an inertial sensor positioned at the level of the first sacral vertebra, eight electromyographic probes positioned on one or the other lower limb, and a high-definition camera at 50 Hz. The results show the electromyographic activity of the muscles investigated, the degree of absolute muscle activation and compared to their maximum voluntary isometric contraction (MVIC), the level of co-activation of the agonist/antagonist muscles, and the accelerations of the body on the three axes of space. The results will represent the basis for physiotherapy and specific training use. Future developments will include the analysis of a sample of elite athletes to be able to build a normal range on the parameters investigated, and the possibility of treating in the most appropriate way possible muscle injuries (which mostly occur in the groin in such athletes) once they have occurred, even with oriented MVIC or co-activation oriented exercises

    STUDY ON THE CORRELATION BETWEEN SELF-ESTEEM, COPING AND CLINICAL SYMPTOMS IN A GROUP OF YOUNG ADULTS: A BRIEF REPORT

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    The aim of this research is to analyze how the experiences and representations of self-esteem correlate with clinical symptoms, as well as specific non-functional coping strategies in order to overcome difficulties in the development of autonomy and decision-making.Data show that the coping resources of individuals are directed more towards the Self than towards the social, sometimes even in terms of preoccupation with the Self and social isolation. Low self-esteem has correlations with somatization. It is especially in the female gender and is related to an image of Self that is not positive

    Tutoramento entre pares e integração universitária da deficiência

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    O estudo analisa a relação entre tutor e tutorado com deficiências no contexto universitário. A hipótese de pesquisa é que o método do tutoramento entre pares poderá facilitar a integração dos estudantes universitários com deficiências e que a compartilha dos problemas e as paritárias condições de partida do tutor e do tutorado ajude os mútuos processos de socialização. Vinte tutores preencheram um questionário elaborado ad hoc, e o corpus narrativo foi submetido a uma análise textual. Os resultados evidenciam o fato do peer tutoring ser uma metodologia idônea para o desenvolvimento de uma mútua relação de competências, no âmbito de uma relação afetiva e simétrica; isso permite ultrapassar a perspetiva assistencial relativa à deficiência, incita o tutorado a “ultrapassar a si próprio”, facilitando a sua aprendizagem e assim ativando a sua “zona de desenvolvimento proximal”

    Deep HST imaging surveys and the formation of spheroidal galaxies

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    We have extended our previous analysis of morphologically selected elliptical and S0 galaxies in the Hubble Deep Field (HDF) North to include HST data in the HDF South and the HDFS-NICMOS areas. Our final sample amounts to 69 E/S0 galaxies with K<20.15K<20.15 over an area of 11 square arcmins. Although a moderately small number over a modest sky area, this sample benefits of the best imaging and photometric data available on high-redshift galaxies. Multi-waveband photometry allows us to estimate with good accuracy the redshifts for the majority of these galaxies which lack a spectroscopic measure. We confirm our previous findings that massive E/S0s tend to disappear from flux-limited samples at z>1.4z>1.4. This adds to the evidence that the rest-frame colours and SEDs of the numerous objects found at 0.8<z<1.20.8<z<1.2 are inconsistent with a very high redshift of formation for the bulk of stars, while they are better consistent with protracted (either continuous or episodic) star-formation down to z1z \le 1. These results based on high-quality imaging on a small field can be complemented with data from colour-selected EROs on much larger sky areas: our claimed demise of E/S0s going from z=1z=1 to z=1.5z=1.5 is paralleled by a similarly fast decrease in the areal density of EROs when the colour limit is changed from (RK)=5(R-K)=5 to (RK)=6(R-K)=6 (corresponding to z1z\simeq 1 and z1.3z\simeq 1.3 respectively). Altogether, the redshift interval from 1 to 2 seems to correspond to a very active phase for the assembly of massive E/S0 galaxies in the field, and also probably one where a substantial fraction of their stars are formed.Comment: 9 pages, 7 figures -- Version accepted by MNRA

    perceived social support and clinical symptomatology in italian university students

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    Social support can influence the perceptions of individual and social well-being for university students. We sought to verify whether the perceptions of social support correlate with the manifestation of clinical symptoms in young university students. A total of 26 participants, 58% female and 42% male, between the ages of 19 and 27 were included. The following tests were administered: SCL-90-R – scale for the self-evaluation of general psychopathology and MSPSS – self-assessment scale for the perception of social support. The students who perceived low levels of social support had high levels of clinical symptomatology (especially for internalised disorders). The index for a high intensity of symptoms Positive Symptom Total is correlated with a low level of perceived social support. Keywords: Clinical symptomatology, perceived social support, university students

    Modifications of Chest CT Body Composition Parameters at Three and Six Months after Severe COVID-19 Pneumonia: A Retrospective Cohort Study

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    We aimed to describe body composition changes up to 6-7 months after severe COVID-19 and to evaluate their association with COVID-19 inflammatory burden, described by the integral of the C-reactive protein (CRP) curve. The pectoral muscle area (PMA) and density (PMD), liver-to-spleen (L/S) ratio, and total, visceral, and intermuscular adipose tissue areas (TAT, VAT, and IMAT) were measured at baseline (T0), 2-3 months (T1), and 6-7 months (T2) follow-up CT scans of severe COVID-19 pneumonia survivors. Among the 208 included patients (mean age 65.6 ± 11 years, 31.3% females), decreases in PMA [mean (95%CI) -1.11 (-1.72; -0.51) cm2] and in body fat areas were observed [-3.13 (-10.79; +4.52) cm2 for TAT], larger from T0 to T1 than from T1 to T2. PMD increased only from T1 to T2 [+3.07 (+2.08; +4.06) HU]. Mean decreases were more evident for VAT [-3.55 (-4.94; -2.17) cm2] and steatosis [L/S ratio increase +0.17 (+0.13; +0.20)] than for TAT. In multivariable models adjusted by age, sex, and baseline TAT, increasing the CRP interval was associated with greater PMA reductions, smaller PMD increases, and greater VAT and steatosis decreases, but it was not associated with TAT decreases. In conclusion, muscle loss and fat loss (more apparent in visceral compartments) continue until 6-7 months after COVID-19. The inflammatory burden is associated with skeletal muscle loss and visceral/liver fat loss

    Fully Immunocompetent CD8+ T Lymphocytes Are Present in Autologous Haematopoietic Stem Cell Transplantation Recipients Despite an Ineffectual T-Helper Response

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    BACKGROUND: Reduced CD4 T lymphocytes counts can be observed in HIV infection and in patients undergoing autologous haematopoietic stem cell transplantation (ASCT). Nevertheless, whereas opportunistic infections (OI) are frequent in HIV-infected individuals with low cell counts, OI are uncommon in ASCT patients. METHODOLOGY/PRINCIPAL FINDINGS: To verify whether this observation could be secondary to intrinsic HIV-correlated T cell defects, we performed in-depth immunologic analyses in 10 patients with comparable CD4 counts in whom lymphopenia was secondary either to HIV-infection or ASCT-associated immunosuppressive therapy and compared them to age-matched healthy subjects. Results showed the presence of profound alterations in CD4+ T lymphocytes in both groups of patients with respect to healthy controls. Thus, a low percentage of CCR7+ CD4+ T cells and a compensative expansion of CD45RA-CCR7- CD4+ T cells, a reduced IL-2/IFN-gamma cytokine production and impaired recall antigens-specific proliferative responses were detected both in ASCT and HIV patients. In stark contrast, profound differences were detected in CD8+ T-cells between the two groups of patients. Thus, mature CD8+ T cell prevailed in ASCT patients in whom significantly lower CD45RA-CCR7- cells, higher CD45RA+CCR7- CD8+ cells, and an expansion of CCR7+CD8+ cells was detected; this resulted in higher IFN-gamma +/TNFalpha production and granzyme CD8+ expression. The presence of strong CD8 T cells mediated immune responses justifies the more favorable clinical outcome of ASCT compared to HIV patients. CONCLUSION/SIGNIFICANCE: These results indicate that CD8 T cells maturation and functions can be observed even in the face of a profound impairment of CD4+ T lymphocytes in ASCT but not in HIV patients. Primary HIV-associated CD8 defects or an imprinting by an intact CD4 T cell system in ASCT could justify these results
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