103 research outputs found
Health Reform and its Impact on Workers in this Sector: the Case of the National Clinical Hospital in Cordoba, Argentina
Objectives: To analyze the changes produced after neo-liberal reforms in public services in Argentinean structure and organization of the work, as well as its effect on labor and social relations in the National Clinical Hospital
Valorizzazione del patrimonio informativo ai fini della valutazione ambientale delle politiche in Regione Piemonte
La reforma de la salud y su impacto en los trabajadores del sector: el caso Hospital Nacional de Clínicas de Córdoba, Argentina
Objetivos: Analizar los cambios producidos, a partir de las reformas neoliberales de los servicios públicos de salud en Argentina, tanto en la forma y organización del trabajo, como en sus efectos sobre las relaciones laborales y sociales en el Hospital Nacional de Clínicas
Valorizzazione del patrimonio informativo ai fini della valutazione ambientale delle politiche in Regione Piemonte
Holographic non-perturbative corrections to gauge couplings
We give a direct microscopic derivation of the F-theory background that
corresponds to four D7 branes of type I' theory by taking into account the
D-instanton contributions to the emission of the axio-dilaton field in the
directions transverse to the D7's. The couplings of the axio-dilaton to the
D-instanton moduli modify its classical source terms which are shown to be
proportional to the elements of the D7 brane chiral ring. Solving the bulk
field equations with the non-perturbatively corrected sources yields the full
F-theory background. This solution represents the gravitational dual of the
four-dimensional theory living on a probe D3 brane of type I', namely of the
N=2, Sp(1) SYM theory with Nf=4. Our results provide an explicit microscopic
derivation of the non-perturbative gravitational dual of this theory. They also
explain the recent observation that the exact coupling for this theory can be
entirely reconstructed from its perturbative part plus the knowledge of the
chiral ring on the D7 branes supporting its flavor degrees of freedom.Comment: Latex, 39 pages, 6 figure
Non-perturbative gauge/gravity correspondence in N=2 theories
We derive the exact supergravity profile for the twisted scalar field emitted
by a system of fractional D3 branes at a Z2 orbifold singularity supporting N=2
quiver gauge theories with unitary groups and bifundamental matter. At the
perturbative level this twisted field is "dual" to the gauge coupling but it is
corrected non-perturbatively by an infinite tower of fractional D-instantons.
The explicit microscopic description allows to derive the gravity profile from
disk amplitudes computing the emission rate of the twisted scalar field in
terms of chiral correlators in the dual gauge theory. We compute these quantum
correlators using multi-instanton localization techniques and/or Seiberg-Witten
analysis. Finally, we discuss a non-perturbative relation between the twisted
scalar and the effective coupling of the gauge theory for some simple choices
of the brane set ups.Comment: 42 pages. 3 figures, PDFLaTe
Reduced Seminal Concentration of CD45pos Cells after Follicle-Stimulating Hormone Treatment in Selected Patients with Idiopathic Oligoasthenoteratozoospermia
The present study evaluated the conventional sperm parameters and the seminal concentration of CD45pos cells (pan-leukocyte marker) of infertile patients with idiopathic oligoasthenoteratozoospermia (OAT). The patients were arbitrarily divided into three groups treated with recombinant follicle-stimulating hormone FSH: α (Group A = 20 patients), recombinant FSH-β (Group B = 20 patients), and highly purified human FSH (Group C = 14 patients). All treated groups achieved a similar improvement of the main sperm parameters (density, progressive motility, and morphology), but only the increase in the percentage of spermatozoa with normal morphology was significant compared to the baseline in all three examined groups. Moreover, all groups had a significant reduction of the seminal concentration of CD45pos cells and of the percentage of immature germ cells. Before and after the treatment, the concentration of CD45pos cells showed a positive linear correlation with the percentage of immature germ cells and a negative correlation with the percentage of spermatozoa with regular morphology. These results demonstrate that treatment with FSH is effective in patients with idiopathic OAT and that there are no significant differences between the different preparations. The novelty of this study is in the significant reduction of the concentration of CD45pos cells observed after the treatment
Estudos de Ecologia Humana entre os Suruí do parque indígena Aripuanã, Rondônia: 1. O uso de larvas de Coleópteros (Bruchidae e Curculionidae) na alimentação
Simple Parameters from Complete Blood Count Predict In-Hospital Mortality in COVID-19
The clinical course of Coronavirus Disease 2019 (COVID-19) is highly heterogenous, ranging from asymptomatic to fatal forms. The identification of clinical and laboratory predictors of poor prognosis may assist clinicians in monitoring strategies and therapeutic decisions
Controversy and consensus on indications for sperm DNA fragmentation testing in male infertility: a global survey, current guidelines, and expert recommendations.
PURPOSE: Sperm DNA fragmentation (SDF) testing was recently added to the sixth edition of the World Health Organization laboratory manual for the examination and processing of human semen. Many conditions and risk factors have been associated with elevated SDF; therefore, it is important to identify the population of infertile men who might benefit from this test. The purpose of this study was to investigate global practices related to indications for SDF testing, compare the relevant professional society guideline recommendations, and provide expert recommendations. MATERIALS AND METHODS: Clinicians managing male infertility were invited to take part in a global online survey on SDF clinical practices. This was conducted following the CHERRIES checklist criteria. The responses were compared to professional society guideline recommendations related to SDF and the appropriate available evidence. Expert recommendations on indications for SDF testing were then formulated, and the Delphi method was used to reach consensus. RESULTS: The survey was completed by 436 experts from 55 countries. Almost 75% of respondents test for SDF in all or some men with unexplained or idiopathic infertility, 39% order it routinely in the work-up of recurrent pregnancy loss (RPL), and 62.2% investigate SDF in smokers. While 47% of reproductive urologists test SDF to support the decision for varicocele repair surgery when conventional semen parameters are normal, significantly fewer general urologists (23%; p=0.008) do the same. Nearly 70% would assess SDF before assisted reproductive technologies (ART), either always or for certain conditions. Recurrent ART failure is a common indication for SDF testing. Very few society recommendations were found regarding SDF testing. CONCLUSIONS: This article presents the largest global survey on the indications for SDF testing in infertile men, and demonstrates diverse practices. Furthermore, it highlights the paucity of professional society guideline recommendations. Expert recommendations are proposed to help guide clinicians
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