197 research outputs found

    Anais do XXII Seminário de Formação de Professores para o MERCOSUL/ CONE SUL

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    1036 p. : tabs.Homenagem ao professor Augusto Nibaldo Silva TriviñosEvento realizado em Porto Alegre de 3 a 7 de novembro de 2014Apresentação: O XXII Seminário de Formação de Professores para o MERCOSUL/ CONE SUL, está concebido dentro da problemática geral do projeto intitulado “A formação de professores para o MERCOSUL/CONE SUL (Argentina, Bolívia, Brasil, Chile, Paraguai, Uruguai e Venezuela): princípios, objetivos e modalidades. Perspectivas de uma formação básica, comum, geral”, fundado em agosto de 1993, com sede na Universidade Federal do Rio Grande do Sul – UFRGS, no qual participam professores pesquisadores dos sete países mencionados. Os vinte e dois anos de existência refletidos em vida intelectual e em bases de amizade, de fraternidade, de respeito, de cooperação, de sentimentos coletivos, além do interesse individual, de Grupo, de Nação, antecipam a possibilidade de intercambiar idéias no XXII Seminário Internacional de Investigação sobre a Formação de Professores para o MERCOSUL/CONE SUL, com a temática central: Formação do Professor como Pesquisador da/para América Latina: Augusto Nibaldo Silva Triviños, a ser realizado na Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, de 03 a 07 de novembro de 2014. A realização do Seminário, organizado pelo Grupo brasileiro, permitirá projetar os possíveis próximos passos do Grupo, debater as pesquisas efetuadas, integrar os projetos sobre a Formação do Professor como Pesquisador, apresentar proposições, especialmente, para os sistemas educacionais do MERCOSUL/CONE SUL, além de divulgar e organizar, pelo menos, uma publicação em forma de livro. Os Seminários anteriores foram realizados anualmente e de modo alternado entre os países integrantes do grupo: Brasil (1993, 1994, 2002, 2006, 2009 e 2010), Chile (1995, 1998, 2003, 2005 e 2012), Argentina (1996, 2000, 2004, 2008 e 2013), Uruguai (1997, 2001 e 2011), Paraguai (1999) e Venezuela (2007). Tal Evento, para sua realização, depende do apoio das universidades nas quais os pesquisadores estão vinculados, das instituições participantes e dos organismos de fomento à pesquisa para consolidar a formação de professores e pesquisadores já realizada pelas instituições envolvidas, com possibilidade de divulgação para a sociedade brasileira, latino-americana e em particular do MERCOSUL/CONE SUL

    Cervical Mucus Properties Stratify Risk for Preterm Birth

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    Background: Ascending infection from the colonized vagina to the normally sterile intrauterine cavity is a well-documented cause of preterm birth. The primary physical barrier to microbial ascension is the cervical canal, which is filled with a dense and protective mucus plug. Despite its central role in separating the vaginal from the intrauterine tract, the barrier properties of cervical mucus have not been studied in preterm birth. Methods and Findings: To study the protective function of the cervical mucus in preterm birth we performed a pilot case-control study to measure the viscoelasticity and permeability properties of mucus obtained from pregnant women at high-risk and low-risk for preterm birth. Using extensional and shear rheology we found that cervical mucus from women at high-risk for preterm birth was more extensible and forms significantly weaker gels compared to cervical mucus from women at low-risk of preterm birth. Moreover, permeability measurements using fluorescent microbeads show that high-risk mucus was more permeable compared with low-risk mucus. Conclusions: Our findings suggest that critical biophysical barrier properties of cervical mucus in women at high-risk for preterm birth are compromised compared to women with healthy pregnancy. We hypothesize that impaired barrier properties of cervical mucus could contribute to increased rates of intrauterine infection seen in women with preterm birth. We furthermore suggest that a robust association of spinnbarkeit and preterm birth could be an effectively exploited biomarker for preterm birth prediction.Massachusetts Institute of Technology. Charles E. Reed Faculty Initiative FundBurroughs Wellcome Fund (Preterm Birth Research Grant)National Science Foundation (U.S.). Graduate Research Fellowship Progra

    Topical microbicides to prevent the transmission of HIV: formulation gaps and challenges

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    The efforts of the topical microbicide field to identify a safe and effective topical microbicide were realized in July of 2010 with the reporting of the results of the Centre for the AIDS Programme of Research in South Africa 004 trial. In this trial, a 1% tenofovir gel was found to reduce women’s risk for HIV acquisition by 39% compared to placebo. To understand the impact of this trial on future microbicide development, we must view it from the historical perspective of previous phases 2 and 3 clinical trials with detergents and sulfated polyanions. This knowledge and emerging information must then be parlayed into the next steps needed to create a safe, effective, and acceptable topical microbicide. This review will look at the lessons learned from preclinical and clinical development of topical microbicides, focusing on two significant future challenges: (1) topical microbicide formulation safety and (2) the critical role that adherence to product use has in determining safety and efficacy in clinical trials and ultimately commercial viability of the licensed product. In addition to framing these issues within our current understanding of formulation and prevention of HIV acquisition, recent advances in our understanding of the mechanism of HIV transmission and how it informs on future formulation strategies will be briefly discussed

    ParaVR: A Virtual Reality Training Simulator for Paramedic Skills maintenance

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    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Paramedic Practice, copyright © MA Healthcare, after peer review and technical editing by the publisher. To access the final edited and published work see https://www.paramedicpractice.com/features/article/paravr-a-virtual-reality-training-simulator-for-paramedic-skills-maintenance.Background, Virtual Reality (VR) technology is emerging as a powerful educational tool which is used in medical training and has potential benefits for paramedic practice education. Aim The aim of this paper is to report development of ParaVR, which utilises VR to address skills maintenance for paramedics. Methods Computer scientists at the University of Chester and the Welsh Ambulance Services NHS Trust (WAST) developed ParaVR in four stages: 1. Identifying requirements and specifications 2. Alpha version development, 3. Beta version development 4. Management: Development of software, further funding and commercialisation. Results Needle Cricothyrotomy and Needle Thoracostomy emerged as candidates for the prototype ParaVR. The Oculus Rift head mounted display (HMD) combined with Novint Falcon haptic device was used, and a virtual environment crafted using 3D modelling software, ported (a computing term meaning transfer (software) from one system or machine to another) onto Oculus Go and Google cardboard VR platform. Conclusion VR is an emerging educational tool with the potential to enhance paramedic skills development and maintenance. The ParaVR program is the first step in our development, testing, and scaling up of this technology

    Methane production in ruminant animals

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    Agriculture is a significant source of GHGs globally and ruminant livestock animals are one of the largest contributors to these emissions, responsible for an estimated 14% of GHGs (CH4 and N2O combined) worldwide. A large portion of GHG fluxes from agricultural activities is related to CH4 emissions from ruminants. Both direct and indirect methods are available. Direct methods include enclosure techniques, artificial (e.g. SF6) or natural (e.g. CO2) tracer techniques, and micrometeorological methods using open-path lasers. Under the indirect methods, emission mechanisms are understood, where the CH4 emission potential is estimated based on the substrate characteristics and the digestibility (i.e. from volatile fatty acids). These approximate methods are useful if no direct measurement is possible. The different systems used to quantify these emission potentials are presented in this chapter. Also, CH4 from animal waste (slurry, urine, dung) is an important source: methods pertaining to measuring GHG potential from these sources are included

    Exploration of Shared Genetic Architecture Between Subcortical Brain Volumes and Anorexia Nervosa

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    In MRI scans of patients with anorexia nervosa (AN), reductions in brain volume are often apparent. However, it is unknown whether such brain abnormalities are influenced by genetic determinants that partially overlap with those underlying AN. Here, we used a battery of methods (LD score regression, genetic risk scores, sign test, SNP effect concordance analysis, and Mendelian randomization) to investigate the genetic covariation between subcortical brain volumes and risk for AN based on summary measures retrieved from genome-wide association studies of regional brain volumes (ENIGMA consortium, n = 13,170) and genetic risk for AN (PGC-ED consortium, n = 14,477). Genetic correlations ranged from − 0.10 to 0.23 (all p > 0.05). There were some signs of an inverse concordance between greater thalamus volume and risk for AN (permuted p = 0.009, 95% CI: [0.005, 0.017]). A genetic variant in the vicinity of ZW10, a gene involved in cell division, and neurotransmitter and immune system relevant genes, in particular DRD2, was significantly associated with AN only after conditioning on its association with caudate volume (pFDR = 0.025). Another genetic variant linked to LRRC4C, important in axonal and synaptic development, reached significance after conditioning on hippocampal volume (pFDR = 0.021). In this comprehensive set of analyses and based on the largest available sample sizes to date, there was weak evidence for associations between risk for AN and risk for abnormal subcortical brain volumes at a global level (that is, common variant genetic architecture), but suggestive evidence for effects of single genetic markers. Highly powered multimodal brain- and disorder-related genome-wide studies are needed to further dissect the shared genetic influences on brain structure and risk for AN
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