950 research outputs found

    Por uma docĂȘncia menor: escritas e escritos na produção de um lugar chamado “professor”

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    This article seeks to know the teaching profession as an active process capable of creating ways to understand what happens in the experience of teachers and the inventiveness that goes beyond pre-established contents, pedagogical training or expected curricula. It is about minor teaching happening that, as in the minor literature thought by Deleuze and Guatarri (2003), is political and its value is made in what is pulsating in the forces and tensions of the collective. Like the monstrous insect that Gregor Samsa becomes in Kafka's novel, it is necessary to know this strange being that teachers become when they enter the classroom, this precarious being that takes up space in this minor place occupied by the so-called "teacher. In this way, it is in writing that it is possible to know how teaching is produced, since the impasses can be made, thought, discussed, re-territorialized from this production. The invitation, therefore, is to create beautiful, possible, thinking, and reflective stories from a minor teaching...Este artĂ­culo busca conocer la profesiĂłn docente como un proceso activo capaz de crear formas de entender lo que sucede en la experiencia de los profesores y la inventiva que va mĂĄs allĂĄ de los contenidos preestablecidos, la formaciĂłn pedagĂłgica o los planes de estudio esperados. Se trata del acontecer docente menor que, como en la literatura menor pensada por Deleuze y Guatarri (2003), es polĂ­tico y su valor se hace en lo que late en las fuerzas y tensiones de lo colectivo. Como en el insecto monstruoso en que se convierte Gregor Samsa en la novela de Kafka, es necesario conocer ese ser extraño en que se convierten los profesores cuando entran en el aula, ese precario que toma espacio en ese lugar menor que ocupa el llamado "profesor". AsĂ­, es en la escritura que es posible conocer cĂłmo se produce la enseñanza, ya que los impasses pueden ser hechos, pensados, discutidos, re-territorializados a partir de esta producciĂłn. La invitaciĂłn, por lo tanto, es a crear relatos bellos, posibles, pensados y reflexivos a partir de una enseñanza menor...O presente artigo busca conhecer o ofĂ­cio docente como um processo ativo capaz de criar caminhos para a compreensĂŁo do que se passa na experiencia de professoras e professores e das inventividades que vĂŁo alĂ©m de conteĂșdos prĂ©-estabelecidos, formaçÔes pedagĂłgicas ou currĂ­culos esperados. Trata-se de docĂȘncia menor acontecendo que, como na literatura menor pensada por Deleuze e Guatarri (2003), Ă© polĂ­tica e seu valor se faz no que estĂĄ pulsando nas forças e tensĂ”es do coletivo. Como no monstruoso inseto em que se transforma Gregor Samsa na novela de Kafka, Ă© preciso conhecer esse estranho ser que docentes se transformam ao entrarem em sala de aula, esse precĂĄrio que toma espaço nesse lugar menor ocupado pelo chamado “professor”. Dessa forma, Ă© na escrita que Ă© possĂ­vel conhecer como sĂŁo produzidas docĂȘncias, jĂĄ que os impasses podem ser feitos, pensados, discutidos, reterritorializados a partir dessa produção. O convite, portanto, Ă© para criação de histĂłrias bonitas, possĂ­veis, pensantes e reflexivas a partir de uma docĂȘncia menor..

    Cartografia e pesquisas com os cotidianos: um encontro metodolĂłgico

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    Esse artigo objetiva criar diĂĄlogos e possĂ­veis encontros entre os mĂ©todos de pesquisa dos estudos dos cotidianos e da cartografia. Isso se fez a partir da experiĂȘncia de duas pesquisas intituladas “Homens trans(bordados): experiĂȘncias juntas e misturadas na produção de outras masculinidades” e “GĂȘnero e sexualidades em cartaz na formação de professores/a”. Com esses estudos foi possĂ­vel vislumbrar que outros modos de pesquisar sĂŁo possĂ­veis e precisam ser construĂ­dos para alĂ©m do paradigma cientĂ­fico da racionalidade. Por fim, concluĂ­mos que o mĂ©todo cartogrĂĄfico e do cotidiano possuem encontros nas seguintes dimensĂ”es: sujeito/objeto; neutralidade/objetividade e critĂ©rio de verdade

    Blood Parameters of Lactating Cows Fed Calcium Salts as Energetic Source

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    Background: The negative energetic balance of lactating cows that occurs during the few weeks postpartum shifts the hormonal profile of the animal. These alterations may lead to metabolic disturbance as ketosis and lipid infiltration. Hypocalcemia is another metabolic problem that occurs in the peripartum period, it is characterized by the reduction in blood levels of calcium (Ca2+) near birth. Blood parameters illustrates the nutritional status of milking cows. The serum levels of glucose, ÎČ-hydroxybutyrate (BHB) and cholesterol are parameters that reveal liver condition and it is very important for the metabolism of milking cows. The objective of this study was to evaluate three additives in the form of a calcium salts on blood parameters of lactating cows.Materials, Methods & Results: Two Latin square 4x4 were used, whereas one comprehended of early lactation cows and the other of mid lactation cows. Animals of 2nd and 3rd parity were used only. Parity was distributed evenly among groups. The trial consisted of 4 groups with 4 treatments as follow: T1: 300 g of calcium acetate, T2: 200 g of calcium propionate, T3: 200 g of calcium salts of fatty acids, and T4: control without any calcium additive. Blood samples were collected for analysis of serial calcium, glucose, ÎČ-hydroxybutyrate (BHBA) and cholesterol. The calcium levels were higher in T1 than T3 in early lactation. There was no significant difference of glucose levels between groups. Groups T1 and T2 had lower amounts of BHBA. Cholesterol was higher in T3 and T1 in the early lactation and just in T3 was higher in the mid lactation.Discussion: Adjust the Ca2+ flow due to high feed consumption and milk production near birth is a big challenge for milking cows due to the difficulties to maintain normal serial levels of Ca2+ in the early lactation. The lower serial levels of Ca2+ in the group supplemented with calcium salts of fatty acids is due to its physical characteristics that reduces its effects on ruminal microbiota and also reduced absorption of fatty acids in intestine. The evaluation of total cholesterol can be a parameter to judge the productive capacity of milking cows, because it demonstrates the capacity of corporal fat mobilization and ingestion of energy to produce milk. An increase of total cholesterol in cows supplemented with calcium salts of fatty acids is justified by the higher intake of fatty acids in the feed containing fat, which leads to a greater lipid metabolism in blood. As the literature has limited information about calcium acetate, it is believed that the animals supplemented with calcium acetate showed higher levels of cholesterol because the acetate is converted to Acetyl coenzime A, it is the basis for cholesterol biosynthesis in lactating cows. The BHBA can be considered as an indicator of negative energetic balance due to its correlation between energetic demand and energy reserves. As propionate is produced by ruminal fermentation and is the principal source for gluconeogenesis in peripartum cows, it lowered level of BHBA in the propionate supplemented group. The acetate availability is fundamental to attend the energetic requirements of lactating cows. The acetate enters in the synthesis of fatty acids as Acetyl coenzyme-A or enters in Krebs cycle through condensation with oxaloacetate, this explains the lower serial levels of BHB in group T1. It was concluded that T1 and T2 lowered the values of BHBA in early lactation cows and the animals supplemented with calcium salts of fatty acids and calcium acetate shower higher levels of cholesterol in early lactation and the T3 group in the mid lactation

    Melanoma maligno da prĂłstata primĂĄria : Malignant melanoma of the primary prostate

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    Introdução: Descreve-se um caso de melanoma maligno da prĂłstata primĂĄrio. SerĂĄ possĂ­vel compreender que a prĂłstata Ă© um local raro de se encontrar um melanoma maligno primĂĄrio e que devido a sua infrequĂȘncia, possui um prognĂłstico ruim e um difĂ­cil diagnĂłstico. Apresentação do caso: Paciente do sexo masculino, 47 anos, solteiro, negro, motorista de caminhĂŁo, compareceu a UBS com queixa de jato urinĂĄrio fraco, nocturia e hematoespermia, 3 episĂłdios, inĂ­cio hĂĄ um ano. DiscussĂŁo:  Grande parte dos casos relatados, sĂŁo de origem do epitĂ©lio de transição da uretra prostĂĄtica ou de uma lesĂŁo metastĂĄtica.  Essa patologia possui um comportamento altamente agressivo e deve receber grande atenção. Devido a sua infrequĂȘncia, Ă© de difĂ­cil diagnĂłstico e tratamento. O tratamento indicado Ă© a excisĂŁo, se o paciente nĂŁo tiver doença sistĂȘmica. ConclusĂŁo: o conhecimento dessa patologia e sua suspeição devem ser melhor propagados no meio cientĂ­fico, para que haja o diagnĂłstico e posterior tratamento mais precocemente possĂ­vel, objetivando melhores prognĂłsticos

    Doença de Erdheim Chester com envolvimento isolado do SNC: Erdheim Chester disease with isolated CNS involvement

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    Introdução: A Doença de Erdheim-Chester Ă©  uma forma de  histiocitose  de  cĂ©lulas  nĂŁo-Langerhans  que  ocorre  mais  frequentemente  apĂłs  os  40  anos  de  idade,  com leve  predomĂ­nio  no  sexo  masculino. Apresentação do caso: Paciente, sexo masculino, branco, X anos de idade, admitido no Hospital das ClĂ­nicas de GoiĂąnia, com sintomas de cefalĂ©ia crĂŽnica, de carĂĄter progressivo de inicio hĂĄ 3 meses, associados a sintomas neurolĂłgicos de ataxia e diplopia. Referiu febre baixa diĂĄria, nĂŁo aferida, com perda de 10kg no perĂ­odo descrito, nĂŁo associado a dieta ou mudança de hĂĄbitos de vida. Nega comorbidades ou uso de medicamentos.  Ao exame fĂ­sico, apresenta quadro de Nistagmo e Romberg positivo e alteração da Ășvula para direita. Paciente nĂŁo apresentava outros sinais dignos de nota. DiscussĂŁo: Foram selecionados para a revisĂŁo, os artigos de relato de caso ou sĂ©ries de caso relacionados a manifestaçÔes clĂ­nicas da doença de Erdheim-Chester. Os principais tipos manifestaçÔes clĂ­nicas relatadas na literatura sĂŁo: neurolĂłgicas, cardiovasculares, oftĂĄlmicas, endĂłcrinas, urinĂĄrias, hematolĂłgicas, Ăłsseas, cutĂąneas, respiratĂłrias, gastrointestinais, envolvimento de mĂșltiplos sistemas e outras. Entre esses tipos de manifestaçÔes, as mais frequentes foram neurolĂłgicas, cardiovasculares e oftĂĄlmicas, correspondendo a 48% das manifestaçÔes relatadas. ConclusĂŁo: É fundamental ter uma equipe multidisciplinar acompanhando o paciente,  para que sejam evitadas complicaçÔes e se possa proporcionar qualidade de vida ao paciente. &nbsp

    Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

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    Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (Ό̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ÂŻ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ÂŻ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),Ό̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

    MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

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    Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe

    Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at root s=13 TeV

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    A search is presented for new particles produced at the LHC in proton-proton collisions at root s = 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis is based on a data sample corresponding to an integrated luminosity of 101 fb(-1), collected in 2017-2018 with the CMS detector. Machine learning techniques are used to define separate categories for events with narrow jets from initial-state radiation and events with large-radius jets consistent with a hadronic decay of a W or Z boson. A statistical combination is made with an earlier search based on a data sample of 36 fb(-1), collected in 2016. No significant excess of events is observed with respect to the standard model background expectation determined from control samples in data. The results are interpreted in terms of limits on the branching fraction of an invisible decay of the Higgs boson, as well as constraints on simplified models of dark matter, on first-generation scalar leptoquarks decaying to quarks and neutrinos, and on models with large extra dimensions. Several of the new limits, specifically for spin-1 dark matter mediators, pseudoscalar mediators, colored mediators, and leptoquarks, are the most restrictive to date.Peer reviewe

    Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

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    The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe
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