Melhoria no processo de trefilação de cobre : estudo de caso na indústria metalurgica

Orientador : Pedro José SteinerProjeto (especialização) - Universidade Federal do Paraná, Setor de Ciências Sociais Aplicadas. Curso de Especialização MBA em Gestão da QualidadeInclui referênciasResumo : Projeto técnico (especialização) - Universidade Federal do Paraná, Setor de Ciências Sociais Aplicadas. Curso de Especialização em Gestão da Qualidade

'Niagara Rosada' grapevine yield under defoliation

O objetivo deste trabalho foi verificar o efeito da perda da área foliar da videira, no período compreendido entre a colheita e a queda natural das folhas, sobre o rendimento das safras futuras. Após colheita realizada em 15-12-2005, selecionaram-se plantas que apresentavam oito ramos de produção. Os tratamentos constituíram-se de plantas com duas intensidades de desfolhas artificiais (25% e 50%), em quatro datas distintas (30; 45; 60 e 75 dias após a colheita - DAC), plantas sem redução artificial da área foliar, com proteção química (controle) e plantas sem redução artificial da área foliar e sem proteção química (testemunha). Dois ciclos de produção foram avaliados: ciclo da poda seca de julho/2006 com colheita em dezembro/2006 e ciclo da poda verde de fevereiro/2007 com colheita em junho/2007. Analisaram-se o crescimento de ramos, o número de cachos por planta e o rendimento (kg/planta) para os dois ciclos. Análises de regressão foram realizadas para as diferentes intensidades de redução de área foliar. A intensidade de desfolha após a colheita reduz o rendimento dos ciclos de produção futuros, porém não influencia no crescimento de ramos e no número de cachos produzidos na safra subsequente à redução da área foliar. O rendimento da safra da poda seca é maior do que a da poda verde.The objective of this work was verify the effect of defoliation in 'Niagara Rosada' grapevine between harvest and natural leaf fall period make influence on yield to next cycle. After harvest, December-2005, there were selected plants with eight production branches. The treatments were represented by plants under two artificial defoliation intensity (25% and 50%) in four dates after harvest (30, 45 60 and 75), plants without artificial defoliation under chemical protection and plants without defoliation and without chemical protection. Two production cycles were appraised: dry pruning, from July-2006 until December-2006 (harvest) and green pruning, from February-2007 until June-2007 (harvest). Shots growth, number of bunches per plant and yield (kg.plant-1) were analyzed in both cycles. The regression analyses were done considering the intensity of defoliation. The intensity of defoliation after harvest reduces future yield for next cycles, however it does not show influence on shots growth and to the number of bunches per plant. Dry pruning yield was bigger than green pruning yiel

A sudorese compensatória e sua correlação com os níveis de ressecção ganglionar na simpatectomia para hiperidrose : revisão de literatura / Compensatory sweating and its correlation with lymph node resection levels in sympathectomy for hyperhidrosis: literature review

Conceitua-se hiperidrose a produção excessiva de suor por hiperfunção das glândulas écrinas que fazem parte do sistema de regulação da termostase corporal. Classifica-se como primária ou secundária, focal ou generalizada. Há modalidades de tratamento cirúrgicos e não cirúrgicos que variam em eficácia terapêutica, duração do efeito, custo e efeitos colaterais. Atualmente a simpatectomia videotoracoscópica é considerada o tratamento de eleição pelos melhores resultados obtidos. Nota-se relação entre o número de gânglios ressecados e o nível de secção da cadeia simpática com a ocorrência de sudorese compensatória

Leitura de imagens no ensino de Ciências: formulação e circulação de sentidos

Este trabalho tem por finalidade discutir no âmbito da Análise de Discurso (escola francesa), perspectivas voltadas a leitura de imagem (fotográfica, artística,gráfica, etc) no ensino de Ciências. Percebe-se nas aulas de Ciências que aimagem pode ser lida de diferentes formas pelos estudantes. Suas possibilidadesde leitura no ensino de Ciênciasconfirma que a linguagem não é transparente.Nesse artigo, defendemos que a imagem se constitui em texto (unidade a níveldo imaginário) e discurso (efeitos de sentidos entre interlocutores). Portanto,ressaltamos a importância dos professores considerarem durante o planejamentode atividades relacionadas aleitura de imagem, que esse processo é bastantecomplexo e não linear, ou seja, a relação entre o sujeito-leitor e a imagem não énem direta, nem mecânica

Ressecção de Schwannoma Ancião Torácico por videotoracoscopia e cervicotomia: Thoracic Ancient Schwannoma Resection by videothoracoscopy and cervicotomy

É apresentado um caso clínico de Schwannoma Ancião. Está é uma entidade rara, benigna com origem nas células de Schwann da bainha neural. Pode ser encontrada principalmente na cabeça, pescoço, região toraco-lombar e sua evolução tende a ser favorável após remoção tumoral completa

Studying the Performance of Cognitive Models in Time Series Forecasting

Cognitive models have been paramount for modeling phenomena for which empirical data are unavailable, scarce, or only partially relevant. These approaches are based on methods dedicated to preparing experts and then to elicit their opinions about the variables that describe the phenomena under study. In time series forecasting exercises, elicitation processes seek to obtain accurate estimates, overcoming human heuristic biases, while being less time consuming. This paper aims to compare the performance of cognitive and mathematical time series predictors, regarding accuracy. The results are based on the comparison of predictors of the cognitive and mathematical models for several time series from the M3-Competition. From the results, one can see that cognitive models are, at least, as accurate as ARIMA models predictions

Tibiocalcaneal arthrodesis using an Ilizarov fixator

AbstractObjectiveTo evaluate the results of arthrodesis with Ilizarov fixator with tibiocalcaneana.MethodsWe studied 12 patients with a mean age of 35 years, and 9 (75%) men and 3 (25%) women, underwent arthrodesis tibiocalcaneana. The diagnosis in the preoperative talus infection. We used a modified surgical technique Reckling (6 patients) and the Ilizarov technique, modified by Catagni (6 patients). Patients were evaluated by the AOFAS scale research and patient satisfaction.ResultsUnion was achieved in 100% of cases. The mean time to healing was 6 months (range 4-12 months) and mean duration of external fixator removal was 9 months (range 4-13 months). Stretching was performed in 6 patients with an average of 4cm. The follow-up with Vancomycin lasted around 6 months. The average AOFAS score was 72.5 points (range 57 to 89 points). All patients were satisfied with the result.ConclusionDespite the small number of cases, arthrodesis tibiocalcaneana seemed to be a good solution for cases of complex pathologies of the talus, such as infection, resulting in bone healing, pain relief and patient satisfaction

MINI-CUTTINGS ROOTING OF Sequoia sempervirens AT DIFFERENT IBA CONCENTRATIONS AND CLONES

Sequoia is a species that provides large volumes of wood, is resistant to decomposition and has seedling production by mini-cutting as a viable alternative. The aim of this work was to evaluate the rooting of mini-cuttings of different clones of Sequoia sempervirens and subsequent use of different concentrations of IBA in clones with low adventitious rooting. Mini-cuttings of different clones were used, from clonal mini-garden. In the experiment with the growth regulator, different concentrations of IBA (from 0 mg L-1 to 3000 mg L-1) were used. The material was placed to be rooted in a mini-tunnels and evaluate at 90 days. All experiments were installed in a completely randomized design, with a subsequent evaluation of survival (%), mini-cuttings with calluses (%), mini-cuttings rooted (%) and number of roots (only in the experiment with different concentrations of IBA). In the first experiment, the survival of mini-cuttings was high (close to 95%) and rooting showed great variation among the clones (22.8 to 100%). In the second experiment, using clones that previously presented rooting less than 50%, submitted to IBA application, high survival (88.1 to 99.4%) was observed. The clones presented different responses among themselves, but with improve in the rooting using growth regulator

The Isotropic Fractionator as a Tool for Quantitative Analysis in Central Nervous System Diseases

One major aim in quantitative and translational neuroscience is to achieve a precise and fast neuronal counting method to work on high throughput scale to obtain reliable results.Here we tested the Isotropic Fractionator (IF) method for evaluating neuronal and non-neuronal cell loss in different models of central nervous system (CNS) pathologies.Sprague-Dawley rats underwent: (i) ischemic brain damage; (ii) intraperitoneal injection with kainic acid (KA) to induce epileptic seizures; and (iii) monolateral striatal injection with quinolinic acid (QA) mimicking human Hungtington’s disease.All specimens were processed for IF method and cell loss assessed.Hippocampus from KA-treated rats and striatum from QA-treated rats were carefully dissected using a dissection microscope and a rat brain matrix. Ischemic rat brains slices were first processed for TTC staining and then for IF.In the ischemic group the cell loss corresponded to the neuronal loss suggesting that hypoxia primarily affects neurons. Combining IF with TTC staining we could correlate the volume of lesion to the neuronal loss; by IF, we could assess that neuronal loss also occurs contralaterally to the ischemic side.In the epileptic group we observed a reduction of neuronal cells in treated rats, but also evaluated the changes in the number of non-neuronal cells in response to the hippocampal damage