44 research outputs found

    Uma reverberação do ideário britânico no Brasil: o Green-Belt de Maringá e o Green-Wedge de Cianorte / A reverberation of British ideas in Brazil: the greenbelt of Maringá and the green wedge of Cianorte

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    Esta pesquisa investigou o desenho e a implantação de Green-Belts nas cidades de Maringá e Cianorte, onde observar-se a reverberação do planejamento britânico e do ideário de Cidade-Jardim no Norte do Estado do Paraná, em meados do século XX, aplicado por meio do Plano de Colonização executado pela Companhia de Terras Norte do Paraná. Sob a análise dos planos urbanísticos desenvolvidos por Jorge de Macedo Vieira para estas cidades e do processo inicial de implantação das mesmas, verificou-se que em Maringá houve a tentativa de implantação de um cinturão verde no formato de um anel de pequenas propriedades rurais, enquanto em Cianorte a ideia foi implantada com a preservação de um cinturão de mata nativa que circunda adentra o espaço urbano, identificado como um Green-Wedge

    Os casos Mariana e Brumadinho: análise crítica dos aspectos trabalhistas e previdenciários dos grandes acidentes de trabalho

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    Partindo da compreensão geral do sistema jurídico-ambiental e de suas aplicações ao direito do trabalho, este artigo abordará as grandes tragédias trabalhistas, sociais e ambientais ocorridas recentemente em Minas Gerais, com os rompimentos das barragens de rejeitos de mineração em Mariana e Brumadinho, buscando contextualizá-los como uma problemática que necessita ser compreendida sob o seguinte itinerário metodológico: contextualizar as tragédias enquanto grandes acidentes de trabalho, promovendo uma análise crítica dos seus aspectos trabalhistas e previdenciários. Serão analisados os detalhes destes dois casos, considerados os mais paradigmáticos entre aqueles julgados pela Justiça do Trabalho em matéria de direito ambiental do trabalho, promovendo uma abordagem cuidadosa dos fatos e da tramitação processual destas ações judiciais que tem como objeto os danos ambientais, sociais e coletivos do referido caso, concluindo pela afirmação dos direito humanos ao meio ambiente do trabalho seguro e saudável, bem como alerta para a observância das regras tutelares quanto àquele tema. Para a realização da pesquisa, foi adotado o método dedutivo como método de abordagem e a técnica de pesquisa bibliográfica como método de procedimento, com base na doutrina e na legislação pertinentes à matéria

    Biochemical characterization, thermal stability, and partial sequence of a novel exo-polygalacturonase from the thermophilic fungus Rhizomucor pusillus a13.36 obtained by submerged cultivation

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    Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)This work reports the production of an exo-polygalacturonase (exo-PG) by Rhizomucor pusillus A13.36 in submerged cultivation (SmC) in a shaker at 45 degrees C for 96 h. A single pectinase was found and purified in order to analyze its thermal stability, by salt precipitation and hydrophobic interaction chromatography. The pectinase has an estimated Mw of approximately 43.5-47 kDa and optimum pH of 4.0 but is stable in pH ranging from 3.5 to 9.5 and has an optimum temperature of 61 degrees C. It presents thermal stability between 30 and 60 degrees C, has 70% activation in the presence of Ca2+, and was tested using citrus pectin with a degree of methyl esterification (DE) of 26% E-a(d) for irreversible denaturation was 125.5 kJ/mol with positive variations of entropy and enthalpy for that and Delta G((d)) values were around 50 kJ/mol. The hydrolysis of polygalacturonate was analyzed by capillary electrophoresis which displayed a pattern of sequential hydrolysis (exo). The partial identification of the primary sequence was done by MS MALDI-TOF and a comparison with data banks showed the highest identity of the sequenced fragments of exo-PG from R. pusillus with an exo-pectinase from Aspergillus fumigatus. Pectin hydrolysis showed a sigmoidal curve for the Michaelis-Menten plot.This work reports the production of an exo-polygalacturonase (exo-PG) by Rhizomucor pusillus A13.36 in submerged cultivation (SmC) in a shaker at 45 degrees C for 96 h. A single pectinase was found and purified in order to analyze its thermal stability, b2016110CAPES - COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIORCNQP - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)SEM INFORMAÇÃOSEM INFORMAÇÃO11/23991-710/12624-0This work was funded by CAPES, CNPq, and FAPESP (11/23991-7 and 10/12624-0).The authors thank the National Laboratory of Science and Technology of Bioethanol (CTBE), in Campinas, SP (Brazil), for mass spectrometry analysis and also Ms. Fatima Zapata fro

    A FÍSICA NO ENSINO FUNDAMENTAL TENDO A ASTRONOMIA COMO ORGANIZADOR PRÉVIO

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    O ensino de Física no fim do Ensino Fundamental normalmente se limita ao ensino de Matemática travestido de Cinemática. O estudo aqui relatado tentou romper esta situação ao apresentar a Física aos estudantes do fim do Ensino Fundamental auxiliado por um organizador prévio abordando questões que relacionavam Astronomia à sua cidade, seguidas de atividades potencialmente significativas.O projeto desenvolvido apresentou diversas contribuições, entre elas mudança de atitude da professora em relação ao ensino de física e ao aumento do IDEB nesta escola

    Characterization, Thermal Stability, and Partial Sequence of a Novel Exo-Polygalacturonase from the Thermophilic Fungus Rhizomucor pusillus A13.36 Obtained by Submerged Cultivation

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    This work reports the production of an exo-polygalacturonase (exo-PG) by Rhizomucor pusillus A13.36 in submerged cultivation (SmC) in a shaker at 45 ∘ C for 96 h. A single pectinase was found and purified in order to analyze its thermal stability, by salt precipitation and hydrophobic interaction chromatography. The pectinase has an estimated Mw of approximately 43.5-47 kDa and optimum pH of 4.0 but is stable in pH ranging from 3.5 to 9.5 and has an optimum temperature of 61 ∘ C. It presents thermal stability between 30 and 60 ∘ C, has 70% activation in the presence of Ca 2+ , and was tested using citrus pectin with a degree of methyl esterification (DE) of 26%. ( ) for irreversible denaturation was 125.5 kJ/mol with positive variations of entropy and enthalpy for that and Δ ( ) values were around 50 kJ/mol. The hydrolysis of polygalacturonate was analyzed by capillary electrophoresis which displayed a pattern of sequential hydrolysis (exo). The partial identification of the primary sequence was done by MS MALDI-TOF and a comparison with data banks showed the highest identity of the sequenced fragments of exo-PG from R. pusillus with an exo-pectinase from Aspergillus fumigatus. Pectin hydrolysis showed a sigmoidal curve for the Michaelis-Menten plot

    Time Course of the Involvement of the Right Anterior Superior Temporal Gyrus and the Right Fronto-Parietal Operculum in Emotional Prosody Perception

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    In verbal communication, not only the meaning of the words convey information, but also the tone of voice (prosody) conveys crucial information about the emotional state and intentions of others. In various studies right frontal and right temporal regions have been found to play a role in emotional prosody perception. Here, we used triple-pulse repetitive transcranial magnetic stimulation (rTMS) to shed light on the precise time course of involvement of the right anterior superior temporal gyrus and the right fronto-parietal operculum. We hypothesized that information would be processed in the right anterior superior temporal gyrus before being processed in the right fronto-parietal operculum. Right-handed healthy subjects performed an emotional prosody task. During listening to each sentence a triplet of TMS pulses was applied to one of the regions at one of six time points (400–1900 ms). Results showed a significant main effect of Time for right anterior superior temporal gyrus and right fronto-parietal operculum. The largest interference was observed half-way through the sentence. This effect was stronger for withdrawal emotions than for the approach emotion. A further experiment with the inclusion of an active control condition, TMS over the EEG site POz (midline parietal-occipital junction), revealed stronger effects at the fronto-parietal operculum and anterior superior temporal gyrus relative to the active control condition. No evidence was found for sequential processing of emotional prosodic information from right anterior superior temporal gyrus to the right fronto-parietal operculum, but the results revealed more parallel processing. Our results suggest that both right fronto-parietal operculum and right anterior superior temporal gyrus are critical for emotional prosody perception at a relatively late time period after sentence onset. This may reflect that emotional cues can still be ambiguous at the beginning of sentences, but become more apparent half-way through the sentence

    On the roles of AA15 lytic polysaccharide monooxygenases derived from the termite Coptotermes gestroi

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    Lytic polysaccharide monooxygenases (LPMOs) are copper-dependent enzymes which catalyze the oxidative cleavage of polysaccharides. LPMOs belonging to family 15 in the Auxiliary Activity (AA) class from the Carbohydrate-Active Enzyme database are found widespread across the Tree of Life, including viruses, algae, oomycetes and animals. Recently, two AA15s from the firebrat Thermobia domestica were reported to have oxidative activity, one towards cellulose or chitin and the other towards chitin, signalling that AA15 LPMOs from insects potentially have different biochemical functions. Herein, we report the identification and characterization of two family AA15 members from the lower termite Coptotermes gestroi. Addition of Cu(II) to CgAA15a or CgAA15b had a thermostabilizing effect on both. Using ascorbate and O2 as co-substrates, CgAA15a and CgAA15b were able to oxidize chitin, but showed no activity on celluloses, xylan, xyloglucan and starch. Structural models indicate that the LPMOs from C. gestroi (CgAA15a/CgAA15b) have a similar fold but exhibit key differences in the catalytic site residues when compared to the cellulose/chitin-active LPMO from T. domestica (TdAA15a), especially the presence of a non-coordinating phenylalanine nearby the Cu ion in CgAA15a/b, which appears as a tyrosine in the active site of TdAA15a. Despite the overall similarity in protein folds, however, mutation of the active site phenylalanine in CgAA15a to a tyrosine did not expanded the enzymatic specificity from chitin to cellulose. Our data show that CgAA15a/b enzymes are likely not involved in lignocellulose digestion but might play a role in termite developmental processes as well as on chitin and nitrogen metabolisms

    Mood Induction in Depressive Patients: A Comparative Multidimensional Approach

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    Anhedonia, reduced positive affect and enhanced negative affect are integral characteristics of major depressive disorder (MDD). Emotion dysregulation, e.g. in terms of different emotion processing deficits, has consistently been reported. The aim of the present study was to investigate mood changes in depressive patients using a multidimensional approach for the measurement of emotional reactivity to mood induction procedures. Experimentally, mood states can be altered using various mood induction procedures. The present study aimed at validating two different positive mood induction procedures in patients with MDD and investigating which procedure is more effective and applicable in detecting dysfunctions in MDD. The first procedure relied on the presentation of happy vs. neutral faces, while the second used funny vs. neutral cartoons. Emotional reactivity was assessed in 16 depressed and 16 healthy subjects using self-report measures, measurements of electrodermal activity and standardized analyses of facial responses. Positive mood induction was successful in both procedures according to subjective ratings in patients and controls. In the cartoon condition, however, a discrepancy between reduced facial activity and concurrently enhanced autonomous reactivity was found in patients. Relying on a multidimensional assessment technique, a more comprehensive estimate of dysfunctions in emotional reactivity in MDD was available than by self-report measures alone and this was unsheathed especially by the mood induction procedure relying on cartoons. The divergent facial and autonomic responses in the presence of unaffected subjective reactivity suggest an underlying deficit in the patients' ability to express the felt arousal to funny cartoons. Our results encourage the application of both procedures in functional imaging studies for investigating the neural substrates of emotion dysregulation in MDD patients. Mood induction via cartoons appears to be superior to mood induction via faces and autobiographical material in uncovering specific emotional dysfunctions in MDD

    Síndrome de Alport: Alport syndrome

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    Introdução: Síndrome de Alport (SA) é uma doença hereditária caracterizada por nefropatia hemorrágica familiar, surdez neurossensorial e alterações oculares. Sua patologia está relacionada a mutações nos genes COL4A3, COL4A4, COL4A5 os quais são responsáveis por codificar síntese do colágeno tipo IV, que é essencial para a formação da membrana basal de diversos órgãos. Apresentação do caso: 23 ANOS, sexo masculino, natural do Rio de Janeiro - RJ, procurou atendimento médico com queixa de hipoacusia bilateral, diminuição da acuidade visual e edema progressivo de membros inferiores. Discussão: sua clínica é composta por manifestações renais como hematúria e/ou proteinúria, que com o tempo evoluem para falência renal; manifestações oculares, como lentecone anterior, catarata, “flecks” na retina, nistagmo e miopia; e manifestações auditivas nas quais ocorrem o desenvolvimento de perda auditiva neurossensorial de alta frequência.O diagnóstico da síndrome é suspeitado quando existem familiares com histórico de insuficiência renal, surdez e perda visual. Em 15% dos casos, não há histórico familiar associado, sendo necessária a realização de biópsia renal. Conclusão: quando o prognóstico do paciente é desfavorável, é necessário um adequado suporte clínico em medidas preventivas e terapêuticas, tanto farmacológicas quanto dietéticas, para que se possa retardar as complicações, principalmente a piora da função renal e uma necessidade de diálise ou até mesmo transplante dos rins
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