BNCC, FLEXIBILIZAÇÃO CURRICULAR E PROTAGONISMO JUVENIL: MOVIMENTOS ATUAIS DE “CONSTRUÇÃO” DO ENSINO MÉDIO BRASILEIRO, A PARTIR DA LEI 13.415/2017

Resumo: O presente artigo investiga a Base Nacional Comum Curricular- BNCC, a flexibilização do currículo e a ideia de protagonismo juvenil, expressa por meio da Reforma do Ensino Médio, implantada no ano de 2017. A Metodologia utilizada foi a pesquisa bibliográfica de caráter qualitativo, tendo como referenciais os documentos que tratam sobre a reforma. Baseia suas reflexões no Materialismo Histórico Dialético, para o entendimento de elementos históricos e discursivos que permitam a compreensão de que a reforma está alinhada a um discurso neoliberal. As incursões apontaram que o processo proposto pela reforma desresponsabiliza o Estado pela ampla formação da juventude e seus processos de escolarização, assumindo um discurso de que o protagonismo juvenil se caracteriza como a condução dos jovens sobre seus projetos de vida, sua inserção no mercado de trabalho e por sua conduta cidadã, tendo a BNCC como instrumento alinhador desta política de educação.Palavras-chave: Base Nacional Comum Curricular, Flexibilização Curricular, Protagonismo Juvenil.BNCC, CURRICULAR FLEXIBILIZATION AND YOUTH PROTAGONISM: CURRENT MOVEMENTS OF "CONSTRUCTION" OF BRAZILIAN HIGH SCHOOL, FROM LAW 13.415 / 2017Abstract: This paper investigates the National Common Curricular Base - BNCC, the flexibility of the curriculum, and the idea of youth protagonism, expressed through the High School Reform, implemented in the year 2017. The methodology used was the qualitative bibliographic research, having as reference the documents dealing with the reform. It bases its reflections on Dialectical and Historical Materialism, to comprehend historical and discursive elements that allow the understanding that the reform is aligned to a neoliberal discourse. The incursions pointed out that the process proposed by the reform makes the State not responsible for the extensive formation of youth and their schooling processes, assuming a discourse that youth protagonism is characterized as the conduction of young people over their life projects, their insertion in the labor market. work and for its citizen behavior, having the BNCC as an alignment instrument of this education policy.Keywords: National Common Curriculum Base, Curricular Flexibility, Youth Protagonism

Scalp expansion for giant cutis verticis gyrata secondary to cerebriform intradermal nevus

Cutis verticis gyrata (CVG) is characterized by extensive formation of scalp skin that mirrors the folds of the cerebral gyri. Giant CVG secondary to cerebriform intradermal nevus (CIN) has been rarely reported, and its management mainly involves surgical excision. In certain cases of giant CVG, however, surgical excision is dilemmatic. This case report describes a giant CVG secondary to CIN that was successfully managed with scalp expansion and surgical excision. Previously published studies are also reviewed.

Formation of pannus on prosthetic valves in a child with pseudoxanthoma elasticum

A child with pseudoxanthoma elasticum had mitral valvar prolapse with severe regurgitation necessitating replacement with a prosthetic valve. Extensive formation of pannus caused obstruction of two mechanical valves, one after twenty months and the second after three years. Histology of the pannus was similar to the endocardial lesions that are considered unique to pseudoxanthoma elasticum.

Hydrogen transfer between ethanol molecules during oxidoreduction in vivo

Rates of exchange catalysed by alcohol dehydrogenase were determined in vivo in order to find rate-limiting steps in ethanol metabolism. Mixtures of [1,1-2H2]- and [2,2,2-2H3]ethanol were injected in rats with bile fistulas. The concentrations in bile of ethanols having different numbers of 2H atoms were determined by g.l.c.-m.s. after the addition of [2H6]ethanol as internal standard and formation of the 3,5-dinitrobenzoates. Extensive formation of [2H4]ethanol indicated that acetaldehyde formed from [2,2,2-2H3]ethanol was reduced to ethanol and that NADH used in this reduction was partly derived from oxidation of [1,1-2H2]ethanol. The rate of acetaldehyde reduction, the degree of labelling of bound NADH and the isotope effect on ethanol oxidation were calculated by fitting models to the found concentrations of ethanols labelled with 1-42H atoms. Control experiments with only [2,2,2-2H3]ethanol showed that there was no loss of the C-2 hydrogens by exchange. The isotope effect on ethanol oxidation appeared to be about 3. Experiments with (1S)-[1-2H]- and [2,2,2-2H3]ethanol indicated that the isotope effect on acetaldehyde oxidation was much smaller. The results indicated that both the rate of reduction of acetaldehyde and the rate of association of NADH with alcohol dehydrogenase were nearly as high as or higher than the net ethanol oxidation. Thus, the rate of ethanol oxidation in vivo is determined by the rates of acetaldehyde oxidation, the rate of dissociation of NADH from alcohol dehydrogenase, and by the rate of reoxidation of cytosolic NADH. In cyanamide-treated rats, the elimination of ethanol was slow but the rates in the oxidoreduction were high, indicating more complete rate-limitation by the oxidation of acetaldehyde.

Autometasomatic gneisses of the Currywongaun-Doughruagh syntectonic intrusion, Connemara Ireland

The Currywongaun and Doughruagh masses of northern Connemara represent a section through a syntectonic, partially layered intrusion formed of ultrabasic cumulates all having plagioclase of around An94. Differentiation and contamination of the magma from which these cumulates were precipitated ultimately produced an acid residuum which was responsible for the hydrous metasomatism of the earlier formed ultrabasic rocks resulting in the extensive formation of quartz-amphibole-anorthite gneisses in the petrogenetically ‘upper’ parts of the intrusion. Coexisting Ca-rich and Ca-poor amphiboles in the gneisses are interpreted as ‘frozen’ reaction intermediates that were in local equilibrium. The bulk-rock chemical data presented confirm that the compositions of the quartz-rich gneisses can be attributed almost entirely to the addition of Si to the ultrabasic rocks, coupled with the removal of Mg and Ca. The data also suggest that Zr, which reaches around 1000 ppm in some of the gneisses, may have been ‘mobile’ under these conditions of hydrothermal metasomatism.