Class dissatisfaction and intelligibility of PBL

In the context of changing strategies, many teachers are challenged to leave their teaching models and switch to others that bring concepts and principles that often do not meet the previous model in teaching. This change is not trivial, because at the slightest sign of weakness in the new model, there is a tendency to return to the previous model experienced for a long time and even if it proves unsatisfactory, it is a safe haven for the teacher. In this work, data regarding satisfaction with previous teaching models and the intelligibility of teachers about new teaching models that provide for the use of projects will be presented. This is a complement to the work previously presented at PAEE. The teachers' previous conception of a model to structure the PBL will be raised based on data obtained in two stages from a questionnaire conducted with different groups of teachers. The results indicate that the basic principles of PBL are known and understood by teachers, though the same give it a peculiar structure, changing the order of the steps in relation to the standard models of PBL. Teachers also realize the advantage of using PBL, that is, there is the belief that the use of this strategy can contribute to learning. At the same time, there is resistance to the use of these strategies, which may be associated with the doubt that new models can be positive to promote learning.To the teachers that kindly responded to the research. This work was partially supported by CNPq - National Council for Scientific and Technological Development - as scientific initiation sponsorship, and partially supported by FCT – Fundação para a Ciência e Tecnologia - within the R&D Units Project Scope: UIDB/00319/2020

Copper chloride crystallization applied to cassava (Manihot esculenta Crantz)

The sensitive crystallization of copper chloride (Pfeiffer's method) is applied to aqueous extracts from leaves, stems, roots and flowers from two varieties, toxic and non toxic,, of cassava (Manihot escidenta Crantz). The comparative description of the 20 series studied shows that, even though the crystallization patterns are morphologically poor, the method has enough sensibility to be used in cassava problems. The application of sensitive crystallization: in differentiation of varieties is recomended.A cristalização sensitiva do cloreto de cobre (método de Pfeiffer) é aplicada a extratos aquosos de mandioca (Manihot esculenta Crantz). São estudados os modelos de cristalização obtidos com extratos de folhas, caules, raízes e folhas de cutivares mansos e bravos, num total de 20 séries com 2 repetições. A descrição comparativa mostra que, embora os modelos de cristalização sejam morfologicamente pobres, o método é suficientemente sensível para estudos com mandioca, recomendando-se a ampliação da pesquisa visando à caracterização cristalogenética de cultivares

Aplicação da cristalização sensitiva na determinação da qualidade da bebida de café

The sensitive crystallization method was applied in an attempt to differentiate coffee beverages quality. Fifty crystallization series were done, with 9 different relative concentrations of extract and copper chloride and 4 beverages types. The main conclusion is that it was not possible to differentiate the coffee types by means of the crystallization patterns. Both the extract and the salt were shown to be the most important factor in determining the crystallization models.O método da cristalização sensitiva é aplicado na tentativa de determinar a qualidade da bebida de café. Foram efetuadas 50 séries de cristalização, com 3 repetições, envolvendo 9 diferentes concentrações relativas do extrato e do cloreto e 4 tipos de bebida, duas do tipo mole e duas do tipo rio. A conclusão principal é que os resultados obtidos não permitem a identificação do tipo de bebida através do modelo de cristalização. As concentrações do extrato e do cloreto são os fatores mais importantes na variação de um modelo para outro

String versus Einstein frame in an AdS/CFT induced quantum dilatonic brane-world universe

AdS/CFT induced quantum dilatonic brane-world where 4d boundary is flat or de Sitter (inflationary) or Anti-de Sitter brane is considered. The classical brane tension is fixed but boundary QFT produces the effective brane tension via the account of corresponding conformal anomaly induced effective action. This results in inducing of brane-worlds in accordance with AdS/CFT set-up as warped compactification. The explicit, independent construction of quantum induced dilatonic brane-worlds in two frames: string and Einstein one is done. It is demonstrated their complete equivalency for all quantum cosmological brane-worlds under discussion, including several examples of classical brane-world black holes. This is different from quantum corrected 4d dilatonic gravity where de Sitter solution exists in Einstein but not in Jordan (string) frame. The role of quantum corrections on massive graviton perturbations around Anti-de Sitter brane is briefly discussed.Comment: LaTeX file, 24 pages, minor changes to match with published versio

Determinants of reef fish assemblages in tropical Oceanic islands

Diversity patterns are determined by biogeographic, energetic, and anthropogenic factors, yet few studies have combined them into a large‐scale framework in order to decouple and compare their relative effects on fish faunas. Using an empirical dataset derived from 1527 underwater visual censuses (UVC) at 18 oceanic islands (five different marine provinces), we determined the relative influence of such factors on reef fish species richness, functional dispersion, density and biomass estimated from each UVC unit. Species richness presented low variation but was high at large island sites. High functional dispersion, density, and biomass were found at islands with large local species pool and distance from nearest reef. Primary productivity positively affected fish richness, density and biomass confirming that more productive areas support larger populations, and higher biomass and richness on oceanic islands. Islands densely populated by humans had lower fish species richness and biomass reflecting anthropogenic effects. Species richness, functional dispersion, and biomass were positively related to distance from the mainland. Overall, species richness and fish density were mainly influenced by biogeographical and energetic factors, whereas functional dispersion and biomass were strongly influenced by anthropogenic factors. Our results extend previous hypotheses for different assemblage metrics estimated from empirical data and confirm the negative impact of humans on fish assemblages, highlighting the need for conservation of oceanic islands.UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencias del Mar y Limnología (CIMAR

Territorialização e redes na sociedade contemporânea: religião e cuidado no espaço público

-Nesta pesquisa trabalhamos o conceito de territorialização para compreender as condições e possibilidades de acesso à variedade de recursos decuidado que se encontram disponibilizados em um determinado contexto social. A partir do trabalho de observação e de entrevistas feitas com osprofissionais e os usuários da Unidade Básica de Saúde do Bairro de Santa Luzia, Juiz de Fora – MG, intentamos entender as redes de cuidadoatravés das quais se operacionaliza a territorialização.Essas redes sociais são espaços em que se encontram tanto o formato territorialização-dominação da UBS, quanto as diferentes articulaçõesintersticiais realizadas como válvula de escape por parte dos usuários. Entendidas como um recurso metodológico, elas nos permitem entender asnovas configurações que o social assume. Entendemos o social como um tipo de conexão que coloca em relação coisas não sociais, produzindosempre novas percepções acerca do que constituem os vínculos entre os humanos. Portanto, é nesse espaço-conexão em rede que se produz aterritorialização, ou melhor, que o conceito territorialização é metaforizado em vários tipos de territorialização: 1. a própria delimitação do espaçogeográfico adscrito pela UBS; 2. o âmbito familiar e 3. os espaços de interação por onde circulam os sujeitos/usuários. Em tais espaçosterritorializados podemos perceber as relações entre diferentes experiências terapêuticas e a Estratégia de Saúde da Família, no que diz respeito aosvariados graus de receptividade da ESF e as articulações diversas entre o cuidado profissional e as terapêuticas populares e/ou religiosas

Programas das Diversas Cadeiras do Curso Normal, 1930, MA

Documento que descreve os programas de diversas cadeiras do Curso Normal, publicado em 1930, como Português, Francês, Inglês, Arithmética, Álgebra, Geometria, Geographia, Chorographia, Chimica (Química), Physica, Pedagogia, Instricção Moral e Cívica, Prendas Femininas, Calligraphia, Música, Desenho, História Universal e da América, História do Brasil e História Natural.Programa de Diversas Cadeiras do Curso Normal, publicado no ano de 1930