Requalification of the river park: eco-houses in Elche

The city of Elche, the second most important town of Alicante’s province, thanks to its 230,000 inhabitants, has a lot of heritage values such as the Misteri and the Palmeral. In its urban structure, the relation between the original urban plot and the modern one is made from the location of the river Vinalopò. Its canal is dry most of the year and its slopes are residual spaces that are not integrated with the modern and the ancient existing urban plot. The city of Elche relationship with the Palmeral does not give added value to the numerous urban parks that are in many parts of the city. This research could organize a new building typology of flats. It has tried to build a relationship with the environment that would bring benefits for the relationship between the urban plot and the river. In this way it would encourage a revitalization of the existing river park in support of architectural proposals such as an equipped park. In addition, these houses have bioclimatic technology of cooling evaporating using the natural airstream produced in the park which is induced through the building’s structural system. Introduced by the chimney effect, the air is cooled by vegetal masses. The orientation to the West of glazing, that looks at the river park, causes a lot of energy problems. This research analyses a wrapped and protective solar system based on a vertical rotating panel formed by low thickness and large format ceramic tiles in various sceneries. With modelling and the simulation through the software Design Builder, energetic demands for different sceneries are obtained which allow us to draw conclusions about the most efficient system in terms of energy consumption

Pedagogias do conflito ambiental: contribuições de uma experiência participativa da formação de professores em um território disputado

We present a first systematization of an in-service teacher training process, arising from the articulation between a socio-territorial organization and a school in the Paraná Delta. This territory of extensive wetlands is crisscrossed by disputes between on one side rural living spaces and islander ways of life and on the other side privatization and transformation into luxury gated communities with serious socio-environmental consequences. We intend to contribute to the understanding of some ways in which these socio-territorial movements can contribute to the pedagogical-didactic frameworks that sustain dialogues between school and communities. In particular, we analyze the contributions to the pedagogization of environmental conflictsPresentamos una primera sistematización de un proceso de formación docente en ejercicio, surgido de la articulación entre una organización socioterritorial y una escuela en el Delta del Paraná. Este territorio de extensos humedales se encuentra atravesado por disputas entre espacios de vida campesina, portadora de modos de vida isleños, y avanzadas de privatización hacia barrios cerrados de lujo con graves consecuencias socioambientales. Pretendemos aportar a la comprensión algunas maneras en las que estos movimientos pueden contribuir a los marcos pedagógico-didácticos que sustentan diálogos entre escuela y comunidades. En particular, analizamos los aportes a la pedagogización de los conflictos ambientales.Apresentamos uma primeira sistematização de um processo de formação de professores em serviço, decorrente da articulação entre uma organização sócio-territorial e uma escola no Delta do Paraná. Esse território de extensas áreas úmidas é atravessado por disputas entre os espaços de vida camponeses com estilos de vida insulares e a privatização para bairros fechados de luxo com sérias conseqüências socioambientais. Pretendemos contribuir para a compreensão de algumas maneiras pelas quais esses movimentos podem contribuir para as estruturas pedagógico-didáticas que sustentam o diálogo entre a escola e as comunidades. Em particular, analisamos as contribuições para a pedagogização de conflitos ambientais

Variable Number Tandem Repeats in the promoter region of prostacyclin synthase gene in choline deficient rats.

Weanling Sprague-Dawley rats were fed on a choline-deficient diet with hydrogenated vegetable oil and corn oil as lipids develop acute renal failure. Pathogenesis of the latter is controversial and an ischemic mechanism has been proposed. Arachidonic acid derivatives are involved in the regulation of vascular tonus. Vasospasm could be due to an increase in tromboxane A2-mediated vasoconstriction or to a decrease in prostacyclin-induced vasodilatation. Enzymes involved in the synthesis of both compounds are tromboxane A2- and prostacyclin-synthase respectively. The aim of this study was to identify the variable number tandem repeats (VNTR) in the promoter region of prostacyclin synthase gene and verify if there exists a relationship between the occurrence of VNTR in those choline-deficient rats which die because of acute renal failure and those which do not. We verified the presence of the VNTR in the prostacyclin synthase rat gene, but we did not find any difference in the molecular weight of the alleles between experimental and control rats. Renal reparation of the acute kidney injury due to choline deficiency in some rats is not related with differences in VNTR in the promoter region of the prostacyclin synthase gene. Weanling Sprague-Dawley rats fed a choline-deficient diet with hydrogenated vegetable oil and corn oil as lipids develop acute renal failure. Its pathogenesis is controversial. The ischemic mechanism has been proposed. Derivatives from arachidonic acid are involved in the regulation of vascular tone. Vasospasm could be due to an increase in vasoconstriction mediated by tromboxane A2 or a decrease in vasodilatation by prostacyclin. Enzymes involved in the synthesis of them are tromboxane A2 and prostacyclin synthase respectively. The aim of this study is to identify the variable number tandem repeats (VNTR) in the promoter region of prostacyclin synthase gene and verify if there exists a relationship between the VNTR and those rats which dye as a consequence of acute renal failure due to choline deficiency and those which do not die. The VNTR presence was detected by molecular methods. We verified the presence of the VNTR in the prostacyclin synthase rat gene. We did not find difference in the molecular weight of the alleles between experimental and control rats. Renal reparation of the acute kidney injury due to choline deficiency in Sprague-Dawley rats is not related with differences in prostacyclin synthase VNTR, in the promoter region of this gene.Fil: Denninghoff, Valeria Cecilia. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Patología. Centro de Patología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; ArgentinaFil: Ossani, Georgina Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Patología. Centro de Patología Experimental; ArgentinaFil: Uceda, Ana Margarita. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Patología. Centro de Patología Experimental; ArgentinaFil: Avagnina Iribarren, Maria Alejandra. Centro de Educaciones Médicas e Investigación Clínica "Norberto Quirno"; ArgentinaFil: Elsner, Boris. Centro de Educaciones Médicas e Investigación Clínica "Norberto Quirno"; ArgentinaFil: Monserrat, Alberto Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Patología. Centro de Patología Experimental; Argentin

Evaluación xilológica de familias mejoradas de sauces con destino industrial maderero

El objetivo del trabajo fue la evaluación a edad temprana de la anatomía y densidad de la madera y su relacióncon el crecimiento en diámetro en 18 familias de sauces, con vistas a seleccionar clones aptos para laproducción de madera para usos sólidos y papel. Se cruzaron progenitores de ocho especies de sauces (Salixalba, S. amygdaloides, S. babylonica, S. matsudana, S. humboldtiana, S. jessoensis, S. viminalis y S. nigra),obteniéndose individuos correspondientes a 18 familias. Se seleccionaron 365 individuos dentro de las familiassobre los cuales se evaluaron las propiedades de la madera a los 3 años de edad. La familia resultó una fuentesignificativa de variación tanto para el crecimiento como para las propiedades de la madera. El crecimiento endiámetro presentó correlación positiva con la densidad de la madera (r= 0,47) y con el diámetro de vasos (r=0,73) y negativa con la frecuencia de vasos (r= -0,59). La longitud de fibras no se correlacionó significativamentecon ninguna variable medida. Por lo tanto es posible, hallar combinaciones de buen diámetro, con alta densidady altos valores de longitud de fibras. Se destacaron los cruzamientos donde intervienen como progenitorfemenino S. amygdaloides y S. matsudana, ya que demostraron las mejores combinaciones de propiedades paradiferentes destinos industriales como son: buen crecimiento en diámetro (mayores a 5cm), con altas densidadesde la madera (mayores a 0,400 g/cm3) y mayores longitudes de fibras (superiores a 700 µm). Se aconseja lapropagación de ciertas familias promisorias para aserrado y para papel.The objective of this study was to evaluate the anatomy and wood density at early age and its relation to the growth in diameter. 18 willow´s families were evaluated to select clones suitable for the production of solid wood and paper applications. Parents of eight species of willows were crossed (Salix alba, S. amygdaloides, S. babylonica, S. matsudana, S. humboldtiana, S. jessoensis, S. viminalis and S. nigra) and individuals for 18 families were taken. 365 genotypes were selected and their wood properties at the age of 3 years were evaluated. The family was a significant source of variation for both growth and for the properties of wood. Diameter growth was positively correlated with wood density (r= 0.47) and vessel diameter (r= 0.73) but it was negatively correlated with the frequency of vessels (r= -0.59). The fiber length was not significantly correlated with any measured variable. Therefore, it is possible to select clones with great diameter, high density and high fiber length. Crosses which involved S. amygdaloides and S. matsudana as female parent stood out, as they showed the best combination of properties for different industrial destinations such as: good growth in diameter (greater than 5 cm), with high wood densities (greater to 0,400 g/cm3 ) and high fiber lengths (over 700 µm). Certain promising families are recommended for sawing and paper industry.Fil: Cerrillo, Teresa. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Norte. Estación Experimental Agropecuaria Delta del Paraná; ArgentinaFil: Iribarren, R. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; ArgentinaFil: Cobas, Ana Clara. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; ArgentinaFil: Monteoliva, Silvia Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentin

Xylem evaluation of improved willow families for timber industrial use

El objetivo del trabajo fue la evaluación a edad temprana de la anatomía y densidad de la madera y su relación con el crecimiento en diámetro en 18 familias de sauces, con vistas a seleccionar clones aptos para la producción de madera para usos sólidos y papel. Se cruzaron progenitores de ocho especies de sauces (Salix alba, S. amygdaloides, S. babylonica, S. matsudanaS. humboldtiana, S. jessoensis, S. viminalis y S. nigra), obteniéndose individuos correspondientes a 18 familias. Se seleccionaron 365 individuos dentro de las familias sobre los cuales se evaluaron las propiedades de la madera a los 3 años de edad. La familia resultó una fuente significativa de variación tanto para el crecimiento como para las propiedades de la madera. El crecimiento en diámetro presentó correlación positiva con la densidad de la madera (r= 0,47) y con el diámetro de vasos (r= 0,73) y negativa con la frecuencia de vasos (r= -0,59). La longitud de fibras no se correlacionó significativamente con ninguna variable medida. Por lo tanto es posible, hallar combinaciones de buen diámetro, con alta densidad y altos valores de longitud de fibras. Se destacaron los cruzamientos donde intervienen como progenitor femenino S. amygdaloides y S. matsudana, ya que demostraron las mejores combinaciones de propiedades para diferentes destinos industriales como son: buen crecimiento en diámetro (mayores a 5cm), con altas densidades de la madera (mayores a 0,400 g/cm3) y mayores longitudes de fibras (superiores a 700 μm). Se aconseja la propagación de ciertas familias promisorias para aserrado y para papel.The objective of this study was to evaluate the anatomy and wood density at early age and its relation to the growth in diameter. 18 willow´s families were evaluated to select clones suitable for the production of solid wood and paper applications. Parents of eight species of willows were crossed (Salix alba, S. amygdaloides, S. babylonica, S. matsudanaS. humboldtiana, S. jessoensis, S. viminalis y S. nigra) and individuals for 18 families were taken. 365 genotypes were selected and their wood properties at the age of 3 years were evaluated. The family was a significant source of variation for both growth and for the properties of wood. Diameter growth was positively correlated with wood density (r= 0.47) and vessel diameter (r= 0.73) but it was negatively correlated with the frequency of vessels (r= -0.59). The fiber length was not significantly correlated with any measured variable. Therefore, it is possible to select clones with great diameter, high density and high fiber length. Crosses which involved S. amygdaloides and S. matsudana as female parent stood out, as they showed the best combination of properties for different industrial destinations such as: good growth in diameter (greater than 5 cm), with high wood densities (greater to 0,400 g/cm3) and high fiber lengths (over 700 μm). Certain promising families are recommended for sawing and paper industry.Facultad de Ciencias Agrarias y Forestale

Xylem evaluation of improved willow families for timber industrial use

El objetivo del trabajo fue la evaluación a edad temprana de la anatomía y densidad de la madera y su relación con el crecimiento en diámetro en 18 familias de sauces, con vistas a seleccionar clones aptos para la producción de madera para usos sólidos y papel. Se cruzaron progenitores de ocho especies de sauces (Salix alba, S. amygdaloides, S. babylonica, S. matsudanaS. humboldtiana, S. jessoensis, S. viminalis y S. nigra), obteniéndose individuos correspondientes a 18 familias. Se seleccionaron 365 individuos dentro de las familias sobre los cuales se evaluaron las propiedades de la madera a los 3 años de edad. La familia resultó una fuente significativa de variación tanto para el crecimiento como para las propiedades de la madera. El crecimiento en diámetro presentó correlación positiva con la densidad de la madera (r= 0,47) y con el diámetro de vasos (r= 0,73) y negativa con la frecuencia de vasos (r= -0,59). La longitud de fibras no se correlacionó significativamente con ninguna variable medida. Por lo tanto es posible, hallar combinaciones de buen diámetro, con alta densidad y altos valores de longitud de fibras. Se destacaron los cruzamientos donde intervienen como progenitor femenino S. amygdaloides y S. matsudana, ya que demostraron las mejores combinaciones de propiedades para diferentes destinos industriales como son: buen crecimiento en diámetro (mayores a 5cm), con altas densidades de la madera (mayores a 0,400 g/cm3) y mayores longitudes de fibras (superiores a 700 μm). Se aconseja la propagación de ciertas familias promisorias para aserrado y para papel.The objective of this study was to evaluate the anatomy and wood density at early age and its relation to the growth in diameter. 18 willow´s families were evaluated to select clones suitable for the production of solid wood and paper applications. Parents of eight species of willows were crossed (Salix alba, S. amygdaloides, S. babylonica, S. matsudanaS. humboldtiana, S. jessoensis, S. viminalis y S. nigra) and individuals for 18 families were taken. 365 genotypes were selected and their wood properties at the age of 3 years were evaluated. The family was a significant source of variation for both growth and for the properties of wood. Diameter growth was positively correlated with wood density (r= 0.47) and vessel diameter (r= 0.73) but it was negatively correlated with the frequency of vessels (r= -0.59). The fiber length was not significantly correlated with any measured variable. Therefore, it is possible to select clones with great diameter, high density and high fiber length. Crosses which involved S. amygdaloides and S. matsudana as female parent stood out, as they showed the best combination of properties for different industrial destinations such as: good growth in diameter (greater than 5 cm), with high wood densities (greater to 0,400 g/cm3) and high fiber lengths (over 700 μm). Certain promising families are recommended for sawing and paper industry.Facultad de Ciencias Agrarias y Forestale

Formação docente da educação popular em ciências naturais, ambiental e em saúde: Algumas tensões e experiências

A partir de nuestra experiencia acumulada como Grupo de Didáctica de las Ciencias reflexionamos acerca de las tensiones y potencialidades que se despliegan en la construc-ción de espacios de formación docente inicial y en ejercicio, orientados desde la educación popular de base freireana hacia la transformación de las prácticas en la educación en ciencias naturales, ambiental y en salud. Basándonos en nuestras experiencias, identifi-camos un eje de tensiones y potencialidades vinculado a la transformación de la lectura de la realidad, de la propia práctica y de la realidad misma, y otro eje asociado a la posibilidad de que ingresen saberes de fuentes diversas a la formación docente. A partir de este análisis, recuperamos categorías teóricas y situaciones de la práctica relacionadas con condiciones que propician cambios, participación real, diálogo de saberes y vivires y cruces entre educación popular, teoría y práctica de la formación docente.From our accumulated experience as a Science Didactics Group, we reflect on the tensions and potentialities that unfold in the cons-truction of initial and in-service teacher training spaces, oriented from Freirean-based popular education towards the transformation of practices in Natural Sciences, Environmental and Health Education. Based on our experiences, we identified an axis of tensions and potential linked to the transformation of the reading of reality, of practice itself and of reality itself; and another axis linked to the possibility of bringing knowledge from different sources into teacher training. From this analysis, we recovered theoretical categories and situations of practice related to conditions that favor changes, real participation, knowledge and experiences dialogues and crossings between popular education, theory and practice of teacher trainingA partir de nossa experiência acumulada como Grupo de Didática das Ciências, refletimos sobre as tensões e potencialidades que se desdobram na construção de espaços de formação docente inicial e em serviço, orientados pela educação popular baseada em Freire para a transformação de práticas em educação em ciências naturais, ambiental e em saúde. Com base em nossas experiências, identificamos um eixo de tensões e potencialidades ligadas à transformação da leitura da realidade, da própria prática e da própria realidade; e outro eixo ligado à possibilidade de trazer conhecimento de diferentes fontes para a formação de professores. A partir desta análise, recuperamos categorias teóricas e situações da prática relacionadas com condições que favorecem mudanças, participação real, diálogo de conhecimentos e experiências e cruzamentos entre educação popular, teoria e prática da formação de professores

Assessment of a surface-active ionic liquid formulation for EOR applications: Experimental and simulation studies

This study aims to assess a surfactant blend for enhanced oil recovery from carbonate rocks. Due to the abundance of these reservoirs, their profitable exploitation would ensure our petrochemical needs are met, and maintain current quality of life. The objective of this work is to increase the technology readiness level of our previous proposal based on the use of a blend of pure sodium dodecylbenzene sulfonate and the surface-active ionic liquid cocosalkylpentaethoximethyl ammonium methylsulfate. To that aim, the method was adapted for its application with a commercially available petrochemical surfactant (RECOLAS103, a mixture of lineal alkyl benzene sulfonates), and reservoir simulations were carried out to evaluate its effectiveness. Phase behavior, stability, dynamic interfacial tension, adsorption and core flooding were the experimental tests carried out. An optimized formulation consisting of 1 wt% of blend (40 wt% RECOLAS103) in synthetic sea water was found stable and able to reduce water-oil interfacial tension down to 0.02 mN/m. The dynamic blend adsorption in carbonate rocks was found to be 0.60 mg/grock, a promising value for the application. Core flooding tests were conducted at 25 and 120 °C and additional oil recoveries achieved ranged from 10.2 to 12.7% of the original oil in place, the lowest production obtained at the highest temperature. This work offers an advance in the application of surfactants for EOR in carbonate reservoirs, since it improves previous proposals that show stability or high adsorption problems. Moreover, a chemical injection optimization was also carried out by simulation with the CMG-STARS software. Results point to the possibility of reaching higher oil recoveries than those obtained experimentally if the extraction method is optimizedS

Pedagogias do conflito ambiental: contribuições de uma experiência participativa da formação de professores em um território disputado

Presentamos una primera sistematización de un proceso de formación docente en ejercicio, surgido de la articulación entre una organización socio-territorial y una escuela en el Delta del Paraná. Este territorio de extensos humedales se encuentra atravesado por disputas entre espacios de vida campesina portadora de modos de vida isleños y avanzadas de privatización hacia barrios cerrados de lujo con graves consecuencias socio-ambientales. Pretendemos aportar a la comprensión de algunas maneras en que estos movimientos pueden contribuir a los marcos pedagógico-didácticos que sustentan diálogos entre escuela y comunidades. En particular, analizamos los aportes a la pedagogización de los conflictos ambientales.We present a first systematization of an in-service teacher training process, arising from the articulation between a socio-territorial organization and a school in the Paraná Delta. This territory of extensive wetlands is crisscrossed by disputes between on one side rural living spaces and islander ways of life and on the other side privatization and transformation into luxury gated communities with serious socio-environmental consequences. We intend to contribute to the understanding of some ways in which these socio-territorial movements can contribute to the pedagogical-didactic frameworks that sustain dialogues between school and communities. In particular, we analyze the contributions to the pedagogization of environmental conflicts.Apresentamos uma primeira sistematização de um processo de formação de professores em serviço, decorrente da articulação entre uma organização sócio-territorial e uma escola no Delta do Paraná. Esse território de extensas áreas úmidas é atravessado por disputas entre os espaços de vida camponeses com estilos de vida insulares e a privatização para bairros fechados de luxo com sérias conseqüências socioambientais. Pretendemos contribuir para a compreensão de algumas maneiras pelas quais esses movimentos podem contribuir para as estruturas pedagógico-didáticas que sustentam o diálogo entre a escola e as comunidades. Em particular, analisamos as contribuições para a pedagogização de conflitos ambientais.Fil: Iribarren, Luciano Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; ArgentinaFil: Guerrero Tamayo, Yamile Katherine. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; ArgentinaFil: Garelli, Fernando Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; ArgentinaFil: Dumrauf, Ana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; Argentin

Educação ambiental e projetos curriculares para a educação secundária básica na província de Buenos Aires: análise crítica no contexto da nova legislação nacional

Las formas de inclusión de la Educación Ambiental (EA) en el currículum son una preocupación de larga data en el campo didáctico latinoamericano. Aquí analizamos los diseños curriculares para la Escuela Secundaria Básica de la provincia de Buenos Aires, Argentina. Si bien en normativas jerárquicamente superiores (Ley de Educación Provincial y Marco General de Política Curricular) la EA se fundamenta desde perspectivas críticas y etnográficas, es dispar su presencia transversal en los diseños curriculares. En algunas materias encontramos un curriculum vacío de EA mientras que otras presentan perspectivas fragmentarias y contradictorias entre sí. Sólo en Ciencias Sociales, Geografía y Construcción de Ciudadanía se plantea una visión crítica y etnográfica, que presenta vínculos con conflictos ambientales contemporáneos. En Geografía recuperamos la dimensión vivencial y el disfrute de lo ambiental, un aporte a las pedagogías del conflicto ambiental y a la hora de implementar la nueva normativa nacional de EA.The forms in which Environmental Education (EE) is included in the curriculum are a long-standing concern in the Latin American didactic field. In this paper we analyse the current curricular designs for the Basic Secondary School in the province of Buenos Aires, Argentina. Although in hierarchically superior regulations (Provincial Education Law and General Framework of Curricular Policy), EE is based on critical and ethnographic perspectives, it has an uneven transversal presence in the curricular designs. Some subjects present an empty EE curriculum, while others show fragmentary and contradictory perspectives. Only in Social Sciences, Geography and Citizenship Building is there a critical and ethnographic vision, linked to contemporary environmental conflicts. From Geography we recovered the experiential dimension and the enjoyment of the environment as a contribution to the pedagogies of environmental conflict and to the ongoing implementation the new national EE regulations.As formas de inclusão da Educação Ambiental (EA) no currículo são uma preocupação de longa data no campo didático latino-americano. Aqui analisamos os projetos curriculares em vigor para o Ensino Secundário Básico na província de Buenos Aires, Argentina. Embora nas regulações hierarquicamente superiores (Lei Provincial de Educação e Marco Geral da Política Curricular) a EA baseia-se em perspectivas críticas e etnográficas, sua presença transversal nos projetos curriculares é heterogênea. Algumas disciplinas apresentam um currículo de EA vazio, enquanto outras mostram perspectivas fragmentadas e contraditórias. Apenas em Ciências Sociais, Geografia e Construção da Cidadania existe uma visão crítica e etnográfica, ligada aos conflitos ambientais contemporâneos. Na Geografia, recuperamos a dimensão experiencial e a fruição do meio ambiente como uma contribuição para as pedagogias do conflito ambiental e para a implementação das novas regulações nacionais de EA.Grupo de Didáctica de las CienciasConsejo Nacional de Investigaciones Científicas y Técnica