Cohomologia de grupos e invariante algébricos

Pós-graduação em Matemática - IBILCE

Carta pastoral septima, que el Ilmo. Sr. Obispo de Antequera, Valle de Oaxaca Dr. D. Vicente F. Marquez y Carrizosa dirige a sus Diocesanos, contra el discurso atribuido a Monseñor Strossmayer y que bajo el lema de la verdad en el vaticano...

UANL

Sub-tropical urban environment affecting content and composition of non-structural carbohydrates of Lolium multiflorum ssp italicum cv. Lema

This study analyzed the relationship between environmental factors, especially air pollution and climatic conditions, and non-structural carbohydrates (NSC) in plants of Lolium multiflorum exposed during 10 consecutive periods of 28 days at a polluted site (Congonhas) and at a reference site in Sao Paulo city (Brazil). After exposure, NSC composition and leaf concentrations of Al, Fe. Cu, Zn, Pb and Cd were measured. The seasonal pattern of NSC accumulation was quite similar in both sites, but plants at Congonhas showed higher concentrations of these compounds, especially fructans of low and medium degree of polymerization. Regression analysis showed that NSC in plants growing at the polluted site were explained by variations on temperature and leaf concentration of Fe (positive effect), as well as relative humidity and particulate material (negative effect). NSC in the standardized grass culture, in addition to heavy metal accumulation, may indicate stressing conditions in a sub-tropical polluted environment. (C) 2008 Elsevier Ltd. All rights reserved.

O lema aprender a aprender na literatura de informática educativa

This paper makes a characterization of pedagogical conceptions found in the educational informatics literature in Brazil as well as in the work of Seymour Papert given the undeniable influence of this author in that literature. We identified a strong hegemony in this field of learning-to-learn pedagogy by means of constructivism, constructionism, learning projects and pedagogy of competencies among others. We make a critical analysis of these trends in light of the historical-critical pedagogy pointing to a number of aspects that need further discussion, highlighting the problematic opposition between teaching and learning.

Leaves of Lolium multiflorum 'Lema' and tropical tree species as biomonitors of polycyclic aromatic hydrocarbons

This study extends the current knowledge regarding the use of plants for the passive accumulation of anthropogenic PAHs that are present in the atmospheric total suspended particles (TSP) in the tropics and sub-tropics. It is of major relevance because the anthropic emissions of TSP containing PAHs are significant in these regions, but their monitoring is still scarce. We compared the biomonitor efficiency of Lolium multiflorum 'Lema' and tropical tree species (Tibouchina pukka and Psidium guajava 'Paluma') that were growing in an intensely TSP-polluted site in Cubatao (SE Brazil), and established the species with the highest potential for alternative monitoring of PAHs. PAHs present in the TSP indicated that the region is impacted by various emission sources. L. multiflorum showed a greater efficiency for the accumulation of PAH compounds on their leaves than the tropical trees. The linear regression between the logBCF and logKoa revealed that L. multiflorum is an efficient biomonitor of the profile of light and heavy PAHs present in the particulate phase of the atmosphere during dry weather and mild temperatures. The grass should be used only for indicating the PAHs with higher molecular weight in warmer and wetter periods. (C) 2012 Elsevier Inc. All rights reserved.

Jorge H. Evans Civit (ed.), Antología del Index Aristotelicus de H. Bonitz, Buenos Aires, Santiago Arcos, 2010. Colaboradores del área de Lenguas Clásicas: L. Sardi de Estrella, E. Driban, E. Cecco, M.E. Guevara de Álvarez, C. Silventi, M.G. Barandica. Colaboradores del área de Filosofía: J.H. Evans Civit, D. Lema Sarmento, T. Squizzato, I. Anton Mlinar; ISBN 978-987-1240-53-1; 640 pág.

Fil: Bieda, Esteban.

Jorge H. Evans Civit (ed.), Antología del Index Aristotelicus de H. Bonitz, Buenos Aires, Santiago Arcos, 2010. Colaboradores del área de Lenguas Clásicas: L. Sardi de Estrella, E. Driban, E. Cecco, M.E. Guevara de Álvarez, C. Silventi, M.G. Barandica. Colaboradores del área de Filosofía: J.H. Evans Civit, D. Lema Sarmento, T. Squizzato, I. Anton Mlinar

Fil: Bieda, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas

Dionisio y Honorato : diálogo en defensa del Dr. D. José Antonio Balcells contra el anónimo inserto en el nº 120 del Popular con el lema "Un Inspector de drogas"

Mode of access: Internet.