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Adolescent civic engagement education centered in antiracist praxis
Arias Laura,Parameswaran Gowri 한국다문화교육학회 2021 Multicultural Education Review Vol.13 No.3
US youth have demonstrated a deeper involvement in social and political issues today than in earlier decades. This trend is reflected in more active voting behaviours as well as more protest and general activism efforts. This paper offers teachers ways to engage students in facilitating and infusing antiracism thought and behaviour into their civic engagement learning. One of the most significant social and political issues today is racial injustice and its deep connection to other forms of injustice sought to be remedied through political participation. Thus, understanding the relationship between antiracist action and civic and political involvement should be central to civic engagement education. Based on Freire’s discussions on praxis as well as his conceptualization of critical consciousness, which has been expanded on by more recent scholars, along with the scholarship on the necessity of antiracism in our society and schools, we formulate and present a conceptual framework, consisting of four major pillars, for antiracist civic engagement adolescent education. The pillars can be incorporated by antiracist educators with ease and can be scaffolded into their teaching. Each pillar is accompanied by practical exercises that instructors could use in their own antiracist teaching.
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Peñuela Mauricio,Viáfara-Vega Ronald,Arias Leidy Laura,Cifuentes-Silva Héctor,López José,Cárdenas Heiber 한국작물학회 2022 Journal of crop science and biotechnology Vol.25 No.2
Usually is common to see great diferences among plants in our crops, this can allow us to think about selection of some plants with the best traits in order to show that character in the next generation and thus improve our crops. Nevertheless, we forget that the observed phenotypic variance of our crop is due to several factors as genetic and environmental components. Knowing how these factors afect traits is an important question because it can tell us whether a selection program is viable or not, which can save efort, time, and money. Here, we present a case of study in a Tabasco chili pepper crop from southwestern Colombia where farmers generally practice selection ignoring the genetic and environmental components of the selected traits. To reveal these components, we proposed to use the estimation of heritability in a narrow sense, for which we developed measurements in two generations of plants and we applied a simple regression model in concordance with the expected inbreeding value for an autogamous species. Subsequently, we amplifed microsatellite molecular markers to support heritability values based on genetic diversity and confrmed whether the assumed inbreeding value for their estimation based on the life history of the species, was correct.
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( Leonardo Lepiz Aguilar ),( Carlos E Rodriguez Rodriguez ),( Maria Laura Arias ),( Giselle Lutz ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.8
Cassava constitutes an abundant substrate in tropical regions. The production of butanol in ABE fermentation by Clostridium beijerinckii BA101 using cassava flour (CF) was scaled-up to bioreactor level (5 L). Optimized fermentation conditions were applied; that is, 40oC, 60 g/l CF, and enzymatic pretreatment of the substrate. The batch fermentation profile presented an acidogenic phase for the first 24 h and a solventogenic phase afterwards. An average of 37.01 g/l ABE was produced after 83 h, with a productivity of 0.446 g/l/h. Butanol production was 25.71 g/l with a productivity of 0.310 g/l/h, high or similar to analogous batch processes described for other substrates. Solvent separation by different combinations of fractioned and azeotropic distillation and liquid-liquid separation were assessed to evaluate energetic and economic costs in downstream processing. Results suggest that the use of cassava as a substrate in ABE fermentation could be a cost-effective way of producing butanol in tropical regions.
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