USING BORDERLANDS LITERATURE TO INCREASE INTEREST IN LITERACY IN THE HERITAGE LANGUAGE: TEACHER RESEARCH WITH LATINO/A TEENAGE STUDENTS

This ethnographic action research documents my reflective practices as a teacher of Spanish for Heritage Speakers as I worked to engage my Latino/a students in literacy. In pursuit of this goal, I used borderlands literary topics, which deal with the dual experience of the immigrant or child of immigrants who lives a bicultural and bilingual existence, to guide students to explore their linguistic and cultural identities. I used several strategies to engage students, including independent reading, discussions of class readings, projects, movies and writing assignments. Throughout the process, I sought to acknowledge students' agency and draw on their perspectives, seeking their input and making use of reading topics that addressed the issues of socio-economic marginalization with which many students identified. As I lacked previous experience teaching Spanish for Heritage Speakers classes, I also sought the professional advice of five teachers who were veterans of the course. My experience suggests a connection between identity exploration and interest in reading in the Latino/a teenager, a finding with implication for how to engage the Latino/a student in literacy. My experience also sheds light on the roles played by the teacher of Latino students and the curriculum, as well as on the use of ethnographic action research as a way to become culturally responsive. This research adds to the body of knowledge about the experiences of 1.5 and 2nd generation students, including students of dual Latin American heritage, and emphasizes the heterogeneity within the Latino/a culture

A novel role of Drosophila cytochrome P450-4e3 in permethrin insecticide tolerance

The exposure of insects to xenobiotics, such as insecticides, triggers a complex defence response necessary for survival. This response includes the induction of genes that encode key Cytochrome P450 monooxygenase detoxification enzymes. Drosophila melanogaster Malpighian (renal) tubules are critical organs in the detoxification and elimination of these foreign compounds, so the tubule response induced by dietary exposure to the insecticide permethrin was examined. We found that expression of the gene encoding Cytochrome P450-4e3 (Cyp4e3) is significantly up-regulated by Drosophila fed on permethrin and that manipulation of Cyp4e3 levels, specifically in the principal cells of the Malpighian tubules, impacts significantly on the survival of permethrin-fed flies. Both dietary exposure to permethrin and Cyp4e3 knockdown cause a significant elevation of oxidative stress-associated markers in the tubules, including H2O2 and lipid peroxidation byproduct, HNE (4-hydroxynonenal). Thus, Cyp4e3 may play an important role in regulating H2O2 levels in the endoplasmic reticulum (ER) where it resides, and its absence triggers a JAK/STAT and NF-κB-mediated stress response, similar to that observed in cells under ER stress. This work increases our understanding of the molecular mechanisms of insecticide detoxification and provides further evidence of the oxidative stress responses induced by permethrin metabolism

Housing cycles in the major euro area countries.

The recent burst of the house price bubble in the United States and its spillover effects on real economies worldwide has rekindled the interest in the role of housing in the business cycle. In this paper, we investigate the relationships between housing cycles among the four major euro area countries (Germany, France, Italy and Spain) over the sample 1980q1 – 2008q4. Our main findings are that GDP cycles between 1.5 and 8 years show a high degree of comovement across these four countries, reflecting trade linkages. In contrast comovements in housing market cycles between 1.5 and 8 years are much weaker, idiosyncratic factors playing a major role. House prices are even less related across countries than quantities (residential investment, building permits, housing starts …). We find however much stronger relationships since 1999, i.e. in the common monetary policy period.Housing cycles, synchronisation measures, euro area countries.

Chloride channels in stellate cells are essential for uniquely high secretion rates in neuropeptide-stimulated Drosophila diuresis

Epithelia frequently segregate transport processes to specific cell types, presumably for improved efficiency and control. The molecular players underlying this functional specialization are of particular interest. In Drosophila, the renal (Malpighian) tubule displays the highest per-cell transport rates known and has two main secretory cell types, principal and stellate. Electrogenic cation transport is known to reside in the principal cells, whereas stellate cells control the anion conductance, but by an as-yet-undefined route. Here, we resolve this issue by showing that a plasma membrane chloride channel, encoded by ClC-a, is exclusively expressed in the stellate cell and is required for Drosophila kinin-mediated induction of diuresis and chloride shunt conductance, evidenced by chloride ion movement through the stellate cells, leading to depolarization of the transepithelial potential. By contrast, ClC-a knockdown had no impact on resting secretion levels. Knockdown of a second CLC gene showing highly abundant expression in adult Malpighian tubules, ClC-c, did not impact depolarization of transepithelial potential after kinin stimulation. Therefore, the diuretic action of kinin in Drosophila can be explained by an increase in ClC-a–mediated chloride conductance, over and above a resting fluid transport level that relies on other (ClC-a–independent) mechanisms or routes. This key segregation of cation and anion transport could explain the extraordinary fluid transport rates displayed by some epithelia

The import content of the industrial sectors in Spain

Artículo de revist

Analytical assessment of the load carrying capacity of axially loaded wooden reinforced tubes

As a natural resource, an efficient use of wood should be also a requirement for structural timber design, but the usual structural solid sections do not achieve the required optimal behaviour. The performance of the structural elements (serviceability and strength) depends not only on the material properties, but mainly on the moment of inertia of the cross section. The Timber Construction Institute of Technische Universitát Dresden has developed a process for the manufacture of structural wood profiles. The resulting profiles combine economy, an efficient use of the material and optimal structural performance. They are externally reinforced with composite fibres, which improve the mechanical characteristics of the wood and protect it from weathering. The available experimental tests to axial loading show the outstanding properties of this new technology. Herein, the preliminary model developed to obtain the axial strength of longitudinally compressed tubes is presented. Two different analytical algorithms are discussed and applied. The model adequately predicts the axial strength of fibre reinforced wood profiles. The analytical results are within an error less than 10% to the available experimental results, with a mean error ratio less than 3%

Artichoke by Products as a Source of Antioxidant and Fiber: How It Can Be Affected by Drying Temperature

[EN] The reuse of food industry by¿products constitutes one of the essential pillars of the change from a linear to a circular economic model. Drying is one of the most affordable techniques with which to stabilize by¿products, making their subsequent processing possible. However, it can affect material properties. The objective of this study was to assess the effect of the drying temperature on the drying kinetics and final quality of the main artichoke processing by¿products, bracts and stems, which have never been studied as independent materials. For this purpose, air drying experiments at different temperatures (40, 60, 80, 100 and 120 °C) were carried out. The alcohol insoluble residue (AIR) and the total phenolic content (TPC), antioxidant capacity (AC) and vitamin C (VC) of the fresh and dried samples were determined. The bracts dried faster than the stems, increasing drying rate with temperature. The two by¿products presented relatively large amounts of AIR, the content being higher in bracts, but better functional properties in stems. The TPC, AC and VC values of the dried samples decreased in relation to the fresh samples, with the temperatures of 40 °C (bracts) and 120 °C (stems) being the most adequate for the purposes of preserving these characteristicsThis research was funded by INIA (Spain)-ERDF, grant number RTA2015-00060-C04-02 and RTA2015-00060-C04-03; Science and Innovation Ministry of Spain and grant number PID2019106148RR-C42. The APC was funded by the Science and Innovation Ministry of Spain, grant number PID2019-106148RR-C42.Borsini, AA.; Llavata-Cabrero, B.; Umaña, M.; Carcel, JA. (2021). Artichoke by Products as a Source of Antioxidant and Fiber: How It Can Be Affected by Drying Temperature. Foods. 10(2):1-13. https://doi.org/10.3390/foods10020459S11310

GALENA: tabular DCG parsing for natural languages

[Abstract] We present a definite clause based parsing environment for natural languages, whose operational model is the dynamic interpretation of logical push-down automata. We attempt to briefly explain our design decisions in terms of a set of properties that practical natural language processing systems should incorporate. The aim is to show both the advantages and the drawbacks of our approach.España. Gobierno; HF96-36Xunta de Galcia; XUGA10505B96Xunta de Galcia; XUGA20402B9