Ícaro sobrevuela la región más transparente del aire: Visión de Anáhuac (1915) de Alfonso Reyes Aguierrez, Oscar Martín Mientras México atraviesa las tensiones de una Revolución (1910- 1917), Alfonso Reyes –asentado en la ciudad de Madrid– escribe Visión de Anáhuac [1519] (1915) y se apropia de las trayectorias caminantes de otros. Apoyado en la palabra visión, construye un texto en el que suspende el movimiento del paseante y apela a los pasos que dieron otros viajeros para armar un mapa. El valle de México se visita sin la necesidad de un cuerpo que lo recorra. Los únicos movimientos que se registran en el texto son los de las hojas de los libros en el acto de leer. La operación discursiva apela a la estampa y al libro para fijar el imaginario del continente y fundar una nación. En la arena del combate que supone la Revolución Mexicana, Reyes toma la pluma desde la distancia y, por medio de un ensayo, convierte los espacios en lugares para suturar la violencia.

Mexikanischen Bildern in Walter Benjamins Einbahnstraße Vargas, Mariela Silvana This paper analyses Mexikanische Botschaft and Tiefbau-Arbeiten, two dreams recount by Benjamin in Einbahnstrafie and presents them as forming a diptych in which center Benjamin's antinationalistic and anticlassicist positions appears in it's most critical dimension. The Mexican images question the German classical literary tradition and show the effects of Benjamin's contact with pre-colonial Latin-American cultures through the glasses of the German ethnology of his time.

Nuevos datos zooarqueológicos de Rincón Chico 15, Valle de Yocavil (Catamarca, Argentina) Belotti López de Medina, Carlos Raúl Se presentan los resultados del análisis de la arqueofauna recuperada en las trincheras 3, 4, 5 y 6 del sitio Rincón Chico 15 (Valle de Yocavil, Catamarca, Argentina). Rincón Chico 15 es un complejo de estructuras que funcionó como unidad residencial y taller especializado, habitado entre los siglos XII y XVI DC (Períodos Desarrollos Regionales e Inka). Los datos presentados aquí tienden a corroborar los resultados de análisis anteriores sobre el sitio, pero se detectan algunas divergencias en la estructura taxonómica y etaria del subconjunto Camelidae. La divergencia de resultados para un mismo sitio sugiere la existencia de problemas de muestreo, así como la variabilidad de las prácticas económicas que tuvieron lugar allí.; This article presents the results of an analysis on the archaeofaunal remains from Trenches 3, 4, 5 and 6 of the Rincón Chico 15 site (Yocavil Valley, Catamarca, Argentina). Rincón Chico 15 was a residential unit and a specialist workshop, inhabited mostly from the 12th to 16th Century (Regional Developments and Inka periods). The data presented here largely corroborates the results of previous zooarchaeological research at the site. Nevertheless, when comparing against earlier reports, there was some divergence in taxonomic and age composition of the Camelidae data. These divergent results from the same site, suggest sampling problems, as well as the variability in economic practices that took place at Rincón Chico 15.

In vivo intrabursal administration of bioactive lipid sphingosine-1-phosphate enhances vascular integrity in a rat model of ovarian hyperstimulation syndrome Di Pietro, Mariana; Pascuali, Natalia Marisa; Scotti, Leopoldina; Irusta, Griselda; Bas, Diana Ester; May, Maria; Tesone, Marta; Abramovich, Dalhia Nurit; Parborell, Maria Fernanda Agustina Can the bioactive lipid sphingosine-1 phosphate (S1P) act as an endothelial barrier-enhancing molecule and, in turn, restore the vascular integrity and homeostasis in a rat model of ovarian hyperstimulation syndrome (OHSS). In vivo administration of S1P may prevent the early onset of OHSS and decrease its severity. Although advances in the prediction and treatment of OHSS have been made, complete prevention has not been possible yet. S1P in follicular fluid from women at risk of developing OHSS are lower in comparison from women who are not at such risk and administration of S1P in an OHSS rat model decreases ovarian capillary permeability.

Proposals to conserve the names balansia claviceps against ephelis mexicana, claviceps paspali against ustilagopsis deliquescens, and tolypocladium inflatum against cordyceps subsessilis (ascomycota: Sordariomycetes: Hypocreales) Rossman, Amy Y.; Allen, W. Cavan; Castlebury, Lisa A.; Spatafora, Joseph; Romero, Andrea Irene; Verkley, Gerard In the course of updating the scientific names of plant-associatedfungi in the U.S. National Fungus Collections Databases to conformwith the requirement of one scientific name for each fungal species(ICN, McNeill & al. in Regnum Veg. 154. 2012), several scientificnames currently in use were identified that should be changed to the oldest epithet in the oldest generic name. However, the names ofthese economically important fungi are in such widespread use that to change them would be disruptive. These names are herein proposedfor conservation, following Art. 14.2

Las trabajadoras invisibles: experiencias laborales de mujeres migrantes en Argentina Magliano, Maria Jose En base a un trabajo de campo cualitativo sostenido en el tiempo, este artículo se propone indagar en las experiencias laborales de mujeres migrantes de origen peruano en la ciudad de Córdoba (Argentina). En particular, se reconstruyen las especificidades del trabajo doméstico y del cuidado remunerado y del trabajo textil, en tanto espacios de inserción laboral donde las mujeres migrantes sudamericanas en general y peruanas en particular se encuentran sobrerrepresentadas. El texto se organiza en torno al análisis de tres dimensiones que adquirieron centralidad en el transcurso del trabajo de campo: la maternidad y las formas de organización familiar en contextos migratorios, los efectos de la inestabilidad que caracterizan a estas inserciones laborales en la vida cotidiana de las mujeres migrantes y sus familias, y los sentidos de la invisibilidad laboral en relación con las condiciones de explotación que enfrentan. El estudio de estas inserciones laborales, que se distinguen por su precariedad e informalidad, ofrece herramientas para reflexionar críticamente sobre los procesos de etnización y jerarquización laboral presentes en Argentina. En pos de pensar la articulación entre migraciones femeninas y experiencias laborales, se recuperan los aportes teóricos de las perspectivas de género e interseccional, las cuales resultan potencialmente útiles para examinar las implicancias de las clasificaciones sociales (sean de género, etnicidad, raza, clase, origen nacional) en los mercados de trabajo.; Com base em uma pesquisa de campo qualitativa e sustentada ao longo do tempo, este artigo propõe-se pesquisar as experiências do trabalho das mulheres de origem peruano na cidade de Córdoba (Argentina). Especificamente, o artigo tenta reconstruir as especificidades do trabalho doméstico, do trabalho dos cuidados ao domicílio privado e do trabalho têxtil, enquanto áreas onde as mulheres migrantes da América do Sul em geral, e peruanas em particular, se encontram sobre representadas. O texto está organizado em torno da análise de três dimensões centrais que surgiram no decorrer do trabalho de campo: a maternidade e as formas de organização familiar num contexto migratório; os efeitos da instabilidade que caracterizam estas inserções de trabalho na cotidianidade das mulheres e suas famílias; e os sentidos de invisibilidade que surgem das condições da exploração que enfrentam em seus trabalhos. O estudo destas inserções de trabalho –que se distinguem pela precariedade e informalidade–apresenta ferramentas para refletir criticamente sobre os processos de etnicização e hierarquia do trabalho na Argentina. Procurando refletir sobre a articulação entre migrações femininas e experiências do trabalho, recuperam-se contribuições teóricas das perspectivas de gênero e interseccional, potencialmente interessante para examinar as implicações das classificações sociais (sexo, etnia, raça, classe, nacionalidade) nos mercados do trabalho.

Tillage effects on labile pools of soil organic nitrogen in a semi-humid climate of Argentina: A long-term field study Martinez, Juan Manuel; Galantini, Juan Alberto; Duval, Matias Ezequiel; López, Fernando Manuel Tillage systems strongly affect nitrogen (N) mineralization. However, there is still only limited information on the relationship between N in labile soil organic matter (SOM) fractions and crop N uptake under different tillage systems in areas with poor water availability. This study discusses the long-term effect of two tillage systems on i) the N-content in labile organic matter fractions and their relationship with the N mineralization potential at three depths (0?5; 0?10 and 0?20 cm), ii) the factors that affect the N mineralization potential, and iii) the relationship between potentially mineralizable N (N0) and crop N uptake in a semi-humid climate. In a long-term experiment, a Typic Argiudoll was sampled under two contrasting tillage systems: no-tillage (NT) and conventional tillage (CT). The soil sampling was performed over four years of the crop sequence (2003, 2009, 2010 and 2011) when the plots were sown with winter wheat (Triticum aestivum L.). They were analyzed for N0 in the form of anaerobic N, soil organic nitrogen (SON), physically separated SOM fractions and crop N uptake. Higher values of SON and labile soil N fractions were observed under NT at all three depths. Significant differences in N0 were found between the tillage systems, with greater values under NT. Significant (P < 0.05) and positive correlations between N0 and fine particulate organic carbon (fPOM-C) (r ≥ 0.66) were found in CT and in NT at the three depths, whereas highly significant (P < 0.001) and negative relationships between N0 and fine particulate organic N (fPOM-N) (r ≥ −0.83) were found under both tillage systems at 0?5 and 0?10 cm. The most pronounced difference in these relationships between tillage systems was observed at the 0?5 cm soil depth. Significant correlations of N0 with residue input from previous crops and the fallow period were observed under both tillage systems and for all three depths. Regarding the relationships between N0 and wheat N uptake, no significant correlations were found for any tillage system or depth. Soil organic N fractions were shown to be strongly influenced by the residue input from the previous crop and by variable weather conditions during the fallow period. The higher content of SON fractions under NT was associated with a higher N mineralization potential, however, it did not result in increased N availability and N uptake by wheat, because of climatic conditions during the crop growing season.

A Valuable QTL for Fusarium Head Blight Resistance from Triticum turgidum L. ssp. dicoccoides Has a Stable Expression in Durum Wheat Cultivars Soresi, Daniela Soledad; Zappacosta, Diego Carlos; Garayalde, Antonio Francisco; Irigoyen, I.; Basualdo, Jessica; Carrera, A. Langdon(Dic-3A)-10 line carrying the QTL Qfhs.ndsu-3AS from T. turgidum ssp.dicoccoides that confers Type II resistance to Fusarium head blight (FHB) was crossed with Argentinean durum wheat cultivars. F4 progeny were screened with the microsatellite locus Xgwm2, tightly linked to the Qfhs.ndsu-3A region. Reaction of these plants and parents to FHB was evaluated at 7, 14 and 21 days post-inoculation (dpi) with F. graminearum; severity (% symptomatic spikelets/spike) and AUDPC (area under disease progress curve) were calculated. F4 progeny carrying the resistance allele in heterozygous or in homozygous condition showed significantly lower scab damage at 21 dpi and slower progress of disease than cultivated parents. Our results indicate that the resistance Qfhs.ndsu-3AS has a stable dominance expression in genetic backgrounds of durum cultivars and demonstrate that the linked microsatellite is an effective molecular tool for resistance screening. This work offers valuable information for Qfhs.ndsu-3AS utilization in wheat breeding programs.

Diversity and distribution of epiphytic bromeliads in a Brazilian subtropical mangrove Sousa, Mariana De; Delevati Colpo, Karine It is not unusual to find epiphytic bromeliads in mangroves, but most studies on mangrove vegetation do not record their presence. This study aimed to evaluate the diversity and distribution of epiphytic bromeliads in a subtropical mangrove. The richness, abundance and life form (atmospheric and tank) of bromeliads were recorded and compared among host tree species and waterline proximity. The effects of diameter and height of host trees on the abundance of bromeliads were also assessed. The mangrove was composed of Avicennia schaueriana, Laguncularia racemosa and Rhizophora mangle. We recorded seven bromeliad species of the genera Tillandsia and Vriesea. The waterline proximity did not affect the abundance or diversity of bromeliads, but atmospheric forms were predominant near the waterline, whereas tank bromeliads were more frequent in the interior of the mangrove. The three mangrove species hosted bromeliads, but L. racemosa was the preferred host. The species composition showed that the distribution of bromeliads is more related to the host species than to the distance from the waterline. Bromeliad abundance increased with tree size. Bromeliads can be biological indicators of ecosystem health; therefore, inventories and host tree preferences are necessary knowledge for an adequate management of sensitive ecosystems as mangroves.

Influence of bottleneck lengths and position on simulated pedestrian egress Parisi, Daniel Ricardo; Patterson, Germán Agustín In this paper, the problem of pedestrian egress under different geometries is studied by means of two numerical models. The length of the bottleneck after the exit and the distance of the exit to the lateral wall of a squared room are investigated. Both models show that an increase in the bottleneck length increases the evacuation time by more than 20%, for any exit position. Hence, a bottleneck length tending to zero is the best choice. On the contrary, the results of moving the exit closer to the lateral wall are different in both models and, thus, its convenience cannot be stated. To unveil whether this layout modification is favorable, experimental data are required. Moreover, the discrep- ancy between models indicates that they should be validated considering several scenarios.

Phylogenetic relationships of Hydnum peroxydatum support the synonymy of Hydnochaete with Hymenochaete (Hymenochaetaceae, Agaricomycetes) Baltazar, Juliano; Pildain, María Belén; Gorjón, Sergio P.; Silveira, Rosa Mara Borges Da; Rajchenberg, Mario A combined dataset of rDNA ITS and LSU sequences was used to infer the phylogenetic relationships of Hydnochaete peroxydata (≡ Hydnum peroxydatum), the type species of Hydnochaete. The species was retrieved nested within the Hymenochaete s. str. clade; therefore Hydnochaete is regarded as a synonym of Hymenochaete and the new combination Hymenochaete peroxydata is proposed.

El Fondo Fiduciario de Promoción de la Industria del Software (FONSOFT) y la Secretaría de Ciencia y Tecnología de la provincia de Salta invitan a participar de una capacitación sobre instrumentos de financiamiento.

Probing the catalytic activity of sulfate-derived Pristine and post-treated porous TiO2(101) anatase mesocrystals by the oxidative desulfurization of dibenzothiophenes Rivoira, Lorena Paola; Martinez, Maria Laura; Falcon, Horacio; Beltramone, Andrea Raquel; Campos-Martin, Jose M.; García Fierro, José Luis; Tartaj, Pedro Mesocrystals (basically nanostructures showing alignment of nanocrystals well beyond crystal size) are attracting considerable attention for modeling and optimization of functionalities. However, for surface-driven applications (heterogeneous catalysis), only those mesocrystals with excellent textural properties are expected to fulfill their potential. This is especially true for oxidative desulfuration of dibenzothiophenes (hard to desulfurize organosulfur compounds found in fossil fuels). Here, we probe the catalytic activity of anatases for the oxidative desulfuration of dibenzothiophenes under atmospheric pressure and mild temperatures. Specifically, for this study, we have taken advantage of the high stability of the (101) anatase surface to obtain a variety of uniform colloidal mesocrystals (approximately 50 nm) with adequate orientational order and good textural properties (pores around 3-4 nm and surface areas around 200 m2/g). Ultimately, this stability has allowed us to compare the catalytic activity of anatases that expose a high number of aligned single crystal-like surfaces while differing in controllable surface characteristics. Thus, we have established that the type of tetrahedral coordination observed in these anatase mesocrystals is not essential for oxidative desulfuration and that both elimination of sulfates and good textural properties significantly improve the catalytic activity. Furthermore, the most active mesocrystals have been used to model the catalytic reaction in three-(oil-solvent-catalyst) and two-phase (solvent-catalyst) systems. Thus, we have been able to observe that the transfer of DBT from the oil to the solvent phase partially limits the oxidative process and to estimate an apparent activation energy for the oxidative desulfuration reaction of approximately 40 kJ/mol in the two-phase system to avoid mass transfer limitations. Our results clearly establish that (101) anatase mesocrystals with excellent textural properties show adequate stability to withstand several post-treatments without losing their initial mesocrystalline character and therefore could serve as models for catalytic processes different from the one studied here.

El Fondo Argentino Sectorial (FONARSEC) anuncia el listado de evaluadores de la convocatoria FSTics 2016 - Sistema de Alerta Temprana de Catástrofes.

Esta iniciativa, que recibe proyectos hasta el 16 de junio, entregará $150.000 al trabajo ganador y una mención especial de $80.000 de Fundación Arcor.

Size, angular momentum and mass for objects Anglada, Pablo Ruben; Gabach Clement, Maria Eugenia; Ortiz, Omar Eduardo We obtain a geometrical inequality involving the ADM mass, the angular momentum and the size of an ordinary, axially symmetric object. We use the monotonicity of the Geroch quasi-local energy on 2-surfaces along the inverse mean curvature flow. We also compute numerical examples to test the robustness of our hypotheses and results.

El Fondo Tecnológico Argentino (FONTAR) anuncia los resultados del proceso de evaluación y reconsideración para las convocatorias ANR 3500 2016 C1, C2 y C3 mediante Resolución N°209, 216 y 220/17.

El Fondo Tecnológico Argentino (FONTAR) anuncia los resultados de los procesos de evaluación y reconsideración para las convocatorias ANR P+L 2016 C1 y C2 mediante Resolución N°212, 208, 2010 y 211 /17.

El Fondo Tecnológico Argentino (FONTAR) anuncia los resultados del proceso de evaluación y reconsideración para la convocatoria ANR Social 2016 C2 mediante Resolución de Directorio N°214 y 215/17.

El Fondo Tecnológico Argentino (FONTAR) anuncia los resultados del proceso de evaluación para la ventanilla ASIS - TECi mediante Resolución de Directorio N°206 y 207/17.