Los efectos de la cuarentena por coronavirus (Covid-19) en los hábitos alimentarios en Argentina; Impact of the quarantine by coronaviruses (Covid-19) on food habits in Argentina Sudriá, María Emilce; Andreatta, María Marta; Defagó, María Daniela Introducción: debido a la pandemia del coronavirus humano COVID-19, se implementaron estrategias preventivas basadas en el aislamiento social preventivo y obligatorio (cuarentena) para reducir la transmisión en la comunidad, lo cual ha impactado en el estilo de vida y en los hábitos alimentarios.Objetivo: analizar el consumo alimentario durante el período de cuarentena en Argentina.Material y Método: se desarrolló un estudio observacional, exploratorio, de corte transversal. Se diseñaron dos cuestionarios de encuesta para ser completados en formato online, uno para la población que consume carnes (PC) y otro para la población veg(etari)ana (PV). Se incluyeron preguntas de opción múltiple sobre características sociodemográficas, peso y talla autoreferidos, antecedentes de enfermedades crónicas, ingesta habitual de alimentos y su percepción de modificación durante el período de aislamiento social. A 12 días de decretada la cuarentena, se hizo un primer corte en el relevamiento de datos para realizar un análisis descriptivo.Resultados: la muestra quedó conformada por 2518 personas que contestaron el formulario (2201 PC y 317 PV). Se observó una modificación en los hábitos alimentarios en el período de encierro en ambos grupos, caracterizada principalmente por un descenso en el consumo de alimentos con potencial inmunomodulador como frutas y verduras y un aumento en la ingesta de alimentos desaconsejados como panificados, golosinas, bebidas azucaradas y alcohólicas.Conclusiones: es fundamental considerar el impacto acontecido en el estilo de vida y específicamente en la alimentación, ya que dietas poco saludables podrían aumentar la susceptibilidad a COVID-19 y afectar la recuperación.

Heroínas feministas en la historieta: Género, memoria y disidencia sexual en Dora de Minaverry Saxe, Facundo Nazareno Este artículo aborda la emergencia de protagonistas / heroínas en la historieta argentina reciente, en particular el caso del cómic Dora de Ignacio Minaverry que cuenta hasta 2018 con tres tomos en circulación. Se analiza esta saga como parte de una conste-lación de apariciones de protagonistas mujeres sexo-disidentes en la historieta argentina reciente, diferente a la posición ocupada por personajes mujeres en épocas anteriores en la historieta. En ese sentido, el personaje de Dora podría apreciarse como parte de una producción de heroínas del siglo XXI en la historieta argentina. Éstas a diferencia de pro-tagonistas femeninas de otros períodos son parte constitutiva de una modalidad cercana a una perspectiva de sexo-género feminista para el desarrollo de los relatos visuales propios del cómic. Dora es un personaje que construye un camino diferente y en algún sentido inusual para la historieta argentina tradicional y heteropatriarcal, se trata de una heroína de tiempos feministas, sexo-disidente y cuya historieta aborda temas de género. En ese marco, el cómic cruza la reflexión de una perspectiva de sexo-género con la memoria y temáticas icónicas de la historieta como el cómic de espías o el abordaje del pasado trau-mático. Dora es parte de una generación que muestra otras posibilidades para el cómic argentino, por lo que su aparición podría implicar un cambio en el horizonte de los relatos historietísticos argentinos. Temas como el afecto por fuera de la heteronorma, la disiden-cia sexual, el aborto, la identidad, la amistad, el lugar de la mujer en la historia, entre otros, forman parte de las aventuras de Dora hasta el momento.; This paper deals with the emergence of protagonists / heroines in the recent ar-gentin comic, in particular the case of Dora, create by Ignacio Minaverry and that counts until 2018 with three volumes in circulation. In this paper, this saga will be analyzed as part of a constellation of protagonic appearances by sex-dissident women in the recent argentin comic, wich is different from the position occupied by female characters in other times in the comic. In that sense, the character of Dora could be seen as part of a production of heroines of the 21st century in the argentine comic industrie. Unlike female protagonists of the heterosexist male tradition, the Dora's comic is produced from a feminist sex-gender perspective. Dora is a character who constructs a different way for the traditional and het-eropatriarchal argentin comic, she is a heroine of feminist times and whose adventures deals with gender issues. In this context, the comic crosses the reflection of a sex-gender perspective with the memory and iconic themes of the comic strip, such as the spy comic or the approach to the traumatic past. Dora is part of a generation that shows other pos-sibilities for the argentine comic, so the appearance of characters like Dora could imply a change in the horizon of Argentine historical stories. Topics such as affection outside the heteronorm, sexual dissidence, abortion, identity, friendship, the place of women in his-tory, among others, are part of the adventures of Dora in these three volumes.; Este artigo trata do surgimento de protagonistas / heroínas no recente comic argentino, em particular o caso da história em quadrinhos Dora, feita por Ignacio Mina-verry e que conta até 2018 com três volumes em circulação. Neste artigo, essa saga será analisada como parte de uma constelação de aparições de mulheres protagonistas sexo--dissidentes no recente comic argentino, diferente da posição ocupada por personagens femininas em épocas anteriores nos quadrinhos. Nesse sentido, o caráter de Dora poderia ser visto como parte de uma produção de heroínas do século XXI no comic argentino. Es-tes, ao contrário de protagonistas femininos de outros períodos, são parte constitutiva de uma modalidade próxima a uma perspectiva feminista de sexo-gênero para o desenvolvi-mento das próprias histórias visuais da história em quadrinhos. Dora é uma personagem que constrói um desenho diferente e incomum para o comic tradicional e heteropatriarcal argentino, ela é uma heroína de tempos feministas, sexo-dissidente e cuja história em quadrinhos lida com questões de gênero. Nesse contexto, a obra cruza a reflexão de uma perspectiva de sexo-gênero com a memória e os temas icônicos da história em quadri-nhos, como o comic dos espiões ou a abordagem do passado traumático. Dora faz parte de uma geração que mostra outras possibilidades para o comic argentino, então a aparição de personagens como Dora poderia implicar uma mudança no horizonte das histórias em quadrinhos argentinas. Temas como afeto fora do heteronorma, dissidência sexual, aborto, identidade, amizade, o lugar da mulher na história, entre outros, fazem parte das aventuras de Dora nesses três volumes.

The petrogenesis of back-arc magmas, constrained by zircon O and Hf isotopes, in the Frontal Cordillera and Precordillera, Argentina Poole, Gregory H.; Kemp, Anthony I. S.; Hagemann, Steffen G.; Fiorentini, Marco L.; Jeon, Heejin; Williams, Ian S.; Zappettini, Eduardo Osvaldo; Rubinstein, Nora Alicia The Andean margin of the South American continent has been magmatically and tectonically active for over 330 million years. It is the type location where “Cordilleran-type” magmatism and orogenesis are manifest. In Argentina and Chile, between the latitudes of 28° and 40° S, magmatism related to the Gondwanan “Cordilleran-type” orogeny is reflected in a series of Carboniferous to Triassic intrusions. A comprehensive model exists for the petrogenesis of such magmas in Chile, however there is relatively little understanding of the nature and timing of Permo-Triassic magmatism in the Frontal Cordillera and Precordillera in Argentina. To address this, we present a new dataset of in situ zircon U–Pb, O and Hf isotopes from 15 felsic intrusions from Argentina. Zircon geochronology shows that magmatism in this region commenced at ca. 285 Ma and continued until ca. 250 Ma. Zircon O and Hf isotopes suggest that the oldest Permian magmas were derived from young supracrustal sources, with elevated δ18O (~ 8.5 to 7.5‰) and negative εHf values (~ − 1 to − 3 εHf). The emplacement of these magmas was coeval with the formation of mantle-derived magmas characterised by mantle-like δ18O (~ 6.0 to 5.5‰) and moderately positive εHf values (~ 4 to 1 εHf). As magmatism continued, transitional isotope signatures became predominant as melts of these disparate sources interacted and hybridised. It is proposed that under a compressional regime, mantle-derived magmas were halted in the lower continental crust, where they exchanged heat and volatiles with an older fertile lithosphere to generate melts from supracrustal sources. A shift in the stress regime at ca. 285 Ma permitted both crustally derived and juvenile mantle-derived magmas to exploit newly formed conduits to rise into the upper crust. A regional compilation of zircon O and Hf isotopes from felsic igneous rocks reveals a coherent secular trend over ~ 100 million years, where the oldest magmatism exhibits a dominant supracrustal component and younger magmas progressively (over 50 Ma) transition towards juvenile mantle-like isotopic compositions. This new dataset from Argentina fills a significant gap in the previous regional models between 285 and 250 Ma and documents the isotopic response of magmas produced in back-arc regions to a transition between compression and extensional/neutral stress regimes. These results give insight into the generation of new, or recycling of, continental crust in a back-arc setting and how the transition from compression to extension is imperative for ore-forming magmas to reach the upper crust.

El lujo tecnológico: Distinción y esnobismo en un contexto de prohibición: el consumo de Apple en Argentina (2015-2018) Correa, María Eugenia; Romani, Matias El presente trabajo pretende discutir el alcance de la categoría de “distinción” y su aplicación problemática al mundo de la tecnología digital. Para ello toma como universo de análisis a los consumidores de Apple en la Argentina durante el último trienio (2015- 1018), con el fin de comprender el impacto que impuso una circulación restringida de ciertos bienes sobre los valores corporativos que caracterizan a la marca. La hipótesis que se pretende demostrar es que recién a partir del 2010 –cuando se endurecieron las políticas en materia de importación de bienes tecnológicos– que la experiencia de consumo de Apple comenzó a percibirse como una estrategia de distinción entre los consumidores argentinos.; The present work intends to discuss the scope of the category of “distinction” and its problematic application to the world of digital technology. For this, it takes as a universe of analysis the Apple consumers in Argentina during the last three years (2015-2018), in order to understand the impact that imposed a restricted circulation of certain goods on the corporate values that characterize the brand. The hypothesis that is tried to demonstrate is that as of the 2010 –when the policies in the matter of importation of technological goods hardened– that the Apple’s consumer experience began to be perceived like a strategy of distinction among the Argentine consumers.; O presente trabalho pretende discutir o alcance da categoria de “distinção” e sua aplicação problemática ao mundo da tecnologia digital. Para isso, toma-se como universo de análise os consumidores da Apple na Argentina durante os últimos três anos (2015- 2018), a fim de compreender o impacto que impunha uma circulação restrita de certos bens nos valores corporativos que caracterizam a marca. A hipótese que se tenta demonstrar é que a partir de 2010 –quando as políticas em matéria de importação de bens tecnológicos se endureceram– que a experiência de consumo da Apple começou a ser percebida como uma estratégia de distinção entre os consumidores argentinos.

Fefferman–Stein Inequalities for the Hardy–Littlewood Maximal Function on the Infinite Rooted k-ary Tree Ombrosi, Sheldy Javier; Rivera Ríos, Israel Pablo; Safe, Martin Dario In this paper, weighted endpoint estimates for the Hardy–Littlewood maximal function on the infinite rooted k-ary tree are provided. Motivated by Naor and Tao [ 23], the following Fefferman–Stein estimate w({x∈T:Mf(x)>λ})≤cs1λ∫T|f(x)|M(ws)(x)1sdxs>1 is settled, and moreover, it is shown that it is sharp, in the sense that it does not hold in general if s=1⁠. Some examples of nontrivial weights such that the weighted weak type (1,1) estimate holds are provided. A strong Fefferman–Stein-type estimate and as a consequence some vector-valued extensions are obtained. In the appendix, a weighted counterpart of the abstract theorem of Soria and Tradacete [ 38] on infinite trees is established.

Carbonyl stretch of CH…O hydrogen-bonded methyl acetate in supercritical trifluoromethane Inafuku, Maximiliano Nelson; Marceca, Ernesto José Infrared spectroscopy in the gas phase was used to study the formation reaction of the CH⋯O hydrogen bonding complex involving the CH group of trifluoromethane, as a hydrogen donor, and the carbonyl group of methyl acetate, as a hydrogen acceptor, under different (T, p) conditions. The hydrogen-bonded carbonyl stretch of the molecular pair was monitored in dilute mixtures of methyl acetate in trifluoromethane at near-critical temperatures, from gas- to liquid-like densities. In the gas region, it was possible to discriminate the carbonyl signal of the hydrogen-bonded complex from that of the free ester and have access to their relative concentration. The equilibrium constant of the hydrogen bonding reaction and the standard enthalpy and entropy changes in the process were determined using the spectroscopic data. CH⋯O bonding was favored by lowering temperature or pressurizing F3CH in the mixture, remaining essentially no free carbonyl groups about the critical density. The carbonyl band of the hydrogen-bonded pair appeared as a single symmetric peak up to liquid-like densities, suggesting that the 1:1 methyl acetate-trifluoromethane complex has the most abundant stoichiometry. Spectral features as frequency shift and bandwidth of the hydrogen-bonded carbonyl were studied as a function of temperature and solvent-density. A bathochromic (red) vibrational shift was registered for the bound carbonyl band against density, with a sudden change in behavior in the near-critical region, while the width of this band remains mostly unresponsive.

Electroformation of coatings modified with silver on magnesium alloys for biomedical applications Loperena, Ana Paula; Forero Lopez, Ana Deisy; Brugnoni, Lorena Inés; Lehr, Ivana Leticia; Saidman, Silvana Beatriz Three different films modified with silver species were considered to enhance the corrosion resistance of AZ91D Mg alloy and to impart its surface with antibacterial activity. First, coatings were electrodeposited under potentiostatic conditions in electrolyte solutions containing Na2MoO4 and/or Ce(NO3)3 as main compounds, and H2O2, ascorbic acid or citric acid as additives. Incorporation of silver species was done by immersion of the samples in AgNO3 solutions. The obtained modified films were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The corrosion protection properties of the films were examined in a simulated physiological solution by open circuit measurements, linear polarization and electrochemical impedance spectroscopy (EIS). The antibacterial effect of the coatings was evaluated using Escherichia coli bacteria. Cerium and molybdenum-based coating modified with silver provides superior antibacterial and anticorrosive properties compared to the other films studied.

La segmentación del trabajo en la Argentina: Un análisis de movilidad para los años de la post convertibilidad; Segmentation of work in Argentina: An analysis of mobility for the post-convertibility years Zuazua, Noemí Giosa; Fernández Massi, Mariana este artículo aborda la capacidad de los sectores de actividad con mejores empleos para absorber los empleos de subsistencia en un contexto de reducción de la tasa de desempleo y crecimiento de la actividad en la argentina. con este propósito se analizó la movilidad de los trabajadores entre cuatro segmentos de empleo. se construyeron matrices de transición anuales a partir de los datos de la encuesta permanente de Hogares correspondientes a los segundos trimestres de cada año, y se agruparon en dos períodos: 2004-2007, con fuerte crecimiento del empleo, y 2010-2013, un período menos dinámico. los resultados obtenidos sugieren que durante el primer período hubo transiciones desde los segmentos de micro producción hacia el segmento mediano/grande, pero las probabilidades de acceder a esos puestos fue mayor para quienes se encontraban en el segmento micro productivo. si bien se observa un leve proceso de movilidad ascendente hacia empleos de mejor calidad, también se observan transiciones desde la inactividad o desempleo hacia actividades de subsistencia, que amplían los excedentes de fuerza de trabajo.; this article deals with the capacity of the activity sectors with better working conditions in order to absorb employment of subsistence in a context of reduction of the unemployment rate and growth of the argentinian economy. to this end, four segments of the workers´ mobility were analyzed. annual transition matrices were calculated on the basis of the data obtained from the epH (permanent Household survey) during the second trimesters of each year, where two periods were grouped together: 2004-2007 –characterized by the dynamic growth of employment– and 2010-2013 –a period of low creation of jobs. the results reveal that during the first period there were transitions from the micro-production segments towards the large/medium segment, but the probabilities of having access to these jobs were higher for workers belonging to the micro-productive sector. although there is a slight upward mobility process towards jobs of higher quality, it is also observed that there is mobility from inactivity or unemployment towards subsistence activities, which extends the surplus of the working force.

The Relationship between a Western Amazonian Society and Domesticated Sedges (Cyperus spp.) Kujawska, Monika; Zamudio, Fernando; Albán Castillo, Joaquina; Sosnowska, Joanna The article discusses the relationships between the Ashaninka people from Peruvian Amazonia and the domesticated sedges (Cyperus spp.) cultivated in almost every Ashaninka home garden, and mostly exchanged within family circles. An over-differentiation phenomenon is observed, in which four species of Cyperus correspond to 86 folk species. The names of folk species are formed by secondary lexemes, composed of a semantically active constituent and a generic suffix (i)benki. The names contain mnemonic cues to differentiate otherwise morphologically similar plants, and their meanings correspond to Ashaninka ontological categories, thus revealing many levels of connectivity between them and non-humans. The wide scope of specific uses (approx. 60 registered) assigned to Cyperus spp. is only partly supported by phytochemicals and ergot alkaloids in the fungus-infested sedges. The key to understanding the ibenki?s (Cyperus) agency lies in local cosmologies, in which domesticated sedges are viewed as plant-persons and kin. The Ashaninka are engaged in producing the bodies of their kin, the ibenki. Simultaneously, ibenki are powerful allies in restoring harmonious social relations and protecting people against the intentional actions of other humans and non-humans.; El presente artículo analiza las relaciones entre el grupo asháninka de la Amazonía peruana y las juncias domesticadas (Cyperus spp.). Estas son plantas cultivadas en casi todos los huertos hogareños asháninka, y son mayormente intercambiadas dentro de los círculos familiares. Se observa un fenómeno de sobrediferenciación, en el que cuatro especies de Cyperus corresponden a 86 taxones vernáculos (etnoespecies). Los nombres de los taxones vernáculos están formados por lexemas secundarios, compuestos por un componente semánticamente activo y un sufijo genérico (i)benki. Los nombres contienen señales mnemotécnicas para diferenciar plantas morfológicamente similares, y sus significados corresponden a categorías ontológicas asháninka, revelando diversos niveles de conectividad entre los asháninkay no humanos. La amplia gama de usos específicos (aprox. 60 registrados) asignados a Cyperus spp. sólo están parcialmente respaldados por factores fitoquímicos propios de los alcaloides del cornezuelo de centeno que se encuentran en los hongos que infestan las juncias domesticadas. La clave para entender la agencia de los ibenki (Cyperus) se encuentra en las cosmologías locales, en las que las juncias domesticadas se consideran personas-plantas y parientes de los asháninka. En este sentido los asháninka se dedican a producir los cuerpos de sus parientes, los ibenki. Simultáneamente, los ibenki son aliados poderosos necesarios para restaurar relaciones sociales armoniosas y proteger a las personas contra las acciones intencionales de otros humanos y no humanos

Traits and impacts of introduced species: a quantitative review of meta-analyses Boltovskoy, Demetrio; Correa, Nancy Myriam; Burlakova, Lyubov E.; Karatayev, Alexander Y.; Thuesen, Erik V.; Sylvester, Francisco; Paolucci, Esteban Marcelo Despite significant growth in the information on introduced species (NIS), agreement on their comparative fitness and effects on native (NAT) communities is heterogeneous. Hypotheses aimed at explaining their fitness and impacts are as often supported as challenged. In order to investigate whether origin is associated with fitness or impact, we reviewed 72 meta-analyses of trait differences between NAT and NIS, and impacts of NIS on NAT and the environment, covering terrestrial and aquatic organisms. Interpretation of the trends was based on overall meta-analysis conclusions, and on numbers of point estimates (individual effect sizes) within and across studies. Mixed results were found in 44% of the studies. Higher NIS fitness and significant impacts were found in 31%, and 25% concluded that significant outcomes are largely absent. Point estimates showed that non-significant outcomes (57%) are more common than significant ones. Two thirds yield mixed trait differences and impacts, or do not support the concept that NIS are more fit or have negative effects on NAT. When trait differences or impacts are significant, NAT are usually less fit, or are negatively impacted, but this trend is influenced by the fact that most surveys are based on the most damaging invasive species.

Influence of various parameters in the seismic soil-structure interaction response of a nuclear power plant de Borbon, Fernanda Maria; Domizio, Martin Norberto; Ambrosini, Ricardo Daniel; Curadelli, Raul Oscar This paper presents a numerical study of the influence of various parameters on the seismic response of the CAREM-25 nuclear power plant (NPP) located in Argentina. The influence of soil stiffness, structure-soilstructure interaction (3SI), and infill soil stiffness are studied. Considering the available analysis capabilities, a full 3D methodology was adopted (direct method). Two soil profiles were used in order to quantify the influence of the soil on the structural response. An engineered rockfill was also used in order to study the influence of infill soil stiffness. Three artificial records with three components each were used as free field input. These records were obtained from the site design spectra. The turbo-group building was approximately modelled in order to consider 3SI. Finally, all live loads as well as the water in pools were included in the model. Design guides for this type of problem are given for all the elements of the model. When comparing flexible soil with stiff soil, important reductions of the maximum absolute acceleration value are obtained by flexible soil. Moreover, the horizontal maximum accelerations are remarkably amplified in height in the case of stiff soil. The influence of the proximity of the turbo-group building (3SI) on the dynamic response of the reactor building is negligible. Finally, the influence of infill soil stiffness is also negligible.

Las Escuelas Normales creadas para formar maestros/as rurales (Argentina, 1903-1952); Normal Schools created to train rural teachers (Argentina, 1903-1952) Rodríguez, Laura Graciela En este artículo analizaremos los distintos intentos de creación de Escuelas Normales destinadas a formar maestros/as rurales, impulsados por el Estado nacional, desde 1903 hasta 1952, haciendo foco en el curso de magisterio del nivel medio. Con base en la lectura de documentos oficiales, pretendemos mostrar que el proceso de creación de estas Normales puede ser comprendido en tres etapas (1903-1914; 1910-1930; y 1932-1952) que veremos por separado en cada apartado. Estudiaremos las distintas denominaciones que recibieron estas escuelas en cada momento (Regionales, de Preceptores y de Adaptación Regional) y los cambios que las afectaron a lo largo del tiempo.; In this article we will discuss different intents of creation of Normal Schools, destined to train rural teachers, made by National State from 1903 to 1952, focusing on the Normal Course (middle level). Based on the reading of official documents, we intend to show that the process of creating these Normal Schools can be understood in three stages (1903-1914; 1910-1930; and 1932-1952) that we will see separately in each section. We will study the different denominations that these schools received at all times (Regional, Preceptors and Regional Adaptation) and the changes that affected them over time.

Infinito Particular: análisis de las letras de las canciones de Atahualpa Yupanqui como configuradores de imaginarios geográficos; Infinito particular: análise das letras das canções de Atahualpa Yupanqui como configuradores de imaginários geográficos Arosteguy, Agustín Este artículo explora el paisaje geográfico presente en las canciones de Atahualpa Yupanqui. Entendiendo que Yupanqui poseía una sensibilidad y atracción por lo etnográfico, caracterizado por una observación poética, se buscó describir el vínculo afectivo y sentimental con el espacio geográfico y el repertorio de elementos simbólicos que componen los imaginarios geográficos encontrados en las letras de las canciones del cantautor argentino. Como metodología se utilizó un enfoque cualitativo que consistió, por un lado, en la selección de canciones y el análisis cualitativo de contenido de las mismas y, por el otro, se efectuó el trabajo de campo en la localidad de Cerro Colorado (Provincia de Córdoba, Argentina), en el cual se procedió a la realización de observaciones participantes y entrevistas individuales. El análisis del repertorio de las letras seleccionadas brindó información sobre la manera en la cual los paisajes geográficos aparecen en las canciones de Yupanqui, pudiendo reconocer ciertos elementos/conceptos utilizados con frecuencia en la construcción poética de sus canciones. De esta manera, Yupanqui a través de su vasto cancionero plasmó elementos simbólicos y conceptuales que componen una configuración de los paisajes geográficos del norte cordobés.; Este artigo pretende explorar o universo geográfico presente nas canções de Atahualpa Yupanqui. Entendendo que Yupanqui possuía uma sensibilidade e atração pelo etnográfico, caracterizado por uma observação poética, procurou-se descrever o vínculo afetivo e sentimental com o espaço geográfico e o repertório de elementos simbólicos que compõem os imaginários geográficos encontrados nas canções do cantor e compositor argentino. Como metodologia, utilizou-se uma abordagem qualitativa que consistiu, por um lado, na seleção de músicas e na análise qualitativa de seu conteúdo e, por outro, efeituou-se o trabalho de campo na cidade de Cerro Colorado (província de Córdoba, Argentina), em que foram realizadas observação participante e entrevistas individuais. A análise do repertório musical selecionado forneceu informações sobre a maneira como as paisagens geográficas aparecem nas canções de Yupanqui, podendo reconhecer certos elementos/conceitos frequentemente utilizados na construção poética de suas canções. Dessa maneira, Yupanqui, através de seu vasto cancioneiro, incorporou elementos simbólicos e conceituais que fazem à configuração das paisagens geográficas do norte cordobés.

Assessment of In vitro cytotoxicity of imidazole ionic liquids and inclusion in targeted drug carriers containing violacein Rivero Berti, Ignacio; Rodenak Kladniew, Boris Emilio; Onaindia, María Celeste; Adam, Claudia Guadalupe; Islan, German Abel; Durán, Nelson; Castro, Guillermo Raul Violacein (Viol) is a pigment produced by several Gram-negative bacteria with many bioactivities, such as anticancer, virucide, and antiparasitic. However, violacein is insoluble under physiological conditions preventing its potential therapeutic uses. Surface-active ionic liquids (SAILs) based on the cation 1-alkylimidazolium ([CnHim]) with n = 10 to 16 alkyl carbon side chain lengths and acetate, bromide, methanesulfonate (S) or trifluoroacetate (F) as counterions were synthesized and screened to dissolve Viol in micellar aqueous media and for toxicological studies on the human lung carcinoma A549 cell line. Screening allowed the selection of 1.5 × 10-3% (w/v) [C16Him]-S because it combines low cytotoxicity with 71.5% cell viability and good interaction with 95.2% of the violacein kept in micellar solution for at least 48 h. [Viol-([C16Him]-S)] complex was used to develop an efficient hybrid solid lipid nanoparticle (SLN) carrier based on myristyl myristate and poloxamer 188 and tailored with folate to target cancer cells. Cellular SLN uptake was evaluated with fluorescent DiOC18 on A549, HCT-116, and HeLa cell lines expressing or not the folate receptor. The results showed fivefold incorporation of Viol nanoparticles in HCT-116 and HeLa cell cultures, displaying a high level of folate receptor. Biophysical characterization of the hybrid solid lipid carrier containing Viol was performed by dynamic light scattering, Fourier transform infrared, X-ray diffraction and X-ray photoelectron spectroscopies, and by transmission electron and cryo-transmission microscopies. This journal is

Current agro-climatic potential of Patagonia shaped by thermal and hydric patterns Brendel, Andrea Soledad; del Barrio, Ricardo Alfredo; Mora, Francisco; Orrego León, Elmer Adolfo; Flores, Johaner Rosales; Campoy, José Antonio Changes in thermal and hydric patterns affect crop growth. This research is aimed to assess temporal and spatial trends of 18 climatic and agro-climatic thermal and hydric indices in the north of Argentine Patagonia (39°–44°, south latitude), to establish the current and potential suitability of this region for agriculture in a context of climate change. The period of study was 1970–2016, and it was focused on the last 20 years. Regional warming was indicated by the average increases of annual mean temperature (+ 0.2 °C decade−1), mean maximum temperature of the warm trimester (+ 0.3 °C decade−1), and extreme maximum temperature of the warmest month (+ 0.6 °C decade−1) during 1970–2016. This trend was also found in the 1996–2017 period. Mean minimum temperature of the cold trimester showed an uneven spatial and temporal trend, with increasing temperatures during 1970–2016 (+ 0.1 °C decade−1), but a negative trend (− 0.1 °C decade−1) over the last 20 years, which leads to an increasing regional trend in temperature amplitude. Negative trends in extreme minimum temperatures of April (− 0.3 °C decade−1), July and October (− 0.2 °C decade−1) imply more significant risks of cold damage for crops that exhibit sensitive phenological stages during this time. Thermal agro-climatic indices showed negative trends in winter chill (− 15.8 chill hours decade−1 considering the Weinberger method and − 20.8 chill hours decade−1 using Sharpe method) and higher accumulation of warm semester growing degree days (+ 38.8 GDD5 °C and + 32.3 GDD10 °C decade−1). Climatic and agro-climatic water indices showed that most of the region experienced decreasing water availability, mainly in the central-south and Andean subregions, showing annual precipitation trends of − 11.5 and − 31.2 mm decade−1, respectively). If these thermal and hydric trends are maintained in the future, the region will evolve into an area of greater energetic availability but with some restrictions: lower winter chill that would affect very high-chill cultivars cultivated in the warmest regions, higher risk of extreme thermal events during crucial phenological periods of specific crops, and decreasing water availability that would mainly affect dryland farming and river basin recharge.

Surveyed impact of intellectual property training in STEM education on innovation, research, and development O'Sullivan, S.; Friebe, Michael; Tonti, W. R.; Hartnett, Margaret; Castro, Manuel; Pozzo, María Isabel Rita; Nilsiam, Y. This paper analyzes the findings of an international survey questionnaire to which responses were received from over 500 members from different technical societies of the Institute of Electrical and Electronics Engineers (IEEE). The survey is primarily intended to uncover members' perceptions of patent filing and research-driven innovation. Our thesis statement is twofold. First, the introduction of basic intellectual property (IP) courses to university Science, Technology, Engineering, and Mathematics curricula would teach students valuable basics of IP and associated issues, technology protection; and possibly stimulate novel/innovative R&D outcomes. Second, studying relevant active/lapsed/expired patent documents could provide stimulating input for ongoing academic research. After analyzing the survey results we conclude that IP coursework could be a catalyst for students and researchers to explore patent opportunities related to their specific interests. The resulting knowledge would further enable researchers to prepare more compelling funding applications. In our experience, IEEE conference publications are often closely aligned with inventions to solve pressing technical problems. Conference papers typically comprise of cutting-edge research/industry findings, with a short time between paper submission and presentation. Furthermore, conference organizers choose themes representing the forefront of technologies that often lead to inventions. These could fuel patent developments, but academic research environments often provide little if any incentives for academic researchers to prepare and file patent applications. Indeed, the attainment of high impact journal publications remains the primary metric by which research activity is judged and future academic tenure achieved.

Relevamiento y análisis de materias primas arcillosas y su vinculación con la producción cerámica prehispánica del Valle de Tafí (Tucumán, Argentina); Survey and analysis of clay raw materials and their link with the preHispanic ceramic production of the Tafí Valley (Tucumán, Argentina) Paez, Maria Cecilia; Manasse, Bárbara El Valle de Tafí presenta evidencias de ocupación prehispánica durante al menos 7500 años AP. Se trata de materialidades ancestrales que respaldan la profundidad temporal y la importancia socio-cultural y política de esta región. Hacia mediados del segundo milenio de la Era Cristiana las poblaciones locales entraron en la órbita de las políticas expansivas del Estado Inca. Aún sabemos poco sobre su incidencia en la configuración del paisaje, así como en la posible reorganización de al menos algunos sectores de la sociedad. Nos interesa evaluar, en este caso, la incidencia en la producción alfarera que, por lo pronto, se expresa en variedad tecnológica y decorativa. Con ese objetivo nos propusimos 1) identificar y relevar las fuentes arcillosas en el ámbito del Valle, 2) caracterizar estas arcillas, en vistas a determinar su aptitud para la manufactura alfarera, 3) correlacionar a nivel químico arcillas y fragmentos asignados al segundo milenio y 4) analizar las implicancias sociales y políticas de una producción alfarera local y/o no local. Los resultados obtenidos significan un avance en el conocimiento de la incidencia de expansión imperial implicó en estos territorios.; The Tafí Valley presents evidence of pre-Hispanic occupation for at least 7500 years BP. These are ancestral materialities that support the temporal depth and the socio-cultural and political importance of this region. Towards the middle of the second millennium of the Christian Era, local populations entered the orbit of the expansive policies of the Inca State. We still know little about its impact on the configuration of the landscape, as well as on the possible reorganization of at least some sectors of society. We are interested in evaluating, in this case, the incidence on pottery production, which, for the time being, is expressed in a technological and decorative variety. With this objective we set out 1) to identify and survey the clay sources in the Valley, 2) characterize these clays, in order to determine their suitability for pottery manufacturing, 3) correlate at a chemical level clays and fragments assigned to the second millennium and 4) analyze the social and political implications of local and / or non-local pottery production. The results obtained signify an advance in the knowledge of the incidence of imperial expansion in these territories.

Cuerpos en disputa: constructivismo queer y diferencia sexual; Disputing bodies: queer constructivism and sexual difference Sicerone, Daniel Alberto El presente trabajo se inscribe en el debate contemporáneo sobre la corporalidad, entre la perspectiva del constructivismo queer, y por otro a los estudios de la diferencia sexual. Estas dos ópticas teóricas apuestan a una corporalidad claramente antagónica, ya que desde el constructivismo queer se piensa al cuerpo como el topos donde se produce la subjetividad metaforizándolo como un campo de batalla donde intervienen múltiples fuerzas que terminan siendo equivalentes a la subjetividad. En cambio, desde los estudios de la diferencia sexual, en especial la Escuela de Liubliana, el cuerpo es siempre un cuerpo sexuado, límite de toda pretensión omnipotente y fisura que provoca la imposibilidad de un lenguaje total. Se abordarán las principales aristas teóricas de ambas concepciones, así como también las consecuencias de la disputa de la corporalidad.; This work is part of the contemporary debate on corporality, from the perspective of queer constructivism, and on the other, to the studies of sexual difference. These two theoretical optics bet on a clearly antagonistic corporality, since from queer constructivism the body is thought of as the moles where subjectivity occurs metaphorizing it as a battlefield where multiple forces intervene that end up being equivalent to subjectivity. On the other hand, from the studies of sexual difference, especially the Ljubljana School, the body is always a sexed body, the limit of all omnipotent pretense and fissure that causes the impossibility of a total language. The main theoretical edges of both conceptions will be addressed, as well as the consequences of the corporality dispute.

Republicanismo em questão: quatro distâncias conceituais entre as teorias democráticas de Philip Pettit e Jacques Rancière; El republicanismo en cuestión: cuatro distancias conceptuales entre las teorías democráticas de Philip Pettit y Jacques Rancière Olivares, Nicolàs Emanuel Neste artigo analisaremos comparativamente duas influentes propostas teóricas democráticas contemporâneas. Em primeiro lugar, reconstruiremos os principais pressupostos normativos da teoria republicana representativa de P. Pettit. Em segundo lugar, apresentaremos as bases filosóficas da teoria democrática radical de J. Rancière. Terceiro, explicaremos quatro distâncias conceituais específicas existentes entre as duas teorias políticas, que enfatizam suas definições dos seguintes termos políticos: republicanismo, participação cidadã, não dominação e liberalismo. Em quarto lugar, apresentaremos razões em defesa de uma hipótese exploratória específica, segundo a qual o contraste de ambas teorias nos permite identificar objeções bem fundamentadas ao modelo dual democrático defendido por P. Pettit e à definição de republicanismo utilizada por J. Rancière, fornecendo, assim, argumentos em defesa de uma perspectiva republicana participativa.; En este artículo analizaremos comparativamente dos influyentes propuestas teóricas democráticas contemporáneas. Primero, reconstruiremos los principales supuestos normativos de la teoría republicana representativa de P. Pettit. En segundo lugar, presentaremos las bases filosóficas de la teoría democrática radical de J. Rancière. En tercer lugar, explicaremos cuatro distancias conceptuales específicas entre dichas dos teorías, las cuales enfatizan en sus definiciones de los siguientes términos políticos: republicanismo, participación ciudadana, no dominación y liberalismo. En cuarto lugar, presentaremos razones en defensa de una hipótesis exploratoria concreta, según la cual el contraste de ambas teorías permite identificar objeciones fundadas al modelo democrático dual defendido por P. Pettit y a la definición de republicanismo utilizada por J. Rancière, proporcionando, así, argumentos en defensa de una perspectiva republicana participativa.

Planificación de los cuidados en el final de la vida: Perspectivas de profesionales de oncología y cuidados paliativos; End-of-life care planning: Oncologist and palliative care professionals perspectives; Planejamento dos cuidados em fim de vida: Perspectivas de oncologistas e profissionais de cuidados paliativos Macchi, Marina J.; Pérez, Marisa del Valle; Alonso, Juan Pedro El artículo aborda la perspectiva de profesionales de oncología y cuidados paliativos de Argentina sobre la planificación anticipada de los cuidados en el final de la vida de pacientes con enfermedades oncológicas avanzadas. A partir de un diseño de investigación cualitativa, basado en entrevistas semi-estructuradas con profesionales de diferentes disciplinas, se analizaron las dificultades para la participación de los y las pacientes en el proceso de toma de decisiones y en los procesos de consentimiento informado en torno a los cuidados en el final de la vida. Pese a valorar la planificación anticipada del cuidado e instrumentos como las directivas anticipadas, se identifican barreras para la implementación de estas prácticas. La falta de herramientas comunicacionales para abordar este tipo de conversaciones con los pacientes, el ocultamiento de la información sobre el diagnóstico y/o el pronóstico de la enfermedad, la falta de articulación entre equipos que realizan el seguimiento de pacientes con enfermedad avanzada, y la resistencia de familiares y pacientes, limitan los márgenes de decisión y consentimiento por parte de los pacientes.; The article addresses the perspective of oncologist and palliative care professionals of Argentina on the advance end of life care planning for patients with advanced cancer. Based on semi-structured interviews with professionals from different disciplines, the paper explores barriers for the patient participation in the decision-making process in end of life care. Despite the acceptance of advance care planning and instruments such as advance directives, barriers to the implementation of these practices are identified. The lack of communication skills to deal with this type of conversation with patients, the concealment of information on the diagnosis and prognosis of the disease, the lack of coordination between teams that keep track of patients with advanced disease, and the resistance from relatives and patients, limit the margins of decision and consent by patients.; O artigo aborda a perspectiva dos profissionais de oncologia e cuidados paliativos na Argentina sobre o planejamento antecipado dos cuidados de fim de vida para pacientes com doenças oncológicas avançadas. Partindo de um desenho de pesquisa qualitativa, com base em entrevistas semiestruturadas com profissionais de diferentes disciplinas, o artigo analisa as dificuldades para a participação dos pacientes no processo de tomada de decisão e nos processos de consentimento informado em torno aos cuidados de fim de vida. Apesar de valorizar o planejamento do cuidado antecipado e instrumentos como as diretrizes antecipadas, identificam-se barreiras para a implantação dessas práticas. A falta de instrumentos de comunicação para atender esse tipo de conversa com os pacientes, o encobrimento do diagnóstico e / ou prognóstico da doença, a falta de articulação entre as equipes que acompanham os pacientes com doença avançada e a resistência dos familiares e pacientes, limitam as margens de decisão e consentimento por parte dos pacientes.