Persistencia de los efectos de la descompactación del suelo con paratill Perdomo, Luis Ignacio; Rollhauser, Martin; Melani, Esteban Miguel; Guilino, Facundo Daniel; Draghi, Laura Monica; Jorajuria Collazo, Daniel; Sarli, Guillermo Oliverio; Villarreal, Rafael; Lozano, Luis Alberto; Soracco, Carlos Germán; García, Mirta; Palancar, Telmo Cecilio En la Argentina predomina como sistema productivo la siembra directa donde la ausencia de remoción y el tránsito de máquinas cada vez más pesadas han incrementado los problemas de compactación. Para revertir este fenómeno se utilizan descompactadores. Existen datos dispares de cuán prolongada es la duración del efecto de descompactación. Se realizó un ensayo utilizando un descompactador angulado lateral (Paratill) en un suelo Hapludol Thapto Árgico. A los dos años se evaluó la resistencia a la penetración, la densidad aparente, la infiltración y la producción de materia seca comparando el tratamiento descompactado con el testigo (sin descompactar). No se encontraron diferencias en densidad aparente ni en infiltración entre ambos tratamientos. Hubo diferencias en la resistencia a la penetración donde el tratamiento testigo alcanzó valores mayores al descompactado en parte del perfil trabajado y aún debajo de la profundidad máxima alcanzada. La materia seca producida en el tratamiento descompactado duplicó a la del testigo evidenciando que el efecto de la descompactación se mantiene dos años después de realizada. Se concluye que el efecto de la descompactación se evidencia aún dos años después de efectuada en el parámetro resistencia a la penetración y que el cultivo percibe estos efectos.; In Argentina, no-tillage is the main management system where the absence of soil disturbance and the traffic of heavy machine has increased the problems of soil compaction. In order to reverse this phenomenon, decompaction is used, with contradictory results on the duration of the effect of soil loosing. The study was performed using a lateral angled decompactor (Paratill) in a Thapto Argic Hapludol. After two years, penetration resistance, bulk density, infiltration and dry matter production was evaluated under two treatments: decompacted; and control (without decompaction). No differences were found in bulk density or infiltration between treatments. Along the studied soil profile, the control treatment showed higher values of penetration resistance in comparison with the decompacted only between 7 and 30 cm, even below the maximum depth reached. Dry matter was higher under decompaction treatment, showing that the effect of decompaction was maintained two years after its application. In conclusion, the effect of decompaction is still evident after two years, improving the penetration resistance parameter and crop biomass production.

An activity prediction model for steroidal and triterpenoidal inhibitors of acetylcholinesterase enzyme Borioni, José Luis; Cavallaro, Valeria; Pierini, Adriana Beatriz; Murray, Ana Paula; Peñeñory, Alicia Beatriz; Puiatti, Marcelo; García, Manuela Emila Nowadays, the importance of computational methods in the design of therapeutic agents in a more efficient way is indisputable. Particularly, these methods have been important in the design of novel acetylcholinesterase enzyme inhibitors related to Alzheimer’s disease. In this sense, in this report a computational model of linear prediction of acetylcholinesterase inhibitory activity of steroids and triterpenes is presented. The model is based in a correlation between binding energies obtained from molecular dynamic simulations (after docking studies) and IC50 values of a training set. This set includes a family of natural and semi-synthetic structurally related alkaloids reported in bibliography. These types of compounds, with some structural complexity, could be used as building blocks for the synthesis of many important biologically active compounds Therefore, the present study proposes an alternative based on the use of conventional and easily accessible tools to make progress on the rational design of molecules with biological activity.

Genomic differentiation of Deschampsia antarctica and D. cespitosa (Poaceae) based on satellite DNA González, María Laura; Chiapella, Jorge Oscar; Topalian, Juliana; Urdampilleta, Juan Domingo Repetitive DNA is a rapidly evolving component of vascular plant genomes, which can account for genomic differentiation in plant lineages. Satellite DNA (satDNA) is tandem repetitive DNA for which array size and disposition on chromosomes may vary between reproductively isolated groups, such as different populations or closely related species. Deschampsia is a cosmopolitan grass genus growing in temperate and cold regions; D. cespitosa is widespread all over the world, whereas D. antarctica is restricted to Antarctica and southern Patagonia. The present work aims to the identification, isolation and comparison of satDNA from the genomes of two Deschampsia spp. with bioinformatics tools and their subsequent analysis and cytological study. The genomic analysis of TAREAN found 34 families of satDNA included on 21 superfamilies, most of them shared between the two species. Some of these satDNAs presented homology with others previously reported for grasses. A few satDNA families were found exclusively in one of the species. Most satDNAs were found in both species and showed high sequence homology, but their distribution on chromosomes was different between species. This highlights the importance of changes in the genomic disposition of satDNA in the evolution of species. Based on the 'satDNA library hypothesis' the differential amplification of satDNAs between independent lineages may be the cause of such differences.

Organización del trabajo, salud y estrategias gremiales de cajeras de supermercados en Rosario, Argentina; Work Organization, health and union strategies in supermarket cashiers in Rosario, Argentina Guiamet, Jaime El presente estudio indagó sobre los procesos de salud-enfermedad en el sector servicios. Enparticular, se abordó el trabajo en una empresa multinacional de supermercados ubicada en laciudad de Rosario, Argentina. El objetivo del estudio fue analizar el vínculo entre la organización del trabajo y los procesos de salud-enfermedad en el puesto de trabajo de cajera de supermercados. El estudio se inspiró en la corriente teórica de la Antropología del Trabajo. Este campo entiende a los procesos productivos a partir de su condición sociohistórica y a los procesos de salud-enfermedad como expresión del conflicto entre capital y trabajo. Se privilegió metodológicamente el desarrollo de un enfoque etnográfico, optando por estrategias intensivas de construcción de la información,tales como la observación participante y las entrevistas semiestructuradas. Los resultados revelaron que las trabajadoras de cajas experimentaron malestares asociados con la organización laboral, situaciones conflictivas con personal jerárquico y clientes y situaciones de padecimientos como casos de estrés laboral. Además, se analizó la dificultad de la organización gremial en el sector, lo cual también incidió en las posibilidades de las cajeras para transformar los procesos de salud enfermedad.

Diversity of mammals and birds recorded with camera-traps in the Paraguayan Humid Chaco; Diversidad de mamíferos y aves registrados con cámaras trampa en el Chaco Húmedo Paraguayo Caballero Gini, Andrea Natalia; Bueno Villafañe, Diego; Laino, Rafaela; Musálem, Karim A pesar de su vasta extensión y la rica fauna que alberga, el Chaco Húmedo es una de las ecorregiones menos estudiadas en el país. En este estudio proporcionamos una lista de aves y mamíferos registrados con cámaras trampa en la Estancia Playada, una propiedad privada ubicada al sur de la región Occidental en la ecorregión del Chaco Húmedo de Paraguay. Los muestreos se llevaron a cabo entre noviembre de 2016 y abril de 2017 con un esfuerzo total de 485 días-cámara. Registramos 15 especies de mamíferos y 20 de aves, entre ellas el muitú (Crax fasciolata), el oso hormiguero gigante (Myrmecophaga tridactyla) y la nutria neotropical (Lontra longicaudis) que están globalmente amenazadas a diferentes grados. Nuestros resultados sugieren que la Estancia Playada es un sitio con potencial para la conservación de aves y mamíferos en el Chaco Húmedo de Paraguay.; Despite its vast extension and the rich fauna that it hosts, the Paraguayan Humid Chaco is one of the least studied ecoregions in the country. In this study, we provide a list of birds and medium-sized and large mammals recorded with camera traps in Estancia Playada, a private property located south of Occidental region in the Humid Chaco ecoregion of Paraguay. The survey was carried out from November 2016 to April 2017 with a total effort of 485 camera-days. We recorded 15 mammal and 20 bird species, among them the bare-faced curassow (Crax fasciolata), the giant anteater (Myrmecophaga tridactyla), and the neotropical otter (Lontra longicaudis); species that are globally threatened in different dregrees. Our results suggest that Estancia Playada is a site with the potential for the conservation of birds and mammals in the Humid Chaco of Paraguay.

Modulation of the mTOR pathway plays a central role in dendritic cell functions after Echinococcus granulosus antigen recognition Rodríguez Rodrígues, Christian Fernando Ariel; Nicolao, María Celeste; Chop, Maia; Plá, Natalia; Massaro, Mora; Loos, Julia Alexandra; Cumino, Andrea Carina Immune evasion is a hallmark of persistent echinococcal infection, comprising modulation of innate immune cells and antigen-specific T cell responses. However, recognition of Echinococcus granulosus by dendritic cells (DCs) is a key determinant of the host?s response to this parasite. Given that mTOR signaling pathway has been described as a regulator linking metabolism and immune function in DCs, we reported for the first time in these cells, global translation levels, antigen uptake, phenotype, cytokine transcriptional levels, and splenocyte priming activity upon recognition of the hydatid fluid (HF) and the highly glycosylated laminar layer (LL). We found that LL induced a slight up-regulation of CD86 and MHC II in DCs and also stimulated the production of IL-6 and TNF-α. By contrast, HF did not increase the expression of any co-stimulatory molecules, but also down-modulated CD40 and stimulated the expression of the anti-inflammatory cytokine IL-10. Both parasitic antigens promoted protein synthesis through mTOR activation. The use of rapamycin decreased the expression of the cytokines tested, empowered the down-modulation of CD40 and also reduced splenocyte proliferation. Finally, we showed that E. granulosus antigens increase the amounts of LC3-positive structures in DCs which play critical roles in the presentation of these antigens to T cells.

A Pleistocene freshwater ichthyofaunal assemblage from central Argentina: What kind of fishes lived in the Pampean lagoons before the extinction of the megafauna? Bogan, Sergio; Agnolin, Federico; Cenizo, Marcos Martín; Tassara, Daniel Adrian; Giacchino, Adrián This study contributes to the knowledge of continental fishes recovered from sedimentary successions corresponding to the Bonaerean Stage/Age (late mid-Pleistocene) in the locality of Centinela del Mar, General Alvarado County, Buenos Aires province, Argentina. At this site we describe fossil fishes from a palaeolagoon, including Corydoras sp., Pimelodella sp., Rhamdia sp., Oligosarcus sp., small undetermined characids, Jenynsia sp. and Odontesthes sp. The recovered ichthyofaunal assemblage comprises at least seven taxa of Paranaean lineage. The taxonomic composition of the palaeoichthyofauna is quite comparable to that presently found in Bonaerean Watercourses of the Atlantic Drainage ecoregion. This suggests that local ichthyofaunal communities have remained relatively stable since the late mid-Pleistocene.

Winding modes and the reflection symmetry in AdS3 Iguri, Sergio Manuel; Kovensky, Nicolas; Maestri, Leila; Martín, Lucas Emilio We compute the contact term of the two-point function for the SL (2, ℝ)- WZNW model in the winding sector. After reviewing some generalities of the model and its Euclidean counterpart, we discuss the reflection symmetry for the spectral flowed sector. We define the corresponding intertwining operator and use it to find the explicit form of the contact term of the propagator for a vertex carrying an arbitrary amount of spectral flow. Finally, we enhance the already known integral expression of a singly flowed vertex in order to reproduce such contact term directly in the space-time picture.

Photoexcited energy relaxation and vibronic couplings in π-conjugated carbon nanorings Rodríguez Hernández, Beatriz; Oldani, Andres Nicolas; Martinez Mesa, Aliezer; Uranga Pina, Llinersy; Tretiak, Sergei; Fernández Alberti, Sebastián Conjugated carbon nanorings exhibit unique photophysical properties that, combined with their tunable sizes and conformations, make them suitable for a variety of practical applications. These properties are intimately associated to their strained, bent and sterically hindered cyclic structures. Herein we perform a comparative analysis of the photoinduced dynamics in carbon nanorings composed of nine phenyl units([9]CPP) and nine naphthyl units ([9]CN) respectively. The sterically demanding naphthyl units lead to large dihedral angles between neighboring units. Nevertheless, the ultrafast electronic and vibrational energy relaxation and redistribution is found to be similar for both systems. We observe that vibronic couplings, introduced by nonadiabatic energy transfer between electronic excited states, ensure the intramolecular vibrational energy redistribution through specific vibrational modes. The comparative impact of the internal conversion process on the exciton spatial localization and intra-ring migration indicates that naphthyl units in [9]CN achieve more efficient but less dynamical self-trapping compared to that of phenyl units in [9]CPP. That is, during the photoinduced process, the exciton in [9]CN is more static and localized than the exciton in [9]CPP. The internal conversion processes take place through a specific set of middle- to high-frequency normal modes, which directly influence the spatial exciton redistribution during the internal conversion, self-trapping and intra-ring migration.

Vicuñas y humanos en el pasado reciente (siglos XIX y XX) del oeste tinogasteño (Catamarca, Argentina); Vicuñas and Humans in the Recent Past (Nineteenth and Twentieth Centuries) of Western Tinogasta (Catamarca, Argentina) Miyano, Juan Pablo; Ratto, Norma Rosa Este trabajo explora la percepción sobre las vicuñas de los pobladores del oeste tinogasteño (Catamarca, Argentina) del pasado reciente (siglos XIX y XX). Para ello se analizan las manifestaciones orales tradicionales recopiladas en la Colección de Folklore que corresponden a distintas localidades de la región de estudio (La Ramadita, Medanitos y Fiambalá). Los resultados se integran y discuten con los sistemas simbólicos de la cosmovisión andina, la información proveniente de fuentes orales y escritas de otros sectores de los Andes centro-sur y la información arqueológica y zooarqueológica del oeste tinogasteño que da cuenta de la relación humano-animal entre los siglos V a. C. y XV d. C.; This paper examines the perception of the vicuñas by the habitants of western Tinogasta (Catamarca, Argentina) during the recent past (Nineteenth and Twentieth Centuries). For this purpose, we analyzed traditional oral manifestations compiled in the Colección de Folklore belonging to different localities of the region of study (La Ramadita, Medanitos y Fiambalá). The results were integrated and discussed with the symbolic systems of the Andean cosmovision, information from oral and written sources of other sectors of the south-central Andes, and archaeological and zooarchaeological information of the western Tinogasta, which accounts for human-animal relationships during the V BC and XV AD centuries

Enseñar a argumentar en la escuela secundaria: el caso de la Filosofía; Teaching how to argue in high school: the case of Philosophy Majorel, Cecilia; Padilla Sabate, Constanza; Rosconi, María Gabriela; Moisés, Fabiana María Diversas investigaciones en diferentes contextos educativos han evidenciado las dificultades de los estudiantes de escuelas secundarias para comprender textos de cierta complejidad y para fundamentar la propia postura ante diversos contenidos disciplinares. En Argentina, los estudios se han focalizado en estudios diagnósticos sobre la comprensión de textos narrativos y expositivos, pero no en los efectos de la implementación de propuestas didácticas que favorezcan la comprensión y producción de textos argumentativos. En este artículo, se sintetizan los resultados de una investigación colaborativa, realizada en una escuela secundaria pública del noroeste argentino, cuyo objetivo fue el diseño, implementación y evaluación de estrategias didácticas que priorizan el desarrollo de prácticas argumentativas dialógicas para promover el pensamiento crítico-en sentido amplio- (Paul y Elder, 2003), en el aprendizaje de la Filosofía. Se triangularon resultados obtenidos de tres fuentes de datos: producciones estudiantiles, perspectivas de los estudiantes y del docente, y las secuencias didácticas implementadas; Research in different educational contexts has shown the difficulties that high school students have understanding texts of a certain complexity and substantiating their own positions regarding several disciplinary contents. In Argentina, studies have focused on diagnostic studies on the understanding of narrative and expositive texts, but not on the effects of the implementation of teaching initiatives that favor the understanding and production of argumentative texts. In this article, we synthesise the results of a collaborative research, carried out in a public high school in the northwest of Argentina, whose objective was the design, implementation and evaluation of teaching strategies that prioritise the development of dialogical argumentative practices in order to promote critical thinking - in a broad sense- (Paul and Elder, 2003), when learning Philosophy. Results were triangulated from three data sources: students’ productions, students and teachers’ perspectives, and the implemented teaching sequences.

Two new species of Acanthobothrium Blanchard, 1848 (Cestoda: Onchoproteocephalidea) from rajiform batoids off Argentina Franzese, Sebastián; Ivanov, Veronica Adriana Two new species of Acanthobothrium Blanchard, 1848 were collected from rajiform batoids along the coast of Argentina. They are Acanthobothrium carolinae sp. n. from Bathyraja magellanica (Philippi) and Acanthobothrium domingae sp. n. from Dipturus brevicaudatus (Marini). Both belong to category 1 and 2 because their total length is lower than 15 mm, they have fewer than 50 proglottids, fewer than 80 testes and a  symmetric or asymmetric ovary. Acanthobothrium carolinae sp. n. differs from all congeners by the following combination of features: proglottid apolysis, hook morphology, microthrix pattern on the cephalic peduncle and distribution of the vitelline follicles. Acanthobothrium domingae sp. n. is unique in the combination of proglottid apolysis, total length, number of proglottids, hook and septal morphology, microthrix pattern on the cephalic peduncle, number and distribution of testes, cirrus sac length, distribution of the vitelline follicles and genital pore position. The discovery of these species increases the number of species of Acanthobothrium parasitising rajiform batoids off Argentina from one to three. All three species have a  unique pattern of distribution of the gladiate spinitriches along the length of the cephalic peduncle, i.e., gladiate spinitriches being interrupted in a  medial line both dorsally and ventrally.

Primary productivity determinants of different land uses in humid subtropical ecosystems: from native forests to tree plantations Diaz Villa, Maria Virginia Eva; Cristiano, Piedad María; de Diego, María Soledad; Rodríguez, Sabrina Andrea; Bucci, Sandra Janet; Scholz, Fabian Gustavo; Goldstein, Guillermo Hernan Land-use changes in forest ecosystems may alter the amount of carbon sequestration. The main objective of this study was to characterize the impact of different land-use practices on structure and functioning of humid subtropical forests that are under severe threat. We emphasize the characterization of canopy photosynthetic activity, assessed by the Enhanced Vegetation Index (EVI), the Leaf Area Index (LAI) and the fraction of Absorbed Photosynthetically Active Radiation (fPAR), using a combination of ground base measurements and remote sensing data on native well-preserved forests, impacted forests by selective logging and pine plantations in NE Argentina. Even though selective timber extraction resulted in a substantial decrease in stand’s tree density, EVI values were as high as those from preserved forests. In these forests, an increase in the understory cover appears to compensate the response of stand’s EVI to timber extraction. Removal of canopy trees enhances incoming solar radiation, allowing active growth of understory vegetation. The pine plantations exhibited the lowest values of LAI, fPAR and EVI. However, when EVI was normalized by LAI, the pine plantations exhibited the highest EVI/LAI values. Our results suggest that after 15 years of forest recovery from selective timber extraction, photosynthetic capacity was similar to that of preserved forests. Increases in the understory cover may compensate the potential decrease in the canopy photosynthetic activity. Pine plantations resulted in substantially lower productivity as depicted by lower EVI and LAI but exhibited higher growth efficiency than native forests.

Representaciones morales y grados de participación en el conflicto de 2007 en la industria pesquera de Mar del Plata, Buenos Aires, Argentina; Moral representations and degrees of participation in the 2007 conflict in the fishing industry of Mar del Plata, Buenos Aires, Argentina Schulze, Maria Soledad El presente artículo tiene como objetivo analizar las representaciones sobre la conflictividad laboral durante el año 2007 en un grupo de trabajadores de la industria de procesamiento de pescado de la ciudad puerto de Mar del Plata (Pcia. de Buenos Aires, Argentina). La atracción se dirige a este grupo de trabajadores/as que histórica y generacionalmente ha sufrido los efectos devastadores de la precariedad y la flexibilización laboral en la rama del filet. Específicamente, pretendemos explorar el grado de participación de nuestros entrevistados en un conflicto particular acontecido en el año 2007 en la industria pesquera de Mar del Plata. Consideramos sustantivo indagar dichas representaciones con relación a las trayectorias laborales, las condiciones laborales involucradas en dichas trayectorias y las relaciones de producción. Para lograr los objetivos planteados se utilizaron principalmente fuentes primarias, construidas a partir de una entrevista semiestructurada aplicada en terreno a 161 trabajadores y trabajadoras.; The objective of this article is to analyze representations of labor conflict in a group of workers in the fish processing industry of the port city of Mar del Plata (Province of Buenos Aires, Argentina). The attraction is addressed to this group of workers who, historically and generationally, have suffered the devastating effects of precariousness and labor flexibilization in the filet branch. Specifically, we intend to explore the degree of participation, of our interviewees, in a conflict that occurred in 2007 in the fishing industry of Mar del Plata. We consider substantive to investigate such representations in relation to work trajectories, the working conditions involved in these trajectories and the production relations. To achieve the proposed objectives, primary sources constructed from a semistructured interview applied in the field to 161 workers were used.

Partidos de derecha y estilos de liderazgo: notas sobre el PRO argentino y el PSL brasileño; Right-wing parties and leadership styles: notes on the Argentinian PRO and the Brazilian PSL; Partidos de direita e estilos de liderança: anotações sobre o argentino PRO e o brasileiro PSL Caruncho, Lucía Objetivo/contexto: este trabajo procura comparar las condiciones que contribuyeron al nacimiento, desarrollo y triunfo de los nuevos partidos de derecha en Argentina y Brasil (PRO y PSL) y los factores que podrían asociarse a la radicalización o moderación de sus liderazgos (Mauricio Macri y Jair Bolsonaro, respectivamente). Metodología: a partir de la confrontación de los hallazgos de los estudios especializados, se identifican las principales condiciones que contribuyeron a la consolidación de los partidos de derecha en América Latina, y los factores externos e internos que favorecieron el desarrollo y éxito del PRO y el PSL y la moderación o radicalización de sus liderazgos. Conclusiones: una explicación plausible es que el desarrollo y triunfo de estos partidos se relaciona con las condiciones coyunturales nacionales y con la capacidad de los partidos y sus líderes para aprovecharlas. Y los límites de sus liderazgos podrían adjudicarse mayormente a los legados históricos sociopolíticos nacionales. Originalidad: son escasos los estudios que comparan los casos de Argentina y Brasil; más aún, los vinculados con las diferencias entre sus nuevos partidos de derecha y sus liderazgos.; Objective/context: This study intends to compare the conditions that contributed to the birth, development and triumph of the new right-wing parties in Argentina and Brazil (PRO and PSL) and in the factors that could be associated with the radicalization or moderation of their leaderships (Mauricio Macri and Jair Bolsonaro, respectively). Methodology: Based on the review and analysis of the specialized literature, this article identifies the main conditions that contributed to the consolidation of right-wing parties in Latin America and in particular the most relevant external and internal factors that favored the development and success of PRO and PSL in addition to the moderation or radicalization of their leaders. Conclusions: A plausible explanation is that the development and triumph of these parties are mainly linked to the conditions of each nation and with the capacity of the parties and their leaders to take advantage of them. While the limits of their leaderships could be mostly attributed to the national socio-political historical legacies. Originality: There are few studies that compare the cases of Argentina and Brazil; even more those related to their new right-wing parties and recent leaderships.; Objetivo/Contexto: este trabalho compara as condições que contribuíram para o nascimento, desenvolvimento e triunfo dos novos partidos de direita na Argentina e no Brasil (PRO e PSL) e os fatores que poderiam estar associados à radicalização ou à moderação de suas lideranças (Mauricio Macri e Jair Bolsonaro, respectivamente). Metodologia: a partir do confronto dos achados dos estudos especializados, são identificadas as principais condições que contribuíram para consolidar os partidos de direita na América Latina e os fatores externos e internos que favoreceram o desenvolvimento e o sucesso do PRO e do PSL, bem como a moderação ou a radicalização de suas lideranças. Conclusões: o desenvolvimento e triunfo desses partidos podem ser explicados pela vinculação com as condições conjunturais nacionais e com a capacidade dos partidos e de seus líderes de aproveitá-las. Por sua vez, os limites de suas lideranças poderiam ser concedidos predominantemente aos legados históricos sociopolíticos nacionais. Originalidade: são escassos os estudos que comparam os casos da Argentina e do Brasil, mais ainda os relacionados às diferenças entre seus novos partidos de direita e suas lideranças.

Movimientos ciudadanos del siglo XXI: aportes para su conceptualización; Citizens movements in the twenty-first century: towards a conceptualization Annunziata, Rocío En distintos lugares del mundo estamos viendo surgir protestas y movimientos ciudadanos que ponen en cuestión el funcionamiento de las democracias, tanto de las que se consideraban jóvenes como de las maduras o establecidas. Este artículo se propone abordar los aportes realizados por la teoría política para conceptualizar estos movimientos ciudadanos contemporáneos. Primero, se revisan algunos de estos aportes teniendo en cuenta los rasgos que los estudios les atribuyen a estos movimientos: acción conectiva, auto-comunicación de masas, rechazo de las mediaciones políticas tradicionales, singularidad, carácter narrativo-expresivo, y contra-democracia, a los cuales agrego el carácter meta-democrático que demuestran algunos de estos movimientos que podríamos calificar de postsociales, como se intentará mostrar. Luego, se presentan algunas experiencias recientes para profundizar en los matices y diferencias que es posible establecer al interior del amplio abanico de los movimientos ciudadanos.; Protests and citizens movements contesting the very functioning of democracies have been erupting around the world, not only in countries considered as young democracies, but in those where democracy is more mature and established. This article addresses the contributions made by political theory to conceptualize these contemporary citizens movements. A selection of these contributions are reviewed in order to identify the features that authors attribute to these movements, including connective action, mass self-communication, rejection of traditional political mediations, singularity, narrative expression, and counter-democracy. To these is added the meta-democratic nature exhibited by some of these movements, which could in certain cases be described as post-social. A number of recent experiences are then analyzed in order to explore the nuances and distinctions that may be identified within the wide range of citizens movements that have taken place.

La regulación jurídica de la economía social y solidaria en Brasil y Argentina: algunas consideraciones; The legal regulation of the social and solidarity economy in Brazil and Argentina: some considerations Torres, Miguel Agustín Con diferencias de matices en lo referente a los fundamentos que la explican y a los fines que la impulsan, la economía social y solidaria fue adquiriendo, en las últimas décadas, una creciente relevancia en las sociedades de los países sudamericanos. La dinámica que observó en los últimos años el segmento social y solidario en Brasil y en Argentina se inscribe dentro de dicha tendencia. El desarrollo del ámbito social y solidario en estos dos escenarios nacionales instaló en sus sociedades el debate sobre la necesidad de profundizar en la regulación legal del sector. Teniendo en cuenta ello, en este trabajo se procura caracterizar el estado actual que exhibe la regulación jurídica de la economía social y solidaria en Brasil y en Argentina, en tanto faceta central del proceso de institucionalización, resaltando los principales aspectos que observan los respectivos marcos legales. El estudio permite advertir que la ausencia de una ley nacional específica en los dos Estados no fue un obstáculo para el desarrollo de regímenes provinciales sobre economía social y solidaria.; With some differences in nuances regarding the funda-mentals that explain it and the purposes that drive it, the social and solidarity economy has acquired in recent decades a growing relevance in the societies of the South American countries. The dynamic that observed in recent years the social and solidarity segment in Argentina and Brazil is part of this trend. The development of social and solidarity field in these two national scenarios installed in their societies the debate on the need to deepen the legal regulation of the sector. Taking this into account, this paper tries to characterize the current situation of the legal regulation of the social and solidarity economy in Brazil and Argentina as a central piece of the institutio-nalization process, highlighting the main aspects of the respective legal frameworks. The study shows that the absence of a specific federal law in the two States was not an obstacle to the development of provincial regimes for social and solidarity economy.

Prácticas, narrativas y temporalidad en Cusi Cusi (Rinconada, Jujuy): una mirada hermenéutica.; Practices, narratives and temporality in Cusi Cusi (Rinconada, Jujuy): a hermeneutic perspective Vaquer, Jose Maria; Petit de Murat, Facundo; Di Tullio, Martina En este trabajo presentamos los resultados de la interpretación de una serie de entrevistas realizadas a los habitantes de Cusi Cusi (Rinconada, Jujuy, Argentina) con motivo de la diagramación de un museo comunitario. Las entrevistas versaron sobre las relaciones entre el pasado y el presente, por lo que sirvieron como material para interpretar las nociones de temporalidad de los cuseños y las cuseñas; y las relaciones entre las prácticas y las narrativas. Para ello, utilizamos las herramientas interpretativas de la Antropología de la Experiencia junto con la fenomenología y la hermenéutica filosóficas. Proponemos que la temporalidad de los cuseños sintetiza dos lógicas, una circular, producto del pensamiento andino tradicional y otra lineal, producto de las instituciones occidentales. Sin embargo, ambas operan en la práctica cotidiana de manera coherente. Por otro lado, detectamos algunas contradicciones entre la experiencia práctica de los habitantes y su narrativización posterior, cuestión que puede deberse, entre otras, a los temas de la edad y del género. Finalmente, sostenemos que las lógicas de la temporalidad en Cusi Cusi no son tan diferentes de las nuestras, por lo que se debe tener cuidado a la hora de exotizar las narrativas de los demás.; In this paper we present the results of interpreting a series of ethnographic interviews conducted to people from Cusi Cusi (Rinconada, Jujuy, Argentina) on the occasion of laying out a communitarian museum. The interviews were about the relationships between past and present, therefore, they were useful as material to interpret notions of temporality among people from Cusi Cusi and the relationship between practice and narrative. To this end, we applied the interpretative tools from the Anthropology of Experience along with philosophical phenomenology and hermeneutics. We propose that temporality in Cusi Cusi synthesizes two logics: a circular one, related to the traditional Andean system of thought, and a lineal one, related to the work of Western institutions. However, they both operate in daily practice in a coherent way. On the other hand, we detected some contradictions between the practical experiences of the inhabitants and their subsequent narrative, what could relate, among other reasons, to their age and gender. Finally, we think that the logics of temporality in Cusi Cusi are not so different from our own, so caution must be taken when “exoticizing” other people’s narratives.

Virtual reality smartphone-based intervention for smoking cessation: Pilot randomized controlled trial on initial clinical efficacy and adherence Goldenhersch, Emilio; Thrul, Johannes; Ungaretti, Joaquín; Rosencovich, Nicolas; Waitman, Cristian; Rodriguez Ceberio, Marcelo Background: Obstacles to current tobacco cessation programs include limited access and adherence to effective interventions. Digital interventions offer a great opportunity to overcome these difficulties, yet virtual reality has not been used as a remote and self-administered tool to help increase adherence and effectiveness of digital interventions for tobacco cessation. Objective: This study aimed to evaluate participant adherence and smoking cessation outcomes in a pilot randomized controlled trial of the digital intervention Mindcotine (MindCotine Inc) using a self-administered treatment of virtual reality combined with mindfulness. Methods: A sample of 120 participants was recruited in the city of Buenos Aires, Argentina (mean age 43.20 years, SD 9.50; 57/120, 47.5% female). Participants were randomly assigned to a treatment group (TG), which received a self-assisted 21-day program based on virtual reality mindful exposure therapy (VR-MET) sessions, daily surveys, and online peer-to-peer support moderated by psychologists, or a control group (CG), which received the online version of the smoking cessation manual from the Argentine Ministry of Health. Follow-up assessments were conducted by online surveys at postintervention and 90-day follow-up. The primary outcome was self-reported abstinence at postintervention, with missing data assumed as still smoking. Secondary outcomes included sustained abstinence at 90-day follow-up, adherence to the program, and readiness to quit. Results: Follow-up rates at day 1 were 93% (56/60) for the TG and 100% (60/60) for the CG. At postintervention, the TG reported 23% (14/60) abstinence on that day compared with 5% (3/60) in the CG. This difference was statistically significant (χ21=8.3; P=.004). The TG reported sustained abstinence of 33% (20/60) at 90 days. Since only 20% (12/60) of participants in the CG completed the 90-day follow-up, we did not conduct a statistical comparison between groups at this follow-up time point. Among participants still smoking at postintervention, the TG was significantly more ready to quit compared to the CG (TG: mean 7.71, SD 0.13; CG: mean 7.16, SD 0.13; P=.005). A total of 41% (23/56) of participants completed the treatment in the time frame recommended by the program. Conclusions: Results provide initial support for participant adherence to and efficacy of Mindcotine and warrant testing the intervention in a fully powered randomized trial. However, feasibility of trial follow-up assessment procedures for control group participants needs to be improved. Further research is needed on the impact of VR-MET on long-term outcomes.

Animal domesticum et civile: orden económico y orden político en Tomás de Aquino, Jacobo de Viterbo, Juan Quidort y Dante Alighieri; Animal domesticum et civile: Economic and Political Order in Thomas Aquinas, James of Viterbo, John Quidort and Dante Alighieri Perez Carrasco, Mariano El artículo explora el modo en que las ideas políticas de Aristóteles fueron interpretadas por pensadores medievales como Tomás de Aquino, Jacobo de Viterbo, Juan Quidort de París y Dante Alighieri. La tesis central es que esos pensadores han tendido a establecer una profunda continuidad entre el orden económico y el orden político, y han dado pasos decisivos para comprender al ser humano no tanto como un animal político, sino como un animal doméstico (animal domesticum et civile es expresión tomística), es decir, como un ser fundamentalmente económico.; This paper explores the way in which Aristotle’s political philosophy was interpreted by medieval scholars such as Thomas Aquinas, James of Viterbo, John Quidort of Paris and Dante Alighieri. The main thesis is that they established deep continuity between the economic and political orders, and by doing so took a decisive step towards a new understanding of the human being: not so much as a political animal, but mostly as a domestic one (animal domesticum et civile is a Thomistic expression), i.e., as a fundamentally economic being.