Apuntes de cuarentena II ¿Tecnologías para ser felices? Alberti, Cristian Javier; Germain, Marisa; Maroni, Adriel Jorge; Montiel, Luz Belén El escrito propone un análisis sobre cómo las tecnologías del yo viralizadas por los medios de comunicación, en tiempos del Aislamiento Social Preventivo y Obligatorio (ASPO) llevado adelante en Argentina durante el 2020 producto de la pandemia de COVID-19, tienen como fin la producción de un sujeto que pueda adaptarse rápidamente a los cambios que se dan en la sociedad y ajustarse, con la misma velocidad, a las actualizaciones de la organización social del trabajo que el presente acontecimiento propone.

¿Trabajos esenciales pero no reconocidos? Un mirada desde la economía popular frente a la pandemia del COVID-19 Silva Mariños, Lisandro Rubén La pandemia del COVID-19 ha significado un hecho de trascendencia histórica que ha trastocado el orden social, político y económico a nivel global. El impacto en el mundo del trabajo de este proceso se encuentra abierto, no obstante ello, al momento es posible reflexionar acerca de que actividades laborales se han significado como esenciales y cuales subsidiarias en tiempos de crisis sanitaria. En este sentido, desde la economía popular han tomado relevancia un conjunto de actividades preexistentes a la pandemia, que han sido declaradas como actividades esenciales, cuando no tienen un reconocimiento (ni simbólico, ni de retribución monetaria) en tanto trabajos. De este modo, el presente artículo propone recorrer los principales aportes conceptuales en torno al trabajo y las clases populares, para dar cuenta de la potencia de la economía popular (a partir de la evidencia empírica y el estudio de caso) como noción ordenadora de una matriz de estrategias para la reproducción de la vida que se ponen en juego durante la pandemia.

Vicuña conservation and the reinvigoration of Indigenous communities in the Andes Lichtenstein, Gabriela; Cowan Ros, Carlos Javier Vicuña management by Andean communities is one of the few success stories of international conservation. The species not only recovered from the brink of extinction, but also ancient traditions were restored. Vicuñas, Vicugna vicugna, are wild South American camelids that roam in the Puna and Altiplano, high Andean ecoregions in Argentina, Bolivia, Chile, Ecuador and Peru reaching altitudes between 3,500 and 5,000 metres. The vicuña´s highly prized fleece has been both its greatest asset and its biggest downfall. In this chapter, we firstly provide a historical background on the decommonisation process of vicuñas and their near extinction that occurred following the Spanish Conquest in the Andean Region. Secondly, we analyse their recent commonisation led by the indigenous communities living in the province of Jujuy, Argentina; the enabling conditions, and the resulting socio-political, cultural, economic and ecological benefits derived for the communities involved.

Peteribí (Cordia trichotoma), Lapacho Rosado (Handroanthus impetiginosus), and Cebil Colorado (Anadenanthera colubrina var. cebil): Three Valuable Species with Incipient Breeding Programs Fornes, Luis Fernando; Inza, María Virginia; García, María Victoria; Barrandeguy, Maria Eugenia; Soldati, María Cristina; Barth, Sara Regina; Ledesma Guaraz, Tilda Teresa; Saravia, Pablo Federico; Tarnowski, Christian; Rodríguez, Gustavo; Balducci, Ezequiel Diego; Grignola, Josefina; Schmid, Patricia Griselda; Galindez, Guadalupe; Trápani, Adrián Ignacio The development of forestry in Argentina has been based on the cultivation of fast-growing introduced species, mainly from the Pinus, Pseudotsuga, Eucalyptus, Populus, andSalix genera, for which both private companies and the National State through INTA, have developed high intensity genetic improvement programs. However, in the late 1990s, three complementary reasons gave impetus to the development of a domestication program at INTA: i) a certain social consensus (first international and finally national) on the importance of conserving and restoring natural forest ecosystems, ii) sympathy for native species per se, and iii) the baseline information that had been generated in previous years on the genetic resources of native forest species. Initial efforts were unstructured and responded to different projects with varying objectives, but finally a formal program started in 2006. In addition to INTA´s initiative to domesticate potentially productive native species using low-intensity breeding strategies (see Marcó and Llavallol 2016), efforts were also made by other institutions that had also started studying the genetic resources of forest species in Argentina. These actions make up the Argentine experience in the matter, at times systematic and well structured, and sometimes dispersed and with a varied level of depth. It is the intention of this book to summarize the most relevant experiences, trying to make visible the effort of many technicians and researchers who have managed to chart a path that, despite the years, has only just begun. The book is organized through the main forest ecosystems in Argentina. In each one, the advances referred to the knowledge of the genetic resources of the most studied species are presented, together with the implementation of actions for their domestication and genetic improvement. The most prominent results are reported, avoiding accounting for failures or low impact results. Towards the end of the book, we present the latest advances in the development of tools by means of high-throughput sequencing in native species of Argentina that will be the basis of the next technological generation for their genetic improvement. Finally, we conclude with essential considerations inherent in the planting of native species in the frame of climate change. We are addressing a wide and international public that seeks to know what has been achieved and what is being worked on in Argentina with respect to its native forest genetic resources. The interested reader should look for the most scientific details in the articles of the extensive list of bibliographic citations.

Prácticas esenciales para la formación inicial de educadoras y educadores de párvulos en escritura emergente: escritura andamiada y escritura interactiva Concha, Soledad; Manrique, Maria Soledad El término más amplio alfabetización emergente ha sido descrito como un conjunto de habilidades, conocimientos y actitudes que son precursores de la lectura y de la escritura (Whitehurst y Lonigan, 1998). La escritura emergente forma parte de este constructo y puede ser descrita como un proceso en el que los niños experimentan activamente con la palabra escrita para hacer hipótesis y gradualmente descubrir sus convenciones, su cualidad simbólica, su función comunicativa en las relaciones sociales y su valor cultural. La investigación actualizada demuestra que la promoción, la valoración y la colaboración con los adultos en este proceso favorece el logro posterior de la escritura convencional, cuya enseñanza formal comienza en la Educación Básica (Villalón, 2008). Por lo mismo, la Educación Parvularia constituye un momento privilegiado para ofrecer oportunidades y mediar pedagógicamente el desarrollo de la escritura emergente. La evidencia es clara respecto de que promover la escritura emergente en niños menores de 6 años tiene incidencia en su desempeño futuro. En el capítulo se describen dos tipos de prácticas esenciales para desarrollar la escritura emergente en el aula de Educación Parvularia: la escritura interactiva y la escritura andamiada. Se describen asimismo estrategias de formación de docentes para que puedan desarrollar las capacidades necesarias para poner en juego estas dos tipos de prácticas esenciales.

The Tapes Complex (Nico Pérez Terrane, Uruguay): Constraining the Mesoproterozoic evolution of the Río de la Plata Craton Gaucher, Claudio; Frei, Robert; Samaniego, Lucía; Will, Thomas M.; Chemale, Farid; Gargiulo, Maria Florencia; Poire, Daniel Gustavo; Ling, Xiaoxiao; Li, Xian Hua; Li, Qiu Li The Tapes Complex crops out in the southeastern Nico Pérez Terrane (NPT) of the Río de la Plata Craton and forms part of a NE-trending Mesoproterozoic belt together with the Calymmian (1.48–1.43 Ga) Parque UTE and Mina Verdún groups. The complex is characterized by interbedded/tectonically interleaved metasedimentary (mainly siliciclastic) and metaultramafic rocks, with subordinate intercalations of metabasites, carbonate and chert, all metamorphosed in the greenschist facies. The age of the Tapes Complex is constrained by: (i) a U–Pb SIMS age of 1360 ± 12 Ma for the youngest detrital zircon, (ii) the K–Ar age of 1253 ± 32 Ma for synkinematic muscovite of the Zapicán thrust, which affects the unit, and (iii) an Sm–Nd isochronic age of 1403 ± 150 Ma for ultramafic and mafic rocks. The intruding Tapes Chico Syenite yielded a much younger U–Pb SIMS age of 601 ± 5 Ma, associated with Brasiliano-Pan African tectonism, negative εHf values (mean = −31), δ18O zircon ratios ranging between 5.45 and 6.68‰ V-SMOW and inherited zircons dated at 1774-1756 Ma. The best preserved mafic and ultramafic samples yielded Nd model ages (TDM) between 1.55 and 1.68 Ga, close to the assumed crystallization age, and positive εNd(t). Nd model ages of metasedimentary rocks vary between 1.8 and 3.1 Ga, which is interpreted as reflecting two contrasting sources: Archean units of the NPT and Mesoproterozoic mafic and ultramafic rocks, including fragments of oceanic crust. Chondrite-normalized REE patterns of metasedimentary rocks are characterized by LREE enrichment and lack of an Eu anomaly, similar to REE patterns of co-occurring metabasalts. High MgO concentrations, high Cr/V and low Y/Ni and Th/Sc ratios imply the involvement of ultramafic rocks in the source area, which is also supported by whole-rock Pb isotope data. A geodynamic evolution is envisaged, from an extensional tectonic setting between 1.48–1.43 Ga (rift or retroarc basin) into a compressional, retroarc foreland basin at ca. 1.25–1.20 Ga, the latter being probably related to the Kibaran Orogeny in the Namaqua-Natal Belt. It is proposed that the corresponding arc granites and high-grade metamorphic rocks are likely to be found in one of the several terranes in the Namaqua sector of the belt. The Apiaí Terrane (Ribeira Belt, Brazil) shows a similar geological record and evolution as the NPT, and maybe a fragment of the latter displaced to the NW by the Ibaré Shear Zone. The Tapes Complex is a key unit for understanding the assembly of the Río de la Plata and Kalahari cratons, and their incorporation into the Rodinia supercontinent.

A 700-year multiproxy reconstruction on the Argentinian Pampas inferred from the sediments of Laguna Blanca Grande López Blanco, Charo; Rodríguez Abaunza, Gloria Alejandra; Seitz, Carina; Perez, Laura; Cuña Rodriguez, Carolina Celeste; Fontana, Sonia Leonor The Pampean region is a crucial area to obtain sensitive paleoclimatic lacustrine archives due to the presence of shallow environments in a territory non impacted by humans until the last centuries. In this study, we provide a paleoecological reconstruction for the last ca. 700 years based on a multiproxy lacustrine record from Laguna Blanca Grande, in Olavarría (Buenos Aires, Argentina). Our inferences, which were based on sedimentary properties, diatom, cladoceran and ostracod assemblages, offered interesting information about hydroclimatic variability and nutrient increase. Changes in relative abundances on diatoms, specifically on Aulacoseira granulata and Aulacoseira granulata var. angustissima and fragilariods, were used to infer shifts in nutrient conditions. The remainder proxies together indicated small lake level changes. Reconstructed hydroclimatic conditions in Laguna Blanca Grande are consistent with previous paleoecological inferences indicating a humid phase around ca. AD 1450 and progressive drier conditions ca. AD 1530–1900. A flood gate construction and an increase of nutrients in the lake revealed a higher human pressure due to population increase and land-use changes during the last century. Further studies on taxonomy and autecology of microcrustaceans are needed to effectively unlock the information contained in biological proxies from Sudamerican records.

Storage duration, light, temperature, and salinity exposure influence germination of the glycophyte rhanterium epapposum Bhatt, Arvind; Carón, María Mercedes; Gallacher, David; Souza-Filho, Paulo Roberto de Moura Regeneration of native species is the first priority for biodiversity conservation and restoration. To this end, it is key to have seeds properly conserved in seed banks and knowledge of seed longevity and (or) dormancy alleviation at different storage time intervals. In addition, understanding the germination response of the stored seeds to environmental conditions improves the efficiency of restoration and rehabilitation projects. We investigated the influence of storage duration (1–5 years), light (0 or 12 h of illumination), thermoper-iod (night/day temperatures of 15/20 and 20/25 °C), and salinity (0, 100, 200. and 400 mmol/L of NaCl) on seed germination of Rhanterium epapposum, a glycophytic species from the Arabian Peninsula. Seeds maintained viability after five years of storage indoors at room temperature. Three years of storage alleviated seed dormancy. Exposure to 12 h light per day and thermoperiods of 15/20 °C enhanced seed germination. The seeds were glycophytic; after-ripened seeds exposed to salinity exhibited reduced rates of germination that did not recover after the salinity was alleviated.

Estrategias colectivas de/para/con migrantes en el marco de la pandemia del COVID-19 Rosas, Carolina Alejandra; Jaramillo Fonnegra, Verónica; Stang, Fernanda; Martinez Espínola, María Victoria; Zenklusen, Denise El presente texto sistematiza el intercambio de ideas acerca de las estrategias colectivas de/para/con migrantes que se han observado en países de Sudamérica durante el año 2020, y los encuadres teórico-metodológicos que cada participante utilizó para comprenderlas. Se expusieron estrategias de pequeña escala y redes metropolitanas o movimientos sociales de mediano alcance, así como también aquellas que se tejieron sobre la base de redes o alianzas transnacionales. Algunas han adquirido la forma de resistencia, otras de interpelación a los distintos niveles estatales o acción conjunta con organismos internacionales en la demanda de derechos. Fueron materializadas por distintxs actores, especialmente mujeres cis y disidencias sexogenéricas, y presentaron recursos, objetivos, saberes y resultados diversos.

Synthesis and characterization of montmorillonite/polyaniline composites and its usage to modify a commercial separator Para, Maria Laura; Versaci, Daniele; Amici, Julia; Caballero, María Florencia; Cozzarin, Melina Vanessa; Francia, Carlotta; Bodoardo, Silvia; Gamba, Martina Composites of montmorillonite (MMT) and polyaniline (PANI) were synthetized through a facile and inexpensive method. Two samples with different MMT:PANI ratios were studied and deeply characterized by XRD, TG, zeta potential, FTIR and XPS measurements. On one hand, the sample with ratio MMT:PANI = 87:13 was an intercalated composite, were polyaniline resides between the inorganic layers of the clay at a regular distance. On the other hand, the sample with ratio MMT:PANI = 12:88 was an exfoliated composite, where the inorganic sheets are immersed in an amorphous polymeric matrix. FTIR and XRD results indicated that in both samples, the emeraldine form of polyaniline was obtained. The composites were used to modify -by dr. blade technique- a commercial separator for lithium-ion batteries (LIBs) with the aim of increasing its wettability, ionic conductivity and electrochemical performance. The three-dimensional and multilayered network structure of the MMT/PANI composites led to an enhancement of the electrolyte uptake capacity (from 32% in bare separator to 137% and 168% for MMT/PANI_87/13 and MMT/PANI_12/88 modified separators, respectively, after 3 h). The presence of the coating membrane also led to an increase of the ionic conductivity by one order of magnitude in the modified separators respect to the unmodified one. These coated and non-coated separators were used to assemble full cells with LiNi1.5Mn0.5O4 as cathode active material. The capacity fade after 200 cycles was 20% lower in the cell with MMT/PANI_12/88 membrane in comparison with the bare separator. The enhancement of the electrochemical performance of the cells with the coated separator suggests that is a promising strategy to be used in LIBs.

Políticas culturales públicas, teatro comunitario y COVID-19 Fernandez, Clarisa Ines La presente reflexión abordará una serie de consideraciones respecto del rol del Estado en contexto de COVID 19, en relación al sector cultural, y más específicamente al sector cultural comunitario. De ese modo, se trabajará con el caso del teatro comunitario argentino, a través de preguntas como: ¿cuáles han sido las políticas culturales públicas destinadas al sector cultural comunitario?, ¿de qué manera estos sectores (particularmente el teatro comunitario) ha podido reapropiarse de dichas políticas?, ¿cuáles son las estrategias desarrolladas por estos grupos para sostener su actividad en el contexto de COVID-19?Se prevé, entonces, poder realizar un aporte crítico y analítico respecto de casos concretos que permitan pensar la accesibilidad, el alcance y el impacto de las políticas culturales en este contexto de pandemia, respecto de sectores específicos del campo artístico comunitario.

Role of mitochondrial heat-shock proteins and immunophilins in neurodegenerative diseases Daneri Becerra, Cristina del Rosario; Ciucci, Sol Micaela; Mazaira, Gisela Ileana; Galigniana, Mario Daniel Pathophysiologic conditions of neurodegenerative diseases are unquestionably related to protein misfolding. The accumulation of misfolded proteins into relatively ordered structures such as fibrillar intracellular and extracellular amyloids results in tissue lesions that lead to neuronal loss and brain damage. In these pathologies, the occurrence of protein aggregates suggests certain inefficient or insufficient cellular response of those molecular chaperones that should properly assist the folding of the client proteins. In this regard, all the experimental models for neurodegenerative diseases have demonstrated that the overexpression of molecular chaperones provide effective neuroprotection. A subset of these molecular chaperones corresponds to a group of proteins that exhibit peptidylprolyl isomerase enzymatic activity, the immunophilins. Most of the family members of the latter group were first described as responsible of the immunosuppressive response or they were reported as members of the chaperone complex associated with HSP90 in steroid receptor oligomers. In this article we review some aspects of the liaison between molecular chaperones and neurodegenerative diseases, in particular heat-shock proteins and immunophilins with demonstrated influence in the proper function of mitochondria. This article is intended to address a field that represents a yet critical unmet clinical need for the development of neuroprotective molecules focused on potentially novel molecular targets.

Alteraciones en la distribución del consumo de alcohol y la frecuencia de uso de marihuana durante el aislamiento preventivo por Covid-19 en Argentina Michelini, Yanina Noelia; Pilatti, Angelina; Pautassi, Ricardo Marcos La COVID-19 es una enfermedad infecciosa causada por un virusrecientemente descubierto, de la familia de los coronavirus, los cuales puedencausar enfermedades tanto en humanos como en animales (Luo, Chiu, Weng &Chen, 2020). Los primeros casos de COVID-19 se detectaron a fines de 2019 enChina y en marzo de 2020, la enfermedad se convirtió en pandemia, infectandoal momento de escritura de este capítulo a 22 millones de personas, de las cuales800000 han muerto (Dong, Du & Gardner, 2020). La ausencia, por el momento, deuna vacuna y de medicación paliativa de probada eficacia y seguridad (Jin et al.,2020), así como la alta capacidad de transmisión de la enfermedad, han motivadoa los diferentes estados nacionales a instaurar medidas de aislamiento social querestrinjan la circulación comunitaria del virus. En Argentina, el Decreto 297/2020(DNU-2020-297-APN-PTE; Boletín Oficial de la República Argentina) instauró, el19 de marzo de 2020, el aislamiento social, preventivo y obligatorio (ASPO), queestablece el confinamiento de las personas en sus residencias, sin asistencia a suslugares de trabajo ni desplazamiento por rutas, vías o espacios públicos

#COVID-19: Shock y el derecho a tener derechos en las periferias metropolitanas. Un estudio en la Región Metropolitana de Buenos Aires Grinberg, Silvia Mariela; Verón, Eduardo La pandemia del COVID-19, entre tantas otras cosas, expuso y en ese proceso instaló en la agenda pública debates y reflexiones en torno a desigualdades sociales que, aunque de ningún modo son nuevas, explo- sionaron en la agenda pública junto con ella. En pocos días, en los medios de comunicación empezaron a aparecer una serie de preocupaciones por una realidad que no sólo no era sui generis, sino que posee larga data en la configuración de la vida urbana. Ello tanto en el norte como en el sur global y, desde ya, en la Región Metropolitana de Buenos Aires1 (RMBA), donde se desarrolla el trabajo de investigación algunos de cuyos resultados proponemos discutir en este capítulo. Unas desigualdades de la vida urbana cuya sedimentación define parte de la cotidianeidad de los asentamientos precarios del sur global. Así, la falta o la provisión precaria de agua potable, el hacinamiento, la escasez de alimentos, la in- formalidad de los trabajadores, la precaria o nula accesibilidad a internet, el deficitario acceso a la salud, comenzaron a aflorar en la agenda pública como cuestiones centrales del shock COVID-19. Unos meses después de que este shock hiciera lo suyo estas cuestiones no decrecieron; de hecho, no hacen más que confirmar aquello que era una crónica anunciada.

Patterns of Gonadic Development and Operational Sex Ratio Promote Promiscuity of Euxesta bilimeki (Diptera:Ulidiidae) Rodriguez Enriquez, Christian Luis; Perez Staples, Diana Folger; Rios Cardenas, Oscar; Rull Gabayet, Juan Antonio Promiscuous mating systems are widely distributed among animals and can be promoted by operational sex ratios (number of receptive adults; OSR). In populations where OSR is not biased towards any sex, the possibility that males and females mate with several individuals increases. For both sexes to synchronize in time and space for reproduction, adults should possess or simultaneously acquire nutrients required to reach sexual maturity. Among synovigenic (without a full complement of eggs at eclosion) species, nutrient acquisition, protein in particular, may influence the OSR. In the Agave fly Euxesta bilimeki (Hendel) (Diptera: Ulidiidae), both sexes engage in multiple mating and females frequently expel all or part of the ejaculate. Here, we assessed the effect of protein intake on gonadic development, and estimated OSR from field-collected individuals. Body protein content was compared between wild and laboratory individuals with access to different diets, and mating frequency and individual mating rate were analyzed for cohorts at a 1:1 sex ratio. Both sexes required protein ingestion for gonadic development, but there were no differences in protein content between field-collected males and males fed protein and sugar in the laboratory, despite the fact that males assigned 9.3% of their corporal weight to testicles. Euxesta bilimeki is a promiscuous species where both males and females mate multiply with one or several individuals in short periods of time; thus, large testes size may be linked to the need of voluminous ejaculate production, and might be further exacerbated by female ejaculate expulsion.

Endocannabinoid signaling impairs syncytialization: Using flow cytometry to evaluate forskolin-induced cell fusion Etcheverry, Tomás; Accialini, Paula Lucia; Palligas, Marcos Abdul; Loureiro, Florencia; Saraco, Nora Isabel; Martinez, Nora Alicia; Farina, Mariana Cytotrophoblast cells fuse to form the syncytiotrophoblast, the main structure responsible for the placenta's specialized functions. This complex process denominated syncytialization is fundamental for a correct pregnancy outcome. We observed that the endocannabinoid anandamide disrupts syncytialization employing traditional techniques and flow cytometry in BeWo cell line.

Brightest cluster galaxies: The centre can(not?) hold de Propris, Roberto; West, Michael J.; Andrade-Santos, Felipe; Ragone Figueroa, Cinthia Judith; Rasia, Elena; Forman, William; Jones, Christine; Kipper, Rain; Borgani, Stefano; Garcia Lambas, Diego Rodolfo; Romashkova, Elena A.; Patra, Kishore C. We explore the persistence of the alignment of brightest cluster galaxies (BCGs) with their local environment. We find that a significant fraction of BCGs do not coincide with the centroid of the X-ray gas distribution and/or show peculiar velocities (they are not at rest with respect to the cluster mean). Despite this, we find that BCGs are generally aligned with the cluster mass distribution even when they have significant offsets from the X-ray centre and significant peculiar velocities. The large offsets are not consistent with simple theoretical models. To account for these observations BCGs must undergo mergers preferentially along their major axis, the main infall direction. Such BCGs may be oscillating within the cluster potential after having been displaced by mergers or collisions, or the dark matter halo itself may not yet be relaxed.

Linking energy and tourism: energy efficiency in hotels of northeast of Mexico; Enlazando turismo y energía: eficiencia energética en hoteles del noreste de México Luyando Cuevas, José Raúl; Jaramillo Escobedo, José Vicente; Zabaloy, María Florencia; Guzowski, Carina El objetivo de esta investigación es encontrar características comunes entre los hoteles que aplican medidas de eficiencia energética y energía renovable en la zona hotelera de la playa Miramar en Tamaulipas. Los datos se obtuvieron a través de una encuesta a hoteles en la región estudiada. El análisis se realiza con la técnica de Análisis Cualitativo Com-parativo (QCA), considerando diferentes variables, como el número de estrellas y las tarifas de las habitaciones. Los resultados muestran que los hoteles de 4 o 5 estrellas se caracterizan por implementar más procedimientos destinados a lograr la eficiencia energética. Mientras tanto, los hoteles con estrellas bajas se caracterizan por ser muy heterogéneos en la adopción de esas políticas.; The objective of this research is to find common cha-racteristics between hotels that apply energy efficiency and renewable energy measures in the hotel zone of Miramar beach in Tamaulipas. The data was obtained through a poll to hotels in the region studied. The analysis is conducted with the Qualitative Comparative Analysis (QCA) technique, considering different variables, such as the number of stars and the room rates. Results show that hotels with 4 or 5 stars are characterized by implementing more procedures aimed to achieve energy efficiency. Meanwhile, hotels with low stars are characterized by being very heterogeneous in adopting those policies.

Preliminary Evaluation of Allograft from Decellularized Cadaveric Fascia Lata Lacerra, Carolina; Comin, Romina; Cid, Mariana Paula; Schmets, Diego Mauro; Mathieu, Julio Cesar; Lopez Lozano, Tristán; Sobrero, Cecilia Beatriz; Salvatierra, Nancy Alicia El aloinjerto de fascia lata posee capacidad reconstructiva, pues permite la revascularización a partir de los vasos circundantes del lecho receptor e induce fenómenos de migración, multiplicación y adhesión de los componentes celulares del tejido de granulación presentando integración con el tejido receptor. Los injertos de fascia lata son utilizados en diversas especialidades médicas (traumatología y ortopedia, neurocirugía, oftalmología, uroginecología y en medicina estética) y aquellos disponibles se obtienen por diferentes procesos y se conservan por diferentes métodos de acuerdo al fabricante. El objetivo de este trabajo fue obtener, en el Banco de Tejidos del Laboratorio de Hemoderivados de la Universidad Nacional de Córdoba, un aloinjerto de fascia lata cadavérica humana descelularizada desecada (freeze dried) y evaluar la citotoxicidad, la microestructura y el contenido de colágeno. Los resultados mostraron que el método de obtención y procesamiento utilizado permitió obtener un aloinjerto con su estructura histológica conservada y sin evidencia de citotoxicidad. Asimismo, el contenido de colágeno no se vio afectado por el procesamiento.

Interrupción y neutro en Maurice Blanchot; Interaption and neuter in Maurice Blanchot Cortés, Federico Gabriel En este trabajo analizaremos cuatro textos publicados por Blanchot en la Nouvelle Nouvelle Revue Française en 1964 que cinco años más tarde formaron parte de La conversación infinita: "La interrupción", "El Athenaeum", "La voz narrativa" y "El puente de madera". Más allá del criterio temporal que los reúne, consideramos que estos textos permiten organizar buena parte del recorrido de la obra de Blanchot focalizando en la lógica de la interrupción y el neutro en contacto con una una de sus preocupaciones más recurrentes: la reflexión sobre el acto creativo literario, en la medida en que introduce una relación específica entre un yo y un otro que interrumpe el funcionamiento dialéctico de la cultura. Para cumplir con este objetivo, realizaremos un breve recorrido sobre la historia de la obra de Maurice Blanchot a partir de uno de los primeros episodios de su recepción en lengua inglesa: The Blanchot reader publicado por Micheal Holland en 1995.; This article focuses on four texts published by Blanchot in the Nouvelle Nouvelle Revue Française in 1964, which five years later were part of The infinite conversation: "The interruption", "The Athenaeum", "The narrative voice" and "The wooden bridge ". Beyond the temporal criterion that brings them together, we consider that these texts allow us to organize Blanchot's work, focusing on the logic of interruption and the neuter in relationship with one of his most recurrent concerns: the reflection on the literary creative act, insofar as it introduces a specific relationship between a self and an other that interrupts the dialectical functioning of culture. To achieve this objective, we will review the history of Maurice Blanchot's work starting from one of the first episodes of its reception in English: The Blanchot reader published by Micheal Holland in 1995.