Subordinación y vasallaje a partir de La tierra fértil (1999) de Paloma Díaz-Mas; Subordination and Vassalage in La tierra fértil (1999) by Paloma Díaz-Mas Lacalle, Juan Manuel Desde el enfoque del neomedievalismo, este artículo realiza una lectura de la novela histórica La tierra fértil (1999), de la autora española Paloma Díaz-Mas, con el objetivo de abordar las problemáticas de la guerra, la subordinación y el linaje en el marco del feudalismo (y la posibilidad de un neofeudalismo actual). El regreso de Arnau de Bonastre a su feudo despliega en el texto una compleja trama de relaciones familiares y jerarquías sociales de la época, mediante el vínculo, tanto con Bertrán Guerau, su par contrastante, como con su descendencia, los distintos señores a los que responde, y los campesinos, doncellas y soldados que están subordinados a él. Nos interesarán, sobre todo, los efectos de la violencia, la marginación y la injusticia social. Comenzaremos con la exposición de las teorías que plantean que vivimos actualmente en (o que estamos muy cerca de) una sociedad feudal, fundamentalmente debido a la descentralización y el corrimiento del poder. En este sentido, resultará importante comprender las características del feudalismo medieval, en especial en relación con los diversos vínculos entre las personas. Esto conducirá a observar en qué situación quedan en estos contextos ciertas minorías como las mujeres, los musulmanes y los judíos, y cómo esto se plasma en la novela. Por último, el nexo feudo-vasallático entre señor y vasallo permitirá ilustrar la dependencia en sus diversas aristas.; From a neomedieval perspective, this article analyzes the historical novel La tierra fértil (1999), by the Spanish author Paloma Díaz-Mas, with the aim of addressing the issues of war, subordination and lineage in the context of feudalism (and the possibility of a current neo-feudalism). The return of Arnau de Bonastre to his fief unfolds in the text a complex plot of family relationships and social hierarchies of the time, through the link, both with Bertrán Guerau, his contrasting peer, and with his offspring, the various lords to whom he answers, and the peasants, maids and soldiers subordinated to him. We will be interested, above all, in the effects of violence, marginalization and social injustice. We will begin with an exposition of the theories that argue that we are currently living in (or are very close to) a feudal society, mainly due to the decentralization and shift of power. In this sense, it will be important to understand the characteristics of medieval feudalism, especially in relation to the various links between people. This will lead to observe in what situation certain minorities such as women, Muslims and Jews are left in these contexts and how this is captured in the novel. Finally, the fief-vassal nexus between lord and vassal will allow us to illustrate dependence in its various aspects.

Sobre los recorridos transnacionales del Islam en América Latina y España; On the Transnational Pathways of Islam in Latin America and Spain Vagni, Juan José; Salguero Montaño, Óscar Los intercambios simbólicos y las identidades colectivas se han transformado en las últimas décadas en un factor determinante de la gobernanza global. La presencia del islam y de comunidades islámicas constituye una cuestión recurrente en este escenario de múltiples intercambios. Dinámicas locales, regionales y globales impactan en los modos de visibilidad, representación y actuación en el ámbito público de los colectivos musulmanes en España y América Latina. Estas nuevas movilizaciones producen efectos divergentes: abren formas de contacto y contribuyen al cuestionamiento de arraigadas percepciones, pero también generan fronteras imaginarias y nuevas imágenes del “Otro”. La convocatoria a este dossier de 1991. Revista de Estudios Internacionales procura acercarse a esta problemática desde una perspectiva que nos permita alumbrar la dimensión transnacional de dichas comunidades. En ese recorrido abordaremos los modelos de inserción multi e interculturales, la construcción de identidades híbridas y las prácticas e imaginarios emergentes. También se tratarán fenómenos vinculados a los procesos de re-territorialización, trans-territorialización y multiterritorialización, junto a los nacionalismos de larga distancia. Estas aproximaciones nos permitirán revisar no sólo la construcción de identidades comunes y alteridades, sino también su impacto en el diálogo intercultural y político entre ambas regiones.; The symbolic exchanges and collective identities have transformed in recent decades into a decisive factor in global governance. The presence of Islam and Islamic communities constitutes a recurring issue in this landscape of multiple exchanges. Local, regional, and global dynamics impact the visibility, representation, and public action of Muslim communities in Spain and Latin America. These new mobilizations produce divergent effects: they open forms of contact and contribute to questioning entrenched perceptions, but they also generate imaginary borders and new images of the “Other.” The call for this dossier from 1991. Revista de Estudios Internacionales seeks to approach this issue from a perspective that allows us to illuminate the transnational dimension of these communities. In this journey, we will address models of multi- and intercultural insertion, the construction of hybrid identities, and emerging practices and imaginaries. We will also discuss phenomena related to processes of re-territorialization, trans-territorialization, and multi-territorialization, alongside longdistance nationalisms. These approaches will enable us to review not only the construction of common identities and alterities but also their impact on intercultural and political dialogue between both regions.

Service Delivery Redesign for Noncommunicable Disease Management: Assessment of Needs and Solutions Through a Co-Creation Process in Argentina Mazzoni, Agustina; Roberti, Javier Eugenio; Guglielmino, Marina; Nadal, Ana María; Mazzaresi, Yanina; Falaschi, Andrea; García, Patricia J.; Espinoza Pajuelo, Laura; Medina Ranilla, Jesús; Leslie, Hannah H.; Portillo, Juan Manuel Gómez; Masier, María Gabriela; Garcia Elorrio, Ezequiel Introduction: In Argentina, the implementation of a national strategy to reduce the prevalence of noncommunicable diseases (NCDs) has been hampered by challenges at the provincial level. We aimed to design a new model of care for NCDs at the primary care level by conducting a multimodal system assessment and co-design of potential solutions in the province of Mendoza.Methods: We carried out a mixed-methods study with 7 components: evaluation of patterns of care, patient focus groups, cross-sectional standardized population-based phone survey, an electronic cohort follow-up of patients with type 2 diabetes, in-depth interviews with stakeholders, a knowledge test for health care providers on chronic condition management, and a Delphi consensus to provide recommendations from stakeholders.Results: Focus group and in-depth interviews revealed access to primary health care for NCDs was associated with problems with long waiting times and time-consuming procedures for referral to laboratory tests, hospital care, and provision of medication. Mental health care services were particularly limited. Survey respondents (N=1,190) were predominantly covered through public (41%) or social security sectors (54%); 41% fell in the lowest income group. Contact with the health system was high (5.7 annual visits), but 19.7% reported unmet health care needs. Public sector providers perceived they provided high-quality care despite insufficient material and human resources. Within the social security sector, the main challenge was insufficient staff, particularly affecting mental health care. Health care providers showed a higher percentage of correct answers to depression-related questions, but worse results were seen in hypertension and diabetes care. Actions supported by evidence and expert agreement were identified for implementation to guide future system changes.Conclusion: Our research highlights the potential for Argentina's primary care system to initiate transformative, system-level changes aimed at improving health outcomes. We propose an innovative methodological assessment and co-design for improving primary care.

Impact of prior dengue infection on severity and outcomes: meta-analysis of placebo-controlled trials Macchia, Alejandro; Figar, Berta Silvana; Biscayart, Cristián; González Bernaldo de Quirós, Fernán Objetivo. Este estudio evaluó la asociación entre la infección previa de dengue confirmada serológicamente y el riesgo posterior de dengue confirmado virológicamente, dengue grave, hospitalización por dengue, muerte relacionada con el dengue y mortalidad por cualquier causa. Métodos. Se llevó a cabo una revisión sistemática y un metanálisis según las directrices PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses). Se realizaron búsquedas en PubMed, CINAHL, MEDLINE, Cochrane Library y Web of Science de presentaciones de ensayos clínicos de fase III aleatorizados y comparativos sobre la eficacia de las vacunas, que incluyeran datos del grupo placebo e información sobre infecciones previas, publicados entre enero de 1994 y marzo del 2024. Se utilizaron modelos de efectos aleatorios para calcular las razones de posibilidades (OR por su sigla en inglés) combinadas y se evaluó la heterogeneidad. Resultados. Se incluyeron cuatro estudios de tres ensayos de fase III. Los participantes con infección previa tuvieron una menor probabilidad de presentar dengue confirmado virológicamente durante el seguimiento (OR: 0,85; intervalo de confianza [IC] del 95%: 0,75 a 0,98; p = 0,024) y el mismo riesgo de hospitalización por dengue que las personas sin infección previa (OR: 1,18; IC del 95%: 0,92 a 1,53; p = 0,198). Sin embargo, presentaron una tasa de dengue grave superior (OR: 2,91; IC del 95%: 1,23 a 6,87; p = 0,015). No se produjeron muertes relacionadas con el dengue durante el seguimiento. No hubo diferencias estadísticamente significativas en la mortalidad por cualquier causa entre las personas con y sin dengue previo (OR: 1,74; IC del 95%: 0,21 a 14,08; P = 0,76). Conclusiones. La infección previa por dengue redujo significativamente el riesgo de dengue confirmado virológicamente y aumentó el riesgo de dengue grave, pero no tuvo un efecto significativo sobre la hospitalización por dengue, la muerte relacionada con el dengue o la mortalidad por cualquier causa durante el seguimiento. Estos resultados sugieren que es necesario considerar la infección previa un factor de riesgo independiente.; Objective. This study evaluated the association between serologically confirmed prior dengue infection and the subsequent risk of virologically confirmed dengue, severe dengue, dengue hospitalization, denguerelated death and all-cause mortality. Methods. A systematic review and meta-analysis were conducted following PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. PubMed, CINAHL, MEDLINE, the Cochrane Library and Web of Science were searched for reports of phase III randomized controlled trials of vaccine efficacy that had data about the placebo group and information about prior infections and were published between January 1994 and March 2024. Random-effects models were used to calculate combined odds ratios (ORs), and heterogeneity was assessed. Results. Four studies from three phase III trials were included. Participants with prior infection had a lower likelihood of developing virologically confirmed dengue during follow up (OR: 0.85, 95% confidence interval [CI]: 0.75 to 0.98, P = 0.024) and the same risk of dengue hospitalization as those without prior infection (OR: 1.18, 95% CI: 0.92 to 1.53, P = 0.198). However, they had a higher rate of severe dengue (OR: 2.91, 95% CI: 1.23 to 6.87, P = 0.015). No dengue-related deaths occurred during follow up. There were no statistically significant differences in all-cause mortality between individuals with and without prior dengue (OR: 1.74, 95% CI: 0.21 to 14.08, P = 0.76). Conclusions. Prior dengue infection significantly reduced the risk of virologically confirmed dengue and increased the risk of severe dengue, but had no significant effect on dengue hospitalization, dengue-related death or all-cause mortality during follow up. These findings suggest the need to reconsider prior infection as an independent risk factor.; Objetivo. Este estudo avaliou a associação entre uma infecção prévia por dengue confirmada sorologicamente e o risco subsequente de dengue confirmada virologicamente, dengue grave, hospitalização por dengue, morte relacionada a dengue e mortalidade por todas as causas. Métodos. Foram conduzidas revisão sistemática e metanálise de acordo com as diretrizes PRISMA (sigla em inglês para “principais itens para relatar revisões sistemáticas e metanálises”). Foram feitas buscas nas bases de dados PubMed, CINAHL, MEDLINE, Biblioteca Cochrane e Web of Science por relatos de ensaios clínicos randomizados controlados de fase III sobre a eficácia de vacinas que tivessem dados sobre o grupo placebo e informações sobre infecções prévias e tivessem sido publicados entre janeiro de 1994 e março de 2024. Modelos de efeitos aleatórios foram usados para calcular as razões de chances (RCs) combinadas, e a heterogeneidade foi avaliada. Resultados. Foram incluídas quatro publicações de três ensaios clínicos de fase III. Os participantes com infecção prévia tiveram menor probabilidade de desenvolver dengue confirmada virologicamente durante o acompanhamento (RC: 0,85, intervalo de confiança [IC] de 95%: 0,75 a 0,98, P = 0,024) e o mesmo risco de hospitalização por dengue que participantes sem infecção prévia (RC: 1,18, IC de 95%: 0,92 a 1,53, P = 0,198). No entanto, eles tiveram uma taxa mais alta de dengue grave (RC: 2.91, IC de 95%: 1,23 a 6,87, P = 0,015). Não houve mortes relacionadas a dengue durante o acompanhamento. Não houve diferenças estatisticamente significantes na mortalidade por todas as causas entre indivíduos com e sem dengue prévia (RC: 1,74, IC de 95%: 0,21 a 14,08, P = 0,76). Conclusões. A infecção prévia por dengue reduziu significativamente o risco de dengue confirmada virologicamente e aumentou o risco de dengue grave, mas não teve efeito significativo na hospitalização por dengue, morte relacionada a dengue ou mortalidade por todas as causas durante o acompanhamento. Os achados sugerem a necessidade de reconsiderar a infecção prévia como fator de risco independente.

Frente al rumor del archivo: Milcíades Vignati, Liborio Justo y la cuestión indígena en Argentina; Confronting the archive’s rumour: Milcíades Vignati, Liborio Justo and the indigenous issue in Argentina Mailhe, Alejandra Marta Este trabajo forma parte de un proyecto más amplio que se propone comparar los puntos de convergencia y las diferencias en las concepciones del legado indígena y del mestizaje racial y cultural, presentes en las obras de figuras divergentes (provenientes de la antropología, del ensayo de interpretación nacional y de la literatura, del circuito culto tanto como del popular, y desde perspectivas políticas disidentes), en el período comprendido entre el primer peronismo y los inicios de la década del sesenta. En este contexto, este artículo explora dos interpretaciones divergentes respecto del mundo indígena, producidas en la Argentina del siglo XX: el análisis practicado por el antropólogo Milcíades Vignati, sobre un corpus de fotografías tomadas a sobrevivientes de la llamada Campaña al Desierto, y la lectura crítica de la misma Campaña, llevada a cabo por el historiador Liborio Justo, desde el marxismo. Nuestra perspectiva pone el foco en la hermenéutica opuesta que ambos autores despliegan sobre los archivos documentales, al exhumar las huellas de la violencia del Estado, palpable en los cuerpos, en las tomas fotográficas y en los textos del pasado.; This work is part of a larger project that seeks to compare the points of convergence and the differences in the conceptions of the indigenous legacy and of racial and cultural miscegenation, present in the works of divergent figures (coming from anthropology, from the national interpretation essay and from literature, from the cultured as well as the popular circuit; and from dissident political perspectives), in the period between the first Peronism and the beginning of the sixties. In this context, this articleexplores two divergent interpretations of the indigenous world that were produced in twentieth-century Argentina: the analysis carried out by the anthropologist Milcíades Vignati on a corpus of photographs taken of survivors of the so-called “Campaña al Desierto” (Desert Campaign), and the critical reading of the same “Campaña”, carried out by the historian Liborio Justo, from a Marxist perspective. Our perspective focuses on the opposing hermeneutics that both authors deploy on the documentary archives, exhuming the traces of state violence, which can be perceived in the bodies, in the photographs and in the texts of the past.

La educación del futbolista en Argentina entre los años 1960 y 1980; The education of the football player in Argentina between the years 1960 and 1980; A educação do futebolista na Argentina entre os anos 1960 e 1980 Fusetti, Pablo Mediante un método interpretativo genealógico, el siguiente estudio pretende describir e interpretar la aparición del primer modelo educativo del fútbol argentino inserto en las lógicas de poder durante los años 1960-1980. En este marco, se indagan los propósitos y las premisas que expresa dicho modelo de enseñanza en un conjunto de libros que fueron escritos y circularon en el país sobre la preparación del futbolista de la época, articulados éstos al marco histórico implicado. Desplegando así, la noción de fútbol y de cuerpo que subyace en su dinámica, el lugar que ocupa la Educación Física y el posicionamiento docente que ejerce la figura enseñante.; Through a genealogical interpretative method, the following study aims to describe and interpret the emergence of the first educational model of Argentine football within the power dynamics during the years 1960-1980. Within this framework, the purposes and premises expressed by this teaching model in a set of books that were written and circulated in the country about the preparation of football players of the time are explored, linked to the historical context. Thus, unfolding the notion of football and the body underlying its dynamics, the role of Physical Education, and the teaching position exercised by the instructive figure.; Utilizando um método interpretativo genealógico, o seguinte estudo tem como objetivo descrever e interpretar o surgimento do primeiro modelo educativo do futebol argentino inserido na lógica do poder durante os anos 1960-1980. Nesse quadro, investigam-se os propósitos e premissas expressos por esse modelo de ensino em um conjunto de livros que foram escritos e circularam no país sobre a preparação do jogador de futebol da época, articulados no quadro histórico envolto. Exibindo assim a noção de futebol e de corpo que fundamenta sua dinâmica, o lugar ocupado pela Educação Física e a posição docente exercida pela figura docente.

Repensando la movilidad social hortícola desde una perspectiva interseccional: Una visión crítica del concepto de escalera boliviana en la horticultura platense (Buenos Aires, Argentina); Rethinking social mobility in horticulture from an intersectional perspective: A critical view of the Bolivian ladder concept in La Plata's horticulture (Buenos Aires, Argentina) Ambort, Maria Eugenia En este artículo recuperamos el concepto de escalera boliviana (Benencia, 1997) para analizar los procesos de movilidad social en la horticultura argentina, con el objetivo de realizar una aproximación actualizada desde una perspectiva interseccional. El sector productivo hortícola argentino es sumamente dinámico y se ha caracterizado, en las últimas décadas, por el protagonismo de familias trabajadoras de origen boliviano. A pesar de su importancia en la producción de alimentos, presenta condiciones de vida y de trabajo sumamente informales y precarias. Concretamente, analizamos las estrategias desplegadas por las agricultoras y sus familias en los procesos de movilidad por la estructura social hortícola, desde una mirada atenta a cómo las dimensiones de género, raza y clase se intersectan para dar lugar a una particular articulación de las relaciones de poder. El trabajo de campo, situado en el cinturón hortícola platense, uno de las más importantes del país, se basó en entrevistas biográficas con 25 mujeres agricultoras, y observación participante en sus espacios de trabajo y de organización política. Entre los principales resultados, destacamos la configuración sexo-racializada de sus trayectorias hortícolas, atravesadas tanto por su condición de migrantes no-blancas en Argentina, como por el papel que juegan en la división sexual del trabajo.; In this article we bring the concept of the “Bolivian ladder” (Benencia, 1997) to analyse the processes of social mobility in Argentinian horticulture, with the aim of making an updated approach from an intersectional perspective. Argentina’s horticultural production is highly dynamic and one of its main characteristics, in recent decades, has been the protagonism of Bolivian families as work-force. Despite its importance in food production, living and working conditions remain highly informal and precarious. Specifically, we analyse the strategies deployed by women farmers and their families in the processes of mobility through the horticultural social structure. We pay attention to how gender, race and class dimensions intersect giving rise to a particular articulation of power relations. The fieldwork, located in La Plata’s horticultural belt, one of the most important in the country, was based on biographical interviews with 25 women farmers, and participant observation in their work spaces and political organisation. Among the main results, we highlight the sex-racialised configuration of their horticultural trajectories, traversed both by their condition as non-white migrants in Argentina and by the role they play in the sexual division of labour.

Violencia escolar: dilemas conceptuales y epistemológicos: Una revisión crítica en catálogos iberoamericanos; School violence: conceptual and epistemological dilemmas: A critical review of Ibero-American catalogs Patierno, Nicolas El presente artículo se propone llevar a cabo una revisión conceptual de la violencia escolar con el objetivo de sistematizar y analizar la multiplicidad de definiciones y corrientes teóricas que influyen sobre la objetivación de la problemática. Para ello se optó por un trabajo documental orientado a identificar los principales enfoques teóricos en la bibliografía especializada. En este marco, se analizaron trece estudios disponibles en tres catálogos de amplia circulación en Latinoamérica: SciELO, Redalyc y Google Académico. Como resultado, se propone una serie de consideraciones epistemológicas para la realización de investigaciones orientadas en esta temática. El fin último de estos aportes es reforzar el estudio científico de la violencia en ámbitos escolares para desarrollar propuestas educativas que ofrezcan respuestas a una problemática confusa y controversial. Revista indexada en ERIHPLUS, Núcleo Básico de Revistas Científicas Argentinas (CONICET) y Latindex (entre otros).; This article aims to carry out a conceptual review of school violence with the objective of systematizing and analyzing the multiplicity of definitions and theoretical currents that influence the objectification of the problem. For this purpose, a documentary work was chosen aimed at identifying the main theoretical approaches in the specia- lized bibliography. Within this framework, thirteen studies available in three catalogs widely circulated in Latin America were analyzed: SciELO, Redalyc and Google Scholar. As a result, a series of epistemological considerations are proposed for carrying out research focused on this topic. The ultimate goal of these contributions is to reinforce the scientific study of violence in school settings to develop educational proposals that offer answers to a confusing and controversial problem.

La moneda circulante en el Río de la Plata y el surgimiento de un mercado financiero, 1813-1850: de horizonte homogéneo a volatilidad estructural; Money and financial markets in the Río de la Plata after Independence, 1813-1850: From an homogenous horizon to structural volatility Djenderedjian, Julio Cesar; Martiren, Juan Luis En este artículo estudiamos los cambios en los sistemas monetarios y los inicios de un mercado financiero en la región del Río de la Plata durante la primera mitad del siglo xix. Se trata de un contexto de gran incertidumbre y volatilidad impulsado por las guerras de la independencia, la expansión del comercio atlántico y conflictos internos y externos posteriores. Se presentan nuevas series temporales de diversas de cotizaciones monetarias y financieras entre 1823 y 1850 en Buenos Aires y Montevideo, las dos principales plazas mercantiles de la región durante el periodo. Se ofrecen explicaciones sobre las dificultades experimentadas por ambas ciudades para imponer una nueva moneda y sobre la carrera divergente que experimentaron en esas décadas. Se postula, en ese sentido, que esa nueva divergencia tuvo consecuencias tanto dentro de las propias economías como en sus relaciones con otras regiones cercanas del antiguo imperio español y ultramarinas.; This article studies the monetary changes in the Río de la Plata region during the first half of the 19th century. We also address the emergence of new financial markets in a context of great uncertainty and volatility, caused by the independence wars and the ensuing internal conflicts. The relevance of the topic lies in the fact that it covers a groundbreaking experiment with fiat currency in Buenos Aires, and, on the contrary, the setting of a fictional silver standard (with copper currency) in Montevideo, two cities with broad commercial ties, and whose actors have to find creative solutions to deal with the new conditions. This divergence had long-run consequences, both within the economies and in their relationship with neighboring or overseas regions.

New Formulation of Anticorrosive Waterborne Epoxy Coatings for SAE 1010 Steel Protection D'alessandro, Oriana; Byrne, Christian Eduardo; Banera, Mauro; Deya, Marta Cecilia This work presents the formulation and characterization of waterborne epoxy paints designed for SAE 1010 steel protection with three commercial phosphate-based anticorrosive pigments: zinc molybdophos phate (ZMP), zinc aluminum polyphosphate hydrate (ZAPP) and zinc calcium aluminum strontium orthophosphate polyphosphate silicate hydrate (ZCPP). The anticorrosive efficacy of these pigments was evaluated by electrochemical tests in 0.1 M NaCl. Corrosion potential measurements revealed that ZCPP and ZMPshifted the corrosion potential of steel toward more positive values, while ZAPP shifted it to more negative values. Linear polarization curves showed that all three pigments exhibit a good anticorrosive performance, with inhibition efficiency higher than 90%. SEM–EDX analysis of the samples exposed to pigment dispersions in the corrosive medium supported these electrochemical findings. All pigments re sulted in a Fe/O ratio higher than the obtained for the reference steel sample exposed to the 0.1 M NaCl solution without pigment addition, indicating a reduction in corrosion products formation. The epoxy paints were formulated as a typical two-pack system, and each part was prepared separately in a highspeed disperser. The paints were assessed through accelerated tests (salt spray and humidity chambers), electrochemical tests (ionic resistance and electrochemical impedance spectroscopy) and service tests. The results suggest that the three waterborne epoxy paints performed really well, maintaining their protective qualities after 700 days of exposure in service conditions.

La psicología y un proyecto para actuar frente al sexismo Roca, Marcelo Agustin El artículo no presenta resumen según el formato editorial de la revista

Estudio del proceso de coagulación sanguínea mediante la técnica de biospeckle; Study of the blood coagulation process by means of the biospeckle technique Detarsio, G.; Raviola, M.; Tendela, Lucas Pedro; Pratti, A.; Riquelme, B. D.; Galizzi, Gustavo Ernesto En este trabajo se utilizó un enfoque experimental para evaluar la utilidad de la técnica de biospeckle en el estudio del proceso de coagulación sanguínea. Se analizaron los tiempos de tromboplastina parcial con activador en plasma normal, plasma con deficiencia de Factor VIII y la mezcla de ambos. Los resultados muestran una correlación entre los cambios en los patrones de speckle y la formación de la malla de fibrina en las muestras normal y patológica. En consecuencia, la técnica de biospeckle puede ser una herramienta útil para evaluar la hemostasia y los cambios que se generan en la polimerización de la fibrina frente a deficiencias o interferencias.; In this work, an experimental approach was used to evaluate the usefulness of the biospeckle technique in the study of the blood coagulation process. Partial thromboplastin times with activator were analyzed in normal plasma, Factor VIII-deficient plasma, and a mixture of both. The results show a correlation between changes in speckle patterns and fibrin mesh formation in normal and pathological samples. Consequently, the biospeckle technique can be a useful tool to evaluate hemostasis and the changes generated in fibrin polymerization in the face of deficiencies or interferences.

Global Ethnohistory?: Indigenous Agency in the Imperial Fluxes of Colonial Latin America Wilde, Guillermo Luis The historiographical turn to the global has tended to eclipse the analysis of local dynamics and processes. In this context, indigenous agency as a central interest of ethnohistory and historical anthropology needs to be rethought. This article proposes a historiographical revision of some of the main topics which the ethnohistory of colonial Latin America, both as a concept and a methodology, has dealt with. The first part examines the debates on native regimes of historicity against the background of European expansion. The second part focuses on the recent shift of imperial history towards a decentered perspective on power relations and borderlands. The third and final part identifies some recent attempts to put indigenous strategies in dialogue with global circulations of people, texts, and objects.

“No es un jueguito, es algo serio”: Trayectorias de jóvenes freestylers en la (re)configuración del mundo del freestyle en la Córdoba contemporánea; “It´s not just a game, it´s something serious”: Trajectories of Young freestylers in the (re)configuration of the freestyle word in contemporary Córdoba Vittorelli, Lucia Belén Este articulo analiza trayectorias y experiencias de jóvenes freestylers en la ciudad de Córdoba (Argentina). Por un lado, profundiza en los procesos (individuales y colectivos) vinculados a la construcción de estas subjetividades competitivas desde el enfoque de los estudios de la performance. Mientras que, por otro lado, examina la figura del freestyler en el marco de la (re)configuración y disputas del mundo del freestyle rap. Las reflexiones surgen de una investigación etnográfica en curso (2018-2023). Se realizó observación participante en competencias y se desarrollaron entrevistas a las y los jóvenes protagonistas. Como sugiero al final del artículo, las trayectorias permiten observar la producción de criterios de distinción en base al género y la clase social, ordenamientos de acuerdo a la popularización y profesionalización de la práctica musical, y finalmente reconocer la existencia de recorridos posibles que no son (siempre) lineales ni ascendentes.; This article analyzes the trajectories and experiences of young freestylers in the city of Córdoba (Argentina). On the one hand, it delves into the processes (individual and collective) linked to the construction of these competitive subjectivities from the perspective of performance studies. While, on the other hand, it examines the figure of the freestyler within the framework of (re)configuration s and disputes in the world of freestyle rap. The reflections arise from an ongoing ethnographic research (2018- 2023). Participant observation was carried out in competitions and interviews were carried out with the young protagonists. As I suggest at the end of the article, the trajectories allow us to observe the production of distinction criteria based on gender and social class, arrangements according to the popularization and professionalization of musical practice, and finally recognize the existence of possible routes that are not (always) linear or ascending.

Metonimia, materialidad y agencia: Reflexiones sobre la centralidad del libro en el proyecto político de Alfonso X (1252-1284); Metonymy, Materiality and Agency: Reflections on the Centrality of the Book in the Political Project of Alfonso X (1252-1284) Rey, Maria Paula La centralidad del libro en el proyecto político-cultural de Alfonso X ha recibido una atención creciente en los últimos años, especialmente desde la perspectiva de la codicología. Estos estudios han permitido conocer mucho más acerca del proceso de producción y circulación de los códices alfonsíes. Sin embargo, los mecanismos a través de los cuales el libro adquiere su significado y función fundamentales en el plan político y cultural alfonsí han sido sólo parcialmente abordados, desde perspectivas que oscilan entre una interpretación simbólica y otra más pragmática. En el presente trabajo intentaremos problematizar algunos aspectos vinculados a esta centralidad, a través de un análisis de los fundamentos metonímicos de la relación rey-libro y de su articulación discursiva. Propondremos que este fundamento constituye la clave que permite pensar al libro como manifestación material de la agencia del rey.; The centrality of the book in the political and cultural project of Alfonso X has received increasing attention in recent years, especially from the perspective of codicology. These studies have allowed us to learn much more about the production and circulation process of the Alfonsine codices. However, the mechanisms through which the book acquires its fundamental meaning and function in Alfonso’s political and cultural plan have been only partially addressed, from perspectives that oscillate between a symbolic interpretation and a more pragmatic one. In the present work, we will try to problematize some aspects linked to this centrality, through an analysis of the metonymic foundations of the king-book relationship and its discursive articulation. We will propose that this foundation constitutes the key that allows us to think of the book as a material manifestation of the king’s agency.

Ancient genomes reveal a deep history of Treponema pallidum in the Americas Barquera, Rodrigo; Sitter, T. Lesley; Kirkpatrick, Casey L.; Ramirez, Darío Alejandro; Kocher, Arthur; Spyrou, Maria A.; Couoh, Lourdes R.; Talavera González, Jorge A.; Castro, Mario; von Hunnius, Tanya; Guevara, Evelyn K.; Hamilton, W. Derek; Roberts, Patrick; Scott, Erin; Fabra, Mariana; Da Peña Aldao, Gabriela Verónica; Pacheco, Aryel; Rodriguez, Mónica; Aspillaga, Eugenio; Tiliakou, Anthi; Nelson, Elizabeth A.; Giffin, Karen L.; Bianco, Raffaela A.; Rohrlach, Adam B.; de los Ángeles García Martínez, María; Ballesteros Solís, Fabiola A.; Sajantila, Antti; Saunders, Shelley R.; Nores, Rodrigo; Herbig, Alexander; Krause, Johannes; Bos, Kirsten I. Human treponemal infections are caused by a family of closely related Treponema pallidum that give rise to the diseases yaws, bejel, pinta and, most notably, syphilis1. Debates on a common origin for these pathogens and the history of syphilis itself have weighed evidence for the ‘Columbian hypothesis’2, which argues for an American origin, against that for the ‘pre-Columbian hypothesis’3, which argues for the presence of the disease in Eurasia in the Medieval period and possibly earlier. Although molecular data has provided a genetic basis for distinction of the typed subspecies4, deep evolution of the complex has remained unresolved owing to limitations in the conclusions that can be drawn from the sparse palaeogenomic data that are currently available. Here we explore this evolutionary history through analyses of five pre- and peri-contact ancient treponemal genomes from the Americas that represent ancient relatives of the T. pallidum subsp. pallidum (syphilis), T. pallidum subsp. pertenue (yaws) and T. pallidum subsp. endemicum (bejel) lineages. Our data indicate unexplored diversity and an emergence of T. pallidum that post-dates human occupation in the Americas. Together, these results support an American origin for all T. pallidum characterized at the genomic level, both modern and ancient.

Nutrición de las ovejas gestantes y desarrollo de sus crías: ¿El manejo nutricional de las ovejas gestantes tiene efectos a largo plazo sobre sus crías? Bruno Galarraga, María Macarena; Villar, Laura; Cancino, Andrea Karina; Cueto, Marcela Isabel; Villagra, Sebastián El desarrollo deficiente y el bajo peso de los corderos son frecuentes en la cría extensiva, principalmente debido a la mala nutrición de las madres durante la gestación. En este artículo se expone cómo la falta de una buena nutrición durante la preñez afecta la supervivencia del cordero, su capacidad para ganar peso y la calidad final de la canal.

Mortalidad y decaimiento de bosques en el mundo y en la Patagonia Martinez Meier, Alejandro Gabriel; Sergent, Anne Sophie; Dalla Salda, Guillermina; Diez, Juan La supervivencia de los bosques se ve actualmente amenazada por el cambio climático. En las últimas décadas, mortalidad y procesos de decaimientos asociados a eventos de sequías y olas de calor han sido registrados en todos los bosques del mundo, inclusive en nuestros bosques Andino-Patagónicos.

Innovation religieuse et changement social: Dynamiques du phénomène évangélique en Amérique latine Mosqueira, Mariela Analía Cet article cherche à comprendre les dynamiques d’innovation et de standardisation dans le monde évangélique latino-américain. Dans une première partie, l’autrice présente une révision narrative de la littérature académique sur l’évangélisme et le changement social dans la région. Elle analyse ensuite les dynamiques d’innovation et de standardisation du monde évangélique à partir d’une recherche ethnographique et documentaire sur le rock chrétien. Enfin, elle propose une approche méso-réticulaire combinant l’interactionnisme et l’analyse des réseaux sociaux afin d’étudier comment les innovations religieuses se développent et s’institutionnalisent, offrant ainsi une base théorique et méthodologique pour de futures recherches en sociologie de la religion.; This article seeks to understand the dynamics of innovation and standardization in the Latin American evangelical world. First, the author presents a narrative review of the academic literature on evangelicalism and social change in the region. Next, she analyses the dynamics of innovation and standardization in the evangelical world on the basis of ethnographic and documentary research on Christian rock. Finally, she proposes a meso-reticular approach combining interactionism and social network analysis to study how religious innovations develop and become institutionalized, thereby providing a theoretical and methodological basis for future research in the sociology of religion.

Field evaluation of cat fur and TMT odours as repellents of commensal rodents in poultry farms Hillar, Gabriela Solange; Leon, Vanina Andrea; Busch, Maria; Esquenazi, Dana; Fraschina, Jimena Behavioural responses of prey to predation can be used as a management tool in breeding systems where rodents cause economic losses and pose a health risk for humans and domestic animals. In this work we assessed the effect of cat fur and TMT odours on food consumption and activity of rodents in poultry farms of the Buenos Aires Province, Argentina. The study was conducted in 8 poultry farms that are devoted to breeding broiler chickens. At each farm we randomly selected three sheds, which were assigned to TMT, cat fur odour or control treatments. Odours were applied on a 5 ×5 cm piece of cloth that was either placed inside feeders or over footprint trackingtiles. Food consumption was measured in each shed at 20 stations with 10 g of wheat seeds, while rodent activity was measured in 10 footprints tracking tiles. Both feeders and footprint tracking tiles were placed outside sheds along walls. Food consumption and activity were assessed 2, 4 and 6 days after the application of treatments. The odour of cat fur caused a reduction in food consumption by rodents, but there was not a significant effect on activity. We did not detect an effect of TMT neither on food consumption, nor in activity. We conclude that cat fur has the potential to be used as repellent for commensal rodents in field conditions. However, its applicationfor large-scale rodent control requires the development of a product that incorporates the active substance responsible for the aversion effect.