Natural fractures distribution in mixed facies: A geomechanical model for heterogeneous reservoirs (Quintuco Formation, Neuquén basin) Tettamanti, Magdalena; García, Micaela Romina; Olivo, Mariana Soledad; Franzese, Juan Rafael; Buchanan, G.V.; Muñoz Olivero, Tobías Manuel; Chiacharelli, F. The distribution of natural fractures in mixed carbonate-siliciclastic reservoirs has a critical influence on fluid flow and reservoir performance. Internal sedimentary and structural heterogeneities represented by facies characteristics, bedding thickness, and fracture networks significantly affect petrophysical parameters. In low permeability reservoirs, fractures enhance fluid flow. Their distribution depends on stress orientation, magnitude, and rock competence, varying with the properties of the sedimentary layer.This study analyse the spatial variability of natural fracture networks within the reservoir heterogeneities using geomechanical facies. It identifies non-competent facies with low fracture intensity and competent facies with high fracture intensity, in order to improve predictions of reservoir behaivour. The research focuses on the Lower and Middle Members of the Quintuco Formation (Loma La Lata Block, Neuqu´en Basin), a heterogeneous reservoir characterised by stratigraphic and structural trapping mechanisms and a developed fracture system, and its surface equivalent, the Picún Leufú Formation (Tithonian-Berriasian).Data collection involved scratch tests and facies analysis supported by detailed sedimentological sections from three core-wells, which were correlated with Gamma Ray logging and X-ray diffraction analyses. Three geomechanical facies were identified: High Resistance-Competent, Low Resistance-Competent, and Non-Competent facies. This work reveals that systematic fractures developed at mechanical contrast interfaces exhibited increased fracture intensity and connectivity, with porosity reaching up to 10%, thereby enhancing the fluid transport. Integrating multi-scale analyses enhances the geomechanical modelling and identifies areas with greater permeability. This work contributes to refining predictive models for exploration and defining development strategies for heterogeneous reservoirs, aiming to optimise the drilling production by targeting highconnectivity zones.

Fichas registro Colección arqueológica Museo histórico de La Viña (Salta) Las actividades que se realizaron en el marco del convenio han sido el acondicionamiento de los objetos arqueológicos, registro de información cuantitativa y cualitativa, Registro fotográfico, Guía de procedimientos y Charla destinada a la comunidad. Participaron todos los integrantes del Grupo de trabajo: Dra. Rossana Ledesma, CPA Carlos Flores, becarios CONICET Lic. Rodrigo Cardozo, Lic. Florencia Ganám Campos, Lic. Valentina Torres López, Paola Avendaño y Lic. Jimena Villarroel. En referencia al presupuesto, la contraparte Municipalidad de La Viña cumplió con lo establecido en el convenio. Se realizó el registro de la colección de bienes arqueológicos ubicados en el Museo de la Viña y ahora cuentan con documentación profesional y conservación. Las fichas RENYCOA son exigidas por la Ley 25.743, de Protección del patrimonio arqueológico y paleontológico, se constituyen la base para la correcta gestión de un museo de arqueología y son fundamentales ante robos de los bienes y activar la búsqueda a nacional por las fuerzas de seguridad. Se planificó el registro de 50 objetos y se realizó esta tarea con 44, esto se debe a que seis objetos no eran piezas arqueológicas. La reproducción de piezas arqueológicas en formato 3D serán publicadas semanalmente en las cuentas de Instagram de Tecnoriginaria ICSOH CONICET UNSa (https://www.instagram.com/tecnoriginaria) y de Cultura y turismo de La Viña (https://www.instagram.com/visitlavina.slaarg/). El registro también fue subido al repositorio institucional Conicet Digital.

Cenozoic exhumation of the Frontal Cordillera revisited: Insights from low-temperature thermochronology studies and other geological constraints Lossada, Ana Clara; Giambiagi, Laura Beatriz; Mackaman Lofland, Chelsea; Suriano, Julieta; Bertoa del Llano, Macarena The Frontal Cordillera is a prominent north–south-trending morphostructural feature in the southern Central Andes, characterized by high topography and relief,monotonic lithologic exposures of Late Paleozoic to Triassic volcanic and intrusive rocks, and thick-skinned deformation. It spans from ~27 to 28◦S, where itgradually transitions into the Puna Plateau, to 34.8◦S, where it terminates abruptly. Most of the along-strike exposure of this tectonic domain coincides spatially withthe modern Argentina-Chile (Pampean) flat-slab subduction segment (27–33◦30′S). Early studies attributed the construction of the Frontal Cordillera to enhancedtransmission of compressional stresses to the overriding plate during the Middle Miocene–Recent southward migration of flat-slab subduction, and the associatedpropagation of deformation to the foreland. However, recent studies have questioned north-to-south diachronism in the structural evolution of the Frontal Cordillera,as well as the extent to which uplift and exhumation were controlled by flat-slab subduction. The timing of deformation in the Frontal Cordillera has been primarilyconstrained through the analysis of synorogenic sedimentary records and crosscutting structural relationships. Thermochronological studies have emerged asadditional, powerful tools for quantifying the exhumation of ranges that comprise the Frontal Cordillera. Despite the proliferation of structural, sedimentological,geo/thermochronological, and geomorphic studies in recent years, fundamental aspects –including the timing and patterns of rock uplift and exhumation in theFrontal Cordillera, and the overall vergence of the Andean orogenic wedge at these latitudes– remain topics of debate. This contribution presents an updated reviewof thermochronological studies carried out in the Frontal Cordillera in recent years, and the implications of these data for regional tectono-thermal evolution in thecontext of other, independent geologic constraints. Our data compilation reveals that the main phase of rock uplift and exhumation preceded the onset of flat-slabsubduction and occurred largely synchronously along strike during the Early to Middle Miocene. This phase of deformation overlapped with the final stages ofcontraction in the Principal Cordillera to the west, suggesting an east-directed propagation of deformation. The results also point to a period of pronounced crustalshortening during the Early Miocene, marked by the simultaneous activity of multiple tectonic domains within the Andean wedge.

First Evidence of Holocene Rodent Parasites from the Argentine Puna: A Paleoparasitological Study of Coprolites from Alero Caído 1 Archaeological Site (Susques, Jujuy) Rodriguez, Valeria Alejandra de los Milagros; Tietze, Eleonor; Urquiza, Silvana Valeria; Beltrame, Maria Ornela This study presents the frst paleoparasitological investigation of rodent coprolites from theArgentine Puna, a high-altitude arid region of the Central Andes. Sixty-six coprolitesrecovered from the Alero Caído 1 archaeological site (Jujuy Province, Argentina) weremorphologically described and microscopically examined. The coprolites were recoveredfrom six stratigraphic levels (Levels 1?6), corresponding to Holocene occupations of the site.Three coprolite morphotypes were identifed. Fifteen samples (23%) were positive toparasitic remains. The parasite taxa found were: Trichuris sp., Paraspidodera sp., Helminthoxyssp., Monoecocestus sp., Viscachataenia quadrata, and Strongylus-type eggs. Morphologicaland parasitological evidence suggest that the coprolites originated from different rodenttaxa: myomorph rodents (Cricetidae) for Morphotype 1, and caviomorph rodents(Caviomorpha), particularly the mountain viscacha (Lagidium viscacia) and likelyOctodontidae species, for Morphotypes 2 and 3. These fndings extend the knowngeographic distribution of ancient parasites in South America and provide novel insightsinto rodent diversity, host?parasite relationships, and paleoecological conditions in highaltitude Andean environments. The results highlight the potential of rodent coprolites aspaleoecological archives for reconstructing faunal communities, biocultural interactions, andenvironmental dynamics in prehistoric Andean landscapes.

Effects of newer veterinary macrolide antimicrobials on the CYP3A-dependent metabolism in cattle liver microsomes: potential Metabolic drug–drug interaction with monensin Ichinose, Paula; Munafó, Juan Pablo; Miró, María Victoria; Valente, Marcela; Moreno Torrejon, Laura; Larsen, Karen Elizabeth; Lanusse, Carlos Edmundo; Lifschitz, Adrian Luis; Virkel, Guillermo Leon Traditional macrolide antimicrobials are inhibitors of cytochrome P4503A (CYP3A) incattle liver. Monensin (MON), an ionophore with a narrow safety margin, undergoesCYP3A-dependent O-demethylation, and its incompatibility with macrolides is well recognized in livestock animals. This study evaluated the effects of newer macrolides—tilmicosin (TIL), tulathromycin (TUL), and gamithromycin (GAM)—on CYP3A-dependentmetabolism in bovine liver microsomes and examined how these drugs influence MONhepatic metabolism. Molecular docking studies were also performed to predict their interactions with CYP3A enzymes. The CYP3A-dependent enzyme activity, testosterone6β-hydroxylase, was inhibited in the presence of triacetyl-oleandomycin (used as a reference macrolide), as well as with MON. None of the other macrolides tested affectedthis enzymatic activity. All macrolides inhibited MON metabolism, but the extent of inhibition observed with triacetyl-oleandomycin was higher than that produced by TIL,TUL, and GAM. Molecular docking analyses indicated that triacetyl-oleandomycin andMON exhibited the highest binding affinities for the active site of CYP3A isozymes, compared with TIL, TUL, and GAM. The agreement between enzymatic data and in silico predictions indicates that TIL, TUL, and GAM are weaker inhibitors of CYP3A-mediatedMON metabolism. The modest reduction in MON hepatic metabolism caused by thesemacrolides—commonly used in cattle feedlots—suggests a low likelihood of clinicallyrelevant drug–drug interactions under typical dosing conditions.

Chitinozoans Butcher, Anthony; Camina, Sonia Clara Chitinozoans are Paleozoic marine organic-walled microfossils thought to be egg-cases of unknown animals. Some authors have also interpreted them to be the tests of a protistan organism. The bottle-, flask-, or urn-shaped vesicles are important for Ordovician through Devonian biostratigraphy. They have also been utilized to indicate paleoenvironmental and paleoclimate change.

Políticas sociales y acciones femeninas: un recorrido historiográfico posible para pensar la relación público privado: Argentina, provincia de Buenos Aires, primeras décadas del siglo XX de Paz Trueba, Yolanda Edith El nexo entre el Estado y los particulares de cara a la atención de necesidades sociales de amplio espectro, es un tema que, estimulado por las cuestiones del tiempo presente regresa una y otra vez al debate público cada cierto tiempo. Uno de esos momentos fue la vuelta de la democracia en Argentina en 1983, que generó un clima favorable al desarrollo de diversos campos de la historiografía nacional, entre ellos el que pensaba al Estado y su relación con la sociedad civil…

Effect of Water Availability on Radial and Height Growth of Nothofagus pumilio Magnin, Noel Amaru; Torres, Cristian Daniel; Villalba, Ricardo; Puntieri, Javier Guido Soil water availability is one of the most relevant environmental factors for plant growth. For Nothofagus pumilio, the most widely distributed temperate tree in the southern hemisphere, the effects of soil water availability on radial and height growth were analyzed by means of an open-air nursery experiment. In the present study, 5-year-old saplings growing under nursery field conditions were assigned to three irrigation treatments: no irrigation, intermediate irrigation, and high irrigation. The irrigation treatments were aimed at emulating three levels of rainfall —dry, mesic, and wet—occurring within the natural distribution of N. pumilio in north-western Patagonia. Increased water availability resulted in longer shoots with more internodes and taller plants with wider trunks. Also, higher soil moisture availability extended the period of trunk diameter growth. Although thegrowth of N. pumilio stands is strongly controlled by light availability, this study shows that microenvironmental differences in soil water induce differences in the length and diameter of the trunk. The effect of water availability would be more pronounced during the driest season of the year.

Structural geology and geophysical constraints of the central-north part of the Sierra de Bonilla, Southern Precordillera, Argentina Sánchez, María Victoria; Ariza, Juan Pablo; Lince Klinger, Federico Gustavo; Boedo, Florencia Lucila; Gimenez, Mario Ernesto; Vujovich, Graciela Irene In central-western Argentina, an early Paleozoic belt comprising mafic and ultramafic rocks spatially associated with metasedimentary successions is exposed along the western margin of the Argentine Precordillera. In this study, we integrate structural and geophysical datasets to constrain the three-dimensional geometry of the southern sector of the Precordillera mafic-ultramafic belt, with focus on in the Sierra de Bonilla area. Structural analysis in the Quebrada Santa Elena evidences polyphase ductile deformation with sinistral shear components, while gravity and magnetic modeling reveal pronouced density and magnetic susceptibility contrasts consistent with the presence of serpentinite lenses at depth. This work refines the understanding of the crustal architecture of the southern Precordillera and provides new insights into the accretionary processes active along the Gondwananmargin during the early Paleozoic.

De los pasillos a las pantallas: La digitalización en la justicia penal argentina tras la covid-19; From the hallways to the screens: Digitalization in the Argentine criminal justice system following covid-19 Lio, Vanesa Gisela; Romero Marchesini, Natalia Durante la pandemia por la covid-19 las tecnologías digitales adquirieron un rol protagónico en Argentina. En el ámbito de la justicia penal, esto se reflejó en la aceleración de la transición hacia un sistema para tramitar electrónicamente los expedientes, lo cual permitió la automatización de algunos procedimientos, el inicio de la despapelización y la gestión remota de las causas. En el presente artículo se analizan, mediante la intersección entre la sociología de la justicia penal y los estudios sociales de la ciencia y la tecnología, los cambios que se produjeron con la incorporación de nuevas tecnologías en el registro y tramitación de las causas penales. El análisis se centra en la reconfiguración de tareas que fue necesaria para garantizar el acceso a la justicia en un contextode excepcionalidad, así como en los cambios que, más allá de la emergencia sociosanitaria, instauraron nuevos modos de acción. Desde un abordaje empírico centrado en un caso local y basado en el análisis documental y en la realización de entrevistas, se describen prácticas judiciales concretas con el fin de identificar los alcances y obstáculos que emergen en el encuentro de la justicia penal y las tecnologías en un escenario sin precedentes. Como resultado, se observa que esta integración no necesariamente conduce a una mayor democratización ni a un mejor acceso a la justicia.; During the covid-19 pandemic, digital technologies acquired a prominent role in Argentina. In the area of criminal justice, this was reflected in the accelerated transition towards a system of electronic processing of files, which allowed for the automatization of some procedures, the beginning of paperless processes, and the remote management of cases. Situated at the intersection of criminal justice sociology and science and technology studies, this article analyzes changes resulting from the incorporation of new technologies in the registry and processing of criminal cases. This analysis focuses on the reconfiguration of tasks that was necessary for guaranteeing access to justice in such an exceptional context, as well as changes that established new modes of action that have extended beyond the public health emergency. Through an empirical case study, based on documentary analysis and interviews, the article describes legal practices with the objective of identifying advances and obstacles that emerged from the encounter of criminal justice and technology in an unprecedented scenario. In conclusion, it is observed that this integration has not necessarily led to greater democratization nor to better access to the justice system.

Trayectorias de (des)identificación religiosa en personas LGBTNb+ de Argentina; Trajectories of Religious (Dis)identification in LGBTNb+ individuals in Argentina; Trajetórias de (des)identificação religiosa em pessoas LGBTNb+ da Argentina Rabbia, Hugo Hernán El estudio explora y caracteriza la adscripción religiosa y las trayectorias de (des)identificación religiosa en personas lesbianas, gays, bisexuales, trans - travesti, no binarias y de otras identidades sexogenéricas (identificadas con la sigla LGBTNb+) de Argentina. Se utilizaron datos cuantitativos del proyecto denominado Censo Diversidad, construidos a partir de un cuestionario online en un muestreo no probabilístico de N=15.204 personas autoidentificadas como LGBTNb+ mayores de 16 años y residentes en diversas regiones del país. En particular, se analizó la religión de crianza y la identificación religiosa actual, tanto de manera independiente, a partir del cruce con la identificación sexogenérica, edad, nivel educativo y región de residencia. Los resultados muestran que, si bien casi el 70% fue criado en el catolicismo, el 73% no se identifica con ninguna religión actualmente, siendo aún mayor la proporción en personas de menor edad, residentes en AMBA y Patagonia. Se identificaron también cinco trayectorias de movilidad religiosa: desidentificación religiosa (62% del total de respuestas), no religión constante (13,3%), identificación religiosa constante (11,4%), cambio interreligioso (8,7%) y conversión religiosa (4,1%). Crecer en entornos religiosos se asoció con mayores experiencias de rechazo familiar, sobre todo en segmentos de más edad. La desidentificación religiosa es significativamente superior a la población general, reflejando una reacción a la discriminación, pero también procesos complejos de búsqueda de espacios inclusivos, autonomía o resiliencia espiritual. Los hallazgos subrayan la necesidad de contextos afirmativos, incluyendo comunidades religiosas abiertas e inclusivas, para garantizar el bienestar de la diversidad sexogenérica.; The study explores and characterizes religious affiliation, and trajectories of religious (dis)identification among lesbian, gay, bisexual, trans - travesti, non-binary, and other sex-gender identities (under the acronym LGBTNb+) in Argentina. Quantitative data from Censo Diversidad were used, collected through an online questionnaire in a non-probabilistic sample of N=15,204 self-identified LGBTNb+ individuals aged 16 or older residing in all the regions of the country. Specifically, we analyzed religious upbringing and current religious identification, both independently and cross-referenced with sex-gender identification, age, educational level, and region of residence. Results show that, while almost 70% were raised as Catholic, 73% currently identify with no religion, with this proportion being even higher among younger individuals, and those residing in the Buenos Aires Metropolitan Area (AMBA) and Patagonia. We also identified five religious mobility trajectories: religious disidentification (62% of total responses), constant non-religion (13.3%), constant religious identification (11.4%), interreligious change (8.7%), and religious conversion (4.1%). Growing up in religious environments was associated with greater experiences of family rejection, especially among older segments. Religious disidentification is significantly higher than in the general population, reflecting a reaction to discrimination, but also complex processes of seeking inclusive spaces, autonomy, or spiritual resilience. The findings underscore the need for affirmative contexts, including open and inclusive religious communities, to ensure the well-being of sex-gender diversity.; O estudo explora e caracteriza a afiliação religiosa e as trajetórias de (des)identificação religiosa em pessoas lésbicas, gays, bissexuais, trans - travestis, não binárias e de outras identidades sexogênero (identificadas pela sigla LGBTNb+) da Argentina. Foram utilizados dados quantitativos do projeto denominado Censo Diversidade, construídos a partir de um questionário online em uma amostragem não probabilística de N=15.204 pessoas autoidentificadas como LGBTNb+ com mais de 16 anos e residentes em diversas regiões do país. Em particular, foram analisadas a religião de criação e a identificação religiosa atual, tanto de forma independente quanto a partir do cruzamento com a identificação sexogênero, idade, nível educacional e região de residência. Os resultados mostram que, embora quase 70% tenham sido criados no catolicismo, 73% não se identificam com nenhuma religião atualmente, sendo a proporção ainda maior em pessoas de menor idade e residentes na AMBA e na Patagônia. Foram também identificadas cinco trajetórias de mobilidade religiosa: desidentificação religiosa (62% do total de respostas), não-religião constante (13,3%), identificação religiosa constante (11,4%), mudança inter-religiosa (8,7%) e conversão religiosa (4,1%). Crescer em ambientes religiosos foi associado a maiores experiências de rejeição familiar, sobretudo em segmentos de maior idade. A desidentificação religiosa é significativamente superior à população geral, refletindo uma reação à discriminação, mas também processos complexos de busca por espaços inclusivos, autonomia ou resiliência espiritual. Os achados sublinham a necessidade de contextos afirmativos, incluindo comunidades religiosas abertas e inclusivas, para garantir o bem-estar da diversidade sexogênero.

Near-T vortex pinning and Dew–Hughes scaling in CaK(Fe1−xNix)4As4 and Ba(Fe1−xCox)2As2 single crystals Haberkorn, Nestor Fabian; Xu, M.; Schmidt, J.; Bud'ko, S. L.; Canfield, P. C. We compare pinning-force scaling in Fe-based superconductors exhibiting moderate vortex fluctuations using the Dew-Hughes formalism. Single crystals of CaK(Fe1−xNix)4As4 (1144) and Ba(Fe1−xCox)2As2 (122) are analyzed by fitting the normalized pinning force, , as a function of the reduced field near Tc, with the peak position at . In 1144, data are well described by single-peak scaling with h0 ≃ 0.30–0.34, consistent with predominant point-like disorder. In 122, h0 shifts from ≈ 0.17–0.23 in underdoped crystals and to ≈ 0.37–0.40 near optimal doping, indicating a mixed δTc/point pinning landscape. Literature datasets show that proton irradiation in lightly doped 1144 preserves a single peak near h0 ≈ 0.33, whereas heavy-ion irradiation in near-optimally doped 122 produces a high-field shoulder. Overall, Dew-Hughes scaling captures the main trends phenomenologically and provides a practical map linking the effective peak position h0 to the prevailing pinning landscape.

Improved Radial-Based Noise Power Estimation in Dual-Polarization Weather Radars Using Adaptive F-Test Filtering Amoia, Matias Ezequiel; Hurtado, Martín; Fernández Michelli, Juan Ignacio This study presents an alternative radial-based algorithm for noise power estimation in dual -polarization weather radars. Polarimetric measurements provide valuable information about atmospheric phenomena. The cross-channel correlation between horizontal and vertical polarized signals allows the detection of noise-only range cells since weather signals typically exhibit high correlation, whereas noise does not. Based on this principle, the proposed approach replaces the median filtering in Beauchamp’s method with an iterative adaptive F-test, improving robustness to outliers. The algorithm is evaluated against both Beauchamp’s polarization-based scheme and Ivic’s nonpolarimetric method, demonstrating that it achieves a well-balanced tradeoff between accuracy and computational efficiency. Results using both simulated and real radar data support its suitability for operational implementation.

The Phylogenetic Data Matrices of Abelisauridae through Time and Methods (With Recommendations) Seculi Pereyra, Enzo Emanuel; Perez, Damián; González Dionis, Javier; Ezcurra, Martin Daniel The phylogenetic history of Abelisauridae has been reconstructed using an increasing number of taxa and different data matrices, many of which are derived from common sources. Despite this, the group still presents notable topological instability. Here, we systematically revise the 40 years of phylogenetic studies on Abelisauridae. We aimed to reconstruct a timeline of matrix iterations to address five key questions: 1) How the abelisaurid phylogenetic matrices changed over time in terms of character and taxon numbers; 2) How many authors have employed differential character weighting in their analyses; 3) What type of characters (e.g., discrete, continuous) have been used in the matrices; 4) What types of calibration methods have been used; and 5) Which were the main goals of these studies. Additionally, we provide recommendations for phylogenetic tree search strategies, time-calibration procedures, character weighting approaches, and the selection and use of data matrices. By synthesizing historical trends and current practices, our work highlights key limitations in the study of the abelisaurid relationships and suggests methodological improvements to strengthen future phylogenetic and macroevolutionary inferences in this clade.; La historia filogenética de Abelisauridae ha sido construida utilizando un número creciente de taxones y matrices de datos, muchas de ellas derivadas de fuentes compartidas. A pesar de ello, el grupo aún presenta una notable inestabilidad topológica con análisis filogenéticos bajo similares enfoques. En este trabajo, realizamos una búsqueda bibliográfica que abarca los 40 años de estudios filogenéticos sobre Abelisauridae. Nuestro objetivo fue reconstruir una línea de tiempo del desarrollo de las matrices para abordar cinco preguntas clave: 1) ¿Cómo han cambiado las matrices filogenéticas de Abelisauridae a lo largo del tiempo en términos de número de caracteres y taxones? 2) ¿Cuántos autores han empleado ponderación de caracteres en sus análisis? 3) ¿Qué tipo de caracteres (discretos o continuos) se han utilizado en las matrices? 4) ¿Qué tipos de métodos de calibración temporal se han aplicado? 5) ¿Cuál fue el objetivo principal de estos estudios? Además, proporcionamos recomendaciones sobre estrategias de búsqueda filogenética, procedimientos de calibración temporal, enfoques de ponderación de caracteres, y la selección y uso de matrices de datos. Al sintetizar las tendencias históricas y las prácticas actuales, nuestro trabajo destaca limitaciones clave en el estudio de las relaciones dentro de Abelisauridae y sugiere mejoras metodológicas para fortalecer futuras inferencias filogenéticas y macroevolutivas en este clado.

La autoconstrucción de la vivienda en México: fuentes y materiales para pensar aportes a la historia de la arquitectura; Self-built housing in Mexico: sources and materials for thinking contributions to the history of architecture; A autoconstrução de moradias no México: fontes e materiais para refletir sobre contribuições para a história da arquitetura Durante, Maria Eugenia ¿Quiénes y qué han escrito sobre los procesos de autoconstrucción de vivienda en México? ¿Cómo se legitimaron e institucionalizaron estas formas de producción del espacio? El presente artículo indaga en aportes de diversos campos de estudio y ámbitos de producción intelectual, rastreando los materiales locales que durante la segunda mitad del siglo XX se abocaron a estudiar, analizar y debatir sobre los procesos de autoconstrucción de la vivienda en México. La investigación se apoya en un trabajo de revisión bibliográfica y recurre a herramientas de la historiografía para desplegar la reflexión sobre quiénes escribieron, en qué contextos y qué aportan para pensar una historia de la autoconstrucción. Esta es una revisión necesaria para fortalecer el reconocimiento de otras formas de producción del espacio en la historia de la arquitectura, debido a que desde mediados del siglo XX serán los arquitectos y arquitectas —junto a otros profesionales— quienes encabezarán los esfuerzos por abordar, analizar y escribir sobre esta problemática.; Who has written about self-build housing processes in Mexico, and what have they written? How were these forms of spatial production legitimized and institutionalized? This article explores contributions from various fields of study and areas of intellectual production, tracing local materials that, during the second half of the 20th century, focused on studying, analyzing, and debating self-build housing processes in Mexico. The research is based on a literature review, using historiographical tools to reflect on who wrote about these processes, in what contexts, and how they contributed to thinking about the history of self-construction. This review is necessary to strengthen the recognition of these alternative forms of space production in the history of architecture, given that, since the mid-20th century, it has been architects —along with other professionals— who have led efforts to address, analyze and write about this issue.; Quem e o que escreveu sobre os processos de autoconstrução de moradias no México? Como essas formas de produção do espaço foram legitimadas e institucionalizadas? O presente artigo investiga contribuições de diversos campos de estudo e áreas de produção intelectual, rastreando os materiais locais que, durante a segunda metade do século XX, se dedicaram a estudar, analisar e debater os processos de autoconstrução de moradias no México. A pesquisa se baseia em um trabalho de revisão bibliográfica, recorrendo a ferramentas da historiografia, para desenvolver uma reflexão sobre quem escreveu, em quais contextos e o que eles contribuem para pensar uma história da autoconstrução. Uma revisão necessária para fortalecer o reconhecimento dessas outras formas de produção do espaço na história da arquitetura, pois, desde meados do século XX, serão os arquitetos e arquitetas —juntamente com outros profissionais— que liderarão os esforços para abordar, analisar e escrever sobre essa problemática.

Producción académica sobre educación STEM/STEAM en Latinoamérica y el papel de la matemática: una revisión sistemática de la literatura; Academic production on STEM/STEAM education in Latin America and the role of mathematics: a systematic literature review Alonso, Jonathan Marcelo; Villarreal, Monica Ester Este artículo presenta una revisión sistemática de literatura sobre educación STEM/STEAM en Latinoamérica, basada en 141 artículos publicados en 73 revistas académicas de Ciencias Sociales y Educación entre 2016 y 2023. El análisis consideró la evolución temporal, la distribución geográfica, los niveles educativos, los tipos de trabajo, las temáticas de investigación y la presencia de la matemática en los artículos de investigación. Los resultados muestran un incremento sostenido de publicaciones a partir de 2020, con predominio de trabajos desarrollados en el nivel de educación superior, estudios investigativos y fuerte representación de Brasil. Se identificaron dos grandes grupos de estudios investigativos: aquellos que emplean STEM/STEAM como etiqueta genérica, centrados en problemáticas de género y trayectorias estudiantiles en carreras STEM, y aquellos que conciben STEM/STEAM como enfoque educativo integrador, donde prevalecen estudios de experiencias educativas y sobre competencias y habilidades relacionadas con el enfoque. Se detectaron vacancias en torno a currículum, evaluación y formación docente, así como un tratamiento limitado de la matemática, que suele ocupar un papel secundario en las experiencias educativas con enfoque STEM/STEAM. Estos hallazgos permiten mapear tendencias y vacíos en la región, aportando orientaciones para futuras investigaciones.; This article presents a systematic literature review on STEM/STEAM education in Latin America, based on 141 articles published in 73 Social Sciences and Education journals between 2016 and 2023. The analysis considered temporal evolution, geographic distribution, educational levels, types of work, research themes, and the presence of mathematics in research articles. The results show a steady increase in publications since 2020, with a predominance of studies conducted at the higher education level, a strong prevalence of research work, and a significant representation of Brazil. Two main groups of research studies were identified: those that use STEM/STEAM as a generic label, focusing on gender issues and student trajectories in STEM careers, and those that conceive STEM/STEAM as an integrative educational approach, where studies on educational experiences and on competencies and skills related to the approach prevail. Gaps were detected regarding curriculum, assessment, and teacher education, as well as a limited treatment of mathematics, which often plays a secondary role in STEM/STEAM-oriented educational experiences. These findings provide a mapping of trends and gaps in the region, offering guidance for future research.

The 36 Cl Bomb‐Pulse in Ice at a High‐Accumulation Site in Antarctica Fifield, L. Keith; Etheridge, David M.; Di Tada, Mariana; Liu, Kexin; Cresswell, Richard G.; Keywood, Melita D. The radioisotope 36Cl was produced prolifically by nuclear weapons testing, principally at Bikini and Enewetak Atolls in the1950s. Much of this was injected into the stratosphere, from where it was dispersed worldwide. The fallout of this bomb‐produced 36Cl has been measured as a function of time in an ice core from a high‐accumulation site in Antarctica. These measurements complement an earlier study in an Arctic ice core. A box model has been developed to describe simultaneously the data from both the two sites. Using an up‐to‐date catalog, the36Cl production of the individual tests has been estimated and used as input to the box model. Production is dominated by high‐yield thermonuclear tests carried out on barges moored in the lagoons of the atolls in the1 950s. Exchange times of 3.7 years for gaseous exchange between stratosphere and troposphere and 4.2 years for gaseous exchange between the stratospheres of the two hemispheres are deduced. The 36Cl bomb pulse constitutes a global tracer with an input function that is well‐defined in space and time, and its exchange between stratosphere and troposphere is dominated by one‐way transport due to its rapid removal once in the troposphere. This latter behavior greatly simplifies the interpretation of the data in terms of an exchange time relative to the 14C bomb pulse. The stratosphere‐troposphere exchange time derived here from the bomb produced 36Cl offers an independent constraint on the flux of ozone between stratosphere and troposphere which agrees well with other more direct estimates.

Los cantos del mendigo. Poesía y tiranía Eiff, Leonardo Daniel El presente trabajo pretende contribuir a una reflexión sobre las “tiranías” delsiglo XX a partir de su relación con los artistas. Para ello, analizamos dospoemas de Ósip Mandelstam consagrados a Stalin: el primero satírico y elsegundo, ditirámbico. El artículo analiza la relación entre lírica e historia,escritura y política, sabiduría y tiranía

COURSE: Cross-scale cOUpling pRocesses in the Solar–tErrestrial system—SCOSTEP’s new program for 2026–2030 Laurenza, M.; Shiokawa, K.; Molina, Maria Graciela; Liu, H. L.; Krivova, N. A.; Funke, B.; Kusano, K.; Habarulema, J. B.; Buresova, D.; West, M. J.; Chau, J.; Zhang, J.; Nesse, H.; Usoskin, I.; Alberti, T.; Alfonsi, L.; Coddington, O.; Dasso, Sergio Ricardo; Fung, Shing F.; Hayakawa, Hisashi; Miyoshi, Y.; Nakamura, R.; Temmer, M.; Stolle, C.; Zong, Q. G.; Briand, C.; Goplaswamy, N.; Safranova, Jana The committee nominated to define the Scientific Committee on Solar–Terrestrial Physics (SCOSTEP) Next Scientific Program (NSP) has identified cross-scale coupling as the overarching theme for conducting and promoting coordinated research and outreach activities in the upcoming period 2026–2030. The program is called COURSE (Cross-scale cOUpling pRocesses in the Solar–tErrestrial system) and is organized in three main scientific focus areas: 1) sources of space weather and space climate; 2) solar wind, magnetosphere, and ionosphere coupling; and 3) external impacts and internal dynamics of the Earth atmosphere. For each Focus Area the NSP committee has identified: 1) long-standing goals, i.e., key questions persistent through SCOSTEP scientific programs and 2) objectives, i.e., precise outcomes that can be addressed over the 5-year program duration, which contribute to achieving the goals over the long term. Moreover, the committee envisions the implementation of the program through identified novel methods, including machine learning and Artificial Intelligence techniques; integrated models; new missions; the combination of multipoint in-situ data with ground observations; improved metadata; and adoption of Findable, Accessible, Interoperable, and Reusable (FAIR) principles.

Precariado y Política: Emprendedurismo y juventudes mejoristas; Precariat and Politics. Entrepreneurship and youth “mejoristas”; Precariado e Política. Empreendedorismo e juventude “mejorista” Welschinger Lascano, Nicolás Sebastían; Seman, Pablo Federico En este artículo sostendremos que el triunfo del mileísmo se alimentó de una transformación sociolaboral que ocurrió en los sectores medios y populares argentinos que vivieron el estancamiento económico de los últimos diez años junto con la crisis de la pandemia, las restricciones de la cuarentena, la reconfiguración del mundo laboral y la espiralización de la inflación. A la victoria de Milei le precede un cambio socio laboral y cultural, un cambio en la sociedad que encontró un actor capaz de performatizar los reclamos de una mayoría que creció a espaldas de y contra la representación política tradicional: la emergencia de una sensibilidad popular que llamamos “mejorismo”. Nuestra tesis es que una de las sedes cruciales de la sensibilidad “mejorista” son las juventudes con trabajos informales y que el triunfo electoral de Milei y la consolidación inesperada de su gobierno se deben en gran parte a que el “mejorismo”, que es parte del apuntalamiento electoral de Milei, es también el sostén del gobierno libertario. Sobre la base de un trabajo etnográfico, a lo largo del artículo describimos el “mejorismo” como la sensibilidad popular emergente que afirma la autonomía individual de los sujetos frente al Estado y la política, que cree que el mejor desempeño social posible se logra a través del esfuerzo personal. El artículo explora la relación entre la producción de la subjetividad mejorista y los nuevos liderazgos políticos que dieron lugar a la afinidad ideológica y política entre importantes sectores de las juventudes con trabajos informales y el programa libertario.; In this article we will argue that the triumph of Mileism was fueled by a socio-labor transformation that occurred in the Argentine middle and popular sectors that experienced the economic stagnation of the last ten years along with the pandemic crisis, quarantine restrictions, the reconfiguration of the labor world and the spiraling inflation. Milei's victory was preceded by a socio-labor and cultural change, a change in society that found an actor capable of performing the claims of a majority that grew up behind and against traditional political representation: the emergence of a popular sensibility that we call "mejorismo." Our thesis is that one of the crucial sites of the "mejorista" sensibility is the youth with informal jobs and that Milei's electoral victory and the unexpected consolidation of his government are largely due to the fact that "mejorismo," which is part of Milei's electoral support, is also the support of the libertarian government. Based on ethnographic work, throughout the article we describe “mejorismo” as the emerging popular sensibility that affirms the individual autonomy of subjects in the face of the State and politics, which believes that the best possible social performance is achieved through personal effort. The article explores the relationship between the production of “betterism” subjectivity and the new political leaderships that gave rise to the ideological and political affinity between important sectors of youth with informal jobs and the libertarian program.; Neste artigo argumentaremos que o triunfo do mileísmo foi nutrido por uma transformação sócio- trabalhista ocorrida nos setores médios e populares argentinos que vivenciaram a estagnação econômica dos últimos dez anos juntamente com a crise pandêmica, as restrições de quarentena, a reconfiguração do o mundo do trabalho e a espiral da inflação. A vitória de Milei é precedida por uma mudança sócio- laboral e cultural, uma mudança na sociedade que encontrou um ator capaz de cumprir as demandas de uma maioria que cresceu atrás e contra a representação política tradicional: o surgimento de uma sensibilidade popular que chamamos de “mejorismo”. ” Nossa tese é que um dos assentos cruciais da sensibilidade “melhorista” são os jovens com empregos informais e que a vitória eleitoral de Milei e a consolidação inesperada de seu governo se devem em grande parte ao fato de que o “mejorismo”, que faz parte do sistema eleitoral de Milei, apoio, é também o apoio do governo libertário. Com base no trabalho etnográfico, ao longo do artigo descrevemos o “mejorismo” como a sensibilidade popular emergente que afirma a autonomia individual dos sujeitos frente ao Estado e à política, que acredita que o melhor desempenho social possível é alcançado através do esforço pessoal. O artigo explora a relação entre a produção de subjetividade melhorista e as novas lideranças políticas que deram origem à afinidade ideológica e política entre importantes setores da juventude com empregos informais e o programa libertário.