Bullying en adolescentes argentinos: Recomendaciones para su evaluación e intervención Resett, Santiago Alejandro El bullying es una agresión intencional reiterada y con un desbalance de poder físico y/o mental entre quien lo sufre y quien lo realiza. Esta conducta es un importante factor de riesgo para la salud mental de los adolescentes a nivel psicológico, social y físico. A nivel de la Argentina, como de otras naciones de la América Latina, todavía es mucho lo que falta investigar, mayormente a nivel de intervenciones científicas para su prevención. El presente estudio llevó a cabo una revisión de lo investigado en la temática a nivel teórico, como en los instrumentos científicos para su evaluación. También se aportan aspectos a considerar a la hora de evaluar esta problemática. Por otra parte, se delinean recomendaciones para su prevención en nuestro contexto. Cómo conclusión se puntualiza cómo deberían seguir los futuros estudios del tema en nuestro país, en donde los estudios son escasos y necesarios.

Unravelling the genetic mechanisms and paleoenvironmental controls of early Cretaceous Oyster Mass occurrences (OMOs), Neuquén Basin, west-central Argentina Toscano, Agustina Gabriela; Lazo, Dario Gustavo; Schwarz, Ernesto Lower Valanginian oyster mass occurrences (OMOs) from the Neuqu en Basin of Argentina are analyzed using a multidisciplinary approach, including the description of their sedimentological signature and stratigraphic contacts, assessment of taphonomical attributes, and paleontological and paleoecologicalcharacteristics. These OMOs present a wide distribution in the study area, with lateral continuity for at least 2.5 km and up to 12 m thick. They occur within a single stratigraphic interval, constrained in terms of sequence stratigraphy and biostratigraphy. Three stacked tabular OMOs separated by mudstone levels were recorded in all the studied localities. The associated lithofacies point to a mainly outer ramp paleoenvironment, below storm wave base and occasionally disturbed by exceptional, distal storm flows.Internally, the OMOs share a common vertical trend characterized, from base to top, by a gradual increase in oyster abundance and a transition from mainly reclining, disarticulated oysters to articulated, cementing oysters conforming build-ups. Hence, a mainly biogenic origin is proposed, with autobiostromes grading vertically to bioherms. This vertical trend was interpreted in terms of development stages, namely, colonization, expansion, climax and extinction, which were in turn related to specifi paleoenvironmental controls. Particularly, the OMOs establishment and development were associated to low sedimentation rates, salinity fluctuations and high nutrient input as a result of high primary productivity.At a larger scale, the overall paleoenvironmental conditions and subtropical geographical position of the basin were detrimental for most reef builders typical of the Cretaceous period (e.g., corals, sponges, rudists), and could have favored oyster proliferation and OMOs development instead.

Effects of urbanization-related disturbances on macroinvertebrate communities in a Patagonian river system: insights from a functional approach Williams Subiza, Emilio Adolfo; Brand, Cecilia; Assef, Yanina Andrea; Grech, Marta Gladys; Miserendino, Maria Laura The expansion of urban areas has led to land-use changes that affect aquatic biodiversity and ecosystem processes through several ways, such as increased runoff, water pollution, habitat homogenization, and disturbance of the natural flow. It is well known that urbanization induces profound changes in freshwater macroinvertebrate communities, but relatively few studies have approached this topic using trait-based methods. This severely limits our ability to monitor and predict potential alterations of ecosystem processes. We here provide empirical evidence about the effects of urbanization-related changes on the trait composition and functional diversity of freshwater macroinvertebrates from Patagonia (Argentina). Macroinvertebrate sampling and environmental characterization were carried out in 13 study sites distributed across three water courses in the Futaleufú river basin. We found changes in environmental conditions over the urban impact gradient, in turn accompanied by variation in functional diversity and trait composition of aquatic macroinvertebrates. Specifically, we detected lower functional diversity in urban and post-urban reaches, mainly attributed to shifts in the distribution of taxa within the functional space, rather to the extirpation of functionally distinct taxa located at the edges of it (i.e., func- tional evenness and dispersion decreased, but functional richness remained constant). We also found signs of functional homogenization at the most impaired sites, where gatherers and tegument-breathing taxa dominated. These changes were mainly explained by conductivity, biological oxygen demand, and oxygen levels in the water column.

Study of the properties of a composite material Fe78Si9B13 / GNP in an epoxy matrix Pagnola, Marcelo Rubén; Useche, Jairo; Faig, Javier Alejandro; Ferrari, Sergio; Martinez Garcia, Ricardo This study investigates the properties of a composite material obtained by mixing Fe78Si9B13 metallic powders (at %) with graphene nanoplates (GNP) in an epoxy matrix. Four composite types were created with GNP weight proportions of 0%, 0.5%, 1.0%, and 1.5%. The composites were embedded in transparent epoxy with weight proportions of 10%, 15%, and 20%, and then filled into 7 x 20 mm cylindrical probes. Twelve samples were prepared, and another 12 samples were subjected to a longitudinal magnetic field of 1 kG. All samples were tested with a Universal Testing Machine (Model WDW 10E) up to a maximum force of 20 kN. The experiment recorded deformation (∆H) vs. load force. Most samples showed a maximum compression resistance of 390 MPa, except for a few that did not exceed 100 MPa. The magnetically oriented samples showed a greater elastic limit in the range of 200 to 270 MPa. Optical microscopy was used to observe the ordering of the particles after the application of the magnetic field. Scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction were used to characterize the structure of the composite components. A vibrating sample magnetometer (VSM) was used to characterize the magnetic behavior of the metallic powders in the composite.

Primeras miradas: Victoria Ocampo como escritora y gestora cultural en la prensa de los años veinte; First Looks: Victoria Ocampo as a Writer and Cultural Manager in the Press of the 1920s González, María Soledad Este artículo se propone indagar, desde la disciplina histórica, los primeros pasos de Victoria Ocampo en la esfera pública a partir de la articulación entre escritura y gestión y, las tempranas recepciones que suscitó en la prensa. Desde la recuperación de algunas notas periodísticas de la época, pasajes de Testimonios y de “Viraje”, cuarto volumen de su Autobiografía, junto a ciertas entradas en su correspondencia, se intenta dialogar con el contexto de los años veinte en el escenario nacional y transnacional.; This article aims to investigate, from the field of historical discipline, the first steps of Victoria Ocampo in the public sphere based on the articulation of writing and management and the early receptions it aroused in the press. From the recovery of some journalistic notes of the time, passages from Testimonies and “Viraje”, the fourth volume of his Autobiography, together with certain entries in his correspondence, attempts to dialogue with the context of the 1920s on the national and transnational stage.

Afectados Ambientales y el Conflicto por los “Basurales Petroleros” en la Provincia de Neuquén, Argentina Acacio, Juan Antonio El avance de la frontera hidrocarburífera en Argentina se expresa, desde el año 2013, en el desarrollo de la actividad para extraer hidrocarburos no convencionales mediante la técnica de la fractura hidráulica, o fracking. Esta actividad cobró relevancia en Neuquén, donde el sector petrolero tiene centralidad en la economía y permea en la vida política, social y cultural de la provincia. Con el inicio de la explotación se desarrollaron en varios puntos de la provincia conflictos de distinta intensidad debido a los impactos ambientales, en la salud y en la alteración de la vida cotidiana de distintos grupos sociales que esta actividad genera. El presente trabajo analiza, desde una perspectiva sociológica cualitativa, y de la mano de los aportes de la ecología política, el conflicto y el proceso organizativo de afectados ambientales que generó la expansión de las plantas de tratamiento de los desechos de la industria hidrocarburífera en la periferia de la ciudad de Neuquén.

Spatial modeling tool to assess and rank peri-urban land use in an agricultural region of the Midwestern United States Agost, Lisandro; Velázquez, Guillermo Ángel America is the continent with the largest area of genetically modified crops, the United States being the leading producer. Numerous studies show a panorama of potential exposure from agricultural pesticide use for this types of crops near to cities across a vast region of the United States. For the reasons mentioned above, we have chosen to investigate the following issues in this study: How does the implementation of an indexbased spatial modeling tool effectively rank the proximity of peri-urban crops, and what factors impact its effectiveness across diverse peri-urban agricultural landscapes? To address these questions, the research employs the Crop Proximity Index (CPI) model in various cities across the Midwest region of the United States. Six hundred and seventy cities in the state of Iowa were selected, and their peripheries were analysed using weighted perimeter rings, from 0 to 2000 m. The Crop Proximity Index was used to simulate a model of proximity to crops by considering the spatial quantification occupied by agriculture, forest cover, shrubs, pastures and buffer zones. This index varies from 0 to 1 and serves to rank the cities under study. It was estimated that a Crop Proximity Index equal to or >0.8 is a good approximation to a model with less proximity of crops and that only 62 cities (9%) meet this condition. Some 457 cities (68%) have CPIs equal to or <0.5 due to the large areas of crops and the low peripheral forest levels. The CPI is an index that makes it possible to obtain vital exploratory data in order to focus on future research that would determine how the proximity of agro-industrial crops has possible negative consequences for the environment and human health in greater detail.

Conversación pública sobre vacunas en la pandemia de covid-19 en Argentina, 2021–2022; Public conversation on vaccines during the covid-19 pandemic in Argentina, 2021–2022 Demonte, Flavia Carolina; Bruno, Daniela; Lozano, Leandro; Mena, Maria Florencia; Pereira, Andrés Ante la caída de las coberturas vacunales y la circulación informativa sobre salud, las conversaciones en el entorno público/mediático digital constituyen un ámbito de estudio relevante para el campo de la comunicación en salud. A través de un estudio cualitativo, basado en el análisis de publicaciones del gobierno, la prensa digital y las redes sociales, caracterizamos la conversación pública sobre vacunas –en términos de temas, momentos, ejes y encuadres en Argentina en el período 2020-2021– signada por el debate sobre las vacunas covid-19. Los resultados muestran que la conversación pública se centralizó en la vacunación contra el covid-19, se estructuró en dos momentos diferenciados (producción de vacunas y campaña de vacunación) y bajo encuadres morales sustentados en la vacunación como práctica de cuidado y la ciencia como voz autorizada. En simultáneo, las dudas sobre la seguridad y eficacia de las vacunas estructuraron argumentos de reticencia vacunal, que entendemos como parte de prácticas extendidas, asociadas con las desconfianzas hacia las instituciones y reinterpretaciones del conocimiento científico y del cuidado.; In the face of declining vaccination coverage and the dissemination of health-related information, conversations in the public/mediatic digital sphere constitute a relevant study area for the field of health communication. Through a qualitative study based on the analysis of government publications, digital press, and social media, we characterize the public conversation on vaccines – in terms of topics, moments, axes, and framings in Argentina during the 2020-2021 period – marked by the debate on covid-19 vaccines. The results show that public conversation focused on covid-19 vaccination, structured in two distinct moments (vaccine production and vaccination campaign), and under moral framings grounded in vaccination as a care practice and science as an authoritative voice. Simultaneously, doubts about the safety and efficacy of vaccines shaped arguments of vaccine hesitancy, which we understand as part of extended practices associated with distrust towards institutions and reinterpretations of scientific knowledge and care.

Conversación pública sobre vacunas en la pandemia de covid-19 en Argentina, 2021–2022; Public conversation on vaccines during the covid-19 pandemic in Argentina, 2021–2022 Demonte, Flavia Carolina; Bruno, Daniela; Lozano, Leandro; Mena, Maria Florencia; Pereira, Andrés Ante la caída de las coberturas vacunales y la circulación informativa sobre salud, las conversaciones en el entorno público/mediático digital constituyen un ámbito de estudio relevante para el campo de la comunicación en salud. A través de un estudio cualitativo, basado en el análisis de publicaciones del gobierno, la prensa digital y las redes sociales, caracterizamos la conversación pública sobre vacunas –en términos de temas, momentos, ejes y encuadres en Argentina en el período 2020-2021– signada por el debate sobre las vacunas covid-19. Los resultados muestran que la conversación pública se centralizó en la vacunación contra el covid-19, se estructuró en dos momentos diferenciados (producción de vacunas y campaña de vacunación) y bajo encuadres morales sustentados en la vacunación como práctica de cuidado y la ciencia como voz autorizada. En simultáneo, las dudas sobre la seguridad y eficacia de las vacunas estructuraron argumentos de reticencia vacunal, que entendemos como parte de prácticas extendidas, asociadas con las desconfianzas hacia las instituciones y reinterpretaciones del conocimiento científico y del cuidado.; In the face of declining vaccination coverage and the dissemination of health-related information, conversations in the public/mediatic digital sphere constitute a relevant study area for the field of health communication. Through a qualitative study based on the analysis of government publications, digital press, and social media, we characterize the public conversation on vaccines – in terms of topics, moments, axes, and framings in Argentina during the 2020-2021 period – marked by the debate on covid-19 vaccines. The results show that public conversation focused on covid-19 vaccination, structured in two distinct moments (vaccine production and vaccination campaign), and under moral framings grounded in vaccination as a care practice and science as an authoritative voice. Simultaneously, doubts about the safety and efficacy of vaccines shaped arguments of vaccine hesitancy, which we understand as part of extended practices associated with distrust towards institutions and reinterpretations of scientific knowledge and care.

An animal model for the study of binge-like eating episodes preceded by frustration events in females and non-food deprived animals Serafini, Matías; Cuenya, Lucas Introduction: Previous data from our laboratory show that frustration events could function as an important factor in the etiology and maintenance of the binge-like eating episodes. However, in previous experiments, male Wistar rats deprived of food were used. This reduced the external validity of the phenomenon as an animal model of binge-eating episodes since they are more prevalent in women and can occur without prior energy deficit. Objective: To explore the presence of increased intake after a previous frustration event in two new experimental conditions: male rats without food deprivation (experiment 1) and female rats with food deprivation at 83% of their ad libitum weight (experiment 2). Method: The animals had access to a 32% sweetened solution during five daily trials of five minutes each. During the trials 6, 8 and 10, half of the animals received the reinforcer normally, and the other half after a delay of 10 min. In the trials 7, 9 and 11 all animals received the reward without prior delay. Results: The model was replicated in the two experiments. Discussion: These data generalize our previous observations to two novel conditions, one sexual and the other motivational, which results in an increase in its external validity.

An animal model for the study of binge-like eating episodes preceded by frustration events in females and non-food deprived animals Serafini, Matías; Cuenya, Lucas Introduction: Previous data from our laboratory show that frustration events could function as an important factor in the etiology and maintenance of the binge-like eating episodes. However, in previous experiments, male Wistar rats deprived of food were used. This reduced the external validity of the phenomenon as an animal model of binge-eating episodes since they are more prevalent in women and can occur without prior energy deficit. Objective: To explore the presence of increased intake after a previous frustration event in two new experimental conditions: male rats without food deprivation (experiment 1) and female rats with food deprivation at 83% of their ad libitum weight (experiment 2). Method: The animals had access to a 32% sweetened solution during five daily trials of five minutes each. During the trials 6, 8 and 10, half of the animals received the reinforcer normally, and the other half after a delay of 10 min. In the trials 7, 9 and 11 all animals received the reward without prior delay. Results: The model was replicated in the two experiments. Discussion: These data generalize our previous observations to two novel conditions, one sexual and the other motivational, which results in an increase in its external validity.

Evaluating the climatic suitability of Engytatus passionarius Minghetti et al. (Heteroptera, Miridae) as a biological control agent of the invasive stinking passion flower Passiflora foetida L. in Australia through ecological niche models Minghetti, Eugenia; Dellapé, Pablo Matías; Maestro, Mariano; Montemayor Borsinger, Sara Itzel Passiflora foetida is a climbing vine, native to the Neotropical Region that is causing major economic and ecological damage in Australia, where it is rapidly spreading. Traditional control options, such as cutting, manual uprooting, and herbicide applications are only effective for local management. Currently, the plant bug Engytatus passionarius is the most promising biological control agent. Specificity tests performed in its native range in Argentina suggest it is highly specific to the plant, and it has not been observed in the field associated with other plants. As climate determines the establishment of insects, knowing if the environmental conditions suit their requirements is key to introducing a species in a region. Also, an overlap between the climatic niches of species is an indicator of similar requirements. To explore the possibilities of a successful establishment of E. passionarius in Australia, ecological niche models (ENM) were built for the plant bug and for the vine and their overlap was measured. The ENM projected to Australia recognized suitable environmental conditions for the establishment of E. passionarius in several regions where P. foetida is present, both for current and future scenarios. Moreover, the niche of the plant bug is almost completely overlapped with that of the vine. All the aforementioned evidence seems to indicate that E. passionarius has a good chance to become an effective biological control agent of P. foetida.

Impact of vineyards on habitat's thermal conditions and functional traits of a lizard in the central Monte Desert, Argentina Méndez Osorio, Yamila Gimena; Gómez Alés, Carlos Rodrigo; Avellá Machado, Elín Araceli; Acosta, Juan Carlos Vegetation modulates the spatial arrangement of microclimates and changes in land cover due to agriculturalactivities alter thermal landscapes. Lizard body temperature is strongly influenced by the thermal quality of theenvironment at the microhabitat level and land management for agriculture in arid environments can reduce thethermal quality of a species’ habitat. Our objective was to evaluate if there are variations in the thermal biologyand thermal quality of the habitat in Liolaemus darwinii, at a site modified by vineyards and in a natural habitat inthe central Monte Desert, Argentina. Our findings indicate that vineyard-induced habitat modifications have animpact on operative temperatures and the thermal quality of the environment. This variability, in turn, is likelyto bring about changes in locomotor performance traits and thermoregulatory strategies of Liolaemus darwinii.Our conclusion highlights the efficient thermoregulatory capabilities of L. darwinii across both sites. Furthermore,we propose that the analysis of changes in thermal landscapes, habitat thermal quality, and their correlation withorganisms’ thermal traits can serve as a practical tool for assessing the impact of agricultural activities in aridenvironments. Additionally, it aids in the development of conservation strategies that promote the preservationof neighboring native vegetation.

Genetic study in Argentinian patients with clinical Long QT Syndrome diagnosis Dionisio, Leonardo Raul; Stupniki, Sofia; Aztiria, Eugenio Manuel; Rias, Ezequiel Ignacio; Dye, Leandro; Onetto, Leonardo; Gregorietti, Franco; Keegan, Roberto; Spitzmaul, Guillermo Federico Long QT Syndrome (LQTS) is a genetic cardiac condition in which varying degrees of severity and treatment response. Three are primarily affected by mutations that cause cardiac ion channel dysfunction. In Argentina, most of the LQTS diagnoses are made by clinical examination and ECG analysis. In this study, we evaluated a group of individuals to correlate their clinical diagnosis of LQTS with genetic variations. Using gDNA isolation, PCR, and exome sequencing, we screened the coding sequences of the KCNQ1, KCNH2, and SCN5A genes. We identified several changes in these genes, most of them previously described in the literature, but also a novel variation. We found an alteration in the sequence of KCNQ1 exon 16 which did not allow us to amplify it. This is the first analysis of genetic variations in LQTS in Argentina conducted by a national research laboratory. The combination of the detected variations may explain the prolongation of the QT interval observed in the ECG of some of the individuals and may help to improve the treatment making it more rational as well as provide genetic counselling to first-degree relatives

Comportamiento de larvas de Aedes albifasciatus parasitadas por el Nematodo Strelkovimermis spiculatus Los datos corresponden al comportamiento de larvas de Aedes albifasciatus en relación con el tiempo de dormancia de los huevos de los cuales eclosionaron y con el parasitismo producido por Strelkovimermis spiculatus. El registro de los datos se realizó en condiciones de laboratorio utilizando el programa Ethology 2.25 (Ottoni 2000).

Non-native barnacle accelerates the recovery from disturbance of intertidal mussel beds Soria, Sabrina Andrea; Gutierrez, Jorge Luis Ceferino; Palomo, Maria Gabriela The barnacle Balanus glandula is a non-native species inhabiting Argentinian rocky shores. The native mussel Brachidontes rodriguezii forms extensive beds in the mid-intertidal zone of these shores, generating a physical structure that determines the diversity of the assemblage. Yet, this native foundation species is prone to mortality due to disturbances associated with extreme climatic events. The aim of this study was to experimentally investigate the role of early-colonizing, non-native B. glandula in the succession process and the recovery of mussel beds following disturbance. Experimental plots were demarcated in the mussel bed and initially cleared of mussels, to produce exposed rock surfaces similar to those that form after a disturbance event. Half of these plots were kept barnacle-free throughout the experiment by removing all recruiting B. glandula, whereas all recruits were allowed to develop in the remaining plots. Our results showed that mussel cover at the end of the experiment was higher in the plots with barnacles. The plots with and without barnacles followed different successional trajectories, with increasing limpet densities and reduced cover of crustose algae in the presence of barnacles during early successional stages. The results indicate that the presence of B. glandula at the early stages of succession can alter successional dynamics and facilitate the recovery of mussel bed cover after disturbance events. More broadly, this study also shows that non-native species, although frequently considered a ‘nuisance’, can accelerate the recovery of foundation species that characterize entire communities and sustain the greatest share of their diversity.

Comportamiento de larvas de Aedes albifasciatus parasitadas por el Nematodo Strelkovimermis spiculatus Comportamiento de larvas de Aedes albifasciatus provenientes de huevos de diferentes edades, parasitadas por Strelkovimermis spiculatus.

Soil microbial functional profiles of P-cycling reveal drought-induced constraints on P-transformation in a hyper-arid desert ecosystem Gao, Yanju; Tariq, Akash; Zeng, Fanjiang; Sardans, Jordi; Graciano, Corina; Li, Xiangyi; Wang, Weiqi; Peñuelas, Josep Soil water conditions are known to influence soil nutrient availability, but the specific impact of different conditions on soil phosphorus (P) availability through the modulation of P-cycling functional microbial communities in hyper-arid desert ecosystems remains largely unexplored. To address this knowledge gap, we conducted a 3-year pot experiment using a typical desert plant species (Alhagi sparsifolia Shap.) subjected to two water supply levels (25 %–35 % and 65 %–75 % of maximum field capacity, MFC) and four P-supply levels (0, 1, 3, and 5 g P m−2 y−1). Our investigation focused on the soil Hedley-P pool and the four major microbial groups involved in the critical phases of soil microbial P-cycling. The results revealed that the drought (25 %–35 % MFC) and no P-supply treatments reduced soil resin-P and NaHCO3-Pi concentrations by 87.03 % and 93.22 %, respectively, compared to the well-watered (65 %–75 % MFC) and high P-supply (5 g P m−2 y−1) treatments. However, the P-supply treatment resulted in a 12 %–22 % decrease in the soil NH4+-N concentration preferred by microbes compared to the no P-supply treatment. Moreover, the abundance of genes engaged in microbial P-cycling (e.g. gcd and phoD) increased under the drought and no P-supply treatments (p < 0.05), suggesting that increased NH4+-N accumulation under these conditions may stimulate P-solubilizing microbes, thereby promoting the microbial community´s investment in resources to enhance the P-cycling potential. Furthermore, the communities of Steroidobacter cummioxidans, Mesorhizobium alhagi, Devosia geojensis, and Ensifer sojae, associated with the major P-cycling genes, were enriched in drought and no or low-P soils. Overall, the drought and no or low-P treatments stimulated microbial communities and gene abundances involved in P-cycling. However, this increase was insufficient to maintain soil P-bioavailability. These findings shed light on the responses and feedback of microbial-mediated P-cycling behaviors in desert ecosystems under three-year drought and soil P-deficiency.

Arqueología de la arqueología: leer bajo nuestra piel; Archeology of archeology: reading under our skin Alcala Riff, Federico Oscar La arqueología foucaultiana ha pasado por distintas etapas desde su auge en la década de 1960 y actualmente parece constituirse en una especie de pieza de museo un tanto incómoda para el pensamiento contemporáneo: es objeto de cierta veneración, pero al mismo tiempo resulta difícil atribuirle alguna autonomía que no tenga en cuenta a la genealogía o algún otro elemento teórico que la acompañe. El propio Foucault contribuyó parcialmente a ello. Sin embargo, a partir de una aproximación relacionada con la lectura como concepto, se podría arrojar nueva luz sobre esta pieza ineludible del pensamiento occidental y sobre la reflexión vinculada con el archivo en general.; Foucauldian archaeology has gone through different stages since its rise in the 1960s and now seems to be a kind of museum piece that is somewhat uncomfortable for contemporary thought: it is the object of a certain veneration, but at the same time it is difficult to attribute to it any autonomy that does not take into account genealogy or some other theoretical element that accompanies it. Foucault himself partially contributed to this. However, from an approach related to reading as a concept and at the same time recovering a certain material dimension of archaeology in relation to the work on the ground, new light could be shed on this inescapable piece of Western thought and on the reflection linked to the archive in general.

Por una historia profesional y cívicamente responsable: los primeros años de la Nueva Escuela Histórica; For a Professional and Civically Responsible History: The First Years of the New Historical School Galfione, Maria Carla La Nueva Escuela Histórica nucleó a un grupo de historiadores argentinos, desde la segunda década de siglo XX, que, de la mano de un amplio despliegue institucional e importantes proyectos de difusión, buscaban definir con precisión los márgenes de la disciplina. El artículo avanza en la exploración de las condiciones que se establecen para el saber histórico durante los primeros años de la Escuela, considera los supuestos historiográficos que se van asentando y los articula con las pretensiones de asignar a la disciplina un rol protagónico en la vida política de la nación. Allí, la cuestión de la nación cobra protagonismo y, con ella, la consideración específica de la temporalidad en juego, que reconfigura el marco conceptual básico para la comprensión de la historia. A la luz de esas reglas y condiciones, el artículo se detiene en particular en el relato de la historia colonial como una historia elaborada en y para un presente. Se reconoce cómo se ejercitan aquellas normas historiográficas y cómo, en sintonía con la posibilidad de pensar desde un nuevo marco temporal, el historiador se convierte en el agente autorizado para el modelado de la subjetividad requerida por la nación.; The “Nueva Escuela Historica” brought together a group of Argentine historians, from the second decade of the 20th century, who, with a wide institutional deployment and important diffusion projects, sought to define precisely the margins of the discipline. The article advances in the exploration of some of the conditions that are established for historical knowledge during the first years of these school, it considers the historiographic assumptions that are being established and articulates them with the pretensions of assigning a leading role to the discipline in the political life of the nation. In this articulation, the question of the nation became protagonist and, together with it, the possibility of recognizing there the deployment of a specific consideration of temporality, which reconfigures the conceptual framework, basis for the understanding of the history. In the light of these rules and conditions, the article focuses in particular on the account of colonial history as a history elaborated in and for a present. It is recognized how those historiographic norms are exercised there and how, in tune with the possibility of thinking from a new time frame, the historian becomes the authorized agent for the design of subjectivity required by the nation.