Selective lithium extraction employing lithium manganese oxide-loaded polymeric membranes at natural brine pH and room temperature Arrua, Eva Carolina; Bedogni, Giselle Rocio; Salomon, Claudio Javier; Flexer, Victoria The current technology for lithium extraction from brines is recognized both for its techno-economic disadvantages and its environmental impacts. We have synthesized, characterized, and evaluated particles based on lithium manganese oxide towards selective lithium recovery from complex media. A solid-state synthesis and a hydrothermal method produced sub-micrometre sized particles that showed diameters of 253 nm and 154 nm, respectively, both with very low polydispersity. 23.7 mgLi/gHMO and 30.7 mgLi/gHMO adsorption capacity values were obtained with solid-state synthetic and hydrothermal oxides. The hydrothermally synthesized submicrometre sized particles were incorporated into polymeric membranes aiming at the development of a straightforward technological application. Membranes were prepared from polyacrylonitrile and polyethyleneglycol, and the affinity to lithium was once again evaluated. Membranes showed a high adsorption capacity for lithium (32.7 mgLi/gHMO) with almost identical kinetics and cyclability as the free particles in solution. An excellent selectivity for lithium was confirmed in experiments with a natural lithium-rich brine from the Lithium Triangle. All adsorption experiments were performed at neutral pH and room temperature. An undeniable advantage of membranes vs. sub-micrometre sized particles is that the former do not require centrifugation after successful adsorption/desorption. These three characteristics are fundamental in the perspective of technology scale-up to minimize operational costs.

La vida afectiva en el arte independiente: Territorio sensible en la danza contemporánea del interior provinciano; Affective life in independent art: Sensitive territory in contemporary dance of the provincial interior Bertea, Francisco Miguel Fernando En este trabajo indagamos la vida afectiva en el arte independiente, específicamente en el mundo de la danza contemporánea del Valle de Paravachasca (Córdoba, Argentina), a partir de un trabajo etnográfico colaborativo de participación observante en el grupo Cantorodado, entre los años 2018-2022. Situados en los estudios sociales del arte y el giro afectivo, describimos de forma densa el territorio sensible de este mundo del arte, distinguiendo algunos de los vectores que lo componen, en calidad de tipos reales: una forma de (ganarse la) vida colectiva, una ética del cuidado y una atmósfera afectiva de entusiasmo. Empleamos para ello una propuesta analítica que se mueve en la tensión entre analítica-individuo y analítica-fuerza, entre las libertades relativas de los agentes y las estructuras estructurantes de sujeción. Realizamos así aportes a la comprensión de la vida afectiva de la danza contemporánea independiente y al arte independiente como forma de (ganarse la) vida, desde temáticas específicas, como la moral, la amistad, el management, el wellness y el don, reconociendo que la propuesta analítica empleada puede significar un aporte al estudio de la vida afectiva.; In this paper we investigate the affective life in independent art, specifically in the contemporary dance world of the Paravachasca Valley (Córdoba, Argentina), from a collaborative ethnographic work of observant participation in the Cantorodado group, between the years 2018-2022. Situated in the Social Studies of Art and the affective turn, we make a thick description of the sensitive territory of this art world, distinguishing some of the vectors that compose it, as real types: a way of (earning the) collective life, an ethic of care and an affective atmosphere of enthusiasm. We use an analytical proposal that moves in the tension between analytic-individual and analytic-force, between the relative freedoms of the agents and the structuring structures of subjection. We contribute at the understanding of the affective life of independent contemporary dance and independent art as a way of (earning a) living, from specific aspects linked: morality, friendship, management, wellness and gift. Acknowledging that the analytical proposal used can mean a contribution to the study of the affective life.

Use of cannabidiol-dominant extract as co-adjuvant therapy for type 2 diabetes mellitus treatment in feline: case report Massabo, José Ignacio; Puiatti, Gabriela; Ferrero, Paola Viviana Introduction: Diabetes mellitus (DM) is a common endocrinopathy in felines. Treatment is based on glycemic control and management of clinical signs by insulin administration coupled with a low-carbohydrate and high-protein content diet. However, achieving adequate remission or glycemia control is not always possible. Effects of cannabinoids on the regulation of glucose uptake and the incidence of diabetes have been observed in experimental models. Nevertheless, little is known about their possible relevance in controlling this condition in veterinary and human medicine. Case presentation: This is a case study of an 18-year-old, neutered, mixed-breed female domestic longhair cat diagnosed with type 2 diabetes mellitus. She was treated with long-acting glargine (3 to 5 IU/12 hs), and her diet changed to ultra-processed commercial food for diabetic cats. Three months after the start of the treatment with insulin, Cannabidiol (CBD)-enriched extract in handmade olive oil, THC: CBD ratio = 1:24, was incorporated. The route of administration was oromucosal. After three months, the glycemia was reduced. The patient decreased the polyuria/polydipsia, recovered sleep cycles, remained attentive to all movements, and increased her physical activity. Conclusion: This report provides evidence that using a CBD-rich extract was effective as a co-adjuvant in alleviating clinical signs of DM and concurrent disorders, allowing for the reduction of insulin intake.

Revisiting the massive star-forming complex RCW 122: New millimeter and submillimeter study Duronea, Nicolas Urbano; Bronfman, L.; Ortega, Martin Eduardo; Suad, Laura Andrea; Baume, Gustavo Luis; Mendoza, E.; Carvajal, M.; Cichowolski, Silvina; Arnal, Edmundo Marcelo; Finger, R.; Merello, M.; Gamen, Roberto Claudio In this paper, we present a new multifrequency study of the giant star-forming complex RCW 122. We used molecular data obtained with the ASTE 10 m and the APEX 12 m telescopes, along with infrared observations spanning from 3.6 µm to 870 µm, obtained from available databases. We also incorporated a range of public datasets, including the radio continuum at 3 GHz, narrowband Ha images, and deep JHK photometry. Our analysis focuses mostly on cataloged ATLASGAL sources, showcasing a spectrum of evolutionary stages from infrared dark cloud (IRDC)/high-mass protostellar object (HMPO) to ultra-compact HII region (UCHII), as inferred from preliminary inspections of the public dataset. Based on ASTE HCO+(4‑3) and CO(3‑2) data, we identified five molecular clumps, designated A, B, C, D, and E, as molecular counterparts of the ATLASGAL sources. These clumps have radial velocities ranging from ~‑15 km s‑1 to ‑10 km s‑1, confirming their association with RCW 122. In addition, we report the detection of 20 transitions from 11 distinct molecules in the APEX spectra in the frequency ranges from 258.38 GHz to 262.38 GHz, 228.538 GHz to 232.538 GHz, and 218.3 GHz to 222.3 GHz, unveiling a diverse chemical complexity among the clumps. Utilizing CO(2‑1) and C18O(2‑1) data taken from the observations with the APEX telescope, we estimated the total LTE molecular mass, ranging from 200 M⊙ (clump A) to 4400 M⊙ (clump B). Our mid- to far-infrared (MIR-FIR) flux density analysis yielded minimum dust temperatures of 23.7 K (clump A) to maximum temperatures of 33.9 K (clump B), indicating varying degrees of internal heating among the clumps. The bolometric luminosities span 1.7×103 L⊙ (clump A) to 2.4×105 L⊙ (clump B), while the total (dust+gas) mass ranges from 350 M⊙ (clump A) to 3800 M⊙ (clump B). Our analysis of the molecular line richness, L/M ratios, and CH3CCH and dust temperatures reveals an evolutionary sequence of A/E→C→D/B, consistent with preliminary inferences of the ATLASGAL sources. In this context, clumps A and E exhibit early stages of collapse, with clump A likely in an early HMPO phase, which is supported by identifying a candidate molecular outflow. Clump E appears to be in an intermediate stage between IRDC and HMPO. Clumps D and B show evidence of being in the UCHII phase, with clump B likely more advanced. Clump C likely represents an intermediate stage between HMPO and HMC. Our findings suggest clump B is undergoing ionization and heating by multiple stellar and protostellar members of the stellar cluster DBS 119. Meanwhile, other cluster members may be responsible for ionizing other regions of RCW 122 that have evolved into fully developed HII regions, beyond the molecular dissociation stage.

Flexible and configurable embedded electrical energy measurement system to acquire and process high-frequency features Véliz, Maximiliano Ezequiel; Real, Gustavo Ernesto; Otero, Alejandro Daniel A novel High-Frequency Electric Energy Metering System to inspect non-conventional features that may be relevant for studying real-time energy disaggregation and control of household appliances is presented. Integration of a data acquisition and control board, designed and built to be assembled with an Arduino Due, with the M90E36A Demo Board, allows for flexible and configurable electrical energy measurements. A key feature is that up to 4 current channels can be measured synchronously. On the one hand, samples can be obtained and processed by the M90E36A IC internal Digital Signal Processor at 3 Hz in the time domain and 2 Hz in the frequency domain. On the other hand, the M90E36A IC direct access memory mode can be operated, allowing 8 kHz pure voltage and current signals to be obtained. Finally, integration with Raspberry Pi allows to design and incorporate a custom signal processor into the study. Additionally, in this article, an application example is presented where the variation of the residual harmonic components of a household appliance is obtained.

Characterising cricket flour from Gryllus assimilis : an alternative source of nutrients for sustainability Toribio, Ezequiel; Correa, María Jimena; Medici, Sandra Karina; Ferrero, Cristina; Arp, Carlos Gabriel A trend to study entomological options as food is turning the practice of entomophagy into a novelresearch field in search for sustainable and accessible sources of nutrients. In this work, cricket (Gryllus assimilis) was processed into flour (CF), and then extracted using different solvents to obtain oils and defatted flours. The repeatability of CF obtention, its nutritional profile, and some of its physicochemical properties were studied. Results showed repeatability with a 28% mass yield for CF production. The CF presented adequate amino acid, mineral, and fatty acid profiles, a high content of dietary fibre, and low available carbohydrates, thus being considered a suitable alternative for inclusion in healthy human diets. Using data obtained from the total nitrogen content, the amino acid profile, and the total dietary fibre determinations, the CF protein digestibility was estimated at 67.4%. Based on experimental data, a mean nitrogen-to-protein conversion factor of 5.76 was calculated for a G. assimilis meal. The study showed that nutritional cricket flour and derivatives can be obtained using non-sophisticated methods.

A Decade of Monitoring Primary Healthcare Experiences through the Lens of Inequality Pasarín, M. Isabel; Rodríguez Sanz, Maica; Berra, Silvina del Valle; Borrell, Carme; Rocha, Kátia B. Background: Health care is not exempt from harboring social inequalities, including in those countries with a universal public system. The objective was to ascertain whether the population’s assessment of primary care (PC) changed between 2006 and 2016, the decade that included the economic crisis of 2008, and also if it exhibited patterns of social inequality in Barcelona (Spain). Methods: This was a cross-sectional study using Barcelona Health Surveys 2006 and 2016. Samples (4027 and 3082 respectively) comprised residents in Barcelona, over 15 years old. Dependent variable: Primary Care (PC) index. Independent variables: age, social class, and birthplace. Analyses included means and percentiles of PC index, and Somers’ D test to compare the distribution of the groups. Results: Comparing 2016 with 2006, the distribution of the PC index remained in women (median of 73.3) and improved in men (from 70 to 73.3). By social class, the pattern of inequality observed in 2006 in men with perceived poor health status disappeared in 2016. Inequalities according to birthplace persisted in women, regardless of perceived health status, but disappeared in men. Conclusions: In the 10 years between which the global economic crisis occurred, the assessment of PC did not worsen, and it did improve for men, but the study points to the need for more focus on people born abroad.

Planificar a partir del aprendizaje colaborativo en la formación inicial de profesores de Geografía; Planning from Collaborative Learning in the Initial Training of Geography Teachers Prieto, Maria Natalia; Volonté, Antonela; Maradona, Guillermina; Lorda, María Amalia El aprendizaje colaborativo es una estrategia activa que fomenta la participación directa de los estudiantes en la búsqueda de alternativas de solución a las contradic- ciones generadas en el proceso de aprendizaje; esta dinámica de trabajo favorece el aprendizaje significativo, las relaciones interpersonales (sociales), la comunicación, el aprendizaje autónomo, el desarrollo de habilidades de investigación y el fomento de valores humanos. La asignatura Didáctica y Práctica de la Geografía se dicta en el último año del profesorado en Geografía (Universidad Nacional del Sur, Argentina) y uno de los puntos centrales del proceso de enseñanza y aprendizaje es la forma- ción en la práctica docente reflexiva y supone una preparación fundamental antes del ingreso al ámbito escolar (práctica docente en la escuela secundaria). En esta instancia de preparación, se emplean diferentes dispositivos de formación, siendo uno de ellos el aprendizaje colaborativo. El objetivo de este trabajo es socializar una experiencia de organización de la enseñanza a partir del aprendizaje colaborativo. En ésta, los estudiantes del profesorado planifican propuestas de aula (en el contexto de una microclase) con un tema geográfico escolar. La experiencia, desde la consi- deración de los testimonios de los estudiantes, resultó innovadora ya que ayudó a fortalecer las habilidades sociales interactivas, la capacidad de autoevaluación, el pensamiento creativo, crítico, analítico y reflexivo. Asimismo, por implicar la gestión compartida de las decisiones didácticas, desde la dimensión cognitiva y socio-afectiva del aprendizaje, resultó una práctica valorada por su aporte al fortalecimiento del aprender a pensar “con el otro”.; Collaborative learning is an active strategy that encourages the direct participation of students in the search for alternative solutions to the contradictions generated in the learning process; This work dynamic favors meaningful learning, interpersonal (social) relationships, communication, autonomous learning, the development of research skills and the promotion of human values. The Didactics and Practice of Geography subject is taught in the last year of teaching in Geography (Universidad Nacional del Sur, Argentina) and one of the central points of the teaching and learning process is training in reflective teaching practice and involves preparation fundamental before entering the school environment (teaching practice in secondary school). In this instance of preparation, different training devices are used, one of them being collaborative learning. The aim of this paper is to socialize an experience of orga- nizing teaching based on collaborative learning. In this, the teaching students plan classroom proposals (in the context of a microclass) with a school geographic theme. The experience, from the consideration of the students’ testimonies, was innovative since it helped strengthen interactive social skills, the capacity for self-assessment, and creative, critical, analytical and reflective thinking. Likewise, because it involves the shared management of didactic decisions, from the cognitive and socio-affective dimension of learning, it was a practice valued for its contribution to strengthening learning to think “with the other.

Detrás del origen de arroz colorado en Argentina Presotto, Alejandro Daniel; Hernández, Fernando; Vercellino, Román Boris; Kruger, Raúl Daniel; Fontana, María Laura; Ureta, Maria Soledad; Crepy, Maria Andrea; Auge, Gabriela; Caicedo, Ana Las malezas agrícolas -que compiten fuertemente con los cultivos- son responsables de las mayores pérdidas de productividad de los cultivos (34%), seguidas por las algas y patógenos (con pérdidas del 18 y 16%, respectivamente) (Oerke, 2006).

“Picking up signals” in male genital morphospace and integrating phylogenomics to delimit Neotropical Nylanderia Emery species (Hymenoptera: Formicidae) Williams, Jason L.; Punnath, Aswaj; Fernández, María Belén; Calcaterra, Luis Alberto; LaPolla, John S.; Lucky, Andrea Genital morphology, a cornerstone in taxonomy that predates Linnaeus’s Systema Naturae, is vital for species delimitation. However, the widely accepted paradigm that genitalia are taxonomically informative lacks robust testing between closely related species, and supporting evidence is often limited to taxonomic literature in which genitalia are assumed a priori to be species-specific. The cosmopolitan ant genus Nylanderia Emery includes 123 described species, with most in the Neotropics still undescribed. Workers are often morphologically cryptic, and males are rare in collections but required for morphological delimitation. Using Ultraconserved Elements (UCEs) from 236 samples, including 53 Neotropical Nylanderia species, we reconstructed a phylogeneticframework to compare the genitalia (gonopods) of males collected alongside workers. We used geometric morphometrics on images of slide-mounted genitalia from 16 species and nano-CT scans of Nylanderia fulva (Mayr) and Nylanderia pubens (Forel) genital capsules and interpreted results considering phylogeny under maximum likelihood and the multispecies coalescent. We found strong morphological and molecular support for 2 distantly related American clades, identifiable by gonopod shape, with significant differences observed among most species. Three previously reported COI clades of N. fulva were not supported as monophyletic, nor were their gonopods significantly different. However, N. pubens was supported as distinct by allphylogenetic and 3DGM results. Our findings emphasize the importance of male genitalia for delimiting species boundaries and revising Neotropical Nylanderia. Given their importance, particularly in morphologically cryptic taxa, we recommend a greater focus on linking male and worker phenotypes, which can be facilitated through comprehensive nest series collection.

Psychometric Features of the Academic Resilience Scale-Short Version (ARS-SV): A Bifactor Exploratory Structural Equation Modeling Study Freiberg Hoffmann, Agustín; Romero Medina, Agustin; Vigh, Carlos Donato; Sánchez Rosas, Javier; Fernandez Liporace, Maria Mercedes Academic resilience is the ability to achieve successful results in academic challenges. Since it is an accurate predictor of academic achievement and retention in undergraduates, measuring it is essential.The study aimed at developing a short version of the Academic Resilience Scale (ARS) as well as testing the bifactor model, posed in prior research as an alternative to first-order structures. Items were altered to become linguistically suitable for the target population and examined in terms of content. An exploratory factor analysis (300 undergraduates) retained 12 out of the 30 items ?four per dimension? considering their content and metric features. Confirmatory factor analysis and exploratory structural equation modeling analysis tested and compared different models in 805 undergraduates. As a result, the bifactor ESEM model including three independent dimensions and a global dimension was selected due to its better fit. The short scale enables a valid, reliable and fast assessment of academic resilience in undergraduates.Keywords: Academic resilience, bifactor model, college students, coping skills, psychometric features, short version.

Gypsum form and rate can affect soil physicochemical properties and crop productivity in soils of low electrical conductivity that have been enriched by sodium due to supplementary irrigation Carciochi, Walter Daniel; Chevallier Boutell, Justo; García, Gisela Vanesa; Diovisalvi, Natalia Verónica; Wyngaard, Nicolás; Lapaz Olveira, Adrián Marcelo; Reussi Calvo, Nahuel Ignacio Context. The optimum gypsum form and rate required to ameliorate soil sodicity constraints caused by supplementary irrigation with water containing sodium bicarbonate in humid regions are unknown. Aim. Evaluate the short-term effect of different gypsum forms and rates on (i) soil physicochemical properties and (ii) grain yield in a barley (Hordeum vulgare L.)/maize (Zea mays L.) sequence. Methods. We conducted two field experiments in the southeastern Argentinean Pampas on soils with low electrical conductivity (0.2 dS m−1), assessing three forms of gypsum (granulated, pelletised, and powdered) applied a month before barley sowing at 2000 kg ha−1.In one experiment, 3000 kg ha−1 was also tested. Soil properties and grain yield were determined at barley and maize harvests (i.e. 7 and 13 months after the gypsum application, respectively). Key results. (i) Gypsum did not significantly affect soil physical properties; (ii) powdered gypsum at 3000 kg ha−1 enhanced soil chemical properties at barley harvest, decreasing pH by 7% and exchangeable sodium percentage by 35%, while increasing the exchangeable Ca2+/Na+ ratio by 70% (0.0–0.1 m depth); (iii) powdered gypsum improved soil chemical conditions at deeper soil depths (0.1–0.2 m) at maize harvest; (iv) barley grain yield increased with gypsum application; and (v) maize yield was negatively correlated with soil pH and positively correlated with the Ca2+/Na+ ratio. Conclusions. Powdered gypsum can rapidly improve soil chemical properties and increase crop yields. Implications. Powdered gypsum, especially at 3000 kg ha−1, could be used to alleviate soil sodicity issues in the short-term.

El enfoque de sistemas complejos: La interdisciplinaridad en el abordaje clínico del proceso salud-enfermedad/bienestar; The Complex Systems Approach: Interdisciplinarity in the Clinical Approach to the Health-Illness/Wellness Process Vicco, Miguel Hernán; Federico, Lucía; Giri, Leandro Ariel A lo largo de los años, la práctica sanitaria y los planes de estudios en medicina se han polarizado en dos facciones: el reduccionismo y el holismo, que se consideran opuestas y no vinculadas entre sí. Los partidarios de cada postura aún discuten cómo abordar a una persona que padece una enfermedad y la eficacia de su resolución.En este contexto, evaluamos la aplicabilidad del marco epistemológico de los Sistemas Complejos como un enfoque alternativo al reduccionismo biológico para analizar el proceso salud-enfermedad. Según dicho marco, al proceso salud-enfermedad/bienestar conviene modelarlo como un sistema complejo cuyos componentes no pueden ser seccionados y estudiados desde la perspectiva individual de cada subdisciplina interesada. Por el contrario, consta de un número considerable de variables que admiten múltiples dimensiones e interacciones entre ellas. Por tanto, su planteo debe ser necesariamente interdisciplinario, y los profesionales de la salud deben abordar el tema desde una perspectiva integradora, incluyendo el entorno social. Sesgar el enfoque holístico lleva a rechazar los aspectos subjetivos del individuo y de las propiedades de las relaciones entre los subsistemas que constituyen el sistema salud-enfermedad/bienestar.A diferencia de otras propuestas sistémicas de la literatura, el marco de sistemas complejosde Rolando García no se basa en la suma de conocimientos disciplinarios de los diferentes subsistemas sino en la integración de conceptos disciplinarios interdefinibles.La diferencia entre este enfoque y el multidisciplinario clásico es que la integración requiereque todos los miembros del equipo trabajen juntos en el modelado de la teoría para crear un lenguaje unificado para el sistema complejo, en lugar de trabajar desde una postura disciplinaria y luego sumar todos los puntos de vista.; Over the years, healthcare practice and curricula in medicine have polarised into two factions: reductionism and holism, which are seen as opposing and unconnected. Proponents of each position still argue about how to approach a person suffering from a disease and the efficacy of its resolution. In this context, we assessed the applicability of the Complex Systems epistemological framework as an alternative approach to biological reductionism in addressing the health-illness process. According to this framework, the health-illness/wellness process should be modelled as a complex system whose components cannot be sectioned and studied from the individual perspective of each sub-discipline concerned. On the contrary, it consists of a considerable number of variables with multiple dimensions and interactions between them. Therefore, its approach must necessarily be interdisciplinary, and health professionals must approach the subject from an integrative perspective, including the social environment. Biasing the holistic approach leads us to reject the analysis of the individual himself and the properties of the relationships between the subsystems that constitute the system. Unlike other systemic approaches in the literature, Rolando García’s Complex systems framework is not based on the sum of disciplinary knowledge from different sub-systems but on the integration of interdefinable disciplinary concepts. The difference between this approach and the classical multidisciplinary approach is that integration requires all team members to work together in modelling the theory to create a unified language for the complex system, rather than working from a disciplinary stance and then summing up all viewpoints.

Shaping multilateral regional governance of climate and forests: Exploring the influence of Forest industry lobbying on state participation Polo Villanueva, Fredy David; Schaub, Simon; Rivadeneira, Laura; Tosun, Jale; Giessen, Lukas; Burns, Sarah Lilian This study aims to characterise the institutional dynamics of Multilateral Regional Governance Arrangements at the Climate-Forest Interface (MRGA-CFI) and investigate the influence of the forest industry lobby groups on state participation in these arrangements. We use an original dataset to characterise the issue scope, spatial ambit, and governance functions of MRGA-CFI. State participation in these arrangements is modelled as a function of the strength of the forest industry lobby groups; measured as the proportion of forest that has been planted in a state, alongside various control variables. Our findings reveal that most MRGA-CFI focus on forests but are relevant for climate issues, have contiguous spatial ambit primarily in Asia and Africa, and focus on knowledge dissemination and capacity building. Quantitative analysis reveals a positive significant association between the strength of the forest industry lobby groups and state participation in MRGA-CFI. The analysis further suggests that states with stronger forest industry lobby groups are more likely to participate in non-centralised arrangements and those that focus on forest but not climate. Conversely, such states are also less likely to participate in governance arrangements that focus on both forest and climate issues. We conclude that while regional cooperation on climate and forests has been designed to capture funds from the climate regime and form negotiating coalitions, the forest industry lobbies governments to prevent such cooperation from overregulating their economic activities.

Protección legal del ambiente y la Agenda 2030 en la actualidad argentina; Environmental legal protection and 2030 Agenda in present Argentina Minaverry, Clara María; Caceres, Veronica Lucia El presente trabajo considera los cambios recientes que se introdujeron en la legislación ambiental de Argentina durante 2024, que tienen incidencia sobre los objetivos establecidos en la Agenda 2030 que se vinculan con la biodiversidad y el cambio climático y en el rol internacional que cumple el país. La investigación se basó en una metodología cualitativa que enfatiza la atención en la legislación ambiental nacional y en el contenido de dos normas claves sancionadas durante 2024: el Decreto de Necesidad y Urgencia Nº 70/2023 y la Ley Nº 27.742 de Bases y Puntos de Partida para la Libertad de los Argentinos. Además, se relevaron y analizaron los objetivos de la Agenda 2030 y una selección de informes elaborados en el ámbito de dos organismos internacionales sectoriales especializados la protección de la biodiversidad y la lucha contra el cambio climático: IPBES e IPCC. Se concluye que las actuales modificaciones en la regulación son regresivas en materia ambiental, inciden negativamente en la biodiversidad y en la lucha contra el cambio climático, impactan en los compromisos que asumió el país en la Agenda 2030 y es contrario a las tendencias promovidas por los organismos internacionales de los cuales el país es parte.; This paper considers the recent changes which were introduced in the environmental legislation of Argentina during 2024, which have an impact on the 2030 Agenda Goals which are related to biodiversity and climate change and with the international role of the country. This research was based on a qualitative methodology which focus on national environmental legislation and on the content of two key regulations sanctioned during 2024: the Decree of Necessity and Urgency No. 70/2023 and Law 27,742 named Bases and Starting Points for the Freedom of Argentines. In addition, 2030 Agenda goals and a selection of reports prepared within the scope of two sectoral international organizations specialized in biodiversity and climate change were surveyed and analyzed: IPBES and IPCC. It is concluded that the current modifications in the regulation are regressive in connection with the environmental area, have a negative impact on biodiversity and in relation with the fight against climate change, it impacts the commitments made by the country in the 2030 Agenda and are contrary to the trends promoted by the international organizations of which the country is a part.

Entre el archivo y el archivista: Reconstrucción y gestión del archivo sonoro de Carlos Vega; Between the archive and the archivist: Reconstruction and management of the sound archive of Carlos Vega Adduci Spina, Elina El archivo sonoro fundacional del Instituto Nacional de Musicología Carlos Vega (INM) fue generado por Carlos Vega como un objeto de estudio para examinar y clasificar las músicas populares de Argentina y Latinoamérica. Las investigaciones musicológicas de Vega se han convertido en un objeto de análisis en sí mismo. Sin embargo, ni Vega ni sus sucesores han puesto especial atención en la reflexión de la praxis de producción y clasificación documental. El presente artículo indaga la política documental desarrollada por Carlos Vega con el propósito de proponer una metodología posible para la gestión de su acervo. En primer lugar, se estudian los modos de creación, catalogación y selección iniciados por Vega y continuados por el instituto. En segundo lugar, se expone una serie de estrategias adoptadas en pos del abordaje integral y procesual del archivo sonoro institucional del INM.; The foundational sound archive of the Instituto Nacional de Musicología «Carlos Vega» (INM) was generated by Carlos Vega as an object of study to examine and classify the popular music of Argentina and Latin America. In turn, Vega’s musicological research has become an object of analysis in itself. However, neither Vega nor his successors have paid special attention to the reflection of the praxis of documentary production and classification. Therefore, this article investigates the documentary policy developed by Carlos Vega in order to propose a possible methodology for the management of his collection. First of all, the modes of creation, cataloguing and selection initiated by Vega and continued by the institute are studied. Secondly, a series of strategies adopted in pursuit of the integral and procedural approach of the institutional sound archive of the INM is exposed.

Photometric and numerical study of comet C/2021 A1 (Leonard) near its estimated disruption date Garcia, R. S.; Fernandez Lajus, Eduardo Eusebio; Di Sisto, Romina Paula; Gil Hutton, Ricardo Alfredo Initially on an elliptical orbit, C/2021 A1 experimented significant changes in its orbital configuration due to planetary perturbations upon entering the planetary region. Images of the comet C/2021 A1 (Leonard) obtained in March 2022 allow to estimate that its disintegration occurred in December 2021. The aim of this paper is to analyze the comet’s dust behavior during the period when its disintegration is presumed to have commenced, so a series of images of this comet on the broadband B, V, and R filters were taken on December 21 and 23, 2021 with the 0.6 m Helen Sawyer Hogg (HSH) telescope at the Complejo Astron´omico El Leoncito (CASLEO) to do a morphological, photometric, and numerical analysis of this comet. Analysis of the magnitudes and dust production rate suggests a significant increase in activity on December 21 compared to two days later, indicating a potential outburst. Digital filters were applied to enhance contrast in the cometary images, revealing two active regions on opposite sides of the nucleus. Additionally, the A(0◦) f ρ parameter was obtained for this comet. Finally, to gain deeper insights into Leonard’s dust behavior,observations were fitted to a newly developed theoretical model for studying dust comas. Combined with photometric data and gas production information from the literature, the analysis suggests that the comet’s activity on December 21, 2021, may mark the beginning of its disintegration.

Chronic NOD2 stimulation by MDP confers protection against parthanatos through M2b macrophage polarization in RAW264.7 cells Mansilla, Florencia Celeste; Miraglia, Maria Cruz; Maidana, Silvina Soledad; Randazzo, Cecilia Paola; Capozzo, Alejandra Victoria Innate immune cells show enhanced responsiveness to secondary challenges after an initial non-related stimulation (Trained Innate Immunity, TII). Acute NOD2 activation by Muramyl-Dipeptide (MDP) promotes TII inducing the secretion of pro-inflammatory mediators, while a sustained MDP-stimulation down-regulates the inflammatory response, restoring tolerance. Here we characterized in-vitro the response of murine macrophages to lipopolysaccharide (LPS) challenge under NOD2-chronic stimulation. RAW264.7 cells were trained with MDP (1 μg/ml, 48 h) and challenged with LPS (5 μg/ml, 24 h). Trained cells formed multinucleated giant cells with increased phagocytosis rates compared to untrained/challenged cells. They showed a reduced mitochondrial activity and a switch to aerobic glycolysis. TNF-α, ROS and NO were upregulated in both trained and untrained cultures (MDP+, MDP- cells, p > 0.05); while IL-10, IL-6 IL-12 and MHCII were upregulated only in trained cells after LPS challenge (MDP + LPS+, p < 0.05). A slight upregulation in the expression of B7.2 was also observed in this group, although differences were not statistically significant. MDP-training induced resistance to LPS challenge (p < 0.01). The relative expression of PARP-1 was downregulated after the LPS challenge, which may contribute to the regulatory milieu and to the innate memory mechanisms exhibited by MDP-trained cells. Our results demonstrate that a sustained MDP-training polarizes murine macrophages towards a M2b profile, inhibiting parthanatos. These results may impact on the development of strategies to immunomodulate processes in which inflammation should be controlled.

La influencia heideggeriana en la perspectiva comunitaria contemporánea de Byung-Chul Han; The Heideggerian Influence on Byung-Chul Han’s Contemporary Community Perspective; A influência heideggeriana na perspectiva da comunidade contemporânea de Byung Chul Han Butierrez, Luis Fernando En este artículo estudio la influencia del pensamiento de Heidegger en el marco de las consideraciones de los lazos sociales y comunitarios de Byung-Chul Han, y sus respectivos enfoques críticos respecto de la tradición metafísica de la subjetividad. Mediante el análisis de cómo Han articula sus interpretaciones críticas de la analítica de Sein und Zeit, en el marco de sus propios planteamientos sociopolíticos contemporáneos, busco distinguir continuidades y diferencias entre ambas perspectivas. De esta manera me propongo poner en evidencia ambas comprensiones del existente humano articuladas en torno a los lazos sociales, para dar cuenta de sus alcances respectivos.; In the following paper we will distinguish the influence of Heidegger’s thought within the framework of Byung-Chul Han’s considerations of social and communal bonds, and their respective critical approaches to the metaphysical tradition of subjectivity. Analyzing the way Han articulates his critical interpretations of Sein und Zeit’s analytic within the framework of his own contemporary sociopolitical analyses, we will seek to distinguish continuities and differences between the two perspectives. In this way we intend to highlight both understandings of the human existent articulated around social ties, to account for their respective scopes.; No trabalho a seguir, distinguiremos a influência do pensamento de Heidegger nas elaborações de Byung Chul Han no quadro de suas considerações sobre os laços sociais e comunitários e de suas respectivas abordagens críticas à tradição metafísica da subjetividade. Partindo da análise da forma como Han articula suas interpretações críticas da analítica de Sein und Zeit, no quadro de suas próprias análises político-sociais contemporâneas, buscaremos distinguir continuidades e diferenças entre as duas perspectivas. Dessa forma, propomos destacar ambas as compreensões do ser humano existente articulado em torno dos laços sociais, para dar conta de seus respectivos alcances.

Detección de sombras mediante índice invariante de color Captura de imágenes aéreas con dron para el posterior procesamiento, mediante un algoritmo de detección automática de sombras sobre dosel, identificación de potenciales ejemplares de capa emergente.