Experimental study of parchment coffee drying using the combined fluidization and microwave process: Analysis of drying curves and thermal imaging Reyes Chaparro, Jose Eduardo; Arballo, Javier Ramiro; Campañone, Laura Analia In this study, several experimental drying conditions for parchment coffee were investigated using microwave-assisted fluidization. The experiments were carried out in a prototype equipment consisting of a multimode microwave equipment (700 W and 2.45 GHz frequency) with a drying chamber inside of the cavity. Fluidization is provided by a centrifugal blower (1500 rpm nominal) operating at different controlled speeds. The experimental design corresponds to three microwave power levels (0, 210 and 350 W) and different air speeds (0, 1.7 and 3.4 m/s) at 25 and 40 ºC. The experimental moisture evolution and temperature distribution showed that fluidization homogenizes the temperature profiles. Thermographic images further indicated that intermediate microwave power levels (210 W) achieved high uniformity in surface temperature distribution. The combination of fluidization and microwaves facilitated a significant acceleration of the drying rate without exceeding temperature limits, thus preventing any adverse effects on the final product´s quality.

Adolescents’ sleep quality is associated with day of the week, school timing and chronotype Rodriguez Ferrante, Guadalupe; Goldin, Andrea Paula; Leone, María Juliana Late chronotypes and early school start times are associated with unhealthy sleep habits during adolescence. Here we examine the impact of the relationship between school timing and chronotype on sleep quality in 349 Argentinian high-school students (age: 17-18 y.o., 49% females) randomly assigned to attend school in the morning, afternoon or evening. Students completed the Munich Chronotype Questionnaire and ranked their sleep quality using a Likert-like scale. We found higher sleep quality on free days than on weekdays. Importantly, morning-attending students showed lower sleep quality on weekdays. Finally, the interaction between school timing and chronotype was associated with sleep quality on weekdays: later chronotypes were associated with poorer sleep quality in morning- and afternoon-attending students, but not in the evening. Altogether, our results suggest that attending school in the morning is associated with shorter sleep duration and higher social jetlag, but also with lower sleep quality during adolescence.

Registros de Poospiza nigrorufa y Poospiza whitii en Argentina Conjunto de registros del Sietevestidos Pampeano (Poospiza nigrorufa) y del Sietevestidos Serrano (Poospiza whitii), que incluye fecha, localidad, coordenadas geográficas y fuente de información. Estos datos fueron usados para generar los modelos de distribución potencial en el marco de un estudio de los limites de especie de estos dos taxones.

Cuestionario de evaluacion del estado emocional inducido mediante música La música tiene la capacidad de inducir diferentes estados emocionales en las personas (Juslin & Västfjäll, 2008). Esto ha promovido la implementación de intervenciones basadas en música en investigaciones acerca de los procesos emocionales y de su impacto sobre otros dominios cognitivos como la memoria (Diaz Abrahan et al., 2021; López et al., 2021; López, Yunes et al., 2024), el estrés académico (Gelerstein et al., 2024), la percepción del dolor (Asku, 2023), la calidad del sueño (Jespersen et al., 2023), entre otros. Para evaluar los estados emocionales inducidos por música se utilizan diferentes herramientas que cuantifican en qué medida la persona experimentó emociones predeterminadas durante la escucha (Zetner et al., 2008). Con el objetivo de considerar diferentes aspectos involucrados en las intervenciones basadas en música, se confeccionó un cuestionario que incluye herramientas validadas, así como también preguntas ad hoc que surgen de la práctica en investigación. El cuestionario evalúa estados emocionales subjetivos inducidos mediante intervenciones basadas en música, considerando diferentes aspectos que componen las experiencias emocionales subjetivas (López, Picco et al., 2024; López, Yunes et al., 2024). Se utiliza una escala basada en el esquema pictórico Self-Assessment Manikin (Bradley & Lang, 1994) para evaluar dos dimensiones emocionales provocado por la música: valencia (gradiente que se extiende entre la máxima tristeza y la máxima felicidad) y el arousal/nivel de activación (gradiente que abarca desde la máxima relajación a la máxima excitación). Teniendo en cuenta que la música es un fenómeno dinámico que se desarrolla en el tiempo, se evalúa la frecuencia con la que se experimentaron tales estados durante la experiencia de escucha. Además, se incluyen preguntas ad hoc de respuestas cerradas y abiertas orientadas a medir el gusto por la pieza musical, la familiaridad de la persona con la música, la inducción de otras emociones, la autopercepción de movimiento, la percepción del paso del tiempo, el estado de comodidad y la evocación de recuerdos autobiográficos durante la escucha.

Temperaturas corporales y ambientales para Telmatobius rubigo Se presentan tres conjuntos de datos: 1) Datos de temperaturas del agua y del aire del habitat de Telmatobius rubigo colectados durante los meses mas cálidos del año utilizando registradores automáticos de temperatura ambiental. 2) Datos de temperaturas corporales de Telmatobius rubigo colectados en sucesivos muestreos en la Puna jujeña. 3) Valores de temperatura crítica máxima para la especie. Estos datos se utilizaron para estimar la vulnerabilidad al calentamiento global de Telmatobius rubigo.

Effect of grasses on native tree seedling establishment along a water stress gradient: results of forest and greenhouse experiments Trinco, Fabio Daniel; Rusch, Verónica Elena; Cardozo, Andrea Gabriela; Garibaldi, Lucas Alejandro; Tittonell, Pablo Adrián Because of anthropogenic uses, such as cattle raising or forest clearings, some native forests show 17 an early successional grass stratum that can reduce or nullify native tree regeneration. We 18 hypothesize that increasing grass coverage lowers or nullifies native seedling establishment by 19 reducing or preventing water intake by the seed or seedling. The aim of this work is to assess the 20 effect of grasses over tree seedlings under varying soil water stress levels. We performed a field 21 experiment consisted of 36 experimental exclosures in two northwest Patagonian valleys, covering 22the regional gradient of altitude, rainfall, and tree canopy openness. We also conducted a 23 greenhouse experiment, consisted of 36 experimental pots with four levels of grass coverages, 24 under three levels of water stress. Correspondence has been observed between both experiments. 25 In the field experiment we found that the probability of finding an alive tree seedling is about 2.78 26 times higher in ungrassed sites compared to grassed ones. In the greenhouse experiment we found 27 that the presence of grasses reduced on average 43% the final number of established seedlings 28 over all irrigation levels, suggesting that a water competition process is occurring. Management 29 practices that induce the invasion of grass layer would negatively impact on tree regeneration in 30 forests that have not co-evolved with large herbivores. This situation can be exacerbated in regions 31 that show a water limitation in the growing season or where climate change can intensify water 32 stress conditions.

Delineating genomic features for wild guanaco conservation Leggieri, Leonardo Ramón; Anello, Melina; Peralta, Diego Matias; Tunez, Juan Ignacio; Di Rocco, Florencia; Poljak, Sebastián; Flores, Celina Eliana; Alunni, Daniela Verónica; Belardi, Juan Bautista; Gutierrez, Maria Amelia; Alvarez, María Clara; Massigoge, Agustina; Kaufmann, Cristian Ariel; Borrero, Luis Alberto; Borghi, Carlos Eduardo; Demartini, Julieta Paola; Petracci, Pablo; Martín, Sotelo; Marbán, Leandro Martín; Kathiravan, Periasamy; Rudolf, Pichler; Valdez Marín, Juan Carlos; Cárcamo, Juan Guillermo; Carmanchahi, Pablo Daniel The South American fauna has endured challenges such as illegal hunting, cattle expansion, climate change, and landscape fragmentation. Despite ongoing conservation efforts that aim to address these issues, genetic diversity remains overlooked. We genotyped 126 Lama guanicoe individuals from an area of 2 million km2 in Patagonia and Cuyo using the 60K SNPs Axiom-Camelids, and we assessed population viability through genetic diversity, inbreeding, and population size. We then explored population connectivities through network analyses, genetic differentiation, and Bayesian approaches. Our findings reveal six genetic clusters: Cuyo, Somuncura, North Patagonia, Central Patagonia, South Patagonia, and Tierra del Fuego Island (TDFI). Cuyo and TDFI guanacos differed from others due to isolation-by-distance and geographical barriers, respectively. Cuyo exhibited the highest degree of allele conservation, but TDFI faced heightened vulnerability due to isolation and increased homozygosity. Sharp bottlenecks in Cuyo and North Patagonia coincided with the expansion of sheep farming, while bottlenecks in the other populations occurred during the Little Ice Age. North Patagonia acted as a probable contact zone, facilitating mixing of the Cuyo, Somuncura, and Central Patagonia populations. The Central and South Patagonian populations presented the highest gene flow. Thus, genomic advances help to define distinct conservation units (genetic stocks) to guide management practices and decisions.

Assembling the Brazilian flora: overview of Leguminosae diversity Morim, Marli Pires; Filardi, Fabiana Luiza Ranzato; Sartori, Ângela Lúcia Bagnatori; Simon, Marcelo Fragomeni Simon; Iganci, João Ricardo Vieira; Lewis, Gwilym P.; de Lima, Haroldo Cavalcante; Lughadha, Eimear Nic; Fernandes, Moabe Ferreira; de Queiroz, Luciano Paganucci; Cardoso, Domingos; Morales, Matias Over the last two centuries, since the treatment of Leguminosae in Flora Brasiliensis, many new legume species and genera have been described, adding to the accumulated body of knowledge on species’ circumscriptions and distribution, published in monographs, taxonomic revisions and regional floristic treatments of specific Brazilian phytogeographic domains. The Flora do Brasil 2020 project was a collaborative effort conducted between 2008 and 2020 to meet the targets set by the Global Strategy for Plant Conservation, an initiative of the Convention on Biological Diversity. The project aimed to inventory and revise the taxonomy of all plant species in Brazil, including Leguminosae. The monograph of the legume family was carried out by a team of 102 taxonomists (10% of the project’s total), who worked towards updating and verifying the taxonomy of these plants in an online platform. Information on the life forms, substrate, endemism level, and geographical distribution for all accepted taxa were provided, alongside morphological descriptions, identification keys, images of herbarium specimens and field photographs. In this work, we have extracted from the Flora do Brasil 2020 project the legume data consolidated on December 31st, 2020 to provide an overview of the species diversity of Leguminosae in Brazil and its distribution across phytogeographic domains. The results revealed that the family is represented by 220 genera, of which 19 are endemic, and a total of 2901 species (1576 endemic). After fully monographing 210 genera (95%), we showcased Leguminosae as the most diverse family in the country, representing 6% of the total vascular plant species documented in the Flora do Brasil 2020. The species are found in all phytogeographic domains, exhibiting a wide range of life forms. The Mata Atlântica and Caatinga domains together contain the largest number of endemic legume genera in Brazil, most of them monospecific.A discussion on the conservation status of the Brazilian legume species is also provided. Knowledge of the Brazilian flora is continuously advancing, particularly with regards to Leguminosae, demanding regular taxonomic and nomenclatural updates.Current collaborations have greatly improved our understanding of legume diversity and distribution, providing evidence to inform conservation prioritization and action for the Leguminosae in Brazil’s megadiverse flora.

Cuidados alimentarios de niños, niñas y adolescentes de familias usuarias de un comedor popular del asentamiento urbano La Carbonilla Comelatto, Agustina; Gonzalez, Yamila Anahi; Grabowiecki, Paula Valeria; Marsilla, Malena; Mancinelli, Gloria En los últimos años, el concepto de cuidado infantil ha ido variando y surge como relevante en un contexto donde el cuidado empieza a pensarse como una actividad que requiere ser problematizada, dando lugar a un enriquecedor campo de discusión. El presente trabajo de investigación busca analizar y comprender la articulación entre los diferentes actores, instituciones y el cuidado alimentario de niños, niñas y adolescentes (NNyA) de familias que asisten al comedor popular “Polo Obrero La Carbonilla” situado en dicho barrio, considerando la influencia de factores socioculturales y económicos en la formación de sus hábitos alimentarios. Para llevar adelante el estudio elegimos un enfoque cualitativo, y para la recolección de datos utilizamos fuentes primarias como la observación participante, entrevistas en profundidad y encuestas, y también fuentes secundarias como páginas web e informes de centros de investigación, que permitieron complementar los datos recogidos en terreno. La investigación nos permitió desentrañar el concepto de cuidado de NNyA, un proceso sociocultural, el cual consideramos como una vía de acceso para explorar conceptos de construcción de la niñez en diferentes situaciones y contextos. Además, observamos que el rol de los comedores populares es fundamental no sólo para asegurar el derecho de NNyA a no padecer hambre, sino también como un espacio donde se resalta la relevancia del cuidado como una acción social, colectiva e interdisciplinaria.; In recent years, the concept of childcare has been changing and emerges as relevant in a context where care is beginning to be thought of as an activity that requires to be problematized, giving rise to an enriching field of discussion. The present research work seeks to analyze and understand the articulation between the different actors, institutions and the nutritional care of children and adolescents (C&A) from families that attend the “Polo Obrero La Carbonilla” soup kitchens located in said neighborhood, considering the influence of sociocultural and economic factors in the formation of their eating habits. To carry out the study, we chose a qualitative approach and for data collection we used both primary sources such as participant observation, in-depth interviews and surveys, as well as secondary sources such as websites and reports from research centers, which allowed us to complement the data collected on the ground. The research allowed us to unravel the concept of child care, a sociocultural process, which we consider as an access route to explore concepts of childhood construction in different situations and contexts. Furthermore, we observed that the role of soup kitchens is fundamental not only to ensure the right of children and adolescents to not suffer from hunger, but also as a space where the relevance of care as a social, collective and interdisciplinary action is highlighted.

Advancing the design of heterogeneous catalyst: Copper-montmorillonite for regioselective alkyne hydroamination Alonso, María Belén; Radivoy, Gabriel Eduardo; Mancebo Aracil, Juan Transition metal catalysts supported on natural materials offer promising avenues for sustainable organic synthesis. In this study, we present the synthesis, characterisation, and catalytic performance of copper nanoparticles supported on montmorillonite K10 (CuMK10) as a heterogeneous catalyst for hydroamination reactions. CuMK10, synthesised through a robust and established nanoparticle synthesis methodology, demonstrates remarkable catalytic efficiency and selectivity in the synthesis of imines via hydroamination of terminal alkynes. The catalyst exhibits exceptional regioselectivity, predominantly yielding Markovnikov products, demonstrating its potential as a versatile tool in organic synthesis. Moreover, CuMK10 shows favourable reusability, offering economic benefits and practical utility due to its ease of recovery and reuse. Comprehensive structural and mechanistic studies provide insights into the catalyst's performance, paving the way for the development of efficient and environmentally benign catalytic systems.

Tunneling Current Calculation Using the Linear-Bound Potential Model Ferreyra, Jorge Mario; Bridoux, German; Villegas Andina, Atuel Elías; Tolosa, Martín Rodrigo; Villafuerte, Manuel Jose A model of the tunneling current through an ultrathin insulating barrier comingfrom carriers in an inversion layer using a simple linear potential model ispresented. This model provides analytical expressions for the wavefunctions ofthese carriers and simple equations to obtain numerically their correspondingeigenvalues. These expressions can be inserted in the tunneling current equationallowing a more simple understanding of the physics involved in this tunnelingproblem. As an example, one can fit the experimental results for the leakagecurrent obtained by different authors in planar metal oxide semiconductor fieldeffect transistors and also in a LaAlO3/SrTiO3 and a HfO2/Ge bilayer. Themodification of the tunneling current when the dielectric constant is increased,a subject of interest in device applications, is explored.

Geografía física en clave de desempeño académico: El caso de las carreras de turismo de la Universidad Nacional de Tierra del Fuego; Physical Geography in code of academic performance: The case of Tourism courses at the National University of Tierra del Fuego Schwartz, Soledad; Villarreal, María Laura; Alli, Pamela Daniela El rendimiento estudiantil o desempeño académico constituye una variable útil para pensar en la calidad de la educación superior. No obstante, existen diversas acepciones en torno a su medición. En este marco, el presente artículo tiene como objetivo conocer las características de dicho desempeño en términos del cursado de la asignatura Geografía Física del primer año de las carreras Tecnicatura y Licenciatura en Turismo de la Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Para ello, y bajo un enfoque cuantitativo de alcance exploratorio, se consideró a los estudiantes inscriptos en la materia durante los años 2018 a 2023 y el concepto obtenido en base a la normativa de la universidad, así como la inscripción a mesa de examen final hasta agosto de 2024. A través de las actas de inscripción, de regularidad y de examen, se construyó una matriz de doble entrada incluyendo a un universo de 911 estudiantes. El análisis revela que el 17% pierde la cursada por no cumplimentar requisitos de admisión en tiempo y forma, que la tasa de abandono temprano ronda el 27%, que el 36% queda libre por diversos motivos y que la tasa de regularidad alcanza el 19%. Asimismo, se observa que solo el 12,37% de los estudiantes logró acreditar la asignatura mediante la aprobación del examen final, varios de ellos luego de haber cursado la asignatura en más de una oportunidad. Estos primeros resultados en relación a la problemática del desempeño académico abren interrogantes para profundizar en variables cualitativas que permitan comprender los motivos de deserción y las estrategias de éxito de los estudiantes para delinear así acciones institucionales que aumenten la permanencia y el posterior egreso.; Student academic performance is a useful variable to think about the quality of higher education. However, there are different ways to measure it. In this sense, the present article aims to explore the characteristics of such performance in the subject Physical Geography of the first year of the degree in Tourism at the national university of Tierra del Fuego, Antártida e Islas del Atlántico Sur. For this purpose, and under a quantitative approach, the students enrolled in the subject during the years 2018 to 2023 were considered and the concept obtained based on the university regulations, as well as the registration to the final exam until August 2024. Through these records, a double-entry matrix was designed including a universe of 911 students. The analysis reveals that 17% do not fulfill admission requirements in time, that the early dropout rate is around 27%, that 36% fail for various reasons, and that the regularity rate reaches 19%. Likewise, it is observed that only 12.37% of the students manage to pass the final exam, many of them after having taken the course on more than one occasion. These first results in relation to the problem of academic performance raise questions that invite us to deepen the analysis taking into account qualitative variables to understand the reasons for dropout and the success strategies of students in order to outline institutional actions that increase permanence and the subsequent graduation.

Poderes públicos, territorio, población. La democracia en la teoría del Estado Nosetto, Luciano Ezequiel “¿Podemos reflexionar sobre el Estado desde una teoría del Estado? ¿Desde una teoría que no tenga por centro a la democracia, sino que ponga lo democrático a jugar en el interior de un conjunto más vasto, de fenómenos sociológicos y jurídicos, que involucran el territorio, la población y los poderes?”, se pregunta Luciano Nosetto en este texto que se vale de autores como como Georg Jellinek, Max Weber y Carl Schmitt para acercar conceptos con los que comprender los dilemas y las posibilidades a las que abre la situación de nuestro tiempo. Situación dramática “que hizo posible que el procedimiento jurídico de formación de la voluntad gubernamental diera lugar al nihilismo activo, esto es, al encumbramiento de la voluntad de destrucción como voluntad rectora del Estado”.

Changes in least limiting water range under different tillage systems and traffic intensities in a subhumid pampean region Vallejos, Adrián Gustavo; Iglesias, Julio Osvaldo; Galantini, Juan Alberto; Imhoff, Silvia del Carmen Soil management practices can disrupt soil structure, affecting productivity through changes in water and oxygen availability, and mechanical impedance. These variables can be affected by machinery traffic depending on the management practice used. This research aimed to quantify changes in the least limiting water range (LLWR) in the surface soil layer under varying traffic intensities in both no-till (NT) and conventional tillage (CT) systems. The treatments applied to each system were: control without any traffic (0P), one tractor pass (1P), and five tractor passes (5P). To determine the LLWR and available water (AW), the following variables were measured: soil bulk density (BD), soil water retention curve (SWRC) and soil penetration resistance (SRP). Transit treatments gave different LLWR results depending on tillage system. The changes in AW were less sensitive than the LLWR values. The only treatment that did not reach the critical bulk density (BDc), where the LLWR is zero, was the 0P treatment. Both the NT and CT 1P treatments reached the same BDc of 1.39 m³ m- ³. However, in the 5P treatment, the BDc was 1.33 m³ m- ³ for CT and 1.41 m³ m- ³ for NT, respectively. The LLWR showed a different response of its structural condition to the tillage system and traffic intensity in both tillage systems. These results provide evidence of a greater risk of soil degradation under CT than under NT management. Regardless of soil management and machinery traffic treatments, soil penetration resistance was the attribute that had more influence on the LLWR.

A simple and fast method to calculate the coil currents and the external poloidal flux and magnetic field for fixed boundary equilibria Farengo, Ricardo; Garcia Martinez, Pablo Luis; Ferrari, Hugo Emilio A simple and fast method to calculate the coil currents and the external poloidal flux and magnetic field consistent with a given internal magnetohydrodynamic (MHD) equilibrium and coil geometry is presented. The constrained optimization technique employed allows to fix the exact position of the X-points. The external poloidal flux and field are calculated using Green´s functions expressed in terms of elliptic integrals that are calculated using a fast and accurate routine. The calculation can be limited to the region between the plasma and the device wall. An example for a double null configuration is presented.

Una propuesta de teoría sociológica: Los poderes reclasificatorios; Uma proposta de teoria sociológica: Poderes reclassificatórios; A proposal for sociological theory: Reclassificatory powers Bialakowsky, Alejandro Marcos Este artículo presenta una propuesta de teoría sociológica a partir de los poderes reclasificatorios. Hoy se despliegan constantes disputas sobre los modos de dividir, calificar y jerarquizar el mundo social y natural. Son las maneras de reclasificar con sus alcances prácticos –colectivos y personales–, como desigualdades, discriminaciones, regulaciones, innovaciones, etc. Tales disputas van desde recategorizaciones de “género”, “clase” y “étnico-raciales” hasta “jurídicas”, “económicas”, “religiosas” o “técnicas” vía algoritmos. Así, resulta fundamental elaborar una perspectiva teórico-analítica en sociología que dé cuenta de esas controversias. Ésta requiere una mirada de conjunto, abstracta e incisiva, evitando fragmentaciones teóricas del Sur y del Norte. Para ello, se realizan unas primeras definiciones del concepto de “poderes reclasificatorios”. Luego se enfoca en sus divisiones y capacidades para abordar las relaciones entre poder y dominación, en particular, con algunos ejemplos de la sociología argentina. Por último, se mencionan ciertos elementos de continuidad de la propuesta.; Este artigo oferece uma proposta de teoria sociológica baseada nos poderes reclassificatórios. Hoje há contínuas disputas sobre as formas de dividir, classificar e hierarquizar o mundo social e natural. São os modos de reclassificação com as suas implicações práticas ‒coletivas e pessoais‒ como as desigualdades, as discriminações, as regulamentações, as inovações, etc. Essas disputas vão do recategorizações de “género”, da “classe” e da “raça-etnia” às “jurídicas”, “económicas”, “religiosas” ou “técnicas” através de algoritmos. Assim, é fundamental produzir uma perspectiva teórico-analítica na sociologia que dê conta destas controvérsias. Isto requer uma perspective geral, abstrata e incisiva, evitando fragmentações teóricas do Sul e do Norte. Para isso, é apresentada uma primeira definição do conceito de “poderes reclassificatórios”. Depois, concentra-se em suas divisões e capacidades para abordar as relações entre poder e dominação, em particular com alguns exemplos da sociologia argentina. Finalmente, são mencionados alguns elementos de continuidade da proposta.; This article presents a proposal for a sociological theory based on reclassificatory powers. Today continuous disputes are unfolding over ways of dividing, qualifying, and hierarchizing the social and natural world. These are the forms of reclassifying with their practical implications—collective and personal—such as inequalities, discriminations, regulations, innovations, etc. Those disputes range from "gender," "class," and "racial-ethnic" recategorizations to "legal," "economic," "religious," or "technical" ones, via algorithms. Thus, it is key to elaborate a theoretical-analytical perspective in sociology that accounts for these controversies. This requires an overall, abstract, and incisive perspective, avoiding theoretical fragmentations of the South and the North. So, a first definition of the concept of "reclassificatory powers" is given. Then, the article focuses on its divisions and capacities to address the relations between power and domination, particularly with some examples from Argentinean sociology. Finally, certain elements of continuity of the proposal are mentioned.

Scatter Search Algorithm for a Waste Collection Problem in an Argentine Case Study Rossit, Diego Gabriel; González, Begoña; Frutos, Mariano; Méndez Babey, Máximo Increasing urbanization and rising consumption rates are putting pressure on urban systemsto efficiently manage Municipal Solid Waste (MSW). Waste collection, in particular, is one of the mostchallenging aspects of MSW management. Therefore, developing computer-aided tools to supportdecision-makers is crucial. In this paper, a Scatter Search algorithm is proposed to address the wastecollection problem. The literature is relatively scarce in applying this algorithm, which has proven tobe efficient in other routing problems, to real waste management problems. Results from real-worldinstances of an Argentine city demonstrate that the algorithm is competitive, obtaining, in the caseof small instances, the same outcomes as those of an exact solver enhanced by valid inequalities,although requiring more computational time (as expected), and significantly improving the results ofthe latter for the case of larger instances, now requiring much less computational time. Thus, ScatterSearch proves to be a competitive algorithm for addressing waste collection problems.

El artesano de los nombres: La presencia del Crátilo de Platón en el Idiota. De mente de Nicolás de Cusa a propósito de la imposición de nombres; The craftsman of names: the presence of Plato's Cratylus in the Nicholas of Cusa’s Idiota - De mente on the impositionof Name Gonzalez Rios, Hector Jose Nicolás de Cusa (1401-1464), cuyo pensamiento florece en los umbrales de la Modernidad, se sabe explícitamente heredero de una plural tradición platónica. Con todo, resulta decisiva la presencia de los diálogos de Platón con los que el Cusano tuvo contacto, sea por vía directa o bien indirecta. El propósito de este artículo es estudiar uno de los tópicos centrales de la concepción cusana del lenguaje, esto es, la imposición de nombres a las cosas, a la luz del tratamiento que ofrece en el tercero de los Idiotaelibri, el De mente (1450), y evaluar allí la presencia plausible del Crátilo de Platón en su desarrollo. Con ello buscamos ofrecer una clave hermenéutica aún no suficientemente explorada en el ámbito internacional de los estudios sobre el pensamiento de Nicolás de Cusa.; Nicholas of Cusa (1401-1464), whose thought unfolds on the threshold of Modernity, is explicitly known to be the heir of a plural Platonic tradition. The presence of Plato's dialogues with which Nicholas of Cusa had contact, either directly orindirectly, is decisive. The purpose of this article is to study one of the central topics of Cusan's conception of language, that is, the naming of things, in the light of its treatment in the third of the Idiotae libri, the De mente (1450), and to evaluate the plausible presence of Plato's Cratylus in its development. Our aimis to offer a perspective that has not been sufficiently explored in the international sphere of Cusan studies.

Finitud y precariedad: entre el fin de la historia y el cristal del tiempo; Finitude and Precariousness: Between the End of History and the Crystals of Time Ferreyra, Diego Julián La hipótesis de este artículo es que estamos ante un desplazamientode la episteme -concepto que Michel Foucault forjó en Las palabras y las cosas-,y la finitud (que fue parte del plexo de sentido que reinó en Europa occidental a partirdel siglo XIX, y que determinaremos puntualmente a partir de la dialéctica de lo finito de G. W. F. Hegel) no da cuenta yadel “ser bruto del orden”. Para pensar la nueva episteme,que Foucault apenas esbozó, postularemos (con recursos conceptuales de Gilles Deleuze, especialmente las de “cristal detiempo” y “devenir”) la noción de precariedad, donde nuestro frágil ser no deja de vincularse con las fuerzas abismales que a cada instante lo engendran y amenazan con destruirlo.; The hypothesis of this paper is that we are facing a shift of the episteme ―a concept constructed by Michel Foucault in The order of things―, and that therefore finitude (which was part of the web of sense that reigned in Western Europe since the early XIX Century, and that we will determine through Hegel’s dialectic of the finitude) no longer accounts for “order in its primary state”. In order tho conceive the new episteme, which Foucault merely sketched, we will posit (with conceptual resources taken from Gilles Deleuze, notably the “crystal of time”) the notion of precariousness, where our fragile being bonds itself endlessly with abyssal forces that at each instant engender it and menace with its destruction.

Difference in reproductive traits of two sympatric species of Stigmaphyllon (Malpighiaceae) throughout their distribution range: Are they context-dependent? Avalos, Adan Alberto; Ferrucci, María Silvia; Torretta, Juan Pablo Populations of widely distributed plants may experience varying climatic or ecological conditions, leading to uneven evolution of reproductive traits. However, studies on reproductive biology usually focus on just one, or rarely two, sampling areas. In this study, we performed a geographical comparative analysis of the flowering pattern, pollination biology and breeding system of Stigmaphyllon bonariense and S. jatrophifolium (Malpighiaceae) throughout their natural distribution in Argentina, classifying them as ‘northern’ or ‘southern’ according to their geographic location. For this, we selected 4 populations for S. bonariense and 3 for S. jatrophifolium to characterized the flowering peak at both the individual (IFP) and population (PFP) levels, the floral display per inflorescence, the richness of Malpighiaceae species and their pollinators, and the stigmatic and body pollen loads of the pollinators. In addition, we performed manipulative experiments to determine the breeding system. Our results showed that the duration of flowering phenology and the floral display vary between northern and southern populations of both species. These traits include flowering duration and the number of flowers at anthesis per inflorescence (floral display). In addition, the pollination context exhibited latitudinal differences in species richness, phenology, body size of oil-collecting bees, and visitation frequency. Besides, the number of co-flowering Malpighiaceae species varied among populations. However, no considerable differences were observed among populations in terms of stigmatic and body pollen load in pollinators of both species. The breeding system was invariable and consistent in both species with self-incompatibility (SI). These findings suggest that certain reproductive traits of both Stigmaphyllon species are context-dependent and would allow the species maximise reproductive success in each population. Therefore, our results demonstrate that large-scale geographical studies (i.e., several populations with different climatic conditions) and the analysis of various phenological traits are necessary to better understand the reproductive biology of plant species.