Estación meteorológica inalámbrica, de muy bajo consumo e inteligencia embebida

El trabajo aborda la realización de una estación meteorológica alimentada mediante una placa solar. La placa emisora cuenta con una serie de sensores que dan información a cerca de la temperatura, la humedad, la presión y la iluminación. Los datos son recibidos y se implementan algoritmos de predicción del tiempo cuyo resultado es visualizado por el usuario. Uno de los objetivos fundamentales es que el sistema resultante sea de muy bajo consumo para que pueda operar durante largos períodos

Electrocuestión: música a partir de marcas y gestos

El presente trabajo de tesis consiste en la composición de la música incidental para la obra de teatro titulada “Podrá vivir con eso” de Virginia Inés Villarruel y dirigida por Emilio Guevara. El argumento se basa en un futuro distópico y adquiere centralidad un personaje que lleva a una sala “clínica” su necesidad de despojarse del ser, del sentir, del pensar. En una puesta en escena colorida, la oscuridad se hace presente desde el cuestionamiento ante un sistema opresor. En el presente escrito, se expondrán los recursos utilizados para la composición total de la música.Para acceder a la obra de teatro musicalizada gracias a esta tesis, hacer clic en "Enlace externo".Facultad de Arte

Effect of bioslurries on tomato Solanum lycopersicum L and lettuce Lactuca sativa development

Bioslurries, obtained by anaerobic digestion of fresh organic matter, are emerging as a cheaper and low-impact alternative for synthetic products in agriculture. The aim of this study was to evaluate bioslurry obtained from biogas digestion (Biog), bioslurry for plant nutrition by FAO (Bfao), and lactic fermentation (Blac) as biostimulant in tomato and lettuce plants. Based on a toxicity test, a 10% dilution was finally applied to the plants. In lettuce, Bfao and Blac significantly increased aerial biomass (2.17 ±0.54 and 2.33 ±1.13 g respectively), regarding water control (1.16 ±0.60 g), while root biomass was only increased by Bfao (1.60 ±0.44 g) compared to control (0.66 ±0.34 g). All digestates increased chlorophyll content index (CCI), while yield (Fv/Fm) and performance index (Plabs) did not show differences with water control. In tomato, only aerial biomass was significantly increased by Bfao. All digestates significantly increased CCI, while Fv/Fm was only significantly higher in Bfao and Blac, related to water control. PIabs showed no differences. In both plant species, commercial fertilizer showed significantly higher values for all parameters. In conclusion, all digestates stimulated plant growth, Bfao showed the highest effect on tomatoes and lettuce biomass followed by Blac and Biog, being a cheaper, safer and lower-impact alternative for traditional products for crop growing. Highlights Digestates are valuable by-products, with different characteristics and effects on plant biomass, suggesting complex interactions. All digestates stimulated tomatoes and lettuce growth. The digestate designed by FAO showed the highest effect on plant biomass, constituting an adequate alternative for a cheaper, safer and low-impact strategy for crop growth.Bioslurries, obtained by anaerobic digestion of fresh organic matter, are emerging as a cheaper and low-impact alternative for synthetic products in agriculture. The aim of this study was to evaluate bioslurry obtained from biogas digestion (Biog), bioslurry for plant nutrition by FAO (Bfao), and lactic fermentation (Blac) as biostimulant in tomato and lettuce plants. Based on a toxicity test, a 10% dilution was finally applied to the plants. In lettuce, Bfao and Blac significantly increased aerial biomass (2.17 ±0.54 and 2.33 ±1.13 g respectively), regarding water control (1.16 ±0.60 g), while root biomass was only increased by Bfao (1.60 ±0.44 g) compared to control (0.66 ±0.34 g). All digestates increased chlorophyll content index (CCI), while yield (Fv/Fm) and performance index (Plabs) did not show differences with water control. In tomato, only aerial biomass was significantly increased by Bfao. All digestates significantly increased CCI, while Fv/Fm was only significantly higher in Bfao and Blac, related to water control. PIabs showed no differences. In both plant species, commercial fertilizer showed significantly higher values for all parameters. In conclusion, all digestates stimulated plant growth, Bfao showed the highest effect on tomatoes and lettuce biomass followed by Blac and Biog, being a cheaper, safer and lower-impact alternative for traditional products for crop growing. Highlights Digestates are valuable by-products, with different characteristics and effects on plant biomass, suggesting complex interactions. All digestates stimulated tomatoes and lettuce growth. The digestate designed by FAO showed the highest effect on plant biomass, constituting an adequate alternative for a cheaper, safer and low-impact strategy for crop growth

Mixed-breed guarding dogs reduce conflict between goat herders and native carnivores in Patagonia

Goat husbandry is the main rural livelihood in the northern Patagonian steppe of Argentina, and herders kill any carnivore that they believe threatens their herds, including the endangered Andean cat (Leopardus jacobita). We evaluated the use of local, mediumsized, mixed-breed guarding dogs to reduce predation and retaliatory killing of carnivores. We interviewed 64 herders, and delivered 37 puppies to 25 herders. Most economic loss was attributed to cougars (Puma concolor) and culpeos (Lycalopex culpaeus). All herders with dogs that reached the working stage reported reduced rates of predation, and 88% reported that they no longer kill carnivores. Among herders who were not using dogs, 89% of them reported increased predation, and 100% of them confirmed that they kill carnivores. Mixedbreed dogs can be effective in reducing both predation losses and retaliatory killing, but their success depends on the ability and willingness of herders to train and use them properly

Meta-Analysis of Yields of Crops Fertilized with Compost Tea and Anaerobic Digestate

Organic inputs constitute an alternative way to replace or reduce the use of agrochemicals in order to increase sustainability and reduce negative impacts of agriculture on the environment. A consistent determination of average yields obtained with organic fertilizers in comparison to synthetic fertilizers is necessary to assess their potential in both commercial and organic agriculture. To achieve this goal, a meta-analysis of existing scientific data of yields obtained with digestate or compost tea fertilization was performed. After a systematic bibliographic search of scientific publications, 35 final papers remained from >1000 initial results. Data of crop yield with digestate or compost tea fertilization, as well as control and synthetic fertilizer treatments, were extracted from the selected articles and used to calculate response ratios (ratios of means), obtaining 106 observations. The meta-analysis showed that digestate fertilization produced yields 80% higher than the control. Yields were statistically similar to those obtained with conventional treatments with chemical fertilization (only 2% lower in average). The results for digestate are considered robust as the significance did not change after conducting publication bias analyses. However, the high heterogeneity observed suggests the existence of explanatory variables accounting for part of the observed dispersion. Subgroup analyses were conducted to determine the variation of the results of digestate across crop species and field or greenhouse experiments, while compost teas did not present adequate data quantity to obtain reliable results. According to this meta-analysis, anaerobic digestate had an acceptable performance as fertilizer for several crops at a reported application rate ranging from 100 to 480 kg N ha−1. Regarding compost tea, yields were 92% higher than the control and 10% lower than synthetic fertilization treatments, although more information is required to draw a conclusive result due to the low number of observations of this fertilizer. Further investigation is necessary to understand yield variations under different scenarios to study the influence of secondary variables and to propose management measures for producers.Fil: Curadelli, Franco. Universidad Nacional de Cuyo; ArgentinaFil: Alberto, Marcelo. Universidad Nacional de Cuyo; ArgentinaFil: Uliarte, Ernesto Martín. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Mendoza-San Juan. Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Combina, Mariana. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Mendoza-San Juan. Estación Experimental Agropecuaria Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaFil: Funes Pinter, Mariano Iván. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Mendoza-San Juan. Estación Experimental Agropecuaria Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentin

Non-catecholaminergic vasopressors in the management of shock: a narrative review and meta-analysis of randomized clinical trials

Martín Díaz: Estudiante de Facultad de Medicina, Universidad de la República. Montevideo, Uruguay.-- Mariana Funes: Estudiante de Facultad de Medicina, Universidad de la República. Montevideo, Uruguay.-- Verónica Hermida: Estudiante de Facultad de Medicina, Universidad de la República. Montevideo, Uruguay.-- Catalina Kavedjian: Estudiante de Facultad de Medicina, Universidad de la República. Montevideo, Uruguay.-- Martín Kavedjian: Estudiante de Facultad de Medicina, Universidad de la República. Montevideo, Uruguay.-- José Gorrasi: Docente supervisor, Prof. Agr. Departamento de Emergencia, Facultad de Medicina, Universidad de la República, Uruguay. Contacto: José Gorrasi - [email protected]; Martín Kavedjian – [email protected] refractariedad a catecolaminas es un final hemodinámico común a los diferentes tipos de shock, que deriva en la administración de altas dosis de estos, situación asociada a resultados clínicos desfavorables. Es de interés el uso de vasopresores no catecolaminérgicos, que actúan en diferentes vías de la contracción muscular lisa vascular, aportando un efecto vasopresor sinérgico. El objetivo es evaluar la respuesta a vasopresores no catecolaminérgicos en shock asociado al postoperatorio de cirugía cardíaca (POCC), sepsis y grandes quemados. Se realizó una búsqueda en las bases PubMed, LILACS, Embase y Cochrane Central Register de estudios clínicos y revisiones en pacientes adultos con shock séptico, POCC o asociado a grandes quemados y administración de al menos uno de los siguientes vasopresores: azul de metileno (AM), angiotensina II (AII), vasopresina (VP), terlipresina (TP). Se realizó una revisión narrativa y un metaanálisis de ensayos clínicos aleatorizados (ECA) para el análisis estadístico de variables hemodinámicas, efecto ahorrador de catecolaminas y mortalidad. Se incluyeron 137 artículos, 31 ECA se utilizaron para el metaanálisis. Del análisis cualitativo se observó un aumento de la presión arterial media (PAM) y resistencias vasculares sistémicas (RVS) con efecto ahorrador de catecolaminas para los 4 fármacos. El metaanálisis evidenció una disminución significativa de la mortalidad con AM (RR: 0,12 IC95%: 0,02;0,95) en pacientes con shock en el POCC. No hubo cambios en la mortalidad en shock séptico. Todos los fármacos aumentan la PAM y tienen efecto ahorrador de catecolaminas preservando la función cardíaca. Sus efectos sobre la mortalidad son menos claros.Refractoriness to catecholamines is a final potential hemodynamic state for all types of circulatory shock leading to the administration of high doses of catecholamines, which is associated with poor clinical outcomes. The pathophysiology of systemic vasodilation is complex, in this sense, there is a rising interest in non-catecholaminergic vasopressors which target different vasoconstriction pathways, potentially resulting in a synergistic vasopressor effect. The purpose is to assess the hemodynamic and clinical response of patients with shock associated with sepsis, post cardiac surgery (POCC) and burns to non-catecholaminergic vasopressors. PubMed, LILACS, Embase and the Cochrane Central Register were searched. Clinical studies and reviews in adult patients with septic, postcardiac surgery and burns shock with the administration of at least one of the following non adrenergic vasopressors: methylene blue (MB), angiotensin II (AII), vasopressin (VP), terlipressin (TP) were included. A literature review and a meta-analysis of randomized clinical trials was done to analyze hemodynamic variables, catecholaminergic sparing effect and mortality 137 articles were included, 31 clinical trials for the metanalysis. The qualitative revision showed an increase in mean arterial pressure (MAP), systemic vascular resistance (SVR) and a catecholamine sparing effect for all vasopressors. Metanalysis results evidenced a significant decrease in mortality in shock postcardiac surgery with MB (RR: 0,12 IC95%: 0,02;0,95). Non-significant effects were shown for mortality in septic shock. All included vasopressors increase MAP resulting in a catecholamine sparing effect with no decrease in cardiac output. Effects on mortality are less precise

Performance of grape marc and organic residues compost as substrate in lettuce (Lactuca sativa) seedlings

Composting is an aerobic process used to treat organic residues, which results in a high quality product, able to be adopted as plant substrate or soil amendment. In the present study, the performance of compost on the germination and biomass of Lactuca sativa var Grand rapids seedlings, with and without fertilization, was evaluated. The two types of composts used were prepared from two different raw materials: grape marc and a mixture of grape marc, goat manure, leaves and alfalfa. The experiment was carried out in seedling trays, in a split plot design with two factors (fertilization and substrate) and four repetitions. Sand were used as control and a commercial substrate as traditional treatment. Results indicated that fertilization had not significant effect on germination, but increased seedling biomass. Both compost also increased lettuce biomass, with the highest values obtained in mixture compost treatments. Only sand produced the lowest germination values, while no differences were detected among the other substrates. Compost mixture showed the highest seedling biomass, suggesting a higher quality as a plant substrate. It is necessary to perform further analyses and studies with different organic residues in order to determine physico-chemical and biological properties to evaluate the quality of the product obtained.Composting is an aerobic process used to treat organic residues, which results in a high quality product, able to be adopted as plant substrate or soil amendment. In the present study, the performance of compost on the germination and biomass of Lactuca sativa var Grand rapids seedlings, with and without fertilization, was evaluated. The two types of composts used were prepared from two different raw materials: grape marc and a mixture of grape marc, goat manure, leaves and alfalfa. The experiment was carried out in seedling trays, in a split plot design with two factors (fertilization and substrate) and four repetitions. Sand were used as control and a commercial substrate as traditional treatment. Results indicated that fertilization had not significant effect on germination, but increased seedling biomass. Both compost also increased lettuce biomass, with the highest values obtained in mixture compost treatments. Only sand produced the lowest germination values, while no differences were detected among the other substrates. Compost mixture showed the highest seedling biomass, suggesting a higher quality as a plant substrate. It is necessary to perform further analyses and studies with different organic residues in order to determine physico-chemical and biological properties to evaluate the quality of the product obtained

Hezkuntza eta Eskola: hezkuntza jardunbideen eta gizarte justuagoen bilakaeraren arteko zubi

Gaur egungo gizartearen aldaketa iraunkorrak eskolan ez ezik, irakasleen eginkizunean ere eragiten du, haiengandik espero duguna zein haien rola aldatuz. Gizarte honek bere garapen ekonomiko, sozial eta kulturala baldintzatzen duten erronka ugariri aurre egin behar dio, injustizia sozialak areagotua. Hain zuzen ere, bidegabekeria horiek saihesteko, gobernu askok kalitatezko heziketa lortzea dute helburu nagusietako bat. Alde horretatik, funtsezko xedea da hezkuntza-politikak eskola-praktikekin kontrastatzea, irakasleen zeregina sakonean ezagutzeko eta ulertu ahal izateko. Horretarako, hemen aurkeztu behar dugun galdera eragile izan dugu hasieratik: Ba al da eskola injustizia sozialaren arazoak erreproduzitzen eta areagotzen dituen erakundea? Erabilitako metodologiari dagokionez, kasu-azterketa bat erabili dugu narratiba ikuspegi batekin. Ondorioz, gaur egungo gizartearen konplexutasuna irakaskuntza-rolak eraldatzen ari dela ikusi dugu. Era berean, sistemak irakasleek eta eskolak justizia sozial handiagoa lortzeko borrokatzen duten aukerak ere mugatzen dituela dirudi

Efecto de bioles en el desarrollo de tomate Solanum lycopersicum L y lechuga Lactuca sativa

Bioslurries, obtained by anaerobic digestion of fresh organic matter, are emerging as a cheaper and low-impact alternative for synthetic products in agriculture. The aim of this study was to evaluate bioslurry obtained from biogas digestion (Biog), bioslurry for plant nutrition by FAO (Bfao), and lactic fermentation (Blac) as biostimulant in tomato and lettuce plants. Based on a toxicity test, a 10% dilution was finally applied to the plants. In lettuce, Bfao and Blac significantly increased aerial biomass (2.17 ±0.54 and 2.33 ±1.13 g respectively), regarding water control (1.16 ±0.60 g), while root biomass was only increased by Bfao (1.60 ±0.44 g) compared to control (0.66 ±0.34 g). All digestates increased chlorophyll content index (CCI), while yield (Fv/Fm) and performance index (Plabs) did not show differences with water control. In tomato, only aerial biomass was significantly increased by Bfao. All digestates significantly increased CCI, while Fv/Fm was only significantly higher in Bfao and Blac, related to water control. PIabs showed no differences. In both plant species, commercial fertilizer showed significantly higher values for all parameters. In conclusion, all digestates stimulated plant growth, Bfao showed the highest effect on tomatoes and lettuce biomass followed by Blac and Biog, being a cheaper, safer and lower-impact alternative for traditional products for crop growing.Los bioles son bioinsumos obtenidos de la digestión anaeróbica de materia orgánica, que surgen como una alternativa económica y de bajo impacto para la agricultura. El objetivo del presente trabajo fue evaluar los bioles obtenidos de: la producción de biogás (Biog), elaborado para la nutrición vegetal con base en la FAO (Bfao), y de una fermentación láctica (Blac),para utilizarse como bioestimulantes enlechuga y tomate. Sobre la basedel análisisde toxicidad, la dilución al 10% fue seleccionada para aplicarse en las plantas. En lechuga, Bfao y Blac incrementaron significativamente la biomasa aérea (2,17 ±0,54 y 2,33 ±1,13 g respectivamente), referente al control (1,16 ±0,60 g), mientras que la biomasa radical presentó mayores valores solo en Bfao (1,60 ±0,44 g), comparado al control (0,66 ±0,34 g). Los bioles incrementaron el contenido de clorofila (CCI), mientras que los índices de rendimiento (Fv/Fm) y de desempeño (Plabs) no se diferenciaron del control. En tomate, solo la biomasa aérea fue significativamente mayor en Bfao, todos los bioinsumos incrementaron significativamente CCI, mientras que Fv/Fm solo por Bfao y Blac, y PIabs no mostró diferencias respecto al control. En ambos, lechuga y tomate el fertilizante comercial fue el tratamiento con mayores valores, sin embargo, todos los bioinsumos estimularon el crecimiento vegetal. El mayor efecto fue producido por Bfao, seguido de Blac y Biog, siendo una alternativa adecuada para una producción vegetal económica, segura y con menor impacto.Fil: Funes Pinter, Mariano Iván. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; ArgentinaFil: Salomon, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; ArgentinaFil: Martín, José Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; ArgentinaFil: Uliarte, Ernesto Martín. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Hidalgo, Andrea. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentin

Nitrogen-doped carbon nanodots deposited on titania nanoparticles: unconventional near-infrared active photocatalysts for cancer therapy

Cancer represents a major public health issue and a primary cause of death for the mankind and the search for alternative cancer treatments that assist or alleviate the drawbacks of current cancer therapies remains imperative. Nanocatalytic medicine represents a new discipline that aims at exploiting the unique response of heterogeneous catalysts exposed to unconventional conditions such as those encountered in the tumor microenvironment (TME). Photo-triggered cancer therapies using light-activable catalytic materiales can stimulate and activate multiple biological processes and represent a very promising field of study. Herein, we evaluate the use of carbon nanodots with different composition (CNDs) retrieved by laser pyrolysis as potential near-infrared (NIR) photosensitizers able to activate P25 semiconductor nanostructured photocatalysts. We describe the enhanced photocatalytic response towards glucose conversion and reactive oxygen species (ROS) generation upon irradiation with NIR-LEDs when CNDs doped with heteroatoms were tested. The most active photocatalysts were evaluated in the presence of cancer cells and revealed a promising photodynamic effect under NIR irradiation. This work represents one of the scarce examples of a conventional inorganic photocatalyst containing TiO2 that is translated into a biomedical application with a successful outcome