Caracterización y manejo de los pastizales correntinos

Esta publicación contiene las tecnologías disponibles del manejo del campo natural para lograr una producción ganadera biológica y económicamente sustentable para la región. En un proceso que se inicia con el conocimiento acabado de las características del recurso que se quiere manejar, para luego transitar un camino con la aplicación de tecnologías de proceso y finalmente en la utilización de tecnologías que requieren mayor uso de insumos. Este proceso de intensificación es acompañado por la aparición de nuevas herramientas que facilitan el monitoreo de estos sistemas emergentes. Cada tecnología propuesta es sustentada por resultados de ensayos realizados en la Estación Experimental Agropecuaria INTA Mercedes o en campos de productores que le dan solidez a las mismas. La mayoría de estos ensayos son de larga duración abarcando la variabilidad climática inter anual que caracteriza nuestra región y que marca la producción ganadera de la misma.EEA MercedesFil: Pizzio, Rafael Mario. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes; ArgentinaFil: Bendersky, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes; ArgentinaFil: Barbera, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes; ArgentinaFil: Maidana, Carlos Emilio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes; Argentin

Of echo chambers and contrarian clubs: Exposure to political disagreement among German and Italian users of Twitter

Scholars have debated whether social media platforms, by allowing users to select the information to which they are exposed, may lead people to isolate themselves from viewpoints with which they disagree, thereby serving as political “echo chambers.” We investigate hypotheses concerning the circumstances under which Twitter users who communicate about elections would engage with (a) supportive, (b) oppositional, and (c) mixed political networks. Based on online surveys of representative samples of Italian and German individuals who posted at least one Twitter message about elections in 2013, we find substantial differences in the extent to which social media facilitates exposure to similar versus dissimilar political views. Our results suggest that exposure to supportive, oppositional, or mixed political networks on social media can be explained by broader patterns of political conversation (i.e., structure of offline networks) and specific habits in the political use of social media (i.e., the intensity of political discussion). These findings suggest that disagreement persists on social media even when ideological homophily is the modal outcome, and that scholars should pay more attention to specific situational and dispositional factors when evaluating the implications of social media for political communication

Verdeos de invierno. Campaña 2020. INTA Mercedes

En colaboración con los siguientes técnicos: Ing. Agr. Carlos Aguirre. Asesor privado. Ing. Agr. Enrique Kelly. Barenbrug Palaversich. Med. Vet. Pedro Mosna. Est. Doña Ester. Ing. Fabián Morales. Gentos. Ing. Damián Moreno Presoto. Asesor privado. Sr. Gustavo Blanco. Jefe de Chacra en Kitasan. Ing. Manuel Panario. Asesor privadoEn el siguiente informe se detallan los resultados obtenidos en ensayos comparativos de raigrás anual y avena realizados en la EEA INTA Mercedes, durante la campaña 2020. También se describen las condiciones climáticas imperantes en la campaña, y algunas mediciones en pastoreo en la experimental y en campos de productores del centro y sur de Corrientes.EEA MercedesFil: Barbera, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes (Corrientes); ArgentinaFil: Benitez, Julio Cesar. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes (Corrientes); ArgentinaFil: Preisz, Victor Hernan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes (Corrientes); ArgentinaFil: Zabala Mendez, Martin Horacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bella Vista (Corrientes). Agencia de Extensión Rural Goya; Argentin

Cosmology and Cluster Halo Scaling Relations

We explore the effects of dark matter and dark energy on the dynamical scaling properties of galaxy clusters. We investigate the cluster Faber-Jackson (FJ), Kormendy and Fundamental Plane (FP) relations between the mass, radius and velocity dispersion of cluster size halos in cosmological $N$-body simulations. The simulations span a wide range of cosmological parameters, representing open, flat and closed Universes. Independently of the cosmology, we find that the simulated clusters are close to a perfect virial state and do indeed define a Fundamental Plane. The fitted parameters of the FJ, Kormendy and FP relationships do not show any significant dependence on $\Omega_m$ and/or $\Omega_{\Lambda}$. The one outstanding effect is the influence of $\Omega_{m}$ on the thickness of the Fundamental Plane. Following the time evolution of our models, we find slight changes of FJ and Kormendy parameters in high $\Omega_m$ universe, along with a slight decrease of FP fitting parameters. We also see an initial increase of the FP thickness followed by a convergence to a nearly constant value. The epoch of convergence is later for higher values of $\Omega_m$ while the thickness remains constant in the low $\Omega_m$ $\Lambda$-models. We also find a continuous increase of the FP thickness in the Standard CDM (SCDM) cosmology. There is no evidence that these differences are due to the different power spectrum slope at cluster scales. From the point of view of the FP, there is little difference between clusters that quietly accreted their mass and those that underwent massive mergers. The principal effect of strong mergers is to change significantly the ratio of the half-mass radius $r_{half}$ to the harmonic mean radius $r_h$.Comment: 24 pages, 17 figures, submitted to MNRA

Competencias para el empleo: comunicación y emprendimiento

Depto. de Investigación y Psicología en EducaciónFac. de EducaciónFALSEsubmitte

Caracterización multi-ambiental de la fecha de floración en cultivares de Raigrás anual (L. multiflorum Lam.)

Publicado dentro de la Revista Argentina de Producción Animal, v 39 Suplemento 1 (2019).El importante número de cultivares de raigrás anual (RGA) presentes en el mercado, genera la necesidad de conocer tanto su potencial productivo como el comportamiento fenológico de los mismos, de manera de poder determinar que material se adapta mejor a cada sistema productivo. El objetivo del presente trabajo fue caracterizar el ciclo a floración de cultivares de Raigrás anual en diferentes localidades de la Argentina.EEA PergaminoFil: Ré, Alejo Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concepción del Uruguay; UruguayFil: Lavandera, Javier Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Forrajeras; ArgentinaFil: Barbera, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes (Corrientes); ArgentinaFil: Romero, Luis Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Gallego, Juan José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Valle Inferior de Río Negro; ArgentinaFil: Neira Zilli, Fernanda. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Valle Inferior de Río Negro; ArgentinaFil: Méndez, Daniel Gustavo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria General Villegas; Argentin

Seguimiento de verdeos de raigrás anual en establecimientos ganaderos del sur de Corrientes

La provincia de Corrientes cuenta con ambientes aptos para la implantación de verdeos de invierno, especialmente el centro sur sobre campos de altura y monte de ñandubay. Los verdeos son una alternativa tecnológica válida que permite cubrir el bache forrajero del periodo invernal, y mejorar los resultados productivos y económicos del sistema ganadero.EEA MercedesFil: Preisz, Víctor Hernán. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes. Agencia de Extensión Rural Curuzú Cuatiá; Argentina.Fil: Barbera, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes; Argentina.Fil: Rivero, Luis Domingo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes; Argentina.Fil: Beccaria, Mauricio Daniel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes. Agencia de Extensión Rural Curuzú Cuatiá; Argentina.Fil: Sosa Leguizamón, Gustavo Andrés. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes. Agencia de Extensión Rural Curuzú Cuatiá; Argentina.Fil: Castro, Federico. Actividad privada; Argentina.Fil: Vallejo, Fernando. Actividad privada; Argentina.Fil: Sirtori, Oscar. Actividad privada; Argentina.Fil: France, Federico. Actividad privada; Argentina.Fil: Guenaga, Miguel. Actividad privada; Argentin

Comparing a Novel Neuroanimation Experience to Conventional Therapy for High-Dose Intensive Upper-Limb Training in Subacute Stroke: The SMARTS2 Randomized Trial

BACKGROUND Evidence from animal studies suggests that greater reductions in poststroke motor impairment can be attained with significantly higher doses and intensities of therapy focused on movement quality. These studies also indicate a dose-timing interaction, with more pronounced effects if high-intensity therapy is delivered in the acute/subacute, rather than chronic, poststroke period. OBJECTIVE To compare 2 approaches of delivering high-intensity, high-dose upper-limb therapy in patients with subacute stroke: a novel exploratory neuroanimation therapy (NAT) and modified conventional occupational therapy (COT). METHODS A total of 24 patients were randomized to NAT or COT and underwent 30 sessions of 60 minutes time-on-task in addition to standard care. The primary outcome was the Fugl-Meyer Upper Extremity motor score (FM-UE). Secondary outcomes included Action Research Arm Test (ARAT), grip strength, Stroke Impact Scale hand domain, and upper-limb kinematics. Outcomes were assessed at baseline, and days 3, 90, and 180 posttraining. Both groups were compared to a matched historical cohort (HC), which received only 30 minutes of upper-limb therapy per day. RESULTS There were no significant between-group differences in FM-UE change or any of the secondary outcomes at any timepoint. Both high-dose groups showed greater recovery on the ARAT (7.3 ± 2.9 points; P = .011) but not the FM-UE (1.4 ± 2.6 points; P = .564) when compared with the HC. CONCLUSIONS Neuroanimation may offer a new, enjoyable, efficient, and scalable way to deliver high-dose and intensive upper-limb therapy

Clinical and structural brain correlates of hypomimia in early-stage Parkinson's disease

Altres ajuts: acord transformatiu CRUE-CSICBackground and purpose: Reduced facial expression of emotions is a very frequent symptom of Parkinson's disease (PD) and has been considered part of the motor features of the disease. However, the neural correlates of hypomimia and the relationship between hypomimia and other non-motor symptoms of PD are poorly understood. Methods: The clinical and structural brain correlates of hypomimia were studied. For this purpose, cross-sectional data from the COPPADIS study database were used. Age, disease duration, levodopa equivalent daily dose, Unified Parkinson's Disease Rating Scale part III (UPDRS-III), severity of apathy and depression and global cognitive status were collected. At the imaging level, analyses based on gray matter volume and cortical thickness were used. Results: After controlling for multiple confounding variables such as age or disease duration, the severity of hypomimia was shown to be indissociable from the UPDRS-III speech and bradykinesia items and was significantly related to the severity of apathy (β = 0.595; p < 0.0001). At the level of neural correlates, hypomimia was related to motor regions brodmann area 8 (BA 8) and to multiple fronto-temporo-parietal regions involved in the decoding, recognition and production of facial expression of emotions. Conclusion: Reduced facial expressivity in PD is related to the severity of symptoms of apathy and is mediated by the dysfunction of brain systems involved in motor control and in the recognition, integration and expression of emotions. Therefore, hypomimia in PD may be conceptualized not exclusively as a motor symptom but as a consequence of a multidimensional deficit leading to a symptom where motor and non-motor aspects converge