197 research outputs found
Esfíngido Eumorpha spp.
El esfíngido es un insecto lepidóptero (mariposas y polillas). Si bien se han detectado varias especies en Cuyo, la más común es Eumorpha analis. El huevo es de forma esférica, de color verde amarillento y 5-8 mm de tamaño. Es colocado en forma individual en las hojas. Las larvas son verdes o pardas. Poseen cuatro o cinco rayas laterales lisas de color cremoso, siendo la última de mayor grosor. Pasa por cinco estadios, alcanzando un tamaño final de 8 a 10 cm. Las pupas tienen forma de capullo fusiforme, de color castaño oscuro, mide de 4,5 a 5 cm. La polilla adulta posee un tamaño de 8,5 a 10 cm. El cuerpo de ambos sexos es de color castaño rosado oscuro, fusiforme, robusto. El abdomen presenta una banda clara en la parte media y manchas oscuras en todos los segmentos. Alas con rayas blanco rosadas y manchas rojas y blancas.EEA MendozaFil: Marcucci, Bruno. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentin
The Sentiment Hidden in Italian Texts Through the Lens of A New Dictionary
Resumen de la comunicación[EN] The aim of this work is to propose a strategy to classify texts (or parts of them) in an ordinal emotional scale to gauge a sentiment indicator in every domain. In particular, we develop a new dictionary for the Italian language which is built using an objective method where the polarities of synonyms and antonyms are accounted for in an iterative process. To build our sentiment indicator negations and intensifiers are also used, thus considering the context in which the single word is written. We apply our new dictionary to extract the sentiment from a set of around 40 issues of the Bank of Italy quarterly Economic Bulletin. Our results show that our strategy is able to correctly identify the sentiment expressed in the Bulletins, which is correlated to the main macroeconomic variables (such as national GDP, investment, consumption or unemployment rate). Our analysis shows that sentiment represents not only an evaluation of the stylistic way in which texts are written, but also a valid synthesis of all the external factors analysed in the same document.Bruno, G.; Marcucci, J.; Mattiocco, A.; Scarnò, M.; Sforzini, D. (2018). The Sentiment Hidden in Italian Texts Through the Lens of A New Dictionary. En 2nd International Conference on Advanced Reserach Methods and Analytics (CARMA 2018). Editorial Universitat Politècnica de València. 265-265. https://doi.org/10.4995/CARMA2018.2018.858026526
Gorgojo de la fruta seca Carpophilus spp.
El ataque de gorgojos es una de las principales causas de deterioro y pérdida durante el almacenamiento de frutos secos. Las larvas miden 6 mm de largo, son blancas amarillentas, con la cabeza y el extremo del abdomen pardo, escasa pilosidad y abdomen con dos
gruesos tubérculos terminales. Los adultos miden de 3 a 4 mm de largo. Tienen el cuerpo oval, castaño a pardo claro. Las alas (elitros) son opacas, con pelos oscuros y claros, con el tegumento café negruzco y manchas amarillas. Son cortas y no alcanzan a cubrir los últimos segmentos abdominales.EEA MendozaFil: Gonzalez, Marcela Fabiana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Marcucci, Bruno. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentin
Mulita o burrito de la vid y de los frutales Naupactus xanthographus
Es un gorgojo de la familia Curculionidae. Los huevos se encuentran agrupados y tienen forma ovoide de color amarillo-anaranjado, de 1-5 mm. Las larvas son blanco-amarillentas, con cabeza de color castaño oscuro, ápodas, curculioniformes, alcanzando 20 mm de longitud. Las pupas, de 20 mm de largo, son de color blanco-cremoso. El cuerpo del adulto mide unos 10-15 mm de longitud, es de color marrón-grisaceo, con rayas amarillas o amarillo-verdosas en sentido longitudinal.EEA MendozaFil: Marcucci, Bruno. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Picca, Cecilia Nelida. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rama Caida; Argentin
Observations of IMF coherent structures and their relationship to SEP dropout events
Abstract. The solar energetic particle (SEP) events from impulsive solar flares are often characterized by short-timescale modulations affecting, at the same time, particles with different energies. Several models and simulations suggest that these modulations are observed when SEPs propagate through magnetic structures with a different connection with the flare site. However, in situ observations rarely showed clear magnetic signatures associated with these modulations. In this paper we used the Grad–Shafranov reconstruction to perform a detailed analysis of the local magnetic field topology during the SEP event of 9–10 January 1999, characterized by several SEP dropouts. An optimization procedure is used to identify, during this SEP event, the magnetic structures which better satisfy the Grad–Shafranov assumptions and to evaluate the direction of their invariant axis. We found that these two-dimensional structures, which are flux ropes or current sheets with a more complex field topology, are generally associated with the maxima in the SEP counts. This association suggests that the SEPs propagate within these structures and, since their gyration radii is much smaller than the transverse dimension of these structure, cannot escape from them
Influence of two cooking methods of chard on imidacloprid and spinosad residues
PosterLeafminer flies, thrips, aphids and whiteflies are the most common pests of chard (Beta vulgaris var. cicla). Intense damage not only reduces chard yield, but also the quality of leafy vegetables. The pesticides widely used against them are imidacloprid and spinosad.
The ingestion of small traces of these pesticides for prolonged periods of time can affect the health and well-being of the consumer.
The objective of this work was to determine the influence of two cooking methods of chard, microwave and boiling, on the pesticides under study. Imidacloprid OD 20% (90 cm3.hL-1) and spinosad 48 SC (15cm3.hL-1) were applied in a chard crop in a farm located in Rodeo del Medio, Guaymallén, Mendoza. In order to have enough residue to observe the behavior of the pesticides tested, the harvest was carried out on the same day of spraying. Two tests and uncooked control were performed with three replicates each. Boiling test (H), consisted of a pot with boiling water, added 300g of unwashed leaf chard, left to cook for 8 minutes, then drained and processed.
Microwave test (M), consisted of microwave cooking of 300g of unwashed leaf chard in polyethylene bags for a 900-watt microwave oven for 5 minutes. Once cold, it was processed. For the analysis of pesticide residues, the QuEChERS method (EN 15662) was
performed. Imidacloprid and spinosad were quantified by UHPLC (ESI +) - MS / MS. To calculate the influence of the treatments carried out, they were compared to the control. Imidacloprid residues in chard were reduced 80% in treatment H and 12% in treatment M. Spinosad residues increased 33% in treatment H and 6% in treatment M. Imidacloprid assay shown a greater reduction in treatment H compared with treatment M, probably caused by the high-water solubility of this pesticide (610mg. L-1). Regarding spinosad, both treatments revealed that the pesticide concentrated, probably due to the low solubility in water (7.6 mg. L-1). The high level of residues from treatment H could be due to the greater weight loss of chard compared to treatment M. We conclude that the behavior of the pesticides tested depends on the cooking methods used and their solubility.EEA MendozaFil: Turaglio, Maria Eugenia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Navarro, Rosanna Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Marcucci, Bruno. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Marcucci, Bruno. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Herrera, Maria Eugenia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Becerra, Violeta Cristina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentin
Primera detección de Drosophila suzukii (Diptera: Drosophilidae) en frutos de zarzamora en Mendoza, Argentina
Se cita por primera vez en Mendoza, Argentina a Drosophila suzukii (Matsumura) asociada al cultivo de zarzamora variedad Prime-Ark (Rubus L. subgen. Rubus Watson) y se amplía el límite oeste de distribución de la misma en el país
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Credit risk in European banks: The bright side of the internal ratings based approach
This paper investigates the accuracy of internal rating based (IRB) models in measuring credit risk. We contribute to the growing debate on the current prudential regulatory framework by investigating the use of validated IRB models in promoting efficient risk management practices. Our empirical analysis is based on a novel panel data set of 177 Western European banks observed from 2008 to 2015, in the aftermath of the financial and economic crisis. We find that IRB banks were able to curb the increase in credit risk driven by the macroeconomic slowdown better than banks under the standardized approach. This suggests that the introduction of the internal ratings based approach by Basel II has promoted the adoption of stronger risk management practices among banks, as meant by the regulators
Occurrence of Goniozus legneri (Hymenoptera: Bethylidae) and its association to lepidopteran pests in Northern cultivated oasis of Mendoza province, Argentina
Goniozus legneri Gordh (Hymenoptera: Bethylidae) es un ectoparasitoide larvario de lepidópteros, con trayectoria mundial como agente de biocontrol de diversas plagas agrícolas. Mediante amplios monitoreos, esta avispa fue encontrada en cuatro distritos distantes de la provincia de Mendoza parasitando tres plagas de lepidópteros: Lobesia botrana (Den. et Shiff.) en vid, Ectomyelois ceratoniae (Zeller) en nogal y “espinillo” ( Vachellia caven (Molina) . ) Seigler et Ebinger) y Cydia pomonella (L.) en nogal. Para corroborar la identificación de especies de parasitoides y analizar su viabilidad poblacional en esta región, se realizaron estudios de genitales masculinos y cruces sexuales entre avispas silvestres y criadas en laboratorio. Además, informamos por primera vez la interacción natural huésped-parasitoide de L. botrana con este parasitoide en viñedos de Argentina.Goniozus legneri Gordh (Hymenoptera: Bethylidae) is a larval ectoparasitoid of lepidopterans, with a worldwide history as a biocontrol agent of various agricultural pests. By means of extensive monitoring, this wasp was found in four distant districts of Mendoza province parasitizing three lepidopteran pests: Lobesia botrana (Den. et Shiff.) in grapevine, Ectomyelois ceratoniae (Zeller) in walnut and “espinillo” (Vachellia caven (Molina) Seigler et Ebinger) and Cydia pomonella (L.) in walnut. To corroborate the parasitoid species identification and to analyze its population viability in this region, studies of male genitalia and sexual crossings between wild and laboratory-reared wasps were conducted. Further, we report for the first time the natural host-parasitoid interaction of L. botrana with this parasitoid in vineyards from Argentina.EEA MendozaFil: Marcucci, Bruno. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza. Laboratorio de Fitofarmacia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mazzitelli, María E. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza. Laboratorio de Fitofarmacia; Argentina.Fil: Garrido, Silvina A. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle. Sanidad Vegetal; Argentina.Fil: Cichón, Liliana I. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle. Sanidad Vegetal; Argentina.Fil: Becerra, Violeta C. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza. Laboratorio de Fitofarmacia; Argentina.Fil: Luna, María G. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios de Parasitológicos y Vectores; Argentina. Universidad Nacional de La Plata. Centro de Estudios de Parasitológicos y Vectores; ArgentinaFil: Luna, María G. Universidad Nacional de San Antonio de Areco; Argentina
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