1,720,973 research outputs found
Mulita o burrito de la vid y de los frutales Naupactus xanthographus
Get PDFEs 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
Gorgojo de la fruta seca Carpophilus spp.
Get PDFEl 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
Esfíngido Eumorpha spp.
Get PDFEl 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
Primera detección de Drosophila suzukii (Diptera: Drosophilidae) en frutos de zarzamora en Mendoza, Argentina = First record of Drosophila suzukii (Diptera: Drosophilidae) associated to blackberry in Mendoza, Argentina
No full textSe 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 paísThe presence of Drosophila suzukii (Matsumura) associated to blackberry crop var. Prime-Ark (Rubus L. subgenus Rubus Watson) is recorded for the first time in Mendoza, Argentina. The western distribution boundary in Argentina is broadened.EEA MendozaFil: Dagatti, Carla Vanina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Marcucci, Bruno. INTA-CONICET; 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
Influence of two cooking methods of chard on imidacloprid and spinosad residues
Get PDFPosterLeafminer 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
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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