1,720,954 research outputs found
Colección de genotipos de batata de sanidad controlada del Instituto de Patología Vegetal
Full text linkEn Japón, que lidera el consumo de batata, este cultivo es considerado como un alimento “casi perfecto” porque provee todos los nutrientes cuando se lo combina con proteínas y lípidos. La calidad del material de plantación es uno de los aspectos más importantes para asegurar el éxito de un cultivo de batata. Está dada por dos factores fundamentales: la variedad y la sanidad. La tendencia mundial es el empleo de cultivares precoces de alta productividad, con compuestos saludables como los carotenoides, en
los cultivares de pulpa amarilla o anaranjada y las antocianinas, en los de pulpa morada. Estos, además, deben estar libres de virus, principal limitante de la producción cuantitativa y cualitativamente.Instituto de Patología VegetalFil: Vilanova Perez, Antonella. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Suasnabar, Ramon Rodolfo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Di Feo, Liliana del Valle. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentin
Influencia de un complejo viral en rendimiento y contenido de clorofila de dos variedades de batata
No full textLas virosis son la principal limitante del rendimiento de batata, quinto cultivo alimenticio del mundo. En Argentina, el “encrespamiento amarillo” (EA), complejo viral con siete agentes involucrados, causa notables pérdidas en los genotipos de toda región productiva. Se analizó la infl uencia del EA en componentes de rendimiento de los cvs Arapey INIA y Beauregard. mediante ensayos comparativos que combinaron dos condiciones sanitarias (sana vs enferma) y dos genotipos. Las plantas sanas se obtuvieron por termoterapia y cultivo in vitro de meristemas, y las enfermas, injertando púas con EA. Hubo diferencias signifi cativas entre condiciones sanitarias, para contenido de clorofi las y mermas de caracteres de rendimiento cercanas al 90%, donde peso y número de raíces comerciales fueron los más afectados por EA en ambas variedades. Se corrobora la relevancia del EA como limitante del cultivo y del empleo de materiales saneados junto a buenas prácticas de manejo para alcanzar rendimientos potenciales.Virus diseases are the main constraint of sweet potato yield, the fi fth largest food crop. In Argentina, “yellow curling” (EA), a viral complex with seven agents involved, causes notable losses in all the growing regions. The infl uence of EA on yield components of Arapey INIA and Beauregard cultivars was analyzed by comparative trials that combined two health conditions and two genotypes.
Healthy plants were obtained by thermotherapy and in vitro culture of meristems and the diseased ones, by grafting with EA. There were signifi cant differences between health conditions, in chlorophyll content and losses in yield characters near to 90%. Weight and number of commercial roots were the most affected by EA in both cultivars. This work corroborates the relevance of EA on sweet potato production. Virus free plants and good management practices increase greatly the yields.Instituto de Patología VegetalFil: Buxmann, Erik. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Vilanova Perez, Antonella. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Lopez Colomba, Eliana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; ArgentinaFil: Suasnabar, Ramon Rodolfo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Luque, Andres Vicente. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Luque, Andres Vicente. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Araujo Vieira de Souza, J.C. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; ArgentinaFil: Di Feo, Liliana Del Valle. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentin
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
