1,720,968 research outputs found
Distribution and molecular characterization of the viruses SCYLV, SCMV in Saccharum sp. and PRSV-P in Carica papaya in Cuba
Full text linkEntre las enfermedades más importantes en Saccharum sp., se destacan sugarcane yellow leaf virus (SCYLV) y sugarcane mosaic virus (SCMV). En Carica papaya L., papaya ringspot virus (PRSV-P) causa una de las enfermedades más destructivas. El objetivo de esta investigación fue determinar la distribución en Cuba de estos virus y su caracterización molecular. Se realizaron prospecciones y diagnóstico molecular mediante RT-PCR. En el caso de SCMV se realizó secuenciación directa. Se realizaron análisis filodinámicos con 34 secuencias de aislados cubanos de PRSV-P y 107 secuencias de aislados del continente americano e islas del Caribe. SCYLV y PRSV-P se encuentran ampliamente distribuidos en Cuba. De SCYLV se informa la existencia de las razas BRA-PER, CUB y REU, y de SCMV una sola raza. Los aislados cubanos de PRSV-P y del continente americano e islas del Caribe mostraron un ancestro común. SCYLV y PRSV-P constituyen un peligro potencial para los agricultores.Among the most important diseases in Saccharum spp., sugarcane yellow leaf virus (SCYLV) and sugarcane mosaic virus (SCMV) stand out. In Carica papaya L., papaya ringspot virus (PRSV-P) causes one of the most destructive diseases. The objective of this research was to determine the distribution in Cuba of these viruses and their molecular characterization. Prospecting and molecular diagnosis were carried out by RT-PCR. In the case of SCMV, direct sequencing was performed. Phylodynamic analyzes were performed with 34 sequences from Cuban PRSV-P isolates and 107 sequences from isolates from the American continent and Caribbean islands. SCYLV and PRSV-P are widely distributed in Cuba. From SCYLV the existence of the races BRA-PER, CUB and REU was reported, and from SCMV a single race. The Cuban isolates of PRSV-P and from the American continent and Caribbean islands showed a common ancestor. SCYLV and PRSV-P constitute a potential hazard to farmers.Instituto de Patología VegetalFil: Aday-Díaz, Osmany. Instituto de Investigaciones de la Caña de Azúcar; CubaFil: Puchades Izaguirre, Yaquelin. Instituto de Investigaciones de la Caña de Azúcar; CubaFil: Cabrera Mederos, Dariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); ArgentinaFil: Cabrera Mederos, Dariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: González Ramírez, José Efraín. Instituto de Investigaciones de Viandas Tropicales. Departamento de Virología de Plantas; CubaFil: Portal, Orelvis. Universidad Central “Marta Abreu” de Las Villas. Centro de Investigaciones Agropecuarias. Facultad de Ciencias Agropecuarias; CubaFil: Portal, Orelvis. Universidad Central “Marta Abreu” de Las Villas. Facultad de Ciencias Agropecuarias. Departamento de Biología; Cub
Distribution in Cuba and Molecular Characterization of the virus SCYLV, SCMV in Saccharum sp. and PRSV-P in Carica Papaya
No full textEntre las enfermedades más importantes en Saccharum sp., se destacan sugarcane yellow leaf virus (SCYLV) y sugarcane mosaic virus (SCMV). En Carica papaya L., papaya ringspot virus (PRSV-P) causa una de las enfermedades más destructivas. El objetivo de esta investigación fue determinar la distribución en Cuba de estos virus y su caracterización molecular. Se realizaron prospecciones y diagnóstico molecular mediante RT-PCR. En el caso de SCMV se realizó secuenciación directa. Se realizaron análisis filodinámicos con 34 secuencias de aislados cubanos de PRSV-P y 107 secuencias de aislados del continente americano e islas del Caribe. SCYLV y PRSV-P se encuentran ampliamente distribuidos en Cuba. De SCYLV se informan la existencia de las razas BRA-PER, CUB y REU, y de SCMV una sola raza. Los aislados cubanos de PRSVP y del continente americano e islas del Caribe mostraron un ancestro común. SCYLV y PRSV-P constituyen un peligro potencial para los agricultores.Fil: Aday Díaz, Osmany. Instituto de Investigaciones de la Caña de Azúcar; CubaFil: Puchades Izaguirre, Yaquelin. Instituto de Investigaciones de la Caña de Azúcar; CubaFil: Cabrera Mederos, Dariel. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigaciones Agropecuarias. Instituto de Patología Vegetal; Argentina. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigaciones Agropecuarias. Unidad de Fitopatologia y Modelizacion Agricola. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Unidad de Fitopatologia y Modelizacion Agricola.; ArgentinaFil: González Ramírez, José Efraín. Instituto de Investigaciones de Viandas Tropicales; CubaFil: Portal, Orelvis. Universidad Central “Marta Abreu” de Las Villas; Cuba1er Simposio Internacional Protección de PlantasEl CarmenEcuadorUniversidad Técnica de Ambato. Facultad de Ciencias AgropecuariasCentro de Gestión Internacional de Capacitación y Postgrad
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
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