1,720,955 research outputs found
Controle biológico na cultura do amendoim: o potencial de Trichoderma spp. e fungos entomopatogênicos para o manejo de pragas e doenças
No full textThis doctoral thesis investigated the potential and challenges of using entomopathogenic fungi and Trichoderma in the management of pests and diseases in peanut cultivation. With the aim of providing sustainable and effective tools, either alone or in conjunction with chemical pesticides, this study presents three main approaches. In Chapter II, the use of entomopathogenic fungi, Metarhizium, Beauveria, and Cordyceps, as endophytes in controlling peanut larval pests was investigated. It was found that feeding on plants inoculated with fungi resulted in lower larval growth rates, higher mortality, and lower larval and pupal weights compared to the control, highlighting the potential of these fungi as biological control agents. In Chapter III, the effectiveness of combining Trichoderma with two common fungicides, Chlorothalonil and Difenoconazole, in controlling peanut cercosporiosis was evaluated. The results of this work indicate that the combination of Trichoderma with fungicides provided better disease control and higher plant yields compared to the use of fungicides alone. This finding underscores the value of Trichoderma in peanut disease control and its potential to enhance peanut productivity when used alongside conventional fungicides. Finally, in Chapter IV, the use of Trichoderma in controlling pre-harvest infection of peanuts by Aspergillus flavus was assessed. The application of Trichoderma resulted in lower aflatoxin contamination compared to fungicides, demonstrating its potential role in ensuring food safety and increasing peanut crop productivity. Taken together, the results presented in this thesis highlight the critical role that entomopathogenic fungi and Trichoderma spp. can play in the sustainable management of pests and diseases in peanut cultivation, while also pointing out the challenges that still need to be overcome for the effective implementation of these biological strategies.Esta tese de doutorado investigou o potencial e os desafios do uso de fungos entomopatogênicos e Trichoderma no manejo de pragas e doenças na cultura do amendoim. Com o objetivo de oferecer ferramentas sustentáveis e eficazes em conjunto ou não aos pesticidas químicos, este estudo apresenta três abordagens principais. No Capítulo II, foi investigado o uso de fungos entomopatogênicos, Metarhizium, Beauveria e Cordyceps, como endofíticos no controle de pragas larvais do amendoim. Descobrimos que a alimentação com plantas inoculadas com fungos resulta em uma menor taxa de crescimento larval, maior mortalidade e menores pesos larval e pupal em comparação com o controle, destacando o potencial desses fungos como agentes de controle biológico. No Capítulo III, foi avaliado a a eficácia da combinação de Trichoderma com dois fungicidas comuns, Chlorothalonil e Difenoconazole, no controle das cercosporioses no amendoim. Os resultados desse trabalho indicam que a combinação de Trichoderma com fungicidas proporcionaram um melhor controle de doenças e um rendimento de plantas superior em comparação com o uso isolado dos fungicidas. Este achado destaca o valor do Trichoderma no controle de doenças do amendoim, além de poder aumentar a eficiência da produtividade do amendoim associado aos fungicidas convencionais. Por fim, No Capítulo IV foi avaliado o uso de Trichoderma no controle da infecção pré-colheita de amendoins por Aspergillus flavus. A aplicação de Trichoderma resultou em uma menor contaminação por aflatoxinas comparado aos fungicidas, evidenciando seu potencial papel na garantia da segurança alimentar e aumento da produtividade da cultura do amendoim. Em conjunto, os resultados apresentados nesta tese destacam o papel crítico que os fungos entomopatogênicos e Trichoderma spp. podem desempenhar no manejo sustentável de pragas e doenças na cultura do amendoim, enquanto também apontam para os desafios que ainda precisam ser superados para a implementação eficaz dessas estratégias biológicas.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)00
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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