1,720,955 research outputs found
Supervivencia de Trichoderma atroviride a los tratamientos por termoterapia con agua caliente
No full text[ES] Los hongos de la madera de la vid constituyen uno de los principales problemas de la producción de planta de vid injertada en vivero. La termoterapia con agua caliente se puede utilizar en los viveros de vid para el control de diversos patógenos. En este trabajo se han realizado dos ensayos con Trichoderma atroviride, agente de biocontrol de hongos de la madera, para estudiar la supervivencia de este hongo a tratamientos por termoterapia con agua caliente. Para ello se utilizaron discos de agar con micelio y esporas, o fragmentos de madera inoculada previamente con T. atroviride. En ambos casos los tratamientos fueron de 49, 50, 51, 52 o 53°C durante 30, 45 o 60 minutos. Los resultados mostraron, en el caso de los discos de micelio y esporas, el hongo sobrevivió en el 100% de los tratamientos. En el caso de los fragmentos de madera inoculada, los mejores resultados se obtuvieron a las temperaturas de 49 y 50°C, donde el porcentaje de supervivencia superó el 85% para cualquier tiempo de exposición.[EN] Fungal grapevine trunk pathogens constitute one of the main problems of the production of grafted grapevine plants in nurseries. Thermotherapy with hot water can be used in grapevine nurseries to control various pathogens. In this work, two trials were conducted with Trichoderma atroviride, a biocontrol agent of fungal grapevine trunk pathogens, to study the survival of this fungus in hot water treatments. For this purpose, discs of agar with mycelium and spores, or fragments of wood previously inoculated with T. atroviride were used. In both cases, the treatments were 49, 50, 51, 52 or 53 ° C for 30, 45 or 60 minutes. The results showed, in the case of mycelial discs and spores, that the fungus survived in 100% of the treatments. In the case of the fragments of inoculated wood, the best results were obtained at temperatures of 49 and 50° C, where the percentage of survival exceeded 85% at any exposure time.Añón Albenca, VJ. (2018). Supervivencia de Trichoderma atroviride a los tratamientos por termoterapia con agua caliente. https://riunet.upv.es/handle/10251/109085TFG
Ensayo de control biológico de hongos de la madera de la vid en vivero
No full text[ES] Los hongos de la madera de la vid constituyen uno de los principales
problemas de la producción de planta de vid injertada en vivero. En este
trabajo se ha realizado un estudio de control biológico con Trichoderma
atroviride para el control de estas enfermedades. El tratamiento se aplicó
en vivero en diferentes momentos durante el proceso de producción de la
planta injertada. La efectividad del tratamiento se evaluó mediante el
aislamiento de hongos en las plantas tratadas al final del proceso de
enraizamiento en campo, comparándolo con plantas control no tratadas.
Los resultados mostraron que el tratamiento con T. atroviride, aplicado en
el proceso de producción de planta injertada en vivero fue efectivo en la
reducción de la infección causada por hongos de la madera de la vid. Los
mejores resultados se obtuvieron en la reducción de infecciones causadas
por Phaeomoniella chlamydospora y hongos pertenecientes a la familia
Botryosphaeriaceae. También se obtuvo una reducción, aunque algo
menor, de la infección causada por hongos asociados al pie negro y por
Phaeoacremonium minimum.[EN] Grapevine fungal trunk pathogens are one of the main problems for
the production of grafted grapevines in nurseries. In this study, a
Trichoderma atroviride treatment, for the control of these diseases, was
evaluated. The treatment was applied in the nursery at different steps
during the nursery process to produce grafted plants. The efectiveness of
the treatment was determined by performing fungal isolation from
treated plants that was compared with untreated control plants. The
results showed that T. atroviride treatment applied at the nursery
production process of grafted plants was effective in reducing infections
caused by fungal trunk pathogens. The best results were obtained for the
reduction of infections caused by Phaeomoniella chlamydospora and fungi
belonging to the family Botryosphaeriaceae. Also, a reduction, although
somewhat smaller, of fungal infections caused by black foot pathogens
and Phaeoacremonium minimum was noticed.Añón Albenca, VJ. (2016). Ensayo de control biológico de hongos de la madera de la vid en vivero. https://riunet.upv.es/handle/10251/72376.TFG
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
- …
