50,678 research outputs found
In vitro effectiveness of difenoconazole against Itersonilia perplexans Derx
No full textLeaf blight caused by Itersonilia perplexans Derx is commonly observed on dill (Anethum graveolens L.) at the crop maturity stage. In the fields of southern Italy, I. perplexans attacks begin in late autumn, when the weather is cool and humid. In laboratory, the fungal growth rate was maximum at 20 °C, the ballistoconidia production was null at temperatures of 25 °C or higher, and growth was interrupted at 30 °C or above. It is difficult to manage the disease because very few fungicides are admitted for use on dill. Therefore, we screened in vitro several fungicides for their toxicity against I. perplexans, and discovered the high effectiveness of difenoconazole, with EC 50 and EC 95 of 0.5 and 0.95 μg mL −1 , respectively, both for mycelium growth and ballistoconidia production. Ciprodinil+fludioxonil, azoxystrobin (both with EC 50 = 0.69 μg mL −1 ) and boscalid (EC 50 = 7.32 μg mL −1 ) were toxic to I. perplexans, but did not suppress completely the pathogen even at doses of 10,000 μg mL −1 . Mancozeb+metalaxil showed EC 50 of 15.5 μg mL −1 and completely suppressed the fungus at 100 μg mL −1 . Copper oxychloride was toxic only at doses higher than 100 μg mL −1 , and sulphur did not affect the pathogen growth. Therefore, difenoconazole is worthy of further evaluations in the field for the control of leaf blight of dill caused by I. perplexans
Metabarcoding analysis of <i>Phytophthora</i> diversity using genus-specific primers and 454 pyrosequencing
No full textA metabarcoding method based on genus-specific primers and 454 pyrosequencing was utilized to investigate the genetic diversity of Phytophthora spp. in soil and root samples of potted plants, from eight nurseries. Pyrosequencing enabled the detection of 25 Phytophthora phylotypes distributed in seven different clades and provided a much higher resolution than a corresponding cloning/Sanger sequencing approach. Eleven of these phylotypes, including P. cactorum, P. citricola s.str., P. palmivora, P. palmivora-like, P. megasperma or P. gonapodyides, P. ramorum, and five putative new Phytophthora species phylogenetically related to clades 1, 2, 4, 6, and 7 were detected only with the 454 pyrosequencing approach. We also found an additional 18 novel records of a phylotype in a particular nursery that were not detected with cloning/Sanger sequencing. Several aspects confirmed the reliability of the method: (i) many identical sequence types were identified independently in different nurseries, (ii) most sequence types identified with 454 pyrosequencing were identical to those from the cloning/Sanger sequencing approach and/or perfectly matched GenBank deposited sequences, and (iii) the divergence noted between sequence types of putative new Phytophthora species and all other detected sequences was sufficient to rule out sequencing errors. The proposed method represents a powerful tool to study Phytophthora diversity providing that particular attention is paid to the analysis of 454 pyrosequencing raw read sequences and to the identification of sequence types.</p
Modulation of endometrial redox balance during the menstrual cycle: relation with sex hormones.
No full textMorphological, molecular and biological approaches to characterize citrus-associated Alternaria species.
No full texta Morfological, molecular and biological characterization of Alternaria specie associated with Citrus fruit was conducte
Speculu[m] exemploru[m] ex diuersis libris in vnu[m] laboriose collectu[m].
No full textEerste blad (blanco) ontbreektThe author is probably Johannes Busch (CIBN)Titel uit incipit. Drukker en datum uit colofonBMC: Catalogue of books printed in the XVth century now in the British Museum I 226bGesamtkatalog der Wiegendrucke ; M42951Machiels, J. Catalogus van de boeken gedrukt vóór 1600 ; S 488Polain, M.-L. Catalogue des livres imprimé au 15e siècle ... ; 3574Europeana-GoogleBook
The long-wavelength view of GG Tau A: rocks in the ring world
No full textWe present the first detection of GG Tau A at centimetre wavelengths, made with the Arcminute Microkelvin Imager Large Array at a frequency of 16 GHz (λ = 1.8 cm). The source is detected at >6 σrms with an integrated flux density of S16GHz = 249 ± 45 µJy. We use these new centimetre-wave data, in conjunction with additional measurements compiled from the literature, to investigate the long-wavelength tail of the dust emission from this unusual protoplanetary system. We use an MCMC-based method to determine maximum likelihood parameters for a simple parametric spectral model and consider the opacity and mass of the dust contributing to the microwave emission. We derive a dust mass of Md ~ 0.1 Msun, constrain the dimensions of the emitting region and find that the opacity index at λ > 7 mm is less than unity, implying a contribution to the dust population from grains exceeding ~4 cm in size. We suggest that this indicates coagulation within the GG Tau A system has proceeded to the point where dust grains have grown to the size of small rocks with dimensions of a few centimetres. Considering the relatively young age of the GG Tau association in combination with the low derived disc mass, we suggest that this system may provide a useful test case for rapid core accretion planet formation models
Formation of Literary Image of I. M. Muravyov-Apostol
No full textThe formation of the literary image of Ivan Matveyevich Muravyov-Apostol is discussed, who entered the history of Russian literature as the author of a journalistic series “Letters from Moscow to Nizhny Novgorod” and “The Journey in Tauris in 1820.” It is noted that I. M. Muravyov-Apostol is famous for being “a scholar and lover of antiquity.” The author of the article explores the translation activity of I. M. Muravyov-Apostol, his enthusiasm for the work of the Roman poet Horace. It is shown how the translations of satirical works and odes of Horace by Muravyov-Apostol influenced the formation of his literary interests and, accordingly, the creation of the literary image of the writer. The critical works devoted to the translation activity of Muravyov-Apostol are considered. The role of friendship is noted between the writer and G. R. Derzhavin with whom they were united by similar attitude to the literary and civil issues, as well as interest in ancient culture and translation of satirical works and odic poetry of Horace. Excerpts from their correspondence are given, as well as opinions of other writers about the creative activities of Muravyov-Apostol. The author concludes that special influence on the formation of Muravyov-Apostol’s literary image had self-presentation of his translations at meetings of the society “Beseda lyubiteley russkogo slova.
Long-term wind-driven X-ray spectral variability of NGC 1365 with Swift
No full textWe present long-term (months–years) X-ray spectral variability of the Seyfert 1.8 galaxy NGC 1365 as observed by Swift, which provides well-sampled observations over a much longer time-scale (six years) and a much larger flux range than is afforded by other observatories. At very low luminosities, the spectrum is very soft, becoming rapidly harder as the luminosity increases and then, above a particular luminosity, softening again. At a given flux level, the scatter in hardness ratio is not very large, meaning that the spectral shape is largely determined by the luminosity. The spectra were therefore summed in luminosity bins and fitted with a variety of models. The best-fitting model consists of two power laws, one unabsorbed and another, more luminous, which is absorbed. In this model, we find a range of intrinsic 0.5–10.0 keV luminosities of approximately 1.1–3.5 erg s?1, and a very large range of absorbing columns, of approximately 1022–1024 cm?2. Interestingly, we find that the absorbing column decreases with increasing luminosity, but that this result is not due to changes in ionization. We suggest that these observations might be interpreted in terms of a wind model in which the launch radius varies as a function of ionizing flux and disc temperature and therefore moves out with increasing accretion rate, i.e. increasing X-ray luminosity. Thus, depending on the inclination angle of the disc relative to the observer, the absorbing column may decrease as the accretion rate goes up. The weaker, unabsorbed, component may be a scattered component from the wind
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Col·laboradores de la Fundació Bernat Metge: Anna M. de Saavedra i Adela M. Trepat, traductores d'Ovidi
No full textAquest article s'inscriu en el Grup d'Estudi de la Traducció Catalana Contemporània (GETCC) (2009, SGR 1294), reconegut i finançat per l'Agència de Gestió i Ajuts Universitaris de la Generalitat de Catalunya, i en el projecte "La traducción en el sistema literario catalán; exilio, género e ideología (1939-2000)", amb el número de referència FFI2010-19851-C02-01, finançat pel Ministerio de Ciencia e Innovación.En la primera etapa de la seva existència, entre el 1923 i el final de la guerra civil, la Fundació Bernat Metge només va comptar amb dues col·laboradores femenines: les llatinistes Anna M. de Saavedra i Adela M. Trepat. La seva aportació conjunta es va limitar a un únic autor, Ovidi, del qual van publicar les Heroides en 1927 i Les metamorfosis en tres volums entre 1930 i 1932. De la mà de Joaquim Balcells i de Carles Riba van establir el text llatí i van girar l'autor més erudit de l'antiguitat llatina. Una anàlisi de les correccions i de les reformulacions de Riba ens descobreix els criteris fabrians que aplicà el corrector i la important aportació de les traduccions al sistema literari català i a la fixació de la llengua.In the whole of its earlier period, from 1923 to the end of the Spanish Civil War, the Bernat Metge Foundation had only two female collaborators: the Latinists Anna M. de Saavedra and Adela M. Trepat. Their joint contribution was restricted to one author, Ovid, of whom they published the Heroides in 1927 and the Metamorphoses, in 3 volums, between 1930 and 1932. With the assistance of Joaquim Balcells and Carles Riba they established the Latin text and translated this most erudite of Latin authors. An analysis of Riba's emendations and alternative solutions reveals the Fabrian linguistic criteria he applied and the significant contribution translations made to the creation of modern literary Catalan
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