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Wyszukujesz frazę "Castro, D. A." wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Naphthalic anhydride increases tolerance of common bean to herbicides
    Autorzy:
    Krenchinski, F.H.
    Batista de Castro, E.
    Cesto, V.J.S.
    Belapart, D.
    Rodrigues, D.M.
    Carbonari, C.A.
    Velini, E.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084688.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electron transport
    Phaseolus vulgaris
    protection
    safeners
    Opis:
    The aim of this work was to evaluate the use of the naphthalic anhydride safener on the protection of common bean cultivars BRS-Estilo (carioca) and BRS-Esplendor (black) from negative effects of herbicides. Two experiments were conducted, one for each cultivar in a complete randomized design with five replications, in a 6 × 3 factorial scheme, with six herbicide treatments: bentazon, fluazifop-P + fomesafen, bentazon + imazamox, fomesafen, cloransulam, and control without application, and three naphthalic anhydride treatments: without application, foliar application, and application via seed treatment. Visible injuries at 7, 14 and 21 days after application, photosystem II electron transport rate, and plant dry weight were evaluated. The naphthalic anhydride applied via foliar, and seed treatment reduced significantly the visible injuries in relation to the control when using the herbicides bentazon, fluazifop-P + fomesafen, bentazon + imazamox, and cloransulam. The photosystem II electron transport rate was protected by anhydride applied via foliar and seed treatment when using the herbicides bentazon, fluazifop-P + fomesafen and bentazon + + imazamox. The application of naphthalic anhydride via seed treatment protected the BRS-Estilo and BRS-Esplendor common bean cultivars, with no reductions in the plant dry weight when using the herbicides fluazifop-P + fomesafen, and fomesafen. The use of naphthalic anhydride via seed treatment and foliar application protected BRS-Estilo and BRSEsplendor common bean cultivars, from the negative effects of fluazifop-P + fomesafen and fomesafen herbicides. Thus, this practice has potential to be used in common beans.
    Źródło:
    Journal of Plant Protection Research; 2019, 59, 3; 383-391
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Image Retrieval Based on Text and Visual Content Using Neural Networks
    Autorzy:
    Castro, D. A.
    Seijas, L. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/108732.pdf
    Data publikacji:
    2010
    Wydawca:
    Społeczna Akademia Nauk w Łodzi
    Tematy:
    image retrieval
    Self-Organizing Maps (SOM)
    content-based image retrieval (CBIR)
    Text-Based Image Retrieval (TBIR)
    ParBSOM
    Scoring function
    Opis:
    In the last few years there has been a dramatic increase in the amount of visual data to be searched and retrieved. Typically, images are described by their textual content (TBIR) or by their visual features (CBIR). However, these approaches still present many problems. The hybrid approach was recently introduced, combining both characteristics to improve the benefits of using text and visual content separately. In this work we examine the use of the Self Organizing Maps for content-based image indexing and retrieval. We propose a scoring function which eliminates irrelevant images from the results and we also introduce a SOM variant (ParBSOM) that reduces training and retrieval times. The application of these techniques to the hybrid approach improved computational results.
    Źródło:
    Journal of Applied Computer Science Methods; 2010, 2 No. 1; 21-39
    1689-9636
    Pojawia się w:
    Journal of Applied Computer Science Methods
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Attachment of 2,2-bipyridine onto a silica gel for application as a sequestering agent for copper, cadmium and lead ions from an aqueous medium
    Autorzy:
    Souza, E. J.
    Cristante, V. M.
    Padilha, P. M.
    Jorge, S. M. A.
    Martines, M. A. U.
    Silva, R. I. V.
    Carmo, D. R.
    Castro, G. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/779827.pdf
    Data publikacji:
    2011
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    2,2-bipirydyna
    żel krzemionkowy
    adsorpcja
    jony metali
    2,2'-bipyridine
    silica gel
    adsorption
    metal ions
    Opis:
    A method was developed to attach 2,2-bipyridine (BP) onto a silica gel surface by a two-step reaction. The fi rst step consisted of a reaction between the matrix and a silylating agent, 3-chloropropyltrimethoxysilane. In the second step of the reaction, a ligand molecule was attached onto Si-CPTS, yielding the product Si-BP. The modified material contained 0.431±0.01 mmol of 2,2-bipyridine per gram of modified silica, as confirmed by FT-IR spectra of the proposed structure. The surface modification was characterized by the BET technique, which revealed a decrease in the surface area from 614 to 450 m2 g-1. The series of adsorption isotherms for the metal ions were adjusted to fit a modified Langmuir equation. The maximum number of moles of copper, cadmium and lead ions adsorbed was 0.64, 0.53, and 0.54 mmol g-1, respectively. The surface saturation was calculated as ¢ fraction and the values obtained, Cu(II) =1.160, Cd(II) = 1.044 and Pb(II) = 0.997, suggest a type 1:1 metal-ligand complex.
    Źródło:
    Polish Journal of Chemical Technology; 2011, 13, 4; 28-33
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    4-amine-2-mercaptopyrimidine modified silica gel applied in Cd(II) and Pb(II) extraction from an aqueous medium
    Autorzy:
    Pereira, A.S.
    Ferreira, G.
    Caetano, L.
    Castro, R.S.D.
    dos Santos, A.
    Padilha, P.M.
    Castro, G.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/778413.pdf
    Data publikacji:
    2010
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    4-amino-2-merkaptopirymidyna
    krzemionka
    ekstrakcja metali
    środowisko wodne
    4-amine-2-mercaptopyrimidine
    silica
    metal extraction
    aqueous medium
    Opis:
    This paper discusses silica surface modification by a process involving a two-step reaction: anchoring of a silylating agent, followed by an attachment of a 4-amino-2-mercaptopyrimidine molecule. The modified material (Si-BP) was successfully characterized by the FTIR spectra, which revealed amine absorption bands, and through 13C and 29Si NMR spectra, which confirm the proposed structure of the modified silica (Si-BP). Si-BP was used to extract cadmium and lead from an aqueous medium at 298 K. The Si-BP kinetics towards metal ions was very fast, i.e., about 10 minutes, although extraction was significantly impaired at pH 3. The series of adsorption isotherms were adjusted to a modified Langmuir equation and the maximum extraction capacity was 0.193 and 0.387 mmol g-1 for Cd(II) and Pb(II), respectively. An analysis of the Ř values lead to the inference that the resulting metal ligand complex was type 1:1.
    Źródło:
    Polish Journal of Chemical Technology; 2010, 12, 1; 7-11
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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