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    Wyświetlanie 1-3 z 3
    Tytuł:
    The impact of Trifender WP on the content of chlorogenic acids in potato plants infected by Phytophthora infestans (Mont.) de Bar
    Autorzy:
    Głosek-Sobieraj, M.
    Cwalina-Ambroziak, B.
    Waśkiewicz, A.
    Kubiaczyk, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/12267269.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    potato plant
    petiole
    plant infection
    infected plant
    plant pathogen
    Phytophthora infestans
    Trichoderma asperellum
    Trifender WP preparation
    chlorogenic acid
    chlorogenic acid content
    Opis:
    Five potato cultivars were grown in a micro-plot field experiment (under conditions of natural infection by pathogens). In experimental treatments, potatoes were treated with Trifender WP, whereas control plants were not treated with growth regulators. A greenhouse experiment, conducted simultaneously, involved three treatments: 1. control (no biostimulant treatment, no inoculation), 2. inoculation (potato plants inoculated with P. infestans), 3. Trifender WP+inoculation (soil and foliar application of Trifender WP followed by inoculation with the pathogen 2 days after the last treatment). The research material was potato petioles, in which changes in the concentration of analyzed chlorogenic acids were determined using the Waters Acquity UPLC technique. In comparison with the control treatment, higher concentrations of the 5-caffeoylquinic acid (5-CQA), 4-caffeoylquinic acid (4-CQA) and 3-caffeoylquinic acid (3-CQA) were found in potatoes treated with Trifender WP, and in cultivars with blue-purple and red-colored flesh than in those with yellow and cream-colored flesh (field experiment). In the greenhouse experiment, the content of individual chlorogenic acids increased in the petioles of potatoes inoculated with P. infestans and inoculated with the pathogen after the application of Trifender WP, compared with the control treatment.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 217-227
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Selected Melting Parameters on the Physical and Chemical Properties of Cast Iron
    Autorzy:
    Petrus, Ł.
    Bulanowski, A.
    Kołakowski, J.
    Brzeżański, M.
    Urbanowicz, M.
    Sobieraj, J.
    Matuszkiewicz, G.
    Szwalbe, L.
    Janerka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/381477.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gray cast iron
    ductile cast iron
    thermal analysis
    DTA
    cast iron properties
    holding time
    temperature
    overheating temperature
    żeliwo szare
    żeliwo sferoidalne
    analiza termiczna
    właściwości żeliwa
    temperatura
    temperatura przegrzania
    Opis:
    This paper presents the problems related to smelting gray and ductile cast iron. Special attention is paid to the metallurgical quality of cast iron. It depends on the type of furnace, charge materials and the special combination of charge, overheating and holding temperature, melting time, modification and spheroidization method. The evaluation of metallurgical quality has been performed by using derivative-thermal analysis (DTA). During the smelting process and secondary metallurgy, the ITACA system was used allowing to obtain information on alloy characteristic temperatures (Tliquidus, TeMin, TeMax, Tsolidus), VPS value, recalescence value, IGQ coefficient, nucleation gauge, porosity etc. The results of investigations and calculations are displayed in the form of graphs and dependencies. It has been shown that the derivative-thermal analysis (DTA) is an effective complement of chemical analysis and it has been found that both the increase in temperature and metal holding time have a negative impact on the metallurgical quality of liquid metal. The metallurgical quality can be improved by using proper composition of charge materials and modifiers.
    Źródło:
    Archives of Foundry Engineering; 2020, 20, 1; 105-110
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Impact of Composition and the Densification Level of Furan Molding Compounds on the Strength of Large-Size Casting Molds
    Autorzy:
    Petrus, Ł.
    Bulanowski, A.
    Kołakowski, J.
    Urbanowicz, M.
    Sobieraj, J.
    Jelonek, M.
    Brzeżański, M.
    Zych, J. S.
    Janerka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/356951.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    molding sand
    adhesive
    densification
    properties molding sand
    Opis:
    The paper presents the test results of molding compounds, sand casting molds and their analysis. The subject of testing was compound containing furan resins prepared according to the following recipe: matrix – regenerate 90% + fresh sand – 10%, furanresin – 1.10% by weight, hardener – 0.40% by weight. The impact of adhesive type and its quantity (Quan = 0.90, 1.1 and 1.5%) on the strength indexes of molding compound subject to densification was analyzed. The publication presents the test results: tensile strength Rm, compressive strength Rc and flexural strength Rg, as well as compound permeability as function of its density. The analysis also covers the impact of density level on mold strength and the distribution of density level along the mold height. Based on the test results, it was found that the best method to obtain high strength molds made from compounds with chemical adhesives was to densify it by vibrating the system: match plate – molding flask – compound filling the mold. The effectiveness of this densification method depends on the amplitude and frequency of vibrations.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 4; 1431-1436
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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