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    Wyświetlanie 1-5 z 5
    Tytuł:
    Chlorophyll Content of Aphid-Infested Seedling Leaves of Fifteen Maize Genotypes
    Autorzy:
    Sytykiewicz, H.
    Czerniewicz, P.
    Sprawka, I.
    Krzyzanowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/19588.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2013, 55, 2
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of phenolics from woody plants on activity of grain aphid oxidases
    Autorzy:
    Chrzanowski, G.
    Leszczynski, B.
    Sempruch, C.
    Sytykiewicz, H.
    Sprawka, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/54949.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    sour cherry
    walnut
    peroxidase
    leaf
    woody plant
    biopesticide
    phenolics
    plant pest
    polyphenol oxidase
    grain aphid
    black currant
    aphid
    Opis:
    Changes in activity of the grain aphid peroxidase (Px) and polyphenol oxidase (PPO) towards phenolics isolated from leaves of black currant, sour cherry and walnut were examined. Slight increase in activity of peroxidase was found within insect tissues after 24 h of walnut extract treatment, whereas black currant and sour cherry strongly inhibited activity of this enzyme. Later on, the walnut extract reduced activity of the enzyme, finally about 30%. The other extracts showed slight changes in Px activity. The grain aphid’s polyphenol oxidase was stimulated during the first 24 h of the experiment. Further treatment with the phenolics extracts reduced activity of the grain aphid polyphenol oxidase. Generally, phenolics isolated from the black currant and sour cherry were more effective in reducing activity of the aphid peroxidase, whereas phenolics from walnut reduced the polyphenol oxidase activity. Possible application of the phenolics isolated from the woody plants as modern biopesticides towards the grain aphid is discussed.
    Źródło:
    Pestycydy; 2009, 1-4; 63-70
    0208-8703
    Pojawia się w:
    Pestycydy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molecular screening for Bartonella henselae and Borrelia burgdorferi sensu lato co-existence within Ixodes ricinus populations in central and eastern parts of Poland
    Autorzy:
    Sytykiewicz, H.
    Karbowiak, G.
    Werszko, J.
    Czerniewicz, P.
    Sprawka, I.
    Mitrus, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/50132.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    The presented study aimed at establishing the prevalence and co-infection rates of Bartonella henselae and Borrelia burgdorferi sensu lato in Ixodes ricinus ticks collected from the central and eastern parts of Poland. The common tick individuals were gathered in the years 2008-2009. Questing ticks were sampled by dragging a white woollen flag over lower vegetation at 17 localities within diverse types of habitats: urban recreational green areas (city parks and squares), suburban forests and rural woodlands throughout the investigated regions of Poland. Detection of B. henselae in tested tick specimens was based on PCR amplification of the citrate synthase (gltA) gene, while screening for the presence of B. burgdorferi s.l. DNA was carried out by analyzing fragments of two genes: the flagellin (fla) and outer surface protein A (ospA). A total number of 1,571 I. ricinus ticks were sampled: 865 (55.1%) nymphs, 377 females (24.0%) and 329 males (20.9%). The application of PCR assays revealed that 76 (4.8%) tick samples were B. henselae-positive, B. burgdorferi s.l. DNA was detected in 194 specimens (12.3%), whereas the co-existence of these pathogens was evidenced in 22 tested ticks (1.4%). Furthermore, the occurrence of bartonellae and co-circulation of analysed microorganisms in I. ricinus was affirmed only within adult individuals, while presence of the screened spirochetes was ascertained in both nymphal and adult ticks. It should be stressed that the suburban woods of Warsaw and rural forests in Warsaw County characterized the highest prevalence levels of dual infection with investigated tick-borne pathogens, whereas the lowest co-infection rates were recorded in tick populations inhabiting rural forests in Płock County and forested areas in Korczew-Mogielnica (within the Nadbużański Landscape Park).
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2012, 19, 3
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molecular evidence of Anaplasma phagocytophilum and Babesia microti co-infections in Ixodes ricinus ticks in central-eastern region of Poland
    Autorzy:
    Sytykiewicz, H.
    Karbowiak, G.
    Hapunik, J.
    Szpechcinski, A.
    Supergan-Marwicz, M.
    Golawska, S.
    Sprawka, I.
    Czerniewicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/50011.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    The aim of the study was to elucidate the distribution of Anaplasma phagocytophilum and Babesia microti co-infection in Ixodes ricinus populations within the central-eastern region of Poland. The prevalence of analysed tick-borne human pathogens in single and polymicrobial infections in I. ricinus ticks were analysed using the conventional and nested PCR techniques. A total number of 1,123 questing tick individuals (291 females, 267 males and 565 nymphs) were collected at different ecosystems (municipal parks, suburban forests, and woodlands). In the presented study, 95 samples of ticks (8.5%) were infected with A. phagocytophilum, 3.1% (n=35) with B. microti, whereas the co-existence status of these human pathogens was detected in 1.8% (n=20) of all tested samples. It has been demonstrated that the prevalence of co-infection status was the highest among females of I. ricinus (11 samples, 3.8%), whereas the lowest within tested nymphs (5 samples, 0.9%). Ticks collected at city parks in Warsaw and suburban areas of this town characterized the highest prevalence of co-infections (3.3 and 4.8%, respectively). Furthermore, it was established that co-infection rates of ticks inhabiting woodlands within Kampinos National Park and Nadbużański Landscape Park were similar and reached the levels of 1.4% (n=5) and 1.1% (n=4), respectively.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2012, 19, 1
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza dynamiki wsadu podczas topienia indukcyjnego w warunkach lewitacji
    Stability analysis of dynamic charge in levitational melting processes
    Autorzy:
    Ostrowski, P.
    Sprawka, P.
    Krysowaty, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/251840.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Naukowo-Wydawniczy TTS
    Tematy:
    wzbudnik
    indukcyjne topnienie lewitacyjne
    metal
    stop metalu
    inductor
    melting levitation
    metal alloy
    Opis:
    Artykuł porusza aspekty indukcyjnego topnienia lewitacyjnego metali i stopów w warunkach wysokiej czystości. Autorzy wskazują na zagadnienia zapewnienia stabilności dynamicznej wsadu wewnątrz wzbudnika w obecności zakłóceń sieci oraz na etapie załadunku wsadu. Podjęte rozważania są niezwykle istotne w procesie projektowania konstrukcji wzbudnika, by zapewnić wystarczający zapas stabilności dynamicznej w praktycznym wykorzystaniu tegoż wzbudnika.
    The article introduces analysis of the dynamic stability of charge in levitational melting regarding many kinds of disturbance during process. The mathematical model of the dynamics was introduced, numeric computational algorithm enabling the mathematical analysis of movement of the charge inside inductor was passed
    Źródło:
    TTS Technika Transportu Szynowego; 2016, 12; 479-483
    1232-3829
    2543-5728
    Pojawia się w:
    TTS Technika Transportu Szynowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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