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Wyszukujesz frazę "Chmielowska, M." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    NADPH oxidase is involved in regulation of gene expression and ROS overproduction in soybean (Glycine max L.) seedlings exposed to cadmium
    Autorzy:
    Chmielowska-Bak, J.
    Arasimowicz-Jelonek, M.
    Izbianska, K.
    Frontasyeva, M.
    Zinicovscaia, I.
    Guiance-Varela, C.
    Deckert, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/58633.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    Cadmium-induced oxidative burst is partially mediated by NADPH oxidase. The aim of the present research was to evaluate the role of NADPH oxidase in soybeans’ response to short-term cadmium stress. The application of an NADPH oxidase inhibitor, diphenyleneiodonium chloride (DPI), affected expression of two Cd-inducible genes, encoding DOF1 and MYBZ2 transcription factors. This effect was observed after 3 h of treatment. Interestingly, Cd-dependent increases in NADPH oxidase activity occurred only after a period of time ranging from 6 and 24 h of stress. Stimulation of the enzyme correlated in time with a significant accumulation of reactive oxygen species (ROS). Further analysis revealed that pharmacological inhibition of NADPH oxidase activity during 24 h of Cd stress does not affect Cd uptake, seedling growth, or the level of lipid peroxidation. The role of NADPH oxidase in the response of soybean seedlings to short-term Cd exposure is discussed.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2017, 86, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tough sprouting - impact of cadmium on physiological state and germination rate of soybean seeds
    Autorzy:
    Chmielowska-Bak, J.
    Holubek, R.
    Frontasyeva, M.
    Zinicovscala, I.
    Isidogru, S.
    Deckert, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2130694.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    metal stress
    antioxidants
    cell viability
    lipid peroxidation
    Opis:
    Seed germination is the earliest process in plant development and is crucial for further plant growth and fitness. The process is regulated by various internal and external factors, including soil pollutants such as nonessential metals. In the present study, we examined in detail the impact of short-term imbibition in Cd solutions at several concentrations (5, 10, and 25 mg/L) on germination rate and physiological state of soybean seeds. The results showed that although Cd was readily absorbed by the seeds, the metal had no effect on seeds cell viability, oxidative stress intensity, or germination percentage. In contrast, imbibition in Cd solution led to slight reduction in antioxidant capacity of seeds. Seedlings grown from seeds pretreated with metal showed no differences in growth in relation to the control. Taken together, the results indicate that soybean seeds are relatively tolerant even to high Cd concentration (up to 25 mg/L).
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2020, 89, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uszkodzenia środowiska leśnego w wyniku turystyki i rekreacji
    Damage to the forest environment as a result of tourism and recreation
    Autorzy:
    Dudek, T.
    Szkutnik, P.
    Bilek, M.
    Olbrycht, T.
    Chmielowska, K.
    Dziuba, M.
    Czerniakowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/979229.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    turystyka
    rekreacja
    turystyka piesza
    lasy
    presja turystyczna
    szlaki piesze
    szlaki turystyczne
    uszkodzenia gleby
    oddziaływanie na środowisko
    uszkodzenia roślin
    forest recreation
    leisure time
    tourist pressure
    tourist trail
    Opis:
    The purpose of the paper was to determine the impact of the most popular form of recreation and tourism (i.e. walking) on the environment in selected forests that were made available by the means of educational trails. The research was carried out in south−eastern Poland, in the forest reserves Bór (RB) and Polanki (RP) as well as in the economic forests of the Kołaczyce (NK) and Brzozów (NB) forest districts. A 1−km−long transect was established on both sides along each educational trail with control points determined every 10 m. In total 200 points were distinguished and data on the degree of soil damage was collected at research plots with an area of 1 m2 each. Based on these 200 plots, damage of young trees and soil were measured. The studies indicate that the damage to the soil and trees in the immediate vicinity of the routes available for recreation and tourism are very large. In all objects, 53−99% of the soil surface and 28−56% of trees were damaged. Slightly damaged soil earned the highest fraction on all studied trails (for NK it was 62%, RB – 49%, RP – 35.5% and NB – 26.5%). The most severe soil damage (packed soil) was recorded in as many as 37% of the measurement points in RB, 9.5% in RP and NB and 7% in NK. The most common form of damage to the trees was bark rub without damaging the pulp or partial damage to the needles or leaves. In case of NK, such damage was observed in 41% of trees, while 30.4% of RB, NB in 20.9% and RP in 13.9%. Trees ranked as the 2 most severe degrees of damage accounted for as much as 9.2% in NK, while 7.2% of RP, 6.4% in RB and 5.6% in NB. The damage level of the examined components of the forest environment determined in the study as a result of tourist and recreational use should be considered as high.
    Źródło:
    Sylwan; 2020, 164, 02; 170-176
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of Pulsed Current-Voltage Characteristics of AlGaN/GaN HEMTs from Room Temperature to~15~K
    Autorzy:
    Laurent, T.
    Sharma, R.
    Torres, J.
    Nouvel, P.
    Blin, S.
    Palermo, C.
    Varani, L.
    Cordier, Y.
    Chmielowska, M.
    Faurie,, J.
    Beaumont, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1505650.pdf
    Data publikacji:
    2011-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    72.80.Ey
    73.21.Fg
    73.40.-c
    Opis:
    We report measurements of the pulsed and dc current-voltage characteristics of AlGaN/GaN high-electron-mobility transistors as functions of geometry, temperature (from 300 down to 15 K), and operating conditions. An increase in the drain current with shortening of the pulse width from 1 μs to 400 ns is found to be significant at room temperature whilst this behavior is inverted or even removed at 77 and 15 K temperatures.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 2; 196-198
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Voltage Controlled Terahertz Transmission Enhancement through GaN Quantum Wells
    Autorzy:
    Laurent, T.
    Sharma, R.
    Torres, J.
    Nouvel, P.
    Blin, S.
    Chusseau, L.
    Palermo, C.
    Varani, L.
    Cordier, Y.
    Chmielowska, M.
    Faurie, J.
    Beaumont, B.
    Shiktorov, P.
    Starikov, E.
    Gruzinskis, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1505459.pdf
    Data publikacji:
    2011-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.20.-e
    78.67.De
    73.21.Fg
    Opis:
    We report transmission measurements of GaN quantum well grown on sapphire substrate in the 220-325 GHz frequency band at low temperatures. A significant enhancement of the transmitted beam intensity with the applied voltage on the devices under test is found.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 2; 107-110
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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