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Wyszukujesz frazę "light effect" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-8 z 8
    Tytuł:
    De-etiolation of cucumber cotyledons under different light sources: effect of nitric oxide
    Autorzy:
    Bargareche, C.
    Rebula, D.
    Moysset, L.
    Simon, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/80365.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    Cucumis sativus
    cucumber
    cotyledon
    light source
    nitric oxide
    photosynthetic pigment content
    chlorophyll fluorescence
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of light emitting diodes on the growth and development of Gerbera jamesonii ‘Dura’ in in vitro cultures
    Autorzy:
    Pawlowska, B.
    Zupnik, M.
    Szewczyk-Taranek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/951227.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    light emitting diode
    horticulture
    lighting
    Gerbera jamesonii
    in vitro propagation
    growth
    plant development
    plant reaction
    photosynthetic response
    light quality
    photoperiod
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of temperature, light and calcium carbonate on seed germination and radicle growth of the polycarpic perennal Galium cracoviense (Rubiaceae), a narrow endemic species from southern Poland
    Autorzy:
    Kolodziejek, J.
    Patykowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/19472.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Germination responses of Galium cracoviense Ehrend. (Rubiaceae), a narrow endemic species from southern Poland, were tested in light and dark conditions at three constant temperatures (5, 10, or 22°C), before and after cold-wet stratification. Additionally, seeds were germinated under different calcium carbonate (CaCO3) concentrations (1, 5, 10, 15, 20, or 25 mM/L CaCO3) at 22°C in light. The high germination capacity of seeds incubated at different temperatures, shortly after collection, already suggested the absence of dormancy in this species. Thus, the seeds are ready to germinate immediately in the field when water resources are available and the temperature is adequate. Light was a significant factor for G. cracoviense; more seeds germinated in light than in darkness at all temperatures tested. Cold stratification decreased germination especially at higher temperatures. The light requirement for G. cracoviense germination ensures their successful germination on or near the soil surface, and in cracks and crevices in limestone, when temperature and edaphic conditions are favourable. Seeds of this species show temperature enforced dormancy throughout the winter. Germination was significantly affected by calcium carbonate. Non-germinated seeds germinated well after being transferred from higher CaCO3 concentrations to distilled water. The results indicate that the seeds of this species can endure CaCO3 stress without losing their viability and start germination once CaCO3 concentration is reduced. It can be concluded that the seeds of this species require lower Ca2+ ion concentration, moderate temperatures and the presence of light to germinate.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2015, 57, 1
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigating the effect of the number of end-panel studs on the seismic properties of cold-formed light-steel shear-panel braces
    Autorzy:
    Tafti, M. R. J.
    Behnamfar, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/230627.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    stal formowana na zimno
    rama stalowa lekka
    usztywnienie na ścinanie
    wytrzymałość boczna
    współczynnik modyfikacji odpowiedzi
    cold-formed steel
    light steel frame
    shear-panel bracing
    lateral performance
    response modification factor
    Opis:
    Detailed investigation of the effect of the number of end-panel studs on the seismic properties of light-steel shear-panel braces in cold-formed steel frames and in particular the associated response modification coefficients (R) factor, are presented in this paper. A total of 6 full-scale 1200×2400 mm specimens are considered, and the responses investigated under a standard cyclic loading regime. Of particular interest are the specimens’ maximum lateral load capacity and deformation behavior as well as a rational estimation of the seismic response modification factor. The study also looks at the failure modes of the system and investigates the main factors contributing to the ductile response of the tested shear-panel braces in order to suggest improvements so that braces respond plastically with a significant drift and without any risk of brittle failure, such as connection failure or stud buckling.
    Źródło:
    Archives of Civil Engineering; 2013, 59, 2; 197-214
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of turbiscan lab to study the effect of emulsifier content on the stability of plant origin dispersion
    Autorzy:
    Zalewska, Anna
    Kowalik, Joanna
    Grubecki, Ireneusz
    Powiązania:
    https://bibliotekanauki.pl/articles/185345.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    emulsion
    polysorbate 80
    backscattered light
    droplet size
    stability
    emulsja
    polisorbat 80
    rozproszone światło
    rozmiar kropli
    stabilność
    Opis:
    The effect of emulsifier volume on emulsion system stability of plant origin being the basis of diet supplements for animals in winter season was analyzed. For this purpose, measurements of the backscattered light intensity as the function of the measuring cell height were conducted with a Turbiscan LAB optical analyzer. System stability was analyzed on the basis of Turbiscan Stability Index values. A Helos laser analyzer and a Nikon Eclipse E400 POL optical microscope were used to investigate drop size distribution and analyze microscopic pictures. It was shown that emulsion with 10% (w/w) of the emulsifier was the most stable one.
    Źródło:
    Chemical and Process Engineering; 2019, 40, 4; 399--409
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Pyrolysis Conditions on the Physicochemical Properties of Graphitic Carbon Nitride for Visible-Light-Driven Photocatalytic Degradation
    Autorzy:
    Kim, Jeong Hyun
    Ji, Myeongjun
    Ryu, Cheol-Hui
    Lee, Young-In
    Powiązania:
    https://bibliotekanauki.pl/articles/351503.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    g-C3N4
    pyrolysis
    polymerization
    synthesis condition
    photocatalysis
    Opis:
    Graphitic carbon nitride (g-C3 N4 ) is an attractive photocatalyst, however, its practical photocatalytic applications are still faced with huge challenges. The aim of this research is to identify the correlation between synthetic conditions and properties of the g-C3 N4 and derive an optimum synthesis condition for improving photocatalytic activities of the g-C3 N4. In this study, novel and versatile g-C3 N4 nanosheets were synthesized by the simple thermal pyrolysis of urea. In the synthesis process, the pyrolysis temperature and the heating rate, which can have the most significant influence on the structures and properties of g-C3 N4, were set as variables, and the effects were systematically investigated. When synthesized at a relatively high temperature, the amount of material being synthesized is reduced, however it has been found to represent optical properties suitable for highly efficient photo-catalyst by the increase in the thickness and defects formed in the g-C3 N4nanosheets. The photocatalytic degradation experiment of MB dyes indicated that the highest degradation of 95.2% after the reaction for 120 min was achieved on the g-C3 N4 nanosheets synthesized at 650°C.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 3; 1111-1116
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of LED lighting on some antioxidants parameters in lambs lettuce
    Autorzy:
    Kolton, A.
    Wojciechowska, R.
    Dlugosz-Grochowska, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/80123.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    light emitting diode
    lighting
    sodium lamp
    antioxidant parameter
    reactive oxygen species
    lamb
    lettuce
    catalase activity
    peroxidase activity
    phenolic compound
    ascorbic acid
    radical scavenging activity
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Metallic Additives to Polymer Matrix on Properties of Composite Adhesives Dedicated for Light Metal Joining
    Autorzy:
    Mamala, A.
    Kwaśniewski, P.
    Nowak, A.
    Grzebinoga, J.
    Ściężor, W.
    Kowal, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/353945.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    polymer-metal composites
    thermal conductivity
    epoxy matrix adhesives
    reinforcement with particles of non-ferrous metals
    Opis:
    The most recent and promising trends in development of renewable sources of energy are Combined Heat and Power (CHP) systems. The newest solutions from this field are hybrid compact solar panels. The correct operation of both systems, i.e. the photovoltaic panel and the heat exchanger requires an effective connection between the two. The adhesives utilized to interconnect above elements should provide a stable and hermetic joint able to withstand mechanical and thermal impacts of the surrounding environment factors. The paper presents the research results over the impact of the type and the amount of reinforcing phase on the physical and mechanical properties of epoxy resin matrix composites reinforced with particles of non-ferrous metals (Ag, Cu, W, Al), dedicated as adhesives for connections between photovoltaic panels and heat exchangers. Based on the experimental findings the usefulness of classical analytic models for valuation of polymer-metal composites properties was validated.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 4; 2287-2294
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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