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Wyszukujesz frazę "Pędziwiatr, P." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Aquaculture waste management
    Autorzy:
    Pędziwiatr, P.
    Zawadzki, D.
    Michalska, K
    Powiązania:
    https://bibliotekanauki.pl/articles/105740.pdf
    Data publikacji:
    2017
    Wydawca:
    Centrum Badań i Innowacji Pro-Akademia
    Tematy:
    fish waste uses
    fish waste management
    biogas
    collagen
    chitosan
    wykorzystanie odpadów rybnych
    zarządzanie odpadami rybnymi
    biogaz
    kolagen
    chitozan
    Opis:
    Fish and seafood production has grown steadily in the past five decades. Total world fisheries and aquaculture production reached 167.2 million tonnes in 2014 [1]. Intensive fish production triggers growth in the amount of waste processing, which has serious environmental impacts. Utilization and energy recovery from fish waste have become areas of interest for the global economy. Specialized methods and techniques have been developed to acquire biomethane, biodiesel and biofertilizer from fish biomass. Also, using physical, biochemical and thermochemical processes, relevant substances (such as fish protein hydrolysate, natural pigments, chitosan and collagen) can be obtained.
    Źródło:
    Acta Innovations; 2017, 22; 20-29
    2300-5599
    Pojawia się w:
    Acta Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A novel microbial fuel cell with exchangable membrane - application of additive manufacturing technology for device fabrication
    Autorzy:
    Zawadzki, D.
    Pędziwiatr, P.
    Michalska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/105862.pdf
    Data publikacji:
    2018
    Wydawca:
    Centrum Badań i Innowacji Pro-Akademia
    Tematy:
    microbial fuel cell
    microorganisms
    exchangeable membrane
    bioelectricity
    additive manufacturing
    mikrobiologiczne ogniwo paliwowe
    mikroorganizmy
    wymienna membrana
    bioelektryczność
    addytywne wytwarzanie
    Opis:
    Research about exploitation the potential of waste and sludge increased drastically in the recent years. One of the most promising alternative methods of waste management is Microbial Fuel Cell (MFC), which generate clean bio-electricity using microorganisms. Organic compounds, sewage, municipal solid waste could be used as a source for microbial nutrition. The construction of MFC is one of the most important parameter in laboratory studies and during scale-up. The efficiency of MFC depends on many factors including type of membrane. To obtain optimization in terms of various operating conditions, a prototype of Microbial Fuel Cell with exchangeable membrane was projected and fabricated by additive manufacturing (AM) technology. This novel device allows to research effects of different types of separator membranes. Preliminary research showed possibility to produce 3D printed MFC systems.
    Źródło:
    Acta Innovations; 2018, 28; 20-31
    2300-5599
    Pojawia się w:
    Acta Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decomposition of hydrogen perodixe - kinetics and review of chosen catalysts
    Autorzy:
    Pędziwiatr, P.
    Mikołajczyk, F.
    Zawadzki, D.
    Mikołajczyk, K.
    Bedka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/105966.pdf
    Data publikacji:
    2018
    Wydawca:
    Centrum Badań i Innowacji Pro-Akademia
    Tematy:
    decomposition
    hydrogen peroxide
    catalysis
    catalysts
    silver catalyst
    photocatalysis
    dekompozycja
    nadtlenek wodoru
    kataliza
    katalizatory srebrowe
    fotokataliza
    Opis:
    Hydrogen peroxide is a chemical used in oxidation reactions, treatment of various inorganic and organic pollutants, bleaching processes in pulp, paper and textile industries and for various disinfection applications. It is a monopropellant, which, when purified, is self-decomposing at high temperatures or when a catalyst is present. Decomposing to yield only oxygen and water(disproportionation), hydrogen peroxide is one of the cleanest, most versatile chemicals available. The catalytic decomposition of hydrogen peroxide allows the use of various catalysts that will increase the rate of decomposition. Comparison and description of the most commonly used catalysts were presented in this review.
    Źródło:
    Acta Innovations; 2018, 26; 45-52
    2300-5599
    Pojawia się w:
    Acta Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Search for canted spin arrangement in Er2-xTbxFe14B with Mössbauer spectroscopy
    Autorzy:
    Kurzydło, P. M.
    Bogacz, B. F.
    Pędziwiatr, A. T.
    Oleszak, D.
    Przewoźnik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/147036.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    Mössbauer effect
    permanent magnet materials
    spin diagrams
    spin reorientation
    Opis:
    The materials studied were polycrystalline compounds Er2-xTbxFe14B (x = 0.1, 0.2, 0.3, 0.4) which crystallize in a tetragonal lattice and display a variety of spin arrangements. The compounds have been measured with 57Fe Mössbauer spectroscopy over the temperature range 80–320 K in order to investigate the spin reorientation processes. Each compound was studied in a wide temperature range, with precise Mössbauer scanning in the vicinity of the transition. The set of spectra obtained for a given compound was analyzed using simultaneous fi tting procedure to investigate the infl uence of the transition on the shape of the spectra. The fi tting program was specifi ed to analyze the transition according to the ‘two state model’: spins fl ip abruptly from initial angle to fi nal arrangement (90° angle). Obtained results suggest that spin reorientation process cannot be described using only the mentioned above model. Additional computer simulations based on the Yamada–Kato model were conducted to determine temperature range and the type of spin alignments in the vicinity of the transition. These theoretical results supported by spectra analysis suggest the existence of intermediate (canted) spin arrangements in the studied compounds. The spin arrangement diagram was constructed.
    Źródło:
    Nukleonika; 2015, 60, 1; 93-96
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spin reorientation process in Tm2–xHoxFe14B : analysis of conical arrangement based on Mössbauer spectra
    Autorzy:
    Kurzydło, P. M.
    Pędziwiatr, A. T.
    Bogacz, B. F.
    Przewoźnik, J.
    Oleszak, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/148120.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    permanent magnetic materials
    Mössbauer effect
    spin reorientation
    spin diagrams
    Opis:
    The spin reorientation process in the Tm2–xHoxFe14B series of compounds was studied using 57Fe Mössbauer spectroscopy over the temperature range 5.2–320 K with a focus on the analysis of conical spin arrangement. Each compound was studied by precise Mössbauer scanning in the vicinity of the transition and during the transition. By applying computer simulations based on the simplified Yamada-Kato model, as well as on some literature data for R2Fe14B (R = Tm, Ho) compounds, the above series was selected for studies as it contains compounds with different spin arrangements (axial, planar, conical). It was a crucial requirement for obtaining unambiguous angular dependences when applying a simultaneous fitting procedure of Mössbauer spectra. Such an extended procedure was applied which allowed the temperature dependence of the angle describing the position of the magnetization vector to be obtained. The results were compared with those from theoretical simulations. The spin arrangement diagram was constructed. A conical spin arrangement was confirmed over a wide temperature range.
    Źródło:
    Nukleonika; 2017, 62, 2; 123-127
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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