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Wyszukujesz frazę "Rossi, G. V." wg kryterium: Autor

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Experimental Analysis of a Directive Antenna with a 3D-EBG Superstrate
    Autorzy:
    Pajewski, L.
    Frezza, F.
    Marciniak, M.
    Piuzzi, E.
    Rossi, G. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/307787.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    directivity enhancement
    electromagnetic bandgap materials
    Fabry-Perot cavities
    periodic structures
    woodpile
    Opis:
    A three-dimensional electromagnetic crystal is employed as a directivity-enhancing superstrate for planar antennas. The crystal is a woodpile made of alumina rods. In a shielded anechoic chamber, the performance of a patch antenna covered with the woodpile is measured. The superstrate is positioned at different distances from the antenna and its orientation is varied in the 8–12 GHz frequency range. The return loss, gain and radiation pattern in the E- and H-planes are measured. The electromagnetic behavior of Fabry-Perot cavities with woodpile mirrors, equivalent to the compound radiator, is also studied. The main effect of the crystal on the antenna performance is an enhancement of about 10 dB in maximum gain. A rather complete series of experiments is presented, highlighting the role of the periodic structure in the directivity enhancement and allowing a deeper understanding of the electromagnetic phenomena involved in EBG resonator antennas. Benefits and disadvantages of this kind of antennas are discussed and ideas for future research are given.
    Źródło:
    Journal of Telecommunications and Information Technology; 2017, 3; 113-124
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tests on the effect of ultrasonic treatment on two different activated sludge waste
    Autorzy:
    Simonetti, M.
    Rossi, G.
    Cabbai, V.
    Goi, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/207290.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    anaerobic digestion
    nitrogen compounds
    wastewater treatment
    biogas production
    pulp and paper wastewater
    ultrasonic treatment
    waste activated sludges
    ultradźwięki
    fermentacja beztlenowa
    związki azotu
    oczyszczanie ścieków
    produkcja biogazu
    ścieki celulozowo-papiernicze
    obróbka ultradźwiękami
    osady ściekowe
    Opis:
    The effect of ultrasonic treatment on two different waste activated sludges (WASI and WAS2) was compared by batch tests. WASI was taken from an industrial WWTP that treats pulp and paper wastewater, WAS2 was obtained from a traditional municipal WWTP. Physical and chemical characterization of sludges and supernatants was performed at various specific energy inputs. Upon increasing specific energy input, sludge structure changed, particle size decreased and organic and nitrogen release increased. A different release of organic matter and nitrogen compound related to the sludge origin was observed. The study is a preliminary assay of the potential of sonication treatment to enhance biogas production in anaerobic digestion.
    Źródło:
    Environment Protection Engineering; 2014, 40, 1; 23-34
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dry and Wet Heat Transfer Through Clothing Dependent on the Clothing Properties Under Cold Conditions
    Autorzy:
    Richards, M. G. M.
    Rossi, R.
    Meinander, H.
    Broede, P.
    Candas, V.
    Hartog den, E.
    Holmer, I.
    Nocker, W.
    Havenith, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/90562.pdf
    Data publikacji:
    2008
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    heat transfer
    moisture
    condensation
    wet conduction
    clothing systems
    Opis:
    The purpose of this study was to investigate the effect of moisture on the heat transfer through clothing in relation to the water vapour resistance, type of underwear, location of the moisture and climate. This forms part of the work performed for work package 2 of the European Union THERMPROTECT project. Thermal manikin results of dry and wet heat loss are presented from different laboratories for a range of 2-layer clothing with similar dry insulations but different water vapour permeabilities and absorptive properties. The results obtained from the different manikins are generally consistent with one another. For each climate, total wet heat loss is predominately dependent on the permeability of the outer layer. At 10 °C, the apparent evaporative heat loss is markedly higher than expected from evaporation alone (measured at 34 °C), which is attributed to condensation within the clothing and to increased conductivity of the wet clothing layers.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2008, 14, 1; 69-76
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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