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  1. Vor 14 Stunden · Neglecting electrical inefficiency, the antenna gain is equal to the directive gain, which is 1.5 dBd (1.76 dBi) for a short dipole, increasing to 1.64 dBd (2.15 dBi) for a half-wave dipole. For a 5 / 4 wave dipole the gain further increases to about 5.2 dBi, making this length desirable for that reason even though the antenna is then off-resonance.

  2. en.wikipedia.org › wiki › ChromiumChromium - Wikipedia

    Vor 14 Stunden · The more toxic hexavalent chromium form can be reduced to the less soluble trivalent oxidation state in soils by organic matter, ferrous iron, sulfides, and other reducing agents, with the rates of such reduction being faster under more acidic conditions than under more alkaline ones. In contrast, trivalent chromium can be oxidized to hexavalent chromium in soils by manganese oxides, such as ...

    • silvery metallic
    • group 6