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  2. Bioconcentration - Wikipedia

    en.wikipedia.org/wiki/Bioconcentration

    [15] k 1 is the rate constant for chemical uptake from water at the respiratory surface (L*kg −1 *d −1). [15] C WD is the chemical concentration dissolved in water (g*L −1 ). [ 15 ] k 2 ,k E ,k G ,k B are rate constants that represent excretion from the organism from the respiratory surface, fecal excretion, metabolic transformation, and ...

  3. Tris(pentafluorophenyl)borane - Wikipedia

    en.wikipedia.org/wiki/Tris(pentafluorophenyl)borane

    Tris (pentafluorophenyl)borane, sometimes referred to as "BCF", is the chemical compound (C6F5)3B. It is a white, volatile solid. The molecule consists of three pentafluorophenyl groups attached in a "paddle-wheel" manner to a central boron atom; the BC3 core is planar. It has been described as the “ideal Lewis acid ” because of its high ...

  4. Bromochlorodifluoromethane - Wikipedia

    en.wikipedia.org/wiki/Bromochlorodifluoromethane

    Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]

  5. 1:144 scale - Wikipedia

    en.wikipedia.org/wiki/1:144_scale

    1:144 scale is a scale used for some scale models such as micro/mini armor. 1:144 means that the dimensions of the model are 1/144 (0.00694) the dimensions of the original life-sized object; this equates to a scale of 1/2 inch per 6 feet of original dimension. For instance, an airplane 30 feet (9.14 m) in length would be a mere 2.5 inches (63.5 ...

  6. Positronium - Wikipedia

    en.wikipedia.org/wiki/Positronium

    The triplet states, 3 S 1, with parallel spins (S = 1, M s = −1, 0, 1) are known as ortho-positronium (o-Ps), and have an energy that is approximately 0.001 eV higher than the singlet. [1] These states have a mean lifetime of 142.05 ± 0.02 ns , [ 2 ] and the leading decay is three gammas.

  7. Volume correction factor - Wikipedia

    en.wikipedia.org/wiki/Volume_Correction_Factor

    In thermodynamics, the Volume Correction Factor (VCF), also known as Correction for the effect of Temperature on Liquid (CTL), is a standardized computed factor used to correct for the thermal expansion of fluids, primarily, liquid hydrocarbons at various temperatures and densities. [1] It is typically a number between 0 and 2, rounded to five ...

  8. Bombardier BiLevel Coach - Wikipedia

    en.wikipedia.org/wiki/Bombardier_BiLevel_Coach

    The BiLevel Coach is a bilevel passenger railcar currently built by Alstom and previously by Bombardier, Hawker Siddeley Canada, the Canadian Car and Foundry (Can Car), and the UTDC. Used by North American commuter rail operators, they hold 360 passengers [citation needed] s and feature a distinctive octagonal profile.

  9. Bombardier Recreational Products - Wikipedia

    en.wikipedia.org/wiki/Bombardier_Recreational...

    Bombardier Inc., was founded in 1942 as L'Auto-Neige Bombardier Limitée (Bombardier Snowmobile Limited) by Joseph-Armand Bombardier at Valcourt in the Eastern Townships, Quebec. As of October 6, 2009, BRP had about 5,500 employees; [3] its revenues in 2007 were above US$2.5 billion. BRP has manufacturing facilities in Canada, the United States ...