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Partes por mil millones (ppb del inglés parts per billion) es una unidad de medida con la que se mide la concentración. Se refiere a la cantidad de unidades de una determinada sustancia (agente, etc.) que hay por cada mil millones de unidades del conjunto.
6 de ene. de 2015 · Parts Per Billion: Directed by Brian Horiuchi. With Frank Langella, Gena Rowlands, Rosario Dawson, Josh Hartnett. In the midst of a manmade biological disaster and a terrible fate, three couples try to find meaning in their lives.
Partes por mil millones (ppb del inglés parts per billion) es una unidad de medida con la que se mide la concentración. Se refiere a la cantidad de unidades de una determinada sustancia (agente, etc.) que hay por cada mil millones de unidades del conjunto.
Parts Per Billion es una película dirigida por Brian Horiuchi con Frank Langella, Gena Rowlands. Sinopsis : Después de una catástrofe biológica que afecta al mundo, tres parejas se verán ...
Parts per Billion is a 2014 American romantic drama written and directed by Brian Horiuchi. It stars an ensemble cast comprising Frank Langella, Gena Rowlands, Rosario Dawson, Penn Badgley, Teresa Palmer, and Josh Hartnett as three loosely connected couples who must deal with a looming biological attack.
Related concentration units are parts per thousand (ppth), parts per million (ppm) and parts per billion (ppb). Parts per thousand is defined as follows: \[ppth\: =\: \frac{mass\: of\: solute}{mass\: of\: sample}\times 1000\]
One part per billion (ppb) denotes one part per 1,000,000,000 (10 9) parts, and a value of 10 −9. This is equivalent to about three seconds out of a century. One part per trillion (ppt) denotes one part per 1,000,000,000,000 (10 12) parts, and a value of 10 −12. This is equivalent to about thirty seconds out of every million years.
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