picogram

The new estimate would raise the danger level to one tenth of a picogram.

We could therefore speak of a micromicrogram (or, as it is now called, a picogram).

And every picogram of atmospheric carbon dioxide held three hundred billion of them.

A picogram is a trillionth of a gram.

One picogram equals 978 megabases.

This corresponds to a wet mass of about 1 picogram (pg), assuming that the cell consists mostly of water.

Using the pico- picogram, we find that it takes the conversion of 1950 picopicograms of mass to produce an erg of energy.

The other estimates ranged from one-tenth of a picogram by other Federal agencies to 10 picograms a day by Canadian scientists.

It is a very potent stimulant of the immune system, activating cells (for example, monocytes or macrophages) at picogram per milliliter quantities.

In the detection of ethyl glucuronide, or EtG, testing can detect amounts in picograms (one picogram equals 0.001 nanograms).

The E.P.A.'s old risk threshold for dioxin was six thousandths of a picogram, a picogram being one trillionth of a gram.

It also clashes with that of the non-SI unit, the attotonne, but that unit would be more likely be rendered as the equivalent SI unit, the picogram.

Some low abundance proteins may be present in picogram (pg/mL) quantities, while high abundance proteins can be present in milligram (mg/mL) quantities.

Detection of mactinin in arthritis fluid Affinity-purified rabbit antiserum raised against a recombinant chicken α-actinin fragment detected picogram amounts of the immunizing amino-terminal protein fragment (Fig.

In its new draft assessment, the agency's scientists estimated that exposure to one-tenth of a picogram per kilogram of body weight per day would produce a cancer risk of one in one million.

An attogram is one-thousandth of a femtogram, which is one-thousandth of a picogram, which is one-thousandth of a nanogram, which is a billionth of a gram.

Its mass can be found by using the formula about the annihilation of an antimatter meteor and simple calculations show that it was around a picogram, well within the size of most meteors that may enter in the atmosphere.

Instead the state proposed an ambient air level standard of 1 picogram per cubic meter, meaning dioxin in the air around a plant cannot exceed 1 picogram per cubic meter.

What was good about the study, Dr. Silbergeld said, was that it acknowledged that dioxin did have an impact on the health of humans and that humans already face a daily "background" exposure averaging one picogram per kilogram of body weight.

The new standards require dioxin levels to be no more than 1 picogram, or one-trillionth of a gram, per cubic meter of air in the state, or no permits for new sources of dioxin, such as trash incineration plants, will be allowed.

Atmospheric concentrations of PCBs tend to be lowest in rural areas, where they are typically in the picogram per cubic meter range, higher in suburban and urban areas, and highest in city centres, where they can reach 1 ng/m3 or more.