Estimates of heavy-duty diesel fine-particulate emission factors based on chassis dynamometer measurements showed only a 43% decline over the 1975−1986 period, not a 91%reductionn.
Most primary headaches are episodic, and most estimates of the heavy disability burden attributed to headache derive from epidemiological data focused on the episodic subtypes of migraine and tension-type headache (TTH).
Thus, for these polydisperse fluids, continuous thermodynamic approach with distribution functions is widely used to estimate properties of heavy end, also known as plus fraction.
Presently conventional light oil reserves are diminishing globally in the face of rising global energy demand, with large estimated reserve of heavy crude oil and tar sands worldwide, the petroleum industries are turning to heavy oil as an alternative potential of energy source.
For comparison with the scale-up and generalized scale-up estimates, we estimated the number of heavy drug users using 2 common methods: direct estimation and the multiplier method (12).
In addition to this previous estimate, we also estimated the number of heavy drug users in Curitiba using 2 standard methods: the multiplier method and the direct estimation method (12).
When comparing the different approaches it is obvious that – as expected – the use of only one sample considerably underestimates the total prevalence in this population, but that estimates for prevalence of heavy infections and geometric mean intensity are quite similar.
The pirates quickly learned, though, that their booty was an estimated $30 million worth of heavy weaponry, heading for Kenya or Sudan, depending on whom you ask.
On March 29, an Exxon Mobil pipeline burst near the Northwoods subdivision, spilling an estimated 210,000 gallons of heavy Canadian crude, coating a residential street with oil.
