"Historically, possessing a North Carolina license means you can drive safely on our roads, period," Mr. Hurder added.
When data were split into two different time periods, the estimated effect associated with PM2.5 10 was higher during November through May, the road dust period, consistent with recent findings reported for PM2.5 10 and PM10 that indicated stronger associations during springtime (Zanobetti and Schwartz 2009; Zeka et al. 2006).
And Bolland points to the recovery in womenswear, saying sales in this crucial area have risen in the last quarter in like-for-like terms (a key measure of performance) 11.16am BST Chairman Robert Swannell insists that M&S's rebuilding job is near the end of the road: "Our period of heavy lifting in making the required improvements to the infrastructure of M&S is coming to an end...
The moisture content of the crushed aggregates changes due to rainfalls and water infiltration from the pavement cracks during the road service period, and this usually brings detrimental effects to the performance of road base and subbase.
A strength of the present study is that PM2.5 10 during the road dust period originates from the road network covering the whole city, not from a few point sources.
We estimated a 1.7% increase in daily mortality per 10-μg/m increase in lag01 PM2.5 10, both for the whole year and during November through May, the high road dust period.
For PM2.5 10, 148 days with a daily mean concentration of 20 μg/m (95th percentile) or higher were observed within the road dust period, but only 4 days outside that season.
The average number of deaths per day for the road dust period (November through May) was 29.6 (range, 13 52), and for the reference season (June through October) was 26.8 (range, 12 50).
Continuous monitors measured slightly lower concentrations of elemental carbon and nitrogen dioxide during road closure periods at monitors proximate to closed highway segments, but not for PM2.5 or further from major highways.
