Sentences with phrase «in ozone exposure»

Scientists suggest that the size difference is primarily due to differences in ozone exposure.

Not exact matches

In 2004, Looy and her former Ph.D. advisor Henk Visscher proposed one way this might have played out, bases on fossilized abnormal plant spores found worldwide: volcanic gases — halocarbons like methyl chloride and methyl bromide — destroyed much or all of Earth's ozone layer, boosting UV - B exposure that would have affected life and potentially increased the genetic mutation rates in pollen and spores of plants worldwidIn 2004, Looy and her former Ph.D. advisor Henk Visscher proposed one way this might have played out, bases on fossilized abnormal plant spores found worldwide: volcanic gases — halocarbons like methyl chloride and methyl bromide — destroyed much or all of Earth's ozone layer, boosting UV - B exposure that would have affected life and potentially increased the genetic mutation rates in pollen and spores of plants worldwidin pollen and spores of plants worldwide.

In some parts of Asia, Africa and South America, the researchers identified data gaps which prevented them from characterizing ozone pollution exposure patterns.

However, limited and scattered ozone datasets left scientists unable to answer basic questions about the distribution and trends in ozone pollution in many parts of the world: In which regions of the world do people face the greatest ozone exposurin ozone pollution in many parts of the world: In which regions of the world do people face the greatest ozone exposurin many parts of the world: In which regions of the world do people face the greatest ozone exposurIn which regions of the world do people face the greatest ozone exposure?

So Weschler and Wisthaler simulated a typical office environment at the Technical University of Denmark in Copenhagen — two people in a carpeted 28.5 — cubic meter room at a temperature of 23 degrees Celsius with two small stainless steel tables, two chairs, two flat - screen LCD monitors, two headsets, one walkie - talkie, one small mixing fan, a few books, two laptops, two bottles of water and ozone concentrations that reached roughly 32 parts per billion, an average exposure for a hot, smoggy day.

While elevated ozone did decrease the Phl p 5 allergen content in pollen, «the strong CO2 - stimulation of pollen production suggests increased exposure to Timothy grass allergen overall,» even if O3 projections are realized, the authors note.

A new study of 60 million Americans — about 97 % of people age 65 and older in the United States — shows that long - term exposure to airborne fine particulate matter (PM2.5) and ozone increases the risk of premature death, even when that exposure is at levels below the National Ambient Air Quality Standards (NAAQS) currently established by the U.S. Environmental Protection Agency.

Specifically, a 4 ug / m3 increase in exposure to small particulate matter of less than 2.5 in diameter (PM2.5) was associated with a 2 % increased risk of stillbirth, while exposure to nitrogen dioxide, carbon monoxide, PM10 and ozone were also linked to a heightened risk.

«EPA acknowledges the newer studies on ozone «do not materially change any of the broad scientific conclusions regarding the health effects of exposure,»» the group said in a statement.

In this section, we consider the population within a 5 km radius around a TOAR ozone monitoring station; hereafter referred to as the «monitored population», and estimate their exposure in terms of exceedances of one metric: NDGT6In this section, we consider the population within a 5 km radius around a TOAR ozone monitoring station; hereafter referred to as the «monitored population», and estimate their exposure in terms of exceedances of one metric: NDGT6in terms of exceedances of one metric: NDGT60.

These findings further suggest reduced exposure to high levels of ozone in parts of North America and Europe, but increased exposure to moderate to high ozone levels at a small proportion of urban locations, although many sites in these two regions have non-significant trends.

As noted above, the first three metrics are associated with regulatory standards in different world regions for the protection of human health to acute or short - term exposure to ozone.

This shift, coupled with limited ozone monitoring in most developing nations, has left a number of fundamental outstanding questions: Which regions of the world have the greatest human and plant exposure to ozone pollution?

Plants and animals have adapted to the normal seasonal cycle of total ozone and UV and are not used to high UV - exposure during the part of their lifecycle that takes place in spring (e.g. germination, growths of buds, algea blooms in the Arctic ocean,...).

Long - term exposure to high levels of road traffic and ozone significantly increases the risk of asthma symptoms, asthma attacks or the need for use of asthma medications, according to a new study published in the European Respiratory Journal [1].

In a cooperative effort between Duke and Duke Kunshan University, researchers found higher exposure to ground - level ozone led to higher blood pressure and blood platelet activation — risk factors for cardiovascular health.

This outcome is important to researchers as well as policymakers and regulators, who use exposure metrics to assess how changes in ozone levels affect human health, vegetation, and climate.

The remnants of the vortex — which contain the depleted ozone — typically pass overhead at about 45 to 50 degrees north latitude, over parts of Europe and North America, for a few days in spring, causing the potential for ultraviolet (UV) radiation exposure to increase, said Rex.

Plants and animals have adapted to the normal seasonal cycle of total ozone and UV and are not used to high UV - exposure during the part of their lifecycle that takes place in spring (e.g. germination, growths of buds, algea blooms in the Arctic ocean,...).

The response of leaf photosynthesis and metabolite profiles to ozone (O3) exposure ranging from 37 to 116 ppb was investigated in two soybean cultivars Dwight and IA3010 in the field...

Another recent paper in Nature Climate Change makes the point vividly: Bumping ambition up from 2 to 1.5 degrees would prevent 150 million premature deaths through 2100, 90 million through reduced exposure to particulates, 60 million due to reduced ozone.