Ozone 'Chat Room' Provides Real-Time Air-Quality Research
...s EPA ponders tougher standards for both ozone and particulate matter later this summer. "There is a two-fold revolution at work in the OTAG operation," says Husar, a veteran EPA consultant on acid rain and haze research. "For one, it has changed EPA's emphasis from command-control to consensus-building. Thro...Even Moderate Air Pollution Reaching Eastern Wilderness Decreases Mountain Hikers' Lung Function
...s of ozone and other air pollutants,including fine particulate matter and suspended acid droplets, on the lungfunction of 530 nonsmokers hiking on New Hampshire's Mount Washington during two summers. When ozone went up slightly,lung function decreased, the researchers said. The hikers ranged from 18 t...EPA Should Redirect Some Research on Toxic Airborne Particles
...ichealth." EPA recently set stricter standards for particulate matter -- a broad class ofmaterials that originate...hensive 13-year national program for the study of particulate matter, with emphasis on critical information neededbefore the next scheduled review of the standard......romagnetic radiation - X-rays and gamma rays - and particulate radiation - high-speed particles like electrons, protons, neutrons, and atomic nuclei. Low-energy radiation can be stopped by a spacecraft wall, but at higher energies the wall helps produce showers of secondary radiation, like splinters from a wall ...New Research: Children Inhale Higher Percentage Of Pollution
...rvations byothers about children being affected by particulate air pollution," said Dr.William D. Bennett, research associate professor of medicine at the UNC-CHSchool of Medicine's Center for Environmental Medicine and Lung Biology. "Certainly it doesn't tell the whole story of why children tend to get sick thi...Penn State Engineers Develop New Simulation For Ultrafine Particle Growth Process
... "We haven't yet applied the simulation to other particulate materials.However, it could potentially be done for any powder of interest, powdered milk,for example. The simulation could also be used to model the formation andbehavior of aerosols, sol/gel particle producing systems or even aggregates ofpollutant...Spray Forming Aerospace Alloys For Bigger Aircraft
...formed component via a spray cone. Adding ceramic particulate (5-15micrometer Silicon Carbide) converts the alloy coating to form a metal matrixcomposite. The process is particularly advantageous in manufacturing certaincomponents such as engine rings and engine casings where the process can, insome instances, ...African dust called a major factor affecting southeast U.S. air quality
...f North American inputs. The EPA's PM (for particulate matter) standard is based on the totalmass of particles measuring 2.5 microns or less that may be observed in a 24hour period. Particles of this size can penetrate deep into the lung, where theyare deposited and react with lung tissue. The standard d...Particulate matter causing air pollution
...onth todetermine the best ways to measure the fine particulate matter that is pollutingthe nation's air, particul...o measure the concentration andcomposition of fine particulate matter in the atmosphere and the types ofinstruments best suited to do that," said Dr. William Chame...Smog impacts: Hurtling through airways, tiny particles may do more damage than previously assumed
...f an apparentcorrelation between concentrations of particulate matter and data on peoplegetting sick and dying. B...eded to identify the precise mechanismsinvolved in particulate toxicity." To model fine particles moving through airways, the researchers analyzed datafrom clinica...Agency awards $8.2 million to study how air pollution affects us
...age. The center will study fine particles, particulate matter under 2.5microns in size, known as PM2.5. I...horage, Alaska, wheredifferent kinds and levels of particulate matter are found in the air. "Investigators will look at associations between daily air poll...On the floor of the sea: USGS biologists search for rare, white abalone
...olding vats for the abalone, asubmerged biofilter, particulate filter, chiller, UV sterilizer, an aerationsystem and a packed column for oxygenation and degassing. The systems, said McCormick, are also equipped with an alarm should any of thelife-support systems fail. Determining breeding will be just the start,...Large air pollution center established at NYU School of Medicine
...e each year. The tiny particles known as particulate matter form the haze and soot fouling the air in m...on Agency to set up a research center for airborne particulate matter. Only five institutions nationwide were selected to receive funding to establish these center...Road dust: Rural vehicles emit more pollutants than urban ones
...r vehicle mile). It is a measurement of the total particulate matter emissions a vehicle makes per mile traveled...diesel truck, emits between 30 to 40 milligrams of particulate matter per mile traveled; an average rural vehicle emits between 200 to 300 milligrams ppvm traveled...Exposures to second-hand smoke lower than believed, ORNL study finds
..., concluded that exposures to respirable suspended particulate matter (RSP), for example, were considerably below...analyzed for ultraviolet absorbing and fluorescing particulate matter, solanesol, 3-ethenyl pyridine, nicotine and RSP. Other constituents of environmental tobacco...Tiny particles of dirt really can kill
... particles in the air. Most of the concern about particulate pollution began in 1993 with the publication of th...reased in almost direct proportion to the level of particulate pollution. People living in the most polluted city-Steubenville, Ohio-had a 26 per cent risk of dyin...UF technique detects tiny, potentially harmful airborne particles
...onstrated the ability of this technique to measure particulate concentration levels several orders of magnitude b...Protection Agency dropped its standard to regulate particulate matter down to particles as small as 2.5 microns. Environmental officials would like to know more ......I don't think people would care for much." As for particulate matter in the atmosphere, this is at least relatively cheap at less than a billion dollars per year. And since the stuff would fall back to Earth in a few months to 10 years, the act is not permanent. But it would be difficult to prevent the particle...NSF-funded scientists to examine environment at the molecular level
...nants in soil and water, and the study of airborne particulate matter. This year's awards follow the initial establishment of three EMSIs in 1998 at Columbia, Northwestern and Princeton Universities. Those institutes, also funded for five years, are studying problems such as the role of catalytic oxidatio...Scientist searches Yellowstone Park for carbon dioxide-eating microbe
... While the coal-fueled power industry has reduced particulate and sulfur emissions, it still produces high amounts of carbon dioxide and other greenhouse gases, now believed to be undesirably warming the planet. Ohio University is experimenting with ways of absorbing carbon dioxide with algae. Like other plant...