Sentences with phrase «of ultrafine»

Researchers from the Illinois Institute of Technology and National Institute of Applied Sciences in Lyon, France, published a study this month that found commercially available 3D printers release a high amount of ultrafine particles.

Though an elevated concentration of ultrafine and lead particles was present in both areas, the neighborhood next to the airport had levels five to eight times higher than the one next to a highway.

Recent studies identify black carbon, a component of ultrafine particulate air pollution, as a critical climate warming agent both in the atmosphere and when deposited on snow and ice.

Buildings in central Seoul are shrouded in a cloud of ultrafine particles, Tuesday.

Fan's most recent paper appeared in Science and investigated the influence of ultrafine aerosol particles from urban areas on severe storms.

Levels of ultrafine particulate matter in the atmosphere are neither monitored nor regulated by environmental agencies not only in Brazil but practically anywhere in the world, according to Artaxo.

The present work will lead to better computer models for air pollution, which do not currently take into account the nighttime birth and growth of ultrafine particles.

«Fine particles alone are not enough to worry about,» he says, pointing to other potential indoor sources of ultrafine particles, including home cooking, candles and fires.

«People could be exposed to dangerous levels of ultrafine particles emitted by printers if they are in an environment that is poorly ventilated and the printer operation is frequent or continuous,» says Lidia Morawska, a physicist and co-author of the study, which appears in this month's online issue of the American Chemical Society's Environmental Science & Technology.

The primary purpose of this study was to determine the concentration of ultrafine particles emitted by laser printers.

In contrast, sprawling or suburban development may lower the risk of ultrafine PM - related deaths by 33 percent.

The researchers calculated the quantity of ultrafine particles and other traffic - related pollutants transit users would inhale if the stop was farther from the intersection.

«The exhaust contains gasses and large amounts of ultrafine particles that are essentially unregulated by the Environmental Protection Agency because the EPA regulates fine particles by weight, and these particles weigh so little,» she said.

However, the health of the entire population pays a high price: substitution of gasoline for ethanol leads to a 30 % increase in the atmospheric concentration of ultrafine particulate matter, which consists of particles with a diameter of less than 50 nanometers (nm).

Several US states, such as California, have laws requiring a 20 % -30 % ethanol blend in gasoline, which also helps reduce emissions of ultrafine particulate matter.

Levels of ultrafine particulate matter in the atmosphere are neither monitored nor regulated by environmental agencies not only in Brazil but practically anywhere in the world, Artaxo stressed.

The proportion of diesel vehicles registered in Leipzig however rose from 19 to 26 % between 2010 and 2016 — with negative consequences: While black carbon and the number concentration of ultrafine particles decreased, the concentration of gaseous nitrogen oxides (NOx) is stagnant and is still too high.

The map shows high levels of ultrafine particulates in the west side near the Peace Bridge completed by Harvard researchers who did the Health Effects Institute Study at the bridge in 2005 and 2006.

Not exact matches

Holographic video has been held back by requirements for ultrafine screen resolutions and staggering data rates — a crisp, moving, holographic image can burn through terabytes of data in a fraction of a second.

In order to evaluate the assessment of the low emission zone, the scientists determined the reduction of tailpipe emissions of black carbon and ultrafine particles at a street - site by taking into account the concentrations measured in the urban background.

Ultrafine palladium wires (connected to silver contacts at each end) swell in the presence of hydrogen, allowing a current to flow.

«What this paper does is raise the stakes in needing to develop a deeper, more accurate understanding of the sources and fates of atmospheric ultrafine particles,» Thornton says.

Atmospheric scientist Joel Thornton of the University of Washington in Seattle, who led the study on the shipping exhaust, says it's possible that ultrafine particles play a role in that scenario.

Ultrafine particles, which form from condensation of hot exhaust vapors, are of particular concern because they deposit deeply into the lungs and can enter the bloodstream.

In the second paper, physicist Dejan Vinković of the University of Split in Croatia developed a model that shows how a combination of stellar wind and infrared radiation from the inner disk can blow the ultrafine crystallized silicate particles billions of kilometers from the inner regions of a protoplanetary disk to its colder outer sections, where comets and other cold but rocky objects, such as Pluto, can form.

London's Black Cabs exposed passengers to an average of more than 108,000 ultrafine particles — microscopic soot 10,000 times smaller than a centimeter that is particularly dangerous because of its ability to penetrate deep into the lungs — for every cubic centimeter traveled.

The development of instruments and mechanisms that can reliably reach the target in the lungs is required for adequately testing with an endoscope, but the looming challenge was finding a mechanism to reliably advance the biopsy forceps to the target even inside the ultrafine and widely branching bronchi.

The puniest bits of soot in diesel exhaust, known as ultrafines, measure on the nanoscale.

The Berkeley Lab team has done previous studies establishing the formation of harmful thirdhand smoke constituents by reaction of nicotine with indoor nitrous acid, showing that nicotine can react with ozone to form potentially harmful ultrafine particles, and finding that thirdhand smoke can cause genetic damage in human cells.

In the absence of photooxidation, ultrafine sulfate particles form from the small amounts of sulfuric acid that is often directly emitted from the power plant.

Additional aerosol mass composed of organosulfate and organonitrate chemicals can then form via nitrogen oxide - initiated oxidation of VOCs from natural vegetation (e.g., isoprene) in the presence of highly acidic ultrafine particles.

NIST recently issued Reference Material (RM) 8027, the smallest known reference material ever created for validating measurements of these man - made, ultrafine particles between 1 and 100 nanometers in size.

Concentration Response Functions for Ultrafine Particles and All - Cause Mortalilty and Hospital Admissions: Results of an European Expert Panel Elicitation, Epidemiology, 20 (6): S40 - S41.

Ultrafine, breathable translucent powder that sets makeup perfectly, keeping the complexion beautifully matte, ready to absorb the first signs of excess oil.

The ultrafine precision pen allows you to get right into the lashline, and also makes it super easy to create a little flick at the outer corners of the eyes.

The Milani Cosmetics Ultrafine Liquid Eyeliners come in five shades with one being the pantone color of the year!

Ultrafine dust particles refers to dust which is about 2.5 micrometers in diameter, nearly a 30th the thickness of human hair.

This ultrafine control of the gear ratio is the key to the CVT's greater efficiency over a conventional automatic transmission with a limited number of discrete gear ratios.

Each of the «noodles» in the Soggy Doggy Doormat ® and Soggy Doggy Super Shammy are made from millions of textured, ultrafine strands woven together, so the surface area of these products is much greater than meets the eye!

Retune jet aircraft engines to generate ultrafine soot instead of the low - particulate exhaust normally desired.

In a locked Honolulu office building, three men are found dead with no sign of struggle except for the ultrafine, razor - sharp cuts covering their bodies.

BACKGROUND: Ultrafine particles (UFPs) have been associated with adverse health outcomes in children, but studies are often limited by surrogate estimates of exposure.

The highest levels of all compounds, including ultrafine particles that more easily penetrate the lungs, were produced while frying with gas.

There's also a huge difference between Ultrafine particles of PLA and ABS.

LG's ultrafine 4K display monitor the fine color to life which makes it one of the best USB C monitor for MacBook.