Sentences with phrase «of air samples»

In the past six years, funding for part of the network — the collection of air samples in flasks — has not kept pace with cost increases, said Ed Dlugokencky, an atmospheric chemist with NOAA's Earth Sciences Research Laboratory in Boulder, Colo..

«We've had about a 25 percent decrease in the number of air samples measured from the global cooperative network,» Dlugokencky told Live Science.

This product primarily exploits high - quality measurements of air samples collected at tens of sites around the world by various laboratories (119 sites for CO2, 30 sites for CH4 and 127 sites for N2O), in combination with a numerical model of atmospheric tracer transport (Chevallier et al. 2010, Bergamaschi et al. 2013, Thompson et al. 2014).

«The debris pile acted like a chemical factory,» atmospheric scientist Thomas Cahill of the University of California - Davis explained to the American Chemical Society in 2003, after analyzing many of those air samples.

In another study by Hites, two new flame retardants — one of them sold as Firemaster 550 — were detected in more than half of the air samples taken at six sites along the shores of the Great Lakes, with the highest concentrations around Chicago and Cleveland.

The new Schmidt grant will allow the Scripps team to chip away at a years - long backlog of air samples to measure changes in the ratio of carbon isotopes, which provides information about manmade sources of CO2.

The five - year, $ 500,000 grant will allow for analysis of a backlog of air samples to discern the contribution of CO2 from man - made sources

The new approach involves using a radiation detector to take multiple periodic measurements of an air sample for at least two hours.

In particular, there are alot of complications in determining the age of the air sample relative to the age of the ice it is in, due to precisely when the ice seals off and becomes non-porous.

Not exact matches

Researchers with the University of Miami are swabbing their way through her house and testing the quality of her air on a regular basis After taking a mold sample this winter, researchers found mold in her home.

Also, Ice core samples that go back as far as 800,000 years have atmospheric gasses trapped within, so give a source to determine the make - up of the air, showing consistant level of carbon... directly refuting the AiG site that claimns the air has changed.

The CO2 is sampled from air that is above the Boundary Layer; ostensibly free from surface effects.The Keeling Curve has the longest history of CO2 continuous measurements; but over the past 50 years a network of similar stations has become active.

The researchers evaluated a wide range of pesticides currently being used through weekly composite air and rain sampling collected during the 1995 and 2007 growing seasons in the Mississippi Delta agricultural region.

Soil sampling began in backyards last week to gauge the effect of Tonawanda Coke's illegal air pollution in the Town of Tonawanda, Kenmore and Buffalo.

Would it be thrown off course by regional dialects, short samples, background noises or the hum of air conditioning in the test centre?

In advance of the meeting, Labour released a poll of members (based on an «initial sample» of 1,900) showing that 75 per cent opposed intervention, regarded by some as an attempt to bounce the party into opposing air strikes,

CHELSEA — A controversial renovation of the Hotel Chelsea has unleashed hazardous levels of lead into the air — with some samples showing 10 to 40 times the U.S. Environmental Protection Agency's recommended lead safety levels, according to an environmental and safety report commissioned by hotel tenants.

In just the relatively small sample the auditors reviewed, they found almost $ 170,000 worth of tools, sinks, air conditioners, bathroom medicine cabinets and eyewash stations were simply missing.

To that end, the BioBE Center's microbiologists have begun working on more rigorous ways to sample the air and various surfaces of their two test buildings, the Lillis Complex and Providence Milwaukie Hospital in a suburb of Portland.

An ice core is a core sample from the accumulation of snow and ice over many years that have recrystallized and have trapped air bubbles from previous time periods.

To see if these regulations affected bromine concentrations, atmospheric chemist Stephen Montzka of the National Oceanic and Atmospheric Administration in Boulder, Colorado, and colleagues analyzed air samples taken several times each month from 10 land - based sites across the globe between 1995 and 2002.

Much higher contaminant counts were detected inside the air filter for the nitrogen gas — installed in 1979 and not opened for nearly 40 years — but Regberg says the bugs were growing on the filter's outer parts and multiple additional lines of defense separated this fungi from the actual samples.

It is much cheaper to test ice cores, which capture years of data in one core, than to do repeated air sampling over time.

In the future, this kind of aquatic flier could be used to perform search - and - rescue operations, sample water quality or simply explore by air or sea.

He seals the paper sample inside the machine's chamber, and a pump sucks out the air until the pressure drops to a staggering 10 ^ -6 Torr (a billionth of an atmosphere).

Over a period of six weeks, the researchers collected air samples in Pasadena, located in the notoriously smoggy Los Angeles valley.

The team found that zapping mixtures of air with electricity, which simulates the chemistry of the upper atmosphere, could produce enriched levels of 15N15N like they measured in air samples.

The real answer to that question will never be known as few direct measurements were taken of the plume that followed the disintegration of the two towers into a blizzard of dust, though air samples were collected in subsequent weeks and months.

The researchers tested air samples from ground level and from altitudes of about 20 miles, as well as dissolved air from shallow ocean water samples.

About 60 percent of respondents reported symptoms that would be expected in people exposed to high levels of the chemicals found in the air samples, Subra said.

They say they need precise data on the prevalence and onset of medical conditions, as well as from air and water sampling, to properly assess the hazards of drilling.

The scientists collected air samples on the ground in Malaysia and Taiwan, in the region of the South China Sea, between 2012 and 2014, and shipped them back to the UK for analysis.

Though the ferrets had no direct contact with each other, all of the highly pathogenic virus strains (the 2016 sample and the genetically tweaked strains) spread through the air via respiratory droplets to infect ferrets in neighboring cages.

Regulators failed to collect air samples in the week following a radiation release at a New Mexico nuclear waste dump because of a vacancy in the office responsible for monitoring the site

But I was interested in finding out what else I might be breathing, so I borrowed an air sampling pump from Jennifer Richmond - Bryant, an assistant professor of environmental and occupational health sciences at Hunter College in New York City.

Embedded in an artificial diamond will be four hollow gold pellets, the size of BBs, containing samples of air, seawater, soil — the life - giving elements — and human blood.

«Any national security incident would likely be significantly bigger, and could potentially be detected and reconstructed using data from fewer or more widely - spaced air sampling stations downwind of the release.»

P.E., Neelakshi Hudda and colleagues note that past research has measured pollution from air traffic before, but most of these studies only sampled air within a couple of miles, at most, from airports.

To test the idea, they drove along every street in the District of Columbia and regularly sampled the air, mapping the concentration of methane over a period of 2 months.

«The fruit samples are placed in a pre-chamber into which an air flow is injected which reaches the tower with the sensors which are metal oxide semiconductors that detect odorous compounds such as methane or butane,» explained José Pelegrí Sebastiá, UPV researcher at the Gandia campus and co-author of the paper.

Researchers at Tufts University have stabilized blood samples for long periods of time without refrigeration and at high temperatures by encapsulating them in air - dried silk protein.

A study that used stored blood samples from U.S. Air Force personnel who conducted aerial herbicide spray missions of Agent Orange during the Vietnam war found a more than 2-fold increased risk of the precursor to multiple myeloma known as monoclonal gammopathy of undetermined significance (MGUS), according to an article published online by JAMA Oncology.

That means that a breathprint reflects what's going on in a person's body and isn't just a random sampling of room air, they conclude.

Cota immediately signed up for the study and learned how to use a particle counter, which measures particulates and toxins in the air, to take samples of ambient air quality surrounding her home.

He gathered a bit of rainforest air, using an instrument that sucks a sample through a fine nozzle and sprays it onto a ceramic square half a millimeter on each side, where any microscopic airborne particles get stuck.

He may find clues in the samples of air, water and blood from the crew that were «exported» from Biosphere 2 before the oxygen was turned on last week.

With help from Hiroshi Tanimoto, PhD, and colleagues at the National Institute of Environmental Science in Tsukuba, Japan, the plane sampled at altitudes between two and three kilometers above Japan to avoid surface contaminants, and on days during the KD season when air currents originated only from northeastern China.

The scientists investigated the waters near Guam last winter using three different high - tech aircraft to collect air samples and examine the abundance, distribution and transformation of various gases in the tropical atmosphere.

This chamber is filled with dry air — at a pressure of about 1 atm — to prevent the electronics package from overheating, while the high - vacuum probe end of the RGA is specifically designed to protrude out of the chamber so it can perform gas sampling.

Between January 2008 and November 2010, researchers at the Colorado School of Public Health collected air samples in Garfield County, Colo., which has been experiencing intensive drilling operations.