Sentences with phrase «in field emission»

a heritage of leadership in field emission research dating to the post-WWII era..

Not exact matches

Field studies in southeastern Morocco, just a few kilometers away from the site of this dust storm, show that electric fields generated by blowing sand boost dust emissions up to 10 times more than expected from wind alone.

Field measurements of methane emissions from two termite nests in Guatemala corroborated the laboratory results.

Fluorescently labeled synaptic vesicles inside the axons of cultured neurons were recorded with stimulated emission depletion (STED) microscopy in a 2.5 - micrometer by 1.8 - micrometer field of view.

The system enables large - bore, multi-cylinder engines used in trains, pipelines, backup diesel generators and other fields to run efficiently while producing lower levels of harmful emissions than they do currently.

The California Air Resources Board could soon propose guidelines to generate offsets from reducing methane emissions in rice fields (ClimateWire, Aug. 20).

The simplicity and low cost of a smell test — $ 26.95 retail, before additional doctor or hospital charges — make it especially appealing in neurology, a field dominated by positron - emission tomography scans, dopamine transporter single - photon emission computed tomography imaging and other expensive technologies.

At least three coal - fired power plants are under construction in the U.S. that are designed to have their CO2 emissions captured and sent to an oil field for enhanced oil recovery, including the Kemper County Energy Facility up the road from here.

Such technology could cut acid rain — causing sulfur dioxide emissions by more than 90 percent, smog - forming nitrogen oxides by 75 percent, and — ultimately — capture more than 80 percent of the CO2 normally produced by combustion, storing it in nearby depleted oil fields by 2015.

Arefiev co-authored the study, «Enhanced multi-MeV photon emission by a laser - driven electron beam in a self - generated magnetic field,» published May 2016 in the journal Physical Review Letters.

«In many ways, we're saying we expect a bit of magic to occur,» says Chris Field, a climate scientist at Stanford University in Palo Alto, California, who instead favors drastic emissions reductionIn many ways, we're saying we expect a bit of magic to occur,» says Chris Field, a climate scientist at Stanford University in Palo Alto, California, who instead favors drastic emissions reductionin Palo Alto, California, who instead favors drastic emissions reductions.

The atom is then transferred into an environment of a light field in which the light - absorption and light - emission of the atoms act as collisions with other particles.

This has led to a large decrease in sulfur emissions, and less atmospheric deposition of sulfate to agricultural fields, and consequently, declining sulfate concentrations in rivers.

Woods Hole Research Center (WHRC) Assistant Scientist Sue Natali and colleagues engineered first - of - a-kind warming experiments in the field to determine net gains or losses in carbon emissions.

FIELD FUMES California's agricultural regions are responsible for between 20 and 51 percent of the total emissions of nitrogen oxide gases in the state, new research finds.

«Enhanced nitrous oxide emissions found in field warming experiment in the Arctic.»

The study provides the first field - based evidence that arctic N2O emissions increase when the Arctic is warming; and that hampered plant growth plays a substantial role in regulating Arctic greenhouse gas exchange.

In succession, the Ulysses probe, near Jupiter, and Cassini, then approaching Saturn, picked up emissions as the still - potent stream of particles rammed into those planets» magnetic fields.

Field emission electron sources catch scientists» attention due to its ability to provide intense electron beams that are about a thousand times denser than conventional thermionic cathode (like filaments in an incandescent light bulb).

«We have yet to make real progress in turning the world toward decreasing CO2 emissions,» says the study's co-author Chris Field, director of the Carnegie Institution of Washington's Department of Global Ecology in Stanford, Calif. «A greater buildup of CO2 means more warming.»

The same process could also be important in paddy fields, for example, which account for around 20 percent of human - related emissions of methane.

Depending on their size, so called near - fields (electromagnetic fields close to the particle surface) were induced by the laser pulses, resulting in a controlled directional emission of electrons.

In a paper recently published in Nanotechnology, a team led by Professor My Ali El Khakani, from the Energie Matériaux Télécommunications Research Centre of INRS (INRS - EMT), has reported an original approach for the development of novel graphenated - MWCNTs with enhanced field electron emission (FEE) propertieIn a paper recently published in Nanotechnology, a team led by Professor My Ali El Khakani, from the Energie Matériaux Télécommunications Research Centre of INRS (INRS - EMT), has reported an original approach for the development of novel graphenated - MWCNTs with enhanced field electron emission (FEE) propertiein Nanotechnology, a team led by Professor My Ali El Khakani, from the Energie Matériaux Télécommunications Research Centre of INRS (INRS - EMT), has reported an original approach for the development of novel graphenated - MWCNTs with enhanced field electron emission (FEE) properties.

To stay in that exact spot, the craft will use a field emission electric propulsion engine, which ejects ions of liquid metal cesium to exert a miniscule thrust to counter tiny forces on the craft, such as the sunlight itself.

The Solar Dynamics Observatory, launched by NASA in February, returns 16 - megapixel images of the sun on a nearly continuous basis, splits the sun's emissions into its individual wavelengths, tracks the propagation of waves across the sun's surface and maps the ever shifting solar magnetic field.

This field now becomes the dominating factor in determining the emission properties.

The colored fields (wedges) show estimated emission reductions achieved in the carbon - intensive industry in the period 2010 — 2050, assuming ambitious deployment of technologies and measures that are currently commercially available.

As a result, the team has turned to other projects funded by outside groups, such as measuring methane emissions from natural gas fields in Utah (ClimateWire, Aug. 7).

Since the binding energies of the electrons are very small, the DC detector electric field used in the experiment was strong enough to ionize these Rydberg atoms, leading to the emission of low energy electrons.

China is following suit, according to a news story in the same issue of Science, launching the Erdos coal - to - liquid plant in Inner Mongolia that will capture some of its 3.6 million metric tons of CO2 emissions and use it to flush out oil from nearby fields.

To determine the structural and chemical composition of the soft tissues Lindgren collected and see if the fossil sea turtle did have a dark colored shell, the researchers subjected the sample to a selection of high - resolution analytical techniques, including field emission gun scanning electron microscopy (FEG - SEM), transmission electron microscopy (TEM), in situ immunohistochemistry, time - of - flight secondary ion mass spectrometry (ToF - SIMS), and infrared (IR) microspectroscopy.

Emissions from vehicles and construction dust also combine with raised levels of black carbon generated from winter sources — fires for warmth, brick kilns that are lit in the autumn, and widespread field burning in neighbouring states.

Riley Duren, chief systems engineer for the Earth Science Directorate at NASA's Jet Propulsion Laboratory who is unaffiliated with the study, said he agrees with the study's findings that locating and mitigating methane emissions are important both in cities and in oil and gas fields.

Over three years of field studies in China, researchers consistently demonstrated that SUSIBA2 delivered increased crop yields and a near elimination of methane emissions.

The satellite data is being combined with that collected by the National Lightning Detection Network and from a network of sensors that measure low - frequency electromagnetic emissions, or «sferics,» and changes in the direction of the electric field.

GM crops that tolerate herbicides deserve some praise: They help minimize mechanical weed removal, which means less soil erosion, more carbon stored in the soil and fewer carbon emissions from tilling equipment making trips across fields, scientists noted in 2012 in a special issue of Weed Science focused on herbicide - resistance management.

What would be achieved in this way would be the closing of the cycle of industrial ecosystems and the minimising of the quantity of resources used, waste generated and environmental emissions However, research and innovation in this field are essential to show governments and companies that this approach is feasible.

The first is the FIELDS experiment which will examine the different fields in the corona, including the Sun's magnetic field, electric fields, waves, plasma density, electron temperature, density fluctuations and radio emisFIELDS experiment which will examine the different fields in the corona, including the Sun's magnetic field, electric fields, waves, plasma density, electron temperature, density fluctuations and radio emisfields in the corona, including the Sun's magnetic field, electric fields, waves, plasma density, electron temperature, density fluctuations and radio emisfields, waves, plasma density, electron temperature, density fluctuations and radio emissions.

Recently, signatures of CO Cameron and CO2 + doublet ultraviolet auroral emissions have been detected with SPICAM (Gérard et al. 2015); they showed that the Mars aurora is a temporary and spatially localized phenomenon appearing near the open - closed magnetic field line boundary in cusp - like structures.

The type of radio emission seen in the brown dwarfs arises in more - massive stars as a result of plasma interacting with the star's magnetic field.

A detailed field guide for «Methods for Assessing Carbon Stocks and Emissions Factors in Mangroves, Tidal marshes and Seagrasses» is currently available in our Resources section and the standardized methods outlined within allows consistent collection of comparable data in these habitats around the world.

They release radio energy in a nearly flat spectrum because of the emission of radiation by charged particles moving spirally at nearly the speed of light in a magnetic field enmeshed in the gaseous remnant.

The problem with this interpretation was that such collision events would create large debris disks which would glow brightly in the infrared, yet previous searches with NASA's Wide - field Infrared Survey Explorer, or WISE, had found no such excess infrared emission from KIC 8462852.

The zero emission polar research station, which is approximately 220 Km from the Antarctic coast, is an ideal logistics hub for field exploration in the 20 ° - 30 ° E sector of Antarctica.

Metabolic imaging with improved positron emission tomography, in particular in the fields of oncology and inflammatory diseases.

The observed Sgr A * emission is polarized and this means that it is produced by electrons gyrating around magnetic field lines in so called synchrotron process.

Impacts of rice varieties and management on yield - scaled greenhouse gas emissions from rice fields in China: A meta - analysis.

Sensitive observations of emission and absorption in this line can probe deeply into the reheating and reionization epochs, and give us a detailed view of the density, temperature and velocity field of the material.

We clearly resolved point sources and the Galactic diffuse emission, and found that ~ 90 % of the flux observed in our field of view originates from diffuse emission.

We find that the influence of thermal polarization and dust grain alignment on the polarized emission displayed as spatially resolved polarization map or as spectral energy distribution trace disk properties which are not traced in total (unpolarized) emission such as the magnetic field topology.