Sentences with phrase «how tracers»

The device gathers data on how tracers — microscopic particles that can be pumped into and recovered from wells — move through deep rock formations that have been opened by hydraulic fracturing [fracking].

The device gathers data on how tracers — microscopic particles that can be pumped into and recovered from wells — move through deep rock formations that have been opened by hydraulic fracturing.

Not exact matches

Bowern counters that the «instability» of words can actually be a boon, serving as a tracer for how languages change over time.

In this new work, Carrigan's team injected gas tracers into an old cavity in Nevada created by an underground nuclear explosion and studied how the gases were transported and released from the cavity.

Iron can fuel plankton blooms and influence how the ocean responds to climate change, while the lead images show the impact of past pollution on the ocean and continuing contamination in some parts of the world and aluminium is used as a tracer of desert dust inputs to the ocean.

«These include different types of MRI scans, which use strong magnetic fields and radio waves to produce detailed images of the inside of the brain, and Positron Emission Tomography (PET) scans, which use a small amount of a radioactive drug, or tracer, to test how tissues in the brain are actually functioning.

They looked at the minerals and the trace elements in the rocks because the tracers can help identify where the minerals have been by how they crystallized.

Fluorescent Hands: A fluorescent tracer technique at the University of Washington can help pesticide applicators better understand how exposure occurs.

These vapor tracers, as they're called, will allow scientists to visually track how particles in space move.

Researchers injected a tracer called gadolinium intravenously into the subjects and then scanned their brains to see how much got past the blood - brain barrier — which was noticeably leakier in those who had Alzheimer's.

To see how the two gene versions affect the living human brain, the NIMH researchers scanned 24 healthy young adults twice using PET (positron emission tomography), which uses radioactive tracers to visualize brain function.

She has explored this theory using «tracer» molecules that follow the paths of brain cells to see how one brain area connects to another, watching as the medial preoptic area extends into the song control areas.

Afterwards, the researchers measured how much the muscle will grow using muscle biopsies and metabolic tracers.

When shots are fired, red tracer lines indicate the path of the bullet, which allows you to pause the action and then decide how best to deal with the incoming threat.

«For me, it's a game I play with myself about how to shift the familiar but keep things recognizable enough that you think you know what you're looking at — almost this tracer image buried in the picture,» Thornton has said.

Mostly this is a question of scale (model grid boxes are too large for the details to be resolved), but sometimes it's a matter of being uncertain how to include it (for instance, the impact of ocean eddies on tracers).

The tracer changes provide even less constraint on how much the heat transport (and therefore climate) may have changed.

«Hansen now believes he has an answer: All the climate models, compared to the Argo data and a tracer study soon to be released by several NASA peers, exaggerate how efficiently the ocean mixes heat into its recesses.

To determine how ocean circulation changed, the scientists measured three types of chemical tracers.

«The results show that we need to think differently about how the ocean responds to taking up heat and passive tracers or greenhouse gases.

As a result, estimating how much heat the ocean absorbs by only using a tracer may not be accurate.