Sentences with phrase «tracers in»

Hall, T.M., T.W.N. Haine, M. Holzer, D.A. LeBel, F. Terenzi, and D.W. Waugh, 2007: Ventilation rates estimated from tracers in the presence of mixing.

Schmidt, G.A., 1999: Forward modeling of carbonate proxy data from planktonic foraminifera using oxygen isotope tracers in a global ocean model.

Gerhard Bönisch, Johan Blindheim, John L. Bullister, Peter Schlosser, and Douglas W. R. Wallace, «Long term trends of temperature, salinity, density, and transient tracers in the Central Greenland Sea,» Journal of Geophysical Research 102:18553 - 18571 (1997), see http://www.ldeo.columbia.edu/~noblegas/gerhard/GIN/tspgs/tsp65.html.

Using chemical tracers in sediment that builds up on the sea floor over time, Henry and his co-authors were able to document the relative speed of the Atlantic meridional overturning circulation during each abrupt climate change.

Incongruously rendered in hyper - visible candy colors, the ash swirls glow like radioactive tracers in a nuclear medicine scan.

By tracing retinal projections to the brain and simultaneously labeling connections innervating Cluster N, we found colocalization of the tracers in specific substructures of the visual thalamus.

4:54 Tracking for fracking: tracers in development could track possible contaminants from hydraulic fracturing in the environment.

As he stated himself, he was interested in using tracers in the brain as they provided the possibility of taking objective measurements in real time.

The device sends a tiny amount of silver nanoparticle tracers in rapid pulses through a solid column, simulating the much longer path the particles would travel in a well.

The cruise was part of the international GEOTRACES program, which aims to measure chemical tracers in the world's ocean to understand ocean circulation and provide a baseline to assess future chemical changes in the oceans.

And yet chemical tracers in the remains suggest that most of the Tollense warriors came from hundreds of kilometers away.

«If we find that lymphoscintigrams using tilmanocept are at least as good as the conventional radiocolloid tracer in identification and visualization of sentinel nodes, we would like to see a randomised clinical trial involving large numbers of patients,» says Prof de Bree.

Champalimaud funded C - TRACER in an effort to prevent and treat vision - related disease and illness in Portugal, Portuguese - speaking countries and throughout the developing world.

Baseline PET scan shows uptake of manganese chloride tracer in mouse pancreas, in research at the University of Wisconsin — Madison department of radiology.

The temperature increase believed to have occurred in the past 130 years (approximately 0.5 °C) is also found to imply a climate sensitivity of 2.5 - 5 °C for doubled Cog (f = 2 - 41, if (1) the temperature increase is due to the added greenhouse gases, (2) the 1850 002 abundance was 270210 ppm, and (3) the heat perturbation is mixed like a passive tracer in the ocean with vertical mixing coefficient k - 1 cm2 / s.

Not exact matches

At the Challenge Festival, startups like as BaseTrace, which «uses DNA - based tracers to track where industrial fluids are going in large, complex environments» and Reliefwatch, a cloud - based system that uses smartphone technology to track inventory and diseases for healthcare organizations in the developing world, battled it out on stage for a grand prize of $ 150,000 in investment.

Like a tracer chemical in the blood stream that helps identify the disease, the Enneagram brings to the surface indicators of what might be motivating sinful or harmful actions and patterns.

The extreme view that a person is «just a collection of atoms» is less persuasive in the light of tracer studies showing that the atoms in our bodies are replaced every few years; 6 the self that continues must be constituted by the relationships and patterns among atoms, rather than by the atoms in themselves.

In adopting this mode of ministry, the preacher becomes Heidegger's «tracer of fugitive gods.»

The link between depression and the immune system has been shown using positron emission tomography using a tracer for the translocator protein (TSPO) showing increased immune activation in the brains of patients with major depressive disorder compared with control subjects.

Because of the 7 - d delay in the administration of the Golden Rice dose, the AUCs were calculated for 21 d after each labeled tracer.

The cells in black represent days 1 and 8, the days on which the tracers were ingested.

The good news is that we will shortly have both hitting shots in front of the cameras and with tracers and lasers measuring every yard.

The amount and form of radioactivity in human milk after lung scanning, renography and placental localization by 131 I labelled tracers.

Using a small amount of a radioactive substance as a tracer, the scientists focused on the brain's mu - opioid system in which chemicals called endogenous opioids bind to receptors and hinder the spread of pain messages in the brain.

The tracer was able to successfully identify 3 out of 4 primary tumors, all 14 metastatic lymph nodes and, significantly, was able to identity all 20 of the bone lesions in the patients.

Starting in the mid-1990s, scientists began using GFP as a tracer for studying biochemical processes.

We were able to show this in another group of patients using a different tracer which itself measures the pump mechanism.

The cloning was the first step in using GFP as a tracer chemical in organisms other than jellyfish.

Some supporters of alternative life suggest looking for signs of metabolic activity in varnishes, which could be detected by watching for the flow of radioactive tracers through any hidden organisms.

Like a key fitting into a lock, the carrier molecules bind to certain receptors or biomarkers and the radioactive atoms enable PET or SPECT scanners to image areas where the tracers have collected in large numbers.

Previous tracers have targeted GRPR but this new tracer is one of the first dual - receptor target tracers, or tracers that target more than one biomarker, to be studied in humans.

So in 1991 and 1992 his team sprayed plots of red pine and oak in the Harvard Forest with water doped with nitrogen - 15, a tracer isotope.

Visible from North Carolina to upstate New York, the eerie trails were created by five suborbital NASA rockets that soared to altitudes of 50 to 80 miles, where they released chemical tracers that reacted with oxygen in the thin upper atmosphere.

Now a team of researchers has been able to identify accurately the sentinel node (SN) in head and neck squamous cell carcinoma (HNSCC) using a novel tracer; a challenging task because there are up to 150 different lymph nodes in the neck, and the differentiation of true SNs from secondary nodes is difficult.

Colleagues from the USA1 carried out a trial in which 83 patients with early stage HNSCC who were all scheduled to undergo neck dissection were injected with the novel tracer, tilmanocept.

A new tracer can enable surgeons to make an accurate identification of the sentinel node — the lymph node to which cancer spreads first — and hence spare patients the post-operative complications that may be linked to the removal of a group of lymph nodes in the neck.

When the results were compared with studies in the literature using standard radiocolloid tracers the researchers found that the SN biopsy using tilmanocept provided a high identification rate and low false negative rate for SNs, thus facilitating accurate prediction of the spread of the cancer.

These advantages are not confined solely to HNSCC; the tracer may be particularly helpful where the injection site is located very close to the sentinel node, and also in other tumour locations.»

The Champalimaud Center for Translation Eye Research (C - TRACER), part of the LV Prasad Eye Institute in Hyderabad, India, will continue research begun by LV Prasad scientists, who use eye stem cells from living adults to grow new cells that are then implanted into damaged eyes.

This new study is believed to be the first reported to analyze the association between EGFR mutation status in tumor tissue and 18F labeled EGFR - TKI tracer uptake in NSCLC patients.

By using tracer chemicals in experiments with live garden warblers, the researchers followed a circuit of neurons from the cryptochrome molecules to the «cluster N» area of the brain, which is active during navigation, showing for the first time that cluster N uses information from the retina.

In the 1980s, positron emission tomography (PET) scans, which detect neural metabolism with radioactive tracers, snapped the first pictures of the brain in midthoughIn the 1980s, positron emission tomography (PET) scans, which detect neural metabolism with radioactive tracers, snapped the first pictures of the brain in midthoughin midthought.

Matthias Raab, the programme manager of the site, tells me, euphemistically, that using the tracers «is highly experimental» — in other words, it is not clear that noble gases behave as CO2 does.

First witnessed in Jupiter's clouds as rare flashes of scattered light by Voyager 1 in its 1979 flyby and observed decades later by the Galileo orbiter, Jupiter's lightning is thought to be an indirect tracer of the planet's water content.

The first - in - human PET / CT imaging of 75 patients with 18F - MPG was performed to show that this tracer can be used as a companion diagnostic to identify NSCLC patients with EGFR activating mutant tumors (primary tumor or metastatic) with 84.3 % accuracy.

By using isotopic tracers called stable isotopes, researchers showed that seabirds feeding in areas rich in sulfate (a chemical that is an important food for sulfate - reducing bacteria that help break down organic matter) had high levels of mercury.

Using radioactive tracers, they found that a phosphorous molecule has to attach in a certain spot.

Measuring the activity of transporter proteins in a living organism has been a challenge for scientists, because the methods are difficult, often require the use of radioactive tracers, and are hard to use in intact tissues and organs.

«We're responsible for producing radio tracers: radioactive drugs that we use to study the imitation, onset and progression of disease in people,» Schaffer says in a teaser video previewing his lecture.