Sentences with phrase «radioactive isotopes at»

Not exact matches

In its efforts to diagnose microfractures and abnormal bone that would predispose a horse to a full - blown fracture, researchers at the Equine Sports Medicine Program at Tufts School of Veterinary Medicine have been using scintigraphy, a technique in which a horse is injected with a radioactive isotope that isolates skeletal «hot spots» — places where injured bone is rebuilding itself.

And, indeed, there have been numerous incidents at the plant, including leakage of the radioactive isotopes tritium and strontium - 90 into the Hudson River, contamination of groundwater and, last year alone, voluntary venting of «mildly radioactive» steam, plus a transformer explosion.

The only previously known radioactive carbon isotope at the time was carbon - 11, which had a half - life of only 21 minutes (half the isotope's radioactivity will decay in that time).

In related work, geologist Warren Sharp of the Berkeley Geochronology Center in California analyzed isotopes of radioactive argon in the rocks to reexamine the ages of seamounts at the chain's bend.

Two radioactive cesium isotopes, cesium - 134 and cesium - 137, have been detected offshore of Vancouver, British Columbia, researchers said at a news conference.

But when Borg, working with colleagues in Denmark and Washington, D.C., finished measuring radioactive isotopes in the rock, they pegged its age at 4.36 to 4.359 billion years.

It is one of the heaviest - known elements, yet it does not occur naturally because all of its isotopes are radioactive and decay rapidly on a geological time scale,» said the study's lead author, François Tissot, UChicago PhD» 15, now a W.O. Crosby Postdoctoral Fellow at the Massachusetts Institute of Technology.

Scientists agree that tritium, a radioactive isotope of hydrogen, is key to obtaining a precise measurement: As a gas, tritium decays at such a rate that scientists can relatively easily observe its electron byproducts.

The ratio of certain radioactive isotopes produced within such a reactor depends on alpha, and so looking at the fission products left behind in the ground at Oklo provides a way to work out the value of the constant at the time of their formation.

«When we got the first inkling that our new mechanism might be useful for developing radioactive tracers, we started looking at Berkeley Lab and its Biomedical Isotope Facility, which was really central to this work,» Levin said.

(All organisms take in carbon - 14, a rare radioactive isotope, while they are living; when they die, the carbon decays at a steady rate.

However, my girlfriend is a geologist, and she looks at natural radiation that comes from rocks, particularly in the south of England — geologists know what elements and radioactive isotopes they have in the ground because nuclear physicists have been able to find out which of these the radiation comes from.

Following a stint in the Air Force, I was approached by a physicist at Washington University in St. Louis named Michel Ter - Pogossian, who pioneered the use of short - lived radioactive cyclotron - produced isotopes in biology and medicine, which to most people was completely novel.

The technique hinges on carbon - 14, a radioactive isotope of the element that, unlike other more stable forms of carbon, decays away at a steady rate.

Bone Diagenesis and Radiocarbon Dating of Fish Bones at the Shag River Mouth Site, New Zealand Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

[font = Century Gothic] «PU - 239» is the radioactive isotope of plutonium that Timofey (Paddy Considine) is trying to sell in the black market of Moscow, two days after being exposed to a lethal dose of radiation at the nuclear plant where he works and stole the plutonium.

He spent part of the summer at the Large Hadron Collider in Switzerland, and is now at work on a process to cut the production cost of radioactive isotopes.

Now news that two monitoring wells detected a spike in levels of tritium, a radioactive isotope of hydrogen, has raised important questions about the aging infrastructure at the complex.

There's weird crap happening far out in the solar system on Voyager and Pioneer spacecraft not being at the position and velocity where theory says they should be and radiothermal power supplies not decaying at rates predicted upon what are axiomatically constant radioactive decay rate of the isotopes like it isn't really a constant at all.

Jeff Severinghaus, a geoscientist at the Scripps Institution of Oceanography, said that through the use of radioactive isotopes, scientists are more than 99 percent sure that much of the carbon in the air has human fingerprints on it.

Anyway, I glanced at my atomic chart shower curtain today and realised that cantobtainium has to be some sort of radioactive isotope or trans - uranium element.

As shown in the graph below, cosmic - ray intensity (as measured by the radioactive carbon isotope C - 14) and terrestrial climate (as measured by the oxygen isotope O - 18) correlate in amazing detail over an interval of at least 3000 years (see graph below; the bottom graph is the central section, blown up to reveal detail)