Sentences with phrase «radioactive form»

Millions of patients depend on a rare radioactive form of one element to scan them for disease.

Large and small animal nuclear medicine is available and is a subspecialty of radiology in which radioisotopes (compounds containing radioactive forms of atoms) are put into the body to evaluate organ function or localize bone disease such as stress fractures or tumor metastasis.

Iodine is absorbed and used by the thyroid gland in the neck, so radioactive forms can concentrate there and promote cancer.

Members of a team led by paleoanthropologist Isaiah Nengo estimated the fossil's age by assessing radioactive forms of the element argon in surrounding rock, which decay at a known rate.

«We do not believe a convincing case can be made on the basis of waste management considerations that the benefits of partitioning and transmutation [conversion of fuel into less radioactive form] will outweigh the attendant safety, environmental [and] security considerations, and economic costs,» wrote the researchers, who included President Obama's now science advisor John Holdren, in 2003.

Those particles entered food webs all over the world and show up in the form of radioactive forms of carbon in organisms that lived through that period.

Nuclear explosions produce radioactive substances that are rare in nature — like carbon - 14, a radioactive form of the carbon atom that forms the chemical basis of all life on earth.

The device tested by North Koreans would be a» boosted» A-bomb injected with tritium, a radioactive form of hydrogen.

Age estimates relied on measures of the decay of radioactive forms of argon and uranium in volcanic ash layers framing tool - bearing sediment.

Murthy and his colleagues at the University of Michigan Cyclotron Center have begun making a radioactive form of ammonia using an even smaller cyclotron that went online earlier this year at the U-M Health System.

Researchers examined the covers with carbon dating — which looks at a radioactive form of carbon in a sample to determine its age — and other tools, finding the artifacts are authentic.

Dating relied on measures of the decay of a radioactive form of uranium in the human fossil and a nearby hippo tooth.

Tritium is a radioactive form of hydrogen which increases the destructive power of nuclear weapons.

Over time, atoms of the radioactive form of potassium — an isotope called potassium - 40 — will decay within a rock to spontaneously form stable atoms of argon - 40.

The human body takes up strontium, for example, as if it were calcium, which is why the radioactive form of the element can collect in teeth, nails and bones, causing serious health problems such as bone cancer.

In their analyses of the beaches, the scientists detected not only cesium - 137, which may have come from the Dai - ichi plant or from nuclear weapons tested in the 1950s and1960s, but also cesium - 134, a radioactive form of cesium that can only come only from the 2011 Fukushima accident.

The tablets swamp the thyroid with non-radioactive iodine, preventing uptake of the radioactive form.

Their discovery could aid in the synthesis of new «radiotracers» — chemical compounds that contain a radioactive form, or isotope, of an element — for use with a noninvasive, high - resolution 3 - D medical imaging technology known as PET (positron emission tomography) scanning.

Miller and colleagues came to these conclusions by looking at radiocarbon dates — based on how much of the radioactive form of carbon they contain — from dead plants revealed by melting ice on Baffin Island, in the Canadian Arctic.

Radiocarbon is a radioactive form of carbon that's created when nitrogen reacts with cosmic rays in the upper atmosphere.

To probe «closed shell» effects surrounding elements with 32 neutrons, a team at TRIUMF produced exotic, radioactive forms of titanium and weighed them with the ultra-precise mass spectrometers at TRIUMF's Ion Trap for Atomic and Nuclear Science (TITAN) facility.

To make sure they are getting data only on the protein of interest, the researchers label their target protein with a radioactive form of carbon known as carbon - 13, while the rest of the proteins are unlabeled.

In this case, if you're iodine deficient, taking a potassium iodide (a stable form of iodine) supplement can protect your thyroid by «flooding» your system with iodine so your thyroid has no need to take in the radioactive form.

Radioactive iodine is a radioactive form of the mineral iodine.

With radioiodine treatment a radioactive form of iodine is given, the radiation destroys the portion of the gland that is not functioning normally.

The only form of iodine that has potential to be dangerous to the environment is a radioactive form that has a half - life of millions of years, and is released by nuclear power plants.

Dating of those plants, using a radioactive form of carbon in the plant tissues that decays at a known rate, has given scientists an unusually precise method of determining the history of the ice sheet's margins.