Sentences with phrase «lived radioactive»

These include the potential of catastrophic reactor accidents on the scale of Chernobyl, the difficulties of managing long - lived radioactive waste, and increased likelihood of nuclear weapons proliferation.

Problematic nuclear waste disposal for very long - lived radioactive elements (e.g. Yucca Mountain); 3.

He contrasted the advantages of renewables over nuclear power plants as their ease of decommissioning: there is no long - lived radioactive waste to deal with, and upgrading, for example, offshore wind turbines, is cost - effective because the foundations and infrastructure are already built.

Long lived radioactive isotopes have low levels of radiation.

The slow upward flow of water insures that the short lived radioactive gases produced by fission die off before the reactor coolant reaches the above - ground portion of the plant (another bonus of gravity driven flow!).

Growing interest in research using beams of short - lived radioactive ions led to another reconfiguration of the facility, with the ORIC serving as a driver accelerator to produce radioactive ion species that were then injected into and accelerated by the 25 - MV tandem.

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.

Caption: The colors represent the relative amounts of short - lived radioactive isotopes, such as iron - 60, injected into a newly formed protoplanetary disk (seen face on with the protostar being the light purple blob in the middle) by a supernova shock wave.

Such boreholes could not house most of the country's waste, like fuel rods from nuclear power plants, but could have potential for smaller, long - lived radioactive materials.

This effort doubles the amount of energy recovered from the fuel and removes most of the long - lived radioactive elements from the waste that must be permanently stored.

Otaki and colleagues collected leaves 16 to 20 months after the accident, after short - lived radioactive contamination had decayed, but this time from locations ranging from 59 to 1760 kilometers from the power plant; contamination levels ranged from 161 to 0.2 Bq / kg.

A few studies have found naturally occurring radioactive materials in the solid waste, but the research only focused on several long - lived radioactive isotopes including uranium - 238 and radium - 226.

Science answers: Spent fuel is more dangerous because it contains a mixture of fission products, some of which can be long - lived radioactive waste, and also plutonium which is highly toxic.

Running a fusion reactor creates a small amount of short - lived radioactive waste that decays away in around a century; high - level waste from traditional nuclear reactors can stick around for thousands of years.

Short - lived radioactive elements formed during the blast keep the shell hot as it expands.

In particular, a relatively new form of nuclear technology could overcome the principal drawbacks of current methods — namely, worries about reactor accidents, the potential for diversion of nuclear fuel into highly destructive weapons, the management of dangerous, long - lived radioactive waste, and the depletion of global reserves of economically available uranium.

At the US government's Los Alamos National Laboratory in New Mexico, researchers are generating neutrons with a particle accelerator and using them to transmute long - lived radioactive elements.

Late last month, the French industry minister, Dominique Strauss - Kahn, gave conditional backing to a plan devised by the nuclear industry to create what amounts to a politician's dream: a reactor that provides plenty of electricity without generating vast quantities of long - lived radioactive waste.

But in October, many such patients may not be able to get the best possible test, due to a looming shortage of a crucial short - lived radioactive element.

«My findings indicate that a supernova shock wave is still the most - plausible origin story for explaining the short lived radioactive isotopes in our Solar System,» Boss said.

The colors represent the relative amounts of short - lived radioactive isotopes, such as iron - 60, injected into a newly formed protoplanetary disk (seen face on with the protostar being the light purple blob in the middle) by a supernova shock wave.

A recent analysis of chondrites by Carnegie's Myriam Telus was concerned with iron - 60, a short - lived radioactive isotope that decays into nickel - 60.

Not exact matches

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.

Chernobyl poisoned their way of life by turning the reindeer radioactive.

In the George Lucas movie, THX - 1138 (the name of the main character was «THX - 1138 ″) everyone's choices are removed and they all live underground because above ground is «radioactive».

Plutonium must be made permanently inaccessible because it has a radioactive half - life of 24,000 years.

No matter where you live on Earth, you most likely interact with radioactive materials every day.

To have ALWAYS existed, without any definite time of starting in the past, this «life» period of radioactive elements long ago would have run its course.

The website hyperphysics.phy - astr, says that «carbon dating is a variety of radioactive dating which is applicable only to matter which was once living and presumed to be equilibrium with the atmosphere.»

I sometimes think that the difficulties we now face in controlling water, air, and soil pollution, and the undue dissemination of radioactive materials, are the result of a common impression that «the boundary between life and non - life has all but disappeared.

Ok, Just a glance at this list would tell you that many of these scientists lived before the theory of evolution and before radioactive dating.

The ones still living would drop nukes on you, or overfly you with crop dusters loaded with radioactive liquids; other than that, and the deaths of innocent people who happen to live there, great plan.

I think that after most radioactive scans, the mother can continue breastfeeding, but if she and her physician are truly concerned, waiting 2 half lives is enough, for a material such as technetium.

This is surely waiting long enough (the half life of technetium, which is used in most radioactive scans is only six hours, so that 12 hours after the injection, 75 % of it will be out of your body).

Each gas drilling well requires 5 acres of road and well pad, 4 to 9 million gallons of water mixed with 50,000 gallons of hundreds of different chemicals — many of them highly toxic carcinogens, neurotoxins and endocrine disrupters (as well as many untested synergistically on living beings) forced into a spider web of miles of pipeline that is soon thick coated with radioactive radium when 60 % of that toxic brew is on its way back upward as gas waste «brine.»

The radioactive fallout from a nuclear power plant melt down or nuclear waste is life threatening and a public health catastrophe.

They are, after all, situated in a densely populated area — 20 million people live within a 50 - mile radius — which means that, in the unlikely event of a terrorist attack or a powerful earthquake or some other catastrophic failure, we'll all turn into radioactive zombies.

Radiocarbon dating depended upon the discovery cosmic rays, which constantly bombard Earth and turn some carbon atoms in living tissue into radioactive isotope carbon - 14.

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).

The isotope has a half - life of approximately 5,600 years, which means that during this period, half the number of radioactive carbon atoms in any once - living substance will convert to nitrogen.

If there is no subsequent radioactive release, that demonstrates that there are living microbes on Mars.

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.

From a tiny terrace outside the apartment's living room, the Chernobyl reactor is visible in the distance, its blocky shape now covered over by the sarcophagus, the concrete coffin designed to contain its radioactive dangers.

In the Fallout video game series, players must live in underground shelters after nuclear war turns Earth into a radioactive wasteland.

The official bodies representing the two groups have now settled on the annus as their definition of the year, allowing both groups» data on the half - lives of radioactive elements to be pooled.

The original dust particles were made largely of silicates mixed with other materials, including water and aluminum 26, a radioactive isotope with a half - life of about 700,000 years.

The new method, published in Scientific Reports, could dramatically reduce the effective half - life (an indicator of the amount of time it takes to bring radioactive materials down to safe levels) of long - lived fission products [1](LLFPs) from hundreds of thousands of years to within a hundred years.

Because Tc - 99m's radioactive half - life is just six hours, it must be made from Mo - 99 at or near the place where the heart patients get their stress tests.

The Carnegie team focused on a rare isotope of titanium, titanium - 49, because this isotope is the product of radioactive decay of vanadium - 49 which is produced during supernova explosions and transmutes into titanium - 49 with a half - life of 330 days.

«It was nowhere near as complex of a release as Chernobyl, which was everything from the core of the reactor,» says Peter Caracappa, a radiation safety officer and clinical assistant professor of nuclear engineering at Rensselaer Polytechnic Institute in Troy, N.Y. «This was a slow release,» he adds, and it was limited to a few radioactive materials, including iodine 131, which has a half - life of just eight days and therefore does not lead to long - term contamination.