Sentences with phrase «most radioactive»

Most radioactive metal ores are contained in igneous rocks?

The MIT Study found that reprocessing and recycling plutonium — which creates weapon - usable material and some of the most radioactive waste in the world — is also uneconomic and likely to remain so for decades to come.

Since bananas happen to be high in potassium, they are actually one of the most radioactive foods.

Waste solids could also clog pipes, along with ion - exchange filters designed to grab the most radioactive constituents from the low - level waste for addition to the high - level stream.

Their fundamental discoveries may aid research into the management of nuclear waste, by helping scientists understand how chemicals can be used to separate the most radioactive elements.

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).

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.

Not exact matches

The most popular (and likely apocryphal) version of events then goes something like this: One soldier and two plant workers, all volunteers, bravely strapped on wetsuits and clamored into the radioactive water.

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

Centuries of research, tens of thousands of fossils unearthed, dated with the most reliable scientific methods (radioactive istopes such as Carbon - 14, potassium - argon, uranium - lead, etc), ample amounts of geological data, comparing rock formations from Africa and South America, from the British Isles and the Appalachians, coming to the evidence that these rocks were once united under the same continent (Pangaea, Gondwanaland, Rodinia, etc), etc, etc...

In addition to these three properties, Investigative Post reported last July that state and federal officials in 1979 identified dozens of other residential and commercial properties — most in Niagara County — contaminated with what they believe is radioactive industrial waste.

This investigation is examining multiple unplanned shutdowns, a transformer fire that triggered the declaration of an unusual event level emergency, and most recently, a radioactive tritium leak that has caused groundwater radioactivity levels to rise more than 65,000 percent.

The problem in eliminating these inequities is some taxpayers will end up paying more and some less down the line — a radioactive equation for most politicians, says Carol Kellerman, president of the Citizens Budget Commission, a good government group that's been seeking reform for years.

«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.

Gravekamp thinks the radioactive bacteria affected metastatic tumours most because cells there were still rapidly multiplying, leaving their chromosomes more open to damage than those in healthy tissues or in the original tumour.

These particles are one of the most pervasive forms of matter in the Universe: they are created in the Sun and in supernovas, by cosmic rays crashing into the upper atmosphere, and they are even made on Earth, streaming out from nuclear reactors and radioactive rocks.

The chemical is administered after nuclear exposure because it helps protect the thyroid from radioactive iodine, one of the most dangerous elements of nuclear fallout.

«About 20 percent of the helium is coming from the moon itself, most likely as the result from the decay of radioactive thorium and uranium, also found in lunar rocks,» said Benna.

There are about 1,300 dry casks at 55 sites nationwide; however, most of the radioactive waste generated in the United States sits in cooling pools similar to Japan's.

The government has cleaned up most of the «trinitite», the glassy green radioactive mineral formed by the blast.

Since the radioactive atomic nuclei are synthesized in the innermost regions of the supernova, in the very close vicinity of the neutron star, their spatial distribution reflects explosion asymmetries most directly.

Lead could shield radioactive substances, but most ordinary materials like walls or glass do not stop gamma rays.

Manchester scientists have revealed how arsenic molecules might be used to «fish out» the most toxic elements from radioactive nuclear waste — a breakthrough that could make the decommissioning industry even safer and more effective.

Most of the experiments were carried out in the laboratories at Idaho, which provided a safe area to work with radioactive material.

The leakage earlier this month of hundreds of tons of radioactive water — the most serious incident at the beleaguered plant since it was devastated by a tsunami in March 2011 — highlights the failure by the Tokyo Electric Power Company (TEPCO) to properly manage the operation.

Commentators are pointing out that immigration reform appears to have strong support in Virginia's seventh district, and pro-reform politicians are trying to spin the issue differently — Cantor lost touch with his constituents; Cantor failed to embrace immigration reform wholeheartedly enough — but most commentators clearly feel that Cantor's defeat makes immigration radioactive for Republicans.

Short - term fixes Existing disposal facilities have adequate capacity for most low - level radioactive waste and are accessible to waste generators in the short term, but constraints on the long - term disposal of class B and C wastes have become clear, according to a report by the Government Accountability Office last year.

The pattern of prevailing winds during the accident meant that most of the radioactive materials released from the plant were blown out to sea.

MEXT, the Japanese science ministry, has been monitoring radioactive iodine and caesium, considered most harmful to health, in soil 25 to 58 kilometres from the plant since 18 March.

• Most of the radioactive particles are expected to fall out over the western Pacific Ocean.

Unless a large explosion sends radioactive material high into the atmosphere, most of the fallout from Japan will not make it across the Pacific Ocean.

Shellfish and other bottom feeders would be the ones most likely to suffer long - term contamination as radioactive particles settle on the sediment.

For ores that contain even less concentrated uranium — McArthur River is the most concentrated active mine — the proportion of waste in radium and other radioactive elements (as well as toxic heavy metals such as arsenic and mercury) is even higher — and McArthur River's uranium is much less concentrated than the mines of the past like nearby Rabbit Lake or Shinkolobwe in the Democratic Republic of the Congo's Katanga Province.

The Chernobyl accident emitted much more radioactivity and a wider diversity of radioactive elements than Fukushima Daiichi has so far, but it was iodine and caesium that caused most of the health risk — especially outside the immediate area of the Chernobyl plant, says Malcolm Crick, secretary of a United Nations body that has just reviewed the health effects of Chernobyl.

One possible solution to quickly measure a population's exposure to radiation in the event of a nuclear disaster or some other large - scale leak of radioactive material — such as a so - called «dirty bomb» attack — would be to scan the body in places where that material is most readily absorbed.

Marine scientists have calculated that, based on all the radioactive particles released (or leaking) from Fukushima, a dose due to this most recent nuclear accident would add up to a total of roughly one microsievert (a unit of radiation exposure) of extra radiation — roughly one tenth the average daily dose most Americans experience, one fortieth the amount from a cross — North America flight and one one - hundredth the exposure from a dental x-ray.

A patient is injected with a radioactive tracer, and the cells that absorb it most readily glow bright.

Ever - so - slightly radioactive bits of white plastic, chunks of lead, and green - painted pieces of the bomb's casing are among the most common finds.

Most of the items aren't radioactive, Willis says, «but there is hot stuff for people who get down on their knees with a Geiger counter and sort through all that rubble.»

A proposal to bury most of Germany's low and intermediate level radioactive waste at Schacht Konrad, a disused mine in Lower Saxony, has existed since 1975.

The most common probes, which use fluorescent markers or radioactive labels to pinpoint the virus's location in a tissue sample, sometimes have difficulty distinguishing the target — HIV RNA and DNA — from surrounding cellular components.

The team says that in regions where the radioactive fallout after Chernobyl was most intense, not only mushrooms but also higher components in the food chain, including game meat of red deer and wild boar, still have excess values of 137Cs.

But the buildup of heat from the decay of radioactive elements in the interior then remelted parts of the mantle, which began to erupt onto the surface some 500 million years after the Moon's formation, pooling in impact craters and basins to form the maria, most of which are on the side of the Moon facing the Earth.

All this would be of substantially less concern if New York were like most of the other states that produce some radioactive waste during natural gas drilling.

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.

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.

Although these depositories usually contain several used fuel assemblies and therefore more total radioactivity than a reactor does, most of the more dangerous radioactive isotopes in the old fuel have already decayed away.

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.

Some gamma rays can be produced by radioactive elements within Ceres itself, but most are byproducts of cosmic rays originating from elsewhere in space.

The many serious technical deficiencies of the Yucca Mountain site and DOE's flawed approach to geologic disposal notwithstanding, the most potentially explosive aspect of the federal program is the reality that tens of thousands of shipments of deadly spent nuclear fuel and high - level radioactive waste will travel the nation's highways and railroads - through 43 states and thousands of communities, day after day for upwards of 40 years.