| Nuclear physics (29) |  |
| Nuclear reaction (15) | |
| Radiation (545) | |
| Radioactivity (103) | |
| Nuclear physics (29) | |
| Nuclear reaction (15) | |
| Radiation (545) | |
| Radioactivity (103) | |
Radioactive feral pigs are threatening Europe. Destroying crops, spreading diseases.""Once a wild pig is full-grown,
including radioactive elements like polonium-210. When the harvested leaves are cured and dried, compounds within them are converted into tobacco-specific nitrosamines (TSNAS), a class of well-known and intensely studied carcinogens.
Others face stringent tests and potentially harmful shipping bans after radioactive cesium was found in rice straw.
Sunflowers were used near Chernobyl after the 1986 nuclear accident there to extract radioactive cesium from contaminated ponds nearby.
Her house is located near a radioactive hot spot. Im so ashamed to go to a shop to buy fruit and vegetables
they confided to Abe their worries about radioactive contamination of the soil in their gardens.
The 1990s to today As testing methods continued to improve researchers found that enzyme indicators on home pregnancy test strips could replace radioactive labels.
#Cold war Nuclear Radiation Creates Anti-Poaching Tool (ISNS)--Radioactive carbon atoms created during 20th-century nuclear bomb tests could help save elephants
and other endangered species. A new study published in this week's issue of the journal of the Proceedings of the National Academy of Sciences shows that carbon-14 a radioactive version of the common carbon atom can be used to determine
 Based on levels of radioactive isotopes or atoms of the same elements with different molecular weights the team estimated that the site was occupied almost continuously between 9800 and 12000 years ago.
One 40â°K (0. 0118 percent) is radioactive with a half-life of 1. 28 x 109â years.
Despite its radioactivity potassium presents no significant hazard when handled. Sources of Potassium Potassium is the seventh most abundant metal in the world.
which changes as the radioactive carbon-14 isotope breaks down over time while the stable carbon-12 does not.
and'60s spread a radioactive variety of carbon worldwide which was picked up by plants during photosynthesis
The team then dated the structure using levels of radioactivity in minerals and the ratio of carbon isotopes or molecules of carbon with different numbers of neutrons from charcoal and grains of sand.
These calcium carbonate deposits which can take the form of cave popcorn (shown here) contain radioactive uranium.
That radioactive element provided a way for scientists to date the cave art. By dating the layer of popcorn on top of the art the scientists came up with a minimum age
The deposits contain tiny amounts of radioactive uranium which decays to thorium over time. By measuring the ratio of uranium to thorium in the layers of cave popcorn scientists can determine the minimum age of underlying artwork Aubert
and Anders Møller of the Universitã Paris-Sud have made ongoing investigations into the biology of radioactive areas like Chernobyl and Fukushima Japan.
The degree of decay was proportional to the degree of radioactive contamination at each site according to the study published in the journal Oecologia.
A nuclear reactor in Petten, The netherlands, that supplies radioactive isotopes for use in medical imaging reopened last week after a month's scheduled maintenance partly alleviating a global shortage of the isotopes (see Nature 460,312-313;
The explosion generated several Suns'worth of radioactive nickel-56 and vast quantities of other lighter elements, such as carbon and silicon.
Gal-Yam says that it is the radioactive decay of the nickel that kept the explosion glowing for months.
One technique relies on the radioactive isotope carbon-14, which occurs in trace amounts in atmospheric carbon dioxide.
and environmental disasters including the risk of radioactive particles being released from contaminated land around the Chernobyl nuclear reactor.
This has raised fears that radioactive particles could be released into the atmosphere. Goldammer told Nature that he received unconfirmed reports on 11 august that 200 hectares in the region are alight.
Jim Smith, who researches the fate of radioactivity in the environment at the University of Portsmouth,
Most of the radioactive particles are in the soil rather than in the flammable leaf litter and trees,
east of Chernobyl the site of the nuclear power plant that exploded in 1986 could cause radioactive particles in the soil to be released into the atmosphere.
The company also plans to cover the damaged reactors with temporary structures in order to limit the release of radioactivity.
A becquerel is defined as one radioactive decay per second. The team then plugged those concentrations into a piece of software called ERICA (Environmental Risk from Ionising Contaminants) to calculate the radiation dose that various groups of wildlife would have received.
a more biologically meaningful indication of how organisms are affected by exposure to radioactivity. Even so, it's just a rough assessment,
says that although the radioactive elements released at Fukushima are different from those released at Chernobyl,
whether or not these observations will let us make predictions for other radioactive areas in the world,
but suggests that cleaning up the more radioactive public spaces in Fukushima prefecture will not be easy.
and leaving it as radioactive mounds in the corners of school playgrounds. The agriculture ministry is also testing how well plants can clean the soil in highly contaminated areas,
you're still left with the problem of how to dispose of the radioactive plants. Burying the soil is expensive, however.
Geoscientists hope to use the decay of radioactive uranium in layers of volcanic ash in the core to precisely date events between about 205 Â million and 235 Â million years ago
Switzerland, announced on 6 Â November that they had found traces of the radioactive metal polonium-210 in the exhumed body of Yasser Arafat, former president of the Palestinian National Authority.
Five days after the closure, the Carlsbad Environmental Monitoring and Research center at New mexico State university announced that it had elevated found levels of radioactive plutonium and americium at an independent air-sampling station nearly 1 â°kilometre
Fukushima water Radioactive cooling water stored at the destroyed Fukushima Daiichi nuclear power plant might need to be dumped into the sea.
but preliminary tests suggest that they inhaled radioactive particles. Energy department officials said the health and environmental impacts of the leak seem to be minor,
The plant is not radioactive it s only accelerated evolution with human selection. The wisdom in human selection is the greatest risk factor here. tmarti69 As the Earth is currently in the beginnings of a magnetic polar flip with a ongoing to zero reduction of magnetic field more wild life will be subject to the the sun comsic radays
The same neutrinos that start the chain reaction in fissile material can also be used to reduce the radioactive cores in nukes to something that would not go critical.
However neutrinos do react with radioactive material. A powerful enough neutrino beam would start to strip neutrons off of fissile material without causing the material to go critical.
The technique looks at the radioactive carbon in the ivory which elephants and every other living creature on earth incorporated into their bodies in unusually high levels during the Cold War era.
and geologists from the U s. Kenya and the U k. use mass spectrometry to determine the amount of carbon-14 a rare radioactive isotope of carbon appears in an animal tissue.
I read somewhere that coal fire power plants release more radiation (in the form of radioactive impurities being vaporized) into the atmosphere every year than all nuclear power plants ever (including meltdowns.
/id=hcf@Listenup 1. Coal Ash Is More Radioactive than Nuclear Waste http://www. scientificamerican. com/article. cfm?
id=coal-ash-is-more-radioactive-than-nuclear-waste2. I do agree we shall go for clean renewable energy
You don't seem to realize that there are only TWO events in all of history that actually spread any significant amount of radioactive particles into the atmosphere from nuclear reactors-Chernobyl
By contrast coal-fired power plants release higher quantities of radioactive isotopes directly into the atmosphere than even the oldest nuclear reactors ever did.
Just Google radioactive coal ash (without quotes) and you'll learn the truth about coal.
They won't become any less radioactive just by getting a little hot. The nuclear dream is fading fast.
Fukushima is expected by Dr. Helen Caldicott M d. to cause at least 1 million deaths by cancer due to radioactivity already released.
If a Magnitude 8 earthquake strikes Japan before a fuel pool dangling 100 feet in the air is secured the resulting radioactivity is expected to be at least 40 times that of Chernobyl causing untold millions of cancers across the Northern hemisphere.
Radioactive particles especially Plutonium Strontium and Cesium are bioaccumulative extremely persistent and highly toxic. They travel long distances
or that there isn't radioactive waste in the groundwater near your home or there aren't chemtrail distributed weather modification chemicals in rainwater.@
or that there isn't radioactive waste in the groundwater near your home or there aren't chemtrail distributed weather modification chemicals in rainwater.
but genetically modified food doesn't contain cyanide there isn't radioactive waste in the groudwater near my home
Where is Scythelord's proof that their is no radioactive contamination in groundwater near where they live?
instead in the amount of radioactive carbon trapped in the annual growth rings of some of the world's oldest trees.
Carbon's key radioactive isotope carbon-14 forms when energetic particles enter Earth's atmosphere
So the formation of radioactive isotopes isn't a steady process? This could cause us to change our assumptions about dating methods.
#German Boars Are Too Radioactive To Eatin Germany boar meat is considered a delicacy consumed in various forms such as salami and boar leg.
According to the Telegraph recent testing in the state of Saxony has revealed that more than one-in-three wild boar in Germany are so radioactive that they're considered unfit for human consumption.
More than 28 years ago a reactor exploded at the Chernobyl Nuclear power Plant in Soviet-run Ukraine releasing radioactive particles into the atmosphere.
but various weather conditions helped the radioactive particles spread far into Western europe contaminating much of the ground soil.
Apparently researchers have been cataloguing this pattern of boar radioactivity for some time and they don t believe it ll go away any time soon.
By measuring radioactive carbon-14 deposited in tusks and teeth by open-air nuclear bomb tests the method reveals the year an animal died
That potential exists they say despite serious questions about safety disposal of radioactive waste and diversion of nuclear material for weapons.
That potential exists they say despite serious questions about safety disposal of radioactive waste and diversion of nuclear material for weapons.
Radioactive dating methods are only accurate over a certain time span said Rokas. We think that the value of DNA data might have a similar limit posing considerable challenges to existing algorithms to resolve radiations that took place in deep time.
Radioactive dating methods are only accurate over a certain time span said Rokas. We think that the value of DNA data might have a similar limit posing considerable challenges to existing algorithms to resolve radiations that took place in deep time.
The evidence of its existence would be revealed by measuring how the axis of nuclei of the radioactive elements radon
The paper is titled Studies of nuclear pear-shapes using accelerated radioactive beams. Story Source: The above story is provided based on materials by University of Michigan.
#Graphene oxide soaks up radioactive waste: U s.,Russian researchers collaborate on solution to toxic groundwater woesgraphene oxide has a remarkable ability to quickly remove radioactive material from contaminated water researchers at Rice university
and Lomonosov Moscow State university have found. A collaborative effort by the Rice lab of chemist James Tour and the Moscow lab of chemist Stepan Kalmykov determined that microscopic atom-thick flakes of graphene oxide bind quickly to natural and human-made radionuclides
The researchers focused on removing radioactive isotopes of the actinides and lanthanides--the 30 rare earth elements in the periodic table--from liquids rather than solids or gases.
and it's radioactive above a certain level they can't put it back into the ground he said.
Tour said that capturing radionuclides does not make them less radioactive just easier to handle.
Where you have huge pools of radioactive material like at Fukushima you add graphene oxide
Graphene oxide burns very rapidly and leaves a cake of radioactive material you can then reuse.
Is the methane contamination observed in drinking water a precursor to other toxins--arsenic various salts radioactive radium
PET scans require the use of radioactive tracers and cerebrospinal fluid analysis requires that patients undergo invasive
To trace the sugars the scientists first had to add a radioactive tag to these molecules.
When they administered this labeled CO2 to plant leaves the plants incorporated the radioactive carbon into sugars via photosynthesis. The scientists then tracked the labeled sugars throughout the plant using detectors placed along the plant stem.
The resulting buildup of dry loose detritus is a wildfire hazard that poses the threat of spreading radioactivity from the Chernobyl area.
which exploded and released large quantities of radioactive compounds in the Ukraine region of the Soviet union in 1986.
and fungi that decompose plant matter in healthy ecosystems are hindered by radioactive contamination. They showed a smaller effect for small invertebrates such as termites that also contribute to decomposition of plant biomass.
It's another facet of the impacts of low-dose-rate radioactive contaminants on the broader ecosystem Mousseau says.
The results also show the potential for further spread of radioactivity. There's been growing concern by many different groups of the potential for catastrophic forest fires to sweep through this part of the world
and redistribute the radioactive contamination that is in the trees and the plant biomass Mousseau says.
We will draw the map to show the movement of radioactivity. This will help reveal the long term effects of radiation on animals as well as how radiation spreads in the forest as it transfers between animals and plants.
and other radioactive elements not commonly found in nature thanks to our nuclear weapons testing. And we have created some new compounds that will be in the geologic record for a long time to come, the most ubiquitous
All that radioactivity?!Forget it! The more hotheaded types-of which there are many-would chose spicier words.
Coal operators are allowed to do this under naturally occurring radioactive materials (NORM) exemptions. But back to the brochure.
The radioactive decay of Earth's core provides much of the heat that keeps us alive on the planet.
one Sukagawa farmer noted that the government approves of shipments of food that test below 100 becquerels (units of radioactivity) per kilogram,
 While natural iodine from some seafood helps cancel out the radioactive iodine in fast-moving fish
which are known to concentrate radioactive iodine, â Â she says, as opposed to the healthy,
an independent consultant on radioactivity in the environment who is closely monitoring Fukushima says that Japanese should fear radiation just not necessarily in the region food. â Å Contaminated food intakes are a relatively small part of the problem.
But a person can t just eat a radioactive chemical and hope to be healthy,
< Back - Next >
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011