Sentences with phrase «of radioactive chemicals»

In a study published in the August edition of the journal Diabetes, Weibo Cai, Matthew J. Merrins and colleagues used a PET scanner to detect minute levels of a radioactive chemical in the mouse pancreas.

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.

Securing dangerous or controlled substances: Businesses in a wide range of industries use biometric devices — with hand - readers being a particularly popular option — to help monitor access to toxic chemicals, radioactive waste, narcotic drugs and other potentially hazardous materials.

But in this Gilead, Atwood has imagined a time when our nightmares about the perils of toxic waste, radioactive fallout, chemical and biological warfare, nuclear sabotage and the building

The generation enjoying the benefits of producing chemical and radioactive waste should consider investing a portion of today's profits in an endowment fund, gathered perhaps from a pollution tax.

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.»

Using a small amount of a radioactive substance as a tracer, the scientists focused on the brain's mu - opioid system in which chemicals called endogenous opioids bind to receptors and hinder the spread of pain messages in the brain.

In a new study, Scripps Institution of Oceanography at the University of California San Diego Professor James Day and colleagues examined the chemical composition of zinc and other volatile elements contained in the green - colored glass, called trinitite, which were radioactive materials formed under the extreme temperatures that resulted from the 1945 plutonium bomb explosion.

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.

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.

A product we developed for animals plays a role in protecting all of us from nuclear mishaps: Cat litter is often used to absorb and stabilize volatile radioactive chemicals stored in nuclear waste facilities.

Previous studies have shown that fracking fluids contain high levels of salts, barium and radioactive elements, in addition to human - made chemicals added in the process of hydraulic fracturing.

«Glass is a perfect material for immobilizing the radioactive wastes with excellent chemical durability,» said Goel, who works in the School of Engineering.

Potentially even more dangerous than radioactive isotopes, Higley suggests, might be the debris and scattered chemicals left in the wake of the earthquake and tsunami.

While researching the disintegration of radioactive elements with Ernest Rutherford, Soddy in 1910 observed that elements of different atomic weights sometimes had the same chemical properties.

These plans are designed to be safe based on physical and chemical barriers that will stop radioactive material from escaping for hundreds of thousands of years.

Lord Henley, the junior defence minister, tells me that he and his senior officials are busily classifying these MOD sites according to whether they were once used for radioactive processes such as radium luminising, or as part of a former chemical warfare programme, or were just subject to extreme flooding.

Now, using precise chemical measurements of seafloor rock and moon samples, scientists have shown that nearby supernovas rained down radioactive iron and potentially influenced life on Earth.

At the Hanford nuclear site in eastern Washington, the U.S. Department of Energy (DOE) is building the world's largest radioactive waste treatment plant for cleanup of 56 million gallons of radioactive and chemical waste.

Scientists have long used an imaging technique called positron emission tomography (PET) to visualize ß - amyloid deposits marked by radioactive chemical tags in the brains of people with AD.

Low energy electrons are ubiquitous and are known to play important role in variety of phenomena relevant to astrochemistry (where they participate in synthesis of new molecules), in radiation biology (where they cause chemical changes in living cell, plasma chemistry), atmospheric chemistry, radioactive waste management and nanolithography — to name but a few.

Pound for pound, nuclear explosives — which derive their power from runaway chain reactions in their radioactive fuel — carry about a million times the energy density of chemical explosives.

This type of imaging uses a radioactive tracer to look for chemical signs of disease in specific tissues.

Nitrate mobilizes naturally occurring uranium through a series of bacterial and chemical reactions that oxidize the radioactive mineral, making it soluble in groundwater.

«We've developed a chemical technique, based on a new discovery in gold chemistry, that lets us attach a radioactive fluorine atom to a specific class of molecule that was previously challenging to do,» Levin said.

Flourine - 18 has a half - life of about 110 minutes, which means its radioactive output is halved every 110 minutes, and the chemical processes incorporating it as a label must be designed to rapidly attach it to compounds of interest.

When the U.S. military abandoned Camp Century, a complex of tunnels dug into the ice of northwest Greenland, in the mid-1960s, they left behind thousands of tons of waste, including hazardous radioactive and chemical materials.

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.

The increase in medical radiation exposure (from 0.53 mSv to 3.0 mSv) stemmed primarily from a rise in the use of computer tomography (CT) scans (which use x-rays to create cross sectional images of inside the body to spot tumors, clogged arteries, among other things), and nuclear imaging tests, which involve injecting radioactive chemicals into the bloodstream that can be picked up by special instruments and used to create images of the body's inner structures.

I've always thought our exposure to chemicals was nowhere comparable to that of a radiologist, for example, who deals with x-rays and radioactive tracers 10 hours a day.

A team of Chinese and American researchers found the chemical fingerprint of a radioactive variety of chlorine — chlorine - 36 — embedded within a pocket of the Ningqiang meteorite.

Order from (first copy free of charge): American Chemical Society Publications Support Services 1155 16th Street, NW Washington, DC 20036 phone: [phone] or 800-227-5558 email: [email protected], www.acs.org/education 2) General Howard Hughes Medical Institute as a resource forn working with cell cultures, radioactive materials and other laboratory materials.

With the IDF money, Mariella has been able to obtain non-radioactive chemicals that act as surrogates for the radioactive isotopes of elements that are likely to contaminate a surface, and is planning to conduct tests.

They detected nickel 60, the product of the radioactive decay of iron 60, in chemical compounds where, by rights iron should be found.»

Dr. Boardman's career at the INL includes technical leadership thermal treatment of radioactive wastes and modeling and simulation of carbon conversion to power, synthetic fuels, chemicals, and hydrogen.

Using the known decay rates of various radioactive isotopes, he investigates the chronology of early processes on small planetary objects and studies the chemical and physical aspects of old and young crust - forming processes on Earth.

He led the invention and chemical development of the Caustic Side Solvent Extraction process to remove nearly all radioactive cesium from high - level waste tanks.

However, stress and environmental endocrine disruptors also affect hormone production, and these chemicals — the most infamous being BPA — are not found in remote, radioactive plants, but in everyday items that most of us touch regularly.

DefinitionSamarium — neodymium dating uses the radioactive decay of 147Sm to 143Nd and 146Sm to 142Nd to measure the age of rocks and minerals and to trace and date geochemical processes responsible for the chemical differentiation of the Earth and the terrestrial planets and to the geochemical and cosmochemical communities in the early 1970s, the Sm — Nd radioactive decay systems have grown into essential tools in geochronology and particularly for the Sm - Nd dating of gabbro - and garnet - bearing contact metamorphic / anatectic rocks from Krutfjellet, Nordland, and some geochemical aspects of the intrusives

Inorganic chemicals, compounds of precious metals, rare earth metals, radioactive elements or isotopes

There is a large, well known chemical company that was once under contract with the U S Department of Energy that insisted the best way to process millions of gallons of very high level radioactive waste was to add a complex organic molecule to million gallon underground waste tanks.

«This year, we will press the United States and other nations to exert strong leadership in advancing an agenda that extends beyond whaling to the broader range of threats that imperil whales throughout our oceans, including ship strikes, chemical and noise pollution, entanglement, oil spills, radioactive contamination, emerging diseases and climate change,» says Kitty Block, HSI vice president, who will be attending the IWC meeting for the 14th time.

It is a future in which the IWC plays a primary role in the health and protection of our oceans, a future in which the body exerts greater leadership in respect to the raft of threats that jeopardize all marine life, whether it be oil spills, radioactive contamination, entanglement in fishing gear and marine debris, ship strikes, chemical and noise pollution, emerging diseases, climate change or all of these cumulatively and synergistically.

This included fracking wastewater that state officials had allowed to be dumped at local sewer plants — facilities incapable of removing the complex mix of chemicals, corrosive salts, and radioactive materials from that kind of industrial waste before they piped the «treated» water back into Pennsylvania's rivers.

«Nuclear waste remains radioactive for thousands of years and the nuclear industry has not come up with a technological process to deal with this highly toxic waste and similarly as toxic chemical industry dump their waste in the ground, so does the nuclear industry.

Major Environmental Issues: air pollution from heavy industry, emissions of coal - fired electric plants, and transportation in major cities; industrial, municipal, and agricultural pollution of inland waterways and sea coasts; deforestation; soil erosion; soil contamination from improper application of agricultural chemicals; scattered areas of sometimes intense radioactive contamination; ground water contamination from toxic waste.

Researchers of a new study published in the journal Geophysical Research Letters on Aug. 4 said that the military camp's infrastructure, which include the remaining biological, radioactive and chemical wastes, could re-enter the environment and disrupt nearby ecosystem because of climate change.

We used observations of inert and radioactive chemical constituents («tracers») to estimate the rates at which the ocean transports material from the surface to the interior.

War or any act of war, invasion, act of foreign enemy, war like operations, civil war, public defense, rebellion revolution, insurrection, military or usurped acts, riot, terrorism, chemical, radioactive or nuclear contamination.

Nuclear medicine technologists prepare, administer and measure various levels of chemicals used to create radioactive materials for imaging or therapeutic purposes.