Sentences with phrase «higher uranium»

The higher uranium price reflects the need to move to ever deeper mines, which increases the energy needed to extract the ore, and the shift to lower - grade ore.

This good news hasn't translated into higher uranium share prices, however, as the industry continues to choke on excess supply as I

Only during the second marked increase in atmospheric oxygen content 600 million years ago did the deep ocean become fully oxidised, which allowed the oceanic crust to gain the «fingerprint» of high uranium - 238.

Clearly not all pyrites, framboidal or otherwise, contain high uranium, so understanding what controls uranium uptake in pyrite is a crucial next step.

Not exact matches

Black Range Minerals shares closed on a high today on news it had received a takeover proposal from Canadian - based Western Uranium Corporation for all of the company's shares.

Its motherlode consists of extraordinarily high - grade uranium deposits in Saskatchewan: the McArthur River and Cigar Lake deposits account for roughly 80 % of its proven and probable reserves.

Iran would have to enrich uranium at much higher levels to produce a weapon.

Demonstration of High Performance in Layered Deuterium - Tritium Capsule Implosions in Uranium Hohlraums at the National Ignition Facility

Uranium as a commodity was basically forgotten about until it marched up to a record high price above $ 130 USD / lb in 2007.

Iran has again offered to halt its enrichment of uranium to 20 percent, which the United States has identified as its highest priority in the nuclear talks, in return for easing sanctions against Iran.

Facebook, when not stealing your data to help the Russians tell you that Hillary Clinton is selling uranium to children in the basement of a pizza place, is a great place for the people from your high school who used to smoke things they found in ditches to scream about wisdom.

«This makes the uranyl moiety very important, but also the universal view that the ITI was a niche concept of limited applicability dominated because it was restricted to high oxidation state actinide metals like uranium.

The competing SFR design banks on a novel fission concept: bombarding uranium atoms with neutrons of much higher energy than those used in a traditional nuclear plant.

Scientists view angrites as exceptional recorders of the early solar system, particularly as the rocks also contain high amounts of uranium, which they can use to precisely determine their age.

All reactors produce energy by splitting the nuclei of heavymetal (high - atomic - weight) atoms, mainly uranium or elements derived from uranium.

This will permit the average terrestrial concentrations of uranium and thorium to be 2 to 4.7 times higher than that observed in chondrites.

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.

These CAIs (calcium, aluminum - rich inclusions) are known to have a low abundance of uranium and likely to have high curium abundance.

Transuranic elements have an atomic number at least as high as uranium.

In 1951 we headed for Rum Jungle, where a uranium boom was on, but halfway there we stopped in Kaniva, another boomtown, with a whaling station and high - paying jobs.

As the atoms decay, they release high - speed helium nuclei and then become smaller uranium atoms.

In particular, the researchers found that a higher ratio of uranium - 238 to uranium - 235 is incorporated into the modern oceanic crust, when compared to the uranium isotope signature found in meteorites.

Her research shows that high - pressure fluids striking the shale could dislodge naturally occurring radioactive compounds such as uranium and strontium, putting groundwater at risk of contamination.

If the concentration of hydrogen rises high enough, flammable uranium hydride (UH3) will start to form instead of the oxide.»

Study co-author Heye Freymuth of the University of Bristol explains: «Although uranium was incorporated into the oceanic crust since the initial rise in atmospheric oxygen about 2.4 billion years ago, the ocean crust did not incorporate higher amounts of uranium - 238 as the oceans did not yet have adequate supplies of oxygen.»

«There is depleted uranium in a lot of armor - piercing munitions,» he said, «so places like the Middle East that are experiencing war could be exposed to high levels of uranium in the groundwater.»

According to Weber, peer - reviewed studies have also indicated that food crops can accumulate uranium when irrigated by water containing high concentrations of it.

UNL researchers Karrie Weber and Jason Nolan found that the High Plains aquifer contains uranium concentrations up to 89 times the EPA standard and nitrate concentrations up to 189 times greater.

Data from roughly 275,000 groundwater samples in the High Plains and Central Valley aquifers show that many Americans live less than two - thirds of a mile from wells that often far exceed the uranium guideline set by the Environmental Protection Agency.

Radiation may also have led to a high incidence of cancer in those who witnessed early nuclear tests or have been in contact with depleted uranium munitions, though a recent study contests this risk.

Soldiers who inhale or swallow high levels of depleted uranium (DU) on the battlefield could suffer kidney failure within days, according to a new report from the one of the UK's premier scientific bodies, the Royal Society.

«Kidney uranium levels in some of these soldiers could be very high and would probably lead to kidney failure within a few days of exposure,» the report warns.

According to Global Nuclear Fuels, the GNF2 design delivers higher energy output whilst cutting overall fuel cycle costs, reducing the total amount of uranium and the average enrichment in fuel reloads.

Interestingly he does discuss uranium, but not as a fuel (he thinks it would maybe emit X-rays if he shot high energy electrons at it).

One interesting feature of the synthesis of heavy elements by neutron capture at a high rate in a supernova explosion is that nuclei much heavier than lead or even uranium can be fashioned.

The health literature confirming the links between radon and health include studies of many uranium mining populations, as well as other mining districts and mineralized areas with high levels of naturally occurring radiation sources.

A measure of the effort expended in a uranium enrichment plant to separate uranium of a given U235 content into two components, one having a higher percentage of U235 and the other a lower concentration.

(Again) to High - Level Waste at WIPP; Reclaiming the Land: History of Uranium Mill Tailings Clean - up; Mitchell Capitan & Eastern Navajo Diné Against Uranium Mining Take Their Message to the International Stage; Karamken: An Abandoned Gold Facility Shows Need for Reclamation in Russia; Harris Arthur is SRIC's New Navajo Community Liason

We have measured through experiments that the chances that a neutron will cause a capture rather than a fission in Uranium - 238 are high at thermal energies and become smaller at faster energies.

Past and ongoing research has demonstrated that bioreduced sediment has higher amounts of uranium, Fe (II), organic carbon and sulfides.

Historically, U.S. uranium enrichment policy has kept the U-235 content of UET relatively high, in the 0.3 - 0.35 % range rather than 0.2 - 0.25 %.

«We are trying to determine what kind of minerals in soil have a higher affinity for uranium; that is, what it will stick to,» said Dr. Nikolla Qafoku, a PNNL geochemist, who with Dr. Ravi Kukkadapu, an EMSL chemist, is lead author of the paper, which appears in Environmental Science & Technology.

A uranium enrichment process in which the rotor of the centrifuge machine, containing uranium hexa - fluoride gas, spins at high speed inside a vacuum casing.

After conversion of the university reactor at Texas A&M to Low Enriched Uranium (LEU) fuel, NAC provided one NAC - LWT cask for the transport of 84 irradiated High Enriched Uranium (HEU) TRIGA type fuel assemblies to the DOE site of Idaho National Laboratory (INL).

«Uranium mines and mills may have caused birth defects among Navajo Indians,» High Country News, February 4, 1985.

Muons, Inc., a private - sector high - energy accelerator physics firm, and ADNA (Accelerator - Driven Neutron Applications) Corp., are proposing using spent nuclear fuel (SNF), natural uranium, or excess weapons - grade plutonium (W - Pu) in a proposed GEM * STAR accelerator - driven subcritical reactor (ADSR) to provide... Read more →

«In New Mexico's uranium belt: Rebottling the nuclear genie,» Steve Hinchman, High Country News, Vol.

Recent testing exceeded 6 grams of uranium per kilogram of adsorbent after 56 days in natural seawater — an adsorbent capacity that is 15 percent higher than the results highlighted in the special edition.

The Uranium from Seawater program continues to make significant advancements, producing adsorbents with even higher capacities for grabbing uUranium from Seawater program continues to make significant advancements, producing adsorbents with even higher capacities for grabbing uraniumuranium.

Because 235U decays faster than the more abundant 238U, a higher percentage of uranium would have been 235U in the past.