High Quality Content by WIKIPEDIA articles! UBP-302 is a highly selective Kainate receptor antagonist used in the study of many neurological processes. It is active at micromolar concentration within an in vitro preparation and specifically targets the GluR5 subunit of the receptor. This compound was developed at the University of Bristol.
High Quality Content by WIKIPEDIA articles! The Undersea and Hyperbaric Medical Society (UHMS) is the primary source of information for diving and hyperbaric medicine physiology worldwide.
High Quality Content by WIKIPEDIA articles! Ununpentium is the temporary name of a synthetic superheavy element in the periodic table that has the temporary symbol Uup and has the atomic number 115.
High Quality Content by WIKIPEDIA articles! Ununseptium is the superheavy artificial chemical element with temporary symbol Uus and atomic number 117. The element, also known as eka-astatine or simply element 117, is the second-heaviest of all the elements that have been reportedly created so far and is the second-to-last element of the 7th period of the periodic table. Its discovery was first announced in 2010—synthesis was claimed in Dubna, Russia, by a joint Russian–American collaboration, thus making it the most recently discovered element. Another experiment in 2011 created one of its daughter isotopes directly, partially confirming the results of the discovery experiment, and the same experiment that was reportedly used to...
High Quality Content by WIKIPEDIA articles! Ununtrium is the temporary name of a chemical element with the temporary symbol Uut and atomic number 113. It is an extremely radioactive synthetic element (an element that can be created in a laboratory but is not found in nature); the most stable known isotope, ununtrium-286, has a half-life of 20 seconds. Ununtrium was first created in 2003 by the Joint Institute for Nuclear Research in Dubna, Russia.
High Quality Content by WIKIPEDIA articles! UR-AK49 is a drug used in scientific research which acts as a potent antagonist for the Neuropeptide Y / Pancreatic polypeptide receptor Y4, and also as a partial agonist at the histamine receptors H1 and H2. UR-AK49 is a pure antagonist at Y4 with no partial agonist effects, and although it is only slightly selective for Y4 over the related Y1 and Y5 receptors, as the first non-peptide Y4 antagonist developed UR-AK49 is expected to be useful in the study of this receptor and its role in the body.
High Quality Content by WIKIPEDIA articles! A uranate is a ternary oxide involving the element uranium in one of the oxidation states +4, +5 or +6. A typical chemical formula is MxUyOz, where M represents a cation. The uranium atom in uranates(VI) has two short, co-linear, U-O bonds and either four or six more next nearest oxygen atoms. The structures are infinite lattice structures with the uranium atoms linked by bridging oxygen atoms. "Ammonium diuranate" is an intermediate in the production of uranium oxide nuclear fuels.
High Quality Content by WIKIPEDIA articles! Uranium-235 is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238 it is fissile, i.e., it can sustain fission chain reaction. It is the only fissile isotope that is a primordial nuclide or found in significant quantity in nature.
High Quality Content by WIKIPEDIA articles! Uranium nitride refers to a family of several ceramic materials: uranium mononitride (UN), uranium sesquinitride (U2N3) and uranium dinitride (UN2). Nitride refers to -3 oxidation state of the nitrogen bound to the uranium. The nitrogen gets its -3 oxidation state from the nature of the triple bond that uranium forms with nitrogen in uranium nitride compounds. The Uranium mononitride has been considered as a potential nuclear fuel for the new Generation IV reactors. It is chosen specifically for its fissionable density and its superior thermal and radiation stability. Uranium nitride (enriched to less than 20% 235U) is the fuel chosen by Hyperion Power Generation to fuel their recently revised...
High Quality Content by WIKIPEDIA articles! Uranium depletion is the result of extracting and consuming uranium, a non-renewable resource. The availability of high-grade uranium ore will deplete over time meaning the fuel will become more environmentally and economically expensive to extract.
High Quality Content by WIKIPEDIA articles! Uranium-238 (238U or U-238) is the most common isotope of uranium found in nature. It is not fissile, but is a fertile material: it can capture a slow neutron and after two beta decays become fissile plutonium-239. 238U is fissionable by fast neutrons, but cannot support a chain reaction because inelastic scattering reduces neutron energy below the range where fast fission is probable.
High Quality Content by WIKIPEDIA articles! Uranium mining in Arizona has taken place since 1918. Prior to the uranium boom of the late 1940s, uranium in Arizona was a byproduct of vanadium mining of the mineral carnotite.
High Quality Content by WIKIPEDIA articles! After the end of World War II, the United States encouraged uranium mining production because of the nuclear arms race with the U.S.S.R., its opponent in the Cold War. Large uranium deposits were found on and near the Navajo Reservation in the Southwest, and private companies hired many Navajo employees to work the mines. Disregarding the known health risks imposed by exposure to uranium, the private companies and the United States Atomic Energy Commission failed to inform the Navajo workers about the dangers and to regulate the mining to minimize contamination. As more data was collected, they were slow to take appropriate action for the workers.
High Quality Content by WIKIPEDIA articles! Uranium mining in the United States is the extraction of uranium-bearing ore from the earth, or In-situ leach recovery involving the extraction of uranium-bearing liquids. While uranium is used primarily for nuclear power, uranium mining had its roots in the production of uranium-bearing ore in 1898 with the mining of carnotite-bearing sandstones of the Colorado Plateau in Colorado and Utah, for their vanadium content. The late 1940s and early 1950s saw a boom in uranium mining in the western U.S., spurred by the fortunes made by prospectors such as Charlie Steen. The United States was the world`s leading producer of uranium from 1953 until 1980, when annual U.S. production peaked at 16,810...
High Quality Content by WIKIPEDIA articles! Uranium-233 is a fissile isotope of uranium that is bred from thorium-232 as part of the thorium fuel cycle. Uranium-233 was investigated for use in nuclear weapons and as a reactor fuel; however, it was never deployed in nuclear weapons or used commercially as a nuclear fuel. It has been used successfully in experimental nuclear reactors and has been proposed for much wider use as a nuclear fuel. It has a half-life of 159,200 years.
High Quality Content by WIKIPEDIA articles! Uranium ore deposits are economically recoverable concentrations of uranium within the Earth`s crust. Uranium is one of the more common elements in the Earth`s crust, some 40 times more common than silver and 500 times more common than gold. It can be found almost everywhere in rock, soil, rivers, and oceans. The challenge is to find those areas where the concentrations are adequate to form an economically viable deposit.
High Quality Content by WIKIPEDIA articles! Uranium mining in Colorado, United States, goes back to 1872, when pitchblende ore was taken from gold mines near Central City, Colorado. The Colorado uranium industry has seen booms and busts, but continues to this day. Not counting byproduct uranium from phosphate, Colorado is considered to have the third largest uranium reserves of any US state, behind Wyoming and New Mexico.