Anagramas & Informações Sobre | Palavra Inglês ACTINIDES

Exemplos de uso de ACTINIDES em uma frase

• This period contains the actinides, which includes plutonium, the naturally occurring element with the heaviest nucleus; subsequent elements must be created artificially.
• It is the chemistry of radioactive elements such as the actinides, radium and radon together with the chemistry associated with equipment (such as nuclear reactors) which are designed to perform nuclear processes.
• Compared to other ultra-metal-poor, r-process enriched stars (as CS22892-052, BD +17° 3248, HE 1523-0901) CS31082-001 has higher abundances of the actinides (Th, U), but a surprisingly low Pb abundance.
• For transition metals the orbitals of the incomplete (n−1)d subshell are included, and for lanthanides and actinides incomplete (n−2)f and (n−1)d subshells.
• From the image, the group 1–2 metals and the lanthanides and actinides are very electropositive to electropositive; the transition metals in groups 3 to 12 are very electropositive to electronegative; and the post-transition metals are electropositive to electronegative.
• They permit nuclear fuels to be bred from almost all the actinides, including known, abundant sources of depleted uranium and thorium, and light-water reactor wastes.
• Ion-exchange processes are used to separate and purify metals, including separating uranium from plutonium and the other actinides, including thorium, neptunium, and americium.
• Partitioning and transmutation, a succession of chemical separation operations (advanced reprocessing) and neutron irradiation repeated in long nuclear fuel cycles aimed at reducing the radiotoxicity of minor actinides and long-lived fission products.
• The heavier actinides, primarily americium and curium, and the fission products remain in the aqueous phase.
• The superheavy elements are those beyond the actinides in the periodic table; the last actinide is lawrencium (atomic number 103).
• The American IFR (Integral Fast Reactor) can also be operated in an incineration mode, having some advantages in not accumulating the plutonium-242 isotope or the long-lived actinides, which cannot be easily burned except in a fast reactor.
• As a fast breeder reactor, the proposed DFR reactor is designed to burn both natural uranium or thorium, as well as transmutating and fissioning minor actinides.
• The minor actinides include neptunium (element 93), americium (element 95), curium (element 96), berkelium (element 97), californium (element 98), einsteinium (element 99), and fermium (element 100).
• Major actinides is a term used in the nuclear power industry that refers to the isotopes of plutonium (239 Pu) uranium (235 U, 238 U) and thorium (232 Th) present in nuclear fuel, as opposed to the minor actinides neptunium, americium, curium, berkelium, and californium, including other isotopes of uranium and plutonium and other actinides.
• When looking at long-term radioactive decay, the actinides in the SNF have a significant influence due to their characteristically long half-lives.
• Uranium tetrachloride melts dissolved in a lithium chloride–potassium chloride eutectic have also been explored as a means to recover actinides from irradiated nuclear fuels through pyrochemical nuclear reprocessing.
• Nuclear waste long-lived radionuclides such as actinides are immobilized using chemically-durable crystalline materials based on polycrystalline ceramics and large single crystals.
• Most of the bromides of the pre-transition metals (groups 1, 2, and 3, along with the lanthanides and actinides in the +2 and +3 oxidation states) are mostly ionic, while nonmetals tend to form covalent molecular bromides, as do metals in high oxidation states from +3 and above.
• In nuclear chemistry, the actinide concept (also known as actinide hypothesis) proposed that the actinides form a second inner transition series homologous to the lanthanides.
• SWPF will use specific processes that have been developed at Oak Ridge National Laboratory and Argonne National Laboratory using annular centrifugal contactors and that will be the state-of-the-art methods to target the removal of cesium-137, strontium-90, and actinides from SRS salt wastes.

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