actinide


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Actinide

Any of the 15 metallic elements with an atomic number between 89 and 103, which fill the 5f electron shell.
Actinides 89Ac, 90Th, 91Pa, 92U, 93Np, 94Pu, 95Am, 96Cm, 97Bk, 98Cf, 99Es, 100Fm, 101Md, 102No, 103Lr

actinide

(ak′tĭ-nīd″) [ actin- + -ide]
Any of the radioactive heavy metals designated on the periodic table of elements with atomic numbers 89–103. The actinides include naturally occurring elements, e.g., actinium and uranium, and artificial elements, e.g., fermium.
References in periodicals archive ?
The study indicates the presence of actinide based archaea with an alternate actinide based enzymes or metalloenzymes in the system as indicated by rutile induced increase in enzyme activities [11].
Moreover, REE have been used, as analogues for actinide elements, in studies related to radioactive waste disposal in order to demonstrate their general immobility in weathering environments [15].
MST is currently used in the Actinide Removal Process (ARP) at the Savannah River Site in a batch contact process in which the solid is added as an aqueous suspension to the waste solution in a well-mixed reactor.
The autistic, schizophrenic and nair population have increased actinide dependent cytochrome F420 activity suggestive of endosymbiotic archaeal growth.
Specific topics of the 20 papers include the significance of nuclear fuel in this century, advanced separation processing of spent nuclear fuel using geologic repositories, dissolution of irradiated nuclear fuel from the Big Rock Point reactor, haze formation and behavior in liquid-to-liquid extraction processes, plutonium peroxide in process chemistry, potential applications of Klaui ligands in actinide separations, applications of ionic liquids in actinide and fission product separations, and the influence of simple organic ligands on the partitioning mechanism of trivalent lanthanum to Goethite.
Tc-99 discharges arise when medium active concentrate (MAC) from Magnox reprocessing is treated in the Enhanced Actinide Removal Plant (EARP).
Fifth-three papers from the November 2005 symposium present new developments in solid-state theory and recent experiments in actinide metals and actinide chemistry.
Endomyocardial fibrosis along with the root wilt disease of coconut is endemic to Kerala with its radioactive actinide beach sands.
The energy of the deformed nuclei in the actinide region has been determined in the frame work of the macroscopic--microscopic approach.
Lumi4 complexes are a new class of metal lanthanide and actinide chelators based on technology patented by Professor Kenneth N.