نتایج جستجو برای: coinage
تعداد نتایج: 613 فیلتر نتایج به سال:
Seriation was one of the earliest applications computers to an archaeological problem. Despite origins technique in numismatics, vast majority coinage studies manually sequence coin hoards and issues. For many periods, designs or legends can be used provide a date. Republican series, however, detailed sequences rely on use hoard data. In recent years, Correspondence Analysis has become de f...
CO adsorption on NO(2)-predosed Au[111] reveals an unexpected attractive coadsorbate interaction, associated with an unprecedented blueshift of the CO stretch frequency, a sizeable attenuation of the infrared NO(2) symmetric stretch band, and a (sq.rt(7) x sq.rt(7))R19 degrees structure characterized by scanning tunneling microscopy and low energy electron diffraction. Density functional calcul...
The infinite-order regular approximation (IORA) and IORA with modified metric (IORAmm) is used to develop an algorithm for calculating relativistically corrected isotropic hyperfine structure (HFS) constants. The new method is applied to the calculation of alkali atoms Li-Fr, coinage metal atoms Cu, Ag, and Au, the Hg(+) radical ion, and the mercury containing radicals HgH, HgCH(3), HgCN, and H...
Contributing to the need for new graphene nanoribbon (GNR) structures that can be synthesized with atomic precision, we have designed a reactant that renders chiral (3,1)-GNRs after a multistep reaction including Ullmann coupling and cyclodehydrogenation. The nanoribbon synthesis has been successfully proven on different coinage metals, and the formation process, together with the fingerprints ...
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