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Yasuyuki Ishikawa

Researcher at University of Puerto Rico

Publications -  236
Citations -  7553

Yasuyuki Ishikawa is an academic researcher from University of Puerto Rico. The author has contributed to research in topics: Fock space & Ion. The author has an hindex of 46, co-authored 236 publications receiving 7172 citations. Previous affiliations of Yasuyuki Ishikawa include University of Puerto Rico, Río Piedras & University of Puerto Rico at Mayagüez.

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Relativistic multireference Møller-Plesset perturbation theory calculations on the term energy and lifetime of the 5So2 state in siliconlike ions with Z = 28-79

TL;DR: In this paper, a relativistic multireference Meller?Plesset perturbation theory was employed to calculate accurately the energies of lowest even-parity 3s23p2 3P0,1,2 and 3s 23p2 1D2, and odd-pararity 3s3p3 5S2o states of ions in the silicon isoelectronic sequence.
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Theoretical study of microscopic solvation of LiCl in water clusters: LiCl(H2O)n (n=1–4)

TL;DR: In this paper, a number of low-lying structures of LiCl (H 2 O) n ǫ (n = 1-4) clusters have been identified by ab initio Monte Carlo simulated annealing (MCSA), a procedure which efficiently samples a potential energy surface.
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N=3–3 transitions of Ne-like ions in the iron group, especially Ca10+ and Ti12+

TL;DR: In this paper, the 2s2p63l-3l' transition arrays are revised using beam-foil spectra and laser-produced plasmas in comparison to semi-empirically scaled computations.
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Temporal field emission current stability and fluctuations from graphene films

TL;DR: In this paper, the current stability and current fluctuations of field emitted electrons from graphene films are investigated for the periods of 24 and 100 h. The short and long-term stability and fluctuations of the graphene films were reported and the causes for degradation of the emission current were discussed.
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A combined molecular dynamics/density-functional theoretical study on the structure and electronic properties of hydrating water molecules in the minor groove of decameric DNA duplex.

TL;DR: A combined molecular dynamics/density-functional theoretical study was carried out to address the propensity of ambient water to form cross-strand bridging water (CSBW) and their effects on the electronic properties of a fully hydrated DNA duplex 5'-d(CCATTAATGG)(2)-3'.