Mostrando 2,741 - 2,760 Resultados de 4,830 Para Buscar '"quantum mechanics"', tiempo de consulta: 0.20s Limitar resultados
  1. 2741
    “…Aggregation-induced emission (AIE) spectra accompanied by excited state intramolecular proton transfer (ESIPT) for two triphenylamine salicylaldehyde derivatives (namely, TS and TS-OMe) are investigated by performing molecular spectral and dynamics simulations associated with the hybrid quantum mechanics/molecular mechanics (QM/MM) at the quantum level of the time-dependent density functional theory. …”
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  2. 2742
    “…In this paper, we have combined molecular dynamics simulations and quantum mechanics/molecular mechanics calculations to analyze how the COX-2 catalytic mechanism is modified in the Gly526Ser mutant. …”
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  3. 2743
    “…To elucidate the mechanisms involved in the unique specificity of d-aminopeptidase, we performed quantum mechanics/molecular mechanics simulations of its polymerization reaction and determined the energy barriers presented by the chiral substrates. …”
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  4. 2744
    “…This reveals a fundamental connection between these two appealing structures and some fundamental tools in quantum mechanics and quantum computation. More precisely, we prove that the complement of a classically embedded hexagon does not provide a Mermin–Peres-like proof of the Kochen–Specker theorem whereas that of a skewly-embedded one does.…”
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  5. 2745
    “…For each molecular class, we will present the representatives and summarize the recent insights on the molecular structure and internal dynamics and how they help to advance the field of quantum mechanics.…”
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  6. 2746
    “…The expression “quantum materials” identifies materials whose properties “cannot be described in terms of semiclassical particles and low-level quantum mechanics”, i.e., where lattice, charge, spin and orbital degrees of freedom are strongly intertwined. …”
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  7. 2747
    “…First, we optimised the model based on quantum mechanics calculations and all-atom reference simulations, in combination with available experimental data. …”
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  8. 2748
    “…Our analysis includes quantum mechanics calculations and Cambridge Structure Database (CSD) queries to define the ideal conformation of these ligands, geometry analysis of PDB deposits regarding several quality factors, and a search for homologous structures to identify other small molecules that could bind in place of the parasitic ligand. …”
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  9. 2749
    “…Here, we show that a previously unexplored type of spectroscopy of the hitherto largely neglected toroidal dipolar interaction becomes feasible if, apart from the classical r × r × p toroidal dipole density term responsible for the toroidal transitions in metamaterials, the spin-dependent r × σ term (which only occurs in relativistic quantum mechanics) is taken into account. Toroidal dipole operators are odd under parity and time-reversal symmetries; toroidal dipole transitions can therefore be distinguished from electric multipole and magnetic dipole transitions.…”
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  10. 2750
    por Shapshak, Paul
    Publicado 2022
    “…This understanding is required for future advances, just as innovations in classical physics, quantum mechanics, particle physics, biophysics, chemistry, biochemistry, and molecular biology were required for the breakthroughs and advances in biology and virology, from the last century to the present - thus, the need for innovations and applications in neutrino particle physics research.…”
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  11. 2751
    “…In this study, we used proton-affinity calculations with semi-empirical quantum mechanics and microsecond long equilibrium molecular dynamics simulations to investigate mechanistic roles of structural conformation and chemical environment in dictating spontaneous degradation of Asn and Asp residues in 131 clinical-stage therapeutic antibodies. …”
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  12. 2752
    “…Unfortunately, precise quantum mechanics calculations are not feasible for large biological systems; hence, simpler calculation methods are required. …”
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  13. 2753
    por Gill, Richard D.
    Publicado 2022
    “…Conventional elementary mathematical descriptions of quantum mechanics take “measurement” to be a primitive concept. …”
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  14. 2754
    “…The Sequential Quantum Mechanics/Molecular Mechanics scheme has been enacted to perform a systematic investigation of the polarizability (α) and first hyperpolarizability (β) responses at the water–vacuum interface. …”
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  15. 2755
    “…Here, we examined, at the quantum mechanics/molecular mechanics (QM/MM) level, the effect of confinement inside CNTs on nucleophilic substitution (S(N)2) and elimination (syn-E2 and anti-E2) using as a model system the reaction between ethyl chloride and chloride. …”
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  16. 2756
    “…Here, we report a detailed comparative picture of the molecular motion at the atomic level in the presence and absence of explicit solvent. Our hybrid quantum mechanics/molecular mechanics (QM/MM) excited state simulations reveal that, although the energy landscape is slightly modulated by the solvation, the light-induced motion is dominated by a bending-assisted pedalo-type motion independent of the solvation. …”
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  17. 2757
  18. 2758
    por Dittrich, Walter
    Publicado 2001
    Tabla de Contenidos: “…Fundamental Principles of Quantum Mechanics -- 17. Functional Derivative Approach -- 18. …”
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  19. 2759
    por Jue, Thomas
    Publicado 2009
    “…Volume I: Fundamental Concepts in Biophysics Editor Thomas Jue, PhD In Fundamental Concepts in Biophysics, prominent professors have established a foundation for the study of biophysics related to the following topics: Mathematical Methods in Biophysics Quantum Mechanics Basic to Biophysical Methods Computational Modeling of Receptor–Ligand Binding and Cellular Signaling Processes Fluorescence Spectroscopy Electrophysiological Measurements of Membrane Proteins Single-Particle Tracking NMR Measurement of Biomolecule Diffusion About the Editor Thomas Jue is a Professor in the Department of Biochemistry and Molecular Medicine at the University of California Davis. …”
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  20. 2760
    por Romano, Antonio Enea
    Publicado 2012
    “…This suggests the existence of a limit about of the amount of information that cosmological observations can reveal about our Universe that no experiment could ever overcame, conceptually similar to what happens in quantum mechanics.…”
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