Results 51 to 60 of about 10,400,724 (310)

Antioxidant Properties of Kynurenines: Density Functional Theory Calculations. [PDF]

open access: yesPLoS Computational Biology, 2016
Kynurenines, the main products of tryptophan catabolism, possess both prooxidant and anioxidant effects. Having multiple neuroactive properties, kynurenines are implicated in the development of neurological and cognitive disorders, such as Alzheimer's ...
Aleksandr V Zhuravlev   +3 more
doaj   +1 more source

Orbital-free density functional theory simulation of collective dynamics coupling in liquid Sn [PDF]

open access: yes, 2018
Producción CientíficaThe appearance of a second excitation mode in the longitudinal and transverse collective dynamics of a series of liquid metals has been observed recently, either by inelastic X-ray scattering (IXS) or by first-principles molecular ...
Beatriz G. del Rio   +7 more
core   +1 more source

Computational complexity of time-dependent density functional theory

open access: yesNew Journal of Physics, 2014
Time-dependent density functional theory (TDDFT) is rapidly emerging as a premier method for solving dynamical many-body problems in physics and chemistry. The mathematical foundations of TDDFT are established through the formal existence of a fictitious
J D Whitfield   +4 more
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Density-Functional Theory of Polar Insulators [PDF]

open access: yesPhysical Review Letters, 1997
We examine the density-functional theory of macroscopic insulators, obtained in the large-cluster limit or under periodic boundary conditions. For polar crystals, we find that the two procedures are not equivalent. In a large-cluster case, the exact exchange-correlation potential acquires a homogeneous ``electric field'' which is absent from the usual ...
Godby, R.W., Gonze, X., Ghosez, P.
openaire   +3 more sources

Time-dependent density functional theory for periodic systems [PDF]

open access: yes, 2001
In this thesis the time-dependent version of density functional theory is described, which has been developed for crystalline non-metallic systems with periodicity in one to three dimensions.
Kootstra, Freddie,, Kootstra, Freddie
core   +17 more sources

Density-Driven Correlations in Ensemble Density Functional Theory: Insights from Simple Excitations in Atoms

open access: yes, 2020
Ensemble density functional theory extends the usual Kohn-Sham machinery to quantum state ensembles involving ground- and excited states. Recent work by the authors [Phys. Rev. Lett. 119, 243001 (2017); 123, 016401 (2019)] has shown that both the Hartree-
Gould, T, Pittalis, S
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Pair Densities in Density Functional Theory [PDF]

open access: yesMultiscale Modeling & Simulation, 2015
30 ...
Huajie Chen, Gero Friesecke
openaire   +4 more sources

Interfacial Microstructure of Neutral and Charged Polymer Brushes: A Density Functional Theory Study [PDF]

open access: yes, 2022
Polymer density functional theory (PDFT) is a computationally efficient and popular statistical mechanics theory of complex fluids for capturing the interfacial microstructure of grafted polymer brushes (PBs).
Jian, Jiang, Leying, Qing
core   +2 more sources

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