Results 121 to 130 of about 12,874,811 (378)

Ions in solution: Density Corrected Density Functional Theory (DC-DFT)

open access: yes, 2014
Standard density functional approximations often give questionable results for odd-electron radical complexes, with the error typically attributed to self-interaction.
Eunji Sim   +5 more
core   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Remarks on Some Nonparametric Estimates of a Density Function

open access: yes, 1956
1. Summary. This note discusses some aspects of the estimation of the density function of a univariate probability distribution. All estimates of the density function satisfying relatively mild conditions are shown to be biased.
M. Rosenblatt
semanticscholar   +1 more source

Diffeomorphic density registration

open access: yes, 2018
In this book chapter we study the Riemannian Geometry of the density registration problem: Given two densities (not necessarily probability densities) defined on a smooth finite dimensional manifold find a diffeomorphism which transforms one to the other.
Ashburner   +41 more
core   +1 more source

Entropy and Density [PDF]

open access: yesProceedings of the American Mathematical Society, 1971
We prove that for any r r , “ entropy = r \operatorname {entropy} = r ” is a dense condition in the uniform topology.
openaire   +2 more sources

Modifications in FLAP's second cytosolic loop influence 5‐LOX interaction, inhibitor binding, and leukotriene formation

open access: yesFEBS Letters, EarlyView.
The enzyme 5‐lipoxygenase (5‐LOX) catalyzes the first step in the biosynthesis of leukotrienes (LTs) involved in inflammatory pathophysiology. After cellular stimulation, 5‐LOX translocates to the nucleus, interacting with the 5‐LOX‐activating protein (FLAP) to form LTA4 from arachidonic acid (AA).
Erik Romp   +5 more
wiley   +1 more source

Minimum Density Hyperplanes [PDF]

open access: yes, 2016
Associating distinct groups of objects (clusters) with contiguous regions of high probability density (high-density clusters), is central to many statistical and machine learning approaches to the classification of unlabelled data.
Hofmeyr, David P.   +2 more
core   +2 more sources

Invariance of density correlations with charge density in polyelectrolyte solutions

open access: yes, 2003
We present a theory for the equilibrium structure of polyelectrolyte solutions. The main element is a simple, new optimization scheme that allows theories such as the random phase approximation (RPA) to handle the harsh repulsive forces present in such ...
Donley, James P.   +2 more
core   +1 more source

Brucella NyxA and NyxB dimerization enhances effector function during infection

open access: yesFEBS Letters, EarlyView.
Brucella abortus thrives inside cells thanks to the translocation of effector proteins that fine‐tune cellular functions. NyxA and NyxB are two effectors that destabilize the nucleolar localization of their host target, SENP3. We show that the Nyx proteins directly interact with each other and that their dimerization is essential for their function ...
Lison Cancade‐Veyre   +4 more
wiley   +1 more source

Terahertz Cherenkov radiation induced by a self-modulated electron beam in plasma wakefield

open access: yesAIP Advances, 2019
In this paper, a novel scheme of generating terahertz radiation is proposed, which considers a relativistic electron beam being modulated by its self-excited plasma wakefield in a plasma-filled slow-wave structure (SWS).
Shengpeng Yang   +4 more
doaj   +1 more source

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