Results 51 to 60 of about 651,065 (329)

Relationship between the Molecular Geometry and the Radiative Efficiency in Naphthyl-Based Bis-Ortho-Carboranyl Luminophores

open access: yesMolecules, 2022
The efficiency of intramolecular charge transfer (ICT)-based emission on π-aromatic-group-appended closo-ortho-carboranyl luminophores is known to be affected by structural fluctuations and molecular geometry, but investigation of this relationship has ...
Sanghee Yi   +5 more
doaj   +1 more source

Disentangling orthogonal matrices

open access: yesLinear Algebra and its Applications, 2017
Motivated by a certain molecular reconstruction methodology in cryo-electron microscopy, we consider the problem of solving a linear system with two unknown orthogonal matrices, which is a generalization of the well-known orthogonal Procrustes problem. We propose an algorithm based on a semi-definite programming (SDP) relaxation, and give a theoretical
Zhang, Teng, Singer, Amit
openaire   +4 more sources

The Stochastic Evolution of Financial Asset Prices

open access: yesMathematics
This paper examines the relationship between dependence and independence alternatives in general stochastic processes and explores the duality between the true (yet unknown) stochastic process and the functional representation that fits the observed data.
Ioannis Paraskevopoulos, Alvaro Santos
doaj   +1 more source

Remarks on the mean-square values of the geomagnetic field and its components

open access: yesAnnals of Geophysics, 1995
When considering functions on the Earth's (spherical) surface, mean-square values are often used to indicate their (relative) magnitude. If a function is separated into it, (essentially) spherical harmonic components then, provided these individual ...
F. J. Lowes, C. Falcone, A. De Santis
doaj   +1 more source

Reversed HILIC Gradient: A Powerful Strategy for On-Line Comprehensive 2D-LC

open access: yesMolecules, 2023
The aim of the present work is to evaluate the possibilities and limitations of reversed hydrophilic interaction chromatography (revHILIC) mode in liquid chromatography (LC). This chromatographic mode consists of combining a highly polar stationary phase
Soraya Chapel   +3 more
doaj   +1 more source

Orthogonal Matchings

open access: yesDiscrete Mathematics, 2002
Let \(G\) be a graph decomposed into \(m\) 2-factors. An orthogonal matching in \(G\) is a matching which contains exactly one edge from each 2-factor. It is proved that \(G\) has an orthogonal matching if the order of \(G\) is at least \(3m- 2\).
openaire   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Exploring the Local Orthogonality Principle [PDF]

open access: yes, 2014
Nonlocality is arguably one of the most fundamental and counterintuitive aspects of quantum theory. Nonlocal correlations could, however, be even more nonlocal than quantum theory allows, while still complying with basic physical principles such as no ...
Acín, A.   +6 more
core   +3 more sources

FASES ESTACIONÁRIAS DE LÍQUIDOS IÔNICOS EM CROMATOGRAFIA GASOSA: FUNDAMENTOS, AVANÇOS RECENTES E PERSPECTIVAS

open access: yesQuímica Nova, 2016
Since their original discovery in 1914, ionic liquids (IL) have been widely examined and explored in chemistry due to their unique physical and chemical properties.
Leandro W. Hantao   +2 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

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