Results 31 to 40 of about 1,579,149 (313)

Multistep Transformations of DNA Origami Domino Array via Mechanical Forces

open access: yesSmall Structures, 2023
Nanostructures that display controllable motions and functions are indispensable to build molecular nanomachines. Structural DNA nanotechnology, enabling precise design of complex static and dynamic structures, can be used to construct molecular ...
Yan Liu   +8 more
doaj   +1 more source

P-matrix and J-matrix approaches. Coulomb asymptotics in the harmonic oscillator representation of scattering theory

open access: yes, 1999
The relation between the R- and P-matrix approaches and the harmonic oscillator representation of the quantum scattering theory (J-matrix method) is discussed. We construct a discrete analogue of the P-matrix that is shown to be equivalent to the usual P-
A.I. Mazur   +52 more
core   +1 more source

The Nonsymmetric Flavor Transition Matrix and the Apparent P Violation

open access: yesAdvances in High Energy Physics, 2022
The leptonic mixing parameters of high precision and the next-generation neutrino telescopes make it possible to test new physics in the flavor transition of the high-energy astrophysical neutrinos (HAN).
Shu-Jun Rong, Ding-Hui Xu
doaj   +1 more source

Error bounds for the linear complementarity problem with a P-matrix

open access: yesLinear Algebra and its Applications, 1990
AbstractWe introduce a fundamental quantity associated with a P-matrix and show how this quantity is useful in deriving error bounds for the linear complementarity problem of the P-type. We also obtain (upper and lower) bounds for the quantity introduced.
Jong-Shi Pang, Roy Mathias
openaire   +2 more sources

Interfacial Aspects of Metal Matrix Composites Prepared from Liquid Metals and Aqueous Solutions: A Review

open access: yesMetals, 2020
The paper reviews the preparation of the different metallic nanocomposites. In the preparation of composites, especially in the case of nanocomposites, interfacial phenomena play an important role.
Peter Baumli
doaj   +1 more source

The P-matrix and a matching radius model for pion-hadron scattering [PDF]

open access: yesPhysics Letters B, 1986
Abstract A matching radius model of pion-hadron scattering is developed by assuming the continuity of the axial current. This model is applied to the simplified situation of a pion scattering off a static empty bag to study the relationship between P -matrix poles and the bag model primitives.
M.J. Iqbal, Byron K. Jennings
openaire   +2 more sources

Exact solutions to the modified Korteweg-de Vries equation

open access: yes, 2010
A formula for certain exact solutions to the modified Korteweg-de Vries (mKdV) equation is obtained via the inverse scattering transform method. The kernel of the relevant Marchenko integral equation is written with the help of matrix exponentials as ...
Demontis, Francesco
core   +1 more source

On the Burer-Monteiro method for general semidefinite programs

open access: yes, 2020
Consider a semidefinite program (SDP) involving an $n\times n$ positive semidefinite matrix $X$. The Burer-Monteiro method uses the substitution $X=Y Y^T$ to obtain a nonconvex optimization problem in terms of an $n\times p$ matrix $Y$.
Cifuentes, Diego
core   +1 more source

Neurturin Gene Therapy Protects Parasympathetic Function to Prevent Irradiation-Induced Murine Salivary Gland Hypofunction

open access: yesMolecular Therapy: Methods & Clinical Development, 2018
Head and neck cancer patients treated with irradiation often present irreversible salivary gland hypofunction for which no conventional treatment exists.
Joao N.A. Ferreira   +7 more
doaj   +1 more source

The (weakly) sign symmetric P-matrix completion problems

open access: yesThe Electronic Journal of Linear Algebra, 2003
The completion problem is studied for some sub-classes of the class of \(P\)-matrices. A {completion} of a partial matrix (i.e. a matrix with some unspecified entries) is a specific choice of values for the unspecified entries. A {pattern} for \(n\times n\) matrices is a subset of \(\mathcal{N}\times\mathcal{N}\) where \(\mathcal{N}=\{1,\dots,n\}\).
DeAlba, Luz   +3 more
openaire   +5 more sources

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