Results 51 to 60 of about 398,053 (318)

Second-Harmonic Generation in Optical Fibers Under an External Electric Field

open access: yesApplied Sciences
A method for the second-harmonic generation (SHG) in optical fibers by exploiting the third-order nonlinearity under an external electric field is proposed. The analysis begins with the electric polarization vector of the SHG, and the analytical solution
Lanlan Liu   +4 more
doaj   +1 more source

Nonlinearity effects in the kicked oscillator [PDF]

open access: yesPhysical Review E, 2002
The quantum kicked oscillator is known to display a remarkable richness of dynamical behaviour, from ballistic spreading to dynamical localization. Here we investigate the effects of a Gross Pitaevskii nonlinearity on quantum motion, and provide evidence that the qualitative features depend strongly on the parameters of the system.
ARTUSO, ROBERTO, REBUZZINI L.
openaire   +4 more sources

Establishing an assay to evaluate d‐amino acid oxidase enzyme kinetics and inhibition using WST‐8 redox dye

open access: yesFEBS Open Bio, EarlyView.
This study investigated a novel WST‐8‐based assay for evaluating d‐Amino acid oxidase (DAO) inhibitors. We confirmed its effectiveness using known inhibitors and found that uremic toxins possess relatively weak inhibitory activity compared to existing drugs.
Kahoko Miyake   +4 more
wiley   +1 more source

Cosmological effects of nonlinear electrodynamics [PDF]

open access: yesClassical and Quantum Gravity, 2007
It will be shown that a given realization of nonlinear electrodynamics, used as source of Einstein's equations, generates a cosmological model with interesting features, namely a phase of current cosmic acceleration, and the absence of an initial singularity, thus pointing to a way to solve two important problems in cosmology.
Novello, M.   +3 more
openaire   +2 more sources

Pharmacological inhibition of the PERK pathway modulates hepatocellular carcinoma growth and immune signaling

open access: yesFEBS Open Bio, EarlyView.
Pharmacological inhibition of PERK in a DEN‐induced mouse model of liver cancer does not reduce tumor burden but alters cellular stress signaling. Despite blocking PERK activity, downstream stress responses, including CHOP expression, remain active, suggesting compensatory mechanisms within the unfolded protein response that may influence tumor ...
Ada Lerma‐Clavero   +5 more
wiley   +1 more source

Electrical Detection in Two‐Terminal Perpendicularly Magnetized Devices via Geometric Anomalous Nernst Effect

open access: yesAdvanced Electronic Materials
The non‐uniform current distribution arising from either the current crowding effect or the hot spot effect provides a method to tailor the interaction between thermal gradient and electron transport in magnetically ordered systems.
Jiuming Liu   +12 more
doaj   +1 more source

Modeling Nonlinear Effects in Risk Ratio and Risk Difference Using Poisson and Gaussian Additive Regression Models

open access: yesStats
The logistic additive regression model has been a standard method in modeling nonlinear effects for multivariate analyses of binary outcomes in the generalized additive model (GAM) framework.
Hisashi Noma, Takahiro Kitano
doaj   +1 more source

Analysis and Reduction of Nonlinear Effects in Optical Fiber Frequency Transfer

open access: yesApplied Sciences, 2023
Nonlinear effects in optical fiber frequency transfer have a significant impact on the precision of frequency transfer. We investigate the main nonlinear effects, including the Brillouin scattering and the Raman scattering, in optical fiber frequency ...
Jing Gao   +10 more
doaj   +1 more source

Influence of Soret and Dufour effects on unsteady 3D MHD slip flow of Carreau nanofluid over a slendering stretchable sheet with chemical reaction

open access: yes, 2019
This paper presents a numerical exploration on the unsteady three-dimensional hydromagnetic flow of Carreau nanofluid over a slendering stretchable sheet in the presence of thermal radiation and chemical reaction.
Chamkha, J.   +2 more
core   +1 more source

Is the Nonlinear Meissner Effect Unobservable? [PDF]

open access: yesPhysical Review Letters, 1998
We examine the effects of nonlocal electrodynamics for a d-wave superconductor on the field dependence of the magnetic penetration depth. The linear field dependence predicted in the local limit, commonly known as the nonlinear Meissner effect, is instead found to be quadratic, $δλ\sim H^2$ for fields below a crossover scale $H^*$.
Li, Mei-Rong   +2 more
openaire   +2 more sources

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