Results 11 to 20 of about 542,326 (219)

Sharp focusing of a light field with polarization and phase singularities of an arbitrary order [PDF]

open access: yesКомпьютерная оптика, 2019
Using the Richards-Wolf formalism, we obtain general expressions for all components of the electric and magnetic strength vectors near the sharp focus of an optical vortex with the topological charge m and nth-order azimuthal polarization.
Victor Kotlyar   +2 more
doaj   +1 more source

Knockout of the circadian gene, Per2, disrupts corticosterone secretion and results in depressive‐like behaviors and deficits in startle responses

open access: yesBMC Neuroscience, 2021
Background The Period Circadian Regulator 2 (Per2) gene is important for the modulation of circadian rhythms that influence biological processes. Circadian control of the hypothalamus-pituitary-adrenal (HPA) axis is critical for regulation of hormones ...
Ashley L. Russell   +5 more
doaj   +1 more source

Assessing Chronodisruption Distress in Goldfish: The Importance of Multimodal Approaches

open access: yesAnimals, 2023
Chronodisruption caused by factors such as light at night and mistimed meals has been linked to numerous physiological alterations in vertebrates and may be an anxiogenic factor affecting welfare.
Nuria Saiz   +6 more
doaj   +1 more source

The GH-IGF-1 Axis in Circadian Rhythm

open access: yesFrontiers in Molecular Neuroscience, 2021
Organisms have developed common behavioral and physiological adaptations to the influence of the day/night cycle. The CLOCK system forms an internal circadian rhythm in the suprachiasmatic nucleus (SCN) during light/dark input.
Weihao Wang   +5 more
doaj   +1 more source

Pregnancy-Associated Plasma Protein (PAPP)-A2 in Physiology and Disease

open access: yesCells, 2021
The growth hormone (GH)/insulin-like growth factor (IGF) axis plays fundamental roles during development, maturation, and aging. Members of this axis, composed of various ligands, receptors, and binding proteins, are regulated in a tissue- and time ...
Vicente Barrios   +9 more
doaj   +1 more source

A kind of rotational surfaces with a light-like axis in conformally flat pseudo-spaces of dimensional three

open access: yesCommunications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2023
In this work, we define the rotational surface with a light-like axis in conformally flat pseudo-spaces $\left(\mathbb{E}_3^1\right)_\lambda$, where $\lambda$ is a radial-type conformal factor. We relate the principal curvatures of a non-degenerate surface that belongs to conformally equivalent spaces $\left(\mathbb{E}_3^1\right)_\lambda$ and $\mathbb{
openaire   +2 more sources

Intermediate Mass Fragments production at low energy: reaction mechanism and isospin influence [PDF]

open access: yesEPJ Web of Conferences, 2019
In this work, we present a recent study concerning the break-up of the Projectile-Like (PLF) into two fragments, following more violent deep-inelastic collisions in the reactions 78Kr + 40Ca and 86Kr + 48Ca at 10 A MeV, realized at INFN-Laboratori ...
Pirrone Sara   +14 more
doaj   +1 more source

Chiral photoelectron angular distributions from ionization of achiral atomic and molecular species

open access: yesPhysical Review Research, 2020
We show that the combination of two achiral components—an atomic or molecular target plus a circularly polarized photon—can yield chirally structured photoelectron angular distributions.
Andreas Pier   +14 more
doaj   +1 more source

p62 is Negatively Implicated in the TRAF6-BECN1 Signaling Axis for Autophagy Activation and Cancer Progression by Toll-Like Receptor 4 (TLR4)

open access: yesCells, 2020
Toll-like receptors (TLRs) induce the activation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and autophagy through the TNF (Tumor necrosis factor) receptor-associated factor 6 (TRAF6)-evolutionarily conserved signaling ...
Mi-Jeong Kim   +5 more
doaj   +1 more source

Photonic-Assisted Ultrawideband Pulse Generator With Tunable Notch Filtering Based on Polarization-to-Intensity Conversion

open access: yesIEEE Photonics Journal, 2013
A photonic approach to generating ultrawideband (UWB) pulses with tunable band-rejection behavior and a chirp-free property, which is based on a nonlinear operated polarization-to-intensity converter, is proposed and demonstrated.
Jianyu Zheng   +5 more
doaj   +1 more source

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