Results 71 to 80 of about 361 (216)

Birefringence-Induced Trains of High-Rate Pulses in a Mode-Locked Fiber Laser

open access: yesIEEE Photonics Journal, 2009
The output of a mode-locked erbium-doped ring fiber laser incorporating a section of a polarization-maintaining (PM) fiber is investigated in both numerical simulations and experiments.
Avi Zadok, Jacob Sendowski, Amnon Yariv
doaj   +1 more source

A Frequency Band Phase Calibration Method Based on Differential Group Delay

open access: yesDEStech Transactions on Computer Science and Engineering, 2017
Due to the disadvantages of single calibration way and low efficiency of the dualchannel monopoles radar phase calibration method and single frequency calibration for one time, we propose a method of phase calibration based on the information plus channel group delay, by which we can deduce the phase of the whole frequency just through one single phase
JIE LIU, JINYAO CAI
openaire   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Morroniside repairs atrazine-induced skin damage by ameliorating lipid metabolism disorders and inhibiting ferroptosis

open access: yesEcotoxicology and Environmental Safety
Morroniside (MOR) has shown great potential in treating atrazine (ATZ)-induced skin damage. This study aims to elucidate MOR's mechanism of action in mitigating lipid metabolism disorders and inhibiting ferroptosis to repair ATZ-induced skin damage ...
Weibin Du   +8 more
doaj   +1 more source

Z2×Z3 Equivariant Bifurcation in Coupled Two Neural Network Rings

open access: yesDiscrete Dynamics in Nature and Society, 2014
We study a Hopfield-type network that consists of a pair of one-way rings each with three neurons and two-way coupling between the rings. The rings have symmetric group Γ=Z3×Z2, which means the global symmetry Z2 and internal symmetry Z3.
Baodong Zheng, Haidong Yin
doaj   +1 more source

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar   +4 more
wiley   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

open access: yesFEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta   +3 more
wiley   +1 more source

Existence of Fractional Impulsive Functional Integro-Differential Equations in Banach Spaces

open access: yesApplied System Innovation, 2019
In this paper, we establish the existence of piece wise (PC)-mild solutions (defined in Section 2) for non local fractional impulsive functional integro-differential equations with finite delay.
Dimplekumar Chalishajar   +3 more
doaj   +1 more source

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