Results 91 to 100 of about 1,901,818 (345)

Complex Dynamics of Propagating Waves in a Two-Dimensional Neural Field

open access: yesFrontiers in Computational Neuroscience, 2019
Propagating waves with complex dynamics have been widely observed in neural population activity. To understand their formation mechanisms, we investigate a type of two-dimensional neural field model by systematically varying its recurrent excitatory and ...
Daniel Naoumenko, Pulin Gong, Pulin Gong
doaj   +1 more source

Resonant Raman Scattering by quadrupolar vibrations of Ni-Ag Core-shell Nanoparticles

open access: yes, 2002
Low-frequency Raman scattering experiments have been performed on thin films consisting of nickel-silver composite nanoparticles embedded in alumina matrix.
B. Palpant   +20 more
core   +4 more sources

Exciting experiences make neurons less excitable

open access: yeseLife, 2017
Neurons in the brain of a female mouse that respond to the scent of a given male become suppressed after mating.
Prakruti Nanda   +2 more
openaire   +3 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

The Rocketdyne Multifunction Tester. Part 1: Test Method [PDF]

open access: yes, 1991
The Rocketdyne Multifunction Tester is a general purpose test apparatus which utilizes axial and radial magnetic bearings as shaft excitation devices. The tester is modular in design so that different seal and bearing packages can be tested on the same ...
Murphy, Brian T.   +2 more
core   +1 more source

Spin Coherence During Optical Excitation of a Single NV Center in Diamond

open access: yes, 2011
We examine the quantum spin state of a single nitrogen-vacancy (NV) center in diamond at room temperature as it makes a transition from the orbital ground-state (GS) to the orbital excited-state (ES) during non-resonant optical excitation.
A. Abragam   +5 more
core   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Formation of a combined electron-hole emission state in the LiRbSO4 – Eu phosphor

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы
In the irradiated phosphor 4 LiRbSO Eu , the mechanisms of formation of the induced or combined electron-emitting state at 3.1-2.94 eV were studied using optical and thermal activation spectroscopy methods.
Т.Н. Нурахметов   +9 more
doaj   +1 more source

Cell-Type Specificity of Callosally Evoked Excitation and Feedforward Inhibition in the Prefrontal Cortex

open access: yesCell Reports, 2018
Excitation and inhibition are highly specific in the cortex, with distinct synaptic connections made onto subtypes of projection neurons. The functional consequences of this selective connectivity depend on both synaptic strength and the intrinsic ...
Paul G. Anastasiades   +2 more
doaj   +1 more source

Collective excitations in Quantum Dot

open access: yes, 1999
We investigate different types of collective excitations in a quantum dot containing finite number of electrons at zero magnetic field. To estimate the excitation energies analytically we follow the energy weighted sum-rule approach. We consider the most
B. Mast   +25 more
core   +1 more source

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