Results 41 to 50 of about 188,454 (278)

Second harmonic generation from nanocrystals under linearly and circularly polarized excitations [PDF]

open access: yes, 2010
We study second harmonic generation (SHG) from non-centrosymmetric nanocrystals under linearly polarized (LP) and circularly polarized (CP) excitations.
Grange, Rachel   +3 more
core   +2 more sources

Research of three harmonic excitation synchronous motor speed control system

open access: yesAIP Advances
This paper presents a speed control system based on the third harmonic excitation synchronous motor. Compared with harmonic excitation by adding harmonic windings in the electric excitation motor, the structure is simpler, with lower hardware costs and ...
Xiaoou Fan   +3 more
doaj   +1 more source

Renormalized Harmonic-Oscillator Description of Confined Electron Systems with Inverse-Square Interaction

open access: yes, 1993
An integrable model for SU($\nu$) electrons with inverse-square interaction is studied for the system with confining harmonic potential. We develop a new description of the spectrum based on the {\it renormalized harmonic-oscillators} which incorporate ...
Belavin A. A.   +17 more
core   +2 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

Comparative Analysis of Shaft Voltage Harmonic Characteristics in Large-Scale Generators: OEM and Excitation System Comparisons

open access: yesEnergies
This study presents a comparative harmonic analysis of shaft voltage waveforms in large-scale steam turbine generators, emphasizing the influence of excitation system topology and generator design on spectral behavior.
Katudi Oupa Mailula, Akshay Kumar Saha
doaj   +1 more source

Surface plasmon mediated harmonically resonant effects on third harmonic generation from Au and CuS nanoparticle films

open access: yesNanophotonics, 2023
A growing class of nonlinear materials employ the localized surface plasmonic resonance (LSPR) of nanoparticles to enhance harmonic generation. Material systems containing harmonically coupled metallic and semiconductor plasmonic nanoparticles have been ...
Spear Nathan J.   +5 more
doaj   +1 more source

NIR-to-NIR Imaging: Extended Excitation Up to 2.2 μm Using Harmonic Nanoparticles with a Tunable hIGh EneRgy (TIGER) Widefield Microscope

open access: yesNanomaterials, 2021
Near-infrared (NIR) marker-based imaging is of growing importance for deep tissue imaging and is based on a considerable reduction of optical losses at large wavelengths.
Laura Vittadello   +5 more
doaj   +1 more source

State Dependent Effective Interaction for the Hyperspherical Formalism [PDF]

open access: yes, 1999
The method of effective interaction, traditionally used in the framework of an harmonic oscillator basis, is applied to the hyperspherical formalism of few-body nuclei (A=3-6).
A. Kievsky   +43 more
core   +2 more sources

Adaptaquin is selectively toxic to glioma stem cells through disruption of iron and cholesterol metabolism

open access: yesMolecular Oncology, EarlyView.
Adaptaquin selectively kills glioma stem cells while sparing differentiated brain cells. Transcriptomic and proteomic analyses show Adaptaquin disrupts iron and cholesterol homeostasis, with iron chelation amplifying cytotoxicity via cholesterol depletion, mitochondrial dysfunction, and elevated reactive oxygen species.
Adrien M. Vaquié   +16 more
wiley   +1 more source

An energy flow study of a double-deck tunnel under quasi-static and harmonic excitations [PDF]

open access: yes, 2016
© 2016. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/This paper presents a comparison between the vibration energy flow radiated by a double-deck tunnel and the one radiated by a simple
Arcos Villamarín, Robert   +2 more
core   +2 more sources

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