Results 51 to 60 of about 5,099,079 (342)

Effects of Raman scattering and attenuation in silica fiber-based parametric frequency conversion

open access: yes, 2017
Four-wave mixing in the form of Bragg scattering (BS) has been predicted to enable quantum noise less frequency conversion by analytic quantum approaches.
Friis, Søren M. M.   +2 more
core   +1 more source

Noise figures (linear transducers) [PDF]

open access: yesIEEE Transactions on Education, 1989
A short tutorial description of noise figures for two-port linear transducers and entire receiver systems is presented. Due to the long history and of the use of noise figures to specify noise performance, numerous definitions have evolved. The relationship between the various noise-figure definitions found in the literature are specified and tables ...
openaire   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Automatic Speech Recognition Performance Improvement for Mandarin Based on Optimizing Gain Control Strategy

open access: yesSensors, 2022
Automatic speech recognition (ASR) is an essential technique of human–computer interactions; gain control is a commonly used operation in ASR. However, inappropriate gain control strategies can lead to an increase in the word error rate (WER) of ASR.
Desheng Wang   +4 more
doaj   +1 more source

Shot noise of series quantum point contacts intercalating chaotic cavities [PDF]

open access: yes, 2002
Shot noise of series quantum point contacts forming a sequence of cavities in a two dimensional electron gas are studied theoretically and experimentally.
A. Kumar   +18 more
core   +3 more sources

Noise-like pulse trapping in a figure-eight fiber laser.

open access: yesOptics Express, 2015
We report on the trapping of noise-like pulse in a figure-eight fiber laser mode locked by nonlinear amplifier loop mirror (NALM). After achievement of noise-like vector pulse, it was found that the wavelength shift of the two resolved polarization ...
A. Luo   +7 more
semanticscholar   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

The noise properties of stochastic processes and entropy production [PDF]

open access: yes, 2001
Based on a Fokker-Planck description of external Ornstein-Uhlenbeck noise and cross-correlated noise processes driving a dynamical system we examine the interplay of the properties of noise processes and the dissipative characteristic of the dynamical ...
A. Compte   +18 more
core   +2 more sources

AAA+ protein unfoldases—the Moirai of the proteome

open access: yesFEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Noise Parameter Analysis of SiGe HBTs for Different Sizes in the Breakdown Region

open access: yesActive and Passive Electronic Components, 2016
Noise parameters of silicon germanium (SiGe) heterojunction bipolar transistors (HBTs) for different sizes are investigated in the breakdown region for the first time.
Chie-In Lee, Yan-Ting Lin, Wei-Cheng Lin
doaj   +1 more source

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