Results 51 to 60 of about 1,501,574 (297)

Application of Low-Frequency Processing Method Based on VMD Algorithm in Blasting Signal Processing

open access: yesShock and Vibration, 2022
In the field of blasting vibration signal analysis, accurate removal of low-frequency noise in the signal has important practical significance. In view of the shortcomings of the existing methods, such as cumbersome calculation and limited scope of ...
Bei Jia   +3 more
doaj   +1 more source

Measuring low-frequency noise indoors [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2008
At low frequencies, the sound pressure level may vary 20-30 dB in a room due to standing waves. For assessment of annoyance, mainly areas with the highest occurring levels are relevant, since persons present in such areas are not helped by the existence of lower levels in other areas.
Pedersen, Steffen   +2 more
openaire   +4 more sources

Decoherence in qubits due to low-frequency noise

open access: yes, 2009
The efficiency of the future devices for quantum information processing is limited mostly by the finite decoherence rates of the qubits. Recently a substantial progress was achieved in enhancing the time, which a solid-state qubit demonstrates a coherent
Abel B Marquardt F   +11 more
core   +1 more source

Noise and Equivalent Circuit of Double Injection [PDF]

open access: yes, 1968
Measurements of the high‐frequency noise of a silicon double‐injection diode result in 〈i^2〉 = α⋅4kT(1/r)Δf with α=1.04 and in agreement with the literature. A new interpretation demands Nyquist noise with α≡1 in these devices at high frequencies.
Bilger, H. R.   +3 more
core   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

Gain Dependence of the Noise in the Single Electron Transistor

open access: yes, 1998
An extensive investigation of low frequency noise in single electron transistors as a function of gain is presented. Comparing the output noise with gain for a large number of bias points, it is found that the noise is dominated by external charge noise.
A. N. Korotkov   +5 more
core   +1 more source

Matched wideband low-noise amplifiers for radio astronomy [PDF]

open access: yes, 2009
Two packaged low noise amplifiers for the 0.3–4 GHz frequency range are described. The amplifiers can be operated at temperatures of 300–4 K and achieve noise temperatures in the 5 K range (
Bardin, J.   +3 more
core   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

open access: yesMolecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson   +9 more
wiley   +1 more source

Dephasing of qubits by transverse low-frequency noise

open access: yes, 2003
We analyze the dissipative dynamics of a two-level quantum system subject to low-frequency, e.g. 1/f noise, motivated by recent experiments with superconducting quantum circuits.
A. Cottet   +8 more
core   +1 more source

Noise reduction and hyperfine level coherence in spontaneous noise spectroscopy of atomic vapor [PDF]

open access: yes, 2013
We develop a system for measurements of power spectra of transmitted light intensity fluctuations, in which the extraneous noise, including shot noise, is reduced. In essence, we just apply light, measure the power of the transmitted light and derive its
Aoki, Kenichiro, Mitsui, Takahisa
core   +1 more source

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