Results 51 to 60 of about 10,209,746 (308)
Low-frequency noise control using layered granular aerogel and limp porous media
, 2021 Click on the DOI link to access the conference paper (may not be free).The acoustic absorption of granular aerogel layers with a granule sizes in the range of 2 to 40 μm is dominated by narrow-banded, high absorption regions in the low-frequency range ...
Xue, Yutong +7 more
core +1 more source
FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
Design Technique for Transimpedance Amplifier using gm/Id Methodology
Guangtongxin yanjiu, 2021 Aiming at the high complexity of the mathematical model of short channel transistor, a gm/Id method is proposed to describe the short channel transistor model.
Jia-hui LIN, Xiang JIANG
doaj +1 more source
Appraisal of a low noise electrocardiogram
Journal of the American College of Cardiology, 1983 Two low noise electrocardiographic systems were designed to record low amplitude His-Purkinje potentials in the PR segment and delayed depolarization potentials in the ST-T segment from the body surface on a beat to beat basis. In one system, a bipolar electrode was utilized and the noise level was optimally reduced to 2 to 2.5 microV by a combination ...
El-Sherif, Nabil +3 more
openaire +2 more sources
Noise-optimized ultrastable low-noise current amplifier [PDF]
Review of Scientific Instruments, 2019 We have developed a noise-optimized ultrastable low-noise current amplifier (ULCA) aimed at reducing the uncertainty at low currents. It involves a thin-film resistor network with 6.75 GΩ at the high-ohmic path which reduces the noise level to 1.6 fA/Hz. Noise investigations as well as short-term and long-term stability studies were carried out.
C. Krause +3 more
openaire +2 more sources
A multi-filter system for speech enhancement under low signal-to-noise ratios
, 2009 In this paper, the problem of deteriorating performance of speech recognition under very low signal-to-noise ratios (SNR) is considered. In particular, for a given pre-trained speech recognizer and for a finite set of speech commands, we show that ...
Nordholm, Sven +13 more
core +1 more source
RTS noise impact in CMOS image sensors readout circuit [PDF]
, 2009 CMOS image sensors are nowadays widely used in imaging applications even for high end applications. This is really possible thanks to a reduction of noise obtained, among others, by Correlated Double Sampling (CDS) readout.
P. Magnan +3 more
core +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
A 10 V Transfer Standard Based on Low-Noise Solid-State Zener Voltage Reference ADR1000
MetrologyVoltage standards are widely used to transfer volts from Josephson voltage standards (JVSs) at national metrology institutes (NMIs) into calibration labs to maintain the volts and to transfer them to test equipment at production lines.
André Bülau +2 more
doaj +1 more source
A low noise CMOS camera system for 2D resonant inelastic soft X-ray scattering
Frontiers in Physics, 2023 Resonant Inelastic X-ray Scattering (RIXS) is a powerful spectroscopic technique to study quantum properties of materials in the bulk. A novel variant of RIXS, called 2D RIXS, enables concurrent measurement of the scattered X-ray spectrum for a wide ...
Nord Andresen +8 more
doaj +1 more source