Results 81 to 90 of about 14,448,705 (337)

Gamma-ray Polarimetry [PDF]

open access: yes, 2002
An astrophysics application of a low noise Double-sided Silicon Strip Detector (DSSD) is described. A Semiconductor Multiple-Compton Telescope (SMCT) is being developed to explore the gamma-ray universe in the 0.1-20 MeV energy band.
Tajima, Hiroyasu
core   +3 more sources

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

open access: yesFEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies   +3 more
wiley   +1 more source

A low power low noise eight-phase output ring oscillator

open access: yesDianzi Jishu Yingyong, 2018
Aiming at the problems of the ring oscillator such as large power consumption, loud noise, linearity deficiency etc., a novel ring oscillator with cross feed forward structure is proposed based on TSMC 55 nm process.
Li Xin, Zhang Haining, Liu Min
doaj   +1 more source

A low‐noise current‐reused CMOS active inductor by exploiting Gm‐boosting technique

open access: yesIET Microwaves, Antennas & Propagation, 2021
This work introduces a new low‐noise current‐reused CMOS active inductor (AI) based on Gyrator‐C configuration. In the proposed AI, a simple common‐source amplifier is utilised for boosting effective Gm and improving noise performance of the AI.
Abdollah Sabbaghi, Emad Ebrahimi
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Advancements in Neural Recording Circuits: Review of Nerve Biopotentials, and Neural Recording Circuit Architectures

open access: yesIEEE Access
Peripheral nerve injuries pose significant health challenges leading to loss of motor control and sensation. These injuries can result from trauma, surgery, tumors, and neurological disorders.
Malak Mneimneh   +2 more
doaj   +1 more source

Low Noise Low Power CMOS Telescopic-OTA for Bio-Medical Applications

open access: yesComputers, 2016
The preamplifier block is crucial in bio-medical signal processing. The power intensive Operational Transconductance Amplifier (OTA) is considered, and the performance of preamplifier is studied.
Bellamkonda Saidulu   +2 more
doaj   +1 more source

FET input voltage amplifier for low frequency noise measurements

open access: yesMetrology and Measurement Systems, 2020
The paper presents a low noise voltage FET amplifier for low frequency noise measurements. It was built using two stages of an op amp transimpedance amplifier.
Krzysztof Achtenberg   +2 more
doaj   +1 more source

Differential regulation of ZFAS1 splice variants by endoplasmic reticulum stress in hepatocyte cell lines

open access: yesFEBS Open Bio, EarlyView.
ZFAS1 is a lncRNA promoting cell proliferation and migration, exhibiting high expression in various cancers. It is conserved, widely expressed, and produces multiple splice variants with unclear roles. We identified several splice variants in hepatocyte models, and found that inhibiting or suppressing regulators of the unfolded protein response (PERK ...
Sébastien Soubeyrand   +2 more
wiley   +1 more source

Bandgap-Tuned Yttrium-Doped Indium Oxide Alloy Thin Films for High-Performance Solar-Blind Ultraviolet Photodetectors

open access: yesTechnologies
Yttrium oxide (Y2O3) has emerged as a key material for advanced solar-blind ultraviolet (SBUV) photodetectors, attributable to its large bandgap energy (~5.5 eV), high dielectric constant, excellent silicon compatibility, and robust thermal stability. To
Lu Gan   +4 more
doaj   +1 more source

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