Results 61 to 70 of about 62,185 (340)

Amplifier for measuring low-level signals in the presence of high common mode voltage [PDF]

, 1985
A high common mode rejection differential amplifier wherein two serially arranged Darlington amplifier stages are employed and any common mode voltage is divided between them by a resistance network.
Lukens, F. E.
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

A simple circuit realization of the tent map

, 2009
We present a very simple electronic implementation of the tent map, one of the best-known discrete dynamical systems. This is achieved by using integrated circuits and passive elements only. The experimental behavior of the tent map electronic circuit is
Billings, Blakely, E. Campos-Cantón, Elaydi, H.C. Rosu, Hasler, Huang, I. Campos-Cantón, J.S. Murguía, Li, May, Murali, Suneel, Tanaka   +13 more
core   +1 more source

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

FEBS 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, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Research and improvement of operational amplifier stability in capacitive sensor driver circuits

Технологія та конструювання в електронній апаратурі, 2008
It has been shown that the instability of operational amplifiers in capacitive driver circuits is caused by a significant phase shift in the negative feedback loop, which leads to oscillation processes.
Z. Yu. Hotra, R. L. Holyaka, I. I. Gelzynskii   +2 more
doaj  

Operationalamplifier analysis when migrating from 0.18 µm to 65 µm cmos technology / Operacinių stiprintuvų parametrų tyrimas 0,18 μm ir 65 nm KMOP technologijose

Mokslas: Lietuvos Ateitis, 2013
The article offers the analysis of operational amplifier parameter changes, when circuits are scaled from 0.18 μm to 65 nm CMOS technology. Two two-stage operational amplifiers were designed for this purpose: first uses n-MOS input differential pair ...
Karolis Kiela, Marijan Jurgo
doaj   +1 more source

Reduction of operational amplifiers finite gain effects in switched-capacitor biquads [PDF]

Serbian Journal of Electrical Engineering, 2005
A combined approach for reducing the errors in the pole frequency f p, the pole Q - factor Qp and the magnitude at the pole frequency Hp, of switched capacitor biquads is presented.
Radev Nikolay, Ivanov Kantcho
doaj   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source