Results 31 to 40 of about 93,397 (307)

Constant-amplitude, frequency- independent phase shifter [PDF]

open access: yes, 1971
Electronic circuit using operational amplifiers provides output with constant phase shift amplitude, with respect to sinusoidal input, over wide range of frequencies. New circuit includes field effect transistor, Q, operational amplifiers, A1 and A2, and
Deboo, G. J.
core   +1 more source

Four-wave mixing and generation of terahertz radiation in an alternating-strain coupled quantum-well structure [PDF]

open access: yes, 1996
We propose a scheme for exciting steady-state tunneling oscillations of an electronic wave packet in a semiconductor coupled quantum-well structure with strain of the opposite polarity in the two wells. A detailed study of the four-wave mixing process in
Paiella, Roberto, Vahala, Kerry J.
core   +1 more source

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

open access: yesFEBS 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   +13 more
wiley   +1 more source

Electronically Controllable Sinusoidal Oscillators Employing VDIBAs

open access: yesAdvances in Electrical and Electronic Engineering, 2017
Two new electronically controllable sinusoidal oscillators each employing two Voltage Differencing Inverting Buffered Amplifiers (VDIBAs), two capacitors, and a single resistor have been proposed.
Kanhaiya Lal Pushkar
doaj   +1 more source

Rotors on Active Magnetic Bearings: Modeling and Control Techniques [PDF]

open access: yes, 2012
In the last decades the deeper and more detailed understanding of rotating machinery dynamic behavior facilitated the study and the design of several devices aiming at friction reduction, vibration damping and control, rotational speed increase and ...
Bonfitto, Angelo   +3 more
core   +3 more sources

A recent electronic control circuit to a throttle device [PDF]

open access: yes, 2020
The main objective of this paper is to conceive a recent electronic control circuit to the throttle device. The throttle mechanical actuator is the most important part in an automotive gasoline engine.
Acho Zuppa, Leonardo   +2 more
core   +2 more sources

Next‐generation proteomics improves lung cancer risk prediction

open access: yesMolecular Oncology, EarlyView.
This is one of very few studies that used prediagnostic blood samples from participants of two large population‐based cohorts. We identified, evaluated, and validated an innovative protein marker model that outperformed an established risk prediction model and criteria employed by low‐dose computed tomography in lung cancer screening trials.
Megha Bhardwaj   +4 more
wiley   +1 more source

Electronic Implementation of a Deterministic Small-World Network: Synchronization and Communication

open access: yesEntropy, 2023
In this paper, synchronization and encrypted communication transmissions of analog and digital messages in a deterministic small-world network (DSWN) are presented.
Daniel Reyes-De la Cruz   +3 more
doaj   +1 more source

Brushless DC motor with dual windings [PDF]

open access: yes, 1971
Motor has high starting torque and high running speeds. Control system consists of Hall effect generator/resolver and associated electronic amplifiers and switches.
Auclair, G. F.   +2 more
core   +1 more source

ATF4‐mediated stress response as a therapeutic vulnerability in chordoma

open access: yesMolecular Oncology, EarlyView.
We screened 5 chordoma cell lines against 100+ inhibitors of epigenetic and metabolic pathways and kinases and identified halofuginone, a tRNA synthetase inhibitor. Mechanistically halofuginone induces an integrated stress response, with eIF2alpha phosphorylation, activation of ATF4 and its target genes CHOP, ASNS, INHBE leading to cell death ...
Lucia Cottone   +11 more
wiley   +1 more source

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