Results 51 to 60 of about 890,396 (390)

Universal Integrated Photodetector Platform

open access: yesProceedings, 2018
Within this work we developed a universal integrated photodetector platform for the detection, amplification and digitalization of various optical data signals.
Alexander Nemecek   +2 more
doaj   +1 more source

Amplifying the Optophone [PDF]

open access: yesNature, 1921
MR. CAMPBELL SWINTON'S forecast in NATURE of March 3, p. 8, has been fully verified since he wrote. On Tuesday, March 1, the Marconi Co. kindly lent me one of their three-valve amplifiers working with an S. G. Brown loud-speaking telephone and wooden trumpet. Mr. F.
openaire   +3 more sources

Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley   +1 more source

Bismuth-Doped Fiber Lasers and Amplifiers Operating from O- to U-Band: Current State of the Art and Outlook

open access: yesPhotonics
The development of unique optical materials that provide amplification and lasing in new wavelength ranges is a major scientific problem, the solution of which is becoming the basis for the emergence of new optical technologies, which are primarily ...
Sergey Alyshev   +3 more
doaj   +1 more source

Quantum metrology with parametric amplifier-based photon correlation interferometers

open access: yesNature Communications, 2014
Conventional interferometers usually utilize beam splitters for wave splitting and recombination. These interferometers are widely used for precision measurement.
F. Hudelist   +5 more
semanticscholar   +1 more source

The remarkable cochlear amplifier [PDF]

open access: yesHearing Research, 2010
This composite article is intended to give the experts in the field of cochlear mechanics an opportunity to voice their personal opinion on the one mechanism they believe dominates cochlear amplification in mammals. A collection of these ideas are presented here for the auditory community and others interested in the cochlear amplifier. Each expert has
J, Ashmore   +16 more
openaire   +3 more sources

Design of hysteresis circuits using differential amplifiers [PDF]

open access: yes, 1971
Design equations for hysteresis circuit are based on the following assumptions: amplifier input impedance is larger than source impedance; amplifier output impedance is less than load impedance; and amplifier switches state when differential input ...
Cooke, W. A.
core   +1 more source

Making tau amyloid models in vitro: a crucial and underestimated challenge

open access: yesFEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

A grid amplifier [PDF]

open access: yesIEEE Microwave and Guided Wave Letters, 1991
A 50-MESFET grid amplifier is reported that has a gain of 11 dB at 3.3 GHz. The grid isolates the input from the output by using vertical polarization for the input beam and horizontal polarization for the transmitted output beam. The grid unit cell is a two-MESFET differential amplifier.
Kim, Moonil   +6 more
openaire   +4 more sources

Fluid pressure amplifier and system [PDF]

open access: yes, 1973
A flueric beam-deflection amplifier and a method of controlling the same are described. Either a single or a series of cascaded fluid amplifier units are provided and each one of which may include the usual power nozzle, control nozzles, outlet passages ...
Garner, H. D., Hellbaum, R. F.
core   +1 more source

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