Results 51 to 60 of about 11,106 (208)
Aerospace, 2023 Pulsed plasma thrusters (PPT) have demonstrated enormous potential since the 1960s. One major shortcoming is their low thrust efficiency, typically
Dillon O’Reilly +6 more
doaj +1 more source
Semi-flexible bimetal-based thermal energy harvesters
, 2013 This paper introduces a new semi-flexible device able to turn thermal gradients into electricity by using a curved bimetal coupled to an electret-based converter.
Boisseau, S +4 more
core +1 more source
Steady‐state free precession for T2* relaxometry: All echoes in every readout with k‐space aliasing
Magnetic Resonance in Medicine, Volume 94, Issue 4, Page 1563-1576, October 2025.Abstract Purpose Multi‐echo gradient echo imaging is useful for a range of applications including relaxometry, susceptibility mapping, and quantifying relative proportions of fat and water. This relies primarily on long‐TR multi‐echo gradient echo sequences (FLASH), which by design isolate one signal component (i.e., echo) at a time per readout.
Peter J. Lally +7 more
wiley +1 more source
Quadratic‐boost‐double‐flyback converter [PDF]
IET Power Electronics, 2019 Combining low‐voltage power sources with loads that require high‐voltage levels is a challenge, especially for power devices above 500 W. In this context, this study presents a new dc–dc high‐gain converter using coupled inductors. The new converter uses only one switch and output capacitors with low values.
Marcelo Flavio Guepfrih +2 more
openaire +1 more source
Multi-cell three phase ac-dc driver for HB-LED lighting applications [PDF]
, 2017 High Brightness Light-Emitting Diodes (HB-LEDs) are becoming omnipresent across all aspects of illumination products, due to their incredible characteristics: efficiency, reliability, long lifetime, controllability, etc.
Arias Pérez de Azpeitia, Manuel +4 more
core +2 more sources
Advanced Engineering Materials, Volume 27, Issue 18, September 2025.A powerful electronic control system enables a dielectric elastomer pump to operate at resonance, matching conventional pump performance. Using self‐sensing to reconstruct load pressure dynamically, the adaptive control adjusts resonance frequency accordingly.
Matthias Baltes +3 more
wiley +1 more source
Evaluation Method of Flyback Converter Behaviors on Common-Mode Noise
IEEE Access, 2019 Common-mode (CM) conduction electromagnetic interference (EMI) is a challenge for switched-mode power supply (SMPS) designers. A flyback converter is a traditional topology used in low-power isolated applications.
Kaining Fu, Wei Chen
doaj +1 more source
Dielectric Barrier Discharge Electrothermal Heating and Additive Manufacturing of Thermoset Parts
Advanced Materials Technologies, Volume 10, Issue 18, September 18, 2025.3D printing of thermosets is difficult due to the low yield stress of most uncured resins. However, by locally heating resin using a non‐equilibrium plasma, layers can be partially cured and printing enabled. Plasma application to a liquid epoxy/carbon nanotube composite is observed to cause rapid surface heating and oxidation of the cured layers ...
Ethan M. Harkin +3 more
wiley +1 more source
Series transistors isolate amplifier from flyback voltage [PDF]
, 1967 Circuit enables high sawtooth currents to be passed through a deflection coil and isolate the coil driving amplifier from the flyback voltage. It incorporates a switch consisting of transistors in series with the driving amplifier and deflection coil ...
Banks, W.
core +1 more source
Evaluating metabolites in patients with major depressive disorder who received mindfulness-based cognitive therapy and healthy controls using short echo MRSI at 7 Tesla. [PDF]
, 2016 ObjectivesOur aim was to evaluate differences in metabolite levels between unmedicated patients with major depressive disorder (MDD) and healthy controls, to assess changes in metabolites in patients after they completed an 8-week course of mindfulness ...
Eisendrath, Stuart +6 more
core +3 more sources