Results 91 to 100 of about 2,361 (309)
Control of Dual-Opposed Stirling Convertors with Active Power Factor Correction Controllers [PDF]
, 2006 When using recently-developed active power factor correction (APFC) controllers in power systems comprised of dual-opposed free-piston Stirling convertors, a variety of configurations of the convertors and controller(s) can be considered, with ...
Lewandowski, Edward J. +2 more
core +1 more source
β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations
Advanced Biology, Volume 9, Issue 3, March 2025.Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio +11 more
wiley +1 more source
Evaluation of DC-link voltage ripple in five-phase PWM voltage source inverters
The Journal of Engineering, 2019 This paper presents the analysis of the DC-link voltage switching ripple in five-phase PWM voltage source inverters with balanced load. The analysis is particularly important for the design and selection of a DC-link capacitor making it possible to meet ...
M. Vujacic +4 more
doaj +1 more source
Testing of the Advanced Stirling Radioisotope Generator Engineering Unit at NASA Glenn Research Center [PDF]
The Advanced Stirling Radioisotope Generator (ASRG) is a high-efficiency generator being developed for potential use on a Discovery 12 space mission. Lockheed Martin designed and fabricated the ASRG Engineering Unit (EU) under contract to the Department ...
Lewandowski, Edward J.
core +1 more source
Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source
The Journal of Engineering, 2019 The non-inverting buck boost (NIBB) converter has attracted significant attention in recent years, as it shares ground between input and output, and the voltage stress of switches is lower.
Xing Weng +6 more
doaj +1 more source
High-CMRR stray-insensitive switched-capacitor differential input stage for A/D convertors
Electronics Letters, 1986 A new stray-insensitive switched-capacitor differential input circuit for A/D convertors is presented. This circuit, which uses only switches and capacitors, completely rejects common-mode signals regardless of the values of the design capacitors and the stray capacitances.
K. Nagaraj, K. Singhal
openaire +1 more source
Advanced Engineering Materials, EarlyView.This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff +9 more
wiley +1 more source
The Journal of Engineering, 2019 Inductorless half-bridge, piezoelectric transformer (PT) resonant power supplies require careful control if zero-voltage switching (ZVS) of the MOSFETs is to be achieved.
Martin P. Foster +3 more
doaj +1 more source
A method to measure EMI due to electric field coupling on PCB [PDF]
, 1997 A new method to measure electric field coupling between PCB copper traces is presented. This method enables measurement of noise from waveforms obtainable from breadboard prototypes, which is available in an early stage in the design process.
Lee, ACM, Pong, BMH
core +1 more source