Results 31 to 40 of about 14,740 (209)

Recoverable rocket vehicle Patent [PDF]

open access: yes, 1965
Techniques for recovery of multistage rocket vehicles by providing lifting surfaces on individual ...
Wuenscher, H. F.
core   +1 more source

Trabalho de conclusão do projeto flyback / Flyback project completion work [PDF]

open access: yesBrazilian Journal of Development, 2021
Adolfo III. Echeandia La Torre   +2 more
openaire   +1 more source

High‐Isolation LCoS‐Based Optical Switch with Phase Hologram Parameter Optimization

open access: yesAdvanced Photonics Research, Volume 6, Issue 9, September 2025.
A 1 × 9 liquid crystal on silicon (LCoS)‐based optical switch is experimentally demonstrated, revealing that the worst‐case port isolation exceeds 37 dB within the wavelength range of 1460–1540 nm. This work offers an alternative route for the development of optical switches with a large number of ports and high isolation, applicable to large‐capacity ...
Linbojie Huang   +8 more
wiley   +1 more source

Quantitative Electron Beam‐Single Atom Interactions Enabled by Sub‐20‐pm Precision Targeting

open access: yesAdvanced Science, Volume 12, Issue 34, September 11, 2025.
Atomic lock‐on (ALO) is a rapid, low‐dose in situ technique in scanning transmission electron microscopy (STEM) that achieves sub‐20 picometer (pm) beam positioning. A sparse annular scan collects positional information while avoiding irradiation of the target site.
Kevin M. Roccapriore   +2 more
wiley   +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]

open access: yes, 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

Short‐term gradient imperfections in high‐resolution EPI lead to Fuzzy Ripple artifacts

open access: yesMagnetic Resonance in Medicine, Volume 94, Issue 2, Page 571-587, August 2025.
Abstract Purpose High‐resolution fMRI is a rapidly growing research field focused on capturing functional signal changes across cortical layers. However, the data acquisition is limited by low spatial frequency EPI artifacts; termed here as Fuzzy Ripples.
Laurentius (Renzo) Huber   +16 more
wiley   +1 more source

Multi-cell three phase ac-dc driver for HB-LED lighting applications [PDF]

open access: yes, 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

A Review of Vertical Ga2O3 Diodes: From Fabrication to Performance Optimization and Future Outlooks

open access: yesphysica status solidi (b), Volume 262, Issue 8, August 2025.
Gallium oxide (Ga2O3) diodes are emerging as promising components in power electronics, offering an ultrawide bandgap, high breakdown electric field, and cost‐effective growth methods. This article reviews recent advancements in Ga2O3 diodes, highlighting their fabrication techniques, performance in high‐voltage applications, and ongoing research ...
Jose Manuel Taboada Vasquez, Xiaohang Li
wiley   +1 more source

Single‐Layer Spin‐Orbit‐Torque Magnetization Switching Due to Spin Berry Curvature Generated by Minute Spontaneous Atomic Displacement in a Weyl Oxide

open access: yesAdvanced Materials, Volume 37, Issue 26, July 3, 2025.
Single‐layer magnetization switching with a small critical current density of ≈106 A cm−2 is demonstrated. The strong intrinsic spin Hall effect, causing the switching, is induced by the synergy of the inherent spin‐orbit coupling and the spontaneous oxygen octahedral rotation in SrRuO3.The findings highlight the immense potential for realizing ...
Hiroto Horiuchi   +11 more
wiley   +1 more source

A 2-D nonlinear FEA tool embedded in Matlab/Simulink surrounding for application of electromagnetic field analysis in power converters [PDF]

open access: yes, 2007
This paper presents a 2-D nonlinear finite element analysis (FEA) tool embedded in Matlab/Simulink surrounding for the application of electromagnetic field analysis in power converters.
Chen, J, Guo, Y, Zhu, J
core   +1 more source

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