Results 71 to 80 of about 18,687 (256)

Magnetorotational Instability in Liquid Metal Couette Flow

open access: yes, 2002
Despite the importance of the magnetorotational instability (MRI) as a fundamental mechanism for angular momentum transport in magnetized accretion disks, it has yet to be demonstrated in the laboratory.
H. F. Beckley   +7 more
core   +1 more source

A V‐Shaped In‐Pipe Robot to Travel Through Complex Winding Pathways in Three Dimensions

open access: yesJournal of Field Robotics, Volume 42, Issue 5, Page 1808-1825, August 2025.
ABSTRACT This paper presents a V‐shaped gas pipeline inspection robot which achieves high roll rotation performance, out‐of‐plane double elbow travel performance, and inverted siphon adaptability at high speed without requiring complicated manual operation. The principle for traveling through the out‐of‐plane double elbow was theoretically demonstrated
Atsushi Kakogawa   +3 more
wiley   +1 more source

A rotating cavity for high-field angle-dependent microwave spectroscopy of low-dimensional conductors and magnets

open access: yes, 2005
The cavity perturbation technique is an extremely powerful method for measuring the electrodynamic response of a material in the millimeter- and sub-millimeter spectral range (10 GHz to 1 THz), particularly in the case of high-field/frequency magnetic ...
Bonn D. A.   +13 more
core   +1 more source

Variable angle photoelectron spectrometer [PDF]

open access: yes, 1977
The design, construction, and performance of a spectrometer for measuring the angular and energy distributions of electrons photoejected by rare gas resonance light is described. Results using 584.4‐Å photons from a helium lamp are reported.
Kuppermann, Aron   +2 more
core   +1 more source

Emerging Trends of MXene Nanocomposites in Textile Substrates for Enhanced EMI Shielding: A Systematic Review

open access: yesAdvanced Materials Interfaces, Volume 12, Issue 14, July 25, 2025.
This comprehensive review explores the integration of MXene nanomaterials with textiles for electromagnetic interference shielding applications. The study systematically examines fabrication methodologies, performance metrics, and hybrid composite formulations.
Nazish Saleem Abbas   +4 more
wiley   +1 more source

Index to nasa tech briefs, issue number 2 [PDF]

open access: yes, 1965
Annotated bibliography on technological innovations in NASA space ...

core   +1 more source

Piezoelectric rotator for studying quantum effects in semiconductor nanostructures at high magnetic fields and low temperatures

open access: yes, 2010
We report the design and development of a piezoelectric sample rotation system, and its integration into an Oxford Instruments Kelvinox 100 dilution refrigerator, for orientation-dependent studies of quantum transport in semiconductor nanodevices at ...
A. P. Micolich   +6 more
core   +1 more source

Multimodal Locomotion: Next Generation Aerial–Terrestrial Mobile Robotics

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 7, July 2025.
Aerial–terrestrial robots can achieve efficient energy consumption and robust environmental interaction by adding morphological features, adapting forms for locomotion transitions, and integrating multiple platforms. This next generation of mobile robots advances real‐world robotic deployment for operations with complex tasks and tackle environments ...
Jane Pauline Ramirez, Salua Hamaza
wiley   +1 more source

Design and Characteristic Analysis of Reflux Type Mechanical Hydraulic Hybrid Transmission for Wind Turbines

open access: yesWind Energy, Volume 28, Issue 7, July 2025.
ABSTRACT With the development of wind turbines to deep sea, its working environment is more and more severe, which puts higher stability requirements of the transmission chain. A variety of front‐end speed regulation methods have been proposed because this method can improve the reliability of wind turbines by eliminating electrical components with ...
Fuquan Dai   +5 more
wiley   +1 more source

Performance of Magnetic-Superconductor Non-Contact Harmonic Drive for Cryogenic Space Applications [PDF]

open access: yes, 2015
Harmonic drives are profusely used in aerospace mainly because of their compactness and large reduction ratio. However, their use in cryogenic environments is still a challenge. Lubrication and fatigue are non-trivial issues under these conditions.
Abreu, Jorge   +17 more
core   +3 more sources

Home - About - Disclaimer - Privacy