Results 131 to 140 of about 30,307 (306)

A CUSUM test with sliding reference for ground resonance monitoring [PDF]

open access: yes, 2011
Ground resonance is potentially destructive oscillations that may develop on helicopters rotors when the aircraft is on or near the ground. Therefore, this unstable phenomenon has to be detected before it occurs in order to be avoided by the pilot.
Jhinaoui, Ahmed   +2 more
core  

Drag Force Acting on Ultra-Highspeed Rotors [PDF]

open access: yes
Among a number of problems concerning rotors revolving in the ultra-highspeed range over 100,000 R. P. M., results obtained in experiments on the drag force of rotating bodies are described.
Yoshizawa, Toru
core   +1 more source

Donor–Acceptor Covalent Organic Framework Enables Ambipolar Charge Storage in Aluminum‐Ion Energy Storage

open access: yesAdvanced Energy Materials, EarlyView.
A donor–acceptor covalent organic framework is designed as an ambipolar cathode for aluminum‐ion energy storage. The crystalline, microporous architecture enables intrinsic charge transport without conductive additives. Multi‐electron redox activity at donor and acceptor sites supports high capacity, excellent stability, and efficient reversible ...
Cataldo Valentini   +11 more
wiley   +1 more source

Analysis of Condition Changes of Rotor Compressors Contact Surfaces

open access: yes
The rotors of screw type compressors are the most important details, which make influence on running efficiency. Scientists of engineering solve problems, which relates to the changes of mechanical properties of screw type compressors rotors surface and ...
Muižnieks, Gatis   +2 more
core  

Análise do comportamento dinâmico de rotores em eixos bobinados [PDF]

open access: yes, 2001
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.Este trabalho tem por objetivo analisar, utilizando o método dos elementos finitos, o comportamento dinâmico de rotores em eixos bobinados. Os rotores são formados por um
Silveira, Márcio Eduardo
core  

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai   +3 more
wiley   +1 more source

Perilipin‐2‐Anchored Lipid Droplet‐Targeting Phototheranostics

open access: yesAngewandte Chemie, EarlyView.
This study reports two NIR theranostic dyes, C‐BDP‐OH and C‐BDP‐OMe. C‐BDP‐OMe targets lipid droplets via a dual‐anchoring mechanism with PLIN2, enabling wash‐free tumor imaging. With 62.6% photothermal conversion efficiency, it achieves tumor ablation by downregulating PLIN2, disrupting LD‐mitochondria crosstalk, and triggering apoptosis and ...
Lipeng Zhang   +9 more
wiley   +2 more sources

Analysis of Providing Rotor Surface Resistance to Wear

open access: yes
By increasing of query, what extend industrial production volumes, many of companies more frequently use excelsior technologically fashionable, economic and the safe equipment.
Muižnieks, Gatis   +3 more
core  

Controlling collective rotational patterns of magnetic rotors

open access: yes, 2019
Magnetic actuation is widely used in engineering specific forms of controlled motion in microfluidic applications. A challenge, however, is how to extract different desired responses from different components in the system using the same external ...
Golestanian, R. ; https://orcid.org/   +7 more
core   +1 more source

Patient‐Mounted Neuro Optical Coherence Tomography for Targeted Minimally Invasive Micro‐Resolution Volumetric Imaging in Brain In Vivo

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Herein, a patient‐mounted neuro optical coherence tomography system that integrates a 5 degrees‐of‐freedom skull‐mounted robot (Skullbot) with a 0.6 mm neuroendoscope for targeted, minimally invasive deep brain imaging, is developed. The system offers high‐resolution imaging with precise deployment, demonstrated through successful tumor imaging in a ...
Chao Xu   +7 more
wiley   +1 more source

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