Results 101 to 110 of about 30,307 (306)

Aeroacoustics of a coaxial rotor in level flight [PDF]

open access: yes, 2008
The aeroacoustic characteristics of a coaxial system with teetering rotors in level forward °ight are com- pared to those of an equivalent articulated single rotor with the same solidity.
Brown, R.E.   +5 more
core  

GLS1 Orchestrates Exosome‐Mediated Tumor‐Endothelial Communication to Facilitate Angiogenesis

open access: yesAdvanced Science, EarlyView.
This study reveals a previously unappreciated, non‐metabolic function of GLS1 in the control of tumor angiogenesis via exosome‐mediated CAV1‐TNC signaling, indicating that therapeutic targeting of GLS1 may offer a dual benefit by simultaneously suppressing tumor metabolic activity and angiogenic processes in head and neck cancer. ABSTRACT Glutaminase 1
Jianqiang Yang   +9 more
wiley   +1 more source

Helicopter rotors

open access: yes, 2012
The Bachelor thesis Helicopter rotors has several purposes. Delineate historical development of the helicopters as a vehicle and combat vehicle. Describe main parts and their roles in helicopter. Put into aerodynamics of the rotors.
Brožek, Petr
core   +1 more source

Novel Winding Design and Analysis of Brushless Wound Rotor Synchronous Machines

open access: yesIET Electric Power Applications
Synchronous machines are electric machines characterised by a rotating speed proportional to the AC supply and are independent of load. Traditional permanent magnet synchronous machines utilise rare earth minerals for rotor flux generation, posing ...
Ahsan Fayyaz   +3 more
doaj   +1 more source

Control strategy of doubly-fed induction generator during the grid voltage swell

open access: yesThe Journal of Engineering, 2018
This study firstly derives the relationship between the grid voltage and the rotor current of doubly-fed induction generator (DFIG) during the grid voltage swell.
Zou Le   +5 more
doaj   +1 more source

centrifugeR: Non-Trivial Balance of Centrifuge Rotors

open access: yes, 2020
Loading tubes in opposite buckets has been used universally, yet intuitively to balance centrifuge rotors. Most rotors support tube distributions with rotational symmetry of order not only 2 but also other prime divisors of the total bucket number.
Duy Nghia Pham
core   +1 more source

Electrochemically Induced Interphase by Complex Hydride Anions in Argyrodite Solid Electrolytes for Stable Lithium Metal All‐Solid‐State Batteries

open access: yesAdvanced Science, EarlyView.
Complex hydride anion substitution in argyrodite electrolytes has attracted attention for improving interfacial stability, yet the influence of these anions at Li metal interfaces remains unclear. This work shows that electrochemically formed BH4−‐derived interphases enable stable high‐current full‐cell cycling.
Sangho Lee   +13 more
wiley   +1 more source

Hybrid algorithm for rotor angle security assessment in power systems

open access: yesThe Journal of Engineering, 2015
Transient rotor angle stability assessment and oscillatory rotor angle stability assessment subsequent to a contingency are integral components of dynamic security assessment (DSA) in power systems.
D. Prasad Wadduwage   +2 more
doaj   +1 more source

Numerical modelling of pressure rise combustion for reducing emissions of future civil aircraft [PDF]

open access: yes, 2014
This work assesses the feasibility of designing and implementing the wave rotor (WR), the pulse detonation engine (PDE) and the internal combustion wave rotor (ICWR) as part of novel Brayton cycles able to reduce emissions of future aircraft.
Materano Blanco, Gilberto Ignacio
core  

Dynamics and interactions of active rotors

open access: yes, 2010
We consider a simple model of an internally driven self-rotating object; a rotor, confined to two dimensions by a thin film of low-Reynolds-number fluid.
M. Leoni   +3 more
core   +1 more source

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