Results 41 to 50 of about 1,147,066 (240)
Aerodynamic noise from a train pantograph
, 2014 Many studies have shown that when the speed of high speed trains exceeds around 300km/h, aerodynamic noise becomes the most significant noise source. The pantograph, or current collector, is mounted on the top of the train and is therefore not shielded ...
Liu, Xiaowan +3 more
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A Far-Field Helicopter Acoustic Detection Method Based on FRESH Adaptive Filtering
Applied SciencesHelicopter detection plays a vital role in obtaining critical aerial information promptly and ensuring the safety of lives and property. Since a helicopter’s aerodynamic noise primarily consists of main rotor noise, the cyclostationarity of this noise ...
Yingmeng Tao, Chunhua Wei, Tingting Liu
doaj +1 more source
Relationship between Separated Vortex around NACA blade and Aerodynamic Noise [PDF]
, 2009 To clarify the mechanism of the aerodynamic noise generated by the separated vortex around a NACA blade is aimed. The relation between the angle of attack and the aerodynamic noise of the blade are analyzed by the wind tunnel experiment and a commercial ...
佐々木, 壮一 +2 more
core
Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research
FEBS Letters, EarlyView.What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley +1 more source
International Journal of Aerospace Engineering, 2019 Aiming at the problem of excessive propeller noise in a new type of electric aircraft, in order to ensure the propeller aerodynamic characteristics simultaneously, a noise reduction method for improving the shape of the blade along the spanwise is ...
Yuhang Wu +5 more
doaj +1 more source
Research on Noise Reduction of Axial Flow Fan Cover Based on CFD/CAA [PDF]
E3S Web of ConferencesTaking an axial fan for an electronic equipment chassis as the research object, combining the theories of Computational Fluid Dynamics (CFD) and Computational Aerodynamic Acoustics (CAA), the steady state and non-stationary analyses are carried out by ...
Chen Kui +4 more
doaj +1 more source
Oncogenic DMTF1β promotes cancer cell motility by regulating autophagy through ULK1 stabilization
Molecular Oncology, EarlyView.In the current study, we demonstrate that the oncogene DMTF1β regulates ULK1 stability by reducing its proteasomal degradation in cancer cells. This stabilization enables ULK1 to induce autophagy, which in turn facilitates cancer cell migration. Consequently, reduced DMTF1β levels lead to decreased autophagy and impaired cancer cell migration.
Jun Xu +13 more
wiley +1 more source
, 2014 Aerodynamic noise becomes significant for high-speed trains but its prediction in an industrial context is difficult. The flow and aerodynamic noise behaviour of a simplified high-speed train bogie at scale 1:10 are studied here through numerical ...
Zhu, Jianyue +2 more
core +1 more source
Engineering Applications of Computational Fluid Mechanics, 2023 It is noteworthy to explore potential measures for further reducing the aerodynamic drag and noise of high-speed pantographs. This paper proposes a method of introducing spanwise waviness into the upper and lower arms.
Deng Qin, Tian Li, Jiye Zhang, Ning Zhou
doaj +1 more source
Molecular Oncology, EarlyView.This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi +6 more
wiley +1 more source