Results 81 to 90 of about 13,073 (314)

Chaotic rotation of a towed elliptical cylinder [PDF]

open access: yes, 2014
In this paper I consider the self-excited rotation of an elliptical cylinder towed in a viscous fluid as a canonical model of nonlinear fluid–structure interactions with possible applications in the design of sensors and energy extraction devices. First,
Weymouth, G.D.
core   +1 more source

SMAD4 Palmitoylation Drives a Metabolic‐Transcriptional Circuit to Promote Tumorigenesis and Confers Radiosensitivity in Pancreatic Cancer

open access: yesAdvanced Science, EarlyView.
This study identifies palmitoylation as a novel regulatory modification of SMAD4, mediated by ZDHHC22/APT2. It activates fatty acid synthesis, creating a self‐reinforcing SMAD4–FASN–palmitate feedback loop that drives pancreatic cancer growth and enhances radiotherapy sensitivity.
Yang Wang   +16 more
wiley   +1 more source

Effect of Inclination on Vortex Shedding Frequency Behind a Bent Cylinder: An Experimental Study

open access: yesFluids, 2019
This paper presents experimental results on the vortex shedding frequency measured behind a bent cylinder. Experiments were conducted in a wind tunnel covering Reynolds numbers between 50 and 500, a range of interest for flow sensing, flow control, and ...
Jorge Silva-Leon, Andrea Cioncolini
doaj   +1 more source

Fast numerical evaluation of flow fields with vortex cells [PDF]

open access: yes, 2009
A vortex cell (in this paper) is an aerodynamically shaped cavity in the surface of a body, for example a wing, designed specially to trap the separated vortex within it, thus preventing large-scale unsteady vortex shedding from the wing.
Chernyshenko, S.   +3 more
core   +1 more source

Redox‐Dependent Chaperoning of GBF1 Condensates Regulates Seed Germination in Arabidopsis

open access: yesAdvanced Science, EarlyView.
In dormant seeds (low ROS), GBF1 forms liquid condensates to repress the germination gene CathB3, and the chaperone GIP1 maintains condensate liquidity and repressive activity. Upon imbibition (high ROS), ROS oxidize GIP1 during germination, impairing its chaperone function.
Yunying Wang, Xiaofeng Fang
wiley   +1 more source

An Experimental Study of the Effect of Vortex Shedding on Solar Collector Performance

open access: yesAl-Khawarizmi Engineering Journal, 2015
In this work, the effect of vortex shedding on the solar collector performance of the parabolic trough solar collector (PTSC) was estimated experimentally.
Alaulddin Abdulqader Kadim
doaj  

Thermoacoustic Instabilities in the Rijke Tube: Experiments and Modeling [PDF]

open access: yes, 2003
Thermoacoustic instability can appear in thermal devices when unsteady heat release is coupled with pressure perturbations. This effect results in excitation of eigen acoustic modes of the system.
Konstantin Matveev   +1 more
core   +1 more source

β‐Elemene Rescues Radiation‐Induced Enteritis by Orchestrating a Host‐Microbiome Circuit That Fuels Epigenetic DNA Repair

open access: yesAdvanced Science, EarlyView.
This study elucidates that β‐elemene promotes cellular uptake of L. gasseri‐derived lactate by enhancing the membrane translocation of MCT1 in a CD147‐dependent manner. Intracellular lactate, through the lactylation of RBBP4 at the K26 site, recruits EP300 to the promoter regions of downstream genes (POLD1/POLD3), catalyzing H3K27ac modification.
Jiancheng He   +10 more
wiley   +1 more source

An Experimental Study of the Effect of Vortex Shedding on Solar Collector Performance

open access: yesAl-Khawarizmi Engineering Journal, 2014
In this work, the effect of vortex shedding on the solar collector performance of the parabolic trough solar collector (PTSC) was estimated experimentally.
Alaulddin Abdulqader Kadim
doaj  

Hot-Wire Calibration at Low Velocities: Revisiting the Vortex Shedding Method

open access: yesAdvances in Mechanical Engineering, 2013
The necessity to calibrate hot-wire probes against a known velocity causes problems at low velocities, due to the inherent inaccuracy of pressure transducers at low differential pressures.
Sohrab S. Sattarzadeh   +2 more
doaj   +1 more source

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