Results 71 to 80 of about 15,285,042 (252)

Light-controlled flows in active fluids [PDF]

Nature Physics, 2016
The ability of phototactic microorganisms to move towards optimal light intensities is exploited to generate fluid flows on scales several orders larger than the swimmers themselves. These flows are shown to function as hydrodynamic tweezers.
Dervaux, Julien, Resta, Marina, Brunet, Philippe   +2 more
openaire   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

Centrifugation-assisted lateral flow assay platform: enhancing bioassay sensitivity with active flow control

Microsystems & Nanoengineering
Lateral flow assays (LFAs) are widely used in point-of-care testing (POCT) due to their simplicity and rapid operation. However, their reliance on passive capillary flow limits sensitivity, making it challenging to detect low-abundance biomarkers ...
Hang Yuan, Ruiqi Yong, Wenwen Yuan, Quan Zhang, Eng Gee Lim, Yongjie Wang, Fuzhou Niu, Pengfei Song   +7 more
doaj   +1 more source

Wall Shear Stress Calorimetric Micro-Sensor Designed for Flow Separation Detection and Active Flow Control

Proceedings, 2017
This paper presents an efficient and high-sensitive micro-sensor designed for wall shear stress measurement. The main technical application targeted is flow separation detection for closed-loop active flow control.
Cécile Ghouila-Houri, Quentin Gallas, Eric Garnier, Alain Merlen, Romain Viard, Abdelkrim Talbi, Philippe Pernod   +6 more
doaj   +1 more source

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

FEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas, Shahoon Khan, Abhishek Sharma, Byoungchun Lee, Savraj S. Grewal   +4 more
wiley   +1 more source

Active control of flow past a cylinder

, 2022
The diploma thesis is considering active flow control. At first part describes boundary layer separation and Kármán vortices formation. It also explains why it is important to control the flow, and the control is divided into basic categories. Then there
Kukrle, Daniel
core  

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source

Geometric Control of Confined Active Flow [PDF]

, 2018
Active fluids, such as suspensions of swimming microorganisms, have been shown to spontaneously create flow. Controlling active flows could provide advantages for those designing microfluidic devices. Therefore, we looked into geometric control of active
Prakash, Piyush
core   +1 more source

An Experimental Investigation by Particle Image Velocimetry of the Active Flow Control of the Stall Inception of an Axial Compressor

International Journal of Turbomachinery, Propulsion and Power
This paper presents results from active flow control experiments carried out on a single stage axial compressor. The flow under various forced conditions has been investigated using 2D 2C particle image velocimetry (PIV) on three radial planes along the ...
Olha Alekseik, Pierric Joseph, Olivier Roussette, Antoine Dazin   +3 more
doaj   +1 more source

Numerical Study of the Effect of Corona Discharge on Upward Wake Flow in the Horizontal Axis Wind Turbine Farm [PDF]

Journal of Applied Fluid Mechanics
Many countries worldwide are showing a growing interest in renewable energy sources, with wind energy being a particularly appealing option for generating mechanical energy.
S. Abed Zahmatkesh Pasand, S. Karimian Aliabadi, S. K. Ghaemi Osgouie, M. Moshfeghi   +3 more
doaj   +1 more source