Results 61 to 70 of about 3,330,118 (346)
FEBS Letters, EarlyView.In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley +1 more source
Aerospace, 2022 With the growth of the satellite industry, the demand for a propulsion system for small launch vehicles and spacecraft has increased. Small liquid rocket engines may require Ultra-Low specific speed centrifugal pumps due to the low required thrust and ...
Hye In Kim +3 more
doaj +1 more source
Cell migration directionality and speed are independently regulated by RasG and Gβ in Dictyostelium cells in electrotaxis. [PDF]
, 2019 Motile cells manifest increased migration speed and directionality in gradients of stimuli, including chemoattractants, electrical potential and substratum stiffness.
Devreotes, Peter N +6 more
core
A stepwise emergence of evolution in the RNA world
FEBS Letters, EarlyView.How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley +1 more source
Design Method for Low Specific Speed Axial Flow Pump for High-Speed Undersea Vehicles
水下无人系统学报For the axial flow pumps water-jet propulsion system of undersea vehicles, the high specific speed axial flow pump designed by the lift method fails to work under shallow water and high-speed conditions at present.
Ziruo ZHANG, Kai LUO, Kan QIN
doaj +1 more source
Effect of splitter blades on turbine mode of low specific speed pump [PDF]
EPJ Web of ConferencesThe use of pump in turbine mode is an evolving research field. This article is mainly focused on the influence of splitter blades on the turbine mode of pump exclusively. CFD analysis on low specific speed pump geometry was performed.
Bezdíček Jiří +2 more
doaj +1 more source
Performance Optimization of Slotted Blades for Low-Specific Speed Centrifugal Pumps
Advances in Civil Engineering, 2023 Centrifugal pumps are widely used for the transport of fluids, but low-specific-speed centrifugal pumps widely have problems with serious backflow and low efficiency.
Qidi Ke, Lingfeng Tang
doaj +1 more source
The explicit secular equation for surface acoustic waves in monoclinic elastic crystals [PDF]
, 2012 The secular equation for surface acoustic waves propagating on a monoclinic elastic half-space is derived in a direct manner, using the method of first integrals.
Destrade, Michel
core +2 more sources
FEBS Letters, EarlyView.B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro +2 more
wiley +1 more source
Mode and Speed Specificity of Eccentric and Concentric Exercise Training [PDF]
Journal of Orthopaedic & Sports Physical Therapy, 1989 This research was supported by a Duke University Research Council Grant. The purpose of this study was to examine mode and speed specificity of strength training by comparing concentric and eccentric isokinetic exercise of the quadriceps. Forty-eight healthy men (mean age = 23.9 years) were randomly assigned to one of three groups: concentric training (
Julie Chandler +4 more
openaire +3 more sources