Results 41 to 50 of about 506,862 (302)

Wave friction factor rediscovered

open access: yesGeo-Marine Letters, 2011
The wave friction factor is commonly expressed as a function of the horizontal water particle semi-excursion (A wb) at the top of the boundary layer. A wb, in turn, is normally derived from linear wave theory by $$ \frac{{{U_{\text{wb}}}{T_{\text{w}
openaire   +3 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Study on Friction Loss of Carcass in Un-bonded Flexible Riser

open access: yesShiyou jixie, 2018
With the continuous development of offshore oil and gas resources, the application of un-bonded flexible risers has become more widespread. When the vessel hoisting flexible riser on the surface of the water experience irregular movement, the flexible ...
Li Wenbo   +3 more
doaj  

An analytical approach for predicting the fillet and contact stresses in symmetric and asymmetric spur gears under frictional mesh assumptions

open access: yesResults in Engineering
A precise estimation of the bending and contact stresses, as well as the true friction value during the gear mesh, are critical aspects of a cost-effective and safe gear design.
Ahmed A. Toman, Mohammad Q. Abdullah
doaj   +1 more source

The friction factor of two-dimensional rough-boundary turbulent soap film flows

open access: yes, 2009
We use momentum transfer arguments to predict the friction factor $f$ in two-dimensional turbulent soap-film flows with rough boundaries (an analogue of three-dimensional pipe flow) as a function of Reynolds number Re and roughness $r$, considering ...
A. J. Chorin   +12 more
core   +1 more source

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

open access: yesFEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth   +6 more
wiley   +1 more source

RESEARCH OF ADAPTIVE FRICTION CLUTCH WITH DIFFERENTIATED FRICTION PAIRS

open access: yesВестник Донского государственного технического университета, 2018
The problem of the clutch operation accuracy increase without introducing material changes into its construction is solved on the ground of N.D. Verner's construction of the adaptive lamellar clutch which friction group consists of disks made from the ...
Alexander E. Fokin   +2 more
doaj  

A Review of Pressure Drop and Mixing Characteristics in Passive Mixers Involving Miscible Liquids

open access: yesMicromachines
The present review focuses on the recent studies carried out in passive micromixers for understanding the hydrodynamics and transport phenomena of miscible liquid–liquid (LL) systems in terms of pressure drop and mixing indices.
Arijit Ganguli   +4 more
doaj   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

open access: yesFEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young   +7 more
wiley   +1 more source

RESEARCH OF ADAPTIVE FRICTION CLUTCH WITH DIFFERENTIATED FRICTION PAIRS

open access: yesAdvanced Engineering Research, 2011
The problem of the clutch operation accuracy increase without introducing material changes into its construction is solved on the ground of N.D. Verner's construction of the adaptive lamellar clutch which friction group consists of disks made from the ...
Alexander E. Fokin   +2 more
doaj  

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