Results 151 to 160 of about 40,364 (312)

Numerical study of the unsteady aerodynamics of helicopter rotor aerofoils

open access: yes, 1999
A two-dimensional model of the aerodynamics of rotor blades in forward flight is proposed in which the motion of the blade is represented by periodical variations of the freestrearn velocity and incidence. A novel implicit methodology for the solution
Shaw, Scott, Shaw, S.T.
core  

Spotlight on the Nucleotide: Solid‐State NMR for the Investigation of ATP Hydrolysis in the ATPase SmsC

open access: yesChemistry – A European Journal, EarlyView.
Nucleotide‐detected solid‐state NMR has been applied to probe nucleotide conformations and dynamics during ATP hydrolysis using the dimeric P‐loop ATPase SmsC as a model protein. The different stages of ATP hydrolysis have been mimicked by ATP analogues for which different degrees of conformational heterogeneity have been observed. ABSTRACT Solid‐state
Nina Wehr   +7 more
wiley   +1 more source

The effect of blade aerodynamic modelling on the prediction of the blade airloads and the acoustic signature of the HART II rotor

open access: yes, 2009
As a rotorcraft descends or manoeuvres, the interactions which occur between the rotor blades and vortical structures within the rotor wake produce highly impulsive loads on the blades and with these a highly intrusive external noise.
Kelly, Mary E., Brown, R.E., Kelly, M.E.
core  

Reverse Engineering and Performance Evaluation of a Pump Impeller Fabricated With Additive Manufacturing

open access: yesChemie Ingenieur Technik, EarlyView.
This study explores the process chain for reverse engineering and additive manufacturing of a water pump impeller in a process plant. Key aspects include digital twin creation, CAD redesign, material certification, Hirtisation postprocessing, and performance testing. Insights highlight iterative design for improved precision and reliability.
Michael Stadler   +3 more
wiley   +1 more source

Detection of early changes in rotor dynamics of rotating machinery based on wavelet analysis

open access: yes, 2012
This paper explores the application of wavelet analysis for the detection of early changes in rotor dynamics caused by common machinery faults namely, rotor unbalance and minor blade rubbing conditions.
Ngui, W. K., Leong, M. S., Lim, Meng Hee
core  

Purification, Fluorescent Labeling, and Detyrosination of Mammalian Cell Tubulin for Biochemical Assays

open access: yesCytoskeleton, EarlyView.
ABSTRACT Microtubules play essential roles in numerous cellular processes. All microtubules are built from the protein tubulin, yet individual microtubules can differ spatially and temporally due to their tubulin isotype composition and post‐translational modifications (PTMs).
Ezekiel C. Thomas   +5 more
wiley   +1 more source

DLR’s S4 Rotor Code Validation With HART II Data: The Baseline Case

open access: yes, 2007
S4 is the name of DLR’s high resolution rotor code for simulation of aerodynamics, dynamics, acoustics and flow field of isolated rotors like those being operated in the wind tunnel.
van der Wall, Berend G., Yin, Jianping
core  

Expression, Purification, and Microscopy‐Based Assays for Engineered Recombinant Tyrosinated, Detyrosinated, and Δ2 Human Tubulin

open access: yesCytoskeleton, EarlyView.
ABSTRACT Microtubules are noncovalent polymers assembled from α/β tubulin dimers. Their structure, dynamics and interaction with effectors are regulated through the expression of diverse tubulin isotypes and chemically diverse posttranslational modifications, also known as the “tubulin code.” Understanding the biophysical correlates between tubulin ...
Jiayi Chen   +2 more
wiley   +1 more source

Long-Range and Coupled Rotor Dynamics in NO2-MIL-53(Al) by Classical Molecular Dynamics. [PDF]

open access: yesJ Phys Chem C Nanomater Interfaces
Mula S   +3 more
europepmc   +1 more source

Toward Safer and Sustainable Lithium Metal Batteries: Fluorine‐Free Solid Polymer Electrolytes

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
An analysis to assess the impact of fluorine in polymer electrolyte‐based lithium metal batteries has been conducted. It has been demonstrated that fluorine‐free LiTIM salt delivers a electrochemical performance similar to that of its fluorinated analogue salts, given the complete lithium dissociation in coordination with PEO and the restricted anion ...
David Fraile‐Insagurbe   +10 more
wiley   +1 more source

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