Results 41 to 50 of about 23,419,933 (264)

Modal Derivatives for Efficient Vibration Prediction of Geometrically Nonlinear Structures with Friction Contact

open access: yesApplied Sciences
This paper evaluates the performance of the Rubin reduction methods, enhanced with static modal derivatives, for vibration analysis of geometrically nonlinear structures with friction contact.
Fahimeh Mashayekhi, Stefano Zucca
doaj   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Forced response of shrouded blades with a coupled static/dynamic approach [PDF]

open access: yes, 2011
A coupled static-dynamic method is proposed and applied to bladed disks with shrouds, in order to calculate the nonlinear forced response in presence of friction damping in the frequency domain.
Zucca, Stefano   +2 more
core  

Geometrically Nonlinear Static Analysis of High-Aspect-Ratio Truss-Braced Wing

open access: yesEngineering Proceedings
Truss-braced wings (TBWs) feature higher aspect ratios with a lighter weight and lower bending moment than conventional wings. These wings show significant potential for performance improvements in terms of fuel efficiency.
Yanxin Huang, Jinchi Chen, Qingyuan Ma
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

open access: yesFEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey   +4 more
wiley   +1 more source

Numerical Analysis of Time-Accurate Solution of Nonlinear Flow Models by Implicit Finite Differences

open access: yes, 2003
Implicit finite differences are often applied to solve flow models. A standard technique to solve these equations is Newton\u27s method. lf time step is too large although the difference equation could be computationally stable, Newton\u27s method may ...
Dey, S. K.
core   +1 more source

Assessment of Accuracy the Nonlinear Static Analysis in Determining Behavior Factor Reinforced Concrete Moment-Resisiting Frames [PDF]

open access: yesJournal of Structural and Construction Engineering, 2015
Common methods analysis and design of structures are based according to elastic analysis and and reduction of earthquake forces. This reduction design load in the codes is done by the behavior factors.
Alireza Habibi, Reza gholami
doaj  

Digital Cognitive Phenotyping for Differential Diagnosis and Monitoring in Neurological Conditions

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To assess the utility, accessibility, and equivalence to supervised scales of online cognitive assessment in older individuals with cognitive impairment. Methods Patients with Alzheimer's disease (AD, n = 31), idiopathic normal pressure hydrocephalus (iNPH, n = 26), and traumatic brain injury (TBI, n = 23) completed online cognitive ...
Martina Del Giovane   +10 more
wiley   +1 more source

Non-Linear Static Analysis of Masonry Buildings under Seismic Actions [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2018
Assessing existing masonry buildings in seismic zones is a critical issue, due to the high vulnerability of the built environment. Commonly, beside local analysis, refined assessment procedures are used based on non-linear static methods, like the ...
Maria Luisa Beconcini   +5 more
doaj  

A Numerical-Experimental Method for Drop Impact Analysis of Composite Landing Gear

open access: yesShock and Vibration, 2017
The special material performance, manufacturing process, machining behavior, and operating condition of composite materials cause uncertainties to inevitably appear in the mechanical properties of composite structures.
Yongliang Guan   +3 more
doaj   +1 more source

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