Results 71 to 80 of about 816,574 (293)

Flight Loads Analysis with Inertially Coupled Equations of Motion [PDF]

open access: yes, 2005
In this work an approach for simulation of a large passenger aircraft with high precision equations of motion and a new method of dynamic loads calculation is presented, which can be used for maneuver and gust loads analysis in the time domain. Equations
Christian Reschke, Reschke, Christian
core   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Existence and structure analysis of attractors for new delayed Kirchhoff-type suspension bridge equations under stochastic perturbations with applications

open access: yesAin Shams Engineering Journal
This paper investigates the existence and structure of global attractors for a new class of delayed Kirchhoff-type suspension bridge equations under stochastic perturbations. Through the application of infinite-dimensional dynamical system techniques, we
Tahir Ullah Khan, Christine Markarian
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Dynamical behavior of damaged railway sleeper subjected to moving loads: Parametric study of crack properties

open access: yesVietnam Journal of Mechanics
This study investigates the dynamic responses of cracked beams placed on a visco-elastic foundation and subjected to moving loads. Utilizing the Euler–Bernoulli beam model, the behavior of the beams is characterized, accounting for multiple open cracks ...
Thuy-Duong Le, Le-Hung Tran
doaj   +1 more source

Online Model Learning of Buildings Using Stochastic Hybrid Systems Based on Gaussian Processes

open access: yesJournal of Control Science and Engineering, 2017
Dynamical models are essential for model-based control methodologies which allow smart buildings to operate autonomously in an energy and cost efficient manner.
Hamzah Abdel-Aziz, Xenofon Koutsoukos
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

An Electromechanical Pendulum Robot Arm in Action: Dynamics and Control

open access: yesShock and Vibration, 2017
The authors numerically investigate the dynamics and control of an electromechanical robot arm consisting of a pendulum coupled to an electrical circuit via an electromagnetic mechanism.
A. Notué Kadjie   +2 more
doaj   +1 more source

Experimental identification of stochastic processes using an uncertain computational non-linear dynamical model

open access: yes, 2008
International audienceThe paper deals with the identification of a model for the external loads applied to tubes bundles through the knowledge of dynamical responses.
Batou, Anas, Soize, Christian
core   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

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