Results 71 to 80 of about 174,445 (306)

Fixed-Time Path-Following-Based Underactuated Unmanned Surface Vehicle Dynamic Positioning Control

Journal of Marine Science and Engineering
The development of dynamic positioning (DP) algorithms for an unmanned surface vehicle (USV) is attracting great interest, especially in support of complex missions such as sea rescue.
Shuai Zheng, Yumin Su, Jiayuan Zhuang, Yueqi Tang, Guangjie Yi   +4 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Kinematic and Dynamic Analysis of New Polar Positioning System Dedicated to Mechatronic Laser Glass Engraving System

, 2014
Analytical formulas describing the kinematics and dynamics of a multibody system of a new polar positioning system dedicated to mechatronic laser glass or other transparent dielectrics engraving system will be presented in this work.
Trochimczuk, R., R. Trochimczuk
core   +1 more source

Nonlinear Gains Recursive Sliding Mode Dynamic Positioning of Ships with Uncertainties and Input Saturation

Journal of Marine Science and Engineering
To address dynamic positioning (DP) challenges encountered by ships navigating amid unknown model parameters, environmental disturbances, and input saturation, this study proposes a nonlinear gains recursive sliding mode (RSM) DP control law. Within this
Fuwen Su, Huajun Zhang
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

rudolphsanta/Dynamic-Positioning---Offshore-Wind: Code Repository for: Enabling development of offshore wind power through dynamically positioned floating systems

, 2023
This repository contains the analysis codes for the manuscript: "Enabling development of offshore wind power through dynamically positioned floating systems" Authors: Rudolph Santarromana Ahmed Abdulla, Joana Mendonça, M.
Rudolph Santarromana
core   +2 more sources

Prescribed-Time Dynamic Positioning Control for USV with Lumped Disturbances, Thruster Saturation and Prescribed Performance Constraints

Remote Sensing
This work studies the dynamic positioning (DP) control issue of unmanned surface vessels subjected to thruster saturation, error constraints, and lumped disturbances composed of time-varying marine environmental disturbances and model parameter ...
Bowen Sui, Jianqiang Zhang, Zhong Liu
doaj   +1 more source

Design and Implementation of Pseudo-Inverse Thrust Allocation Algorithm for Ship Dynamic Positioning

IEEE Access, 2020
The pseudo-inverse method cannot optimize the angle and needs to give the azimuth angle artificially, therefore, when the dynamic positioning system has variable vector propellers and rudders, the pseudo-inverse method cannot be applied to the full ...
Baoyu Ye, Jianbin Xiong, Qinruo Wang, Yan Luo   +3 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

LPV identification of high performance positioning devices

, 2011
High performance positioning devices exhibit position dependent dynamics in the form of varying flexible modes, which are expected to dominate the dynamic behavior in the new generation of lightweight positioning structures.
Roland Toth, Hof, Van den, P.M.J., Peter S. C. Heuberger, Marc van de Wal, Hof, Van den, P.M.J.; id_orcid, Heuberger, P.S.C., Toth, R.; id_orcid, Toth, R., van de Wal, M., Paul M. J. Van den Hof   +9 more
core   +1 more source