Results 61 to 70 of about 248,739 (301)

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Finite-horizon estimation of randomly occurring faults for a class of nonlinear time-varying systems [PDF]

open access: yes, 2014
This paper is concerned with the finite-horizon estimation problem of randomly occurring faults for a class of nonlinear systems whose parameters are all time-varying.
Ding, SX, Dong, H, Gao, H, Wang, Z
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Fault Diagnosis of Hybrid Systems Using Particle Filter Based Hybrid Estimation Algorithm

open access: yesChemical Engineering Transactions, 2013
Hybrid systems are composed of discrete event dynamic systems and continuous time dynamic systems, which interact with each other. The fault diagnosis of hybrid systems is particularly difficult.
J.B. Guo   +4 more
doaj   +1 more source

Robust fault estimation and fault-tolerant control for nonlinear Markov jump systems with time-delays

open access: yesAutomatika, 2021
The problem of the robust fault estimation and robust fault-tolerant control, for a class of nonlinear time-delayed Markov jump systems (MJSs) with both actuator and sensor faults, was studied.
Xingjian Fu, Xinrui Pang
doaj   +1 more source

Attitude Fault-Tolerant Control of Aerial Robots with Sensor Faults and Disturbances

open access: yesDrones, 2023
In this paper, sensor fault diagnosis and fault tolerant control strategy are investigated for quadcopters under sensor faults and disturbances. We propose the fault diagnosis estimation system and the fault-tolerant control (FTC) method.
Ngoc-P. Nguyen, Phongsaen Pitakwatchara
doaj   +1 more source

Integrated fault estimation and accommodation design for discrete-time Takagi-Sugeno fuzzy systems with actuator faults [PDF]

open access: yes, 2011
This paper addresses the problem of integrated robust fault estimation (FE) and accommodation for discrete-time Takagi–Sugeno (T–S) fuzzy systems. First, a multiconstrained reduced-order FE observer (RFEO) is proposed to achieve FE for discrete-time ...
Jiang, Bin, Shi, Peng, Zhang, Ke
core   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Fault-tolerant multi-agent formation control using distributed nonlinear MPC with discrete-time super-twisting sliding mode fault estimation

open access: yesFranklin Open
This paper presents a novel Fault-Tolerant Distributed Nonlinear Model Predictive Controller for Formation Control of Agents with Fractional-Order Dynamics (DNMPC-FCFO).
Farshid Aazam Manesh   +3 more
doaj   +1 more source

Adaptive Observer-Based Fault Estimation for Stochastic Markovian Jumping Systems

open access: yesAbstract and Applied Analysis, 2012
This paper studies the adaptive fault estimation problems for stochastic Markovian jump systems (MJSs) with time delays. With the aid of the selected Lyapunov-Krasovskii functional, the adaptive fault estimation algorithm based on adaptive observer is ...
Shuping He, Fei Liu
doaj   +1 more source

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