Results 111 to 120 of about 47,269,723 (340)

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

open access: yesFEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty   +13 more
wiley   +1 more source

Two-step Newton methods

open access: yes, 2018
Capítulo del libro "Contemporary study of iterative methods: convergence, dynamics and applications"In this chapter we extend the applicability of two-step Newton's method for solving nonlinear ...
Argyros, Ioannis K   +4 more
core   +1 more source

Improving the convergence of iterative methods [PDF]

open access: yes, 1983
summary:Let $x_{k+1}=Tx_k+b$ be an iterative process for solving the operator equation $x=Tx+b$ in Hilbert space $X$. Let the sequence $\{x_k\}^\infty _{k=o}$ formed by the above described iterative process be convergent for some initial approximation ...
Zítko, Jan, G. Maess
core   +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

An Assessment of Iterative Reconstruction Methods for Sparse Ultrasound Imaging

open access: yesSensors, 2017
Ultrasonic image reconstruction using inverse problems has recently appeared as an alternative to enhance ultrasound imaging over beamforming methods.
Solivan A. Valente   +4 more
doaj   +1 more source

Iterative methods of Ambartsumian equations’ solutions. Part 2

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022
Background. Ambartsumian equation and its generalizations are one of the main integral equations of astrophysics, which have found wide application in many areas of physics and technology.
I.V. Boykov, A.A. Pivkina
doaj   +1 more source

Calculus of nth roots and third order iterative methods

open access: yes, 2001
A family of iterative methods is analyzed for the problem of extracting the nth root of a positive number R. The method is used to solve the nonlinear equation t n - R = 0.
Salanova, M.A.   +7 more
core   +1 more source

MARK4 enhances stress granule formation under oxidative stress and increases tau accumulation

open access: yesFEBS Open Bio, EarlyView.
MARK4 (red dots) localizes to stress granules (orange dots) and promotes their formation under oxidative stress by modulating TIA1 (blue dots). MARK4 and TIA1 synergistically increase tau (purple) accumulation, and the reduction of the TIA1 ortholog suppresses neurodegeneration in a fly model.
Sho Nakajima   +8 more
wiley   +1 more source

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