Results 41 to 50 of about 48,526 (265)
FEBS Letters, EarlyView.An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley +1 more source
Estimating the weight of metric minimum spanning trees in sublinear time [PDF]
, 2008 In this paper we present a sublinear-time $(1+\varepsilon)$-approximation randomized algorithm to estimate the weight of the minimum spanning tree of an $n$-point metric space. The running time of the algorithm is $\widetilde{\mathcal{O}}(n/\varepsilon^{\
Christian Sohler +3 more
core +1 more source
Hardness of Approximation for Euclidean k-Median [PDF]
, 2021 The Euclidean k-median problem is defined in the following manner: given a set of n points in d-dimensional Euclidean space ℝ^d, and an integer k, find a set C ⊂ ℝ^d of k points (called centers) such that the cost function Φ(C,) ≡ ∑_{x ∈ } min_{c ∈ C ...
Goyal, Dishant +2 more
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Approximation in Hölder spaces
Advances in MathematicsWe introduce new vanishing subspaces of the homogeneous Hölder space $\dot{C}^{0,ω}(X,Y)$ in the generality of a doubling modulus $ω$ and normed spaces $X$ and $Y.$ For many couples $X,Y,$ we show these vanishing subspaces to completely characterize those Hölder functions that admit approximations, in the Hölder seminorm, by smooth, Lipschitz and ...
Mudarra, Carlos, Oikari, Tuomas
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Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes
FEBS Letters, EarlyView.Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez +2 more
wiley +1 more source
Connectedness In Ideal Approximation space
Wasit Journal for Pure SciencesIn this paper we study the notion connectedness in approximation spaces and ideal connectedness are introduced, with an explanation of their differences.
Huda Mohsin, Faik Mayah
doaj +1 more source
Global approximation in harmonic spaces [PDF]
Proceedings of the American Mathematical Society, 1994 This paper characterizes, in terms of thinness, compact sets K in a suitable harmonic space Ω
Gardiner, Stephen J. +2 more
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From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
Uniform approximation for period-quadrupling bifurcations. [PDF]
, 1997 . We derive a uniform approximation for semiclassical contributions of periodic orbits to the spectral density which is valid for generic period-quadrupling bifurcations in systems with a mixed phase space.
Henning Schomerus +5 more
core
Displacement Field Approximations for Force-Based Elements in Large Displacement Analyses
Journal of Applied Mathematics, 2012 This paper investigates different approximation techniques for planar beam column elements in force-based methods. The three fields, introduced in this review, are: curvature-based displacement interpolation (CBDI) used in matrix-based flexibility ...
M. Vahidi +3 more
doaj +1 more source