Results 71 to 80 of about 541,360 (283)
Proton-3He elastic scattering at low energies and the “Ay Puzzle”
EPJ Web of Conferences, 2010 The Kohn variational principle and the hyperspherical harmonic technique are applied to study p − 3He elastic scattering at low energies. Preliminary results obtained using several interaction models are reported.
Kievsky A. +4 more
doaj +1 more source
, 2006 Let $Ay=f$, $A$ is a linear operator in a Hilbert space $H$, $y\perp N(A):=\{u:Au=0\}$, $R(A):=\{h:h=Au,u\in D(A)\}$ is not closed, $\|f_ -f\|\leq $. Given $f_ $, one wants to construct $u_ $ such that $\lim_{ \to 0}\|u_ -y\|=0$. A version of the DSM (dynamical systems method) for finding $u_ $ consists of solving the problem \bee \dotu_ (t ...
openaire +2 more sources
Morozov's discrepancy principle for Tikhonov-type functionals with nonlinear operators [PDF]
Inverse Problems, 2009 The article deals with some algorithms for the computation of approximate solutions to an ill-posed problem \[ F(x) = y \] where \(F: \;X \to Y\) is a (nonlinear) operator between reflexive Banach spaces \(X\) and \(Y\). These algorithms are based on the minimizing of a Tikhonov-type functional \[ J_{\alpha,q}(x) = \|F(x) - y^\delta\|^q + \alpha\Psi(x),
Anzengruber, Stephan W., Ramlau, Ronny
openaire +2 more sources
Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?
FEBS Letters, EarlyView.This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes +3 more
wiley +1 more source
, 2010 We study the construction and updating of spectral preconditioners for regularized Newton methods and their application to electromagnetic inverse medium scattering problems.
Hohage, Thorsten, Langer, Stefan
core +1 more source
FEBS 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
, 2015 Let G be a finite abelian group. We examine the discrepancy between subspaces of l^2(G) which are diagonalized in the standard basis and subspaces which are diagonalized in the dual Fourier basis.
Akemann, Charles A., Weaver, Nik
core +1 more source
Structural biology of ferritin nanocages
FEBS 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
A discrepancy principle for Tikhonov regularization with approximately specified data [PDF]
Annales Polonici Mathematici, 1998 A discrepancy principle of the form \(\|A_nx^\delta_{\alpha, n}- z^\delta_n\|= \delta^p/\alpha^q\) for \(n\) large enough and for \(p>0\), \(q>0\), is considered in order to choose the regularization parameter \(\alpha= \alpha(n,\delta)\) in the approximate equation \((A_n+\alpha I)x^\delta_{\alpha, n}= z^\delta_n\), of the regularized by Tikhonov ...
Nair, M. Thamban, Schock, Eberhard
openaire +4 more sources
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 +4 more
wiley +1 more source