Results 61 to 70 of about 1,145,296 (299)

Determination of optimal damping parameters for seismic isolation systems [PDF]

open access: yesИнженерно-строительный журнал, 2013
If seismic isolation system consists of elastic-damping bearings, it transforms protected object into the flow-frequency system. Thus, damping in SIS should be high enough to eliminate resonance effect. Therefore application of damping makes a problem of
N.V. Kovaleva   +2 more
doaj   +1 more source

Universality near zero virtuality

open access: yes, 1996
In this paper we study a random matrix model with the chiral and flavor structure of the QCD Dirac operator and a temperature dependence given by the lowest Matsubara frequency. Using the supersymmetric method for random matrix theory, we obtain an exact,
A.D. Jackson   +53 more
core   +1 more source

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

CORRELATION-SPECTRAL ANALYSIS OF THE TOPOGRAPHY OF ENGINEERING SURFACES AT THE NANOSCALE LEVEL

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
The nanotopography of some typical technical surfaces is investigated and the characteristics of the nanoroughness profile as a random process are experimentally determined – the autocorrelation function and spectral density.
V.V. Izmailov, M.V. Novoselova
doaj   +1 more source

The Density of States and the Spectral Shift Density of Random Schroedinger Operators

open access: yes, 2000
In this article we continue our analysis of Schroedinger operators with a random potential using scattering theory. In particular the theory of Krein's spectral shift function leads to an alternative construction of the density of states in arbitrary ...
Barbaroux J. M.   +11 more
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

DETERMINATED SIGNALS MATHEMATICAL MODELS ON THE BASIS OF PRIMITIVE FUNCTION SYSTEMS

open access: yesРоссийский технологический журнал, 2016
The article deals with universal systems on the basis of primitive functions for approximating pulse signals of different types and duration and providing simple mathematical formulation as well.
V. N. Isakov
doaj   +1 more source

Computational aspects of Bayesian spectral density estimation

open access: yes, 2011
Gaussian time-series models are often specified through their spectral density. Such models present several computational challenges, in particular because of the non-sparse nature of the covariance matrix.
Chopin, Nicolas   +2 more
core   +5 more sources

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

Perturbations of diagonal matrices by band random matrices [PDF]

open access: yes, 2011
We exhibit an explicit formula for the spectral density of a (large) random matrix which is a diagonal matrix whose spectral density converges, perturbated by the addition of a symmetric matrix with Gaussian entries and a given (small) limiting variance ...
Benaych-Georges, Florent   +1 more
core   +3 more sources

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