Results 61 to 70 of about 192,799 (329)

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Chebyshev approximation by γ-polynomials

Journal of Approximation Theory, 1973
The approximation by sums of exponentials shares some of the properties of rational approximation. But there is an essential difference: the best approximation is not always unique. There may be more than one isolated solution, which means that phenomena arise which are not met in the linear theory.
openaire   +1 more source

Micro and Nanostructural Diversity of Lizard Osteoderm Capping Tissue in Relation to Mechanical Performance

Advanced Functional Materials, EarlyView.
This study shows that lizard osteoderm capping tissue is a hyper‐mineralized hydroxyapatite layer consistently covering the superficial osteoderm surface in those species studied here, yet it varies greatly in morphology, nanostructure, and mechanical performance across species.
Adrian Rodriguez‐Palomo, Marius Didziokas, Malene Siri Berg Jacobsen, Thorbjørn Erik Køppen Christensen, Innokenty Kantor, Mads Ry Vogel Jørgensen, Klaus Pagh Almtoft, Jesper Skovhus Thomsen, Anthony Herrel, Catherine J.A. Williams, Henrik Birkedal   +10 more
wiley   +1 more source

Approximation by transcendental polynomials [PDF]

Annales Polonici Mathematici, 1985
The author obtains the following result: Let h be a transcendental entire function of a complex variable. Let E be a compact subset of \({\mathbb{C}}\) such that \({\mathbb{C}}\setminus E\) is connected and let f be any function holomorphic in a neighbourhood of E. Then there exists a sequence of polynomials of two variables \(\{P_ k(z,w)\}\) such that
openaire   +1 more source

Pricing Basket Options by Polynomial Approximations [PDF]

Journal of Applied Mathematics, 2016
We propose a closed-form approximation for the price of basket options under a multivariate Black-Scholes model. The method is based on Taylor and Chebyshev expansions and involves mixed exponential-power moments of a Gaussian distribution. Our numerical results show that both approaches are comparable in accuracy to a standard Monte Carlo method, with
Pablo Olivares, Alexander Alvarez
openaire   +6 more sources

MagPiezo: A Magnetogenetic Platform for Remote Activation of Endogenous Piezo1 Channels in Endothelial Cells

Advanced Functional Materials, EarlyView.
MagPiezo enables wireless activation of endogenous Piezo1 channels without genetic modification using 19 nm magnetic nanoparticles and low‐intensity magnetic fields. It generates torque forces at the piconewton scale to trigger mechanotransduction in endothelial cells, standing as a novel platform to interrogate and manipulate Piezo1 activity in vitro.
Susel Del Sol‐Fernández, Mariarosaria De Simone, Yilian Fernández‐Afonso, Daniel Garcia‐Gonzalez, Pablo Martínez‐Vicente, Thomas van Zanten, Raluca M. Fratila, Maria Moros   +7 more
wiley   +1 more source

On Some Extensions of Szasz Operators Including Boas-Buck-Type Polynomials

Abstract and Applied Analysis, 2012
This paper is concerned with a new sequence of linear positive operators which generalize Szasz operators including Boas-Buck-type polynomials.
Sezgin Sucu, Gürhan İçöz, Serhan Varma   +2 more
doaj   +1 more source

Extremalis problémák többváltozós és súlyozott polinomokra = Extremal problems for multivariate and weighted polynomials [PDF]

, 2009
Jól ismert hogy a többváltozós polinomok sűrűek a d-dimenziós kompakt halmazokon folytonos függvények terében. A többváltozós polinomok egy fontos részhalmaza a homogén polinomok osztálya.
Kroó, András, Szabados, József
core  

Ultrasound‐Triggered Gelation for Restoring Biomechanical Properties of Degenerated Functional Spinal Units

Advanced Healthcare Materials, EarlyView.
This study introduces an innovative approach to treating intervertebral disc degeneration using ultrasound‐triggered in situ hydrogel formation. Proof‐of‐concept experiments using optimized biomaterial and ultrasound parameters demonstrate partial restoration of biomechanical function and successful integration into degenerated disc tissue, offering a ...
Veerle A. Brans, Anna P. Constantinou, Matthew J. Kibble, Valeria Nele, Daniel Reumann, Luca Bau, Sebastien J. P. Callens, James P. K. Armstrong, Nicolas Newell, Constantin C. Coussios, Molly M. Stevens, Michael D. Gray   +11 more
wiley   +1 more source

Chebyshev approximation by γ-polynomials, II

Journal of Approximation Theory, 1974
AbstractBest approximation in the sense of Chebyshev is not always unique for γ-polynomials. In this paper we prove that in the normal case the number of best approximations is finite. A necessary and sufficient condition on alternants of local best approximations is established.
openaire   +2 more sources