Results 51 to 60 of about 38,247 (298)

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

An inverse LU preconditioner based on the Sherman–Morrison formula

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
An approximate inverse LU preconditioner is constructed based on the Sherman–Morrison formula. Applying recursively that inversion formula a multiplicative decomposition of the inverse of a matrix is obtained.
Bru R., Cerdán J., Marín J., Mas J.
doaj   +1 more source

A generalized preconditioned MHSS method for a class of complex symmetric linear systems

Mathematical Modelling and Analysis, 2013
Based on the MHSS (Modified Hermitian and skew-Hermitian splitting) and preconditioned MHSS methods, we will present a generalized preconditioned MHSS method for solving a class of complex symmetric linear systems.
Mehdi Dehghan, Marzieh Dehghani-Madiseh, Masoud Hajarian   +2 more
doaj   +1 more source

Metallofullerenol Sc3N@C80(OH)18: A New Generation Radioprotector Protecting Human Erythrocytes Against Multiple Biochemical Damage Modes Upon Gamma Irradiation, Identifying It as a Scavenger of Short‐ and Long‐Lived Radicals

Advanced Healthcare Materials, EarlyView.
Metallofullerenol Sc3N@C80(OH)18 demonstrates strong radioprotective properties as a scavenger of both short‐ and long‐lived radicals. The study reveals protection of human erythrocytes from γ‐radiation–induced biochemical damage via post‐irradiation removal of primary and secondary reactive oxidants, supported by pulse radiolysis kinetics.
Jacek Grebowski, Maciej Studzian, Szymon Lekki‐Porebski, Anna Konarska, Marian Wolszczak, Grzegorz Litwinienko, Lukasz Pulaski   +6 more
wiley   +1 more source

Nonlinear Heat Diffusion Problem Solution with Spatio-Temporal Constraints Based on Regularized Gauss–Newton and Preconditioned Krylov Subspaces

Eng
In this work, we proposed a dynamic inverse solution with spatio-temporal constraints of the nonlinear heat diffusion problem in 1D and 2D based on a regularized Gauss–Newton and Krylov subspace with a preconditioner.
Luis Fernando Alvarez-Velasquez, Eduardo Giraldo   +1 more
doaj   +1 more source

A Microphysiological Interface of Skeletal Myobundles and Inflamed Adipose Tissue for Recapitulating Muscle Dysfunction in an Obese Microenvironment

Advanced Healthcare Materials, EarlyView.
A human cell‐based microphysiological system integrates engineered muscle tissues with an inflamed adipose–macrophage niche to model obese microenvironment‐induced muscle dysfunction. Muscle contraction is quantified by pillar deflection coupled with computational stiffness estimation. Secretome and transcriptomic profiling reveal inflammation‐mediated
Seunggyu Kim, Tianxin Cao, Zhengpeng Wan, Jaesang Kim, Zhuxuan Li, Legairre A. Radden II, Rakesh Santhanam, Eunkyung Clare Ko, Tatsuya Osaki, Sarah Spitz, Hyunmin Moon, Maria Proestaki, Seokbeom Roh, Gyudo Lee, Jessie S. Jeon, Curtis R. Warren, Roger D. Kamm   +16 more
wiley   +1 more source

A theory of secant preconditioners [PDF]

Mathematics of Computation, 1993
In this paper we analyze the use of structured quasi-Newton formulae as preconditioners of iterative linear methods when the inexact-Newton approach is employed for solving nonlinear systems of equations. We prove that superlinear convergence and bounded work per iteration is obtained if the preconditioners satisfy a Dennis-Moré condition. We develop a
openaire   +1 more source

Compression‐Tension‐Asymmetry and Stiffness Nonlinearity of Collagen‐Matrigel Composite Hydrogels

Advanced Healthcare Materials, EarlyView.
Self‐assembled collagen hydrogel matrices are widely used in tissue engineering applications. These matrices stiffen and contract laterally under tension due to fiber alignment and soften and collapse under compression due to fiber buckling. It is demonstrated that filler materials, such as Matrigel, linearize the mechanical behavior of collagen ...
David Böhringer, Jan Hinrichsen, Radik Gataulin, Sandra Wiedenmann, Marina Spörrer, Selda Sherifova, Paul Steinmann, Gerhard A. Holzapfel, Ben Fabry, Silvia Budday   +9 more
wiley   +1 more source

Two Preconditioners for Time-Harmonic Eddy-Current Optimal Control Problems

Mathematics
In this paper, we consider the numerical solution of a large complex linear system with a saddle-point form obtained by the discretization of the time-harmonic eddy-current optimal control problem.
Xin-Hui Shao, Jian-Rong Dong
doaj   +1 more source

Krylov Subspace Solvers and Preconditioners [PDF]

ESAIM: Proceedings and Surveys, 2018
In these lecture notes an introduction to Krylov subspace solvers and preconditioners is presented. After a discretization of partial differential equations large, sparse systems of linear equations have to be solved. Fast solution of these systems is very urgent nowadays. The size of the problems can be 1013 unknowns and 1013 equations.
openaire   +4 more sources