Results 121 to 130 of about 1,275 (248)
PRECONDITIONING OF VOXEL FEM ELLIPTIC SYSTEMS
TASK Quarterly, 2007 The presented comparative analysis concerns two iterative solvers for large-scale linear systems related to µFEM simulation of human bones. The considered scalar elliptic problems represent the strongly heterogeneous structure of real bone specimens ...
SVETOZAR MARGENOV, YAVOR VUTOV
doaj
Periodontology 2000, EarlyView.Abstract Objectives Smoking tobacco is a critical modifiable risk factor for periodontal and peri‐implant diseases. This narrative review integrates established behavioral theories with communication‐based psychological processes to propose an evidence‐based model for smoking cessation support in periodontal care.
Christoph A. Ramseier
wiley +1 more source
Experimental Physiology, EarlyView.Abstract Blood flow restriction (BFR) has been identified as a potential countermeasure to mitigate physiological deconditioning during spaceflight. Guidelines recommend that tourniquet pressure be prescribed relative to limb occlusion pressure (LOP); however, it is unclear whether body tilting or reduced gravity analogues influence LOP.
Patrick Swain, Nick Caplan, Luke Hughes
wiley +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend Schematic overview of the experimental and computational framework for investigating hiPSC‐CM electrophysiology with MEA systems. The MEA‐based model integrates experimental data with phenotype‐specific ionic models and tissue‐level heterogeneity.
Sofia Botti +2 more
wiley +1 more source
Mitochondrial oxidative stress, calcium and dynamics in cardiac ischaemia‐reperfusion injury
The Journal of Physiology, EarlyView.Abstract figure legend Heart attack causes ischaemia–reperfusion injury in cardiomyocytes. Mitochondria generate reactive oxygen species (ROS), leading to oxidative stress. High levels of mitochondrial calcium (Ca2+) activate the mitochondrial permeability transition pore (mPTP), and excess ROS levels can lower the Ca2+ required to activate the mPTP ...
Emily Rozich +5 more
wiley +1 more source
When NCX switches sides: Experimental and computational insights into Ca2+ regulation in the heart
The Journal of Physiology, EarlyView.Abstract figure legend Due to its presence inside the dyadic cleft, Na+/Ca2+ exchanger (NCX) builds a functional unit together with L‐type calcium channels and ryanodine receptors in the dyadic cleft. NCX acts bidirectionally (forward and reverse mode) dependent on extracellular calcium ([Ca2+]o) and sodium ([Na+]o) concentrations and the membrane ...
Wilhelm Neubert +6 more
wiley +1 more source
Fast Numerical Solvers for Parameter Identification Problems in Mathematical Biology. [PDF]
J Sci ComputBenková K, Pearson JW, Ptashnyk M.
europepmc +1 more source
Parallel Preconditioned Conjugate-Gradients Methods on Transputer Networks
, 1993 We show how highly efficient parallel implementations of basic linear algebra routines may be used as building blocks to implement efficient higher level algorithms. We discuss the solution of systems of linear equations using a preconditioned Conjugate-Gradients iterative method on a network of transputers.
da Cunha, Rudnei Dias, Hopkins, Tim
openaire +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend Activation time (AT) maps from right ventricular apical pacing in a human ventricles model with longer action potential duration in the His‐Purkinje system (HPS) than in the myocardium (MYO). For pacing with a long S1S2 coupling interval (CI), the AT from the myocardial pacing site to the first AT of the HPS (ATMYO) is longer ...
Jason D. Bayer +3 more
wiley +1 more source
Generalizable preconditioning strategies for MAP PET reconstruction using Poisson likelihood. [PDF]
Front Nucl MedColombo MN, Paganoni M, Presotto L.
europepmc +1 more source