Results 151 to 160 of about 96,341 (238)

Implicit Central Difference Approximations of Averaged Dynamics of Highly Oscillatory Systems With Applications to Direct Optimal Control

open access: yesOptimal Control Applications and Methods, EarlyView.
Trajectory optimization of highly oscillatory systems can require huge computational efforts if the horizon of the problem is much larger than the duration of a single cycle. To alleviate this effort, stroboscopic averaging methods can be used, which utilize local single‐cycle simulations of the oscillatory dynamics, to then approximate and integrate ...
Jakob Harzer   +3 more
wiley   +1 more source

Single screw extrusion of long discontinuous fiber‐reinforced polymers: Pellet motion and heat transfer

open access: yesPolymer Composites, EarlyView.
Sequential coupling of motion and heat‐transfer of long‐discontinuous fiber reinforced pellets in a single screw extruder. Abstract Single screw extrusion is widely used in material pre‐compounding, extrusion additive manufacturing, and injection molding.
Vasudha Kapre   +2 more
wiley   +1 more source

Mechanical properties and predictive analysis of multi‐material polypropylene‐glass fiber sandwich structures produced by material extrusion

open access: yesPolymer Composites, EarlyView.
From filament properties to mechanical property prediction of 3D‐printed PP/PPGF sandwich composites. Abstract Combining multiple filaments in material extrusion (MEX) to tailor mechanical properties is increasingly significant in science and applications.
Julia Utz   +3 more
wiley   +1 more source

Numerical data generation for building machine learning models for permeability estimation of fibrous structures

open access: yesPolymer Composites, EarlyView.
Data‐driven emulators can estimate the permeability in less than 10% of the time compared to numerical permeability determination. Abstract The challenge of developing effective multiscale flow simulation methods is to take into account all relevant physical effects from fiber to component level, but remain manageable in terms of computational effort ...
Tim Schmidt   +5 more
wiley   +1 more source

Spermidine supplementation influences mitochondrial number and morphology in the heart of aged mice

open access: yesJournal of Anatomy, Volume 242, Issue 1, Page 91-101, January 2023., 2023
Aging was associated with hypertrophy of left venticular myocardium in mice without an increase in mitochondrial number. Spermidine treatment increased the number of cardiomyocyte mitochondria significantly. The three‐dimensional ultrastructure of mitochondria showed signs of disarrangement in aged mice which was reduced by spermidine treatment ...
Jil Messerer   +8 more
wiley   +1 more source

Generalizations of the Euler-Maclaurin formula

open access: yesJournal of Mathematical Analysis and Applications, 1979
Leroy Derr, D. Sarafyan, Curtis Outlaw
openaire   +2 more sources

SpatialCNS‐PBPK: An R/Shiny Web‐Based Application for Physiologically Based Pharmacokinetic Modeling of Spatial Pharmacokinetics in the Human Central Nervous System and Brain Tumors

open access: yesCPT: Pharmacometrics &Systems Pharmacology, EarlyView.
ABSTRACT Quantitative understanding of drug penetration and exposure in the human central nervous system (CNS) and brain tumors is essential for the rational development of new drugs and optimal use of existing drugs for brain cancer. To address this need, we developed and validated a novel 9‐compartment permeability‐limited CNS (9‐CNS) physiologically
Charuka D. Wickramasinghe   +2 more
wiley   +1 more source

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