Results 131 to 140 of about 1,341,415 (398)

An investigation into the oil transport and starvation of piston ring pack

open access: yes, 2019
In order to accurately predict the lubricant film thickness and generated friction in any tribological contact, it is important to determine appropriate boundary conditions, taking into account the oil availability and extent of starvation.
S. R. Bewsher   +4 more
semanticscholar   +1 more source

An extended Elrod-Adams model to account for backpressure and blow-by inception [PDF]

open access: yesarXiv, 2019
The Piston-Ring-Liner system is the main tribological component of internal combustion engines. The Elrod-Adams model is customarily used to numerically assess the hydrodynamics of different ring designs and liner surface treatments. However, that model does not incorporate the backpressure boundary condition, which in this case corresponds to the ...
arxiv  

Development of multiparametric bioprinting method for generation of 3D printed cell‐laden structures

open access: yesBiotechnology Progress, EarlyView.
Abstract The organ transplantation field requires new approaches for replacing and regenerating tissues due to the lack of adequate transplant methods. Three‐dimensional (3D) extrusion‐based bioprinting is a rapid prototyping approach that can engineer 3D scaffolds for tissue regeneration applications. In this process, 3D printed cell‐based constructs,
Sophie Lipshutz   +4 more
wiley   +1 more source

SAAP‐148 Oligomerizes into a Hexamer Forming a Hydrophobic Inner Core

open access: yesChemBioChem, EarlyView.
The highly cationic and hydrophobic antimicrobial peptide SAP‐148 effectively eradicates multidrug‐resistant bacteria, persistent cells, and biofilms without inducing resistance. Its efficiency is likely due to its ability to disrupt bacterial membranes as an oligomer, forming a stable alpha‐helical hexameric bundle with three parallel dimers that ...
Aden Hodzic   +15 more
wiley   +1 more source

Phase Diagrams of Carbonate Materials at High Pressures, with Implications for Melting and Carbon Cycling in the Deep Earth

open access: yesGeophysical Monograph Series, Page 137-165., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov   +3 more
wiley  

+3 more sources

Characterising the friction and wear between the piston ring and cylinder liner based on acoustic emission analysis [PDF]

open access: yes, 2014
In this paper, an experimental investigation was carried out to evaluate the friction and wear between the cylinder liner and piston ring using acoustic emission (AE) technology.
Ball, Andrew   +4 more
core  

Measure solutions of one-dimensional piston problem for compressible Euler equations of Chaplygin gas [PDF]

open access: yesarXiv, 2019
We are concerned with the one-dimensional piston problem for the compressible Euler equations of Chaplygin gas. If the piston moves at constant subsonic speed to the uniform gas, there exists an integral weak solution for the piston problem, consisting of a shock separating constant states ahead of the piston.
arxiv  

Influence of Pd/AC Catalytic Properties on the Continuous Production of Hydrogen from Formic Acid

open access: yesChemCatChem, EarlyView.
A highly efficient palladium/activated carbon (Pd/AC) catalyst, prepared with PdCl₂ and nanopowdered AC via wet impregnation without stabilizing agents, achieves superior Pd dispersion, and doubling hydrogen yields compared to commercial catalysts. This advancement improves durability, minimizes regeneration frequency, and enables scalable hydrogen ...
Celia Martín   +6 more
wiley   +1 more source

A Piston-Rotaxane with Two Potential Stripes: Force Transitions and Yield Stresses

open access: yesMolecules, 2013
We examine a rod piston-rotaxane system, where the positions of several mobile rings on the axle are controlled by an external force acting on one of the rings. This allows us to access the translational entropy of the rings.
Edith M. Sevick, David R.M. Williams
doaj   +1 more source

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