Results 71 to 80 of about 3,789,340 (294)

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Pointy-Headed Fires: On the Convex Duality Between Fire Shapes and Spread Rates in Fire Growth Models

open access: yesFire
Background: Some widely used wildland fire behavior models, like the Fire Area Simulator (FARSITE), propagate fire fronts by computing the front-normal velocity (spread rate) as a function of local inputs and the front-normal direction.
Valentin Waeselynck, David Saah
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

On solutions of Hamilton-Jacobi equations with exponential dependence on momentum

open access: yesСовременная математика: Фундаментальные направления
Three initial problems for one-dimensional Hamilton-Jacobi equations of evolutionary type are considered on a bounded time segment. In all problems, the Hamiltonians depend on the coordinate and momentum variables.
L. G. Shagalova
doaj   +1 more source

The performance of 1% solution of baking soda as the mouthwashing for elderly xerostomia patients on the salivary secretion

open access: yesPadjadjaran Journal of Dentistry, 2018
Introduction: The ageing process in older adults could cause a decreasing salivary secretion. Indicators of salivary secretion could be measured by observing an increasing salivary volume and pH, and a decreasing salivary viscosity.
Ririn Ariyanti   +2 more
doaj   +1 more source

On the viscosity solutions of a stochastic differential utility problem [PDF]

open access: yes
We prove existence, uniqueness and gradient estimates of stochastic differential utility as a solution of the Cauchy problem for degenerate nonlinear partial differential equation.
Andrea Pascucci, Fabio Antonelli
core  

Low‐Temperature Imidization of Polyimides (PI) for Scalable Manufacturing of Flexible Wearable Electronics

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐temperature imidization of PEG‐modified polyimide enables fully screen‐printed, roll‐to‐roll fabrication of flexible electrodes on PET substrates, delivering robust mechanical durability and reliable ECG/EMG signal performance for wearable electronics.
Akib Abdullah Khan, Jong‐Hoon Kim
wiley   +1 more source

XXII. Viscosity of solutions [PDF]

open access: yesThe London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1900
(1900). XXII. Viscosity of solutions. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science: Vol. 49, No. 298, pp. 274-286.
openaire   +2 more sources

Demo 14-06 Oil Viscosity

open access: yes, 2001
This video demonstrates the difference in viscosity between three weights of motor oil. Tubes filled with the oil, with a small bubble on top, are quickly inverted. The bubbles begin to rise, with the bubble in the least viscous oil rising most rapidly,

core  

Effects of water and fluorine on the viscosity of albite melt at high pressure: a preliminary investigation [PDF]

open access: yes, 1985
The viscosities of fluorine- and water-bearing melts based on albite composition have been determined at 7.5, 15 and 22.5 kbar by the falling-sphere method. All melt viscosities decrease isothermally with increasing pressure.
Mysen, Bjørn O., Dingwell, Donald B.
core   +1 more source

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