Results 71 to 80 of about 447,343 (284)

Asymptotic behaviour of solutions to nonlinear parabolic equations with variable viscosity and geometric terms

Electronic Journal of Differential Equations, 2007
In this paper we study the asymptotic behaviour of solutions of certain nonlinear parabolic equations with variable viscosity and geometric terms. We generalize the results on the large time behaviour and vanishing viscosity limits obtained earlier ...
Kayyunnapara Thomas Joseph
doaj  

Effect of Changes in the Concentrations of Sodium Chloride, Sodium Bicarbonate, and Citric Acid on the Surface Tension and Viscosity of Solutions of Certain Polymers

Al-Mustansiriyah Journal of Science
Background: The polymer’s improved properties enable its application in numerous fields. Different concentrations of sodium chloride (NaCl), citric acid (C6H8O7), and sodium bicarbonate (NaHCO3) were added to aqueous solutions of the following polymers:
Najla Ali Elgheryani
doaj   +1 more source

Preparation and Characterization of Chitosan/Polyvinyl Alcohol Blends-A Rheological Study

E-Journal of Chemistry, 2010
Blends of chitosan (CS) and polyvinyl alcohol (PVA) of different proportions (considering chitosan as the main component) were prepared. The rheological properties of the obtained blend solutions such as the shearing viscosity and the shear stress were ...
Esam A. El-Hefian, Mohamed Mahmoud Nasef, Abdul Hamid Yahaya   +2 more
doaj   +1 more source

Novel cannula design improves large volume auto-injection rates for high viscosity solutions. [PDF]

Drug Deliv, 2022
Roberts BC, Rini C, Klug R, Sherman DB, Morel D, Pettis RJ.   +5 more
europepmc   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

Comparison principle for parabolic equations in the Heisenberg group

Electronic Journal of Differential Equations, 2005
We define two notions of viscosity solutions to parabolic equations in the Heisenberg group, depending on whether the test functions concern only the past or both the past and the future.
Thomas Bieske
doaj  

Elucidation of a lingual detection mechanism for high-viscosity solutions in humans. [PDF]

Food Funct, 2022
Miles BL, Wu Z, Kennedy KS, Zhao K, Simons CT.   +4 more
europepmc   +1 more source

Interaction of Ladle Slag With Varying SiO2 Content and Recyclate‐Based MgO–C Refractories

Advanced Engineering Materials, EarlyView.
Ladle slags (CaO/Al2O3 = 1) with 1–20 wt% SiO2 were investigated in contact with industrial MgO–C refractories fabricated from fresh magnesia and 50 wt% recyclate. The sessile drop method at 1600°C reveals intensive gas formation, delayed slag infiltration in recyclate‐based samples, and, under high‐SiO2 slag, formation of a dense MgAl2O4‐rich ...
Anton Yehorov, Eldar Salpagarov, Anhelina Mospan, Till Manon Jannis Stadtmüller, Thomas Schemmel, Christos Georgios Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Maximum principles for viscosity solutions of weakly elliptic equations

Bruno Pini Mathematical Analysis Seminar, 2019
Maximum principles play an important role in the theory of elliptic equations. In the last decades there have been many contributions related to the development of fully nonlinear equations and viscosity solutions.
Antonio Vitolo
doaj   +1 more source

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source