Results 21 to 30 of about 226,718 (360)

The effect of postmastectomy radiation therapy on breast implants. Material analysis on silicone and polyurethane prosthesis [PDF]

open access: yes, 2018
The pathogenic mechanism underlying capsular contracture is still unknown. It is certainly a multifactorial process, resulting from human body reaction, biofilm activation, bacteremic seeding, or silicone exposure.
Bini, Fabiano   +13 more
core   +1 more source

The Impact of Polysulfone Solution Concentration on the Morphology of the Support Layer in Thin-Film Composite Membranes [PDF]

open access: yesعلوم و تکنولوژی پلیمر
Hypothesis: Among different membrane processes, reverse osmosis is widely used in desalination, water treatment, and the preparation of ultra-pure water.
samal babanzadeh   +1 more
doaj   +1 more source

Rheological and Mechanical Gradient Properties of Polyurethane Elastomers for 3D-Printing with Reactive Additives [PDF]

open access: yes, 2019
Polyurethane (PU) elastomers with their broad range of strength and elasticity are ideal materials for additive manufacturing of shapes with gradients of mechanical properties.
Auhl, Dietmar   +4 more
core   +1 more source

Polyurethane Toggles [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2020
We consider the involutions known as toggles, which have been used to give simplified proofs of the fundamental properties of the promotion and evacuation maps. We transfer these involutions so that they generate a group $\mathscr P_n$ that acts on the set $S_n$ of permutations of $\{1,\ldots,n\}$.
openaire   +2 more sources

Multi-scale modeling in thermal conductivity of Polyurethane incorporated with Phase Change Materials using Physics-Informed Neural Networks [PDF]

open access: yes, 2023
Polyurethane (PU) possesses excellent thermal properties, making it an ideal material for thermal insulation. Incorporating Phase Change Materials (PCMs) capsules into Polyurethane (PU) has proven to be an effective strategy for enhancing building envelopes.
arxiv   +1 more source

Low-Threshold and Narrow Linewidth Diffusive Random Lasing in Rhodamine 6G Dye-Doped Polyurethane with Dispersed ZrO$_2$ Nanoparticles [PDF]

open access: yesJ. Opt. Soc. Am. B 31, 2363-2370, (2014), 2015
We report on low-threshold and narrow linewidth intensity feedback random lasing in Rhodamine 6G dye-doped polyurethane with dispersed ZrO$_2$ nanoparticles. Depending on the dye/particle concentration, the lasing threshold is (6.8--15.4) MW/cm$^2$ and the linewidth is (4--6) nm. The lasing threshold as a function of nanoparticle concentration is found
arxiv   +1 more source

Thermoplastic polyurethane-graphene nanoplatelets microcellular foams for electromagnetic interference shielding [PDF]

open access: yesGraphene Technology 5, 33-39 (2020), 2021
The incorporation of graphene-related materials as nanofiller can produce multifunctional foams with enhanced specific properties and density reduction. Herein we report on the preparation of microcellular thermoplastic polyurethane/graphene foams by batch foaming.
arxiv   +1 more source

Synthesis of polyurethane/clay nanocomposites based palm oil polyol coating [PDF]

open access: yesJournal of Mechanical Engineering and Sciences, 2015
In this study, we investigated the Polyurethane paint based on palm oil with the addition of nanoparticles montmorillonite as a heat-resistant. The composites with 1 wt%, 3 wt% and 5 wt% of bentonite filler content obtained by synthesizing in situ were ...
Teuku Rihayat   +4 more
doaj   +1 more source

High density culturing of porcine hepatocytes immobilized on nonwoven polyurethane-based biomatrices [PDF]

open access: yes, 2001
Objective: Hepatocytes are increasingly used as functional units in bioartificial liver devices. The objective of the present study was to investigate the feasibility of culturing porcine hepatocytes in high density on a novel polyurethane-based nonwoven
Castell, M. J.   +6 more
core   +1 more source

Corrosion Resistance of Steel/Zinc with Silicate Nanoparticles/Polyurethane Paint Systems in NaCl Solution [PDF]

open access: yes, 2012
Surface characteristics and corrosion behaviour of bare electrogalvanized steel coated with polymer/nano-silicate particles added to the electrogalvanizing bath were studied by scanning electron microscopy (SEM), energy dispersive spectrometer (EDXS) and
Di Sarli, Alejandro Ramón   +2 more
core   +1 more source

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