نتایج جستجو برای: polytetrafluorethylene
تعداد نتایج: 73 فیلتر نتایج به سال:
In this research, a silver nanoparticle/polytetrafluorethylene (AgNP/PTFE) coating for metallic implants was fabricated using facile layer-by-layer method. PTFE nanoparticles were immobilized in sol–gel matrix and dip-coated onto 316L stainless steel via mussel-inspired approach followed by AgNP deposition. Benefiting from the synergistic effect of antibacterial non-stick PTFE, AgNP/PTFE exhibi...
Deformation in polymers is highly dependent on molecular structures and motion relaxation mechanisms, which are influenced by temperature mechanical load history. These features imply that some models can fit for specific classes of not others; moreover, these also include several non-linearities, turns out to be challenging computational simulation. This work develops simulates a thermal-struc...
Vectorial vortex analysis is used to determine the polarization states of an arbitrarily polarized terahertz (0.1-1.6 THz) beam using THz achromatic axially symmetric wave (TAS) plates, which have a phase retardance of Δ = 163° and are made of polytetrafluorethylene. Polarized THz beams are converted into THz vectorial vortex beams with no spatial or wavelength dispersion, and the unknown polar...
BACKGROUND AND AIMS Transjugular intrahepatic portosystemic shunts (TIPS) are used in patients with cirrhosis for the prevention of variceal rebleeding. METHODS We retrospectively evaluated re-bleeding rate, patency, mortality, and transplant-free survival (TFS) in cirrhotic patients receiving TIPS implantation for variceal bleeding between 1994-2014. RESULTS 286 patients received TIPS (n =...
The open architecture of cathodes in Li–air batteries implies the need for porosity with adequate pore size distribution and surface energy optimization regard to electrolyte. interaction liquid cathode material, especially wetting properties, which depend on roughness porosity, electrolyte needs be understood properly avoid flooding assure high active areas. In this work, contact angle goniome...
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