Results 21 to 30 of about 150,666 (188)

Hydroxyapatite promotes superior adhesion and proliferation of telomerase transformed keratocytes in comparison with inert plastic skirt materials used in leading contemporary keratoprostheses [PDF]

open access: yes, 2005
Aim: Published clinical series suggest the osteoodontokeratoprosthesis (OOKP) may have a lower extrusion rate than current synthetic keratoprostheses. The OOKP is anchored in the eye wall by autologous tooth.
Allen, B.D.S.   +6 more
core   +2 more sources

Effect of PTFE and Some Additives of Engine Oil on Tribological Properties between Polyamide and Carbon Steel

open access: yesTribology Online, 2018
Effect of polytetrafluoroethylene (PTFE) and some additives of engine oil on tribological properties between polyamide (PA) and carbon steel was studied with a pin-on-disk type tribometer. Friction and wear properties of PA were improved by blending PTFE
Masayoshi Muraki   +2 more
doaj   +1 more source

Molecular Dynamics Calculation on the Adhesive Interaction Between the Polytetrafluoroethylene Transfer Film and Iron Surface

open access: yesFrontiers in Chemistry, 2021
During the friction process, the polytetrafluoroethylene (PTFE) adhered on the counterpart surface was known as the PTFE transfer film, which was fundamental to the lubricating performance of the PTFE.
Zhen Zuo   +7 more
doaj   +1 more source

Strong PP/PTFE microfibril reinforced composites achieved by enhanced crystallization under CO2 environment

open access: yesPolymer Testing, 2022
In-situ polypropylene/polytetrafluoroethylene (PP/PTFE) composites are amazing and promising materials because continuous PTFE fibrils can be dispersed in polymer matrix randomly and uniformly, and meanwhile, PTFE microfibrils can greatly enhance the ...
Aimin Zhang   +5 more
doaj   +1 more source

Comparison of axon extension: PTFE versus PLA formed by a 3D printer

open access: yesOpen Life Sciences, 2022
Three-dimensional (3D) printers mainly create 3D objects by stacking thin layers of material. The effect of the tools created using the fused deposition modeling (FDM) 3D printer on nerve cells remains unclear.
Kawai Naofumi   +3 more
doaj   +1 more source

THERMAL STABILITY STUDY OF GREASE FORMULATED FROM INDUSTRIAL WASTE OIL

open access: yesPlatform, a Journal of Engineering, 2020
This is aimed to investigate the effect of additives on thermal stability of grease formulated with waste transformer oil (WTO). One of the key factors of grease functionality is thermal stability.
W. Rahman   +3 more
doaj  

Deformation capability of poly(tetrafluoroethylene) materials: Estimation with X-ray diffraction measurements

open access: yesPolymer Testing, 2022
To manage the forming process of poly(tetrafluoroethylene) (PTFE) properly, we attempted to pursue the crystallographic properties via X-ray diffraction (XRD) measurements and elucidated that the deformation capability of the PTFE materials can be ...
Kimiyasu Sato   +4 more
doaj   +1 more source

Application of Collar Seals for Bearings in the Lunar Exploration Rover

open access: yesTribology Online, 2020
A lot of exploration missions have been planned for the moon, and lunar activity is likely to increase. The moon’s surface is covered by a great deal of dust, called regolith, and these particles can seriously damage mechanical components.
Koji Matsumoto   +6 more
doaj   +1 more source

Surface potential uniformity and sensitivity of large-area PTFE electret discs of different thicknesses produced by a modified corona poling rotating system for dosimetry applications [PDF]

open access: yesJournal of Advanced Dielectrics, 2019
In this study, large-area (6-cm diameter) Teflon polytetrafluoroethylene (PTFE) discs of different thicknesses (0.2-, 0.5- and 1 -mm) were negatively and positively charged by using the “modified single point-to-plane corona poling rotating system”.
A. Komeijani, H. Bagheri, B. Shekarchi
doaj   +1 more source

Reflectance of Polytetrafluoroethylene (PTFE) for Xenon Scintillation Light

open access: yes, 2009
Gaseous and liquid xenon particle detectors are being used in a number of applications including dark matter search and neutrino-less double beta decay experiments.
A. Pereira   +10 more
core   +1 more source

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