Results 41 to 50 of about 150,666 (188)

The strong influence of substrate conductivity on droplet evaporation [PDF]

open access: yes, 2009
We report the results of physical experiments that demonstrate the strong influence of the thermal conductivity of the substrate on the evaporation of a pinned droplet.
B. R. DUFFY   +15 more
core   +1 more source

PTFE, Collars, and Patches

open access: yesJournal of Investigative Surgery, 1992
The results of PTFE grafts to crural vessels have been sufficiently poor for some surgeons to consider primary amputation for critical ischemia in the absence of suitable lengths of autologous vein from arm or leg. However, the results of two anastomotic techniques using a short segment of interposed vein, are encouraging.
M R, Tyrrell   +4 more
openaire   +2 more sources

Comparative study on microstructure and properties of different designed PTFE/Cu materials

open access: yesJournal of Materials Research and Technology, 2022
Polytetrafluoroethylene (PTFE)/Cu is an ideal low-density candidate preferred for energetic charge warheads, which can penetrate reactive armour without explosion.
Xuezhi Tang   +4 more
doaj   +1 more source

Controlling shell-side crystal nucleation in a gas-liquid membrane contactor for simultaneous ammonium bicarbonate recovery and biogas upgrading [PDF]

open access: yes, 2014
A gas–liquid hollow fibre membrane contactor (HFMC) process has been introduced for carbon dioxide (CO2) separation from biogas where aqueous ammonia (NH3) is used to chemically enhance CO2 absorption and initiate heterogeneous nucleation of the reaction
Autin, Olivier   +3 more
core   +1 more source

Non-equilibrium heat capacity of polytetrafluoroethylene at room temperature [PDF]

open access: yes, 2007
Polytetrafluoroethylene can be considered as a model for calorimetric studies of complex systems with thermodynamics transitions at ambient temperature. This polymer exhibits two phase transitions of different nature at 292 K and 303 K.
Bourgeois, O.   +3 more
core   +3 more sources

Sliding wear mechanism of polytetrafluoroethylene (PTFE) and PTFE composites

open access: yesWear, 1992
Abstract The previous literature regarding the wear of polytetrafluoroethylene (PTFE) is discussed, as are the mechanistic theories proposed to date for wear reduction via fillers. The mild-severe transition for unfilled PTFE is investigated as a function of sliding speed and temperature, and guidelines for maintenance of mild wear are developed.
T.A. Blanchet, F.E. Kennedy
openaire   +1 more source

Surface Chemistry for Improvement in Load-Carrying Capacity of Poly(Ether-Ether-Ketone)-Based Materials by Poly(Tetrafluoroethylene)

open access: yesTribology Online, 2008
The tribological properties of poly(ether-ether-ketone) (PEEK) against steel was evaluated by a ring-on-flat type tribo-test under rotating motion. Addition of poly(tetrafluoroethlene) (PTFE) as solid lubricants improved the load-carrying capacity of the
Ichiro Minami   +5 more
doaj   +1 more source

Development of a measurement setup to determine the frictional properties of tissuemimicking materials for vascular models

open access: yesCurrent Directions in Biomedical Engineering
In this study, a measurement setup was developed to determine the frictional properties between tissue-mimicking and implant materials. Nitinol and Polytetrafluoroethylene (PTFE) were selected as implant materials, while Polyvinyl alcohol (PVA) hydrogel ...
Karcher Alisa   +3 more
doaj   +1 more source

The influence of surface energy on the self-cleaning of insect adhesive devices [PDF]

open access: yes, 2012
The ability of insects to adhere to surfaces is facilitated by the use of adhesive organs found on the terminal leg segments. These adhesive pads are inherently 'tacky' and are expected to be subject to contamination by particulates, leading to loss of ...
Autumn   +51 more
core   +1 more source

Repair of bone segmental defects with bioactive glass and a non-absorbable membrane

open access: yesCiencia Veterinaria, 2017
Se informa la reparación de defectos segmentales óseos de tamaño crítico mediante la combinación de vidrio bioactivo y una membrana no absorbible de politetrafluoroetileno expandido (PTFe).
Santiago Andres Audisio   +6 more
doaj  

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