Results 71 to 80 of about 212,355 (342)

Tribological behaviour of the low and high viscosity peek against steel using different contact pressures [PDF]

open access: yes, 2013
In the market of polymers for tribological applications polyetheretherketone (PEEK) are often used for satisfying requests coming from industry regarding enhanced properties such as, thermal stability, friction and wear resistance.
Andó, Mátyás   +4 more
core  

Engaging youth in post-disaster research: Lessons learned from a creative methods approach [PDF]

open access: yes, 2016
Children and youth often demonstrate resilience and capacity in the face of disasters. Yet, they are typically not given the opportunities to engage in youth-driven research and lack access to official channels through which to contribute their ...
Cox, Robin S   +5 more
core   +3 more sources

Comparative Study of Friction and Wear Performance of PEK, PEEK and PEKK Binders in Tribological Coatings

open access: yesPolymers, 2022
Tribological coatings are widely used in industry, particularly when the conventional oil lubrication of sliding surfaces has to be replaced by maintenance-free contacts.
Judith M. Pedroso   +3 more
semanticscholar   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Polyetheretherketone as a Biomaterial for Spinal Applications [PDF]

open access: yes, 2006
Threaded lumbar interbody spinal fusion devices (TIBFD) made from titanium have been reported to be 90% effective for single-level lumbar interbody fusion, although radiographic determination of fusion has been intensely debated in the literature.
Estes, Bradley T.   +5 more
core   +1 more source

A peek into cancer-associated fibroblasts: origins, functions and translational impact

open access: yesDisease Models & Mechanisms, 2018
In malignant tumors, cancer cells adapt to grow within their host tissue. As a cancer progresses, an accompanying host stromal response evolves within and around the nascent tumor.
Valerie S. LeBleu, R. Kalluri
semanticscholar   +1 more source

Enhancing Direct Solar Water Splitting via ALD of Multifunctional TiO2/Pt Nanoparticle Coatings With Engineered Interfaces to GaAs/GaInP Tandem Cells

open access: yesAdvanced Functional Materials, EarlyView.
Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth   +8 more
wiley   +1 more source

The Use of PEEK and PEKK in Prosthodontics

open access: yesCurrent Research in Dental Sciences
It is stated that the search for new materials in today's dentistry continues in order to meet aesthetic and functional expectations. As a result of these searches, materials such as PEEK (polyetheretherketone) , PEKK(polyetherketoneketone) and BioHPP ...
Hatice Özdemir, Gizem Erdaş
doaj   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

Polyetheretherketone in Orthopedic Plate Design to Facilitate Fracture Recovery

open access: yesJournal of Biomechanical Science and Engineering, 2011
Polyetheretherketone (PEEK) is becoming an interesting alternative to titanium alloys and stainless steel in orthopedics. This study compares two types of PEEK fracture plates (natural and carbon reinforced) with titanium plates of the same design ...
Jason SANDERSON   +6 more
doaj   +1 more source

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