Results 11 to 20 of about 26,907 (263)
Direct Iminization of PEEK [PDF]
Macromolecules, 2011 Semi-crystalline poly(ether ketone)s are important high-temperature engineering thermoplastics, but are difficult to characterize at the molecular level because of their insolubility in conventional organic solvents. Here we report that polymers of this type, including PEEK, react cleanly at high temperatures with low-volatility aralkyl amines to ...
Manolakis, Ioannis +2 more
openaire +1 more source
A Peek Outside Our Universe [PDF]
Symmetry, 2022 According to general relativity (GR), a universe with a cosmological constant Λ, like ours, is trapped inside an event horizon, r<3/Λ. What is outside? We show, using Israel (1967) junction conditions, that there could be a different universe outside. Our universe looks like a black hole for an outside observer. Outgoing radial null geodesics cannot
Enrique Gaztañaga, Pablo Fosalba
openaire +2 more sources
Physics Letters B, 2021 6 pages, 8 figures, text clarified, references added, systematic errors estimated, argument on surface tension omitted, Fig.7 added to clarify the limitation of the method, no significant change in conclusion.
Ryuichiro Kitano +3 more
openaire +2 more sources
Bimetallic ions regulated PEEK of bone implantation for antibacterial and osteogenic activities
Materials Today Advances, 2021 After the surgical implantation of polyetheretherketone (PEEK) orthopedic biomaterials, there are two major clinical challenges, implantation-related pathogen infection and poor osseointegration-caused aseptic loosening, threaten the lifespan and the ...
Lei Wang +8 more
doaj +1 more source
Theoretical Computer Science, 2010 This paper studies peek arc consistency, a reasoning technique that extends the well-known arc consistency technique for constraint satisfaction. In contrast to other more costly extensions of arc consistency that have been studied in the literature, peek arc consistency requires only linear space and quadratic time and can be parallelized in a ...
Manuel Bodirsky, Hubie Chen
openaire +3 more sources
Biocompatibility and osteoinductive ability of casein phosphopeptide modified polyetheretherketone
Frontiers in Bioengineering and Biotechnology, 2023 Polyetheretherketone (PEEK) is a potential implant material for dental application due to its excellent mechanical properties. However, its biological inertness and poor osteoinductive ability limited its clinical application.
Peng Qiu +17 more
doaj +1 more source
Alternating Shear Force of Respiration Regulates Cell Interactions of Fibroblasts and Macrophages to Promote Soft Tissue Integration of Chest Wall Polyetheretherketone Implants. [PDF]
Adv Sci (Weinh)Given that PEEK chest wall implants induce shear force at the soft tissue‐implant interface due to respiratory motion in the early in vivo post‐implantation stage. We confirmed that this mechanical stimulus triggers the PIEZO1/ITGB1/YAP1 signalling axis in L929 and the STAT6/p‐STAT6 pathway in RAW264.7, which in turn mediates adhesion and migration of ...
Huang R +14 more
europepmc +2 more sources
Clinical efficiency of a new allograft cervical cage in treatment of cervical spondylosis
Di-san junyi daxue xuebao, 2019 Objective To evaluate the efficacy and reliability of a novel allograft cervical cage in treatment of cervical spondylosis, and observe the effect of subsidence on clinical outcome.
FANG Qing, LI Yang, WU Wenjie, LIU Xun
doaj +1 more source
Journal of Pharmacy and Bioallied Sciences, 2023 The objective of this study is to compare retention capacity of mandibular implant-supported overdenture with all zirconia, zirconia–PEEK, and all PEEK telescopic attachments. Sixty acrylic resin models of mandible were used. Telescopic attachment system
Gujjalapudi Mahalakshmi +6 more
doaj +1 more source
Frontiers in Materials, 2022 Implant repair is a common means to restore the normal function of the hard tissues (bone or teeth). At present, the commonly and potentially used implant materials include titanium alloy (Ti), zirconia (Zr), polyetheretherketone (PEEK), and 30% carbon ...
Jingjing Su +10 more
doaj +1 more source