Results 21 to 30 of about 25,706 (168)

Research progress in carbon fiber sizing agents for PEEK composites

Cailiao gongcheng, 2022
Thermoplastic polyether ether ketone (PEEK) composites are widely used in aerospace field due to their excellent fracture toughness, impact resistance and material versatility.
XING Yu, ZHANG Daijun, WANG Chengbo, NI Hongjiang, LI Jun, CHEN Xiangbao   +5 more
doaj   +1 more source

3D Finite Element Analysis of Implant-supported Fixed Partial Denture Frameworks Fabricated from Fiber-reinforced Composite and Polyetheretherketone. [PDF]

Al-Rafidain Dental Journal
Aims: This study aimed to test different design parameters for ISFPD frameworks fabricated from fiber-reinforced composite and polyetheretherketone. Material and Methods: 12 different framework digital designs made using the AutoCAD program were sent to ...
Azher Mazin Agha, Ahmed Asim Saeed Al-Ali, Ayad Amjad Abdulrazzak   +2 more
doaj   +1 more source

Effects of PEEK's surface roughness on seizure behaviors of PEEK/steel pairs under oil-lubricated sliding contacts

Mechanical Engineering Journal, 2017
Effects of surface roughness of polyether ether ketone (PEEK) on the seizure behaviors of PEEK/steel pairs are studied using a block-on-ring wear tester under oil-lubricated conditions.
Tomoharu AKAGAKI, Yamato KURAOKA, Fumio TAKEO, Kazuyuki FURUYA, Masahiko KAWABATA   +4 more
doaj   +1 more source

PEEK Polimerinin Dişhekimliğinde Kullanımı

Selcuk Dental Journal, 2020
ÖZ: Polietereterketon (PEEK) polimeri yarı kristalin termoplastik polimer sınıfının öne çıkan polimerlerinden biridir. PEEK materyali kimyasal ve fiziksel dayanıklılık, biouyumluluk ve insan kemiğine yakın elastik modülüs (4 GPa) gibi uygun mekanik ...
Ziya Seferli, Serkan Sarıdağ
doaj   +1 more source

Peeking at the Impossible

Notre Dame Journal of Formal Logic, 1997
In `On the cohomology of impossible figures' [Topologie Struct. 17, 11-16 (1991; Zbl 0743.52002)] \textit{R. Penrose} provides a mathematical analysis of certain geometrically impossible objects. Essentially, they are those whose parts cannot be consistently assembled, as is expressed by the failure of certain equations to have solutions.
openaire   +2 more sources

A novel digital tool to guide provision of near vision glasses for presbyopia correction in the community

Frontiers in Ophthalmology
PurposeTo develop and validate a digital tool to support non-eye specialists, such as community health workers (CHWs), to provide appropriate near vision glasses to correct presbyopia, in line with the WHO SPECS 2030 initiative.MethodsEpidemiological ...
Marzieh Katibeh, Shalinder Sabherwal, Shalinder Sabherwal, Mohd Javed, Elanor Watts, Elanor Watts, Sergio Latorre-Arteaga, Sergio Latorre-Arteaga, Nigel M. Bolster, Nigel M. Bolster, Darren Coverley, Alice Pintus, Vince Hewitt, Nam Thaker, Andrew Bastawrous, Andrew Bastawrous   +15 more
doaj   +1 more source

Hydroxyapatite-incorporation improves bone formation on endosseous PEEK implant in canine tibia

Journal of Applied Biomaterials & Functional Materials, 2020
Background: Poly Ether Ether Ketone (PEEK) has been considered as a potential alternative material for endosseous dental implants, for its low elastic modulus, biocompatibility, and low cost in customized device manufacture.
Yuan-ming Geng, Dong-ni Ren, Shu-yi Li, Zong-yi Li, Xiao-qing Shen, Yu-yu Yuan   +5 more
doaj   +1 more source

Assessment of eye health programme reach by comparison with rapid assessment of avoidable blindness (RAAB) survey data, Talagang, Pakistan

BMC Primary Care
Background The purpose of this study was to quantify how much of the burden of visual impairment (VI) and unmet need in Talagang, identified by Rapid Assessment of Avoidable Blindness (RAAB) survey data, has been addressed by Community Eye Health (CEH ...
Muhammad Zahid Jadoon, Zahid Awan, Muhammad Moin, Rizwan Younas, Sergio Latorre-Arteaga, Elanor Watts, Marzieh Katibeh, Andrew Bastawrous   +7 more
doaj   +1 more source

An ultrafast peek into the ultracold [PDF]

Science, 2016
Quantum Simulation Gases of Rydberg atoms—exotic atoms in which one of the electrons is orbiting the nucleus at a large distance—can simulate the effects of long-range interactions in many-body systems.
openaire   +2 more sources

Effects of polishing protocols on the surface roughness and color stability of polyetheretherketone (PEEK)

European Oral Research
Purpose: This study aimed to evaluate the effects of different polishing protocols on the surface properties and color stability of the polyetheretherketone (PEEK).
Sezgi Cinel Şahin, Hatice Lamia Elif Sağesen   +1 more
doaj   +1 more source