Results 1 to 10 of about 44,175 (214)

Improving equity, efficiency and adherence to referral in Pakistan's eye health programmes: Pre- and post-pandemic onset

open access: yesFrontiers in Public Health, 2022
BackgroundOver one billion people worldwide live with avoidable blindness or vision impairment. Eye Health Programmes tackle this by providing screening, primary eye care, refractive correction, and referral to hospital eye services.
Asad Aslam Khan   +12 more
doaj   +1 more source

Retention force of overdenture retained with telescopic crowns: A comparison of polyether ether ketone and zirconia ceramic telescopic crowns [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2020
Introduction/Objective. Recently, new materials for double crowns have been introduced, such as zirconia and polyether ether ketone (PEEK). However, some characteristics of these materials, such as retentive force and duration of “settling in phase ...
Milić-Lemić Aleksandra   +6 more
doaj   +1 more source

Polimer Kompozit ve Çelik Diske Karşı Cam Elyaf Takviyeli Poli-Eter-Eter-Keton (PEEK) Kompozitin Aşınma Özellikleri

open access: yesEskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi, 2022
Bu çalışmada, %30 cam elyaf (CE) katkılı poli-eter-eter-keton (PEEK) polimerinin termoset poliester kompozit ve AISI 316L paslanmaz çelik diske karşı kuru ortam şartları altında sürtünme ve aşınma özellikleri incelenmiştir. Sürtünme ve aşınma çalışmaları
Veysel Furkan Ünal   +2 more
doaj   +1 more source

Improvement studies for equitable and evidence-based innovation: an overview of the ‘IM-SEEN’ model

open access: yesInternational Journal for Equity in Health, 2023
Background Health inequalities are ubiquitous, and as countries seek to expand service coverage, they are at risk of exacerbating existing inequalities unless they adopt equity-focused approaches to service delivery.
Luke N. Allen   +14 more
doaj   +1 more source

EXPERIMENTAL SETTING FOR TESTING THE BOND STRENGTH BETWEEN METAL ALLOY AND PEEK [PDF]

open access: yesJournal of IMAB, 2021
Purpose: The aim of the article is to present an experimental setting for bending strength testing of metal specimens covered with PEEK. Materials and methods: Three groups of metal specimens made of cobalt chromium alloy are produced using the lost wax
Zhivko Georgiev   +2 more
doaj   +1 more source

Lithium disilicate and PEEK implant-retained single crowns - a randomized, prospective clinical study [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2022
Introduction/Objective. Comparing two materials under the same conditions is the best way to define differences between them. Ceramic-reinforced polyether-etherketone (PEEK) is a polymer that has many possible uses in dentistry as already well-known ...
Joksimović Ena   +5 more
doaj   +1 more source

Direct Iminization of PEEK [PDF]

open access: yesMacromolecules, 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

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

Peeking into the θ vacuum

open access: yesPhysics 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

Study Of the compression behaviours of 3D-printed PEEK/CFR-PEEK sandwich composite structures

open access: yesVirtual and Physical Prototyping, 2022
Single-component materials and homogeneous structures cannot adequately meet the various demands of ideal bone implants. Therefore, the use of three dimensional (3D) printing to form multi-materials and composites has received considerable attention ...
Houfeng Jiang   +3 more
doaj   +1 more source

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