Results 51 to 60 of about 39,492 (350)

In vitro wear resistance of three types of polymethyl methacrylate denture teeth [PDF]

open access: yes, 2008
The wear resistance of denture teeth is important to the longevity of removable prostheses of edentulous patients. The ability of denture teeth to maintain a stable occlusal relationship over time may be influenced by this property.
BONFANTE, Gerson   +5 more
core   +3 more sources

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

open access: yesAdvanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong   +11 more
wiley   +1 more source

Effect of phosphate ester addition on transverse strength and hardness of heat cured acrylic denture base material

open access: yesJournal of Baghdad College of Dentistry, 2018
Background: acrylic resin denture base consider a common denture base material for its acceptable cost, aesthetic and easy processing but still has disadvantages including easy of fracture and low impact strength.
Zahraa S. abed karkosh   +1 more
doaj   +1 more source

Process for producing a well-adhered durable optical coating on an optical plastic substrate [PDF]

open access: yes, 1978
A low temperature plasma polymerization process is described for applying an optical plastic substrate, such as a polymethyl methacrylate lens, with a single layer abrasive resistant coating to improve the durability of the ...
Kubacki, R. M.
core   +1 more source

Scalable Fabrication of Height‐Variable Microstructures with a Revised Wetting Model

open access: yesAdvanced Engineering Materials, EarlyView.
Height‐variable microstructures are fabricated using a scalable CO2 laser machining approach, enabling precise control of wettability through structural gradients. Classical wetting models fail to capture height‐induced effects, necessitating a revised theoretical framework.
Prabuddha De Saram   +2 more
wiley   +1 more source

Size and Density Evolution of a Single Microparticle Embedded in a Plasma [PDF]

open access: yesPhysics of Plasmas 24, 083701 (2017), 2017
This article presents two measurement techniques to determine the diameter of a single dust particle during plasma operation. Using long-distance microscopy (LDM), the particle is imaged from outside the plasma chamber. In combination with phase-resolved resonance measurements the development of the volume-averaged particle mass density is measured ...
arxiv   +1 more source

Thermal Degradation Studies on PMMA–HET Acid Based Oligoesters Blends [PDF]

open access: yes, 2010
Imparting thermal stability to polymethyl methacrylate (PMMA) without affecting its optical clarity is attempted by incorporating HET acid based oligoesters.
Rajkumar, Thangamani   +4 more
core   +1 more source

Enhanced Terahertz Spectroscopy of a Monolayer Transition Metal Dichalcogenide

open access: yesAdvanced Functional Materials, EarlyView.
An ad‐hoc engineered metallic surface is employed to perform enhanced terahertz spectroscopy of a monolayer transition metal dichalcogenide (TMD). Thanks to a local absorption boost of 104, this technique allows for the extraction of the phonon resonance features and effective permittivity of the 2D material, paving the way for the rational design of ...
Xin Jin   +11 more
wiley   +1 more source

Experience of using polymethyl methacrylate membranes for anti-HLA antibodies’ elimination by hemodialysis in renal transplant recipients

open access: yesТрансплантология (Москва), 2019
Introduction. In recipients with pre-existing sensitization with incompatible antigens of the main histocompatibility complex, the kidney graft survival after retransplantations directly depends on the level of anti-HLA antibodies.
E. I. Pervakova   +4 more
doaj   +1 more source

Encapsulated graphene based Hall sensors on foil with increased sensitivity [PDF]

open access: yesPhys Status Solidi B, 253, 2316-2320 (2016), 2017
The encapsulation of graphene based Hall sensors on foil is shown to be an effective method for improving the performance in terms of higher sensitivity for magnetic field detection. Two types of encapsulation were investigated: a simple encapsulation of graphene with polymethyl methacrylate (PMMA) as a proof of concept and an encapsulation with ...
arxiv   +1 more source

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