Results 1 to 10 of about 40,252 (328)

Perspex (polymethyl methacrylate) electrets [PDF]

open access: bronzeJournal of Applied Physics, 1972
The decay of the heterocharge of Perspex thermoelectrets as a function of the applied field intensity was studied. This suggests that the decay of the heterocharge is not continuous but occurs in discontinuous jumps. Such a behavior suggests the formation of polarized aggregates that are superficially similar to Weiss domains, which appear to be ...
S. Natarajan
openaire   +3 more sources

In vitro evaluation of shear bond strength of polymethyl methacrylate/montmorillonite modified Biodentine with dental resin composite [PDF]

open access: yesEuropean Oral Research
Purpose: The aim of this study was to evaluate the bond strength between Biodentine, modified with polymethyl methacrylate/Montmorillonite nanoclay, and resin composite at different stages of Biodentine's setting time.Materials and Methods: Nanoclay was ...
Fagr Hassan Elmergawy   +2 more
doaj   +2 more sources

The Decay of Irradiation Defects in Dyed Polymethyl Methacrylate [PDF]

open access: bronzeAustralian Journal of Chemistry, 1962
The decay of defects in polymethyl methacrylate caused by γ-irradiation has been followed by electron-spin resonance. The samples were irradiated at room temperature and annealed at 80, 90, and 100 C. Two radical species can be recognized by their different modes of decay.
ID Campbell, FD Looney
openaire   +3 more sources

Graft Copolymerization of Methyl Methacrylate Monomer onto Starch and Natural Rubber Latex Initiated by Gamma Irradiation [PDF]

open access: yesAtom Indonesia, 2011
To obtain the degradable plastic, the graft copolymerization of methyl methacrylate onto starch and natural rubber latex was conducted by a simultaneous irradiation technique. Gamma-ray from cobalt-60 source was used as the initiator.
S. Iskandar
doaj   +1 more source

Effect of Reaction Temperature on Tacticity in Polymerization of Methyl Methacrylate: A Study by Nuclear Magnetic Resonance Spectroscopy [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2022
Hypothesis: In the synthesis of vinyl polymers, one of the important parameters that play a significant role in the physical-mechanical properties is the tacticity of monomers within the polymer chain.
Mohammadreza Jozaghkar   +3 more
doaj   +1 more source

Dalbavancin is thermally stable at clinically relevant temperatures against methicillin-sensitive Staphylococcus Aureus [PDF]

open access: yesJournal of Bone and Joint Infection, 2023
Introduction: While the rate of orthopaedic infections has remained constant over the years, the burden on healthcare systems continues to rise with an aging population.
A. K. Hoyt   +7 more
doaj   +1 more source

Polymethyl methacrylate (PMMA) intolerance

open access: yesIndian Journal of Ophthalmology, 1985
Dada V, Kalra V, Angra S
doaj   +2 more sources

Depth-dose distribution in potatoes with low-energy X-rays

open access: yesTạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2022
Irradiation is known as a handful measure to inhibit potato sprouting, kill harmful bacteria, and increase preservation. The absorbed dose is one of the essential characteristics of the irradiation process. In this study, the depth-dose distributions in
Thi Nguyet Ha Nguyen   +9 more
doaj   +1 more source

PMMA – EGGSHELL COMPOSITE PREPARATION AND STUDYING MECHANICAL PROPERTIES AS A DENTAL MATERIAL

open access: yesJournal of Engineering and Sustainable Development, 2020
In recent years, many researchers used polymethyl methacrylate in dental applications due to good mechanical and physical properties. In this research, the eggshell powder had mixed with polymethyl methacrylate resin for the preparations of new ...
Reem Alaa Mohammed
doaj   +3 more sources

Effects of boron on the mechanical properties of polymethylmethacrylate denture base material

open access: yesEuropean Oral Research, 2021
Purpose The objective of this study was to determine whether the addition of different types of boron (Borax, Boric Acid and Colemanite) to polymethyl methacrylate denture base resin would improve flexural and impact strengths, and surface hardness of ...
Ali Kemal Özdemir   +4 more
doaj   +1 more source

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