نتایج جستجو برای: silicones
تعداد نتایج: 402 فیلتر نتایج به سال:
Anaplastology ISSN: 2161-1173 Anaplastology, an open access journal Volume 3 • Issue 1 • 1000125 methacrylates are durable they are relatively hard whereas silicones are flexible and soft. Pigmentation to replicate hair and skin features can be easily incorporated. It has an ability of stretching to an extent that it can become transparent at the corners and therefore blends smoothly with the s...
On the basis of first-principles calculations, we demonstrate the potential application of silicene as a highly sensitive molecule sensor for NH3, NO, and NO2 molecules. NH3, NO and NO2 molecules chemically adsorb on silicene via strong chemical bonds. With distinct charge transfer from silicene to molecules, silicene and chemisorbed molecules form charge-transfer complexes. The adsorption ener...
Medical-grade silicone elastomers were subjected to accelerated aging in saline to verify the hydrolytic stability of the elastomer. Tensile strength, elongation at break, and the elastomer stress measured at 100% or 200% elongation did not change significantly for peroxide-cured sheeting aged in 37 degrees C or 100 degrees C saline for 45 h. Under similar condition, hydrosilylation cured sheet...
A new class of surface-active compounds based on the combination of silicones and boronic acids is described. The properties of the compounds can be tuned by manipulation of both the hydrophobic (silicone size and 3D structure) and hydrophilic components (by binding different saccharides to the boronic acid). Stabilization of the four-coordinate boron structure is provided by Tris buffer that a...
There have been constant searches and researches which are taking place in the field of dental materials to best suit the ideal selection criteria to satisfy the functionality, biocompatibility, aesthetics as well as the durability as a maxillofacial material. Among all the different materials, Silicone is the most popularly used, but still studies are carried out to overcome their weaknesses a...
6. Armaly MF: Ocular tolerance to silicones: 1. Replacement of aqueous and vitreous by silicone fluids. Arch Ophthalmol 68:390, 1962. 7. Lee P, Donovan RH, and Mukai N: Intravitreous injection of silicone: An experimental study. Ann Ophthalmol 1:15, 1969. 8. Foerster MM, Esser J, and Laqua H: Silicone oil and its influence on electrophysiologic findings. Am J Ophthalmol 99:201, 1985. 9. Gregor ...
The impressive surface activity of silicones can be enhanced by the incorporation of hydrophilic organic functional groups and polymers. Traditional routes to such compounds, which typically involve platinum-catalyzed hydrosilylation, suffer from incompatibility with certain functional groups. B(C(6)F(5))(3)-catalyzed condensation of hydrosilanes with alkoxysilanes offers new opportunities to p...
There is a demand in modern technology for IT devices with high speeds of operation and high integration. Moore’s law [1] predicts a doubling of complexity for storage every two years and is one popular expression for the tendencies to increase the performance of devices concerning size and speed. One can ask if there is a natural limit for the speed of operation, what factors are limiting this...
Purpose: To identify the right plane in augmented rhinoplasty to help facilitate the facial plastic surgeons in creating more natural look in oriental noses. Materials and methods: One hundred and ten adult Thai cadavers comprising 61 males and 49 females from Department of Anatomy, Faculty of Science, Mahidol University were included in this study. Augmentation rhinoplasty with the closed tech...
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