Methods: This descriptive cross-sectional study evaluated the anatomical characteristics of the cerebellar arteries and their branches in 93 brain stem and cerebellum blocks obtained from fresh cadavers. The specimens were perfused bilaterally channeling the proximal segments of the internal carotid and vertebral arteries with a semi-synthetic resin (Palatal GP40L 85%; styrene 15%) impregnated ...

ion Ezchunye Resins-De-Acidite (The Permutit Company, New York), washed on a 40 mesh screen with distilled water, was treated several times with aqueous 4 per cent sodium carbonate and repeatedly washed with distilled water, by suspension and decantation, until the supernatant liquid was colorless and had a pH of 8.0 or less. The resin collected on a suction filter contained 70 to 80 per cent w...

PURPOSE This study compared the influence of two luting cements on the clinical performance of single crowns. MATERIALS AND METHODS Twenty patients received 39 pairs of metal-ceramic and Procera crowns cemented with zinc phosphate and resin-modified glass-ionomer luting cement (Vitremer) in a split-mouth randomized pattern blinded to the recipient. The crowns were examined immediately after c...

Abstract Splitting of the effective Rabi frequencies for plasmonic fields when interaction occurs between semiconductor quantum dot and three metallic nanospheres in presence electromagnetic is examined. We study theoretically role dipole–dipole interactions creating many Multipoles. Then, we split into parts according to quantitative Multipoles fields. The density matrix equations are derived ...

How chemical structure changes affect the curing reactions and thermal properties of 2,2 -bis(4-cyanatophenyl) propane (cyanate ester) cured rigid-rod epoxy resins has been studied for biphenol and tetramethyl biphenol epoxies. The formation of an oxazolidinone ring is the dominant curing reaction for biphenol epoxy, whereas the formation of a cyanurate ring is the dominant curing reaction for ...

The TPACK framework describes the kinds of knowledge required by teachers for successful integration technology in teaching. is heart good teaching and needed a teacher effective integration. In this study, such teachers’ development strategies as Learning Design Approach, Lesson Study, Microteaching, microteaching lesson study are analyzed after an analysis process formation its components. ad...

[18F]Fluoride was recovered from [18O]target water in high yield by trapping it on a microcolumn of an anion exchange resin (20 mg Dowex 1 x 8, 400 mesh) and subsequent elution of the column (in the reverse direction) by aqueous carbonic acid at 52 atm. The carbonic acid was removed from the [18F]fluoride solution by brief heating at 85 C, 1 atm. Thus no extraneous electrolyte was introduced by...

The debonding of acrylic resin teeth with the denture base resin has been related to several different factors of which contamination of the bonding surfaces with wax has been suggested as the major cause. The purpose of this study was to determine the efficient method of wax removal from denture teeth using hot water at different temperatures ranges. Acrylic rods were used as tooth analogues a...

A Novel Bioactive Glass-Enhanced Orthodontic Bonding Resin: A shear bond strength study By Cole R. Johnson, D.D.S. A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Dentistry at Virginia Commonwealth University. Virginia Commonwealth University, 2011 Thesis Director: Eser Tüfekçi, D.D.S, M.S., Ph.D Associate Professor, Department of Orthodontic...

Kenaf is a nonwoody fibrous plant, and its fibre can be potentially used as reinforcement in the matrix to produce biocomposite materials. The properties of materials are highly dependent on reinforcing material binder. This study kenaf with different compositions (10, 20, 30 wt.%) lengths (1 cm 3 cm) using casting process. Low viscosity epoxy resin (635 thin resin) 6 poise was matrix. results ...