This study evaluated the influence of the surface treatments of fiberglass posts on bond strength to root dentin using push-out test. Forty bovine incisor roots were endodontically treated. The surface of the fiberglass posts (Exacto #2, Angelus) were treated using 4 different protocols (n=10): Control - 70% ethanol for 1 min; 37% phosphoric acid for 1 min; 10% hydrofluoric acid for 1 min; and ...

Canzoneri, Cumby, and Diba have written a very good paper on the relationship between fiscal and monetary policy. It is informative, clear, and persuasive. As the title indicates, the analysis deals exclusively with the cases of the United States and the European Union (EU). In a way, however, these are the countries where the discussion on the connection between fiscal and monetary policy is l...

It is desirable to obtain materials that have high vibration damping while maintaining other structural properties. Aerospace quality composite materials typically have greater strength and stiffness to weight ratios than most metals, while providing increased damping. However, their passive damping capacities are not enough for some applications. Fiber reinforced elastomers (FRE) or elastomer ...

The aim of this study was to evaluate the biomechanical behavior and long-term safety of high performance polymer PEKK as an intraradicular dental post-core material through comparative finite element analysis (FEA) with other conventional post-core materials. A 3D FEA model of a maxillary central incisor was constructed. A cyclic loading force of 50 N was applied at an angle of 45° to the long...

N europathic plantar ulcers are classical lesions secondary to diabetic polyneuropathy (1,2). The worldwide gold standard treatment is the nonremovable off-loading cast (3–5). However, the device is not widely used due to concerns related to risk factors of the off-loading cast (i.e., joint rigidity, additional ulcer formation beneath the cast, and infection of the ulcer enclosed in the cast). ...

Analysis of seedling growth characteristics between two greenhouse cover types, old fiberglass and new polycarbonate, shows significant differences in height and sturdiness coefficients in ponderosa pine (Pinus ponderosa) seedlings. Three rates of nitrogen (N) application (20, 40, and 60 mg) indicate that seedling growth will increase under both cover types, but may cause a reduction in seedlin...

Abstract: This paper presents the results of experimental determination of fiber bed permeability variation with porosity. Flow measurement experiments were designed to measure fiber mat permeability for fiber beds with various fiber volume fractions. Woven fiberglass, chopped fiberglass, and carbon fiber mats were used as reinforcements. The effects of reinforcement type and porosity on fiber ...

PURPOSE Recent literature comparing the effectiveness of above-elbow and below-elbow plaster casts appears to suggest that either cast type offers adequate immobilization for distal radius and ulna fractures. The idea that an appropriate mold placed on the cast is the most significant determinant of successful immobilization and, thereby, patient outcome has also been elucidated. The purpose of...

Blended interaction often is about blending the physical with the digital. In contrast to common discussions of blending that focus on the commonality of the input domains we focus on the unique features of interacting with physical and digital artifacts. We propose PIBADIBA lists (Physical Is Better At – Digital Is Better At) that capture the strengths of using the physical and digital realms ...