We propose an algorithm for building 3D models of the airway tree from Computed Tomographic (CT) images. Our procedure first computes a set of core points that tend to concentrate along the centerlines of the airway tree branches. This point set, after a filtering step, is used to build a set of wall points that concentrate on the walls of the airways. Finally, a triangulated surface is build f...

In this paper we show how tools provided by a text engineering framework (GATE) have been used to build an IE-based summarisation system in the domain of occupational health and safety. The core of the application is based on pattern-action grammar rules, which can easily be extended or ported to new domains. The GATE framework was also used to evaluate automatically the system’s performance. U...

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Dentists often place post and core buildups on endodontically treated abutments for crown and bridge restorations. This article analyzes the bio-mechanical purposes, advantages and disadvantages of placing a core or a post and core in an endodontically treated tooth and reviews literature on post and core biomechanics. The author assesses the scientific rationale of the claim that the main purp...

We have developed a new direct construction method for core build-up starting with the hypothesis that an improvement in pullout strength and a decrease in the number of voids in the restorative material will become possible by filling a hollow fiber reinforced post with the restorative material from the bottom of the root canal. For the pullout test, the hollow post was fixed to the head of a ...

Using iterative lithiation-borylation homologations, the mycolactone toxin core has been synthesized in 13 steps and 17% overall yield. The rapid build-up of molecular complexity, high convergence and high stereoselectivity are noteworthy features of this synthesis.

Three desmoglein isoforms collaborate with desmocollins to build the adhesive core of desmosomes. A recent study has shown that altering the ratio of desmoglein isoforms influences epidermal barrier function, suggesting distinct roles for these cadherins that extend beyond adhesion.

ÖZET Aim: The purpose of this laboratory investigation was to evaluate the bond strength of temporary cement [(Provicem, Procem (eugenol-free), Tempbond (eugenol)] to commonly used core build-up materials. [Composite resin (President), Compomer (Dyract AP), glass-ionomer cement (Ionofil), resin modified glassionomer cement (Vitremer) (RMGIC)]. Materials and Methods: Sixty specimens were fabrica...