Objective: Corrosion resistance is among the most important properties of metal alloys used in the oral cavity. Consumption of acidic foods reduces the salivary pH and intensifies the corrosion of brackets and orthodontic wires. This study aimed to compare electro galvanic corrosion of different orthodontic brackets and wires and determine the amount of ions released into acidic artifici...

We show that for the Kauffman bracket skein module over the field of rational functions in variable A, the module of a connected sum of 3-manifolds is the tensor product of modules of the individual manifolds.

Considering the scattering of massless open strings attached to a D-string living in the B field background, we show that corresponding scattering upto the order of α ′2 is exactly given by the gauge theory on noncommutative background, which is characterized by the Moyal bracket. 1 Introduction After the novel work of Witten [1], it was realized that the low energy dynamics of open

Nijenhuis tensors N on Courant algebroids compatible with the pairing are studied. This compatibility condition turns out to be of the form N + N = λI for irreducible Courant algebroids, in particular for the extended tangent bundles T M = TM ⊕ TM . It is proved that compatible Nijenhuis tensors on irreducible Courant algebroids must satisfy quadratic relations N −λN + γI = 0, so that the corre...

The 20-item Somatoform Dissociation Questionnaire (SDQ-20; Nijenhuis, Spinhoven, Van Dyck, Van der Hart, & Vanderlinden, 1996) evaluates the severity of somatoform dissociation. The SDQ-20 items were derived from a pool of 75 items describing clinically observed somatoform dissociative symptoms that in clinical settings had appeared upon reactivation of particular dissociative parts of the pers...

Considering the scattering of massless open strings attached to a D2-brane living in the B field background, we show that corresponding scattering upto the order of α ′2 is exactly given by the gauge theory on noncommutative background, which is characterized by the Moyal bracket. 1 Introduction After the novel work of Witten [1], it was realized that the low energy dynamics of open

A covariant formalism for Moyal deformations of gauge theory and differential equations which determine Seiberg-Witten maps is presented. Replacing the ordinary product of functions by the noncommutative Moyal product, noncommutative versions of integrable models can be constructed. We explore how a Seiberg-Witten map acts in such a framework. As a specific example, we consider a noncommutative...