BACKGROUND The objective of this multicenter, randomized trial was to compare enamel matrix derivative (EMD; test) with barrier membranes (control) for the treatment of mandibular buccal Class II furcation defects. METHODS Forty-five patients with 90 comparable defects on contralateral molars were included. Defects were randomly assigned to EMD or bioabsorbable barrier membrane; the contralat...

Using conformal field theory, we derive several new crossing formulae at the two-dimensional percolation point. High-precision simulation confirms these results. Integrating them gives a unified derivation of Cardy’s formula for the horizontal crossing probability h(r), Watts’ formula for the horizontal– vertical crossing probability hv(r) and Cardy’s formula for the expected number of clusters...

This paper presents an investigation of active damping of the vertical and horizontal transverse modes of a rigidly-terminated vibrating string. A state-space model that emulates the behavior of the string is introduced, and we explain the theory behind band pass filter control and proportional-integral-derivative (PID) control as applied to a vibrating string. After describing the characterist...

We consider solutions of Lagrangian variational problems with linear constraints on the derivative. These solutions are given by curves γ in a differentiable manifold M that are everywhere tangent to a smooth distribution D on M ; such curves are called horizontal. We study the manifold structure of the set ΩP,Q(M,D) of horizontal curves that join two submanifolds P and Q of M . We consider an ...

The use of two to four magnetometers in airborne magnetic surveys is becoming more frequent, allowing for the observation of the total-field as well as its horizontal gradients (Redford, et al., 2006). There are advantages to these data types because of the increased and complementary information content in them. Yet little has been done to take full advantage of these data beyond simple enhanc...

The main scope of this research is to detect geologic structure trends affecting the study area, determine uranium anomalous areas and define alteration zones. Airborne magnetic data were used area through applying edge detectors such as total horizontal derivative, analytic signal tilt derivative. radio-spectrometry Landsat image in determining integration between geology, was applied construc...

Most of the classical mathematical methods for edge detection based on the derivative of the pixels of the original image are Gradient operators, Laplacian and Laplacian of Gaussian operators. Gradient based edge detection methods, such as Roberts, Sobel and Prewitts, have used two 2-D linear filters to process vertical edges and horizontal edges separately to approximate first-order derivative...