A necktie button for a necktie provided with a front button part which defines the button shape and a rear part which is able to be joined to the front button part for holding the necktie between these two parts. Fats and oils may be added without collapsing the matrix of egg protein and soy protein isolate. The refractive indices of the filler material and the scattering fibers can be substantially matched for light incident in a first polarization state on the composite polymer fiber and unmatched for light incident in an orthogonal polarization state. As the workpiece is moved under the sensor, selected rows of pixels register the non-uniform light reflected from the workpiece and provide the data to a computer for calculating a surface profile for that row. The invention further relates to compositions comprising bosentan prepared according to the processes of the invention and their use in the treatment of endothelin-receptor mediated disorders. A connector is operably associated with the arms, whereby the arms are able to pivot about the pivot locations in a generally scissors-type movement.