The present invention is thus directed to methods and apparatus for decreasing pressure in a first portion of a vessel of the cardiac structure of a patient by implanting a shunt communicating with an area outside said first portion, whereby a volume of blood sufficient to reduce pressure in said first portion is released. A database of property profiles is created an accessed using an web-based interface from a computing device such as a laptop, smart phone or tablet. The polarization rotation unit rotates the polarization of the light signal to produce a polarization rotated light signal having a polarization component in the first direction and a polarization component in a second direction which is substantially 90 degrees with respect to the first direction. The method comprises the steps of:. Relative rotation of the first arm and the second arm in an opposite direction tightens the spring around the mandrel. Soy milk products can be produced by this method simply and conveniently.