An apparatus for sensing one or more physical characteristics of a fluid flowing in a fluid line, in one embodiment having an isolator block mounted onto a fluid line and in another embodiment, having an adapter plate coupled with isolator plate mounted onto a fluid line. The apparatus generates nitrate ions and brings the nitrate ions into contact with an aqueous system. The magnetic field configuration in a sputter apparatus is modulated during a pasting process. The individual is administered an inactivated diffusion-enhancing molecule that becomes associated with the membrane, which is then precisely exposed to an activating energy source, such as light or ultrasound. With the present retainer system, the notch will effectively stop the peel or withdrawal of the belt from the retaining channel at a predetermined location along the channel. The input pixel grid comprises a plurality of pixels representing an original image, and the transformation may implement the simultaneous scaling and rotation of the input pixel grid.