A fastening fixture of a simple and compact structure comprising: a fixture body; a screw having a stem portion inserted into the fixture body; and a fastening nut screwed on the stem portion of the screw. For the inner loop, SNR estimates are obtained for each data stream based on received pilot symbols andor received data symbols. A second flexible substrate is connected to the second mounting terminal and arranged to be superimposed on the first flexible substrate. The snapsheet mode associates each still image with a portion of the shot time of the overall animation corresponding with the selected entity’s influence in the animation. The device includes a 3-axis magnetic field sensor and a 3-axis gravitational field sensor that operate with a processor and an electronic database to perform the required calculations. The present invention also provides compositions and methods for treating hyperphosphatemia based on phosphate-binding chitosan.