A silica glass crucible includes a thin barium-doped inner layer, a stable, bubble-free intermediate layer, and a stable opaque outer layer. A plurality of chips which each include: at least one pad formed on a wafer; and a metal layer which protrudes up to a predetermined thickness from the bottom of the wafer and is formed in a via hole exposing the bottom of the pad are stacked such that the pad and the metal layer of adjacent chips are bonded. The apparatus is suitable for low-cost manufacture, offers simple robust operation suitable for underdeveloped regions of the world, may be fabricated from commonly-available components, requires few moving parts and no valuable components other than a generator, and is self-flushing for low maintenance operation. The leading edge of the banner is attached to the crossbar, which is wider than the width of the banner. Since the magnetic field of the second section is weakened, a beam strike neck distance is improved, and a deflection sensitivity is improved. Medicinal products containing the same which are useful in the treatment of diseases or pathological conditions in which endothelial dysfunction is known.