The invention relates to a gas cell adapted for carbon dioxide and including a cavity which is adapted for a chosen gas volume, a light s source and a light-bundle receiving unit. Two elongate pallet members are provided having axially extending openings adapted to receive fork tines from a fork lift. Through the incline control means, the inclined angle of the screen panel may be adjusted to suit users’ viewing requirements. Then, using an operator Md for the display unit, the color components of the specific color thus separated are converted from LMS to XYZ by means of a converter 60g for the display unit. Therefore, it is possible to reduce the optical loss of the optical element in the vacuum ultraviolet region. The pharmaceutical compositions and methods include the use of vincamine or a vincamine derivative, either alone or in combination with one or more additional therapeutic agents, including a steroid, an angiotensin II receptor antagonist, an angiotensin-converting enzyme inhibitor, and a non-steroidal anti-inflammatory drug.