摘要:
A method for preparing an acetazolamide microparticle having a mean particle size ranged between 0.36 μm and 18 μm is provided. The method includes steps of dissolving an acetazolamide in a solvent to form an acetazolamide solution; and mixing the acetazolamide solution with a supercritical fluid at a temperature and a pressure above a critical point of the supercritical fluid for forming the acetazolamide microparticle, wherein the solvent is miscible with the supercritical fluid.
摘要:
A green diode laser includes a tubular laser casing, a heat sink sealedly mounted at the laser casing, a semiconductor chip supported by the heat sink, an optical resonant cavity supported within the laser casing, including a lasing medium and an intracavity frequency doubler, an IR blocking filter inclinedly and seadedly mounted at the laser casing to optically communicate with an output facet, and a photodiode supported within the laser casing at a position that when the laser beam exits the output facet, the IR blocking filter reflects a portion of the laser beam towards the photodiode such that the photodiode is adapted for detecting the laser beam from the IR blocking filter as a feedback for controlling a power output of the green laser chip.
摘要:
A method for preparing a tolbutamide particle is provided. The method comprises steps of mixing a bulk drug of tolbutamide with a supercritical fluid to form a supercritical mixture; and expanding the supercritical mixture to obtain the tolbutamide particle.
摘要:
A green diode laser includes a tubular laser casing, a heat sink sealedly mounted at the laser casing, a semiconductor chip supported by the heat sink, an optical resonant cavity supported within the laser casing, including a lasing medium and an intracavity frequency doubler, an IR blocking filter inclinedly and seadedly mounted at the laser casing to optically communicate with an output facet, and a photodiode supported within the laser casing at a position that when the laser beam exits the output facet, the IR blocking filter reflects a portion of the laser beam towards the photodiode such that the photodiode is adapted for detecting the laser beam from the IR blocking filter as a feedback for controlling a power output of the green laser chip.