One of the problems in using grating sensors is how to measure a small Bragg wavelength shift accurately. Nowadays demodulation techniques are mainly based on t
干粉吸入剂(Dry Power Inhalation,DPI)将微米级药物颗粒封装于胶囊,借助特殊装置将药物直接给入肺部,而多单元缓释制剂(Multiple-Unit Sustained-Release,MUSR)将具有缓释性能的微丸填充于胶囊或压缩成片剂。由此,干粉吸入剂及多单元缓释制剂均由众多含药微粒组成,在本研究中统称为微粒制剂。对于肺部给药的干粉吸入剂,药物的治疗效果不仅与靶点的药物浓度直