Water soluble hydroxypropyl � � cyclodextrin was converted to acetonyl hydroxypropyl � � cyclodextrin via selective oxidation.通过选择性氧化,将水溶性优良的羟丙基β环糊精转化为丙酮基羟丙基β环糊精....
External ethmoidectomy is a method of choice for malignant lesions.恶性肿瘤以手术加放疗治疗,鼻外筛窦径路是治疗此类恶性肿瘤的优选术式.Objective To evaluate the effect of ethmoidectomy for the treatment of optic neuritis under nasal endoscope.目的评价鼻内窥镜下筛窦...