(2+1) resonan multiphoton ionization of photolytically produced CH radical yields previously unobserved bands arising from two-photon transition to Rydberg states. Analysing of the spectrum of CH+, three new states ar...(2+1) resonan multiphoton ionization of photolytically produced CH radical yields previously unobserved bands arising from two-photon transition to Rydberg states. Analysing of the spectrum of CH+, three new states are identified. They are 8 d, 9 d and 10 d Rydberg states, respectively.展开更多
目的研究自发性低颅压综合征(SIH)的临床、脑脊液及影像学特点。方法回顾性分析14例SIH住院病例,观察其临床表现、脑脊液压力、常规生化指标及头颅影像学特点。结果所有病例均有特征性的直立性头痛,多数患者以额颞部头痛为主,伴随有恶...目的研究自发性低颅压综合征(SIH)的临床、脑脊液及影像学特点。方法回顾性分析14例SIH住院病例,观察其临床表现、脑脊液压力、常规生化指标及头颅影像学特点。结果所有病例均有特征性的直立性头痛,多数患者以额颞部头痛为主,伴随有恶心、耳鸣、听力下降等症状,可出现脑神经受累及脑膜刺激征,腰穿结果颅内压均低于70 mm H2O(1 cm H2O=0.098 kPa),脑脊液均有不同程度的细胞数和蛋白增高。头颅磁共振成像(MRI)加强扫描均有广泛脑膜强化。结论了解SIH临床、脑脊液及影像学特点至关重要,头颅MRI加强扫描是SIH检出的有效检查手段。展开更多
文摘(2+1) resonan multiphoton ionization of photolytically produced CH radical yields previously unobserved bands arising from two-photon transition to Rydberg states. Analysing of the spectrum of CH+, three new states are identified. They are 8 d, 9 d and 10 d Rydberg states, respectively.
文摘目的研究自发性低颅压综合征(SIH)的临床、脑脊液及影像学特点。方法回顾性分析14例SIH住院病例,观察其临床表现、脑脊液压力、常规生化指标及头颅影像学特点。结果所有病例均有特征性的直立性头痛,多数患者以额颞部头痛为主,伴随有恶心、耳鸣、听力下降等症状,可出现脑神经受累及脑膜刺激征,腰穿结果颅内压均低于70 mm H2O(1 cm H2O=0.098 kPa),脑脊液均有不同程度的细胞数和蛋白增高。头颅磁共振成像(MRI)加强扫描均有广泛脑膜强化。结论了解SIH临床、脑脊液及影像学特点至关重要,头颅MRI加强扫描是SIH检出的有效检查手段。