盆腔器官脱垂(pelvic organ prolapse,POP)指盆腔器官脱出于阴道内或阴道外。2001年美国国立卫生研究院(National Institues of Health,NIH)提出:POP指任何阴道节段的前缘达到或超过处女膜缘外1cm以上。可单独发生,但一般情况下是联合发...盆腔器官脱垂(pelvic organ prolapse,POP)指盆腔器官脱出于阴道内或阴道外。2001年美国国立卫生研究院(National Institues of Health,NIH)提出:POP指任何阴道节段的前缘达到或超过处女膜缘外1cm以上。可单独发生,但一般情况下是联合发生^([1])。据报道,POP是一类影响50%以上中老年女性的世界性疾病。据联合国世界人口老龄化数据显示,在未来30年由于盆底功能障碍而寻求治疗的人口将增加45%^([2])。展开更多
Iron oxide particles with various shapes,sizes and phase concentrations(including--Fe2O3 and Fe3O4) have been synthesized through a simple hydrothermal method in the ethylene glycol(EG)-water system.In the preparation...Iron oxide particles with various shapes,sizes and phase concentrations(including--Fe2O3 and Fe3O4) have been synthesized through a simple hydrothermal method in the ethylene glycol(EG)-water system.In the preparation conditions,ferric chloride(FeCl3.6H2O) was used as the iron source in the presence of sodium hydroxide(NaOH) without any surfactants.By adjusting the experimental parameters(EG/H2O ratio,base content,iron ions concentration,etc.),the shape,the size,the phase and the magnetic property of the products could be easily controlled.The products were characterized by using X-ray diffraction(XRD),scanning electron microscopy(SEM),and a vibrating sample magnetometer(VSM).A further investigation revealed that high EG content and high alkaline condition favored the formation of Fe3O4 phase.A possible growth mechanism was proposed based on the experimental results.The magnetic properties were deeply affected by the morphology and phase of the as-synthesized products.The controlled shape,size and phase structure of the iron oxides through simple synthetic procedures provides potential opportunities to realize the promising size and shape-dependent applications.展开更多
文摘盆腔器官脱垂(pelvic organ prolapse,POP)指盆腔器官脱出于阴道内或阴道外。2001年美国国立卫生研究院(National Institues of Health,NIH)提出:POP指任何阴道节段的前缘达到或超过处女膜缘外1cm以上。可单独发生,但一般情况下是联合发生^([1])。据报道,POP是一类影响50%以上中老年女性的世界性疾病。据联合国世界人口老龄化数据显示,在未来30年由于盆底功能障碍而寻求治疗的人口将增加45%^([2])。
基金supported by the National Natural Science Foundation of China (Grant Nos. 50832003 and 50972073)
文摘Iron oxide particles with various shapes,sizes and phase concentrations(including--Fe2O3 and Fe3O4) have been synthesized through a simple hydrothermal method in the ethylene glycol(EG)-water system.In the preparation conditions,ferric chloride(FeCl3.6H2O) was used as the iron source in the presence of sodium hydroxide(NaOH) without any surfactants.By adjusting the experimental parameters(EG/H2O ratio,base content,iron ions concentration,etc.),the shape,the size,the phase and the magnetic property of the products could be easily controlled.The products were characterized by using X-ray diffraction(XRD),scanning electron microscopy(SEM),and a vibrating sample magnetometer(VSM).A further investigation revealed that high EG content and high alkaline condition favored the formation of Fe3O4 phase.A possible growth mechanism was proposed based on the experimental results.The magnetic properties were deeply affected by the morphology and phase of the as-synthesized products.The controlled shape,size and phase structure of the iron oxides through simple synthetic procedures provides potential opportunities to realize the promising size and shape-dependent applications.
