The elderly population characterizes diminution of sleep time, reduction of sleep efficiency, sleep disorder and more hypnotic using, which seems related to cerebral functional deterioration.
老年人以睡眠时间减少、睡眠效率降低、睡眠障碍多、催眠药物使用多为特点，似乎与脑功能退化有关。
2
Results showed that the graphene with characteristics of disorder crystal and large length to thickness was prepared by oxidation reduction.
试验结果表明：将石墨先氧化后还原法制备出的石墨烯具有无序的晶型、长厚比大。
3
Mutation of CPAP induces a neuro-developmental disorder named MCPH (autosomal recessive primary microcephaly) that causes a great reduction in brain growth in human.