利用人工神经网络的方法，建立城市水资源社会再生能力评价模型。

An evaluation model of water resources social renewable capacity is developed based on artificial neural network.

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目的了解拜阿蒙（BAM）骨诱导人工骨通过引导牙周骨组织再生术治疗重度牙周炎患牙的临床疗效。

Objective To observe clinic curative effect on treating serious periodontitis with BAM artificial bone by periodontal guided bone regeneration(PGBR) technique in one year.

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目的观察人工合成组织再生膜修复动物牙周骨缺损的组织学变化及临床疗效。

Objective To study the histological change in rabbits and clinical effect by using artificial membrane to repair the periodontal defect bone tissue.

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