The Current Situation and Protection Measures of Amphibians and Reptiles Diversity of Huaihe River basin in Anhui

经过调查统计,发现淮河流域(安徽段)现有两栖动物11种,其中古北界2种,东洋界5种,广布种4种;爬行动物23种,属于古北界4种,东洋界13种,广布种6种。区系特点明显,属于古北界向东洋界的过渡区,东洋界和广布种种类分布相对丰富。相似系数分析表明沱湖和女山湖相似系数最高,说明其生境和其他两个保护区相比更为优越。此研究有助于了解该地区两栖爬行动物的多样性现状,为进一步加强资源的保护和可持续利用提供参考。The amphibians and reptiles diversity of Huaihe River basin in Anhui has been investigated and studied.The result indicates that 11 amphibian species have been found,2 of them are pale arctic realm,5 oriental species and 4 widespread species.23 reptile species have been found,4 of them are pale arctic realm,13 oriental species and 6 widespread species.The fauna feature was obvious.The pale arctic species are seldom,the oriental species and the widespread species are rich.Analysis indicates that the similar coefficient of Tuohu and Nvsanhu are the highest.The conclusion is that the diversity of amphibians and reptiles in this area can be illustrated;the environment and wildlife resources can be utilized reasonably after more protection.安徽科技学院重点学科建设基金项目(YZD2004-19)资

一种新型的通用的SERS基底-核壳结构纳米子

为了进一步来提高SERS基底和分子的普适性,本文采取了一种"借力"的方法,设计合成了金核过渡金属薄壳(Au@Pd,Au@Pt,Au@Ni,Au@Co)的核壳结构纳米粒子,借用底层高SERS活性的金核强的电磁场来增强过渡金属表面吸附分子的SERS信号,使得过渡金属表面的增强因子可达104-105。系统地开展了不同壳层厚度及相同壳层厚度下金核大小对SERS活性影响的研究,发现随着壳层厚的增加SERS活性迅速衰减,而且当金核为120-140 nm时可以得到最强的增强