“斯密型增长”还是“熊彼特型增长”——区域结构视角的我国经济增长模式分析

对我国经济增长主要依赖要素投入增加还是技术进步,国内外学术界尚未取得一致结论。鉴于我国区域经济发展差距巨大,对2000~2010年省际经济增长数据进行Malmquist指数分解和聚类分析,结果表明：近年来我国经济增长效率存在着显著的区域差异,且不存在某种占据主导地位的模式;空间布局上基本呈现出东部地区在效率方面优于西部、西部又优于中部的特征。因此,笼统地讨论我国经济的增长模式缺乏内在逻辑一致性,而要实现经济增长方式的转变,则必须分区域实施针对性战略,同时强化市场制度建设以提高全国市场的统一程度。

A New Method of Preparing Alkanethiol-Protected Gold Nanoparticals

In a new two-phase system (tetrahydrofuran/saturated NaCl aqueous solution) monolayer protected clusters (MPCs) were prepared.The AuCl- 4 anion in saturated electrolyte aqueous solution was transferred into the organic phase of tetrahydrofuran by tetra-n-butylammonium bromide ((C 4H 9) 4NBr) and was reduced quickly by sodium borohydride in the presence of alkanethiol.The functionalized MPCs were characterized by solubility,transmission electron microscopy (TEM),Fourier transform infrared spectroscopy (FTIR),energy-dispersive X-ray (EDX) analysis and UV-vis spectroscopy.Electrochemical measurements of MPCs in CH 2Cl 2 exhibited 7 pairs of reversible voltammetric waves within the potential range of -1.0 to 1.0V (vs Ag/AgCl),which was ascribed to the quantized capacitance charging of nanoparticle double layers.All the results show that the new preparing method is feasible.