光导纤维光谱技术无损鉴定彩绘文物颜料的研究

为了克服传统的有损文物分析技术对文物造成的破坏,研制出一种简易光导纤维反射光谱仪。建立了光导纤维反射光谱技术对颜料分析鉴定的基本方法,提供了一种简捷的文物颜料无损分析鉴定的新技术。通过对西安、重庆等地彩绘文物颜料成分的鉴定,表明光导纤维反射光谱法测量结果准确、可靠,在文物颜料鉴定等方面具有广阔的应用前景。     

Delivering Microfinance in Developing Countries: Controversies and Policy Perspectives

The article reviews three major controversies in the microfinance field: vehicles, technologies, and performance assessments for financial service delivery. Then it proposes that these controversies be resolved by a perspective emphasizing institutional plurality and external and internal efficiencies for individual programs. Questions for further research are discussed in the conclusion.     

Incentives for the Iranian Chemical Boom: A Strategic Motivation or Applied Needs?

Iran's scientific impact has suffered hard from decades of imposed and self‐elected isolation from Western influences and international collaboration. Lately, however, the world has witnessed a remarkable increase in scientific publications from Iranian scientists in fields like nanotechnology; material science; and, perhaps most pronounced, chemistry. In this article, the factors behind this “publication boom” are discussed and examined together with an analysis of the coherence between the country's long‐term research strategies and short‐term needs in relation to present organic chemical research conducted at various Iranian universities and institutes. Organic chemistry is a keystone in important Iranian industrial sectors like the petroleum and agricultural industries, and also in the growing field of life science and pharmacology. The development of the petroleum industry and further refinement of raw oil into value‐added fine chemicals holds a key position in the reinforcement of the Iranian economy and labor market, thus motivating a governmental investment in chemical science and research. Taking an approach to find a reasonable balance with the impact from Western and Far Eastern scientific communities, Iran's own scientific roots and Islamic ideology could well be the success factor in becoming a worthy player on the international scientific arena.     

重评共产国际指导中国大革命的路线

中国大革命是在联共政治局和共产国际直接指导下进行的。在此期间 ,联共政治局会议专门讨论中国革命问题 1 2 2次 ,做出了 73 8个决定。指导中国大革命的基本路线和方针、政策 ,几乎全部来自莫斯科 ,并且由莫斯科派驻中国的代表、顾问亲自执行 ;只有一小部分是在他们的代表严密监督下由陈独秀为首的中共中央执行。 1 92 3— 1 92 5年 ,莫斯科提出的路线基本上是正确的 ;1 92 5年秋开始发生右倾化的转变 ,最后导致了大革命的失败。