Pnin is the third works Nabokov creats in English in America, and also it is the first works causing widespread attention in American readers.

Beginning with his research on butterflies,the present paper traces the origin of Nabokov’s views on details;based on an analysis of his later novels Pnin and Transparent Things,the paper moves on to explore how Nabokov puts his idea into practice through detailed description and coincidences.

An Interpretation of Pnin from Freud′s Personality Theory

Determination of related substances of Tiopronin tablets with HPLC;

Studies on Synthetic Process of Tiopronin;

Determination of release of Tiopronin enterin-coated capsules with HPLC;