immigration i s a n important subject which h as always attracted the attention of critics and authors . tahar ben - j e l l ou n , t h e french author , i s o ne such instance . h is opinion is exceptiona l . with downcast eyes i s a masterpiece by this author . i n this masterpiece , h e displays the problems o f a n african girl in two parts ( before and after immigration ) . the setting of ...

This work aims to study the effect of a nucleating agent on cement hydration. Firstly, C-S-H crystal nucleation early strength (CNA) is prepared. Then, effects CNA hydration mechanism, enhancement effect, content, 28-days degree and fractal dimension products are studied by kinetics calculation, resistivity test, BET specific surface area test quantitative analysis backscattered electron (BSE) ...