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The Islamic Revolution of Iran is a turning point in modern history-an uprising born from the faith, determination, and will of the people, opening a new chapter of awareness and dignity. This revolution was not merely a political shift; it was the revival of the identity, honor, and independence of a nation that had long dreamed of freedom. Amid the cries of those seeking liberty, a new hope emerged-one that continues to inspire future generations, a hope for a world where values, justice, and spirituality are never forgotten. The Islamic Revolution reminds us that no power is greater than...

This thesis deals with the effects of ZnCl2 and ZnO nanoparticles (ZnO NPs) on Pseudokirchneriella subcapitata (as a single species toxicity test) and aquatic microbial communities (as a community-level toxicity test). The effects of metal ions like Zn2+ on different organisms can be highly variable and there are some studies about the side effects of this metal ion on species occurring in aquatic microbial communities like bacteria, algae and diatoms; however, the effects of metal ions on single species is probably not enough accurate to base risk assessment decisions on. In order to obtain...