2+ day, 7+ hour ago  (367+ words) Professor Keyvan Sadeghi of the Department of Mechanical Engineering at the University of Tehran has successfully developed a disposable medical diagnostic kit that uses a microfluidic, paper-based fuel cell instead of conventional lithium batteries. Supported by the Iran National Science…...

3+ day, 4+ hour ago  (249+ words) In recent years, plastic recycling has evolved from a purely technical concern into an economic and environmental imperative. Among common plastics, polystyrene (PS)widely used in food packaging and consumer productsposes a particular challenge due to its chemically stable structure,…...