Virginia Tech researcher Pavlos Vlachos and his students in the College of Engineering have a tall order to tackle: Stem the grim progression of heart disease, which kills hundreds of thousands of people each year in the United States alone. Vlachos, an associate professor of mechanical engineering and director of the Advanced Experimental Thermofluid Engineering Research Laboratory, is waging this fight with what he calls his four children. That's not a condescending term for his researchers, but a parental pride in the series of cardiac-related projects he's working on... 
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