June 25, 2005, Denver, Colorado, USA: ASHRAE President Ron Vallort (right) presents a 2004 Technical Symposium Paper Award to Dr. Arno Laesecke for his paper Viscosity Measurements and Model Comparisons for the Refrigerant Blends R-410A and R-507A published in ASHRAE Trans. Res., 110(2004), part 2, 1-19.