Genetic Analysis of Avian Influenza Virus from Wild Birds and Mallards Reared for Shooting in Denmark

This paper reports complementary experimental and theoretical investigations focussed on the laser milling of theamorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5, also known as Vitreloy 1, in ambient air, using 220 ns pulses. Theconducted experiments showed that the formation of crystalline precipitates required a relatively large overlapbetween pulses when machining with a fluence of 6 J/cm2 and a pulse repetition frequency of 250 KHz. The loss ofthe fully amorphous nature of this material could also be achieved for a substantially smaller pulse overlap andfrequency. In this case, the lower thermal load associated with the reduction in the value of these parameters wasbalanced by increasing the delivered fluence by one order of magnitude, i.e. 70 J/cm2. Using theoretical temperatureprofiles associated with the considered laser milling operations, it was suggested that different crystallisationphenomena could be at play between both levels of fluence values utilised