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If every one of the n is to be convertible directly to every other , then n2 conversions are needed instead , constituting a much greater problem . Decreases in gln / glu stimulated N2 fixation . The target rotated on a platform in a vacuum chamber filled with 1 Torr N2 and nanoparticles collected on a stainless steel collector ( see Figure 1 ) . Assume that machine N1_C wins on subnet 1 , N2_B wins on subnet 2 , and N3_D wins on subnet 3 - these machines are known as local master browsers for their particular subnet . Then if H is an equipartition for ~ then n2 2n , i.e. n 4 . However , as the proton-induced N2 and OI emissions depend most strongly on the total proton energy flux , reasonable estimates of < Ep can be used in the calculation of proton energy input .