The occurrence of three glutamate agonists â€” glutamic acid, D-homocysteic acid and kainic acid â€” in a spontaneous mutant of Palmaria palmata is reported. Glutamic acid and D-homocysteic acid, but notâ€¦ (More)

We present a definition of the four-dimensional helicity (FDH) regularization scheme valid for two or more loops. This scheme was previously defined and utilized at one loop. It amounts to aâ€¦ (More)

We present the two-loop helicity amplitudes for the scattering of two gluons into two gluons in QCD, which are relevant for next-to-next-to-leading order corrections to jet production at hadronâ€¦ (More)

Three loop ladder and V-topology diagrams contributing to the massive operator matrix element AQg are calculated. The corresponding objects can all be expressed in terms of nested sums andâ€¦ (More)

The logarithmic and constant contributions to the Wilson coefficient of the longitudinal heavy quark structure function to O(Î±s) are calculated using mass factorization techniques in Mellin space.â€¦ (More)

We outline a new algorithm to solve coupled systems of differential equations in one continuous variable x (resp. coupled difference equations in one discrete variable N) depending on a smallâ€¦ (More)

We present algorithms to solve coupled systems of linear differential equations, arising in the calculation of massive Feynman diagrams with local operator insertions at 3-loop order, which do notâ€¦ (More)

In the present study we propose a standardization of the method for the induction of fibrosis of the liver in rats by weekly administration of CCl4 by the intragastric route. The present method is aâ€¦ (More)