2641638 ELBE entropic lattice Boltzmann equation 3 2641642 ELBE E. latissima stem bark extracts 1 2641641 ELBE ELectron accelerator ofhigh Brilliance and low Emittance 1 2641639 ELBE Electron Linac for beams with high Brilliance and low Emittance 1 2641640 ELBE expected loss best estimate 1