3 documents found, page 1 of 1
Diffusion of muonic hydrogen in hydrogen gas and the measurement of the 1s hype...
Nuber, Jonas; Adamczak, A.; Abdou Ahmed, M.; Affolter, L.; Amaro, F. D.; Amaro, Pedro; Antognini, A.; Carvalho, P.; Chang, Y. -H.; Chen, T. -L.The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (μp) with 1 ppm accuracy by means of pulsed laser spectroscopy. In the proposed experiment, the μp atom is excited by a laser pulse from the singlet to the triplet hyperfine sub-levels, and is quenched back to the singlet state by an inelastic collision with a H2 molecule. The resulting increase of...
Diversity of bacterial biosynthetic genes in maritime antarctica
Rego, A.; Sousa, A.G.G.; Santos, J.P.; Pascoal, F.; Canário, J.; Leão, P.N.; Magalhães, C.Bacterial natural products (NPs) are still a major source of new drug leads. Polyketides (PKs) and non-ribosomal peptides (NRP) are two pharmaceutically important families of NPs and recent studies have revealed Antarctica to harbor endemic polyketide synthase (PKS) and non-ribosomal peptide synthetase (NRPS) genes, likely to be involved in the production of novel metabolites. Despite this, the diversity of sec...
Quantitative determinations and imaging in different structures of buried human...
Guimarães, D.; Dias, A. A.; Carvalho, M.; Carvalho, M. L.; Santos, J.P.; Henriques, F. R.; Curate, F.; Pessanha, S.