Migration of implanon: two case reports.

These two case reports describe migration of Implanon (the single-rod contraceptive implant). A review of the literature revealed true migration of Implanon to be rare. A change of practice locally is described.

Photochemical Reactivity of W(CO)(4)(phen): Evidence for Prompt One-Electron Transfer in Competition with Vibrational Relaxation.

Excitation into either the metal-to-ligand charge-transfer, MLCT, band or the ligand field, LF, band of W(CO)(4)(phen) promoted an electron transfer to paraquat, PQ(2+). This process was observed spectroscopically by the appearance of the characteristic bands of the well-known radical cation PQ(*)(+). Both nanosecond and picosecond flash photolysis were used to further examine the electron-transfer reaction.