Energy relations in the case of impact action on a rod

Time changes are analyzed of internal energy of a uniform free rod of constant cross section which is loaded at one end by an arbitrary time-variable force.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 96–101, July, 1972.     

Synthesis and mass spectra of some phosphadipeptides

Conclusions The mass-spectrometric fragmentation of several phosphadipeptides has been investigated. The mass spectra show peaks which are unequivocally related to the sequence of amino acid residues in the molecule, as well as peaks which correspond to the C-terminal amino acids. These peaks can be utilized for the massspectrometric identification of metabolites of the compounds studied.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1138–1144, May, 1978.     

Copper and iron interactions with angiotensin-converting enzyme inhibitors. A study by fast-atom bombardment tandem mass spectrometry

Fast atom bombardment, combined with high-energy collision-induced tandem mass spectrometry, has been used to investigate gas-phase metal-ion interactions with captopril, enalaprilat and lisinopril, all angiotensin-converting enzyme inhibitors.Suggestions for the location of metal-binding sites are presented. For captopril, metal binding occurs most likely at both the sulphur and the nitrogen atom. For enalaprilat and lisinopril, binding preferably occurs at the amine nitrogen. Copyright 1999 John Wiley & Sons, Ltd.