Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Yasuo Shida"'
Publikováno v:
International Journal of Mass Spectrometry. 235:229-241
Liquid ionization mass spectrometry (LPI-MS) gives information about hydrogen-bonded clusters at a liquid surface. By improving the way in which samples are introduced, mass spectra showing clusters at the liquid surface or in a gas phase were obtain
Autor:
Yasuo Shida, Kentaro Yoshimura, Kenzo Hiraoka, Mridul Kanti Mandal, Sen Takeda, Subhrakanti Saha, Hiroshi Nonami
Publikováno v:
The Analyst. 138(6)
We have examined several combinations of solvents and probes with the aim of optimizing the ionization conditions for biomolecules e.g., proteins, peptides and lipids by negative mode probe electrospray ionization mass spectrometry (PESI-MS). With th
Publikováno v:
Mass spectrometry (Tokyo, Japan). 2(1)
Studies of clusters in condensed phase at atmospheric pressure are very important for understanding the properties and structures of liquids. Liquid-ionization (LPI) mass spectrometry is useful to study hydrogen-bonded clusters at the liquid surface
Autor:
Takako Moriyasu, Keiko Minowa, shuzo Ogino, Haruhiko Fukaya, Miho Sakamoto, Jun’ichi Nakajima, Kiyoko Kishimoto, Ken’ichiro Mori, Hideo Kadoi, Yasuo Shida
Publikováno v:
Journal of AOAC International. 94(6)
An analog of aildenafil, which is a potent and highly selective inhibitor of phosphodiesterase 5, was found in a dietary supplement marketed for enhancement of sexual function. The compound was isolated by silica gel column chromatography, and its st
Publikováno v:
Journal of the Mass Spectrometry Society of Japan. 22:217-224
Mass spectra of p-quinol derivatives were measured. The fragmentation patterns were discussed on the basis of the high resolution data, metastable ions and deuterium labeling of the hydroxyl group of p-quinols.
Publikováno v:
Bulletin of the Chemical Society of Japan. 60:1881-1886
The in-beam EIMS and SIMS of three quaternary ammonium chlorides of benzylamine derivatives have been examined, and their fragmentation processes have been clarified by means of the B⁄E costant and B2⁄E constant linked scanning techniques. The B
Publikováno v:
Journal of the Mass Spectrometry Society of Japan. 21:85-90
A study of[M-C2H2O]+, [M-C2H2O-HCN]+, and[M-C2H2O-HCN-H]+ ions in the mass spectra of deuterated derivatives of acetanilide, o-, m-and p-chloroacetanilide has confirmed that elimination of ketene from the molecular ions of these compounds proceeds vi
Publikováno v:
HETEROCYCLES. 29:629