Results 281 to 290 of about 610,359 (296)
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Journal of Inorganic and Nuclear Chemistry, 1961
Abstract The mass spectrum of stannane, SnH 4 , has been studied. Ion fragmentation patterns for both the singly and doubly charged fragments were obtained employing 70 V electrons. From appearance potential data, an estimation of the bond energies of the tin-hydrogen bond in the ion-species SnH 3 + H, SnH 2 + H, Sn + H has been made along with
H.J. Svec, F.E. Saalfeld
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Abstract The mass spectrum of stannane, SnH 4 , has been studied. Ion fragmentation patterns for both the singly and doubly charged fragments were obtained employing 70 V electrons. From appearance potential data, an estimation of the bond energies of the tin-hydrogen bond in the ion-species SnH 3 + H, SnH 2 + H, Sn + H has been made along with
H.J. Svec, F.E. Saalfeld
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The mass spectrum of mevalonolactone
Organic Mass Spectrometry, 1974AbstractThe principal fragmentation pathways of mevalonolactone are initiated by cleavage α to the hydroxyl function. Each major route has been delineated by using isotopic labelling and metastable analysis. A knowledge of this fragmentation pattern is useful for the calculation of isotopic purity and specificity in samples of mevalonolactone used as ...
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Mass spectrum of the strange dibaryon
Physical Review D, 1988Based on the diquark-cluster model, the mass spectrum of low-lying S=-1 strange dibaryons is predicted. In this scheme, two ${J}^{P}$${=0}^{\mathrm{\ensuremath{-}}}$ states with I=(1/2 and (3/2 are degenerate at the lowest-energy level, around 2.2 GeV c.m. energy.
H. Nakamura, N. Konno, H. Noya
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Organic Mass Spectrometry, 1974
AbstractThe mass spectrum of nitromethane points to rupture of the CH3NO2 bond as the dominant primary reaction, as also observed in pyrolysis, photolysis and radiolysis. Isomerization of the molecular ion to the nitrite configuration seems to contribute little in the mass spectrum of nitromethane, in contrast to those of nitrobenzene and other ...
Ellis K. Fields, Seymour Meyerson
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AbstractThe mass spectrum of nitromethane points to rupture of the CH3NO2 bond as the dominant primary reaction, as also observed in pyrolysis, photolysis and radiolysis. Isomerization of the molecular ion to the nitrite configuration seems to contribute little in the mass spectrum of nitromethane, in contrast to those of nitrobenzene and other ...
Ellis K. Fields, Seymour Meyerson
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Journal of Forensic Sciences, 1997
Abstract The current literature allows an analysis of the electron impact mass spectral fragmentations of cocaine (I). Using published high-resolution mass measurements as a reference, the mass spectra of several cocaine derivatives were examined—specifically those having individual functional group modifications at the nitrogen, alkyl ...
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Abstract The current literature allows an analysis of the electron impact mass spectral fragmentations of cocaine (I). Using published high-resolution mass measurements as a reference, the mass spectra of several cocaine derivatives were examined—specifically those having individual functional group modifications at the nitrogen, alkyl ...
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Il Nuovo Cimento, 1959
Extended particles can possess an angular momentum as well as an intrinsic spin s. The energy can be expected to be a function of l(l + 1) and of s(s + 1) and may assume the simple form E/C/sup 2/ = aSTAl(l + 1) + s(s + l)!m/ sub e/The lightest meson is the mu meson with mass m == 207 m/sub e/.
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Extended particles can possess an angular momentum as well as an intrinsic spin s. The energy can be expected to be a function of l(l + 1) and of s(s + 1) and may assume the simple form E/C/sup 2/ = aSTAl(l + 1) + s(s + l)!m/ sub e/The lightest meson is the mu meson with mass m == 207 m/sub e/.
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Ultrasonic spectrum of adrenal masses
Urology, 1979Adrenal masses are amenable to ultrasonic examination. The ultrasonic characteristics of eight adrenal masses in 6 patients are described. In particular, an ultrasonic study of the natural history and progression of a large adrenal adenoma is reported.
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Mass spectrum of methyldifluorosilyltetracarbonylcobalt
Inorganic Chemistry, 1968F. E. Saalfeld +3 more
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Mass spectrum of trifluorosilyltetracarbonylcobalt
Inorganic Chemistry, 1968F. E. Saalfeld +3 more
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