Relativistic Bohr Model with Finite-Mass Nucleus

1970 ◽  
Vol 38 (9) ◽  
pp. 1145-1150 ◽  
Author(s):  
James T. Cushing
Keyword(s):  
Finite Mass ◽  
Mass Nucleus

scholarly journals Chimera Spectrum Diagnostics for Peptides Using Two-Dimensional Partial Covariance Mass Spectrometry

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3728
Author(s):  
Taran Driver ◽  
Nikhil Bachhawat ◽  
Leszek J. Frasinski ◽  
Jonathan P. Marangos ◽  
Vitali Averbukh ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Peptide Sequence ◽  
Two Dimensional ◽  
Peptide Ions ◽  
Finite Mass ◽  
Protein Database ◽  
Spectra Analysis ◽  
Fragment Ions ◽  
Single Precursor ◽  
The Common

The rate of successful identification of peptide sequences by tandem mass spectrometry (MS/MS) is adversely affected by the common occurrence of co-isolation and co-fragmentation of two or more isobaric or isomeric parent ions. This results in so-called `chimera spectra’, which feature peaks of the fragment ions from more than a single precursor ion. The totality of the fragment ion peaks in chimera spectra cannot be assigned to a single peptide sequence, which contradicts a fundamental assumption of the standard automated MS/MS spectra analysis tools, such as protein database search engines. This calls for a diagnostic method able to identify chimera spectra to single out the cases where this assumption is not valid. Here, we demonstrate that, within the recently developed two-dimensional partial covariance mass spectrometry (2D-PC-MS), it is possible to reliably identify chimera spectra directly from the two-dimensional fragment ion spectrum, irrespective of whether the co-isolated peptide ions are isobaric up to a finite mass accuracy or isomeric. We introduce ‘3-57 chimera tag’ technique for chimera spectrum diagnostics based on 2D-PC-MS and perform numerical simulations to examine its efficiency. We experimentally demonstrate the detection of a mixture of two isomeric parent ions, even under conditions when one isomeric peptide is at one five-hundredth of the molar concentration of the second isomer.

Performance of a Stirling Engine Regenerator Having Finite Mass

1986 ◽  
Vol 108 (4) ◽  
pp. 669-673 ◽  
Author(s):  
J. D. Jones
Keyword(s):  
Finite Element ◽  
Pressure Variation ◽  
Stirling Engine ◽  
System Model ◽  
Finite Mass ◽  
Element System ◽  
The Matrix ◽  
Cyclic Variations ◽  
Good Agreement ◽  
Engine Power

The performance of a Stirling engine regenerator subjected to sinusoidal mass flow rate and pressure variation is analyzed. It is shown that cyclic variations in the temperature of the matrix due to its finite mass lead to an increase in the apparent regenerator effectiveness, but a decrease in engine power. Approximate closed-form expressions for both of these effects are deduced. The results of this analysis are compared with the predictions of a finite-element system model, and good agreement is found.

Search for finite-mass neutrinos in the decay

1981 ◽  
Vol 106 (3) ◽  
pp. 175-178 ◽  
Author(s):  
F.P. Calaprice ◽  
D.F. Schreiber ◽  
M.B. Schneider ◽  
M. Green ◽  
R.E. Pollock
Keyword(s):  
Finite Mass

Evidence for a strongly-coupled band in very neutron-deficient odd-mass nucleus [sup 185]Pb

2008 ◽  
Author(s):  
J. Pakarinen ◽  
A. N. Andreyev ◽  
S. Antalic ◽  
L. Bianco ◽  
I. G. Darby ◽  
...  
Keyword(s):  
Strongly Coupled ◽  
Mass Nucleus

Stability of disk-like galaxies – Part II: The Kuzmin disk

Analysis ◽  
2007 ◽  
Vol 27 (4) ◽  
Author(s):  
Roman Fiřt
Keyword(s):  
Steady State ◽  
Nonlinear Stability ◽  
Variational Approach ◽  
Poisson System ◽  
Finite Mass

SummaryWe prove the existence and nonlinear stability of the Kuzmin disk, a polytropic steady state of the Vlasov–Poisson system widely used in astrophysics, which has infinite support, but finite mass. As in Part I we use the variational approach by REIN and GUO.

The Finite Mass Method

2000 ◽  
Vol 37 (6) ◽  
pp. 1768-1799 ◽  
Author(s):  
Christoph Gauger ◽  
Peter Leinen ◽  
Harry Yserentant
Keyword(s):  
Finite Mass
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