Results 251 to 260 of about 4,533,614 (299)

Increased triglyceride levels in shift workers

The American Journal of Medicine, 1992
To assess an independent relationship between shift work and serum lipid levels.Cross-sectional survey.Two plants of northern France: a chemical one and a nuclear power station.All the shift workers of the chemical plant and of one part of the nuclear station.
M, Romon, M C, Nuttens, C, Fievet, P, Pot, J M, Bard, D, Furon, J C, Fruchart   +6 more
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The shifting level in traumatic lipohaemarthrosis

Injury, 1972
The recognition of lipohaemarthrosis in an injured joint can be of value because it proves the presence of a fracture that may otherwise go unrecognized. Lipohaemarthrosis is indicated by the presence of a fluid level on radiography. A variant of this radiological sign is described.
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Proton recoil and radiative level shifts

Physical Review Letters, 1987
Proton mass corrections to the Lamb shift of hydrogen of order ..cap alpha..(Z..cap alpha..)/sup 5/m/sup 2//M are evaluated. These contributions are expected new terms beyond those given earlier for recoil effects to the self-energy of a bound electron in the external-field approximation. The new contribution of this order is -0.53 kHz, thus making the
, Bhatt, , Grotch
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Energy Level Shifts in a Large Enclosure

Physical Review, 1956
It is proved that for a particle enclosed in a large box, a potential shifts the energy levels by an amount which, as the volume v of the enclosure tends to infinity in a suitable manner, becomes proportional to ${E}^{\frac{1}{2}}\ensuremath{\delta}(E){v}^{\ensuremath{-}\frac{1}{3}}$, where $\ensuremath{\delta}$ is the corresponding phase shift ...
Fukuda, N., Newton, R. G.
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Level shifting effect

Chemical Physics Letters, 1970
Abstract A level shifting effect in relation to the coupling of degenerate electronic states with vibrations in crystals is discussed. In this effect a degenerate level interacting with the lattice-phonon spectrum is shifted without the removal of degeneracy. This phenomenon is compared with Jahn-Teller effect in which the degeneracy is statically or
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The Electromagnetic Shift of Energy Levels

Physical Review, 1947
B very beautiful experiments, Lamb and Retherford1 have shown that the fine structure of the second quantum state of hydrogen does not agree with the prediction of the Dirac theory. The 2s level, which according to Dirac’s theory should coincide with the 2p 1 2 level, is actually higher than the latter by an amount of about 0.033 cm−1 or 1000 ...
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Random Level-Shift Time Series Models, ARIMA Approximations, and Level-Shift Detection

Journal of Business & Economic Statistics, 1990
The main purpose of this article is to assess the performance of autoregressive integrated moving average (ARIMA) models when occasional level shifts occur in the time series under study. A random level-shift time series model that allows the level of the process to change occasionally is introduced. Between two consecutive changes, the process behaves
Chung Chen, George C. Tiao
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Some properties of a unit root test with multiple level shifts in the presence of Markov level shifts

Mathematics and Computers in Simulation, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Level Shifts in Predissociating Systems

Canadian Journal of Physics, 1975
Analytical expressions are derived for the level shifts in systems undergoing type II predissociation. It is shown that the shifts at energies above the curve crossing point may be expected to oscillate in sign, with an amplitude comparable to the line width.
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Hearing Level, Hearing Loss, and Threshold Shift

The Journal of the Acoustical Society of America, 1958
To the Editor: The following excerpt from our recent paper in theA. M. A. Archives of Industrial Healthentitled, "The Medical Principles of Monitoring Audiometry" (Davis, H.; Hoople, G., and Parrack, H. O.:A. M. A. Arch. Indust. Health17:1-20, 1958), speaks for itself. "Hearing Level, Hearing Loss, and Threshold Shift.—The familiar term 'hearing loss'
Hallowell Davis, Gordon D. Hoople, Horace O. Parrack   +2 more
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