Frequencies natural

Blum AS, Dal Pan GJ et al (1996) Low-dose zalcitabine-related toxic neuropathy frequency, natural history, and risk factors. Neurology 46(4) 999-1003 Bradley WG, Verma A (1996) Painful vascuhtic neuropathy in HlV-1 infection relief of pain with prednisone therapy. Neurology 47(6) 1446-1451 Breen EC (2002) Pro- and anti-inflammatory cytokines in human immunodeficiency virus infection and acquired immunodeficiency syndrome. Pharmacol Ther 95(3) 295-304 Bremer J (1990) The role of carnitine in intracellular metabolism. J Clin Chem Clin Biochem 28(5) 297-301... 

The complex, random, and seemingly aperiodic internal motions of a vibrating molecule are the result of the superposition of a number of relatively simple vibratory motions known as the normal vibrations or normal modes of vibration of the molecule. Each of these has its own fixed frequency. Naturally, then, when many of them are superposed, the resulting motion must also be periodic, but it may have a period so long as to be difficult to discern. 

Figure 8. The high frequency nature of the vertical velocity (W), water vapor (q ), and CO2 densities (C ) at 2 meters above a soybean canopy during a 3 minute period. The illustration also shows instantaneous water vapor (W q ) and carbon dioxide (W C ) fluxes and the mean quantities for the 15 minute period from which these traces were taken. Data courtesy of Center for Agricultural Meteorology and Climatology, University of Nebraska, Lincoln, Nebraska, and Environmental Sciences Division, Lawrence Livermore National Laboratory, Livermore, California.

Frequency Nature of Vibration Compound Absorption coefficient... 

Frequency Natural Sensitivity Magnetic Spin Quadrupole Magnetogyric... 

This need for quantum mechanical techniques also arises in the connection between dynamics simulation and experiment when the detailed nature of light-matter interaction is important. An example is the initiation and probing of solution dynamics by ultrafast light pulses, in which the detailed time-frequency nature of the light interacts with the detailed time-frequency nature of the solution, and quantum aspects can become important. 1 At this level, the quantum dynamics of how the excitation and probe laser pulses interact with the sample must be considered in addition to all the other dynamics of the reaction process,... 

The intentional sparks produced by these machines have also been blamed in a number of surgical drape fires. The high-frequency nature of these therapeutic electrical waveforms also makes it easier for them to become capacitively coupled to other tissue or conductive pathways. Burns due to such coupling and/or insulation failures during laparoscopic procedures are often the result. Since such burns are usually outside the surgeon s visual field, they often go untreated. 

From Fig. 5.10 it is seen that both the acoustic and optical modes are involved in Cl.nnCA , w), and these contribute to the time evolution in FiMN(fc)A)- It is the low-frequency nature of the acoustic mode in the small-A region that is responsible for the slow decay of Ffiti k,t). 

On the other hand, it is seen from Fig. 5.10 that only the higher-frequency optical mode is involved in C L,zz(fc,w). This is because only the rotational motions give rise to the local charge-density fluctuations. (The translational motions do not due to the charge-neutrality of the solvent molecule.) Thus it is the higher-frequency nature of the optical... 

N. Liu, H. Guo, L. Fu, S. Kaiser, H. Schweizer, H. Giessen, Three-dimensional photonic metamaterials at optical frequencies. Nature Mater. 7, 31-37 (2008)... 

For a linear macromolecule in space, a restriction to only one dimension does not correspond to reality. One must consider that in addition to one-dimensional, longitudinal vibrations of N vibrators, there are two transverse vibrations, each of N frequencies. Naturally, the longitudinal and transverse vibrations should have different 0,-values in Eq. (5). For a two-dimensional molecule, there are two longitudinal vibrations, as described by Eq. (7) in Fig. 2.38, and one transverse vibration with half as many vibrations, as given in Eq. (6). As always, the total possible number of vibrations per atom must be three, as fixed by the number of degrees of freedom. 

Soluble boFCHi suppression reduces corrosion and therefore initiator frequency FuU condoisate polishing reduces steam g erator corrosiem and hence, reduces initiator frequency Transients Soluble boron suppression reduces initiator frequency Natural convection ccmling supress initiatcH ... 

Figure 8.23 shows vibrational modes available for AX. systems (any atom joined to two other atoms, e.g., NH2, NO, CH, etc.). Normally each vibration mode absorbs at a different frequency. Thus a CH group may give rise to two C— H stretch bands, sjnnmetric and asymmetric. However, this is not always true. There will be some vibrations which may absorb at the same frequency. Naturally their absorption bands will overlap. Such vibrations are called degenerate. Also, there are vibrations whose absorption frequency may lie outside the normal infrared region examined. 

Risk Assessment and Analysis—severity, frequency, nature of exposures. 

Resonance frequency Natural frequency of an oscillator, based on the repetition of a periodic event. 

As stated in the introduction to this section the subcritical crack growth in a polymer is due to the thermomechanical activation of different molecular deformation processes such as chain slip and orientation or void opening. The energy dissipated depends on the frequency, nature, kinetics, and interaction of these processes. But there are many and notable attempts to treat the subcritical crack propagation as one thermally activated multi-step process characterized by one enthalpy or energy of activation and one activation volume. Several of these kinetic theories of fracture have been treated in Chapters 3 and 8. 

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