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Spectrophotometry, Atomic Absorption -- See Spectrophotometry, Atomic


Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed.
  1
Spectrophotometry, Atomic -- Periodicals.     1
Spectrophotometry, Infrared.   10
Spectrophotometry, Infrared -- Bibliography.   1976 1
Spectrophotometry, Infrared -- trends.   2008 1
Spectrophotometry -- methods.   2017 1
 

Spectroscopy -- See Spectrum Analysis


The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
  1
Spectroscopy, Electron Energy-Loss.   1980 1
Spectroscopy, Electron Energy-Loss -- methods.   1980 1
Spectroscopy, Fourier Transform Infrared.   23
 

Spectroscopy, Infrared, Fourier Transform -- See Spectroscopy, Fourier Transform Infrared


A spectroscopic technique in which a range of wavelengths is presented simultaneously with an interferometer and the spectrum is mathematically derived from the pattern thus obtained.
  1
 

Spectroscopy, Magnetic Resonance -- See Magnetic Resonance Spectroscopy


Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
  1
 

Spectroscopy, Mass -- See Mass Spectrometry


An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
  1
 

Spectroscopy, Mass, Matrix-Assisted Laser Desorption-Ionization -- See Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization


A mass spectrometric technique that is used for the analysis of large biomolecules. Analyte molecules are embedded in an excess matrix of small organic molecules that show a high resonant absorption at the laser wavelength used. The matrix absorbs the laser energy, thus inducing a soft disintegration of the sample-matrix mixture into free (gas phase) matrix and analyte molecules and molecular ions. In general, only molecular ions of the analyte molecules are produced, and almost no fragmentation occurs. This makes the method well suited for molecular weight determinations and mixture analysis.
  1
 

Spectroscopy, Mass, Secondary Ion -- See Spectrometry, Mass, Secondary Ion


A mass-spectrometric technique that is used for microscopic chemical analysis. A beam of primary ions with an energy of 5-20 kiloelectronvolts (keV) bombards a small spot on the surface of the sample under ultra-high vacuum conditions. Positive and negative secondary ions sputtered from the surface are analyzed in a mass spectrometer in regards to their mass-to-charge ratio. Digital imaging can be generated from the secondary ion beams and their intensity can be measured. Ionic images can be correlated with images from light or other microscopy providing useful tools in the study of molecular and drug actions.
  1
Spectroscopy, Mossbauer.   2
Spectroscopy, Mossbauer -- statistics & numerical data.   1976 1
Spectroscopy, Near-Infrared.   3
Spectroscopy, Near-Infrared -- methods.   2001 1
 

Spectroscopy, NMR -- See Magnetic Resonance Spectroscopy


Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
  1
 

Spectroscopy, Nuclear Magnetic Resonance -- See Magnetic Resonance Spectroscopy


Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
  1
Spectrum Analysis.   84
Spectrum Analysis -- Congresses.   2
Spectrum Analysis -- history.   1999 1
Spectrum Analysis -- instrumentation.   2
 

Spectrum Analysis, Mass -- See Mass Spectrometry


An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
  1
 

Spectrum Analysis, Mass-Gas Chromatography -- See Gas Chromatography-Mass Spectrometry


A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds.
  1
Spectrum Analysis -- methods.   16
Spectrum Analysis -- Periodicals.   15
Spectrum Analysis, Raman.   22
Spectrum Analysis, Raman -- electronic information resources.   2001 1
Spectrum Analysis, Raman -- methods.   3
Spectrum Analysis, Raman -- Periodicals.     1
Spectrum Analysis -- Tables.   c1977 1
 

Speculum -- See Surgical Instruments


Hand-held tools or implements used by health professionals for the performance of surgical tasks.
  1
 

Speech -- See Also Verbal Behavior


Includes both producing and responding to words, either written or spoken.
  1
Speech.   44
Speech Acoustics.   3
 

Speech, Alaryngeal -- See Also Larynx, Artificial


A device, activated electronically or by expired pulmonary air, which simulates laryngeal activity and enables a laryngectomized person to speak. Examples of the pneumatic mechanical device are the Tokyo and Van Hunen artificial larynges. Electronic devices include the Western Electric electrolarynx, Tait oral vibrator, Cooper-Rand electrolarynx and the Ticchioni pipe.
  1
Speech, Alaryngeal.   7
Speech, Alaryngeal -- Congresses.   2
 

Speech and Language Disorder Rehabilitation -- See Rehabilitation of Speech and Language Disorders


Procedures for assisting a person with a speech or language disorder to communicate with maximum efficiency.
  1
 

Speech Articulation Disorders -- See Articulation Disorders


Disorders of the quality of speech characterized by the substitution, omission, distortion, and addition of phonemes.
  1
Speech Articulation Tests.   c1994 1
Speech -- Atlases.   c1979 1
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