What's the difference between spectra and spectral?

Spectra


Definition:

  • (pl. ) of Spectrum

Example Sentences:

  • (1) In these liposomes, the amounts and molecular states of SL-MDP were determined from ESR spectra and are discussed in connection with its immunopotentiating property.
  • (2) The resonance Raman spectra of oxy and deoxy cobalt-substituted hemoglobin (CoHb) are reported.
  • (3) These spectra show marked differences between sources.
  • (4) 1H-NMR spectra of urine from a patient with propionic acidemia show peaks of 3-hydroxy-n-valerate, methylcitrate, propionyl glycine, 3-hydroxy-n-butyrate, lactate, 3-hydroxypropionate, tiglylglycine and hippurate.
  • (5) Line broadening detected in several of the high-field nuclear magnetic resonance spectra was attributed to cis-trans isomerization.
  • (6) Theoretical 13C NMR spectra for all possible structures of some linear polysaccharides were calculated by using additive scheme of glycosidation effects.
  • (7) A red pigment produced by the actinomycete strain B 4358 was identified as butyl-meta-cycloheptylprodiginine (4) by 1H, 13C and correlation via long range coupling NMR spectra.
  • (8) The optical efficiencies are similar and depend on the match of the excitation characteristics of the stain with the emission spectra of the light source.
  • (9) The performance of the instrument was evaluated by undertaking in vitro measurements of the reflectance spectra of blood.
  • (10) 2) Left-right PHR coherence spectra had no distinct peaks, indicating that correlations between opposite PHR discharges were now not frequency specific.
  • (11) The frequency spectra of transmission coefficients for ultrasound passing through a sheet of gas-filled micropores have been measured using incident waves with amplitudes up to 2.4 x 10(4) Pa.
  • (12) Circular dichroism (CD) spectra indicating different local orientation of oxazolone, when coupled to L or D side chain-terminating amino acids, support this suggestion.
  • (13) Except in the case of the phenolic metabolite, structures were confirmed by direct comparison of electron impact mass spectra and chromatographic behaviour with those of authentic samples.
  • (14) The positive ion spectra obtained from primary prostaglandins such as PGE1 PGE2, 19-OHPGE1, 19-OHPGE2, PGF2 alpha, PGD2, 6-keto-PGF1 alpha and from leukotriene B4 are very simple, with base peaks corresponding to ions arising from the loss of H2O from the (M + H)+ and (M + NH4)+ ions, except for PGB2 and PGF2, where the latter two ions predominate.
  • (15) A comparative study was performed for isoelectric and electrophoretic spectra blood serum albumin of parental breeds of chickens and their heterosis hybrids --broiler cocks.
  • (16) Short time Fourier power spectra yield activity related data of the EEG.
  • (17) In addition, (31)P nuclear magnetic resonance spectra can provide a continuous monitor of the intracellular pH.
  • (18) A major part of the iron is in a form which shows magnetically split spectra at low temperatures.
  • (19) Similarities between the LIF spectra of atherosclerotic plaque and collagen and normal aorta and elastin were noted.
  • (20) The same model gives theoretical absorption spectra consistent with available experimental data.

Spectral


Definition:

  • (a.) Of or pertaining to a specter; ghosty.
  • (a.) Of or pertaining to the spectrum; made by the spectrum; as, spectral colors; spectral analysis.

Example Sentences:

  • (1) Spectral analysis of spontaneous heart rate fluctuations, a powerful noninvasive tool for quantifying autonomic nervous system activity, was assessed in Xenopus Laevis, intact or spinalized, at different temperatures and by use of pharmacological tools.
  • (2) From these data it is possible to predict theoretically the apparent temperature difference as seen by an infrared scanner or radiometer with a detector of which the spectral detectivity, D (lambda), is known.
  • (3) Ultraviolet difference spectrophotometry indicates that the inactivated enzyme retains its capacity for binding the nucleotide substrates whereas the spectral perturbation characteristic of 3-phosphoglycerate binding is abolished in the modified enzyme.
  • (4) In scanning of more than 20 Hz frequency, the spectral pattern also reflected the characteristics of the cone system.
  • (5) The probable reaction mechanisms prevailing in both cases are discussed in accordance with the low and high resolution mass spectral data presented.
  • (6) Four types of behavior were observed with increasing stimulation level: 1) the two spectral parameters and conduction velocity both increased with stimulation in 15 experiments, 2) the two spectral parameters decreased and conduction velocity increased in 8 experiments, 3) the two spectral parameters and conduction velocity both decreased in 6 experiments, and 4) the two spectral parameters increased and conduction velocity decreased in 3 experiments.
  • (7) In the analysis of background fluorescence, the principal components were, as for the two-step technique, autofluorescence and propidium spectral overlap.
  • (8) Starting from the observation that the part above 6 Hz of the power spectrum of force tremor during isometric contractions can be related to the unfused twitches of motor units firing asynchronously, an attempt was made to study the usefulness of force tremor spectral analysis as a global descriptor of motoneurone pool activity.
  • (9) Spectral changes were observed before histologic changes were apparent.
  • (10) Approaches have been worked out for the determination of qualitative composition of the mixtures and spectral parameters.
  • (11) Their structures were deduced as 3-O-beta-D-glucopyranosyl (1----3)-alpha-L-rhamnopyranosyl (1----2)-alpha-L-arabinopyranosyl hederagenin 28-O-beta-D-glucopyranosyl (1----6)-beta-D-glucopyranosyl ester (VII) and 3-O-alpha-L-rhamnopyranosyl (1----3)-beta-D-glucopyranosyl (1----3)-alpha-L-rhamnopyranosyl (1----2)-alpha-L-arabinopyranosyl hederagenin 28-O-beta-glucopyranosyl (1----6)-beta-D-glucopyranosyl ester (VIII), based on spectral analysis and chemical evidences as well as results of 2D-HPTLC.
  • (12) The melting profile exhibited two transitions--one at about 35 degrees C and one above 50 degrees C. Our spectral data showed that helices I and II were stable during the first transition, and agreed with other data that helix III was the most likely helix to have melted.
  • (13) The pH dependence of this spectral change gave a sigmoidal curve fitted well to a theoretical curve of a cooperative release of two protons with a pK value of 7.5, indicating the existence of the acidic and alkaline forms of the ferrous CO enzyme.
  • (14) The respiratory functions of the oropharynx, larynx, and trachea of normal human fetuses in utero were explored by means of real-time, two-dimensional ultrasonography combined with color-flow and spectral Doppler analysis.
  • (15) The spectral interaction between Hoechst and chromomycin is quantified.
  • (16) RR spectra of fatty acyl-CoA and its complexes are consistent with the previous hypothesis that visible spectral shifts observed during formation of acetoacetyl-CoA and crotonyl-CoA complexes of fatty acyl-CoA dehydrogenase result from charge-transfer interactions in which the ground state is essentially nonbonding as opposed to interactions in which complete electron transfer occurs to form FAD semiquinone.
  • (17) 4, 669-679), on the other hand, operates only on a collection of spectral data to extract the common spectral components with their spectral weights.
  • (18) On the basis of spectral and chemical evidence, pedicularioside E and F were identified to be 1'-O-beta-D-(3-methoxy-4-hydroxy-beta-phenyl)-ethyl-6'-O-feruloyl- alpha-L-(2-acetyl)-rhamnosyl-(1----3')-4'-acetylglucopyranoside and shanzhisin methyl ester cellobioside, respectively.
  • (19) The reports of rod-dominated psychophysical spectral sensitivity from the deprived eye of monocularly lid-sutured (MD) monkeys are intriguing but difficult to reconcile with the absence of any reported deprivation effects in retina.
  • (20) Comparison of implant-user performance with the temporal-only data reported here can help determine whether the speech information available to the implant user consists of entirely temporal cues, or is augmented by spectral cues.

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