Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Relative multiplicative sensitivity

It is interesting that the stimulus compounds used in the study differ widely in their molecular structures, and yet they all interact with antibodies to thaumatin. It is, therefore, probable that a single receptor-structure responds to all sweet stimuli,there being a variation in the relative effectiveness of sweet stimuli across individual nerve-fibers, and the characteristics of all receptor sites do not appear to be identical. Earlier elec-trophysiological studies of single primary, afferent taste-neurons uniformly agreed that individual fibers very often have multiple sensitivities, and that individual, gustatory receptors are part of the receptive field of more than one afferent fiber. " We have yet to learn how these interact, and the nature of their excitatory, or possible inhibitory, relations, or both. [Pg.334]

The effect could be considerable for solvent-exposed parts of the backbone and could render the NOE values inaccurate. These systematic errors could be minimized by using water flip-back pulses in order to avoid saturation of H20 magnetization [11]. The NOE data are generally more susceptible to errors than Ri and R2 because (i) the NOE experiments start with the equilibrium 15N magnetization that is 10 fold lower than that of (XH) in the Hi and R2 experiments, hence relatively low sensitivity, and (ii) the NOE values are derived from only two sets of measurements, whereas R1 and R2 data are obtained from fitting multiple sets of data the latter is expected to result in a more efficient averaging of experimental errors. [Pg.285]

Quantities Axj define the deviation of influential factors from the values at which the calibration of the gas sensor was taking place (determination of sensitivity S and the initial level of the output signal b). Having known the relative multiplicative and additive sensitivities of the sensor to the influential factors and the deviation of influential factors from the calibration values, the systematic error of the sensor can be calculated and appropriate corrections to the measurement results can be introduced. [Pg.233]

After stabilization of the set temperature, the zirconia gas sensor has to be graduated to exactly the same volume and sequence as at determination of those sensor errors in laboratory conditions. The relative additive and multiplicative sensitivities to the temperature factor are calculated by experimental data ... [Pg.248]

In El-MS, the major ions formed from PBDEs are the and the [M — 2Br], which can be used for its identification and quantitation. This ionization technique facilitates the analysis of BDE congeners in the presence of possible coeluted compounds (such as PCBs). EI-LRMS is not routinely used for the PBDE analysis, because of its relatively low sensitivity, especially for the analysis of higher brominated BDE congeners (hepta- to deca-DBE). However, this ionization mode allows the acquisition of full scan spectra, thus offering a multiple choice in ion selection than ECNI mode. Yet, ECNI is more selective towards aromatic brominated compounds. [Pg.1225]

Amperometric Wide variety of biochemical redox mechanisms as basis for signal generation Easily miniaturised Good dynamic range, controllable by membrane thickness Relatively good sensitivity Requires a reference electrode Multiple membranes or enzymes may be necessary for required selectivity and sensitivity... [Pg.176]

A variety of tritiated ( H) steroids are available as the radiolabeled compounds for use in the RIA. The relatively low sensitivity of H can be increased by multiple labeling. Another alternative is I labeling. Radioiodinated aromatic amines or amino acids, such as tyramine, tyrosine, or histamine, are linked to the steroid by the above-mentioned reactions to obtain the label. [Pg.2103]

McCrary JE, Heagler MG. 1997. The use of a simultaneous multiple species acute toxicity test to compare the relative sensitivities of aquatic organisms to mercury. J Environ Sci Health Part A Environ Sci Eng Toxic Hazardous Substance Control 32 73-81. [Pg.180]

Neuropathic pain is defined as spontaneous pain and hypersensitivity to pain associated with damage to or pathologic changes in the peripheral nervous system as in painful diabetic peripheral neuropathy (DPN), acquired immunodeficiency syndrome (AIDS), polyneuropathy, post-herpetic neuralgia (PHN) or pain originating in the central nervous system (CNS), that which occurs with spinal cord injury, multiple sclerosis, and stroke. Functional pain, a relatively newer concept, is pain sensitivity due to an abnormal processing or function of the central nervous system in response to normal stimuli. Several conditions considered to have this abnormal sensitivity or hyperresponsiveness include fibromyalgia and irritable bowel syndrome. [Pg.488]


See other pages where Relative multiplicative sensitivity is mentioned: [Pg.233]    [Pg.233]    [Pg.274]    [Pg.669]    [Pg.753]    [Pg.753]    [Pg.3447]    [Pg.669]    [Pg.11]    [Pg.219]    [Pg.55]    [Pg.2205]    [Pg.576]    [Pg.190]    [Pg.444]    [Pg.449]    [Pg.67]    [Pg.195]    [Pg.74]    [Pg.576]    [Pg.1374]    [Pg.95]    [Pg.152]    [Pg.283]    [Pg.1306]    [Pg.321]    [Pg.185]    [Pg.105]    [Pg.154]    [Pg.574]    [Pg.280]    [Pg.296]    [Pg.332]    [Pg.167]    [Pg.285]    [Pg.37]    [Pg.317]    [Pg.162]    [Pg.221]    [Pg.274]    [Pg.456]    [Pg.337]   
See also in sourсe #XX -- [ Pg.233 ]




SEARCH



Multiple sensitization

Relative sensitivity

Sensitivity multiplicity

© 2024 chempedia.info