Sensitivity decrease

Some skin sensitization to low molecular-weight DGEBPA resins (mol wt - 340) has been shown in animals and humans. Skin sensitization decreases with an increase in molecular weight but the presence of low molecular-weight fractions in the advanced resins may present a hazard to skin sensitization (43). 

A solution of iodine in aqueous iodide has an intense yellow to brown colour. One drop of 0.05M iodine solution imparts a perceptible pale yellow colour to 100 mL of water, so that in otherwise colourless solutions iodine can serve as its own indicator. The test is made much more sensitive by the use of a solution of starch as indicator. Starch reacts with iodine in the presence of iodide to form an intensely blue-coloured complex, which is visible at very low concentrations of iodine. The sensitivity of the colour reaction is such that a blue colour is visible when the iodine concentration is 2 x 10 " 5 M and the iodide concentration is greater than 4x 10 4M at 20 °C. The colour sensitivity decreases with increasing temperature of the solution thus at 50 °C it is about ten times less sensitive than at 25 °C. The sensitivity decreases upon the addition of solvents, such as ethanol no colour is obtained in solutions containing 50 per cent ethanol or more. It cannot be used in a strongly acid medium because hydrolysis of the starch occurs. 

Another type of probe is based on the principle of the sudden cooling of the heated element. When foam comes in contact with a heated electrical element, the hot surface detects sudden cooling, which is translated to an output signal. The major problem with the use of a heated element is fouling of the media the sensitivity decreases while it is used, so such detectors may not be reliable in practice. 

Thiazolidinediones are known to increase insulin sensitivity by stimulating peroxisome proliferator-activated receptor gamma (PPAR-y). Stimulation of PPAR-y results in a number of intracellular and extracellular changes, including an increased number of insulin receptors, increased insulin receptor sensitivity, decreased plasma fatty acid levels, and an increase in a host of intracellular signaling proteins that enhance glucose uptake. 

Decrease baroreflex sensitivity Decrease -receptor response Decrease 2 -receptor response Increase sensitivity to barbiturates Decrease glucose tolerance... 

Under ideal conditions, a commercial X-band spectrometer can detect about 1012 spins (ca. 10-12 moles) at room temperature. This number of spins in a 1 cm3 sample corresponds to a concentration of about 1(U9 m. By ideal conditions, we mean a single line, on the order of 0.1 G wide, with sensitivity going down roughly as the reciprocal square of the line width. When the resonance is split into two or more hyperfine lines, sensitivity decreases still further. Nonetheless, ESR is a remarkably sensitive technique, especially compared with NMR. 

The mode transition is shown in Fig. 3.5b-d for different overlay thicknesses, namely 200,250, and 300 nm. As observed in the figures, the transition region moves to lower SRIs as the overlay thickness increases, approaching the ambient index of 1.33 where bare LPGs demonstrate a significantly lower sensitivity. As a secondary effect, the SRI sensitivity becomes smaller as the overlay thickness increases. However, even if the absolute sensitivity decreases, the relative sensitivity in comparison to the bare device still increases as will be shown experimentally. 

It is worth noting that, although the maximum sensitivity decreases for thicker overlays, the sensitivity gain with respect to the bare device increases. In fact, the sensitivity gain functions are obtained as the ratio between the sensitivity characteristics of coated and bare LPGs. They are reported for different mode orders and overlay thickness values in Fig. 3.23. 

The situation is dramatically different for the RW configuration (ns = 1.2, nP = 1.575), for which the cover penetration depth can be varied between 100 nm and infinity for all the modes, with significantly improved cover index sensitivities (see Fig. 15.6b)9 15. For the CW configuration, the maximum obtainable sensitivity decreases with increasing mode orders compared to the zeroth-order modes. Con-trarily, the RW configuration offers the possibility to use higher order modes for... 

Edman Degradation. This technique requires more material than MS-based sequencing and its sensitivity decreases with the number of amino acids detected. The use of Edman degradation sometimes allows determination of those N-terminal amino acids that were not detected during MS sequencing. 

You can vary the composition of the eluent (mobile phase) in HPLC a lot more than in GC, so there s not really much correspondence. Substitute nitrogen for helium in GC and usually the sensitivity decreases, but the retention times stay the same. Changing the mobile phases—the gases—in GC doesn t have a very big effect on the separation or retention time. 

When the concentration of the azide exceeds 30 wt%, sensitivity decreases (Figure 2) and the contrast becomes worse (Figure 3). This is due to the increase of the optical density of the resist. Large optical density prevents the light from penetrating into the resist (3,11). Also, the resist thickness remainig after development is maximum at the 30 wt% azide concentration (Figure 2). From these results, it was concluded that the azide-styrene resin resist which contains 30 wt%... 

The violence of the explosion when the ethyl ester was heated at 80°C was not so great as reported previously. The propyl and butyl esters explode if heated rapidly, but decompose smoothly if heated gradually [1], Dialkyl hyponitrites with alkyl groups below C(, are shock-sensitive [2], The shock-sensitivity decreases with increasing MW, and it was not possible to detonate esters above C6. The aryl esters were insensitive and the alkyl esters became so on dilution with solvent [3], Individually indexed compounds are ... 

Reddy, G. O. et al Thermochim. Acta, 1983, 66, 231-244 Of the four salts with Hg2+, Pb2+, Ba2+ and 2Na+, the thermal sensitivity and impact-, friction- and static spark-sensitivities decreased in that order, as expected. These and other entries are ... 

For a nuclide of mass M, abundance sensitivity is the ratio between the signal at mass M+ arising from the same species to the signal at mass M. Off-peak ions are present because of collisions behind the magnetic filter, of reflections on the tube wall, or of space-charge effects. As a result of the collisions, the energy of these ions is different from the energy of the main beam. They alter the apparent peak baseline in a continuous way. Abundance sensitivity decreases with the mean free path of ions, i.e., when pressure near the collector assembly... 

In general, the electrochemical performance of carbon materials is basically determined by the electronic properties, and given its interfacial character, by the surface structure and surface chemistry (i.e. surface terminal functional groups or adsorption processes) [1,2]. Such features will affect the electrode kinetics, potential limits, background currents and the interaction with molecules in solution [2]. From the point of view of electroanalysis, the remarkable benefits of CNT-modified electrodes have been widely praised, including low detection limits, increased sensitivity, decreased overpotentials and resistance to surface fouling [5, 9, 11, 17]. 

Chemical modification of proteins — This can lead to denaturation and aggregation and reduce both specificity (increased nonspecific binding) and sensitivity (decreased ligand affinity). 

Fig. 7.19 shows the burning rates of AP-HTPB composite propellants at 243 K and 343 K. The propellants are composed of bimodal fine or coarse AP particles. The chemical composihons of the propellants are shown in Table 7.2. The burning rates of both propellants are seen to increase linearly in an In r versus In p plot in the pressure range 1.5-5 MPa, and also increase with increasing initial propellant temperature at constant pressure.Ii l The burning rate increases and the temperature sensitivity decreases with decreasing AP particle size. 

The relationship between temperature sensitivity and burning rate is shown in Fig. 7.21 as a function of AP particle size and burning rate catalyst (BEFP).li31 The temperature sensitivity decreases when the burning rate is increased, either by the addition of fine AP particles or by the addition of BEFP. The results of the temperature sensitivity analysis shown in Fig. 7.22 indicate that the temperature sensitivity of the condensed phase, W, defined in Eq. (3.80), is higher than that of the gas phase, 5), defined in Eq. (3.79). In addition, 4> becomes very small when the propel-... 

The results of the calculations are shown in Fig. 8.4. The assumed values for the physical constants and reaction kinetics are listed in Ref [1]. The burning rate increases with increasing pressure, and also increases with increasing concentration and decreasing particle size of the AP particles. These calculated results compare favorably with the experimental results shown in Fig. 8.4. The calculated burning surface temperature of the DB matrix varies from 621 K at 1 MPa to 673 K at 8 MPa. The temperature sensitivity decreases with increasing pressure (a = 0.0056 K at 8 MPa).[i]... 

The physical handling of insect larvae is a common practice in rearing programs. In Table 1, neonates that were picked up with a paint brush shortly after eclosion grew more slowly and weighed less than undisturbed larvae 10 days later. This sensitivity decreases with age but still can be demonstrated many hours following emergence. 

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