The storage time

Orthophosphate Hquid mixtures are ineffective as micronuttient carriers because of the formation of metal ammonium phosphates such as ZnNH PO. However, micronutrients are much more soluble in ammonium phosphate solutions in which a substantial proportion of the phosphoms is polyphosphate. The greater solubiHty results from the sequestering action of the polyphosphate. The amounts of Zn, Mn, Cu, and Fe soluble in base solution with 70% of its P as polyphosphate are 10 to 60 times their solubiHties in ammonium orthophosphate solution. When a mixture of several micronutrients is added to the same solution, the solubiHty of the individual metals is lowered significantly. In such mixtures the total micronuttient content should not exceed 3% and the storage time before precipitates appear may be much shorter than when only one micronuttient is present. 

As time progresses, charge is generated by photon currents, semiconductor dark currents, diffusion, depletion, surface, avalanche, and tunneling. The time required to fill the well by dark currents is the storage time, given by the following. 

Resorcinol will react rapidly with hydroxymethyl as well as free formaldehyde thus only a resin with low-to-nonexistent methylol will be stable in its presence. Such a resin is not likely to show good cure speed unless some sort of latent, protected methylene donor is present. This approach may be viable in a user s mill where the storage time after resorcinol addition is relatively short. If the resorcinol is dissolved, in-line mixing with the PF would be a reasonable approach. 

A small part of radon gas in the container was transfered into the ionization chamber (1.5 ). The radon concentration in the container was controlled by varying the storage time of radon in the bubbling bottle. 

Zinc oxide in storage will slowly absorb carbon dioxide and therefore cannot be regarded as an inert material. Old material may show different reactivity if the storage time exceeds 12 months, thus affecting cure characteristics of compounds. 

From the results it can be concluded that the decrease in dissolved organic carbon with storage time is always lowest when the samples come deep frozen deep freezing in a glass ampoule resulted in the lowest decline. Even under these conditions the storage time should be as low as possible. 

Figure 19 presents results of PCL examination of wines, grape skins, and grape pips. The very low antioxidant capacity of white wine is obviously related to the technology of its manufacturing it is prepared from pure juce without grape skins and pips, in contrast to red wine. The dependency of ACW on the storage time of red wine is depicted in Figure 20. White wine is stable in this sense.

Fig. 25 Transmission spectra of Pigment Red 170 in plasticized PVC in relation to the storage time (pigment concentration 0.01%, processing temperature 140°C). The curves are shifted relative to each other in the direction of transmission.

Fig. 58 Variation of the thixotropy of publication gavure printing inks containing 15% Pigment Yellow 12 with the storage time after dispersion.

Fig. 59 Influence of the dispersion temperature (left 15°C, right 50°C) and the storage time on the viscosity of sheet offset printing inks containing Pigment Yellow 13. Measurement temperature...

Fig. 1. LED pulse sequence for the measurement of stimulated echoes attenuated by diffusion. Typical values for delays and pulse widths are 5 ms for the gradient pulse widths tg, 2-3 ms for the recovery time tr, 0.1 s for the diffusion time td, and 5 ms for the storage time...

Figure 8.3a Storage to Initial Ratio of crushing strength (SIR(S)) of a-lactose monohydrate/tapioca starch tablets (20% w/w disintegrant) as a function of the storage time...

When one wishes to determine drug residues separately in yolk and egg white, it is also advisable to separate these compartments immediately after laying because of reported diffusion from yolk to egg white (20). As with urine samples, it is also necessary to buffer egg samples prior to analysis, because the pH of the egg white may vary between 7.6 and 9.4 depending on the storage time, although while yolk pH is always in the narrower range of 6.0-6.8 (19). 

In an analysis of the hazards of the alpha emitters from reactor operations it has been pointed out (25) that the most significant and hazardous species are plutonium, americium, curium, and neptunium. Plutonium is as hazardous as such fission products as ruthenium-106, cesium-137, cerium-144, and promethium-147, depending on the kind of fuel, the power of the reactor, the storage time of the waste, and whether it is released to the atmosphere or to water. If strontium-90 is removed... 

Fig. 17.2. Effect of the extraction medium (A, Polyclar SB-100 B, L-cysteine+ Amberlite CG-400 and C, L-cysteine) on the storage time and/or stability of the crude extract of sweet potato root.

Fig. 24.5. Storage stability studies. Percentage of initial activity of different glucose biosensors after the storage time, (a) Biosensors stored at RT (i.e. 25°C and dry), (b) Biosensors stored at 45°C (dry). For each period, three biosensors were tested. See text for details. Reprinted from Ref. [59] with permission from Elsevier.

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