The sweet zone

The system s AHp should tall within the pump s primary or. secondary sweet zone. At the beginning of the operation, with the cold reactor vessel, the pump operates to the right of the BEP but within the. sweet zone, and as the reactor ve.s.sel is heated, the pump migrates on its curve toward the left, crossing the BEP, to the other extreme of its sweet zone. When the reaction is completed and the tank cools, the pump... 

As mentioned earlier, the system curve with the clean and dirty filters should coincide within the sweet zone of the pump on its curve. (Figure 8-20 and Figure 8-21). 

You should install pressure sensors that transmit a message to shut-off the pump, sound an alarm, or indicate to the operator that the moment to change the filter has arrived. With a new filter installed, the pump begins operating again to the right of the BEP within the sweet zone and slowly over time proceeds moving toward the other end of the sweet zone. 

Although the pump was being run at 25% of the BEP (Best Efficiency Point), it was designed for this type of service. This eliminated improper operation or running outside of the Sweet Zone. 

T he pump will run to the right of its BKP within its sweet zone with the new filter, and slowly over time, move toward the left erossing the BHP as the filter sereen clogs (Figure 8-21 and Figure 8-22). 

Fig. 3A, B The major constituent of the essential oils 1-6 is detectable VS reagent as a red-violet to brown-violet zone at R, 0.9-0.95. In the essentia] oil of anise (1), staranise (2), bitter fennel (3) or. sweet fennel (4) it is anethole (Tl) with smaO amounts of the isomer methylchavicol, while basil (5) has predominantly methylchavicol which has the same R, value as anethole. The prominent zone of sassafras oil (6) is safrole (T2). Anethole (Tl) and safrole (T2) can be separated in the solvent toluene (see Fig. 4C), where safrole then shows a higher R, value.

The blue zones in the R, range 0.1-0.4 of the oils 1-6 are terpene alcohols (e.g. linalool at Rf 0.4) at a very low concentration in the samples 1-2, slightly higher in bitter fennel (3) and sweet fennel (4), while basil (5) shows three inten.sive blue terpene alcohols with linalool as a major compound. In basil oils, linalool can be the predominant compound with very little methylchavicol (chemo- or geotype). A red-violet zone at R, 0.5, as in samples 2-5, can occur (e.g. epoxidihydrocaryophyUene). 

Fig. 2A In a Steviae folium BuOll extract (.1) the. sweet-tasting diterpene glycosides are found as four grey zones in the R, range 0.1-0.3 with rebaudioside A (T2) at R, 0.2 and stevioside (Tl) at R, 0.3. The three weak grey zones in the upper R, range 0,75 up to the. solvent front are due to less polar diterpene glycosides and aglycones.

Migration forms of the same element differ primarily in their attitude to natural solvents. Polar compoxmds well dissolve in water, nonpolar - better in nonpolar solvents, volatile and gas - in the subsurface gas. Preferences of the migration forms towards different subsurface transporters may be evaluated by their distribution in various media imder identical thermodynamic conditions. Let us assume that in close to normal, for instance in the aeration zone, component i has to distribute between sweet-water, underground gas at a pressure 1 bar and nonpolar hydrophobic liquid, which have equal volumes, i.e., in equation (2.336) = 5 = 1. 

You can see in Figure 7-9 that the pump should run at or near zone A , its best efficiency point, the BEP. This is the preferred sweet or happy zone. The pump should be specified and operated in this zone. 

Cultivated plums can be sweet, melting dessert fruits or tangy, firm cooking fruits, in shades from yellow to blue to nearly black. In all but the most extreme climates, there is a plum tree for every yard. Wild American plums grow in Zones 4-8, European and damson plums thrive in Zones 5-9, and Japanese plums do best in Zones 6-10. Hybrids between American and Japanese plums combine the cold hardiness of the former with the fruit quality of the latter. 

The morning glories constitute a tropical and subtropical family with some extension into temperate zones. The familiar sweet potato is a member oflhis family, which includes many ornamentals. Alkaloids are found in the family, some in the seeds of morning... 

Vin Santo is made by starting with the choice of the best grapes (scelti) of the white varieties that are grown in each zone. As a "sweet wine that is little characterized by terpene aromas, the making of Vin Santo can use non-aromatic or semi-aromatic grape varieties. Not all of the "non-varietal" grapes, however, are suitable for producing Vin Santo,... 

B Fenchone, if present in a lower concentration, can be detected by the PMA/PM reagent only. The dark blue-coloured zone of fenchone (T4) is seen in the sample of bitter fennel (3) (12%-22% fenchone), whereas a weak whitish zone is detected in sweet fennel (4) (0.4%-0.8% fenchone). Fenchone is absent in ani.se (1) or star anise. 

Figure 15.17 Representative Images of inhibitory zones of sweet potato starch Aims. In the images the authors indicated the percentage of chitosan included (%C), the presence of potassium sorbate (K), and the type of medium solid [SM) or semisolid (SSM). Reprinted from Shen et al., 2010, with permission from Elsevier.

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