Operating conditions/ranges

The operating conditions range from an excitation wavelength of 360-365 nm and an emission wavelength 425-435 nm. The intensity of aflatoxin fluorescence depends strongly on the injected solvent, with a higher response if the sample is injected in the mobile phase (usually a ternary mixture of methanol/acetonitrile/water) and a lower one if injected in the methanol or acetonitrile only. 

As an example, let us now examine the specific case of particle motion at 25°C and atmosphere pressure. The related physical properties are dp = 0.001 m, pp = 1000 kg-nf p, = 1.145 kg-in. and pg = 1.798 Pa s. The calculated values for the terminal velocity and the operational condition ranges are given in Table 2.2. An important conclusion that can be drawn from the data listed in the fourth column of Table 2.2 is that the Stokes regime cannot exist in co-axial horizontal impinging streams while other regimes are applicable in this kind of impinging stream. 

The rating charts of a cooling tower relate operating conditions (range, approach and wet bulb temperature) to the water loading at which the tower will meet the various conditions. A water loading is expressed in terms of gpm per square foot. The area refers to the plan area of the filled volume of the tower. Water loading is more... 

In this chapter the design criteria implemented have been presented, together with the operating conditions ranges analyzed. A catalytic foam has been inserted in the reformers in order to increase the effectiveness of the heat transfer and to reduce pressure drop, and four types of Pd-based hydrogen selective membranes are tested and compared. 

TABLE 20.6-1 Separator Dimension and Operation Condition Ranges... 

OPERATING CONDITIONS. Ranges of liquid-hydrogen flow rates, test-section inlet pressures and electrical power inputs to the test section were investigated. 

The scope of the EOPs is to provide the procedural guidance for operators to deal with accident conditions up to the point of core damage. Thus the EOPs generally provide actions for a wide spectrum of operating conditions, ranging from abnormal operation up to accidents far exceeding the design basis of the nuclear power plant. 

One fundamental choice is the selection of a packed or capillary column. Packed columns generally tolerate misuse better than do capillary columns they certainly are much less expensive, and they require simpler instrumentation to enable them to deliver all of their potential resolution. However, they do not cover as wide application or operating condition ranges, nor do they deliver the potential for speed of analysis with capillary columns. In certain areas, such as instrumentation for operation outside a controlled lab environment, the higher robustness of packed columns often makes them the primary choice. Some applications, such as many gas analyses, are frequently better served by packed columns with application-specific phases and supports, such as porous polymers or molecular sieves, although great strides have been made toward suitable capillary columns since the early 1990s. 

By selection of appropriate operating conditions, the proportion of coproduced methanol and dimethyl ether can be varied over a wide range. The process is attractive as a method to enhance production of Hquid fuel from CO-rich synthesis gas. Dimethyl ether potentially can be used as a starting material for oxygenated hydrocarbons such as methyl acetate and higher ethers suitable for use in reformulated gasoline. Also, dimethyl ether is an intermediate in the Mobil MTG process for production of gasoline from methanol. 

Economic evaluations of algal production indicate that production costs vary from 0.15 to 4.00/kg of algal product, depending on type of bioreactor, culture technique, and operating conditions (51). For systems with controlled agitation and carbonation, including raceways and tubular reactors, production costs ate estimated to range from 2.00 to 4.00/kg. 

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