Terms and Units

It is understood that, if the membrane permeability is in the units of moles/time, then the flow rate L is in moles per unit time per unit membrane area. (The other flow rates would also be based on membrane area.) In turn, the notation L may be replaced by the flux G, that is, the flow rate may be placed on an areal basis. 

If the units of permeability are in volume per unit time, then the flow rates are in volume per unit time, though adjustments or accommodations must be made for the pressure (and temperature). 

If the total permeate flow rate is given by V, say, the component flow rate can be designated as 

Membrane permeability is customarily based on pressure drop per unit membrane thickness. The overall permeability then becomes the permeability as per unit thickness divided by the thickness. Therefore, as the membrane thickness increases, the overall permeability decreases. 

As previously stated, the units commonly used for pointwise membrane permeability (or mobility) are 

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Error terms and units If data are presented quantitatively in the abstract, proper units and errors terms (when appropriate) should be included. 

Table 2.3 Selected chemical and physical properties of arsenic. See Table 2.4 for additional information on the elemental polymorphs of arsenic. See Appendix B and the text for explanations of some of the terms and units of measure.

Table 2.4 Physical and crystalline properties of naturally occurring elemental arsenic polymorphs at25°C and 1 bar pressure (Baur and Onishi, 1978 fide, 2007 Matsubara et al., 2001 O Neil et al., 2001). See the text and Appendix B for explanations of the terms and units of measure.

Throughout we use the following terms and units, unless noted otherwise ... 

Table 1. Definition of terms and units used in equations (l)-(4)...

Presenting a coherent general account of our present knowledge of marine production is not easy. It is further complicated by the lack of standardisation of terms and units. There are sevei different ways of measuring primary production and the accuracy of the measurements depends primarily on the sensitivity of the method. Secondary production is even more difficult to meeisure (Dunbar, 1975). Thus, to obtain a good estimate of primary production in seas and oceans the methods commonly used for its measurement must be treated first since their reliability determines the validity of the results. 

TABLE 31.1 Terms and Units Used to Describe Dielectric Behavior ... 

Included in the textbook are several appendixes that should be valuable to the student as well as to atomic spectroscopists. These include a compilation of frequently used spectroscopic terms and units, tables of sensitive... 

Some quantities, terms and units of measure of health physics... 

Comparative Terms and Units in UVA s Photon and High-Energy Radiation Chemistry Energy Deposition by Ionizing Radiation Sources of High-Energy... 

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