Primary property

Particle characterization, that is, description of primary properties of powders in a particulate system, underlies all work in particle technology. Primary 

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Further work is needed to build a physical model that allows prediction of the concentration effect from the primary properties of the slurry or from a limited amount of slurry testing. 

In this appHcation, the primary property concern is asphalt absorption and retention. If the geotextile has poor retention capabiHties, then the necessary waterproofing caimotbe achieved. 

Built-Up Mica. When the primary property needed for a particular appHcation is insulation, budt-up mica made by binding layered mica spHttings together serves as a substitute for the more expensive sheet mica. The principal uses for built-up mica are segment plate, molding plate, flexible plate, heater plate, and tape (7). 

Boys and Cook refer to these properties as primary properties because their electronic contributions can be obtained directly from the electronic wavefunction As a matter of interest, they also classified the electronic energy as a primary property. It can t be calculated as the expectation value of a sum of true one-electron operators, but the Hartree-Fock operator is sometimes written as a sum of pseudo one-electron operators, which include the average effects of the other electrons. 

If we used perturbation theory to estimate the expansion coefficients c etc., then all the singly excited coefficients would be zero by Brillouin s theorem. This led authors to make statements that HF calculations of primary properties are correct to second order of perturbation theory , because substitution of the perturbed wavefunction into... 

In Chapter 16, we studied the so-called primary properties, which I defined as those that could be obtained by direct calculation from the electron density (or equivalently the wavefunction). We also touched on derivative or gradient properties. It is now time to mm our attention to those properties that measure the response of a system to an external field. In the language of Boys and Cook, these are the induced properties. 

In the sarcoplasm of smooth muscle cells there is a membrane bound compartment usually referred to as the SR by analogy with skeletal muscle. However, it is not at all clear that the interior of these membrane-bound regions are continuous as they are in skeletal muscle. The primary properties of this system seem to be quite similar to those of the endoplasmic reticulum of many other cell types. In general, calcium is concentrated into the membrane-bound reticulum and then released to initiate the characteristic action of the cell. 

The obvious similarity between the purine bases of DNA and pteridines, especially between guanosine and pterins, has encouraged extensive studies of the synthesis and properties of pteridine-containing nucleoside and nucleotides. Synthetic methods have naturally built upon established methods of nucleic acid synthesis. The primary property of use in applications of these compounds to DNA chemistry is fluorescence, which is very much greater for pteridines than for purines. 

Tg can be determined by studying the temperature dependence of a number of physical properties such as specific volume, refractive index, specific heat, etc. First-order transitions, such as the melting of crystals, give rise to an abrupt change or discontinuity in these properties. However, when a polymeric material undergoes a second-order transition, it is not the primary property (the volume), but its first derivative with respect to temperature, (the coefficient of expansion), which becomes discontinuous. This difference between a first and second-order transition is illustrated in Figure 10. 

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