Moderator, term defined

Most simply and generally defined, creep is time-dependent deformation under constant stress . Even though creep may occur at relatively moderate temperatures, most ceramics are intended for use at high temperatures, where they are ductile. For ceramics with low-temperature ductility, creep may occur at 0.5 T or even at lower temperatures. The term defined below, indicating homologous... 

We can therefore view the totality of problems originating from the theory of the rotational and vibrational states of a molecule as being satisfactorily solved. The problem of a complete quantitative control of the molecular problem from the theoretical point of view is therefore dependent on the calculation of the electronic terms with sufficient accuracy. For each state of the molecule these terms define a potential energy, and as a matter of fact we should know the complete form of this potential curve, even for infinite distance between the two atoms. In most cases we know the decay products, either from experimental data or from theoretical considerations, so that in general only the calculation of the small region in the neighbourhood of the minimum is necessary. For such small or moderate distances between the nuclei the method described here, which starts from the two-centre problem, is especially suitable. 

The reduced stress is defined as the force per cross-sectional area of the undeformed sample, divided by the term X-X- with X being the relative elongation L/L0. With undiluted rubber, this is not found experimentally. In most cases, however, the elastic behaviour in a moderate elongation range is satisfactorily described fcy the empirical Mooney-Rivlin equation, which predicts a linear dependence of on reciprocal elongation X- (32-34)... 

The term diversity-oriented synthesis (DOS) is relatively new and, as mentioned above, is usually defined as the synthesis of complex, natural product-like molecules using a combinatorial approach and employing the full palette of modern organic reactions. It may be a subject of discussion what exactly qualifies a molecule as being natural product-like [4], and in most cases the similarity to an actual natural product seems reciprocal to the number of synthesized compounds. However, even in less complex cases, the products may be highly substituted polycyclic structures with defined stereochemistry, reminiscent of natural products [19, 20]. In these cases, a moderately complex backbone structure is subsequently modified with a well-established set of selective reactions to introduce diversity. 

This definition of x and y is more realistic at low and moderate salt concentrations and is in agreement with that of Sada and Morisue (17). Broul and Hala also assumed complete salt dissociation. The assumption of full dissociation of the salt may not be entirely valid at high salt concentrations, especially where the concentration of the nonaqueous solvent is also high. However, even in those instances where the assumption of full dissociation of the salt may be invalid, it appears to describe the system better than ignoring salt ionization completely. The terms x/ and y/ are referred to hereafter as ionic mole fraction and ionic activity coefficient, respectively. These should not be confused with the mean ionic terms used by Hala which are also based on complete salt dissociation, but are defined differently. No convergence problems were encountered when the ionic quantities were employed. 

Although the advice is given mainly for the description of risk assessment results, it holds completely for exposure assessment, since the quantitative input for risk assessment is exposure assessment and uncertainty analysis. Since any description of the resulting exposure distribution(s) in terms such as very low , low , fair , moderate , high or extreme includes an evaluation, it must be defined and justified (EnHealth Council, 2004). Those communicating the results of an exposure assessment frequently use comparative reporting schemes, such as the 50%/majority/. .. /95% of data/measurements/individuals show exposure values/estimates/measurements lower than the tolerable daily intake... 

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