Separation stress

Their q-values, either calculated from the experimental conditions or chosen for best fit, and their corresponding relaxation rate constants, obtained from separate stress-jump experiments, are listed in Table III. 

Adhesion The tendency of a material to bond to another substance or material when under a separating stress. 

Separation stress nonassertivenes Anxiety disorders Antidepressants, benzodiazepines... 

The repetitive involvement in apparently aversive or abusive relationships (sometimes called the repetition compulsion) may be related to hypersensitivity of the separation-stress center in the brain (see the discussion in chapter 7), which has been shown to respond favorably to treatment with antidepressants, especially MAO inhibitors. 

Smith, K.K., Dharmaratne, H.R., Feltenstein, M.W., Broom, S.L., Roach, J.T., Nanayakkara, N.P., etal. (2001) Anxiolytic effects of kava extract and kavalactones in the chick social separation-stress paradigm. Psychopharmacology, 155, 86—90. 

Figure 16.9 Conditions for simple proportionality of stress and composition as in eqn. (15.2). (a) Concentration profiles in equilibrium (full lines) and when the interface is moving (broken lines), (b) A stress profile compatible with the composition profile in phase g and a separate stress profile compatible with the composition profile in phase h these two are not compatible with each other, (c) The stress profiles can be made compatible at the interface if their remote values are adjusted.

The horizontal cut separates stress-driven effects below from composition-driven effects above. It is in fact the traditional division between mechanics and chemistry enormous amounts of science fall clearly above the cut or clearly below it and cause no confusion at all. This cut was used as a guide in the early chapters, especially in the flow diagram or organization chart. Figure 8.1. 

Once a satisfactory model is developed, separate stress-rupture (confirmatory), experiments will be performed to examine the model s predictive capability. 

To describe the creep behaviour of glassy or tough polymers where the creep strains involved are small ( 5% say), as distinct from elastomers where the deformations are large ( 100% say), separable stress and time functions have been proposed. 

Xia H, Song M, Zhang Z and Richardson M (2006) Microphase separation, stress relaxation, and creep behavior of polyurethane nauocomposites, J Appl Polym Sci 103 2992-3002. 

Early studies of the failure process in glassy polymers, crazing, placed emphasis on the idea that one could separate stress effects frail strain effects by taking advantage of the face that even in the glassy state the mecheuiical response was strongly time dependent. Further studies in the area of variable rate impact... 

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