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Conditioning, penetrant induced

Solutions are developed for the pore pressure fields that develop around penetrometers either advanced at constant or decelerating rate and under partially-drained flow conditions. The maximum pore pressure, recorded at the penetrometer is suggested as indicative of the permeability of the surrounding soil, since the peak-pressure is conditioned by the ability for fluids to escape. This full suite of solutions promotes a consistent framework to understand the processes operating during penetrometer penetration and arrest, and to enable the conventional sounding indices inclusive of tip resistance, Q friction factor, and pore pressure ratio, to be related to penetration-induced pore pressures, and therefore to permeability. [Pg.482]

It follows that the ammonia molecules easily go into the PVA fibers. It is reasonable because one of our previous studies indicated that sihca ohgomers derived from hydrolysis of TEOS under acidic conditions penetrated into the e-spun PVA fibers, but not the colloidal particles from the Stober and Fink system . Since SBF is supersaturated with respect to apatite precipitation, increase in the concentration of calcium or orthophosphate ions may stimulate it. However, sample PCa5P3 GS would not induce the Ca-P deposition as confirmed by the XRD for PCa5P3 GS in Fig. 2. Thus, once those calcium and phosphate ions form DCPD, SBF is unable to decompose it and convert to apatite. [Pg.36]

Penetrant-Induced Effects. History-dependent properties of glassy polymers are well documented in terms of thermal (113,114) and mechanical U15) properties. Studies have related excess enthalpy changes measured by differential scanning calorimetry to changes in small-molecule sorption (116,117). Many studies have reported penetrant-induced history-dependent (or conditioning) effects for gas and vapor sorption and transport properties in glassy... [Pg.1329]

The irons are most useful in environments containing a plentiful supply of oxygen or oxidising agents anaerobic or reducing conditions may lead to rapid corrosion. Physical effects such as abrasion or sudden dimensional changes induced by temperature fluctuations may rupture the film and allow corrosion to take place. The iron will also be subject to corrosion by solutions containing anions, such as those of the halides, which can penetrate surface films relatively readily. [Pg.614]

Analysis of Table II shows discrepancies in the hardness and stress behavior of a-C(N) H films. Although all the works reported a clear stress reduction upon nitrogen incorporation, the hardness sometimes is quoted as almost constant, or on the other hand clearly decreasing. In addition to the possible effect of different deposition methods and conditions, it can be easily seen that the differences in hardness testing methods are the major source for discrepancies. Constant hardness behavior is only reported with the use microindentation methods, like Vickers and Knoop microhardness. On the other hand, the use of low-load nanoindentation methods always led to a nitrogen-induced decrease in hardness. This is basically the consequence of two factors. The first one is the higher penetration... [Pg.263]

Retrobulbar hemorrhages During the administration of botulinum toxin type A for the treatment of strabismus, retrobulbar hemorrhages sufficient to compromise retinal circulation have occurred from needle penetrations into the orbit. It is recommended that appropriate instruments to decompress the orbit be accessible. Ocular (globe) penetrations by needles have also occurred. An ophthalmoscope to diagnose this condition should be available. Inducing paralysis in 1 or more extraocular P.788... [Pg.1344]

Diarrhea Diphenoxylate may prolong or aggravate diarrhea associated with organisms that penetrate intestinal mucosa (ie, toxigenic Escherichia coli, Salmonella, Shigella) or in pseudomembranous enterocolitis associated with broad-spectrum antibiotics. Do not use diphenoxylate in these conditions. In some patients with acute ulcerative colitis, diphenoxylate may induce toxic megacolon. Fluid/Electrolyte balance Dehydration, particularly in younger children, may... [Pg.1417]


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Conditioning, penetrant induced glassy polymers

Polymer penetrant induced conditioning

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