Strength temperature dependence

Fig. 4.61. EPR-signal intensity versus magnetic field strength - temperature dependence of the EPR-active centres in Zerodur , created by electrons...

Bogomol, I., Nishimura, T., Nesterenko, Yu., Vasylkiv, O., Sakka, Y, Loboda, P. (2011). The Bending Strength Temperature Dependence of the Directionally Solidified Eutectic LaBg-ZrB2 Composite. Journal of Alloys and Compounds, 509(20), 6123-6129. doi 10.1016/j.jallcom.2011.02.176. 

Vossmeyer T et al 1994 CdS nanoolusters synthesis, oharaoterization, size dependent osoillator strength, temperature shift of the exitonio transition energy and reversible absorbanoe shift J. Phys. Chem. 98 7665... 

The electrons have a range of kinetic energies and are therefore at different temperatures. Depending on the strength of the applied electric field, some electrons in the swarm will have... 

Chemical Properties. The hydrolysis of PET is acid- or base-catalyzed and is highly temperature dependent and relatively rapid at polymer melt temperatures. Treatment for several weeks in 70°C water results in no significant fiber strength loss. However, at 100°C, approximately 20% of the PET tenacity is lost in one week and about 60% is lost in three weeks (47). In general, the hydrolysis and chemical resistance of copolyester materials is less than that for PET and depends on both the type and amount of comonomer. 

Second, most membrane materials adsorb proteins. Worse, the adsorption is membrane-material specific and is dependent on concentration, pH, ionic strength, temperature, and so on. Adsorption has two consequences it changes the membrane pore size because solutes are adsorbed near and in membrane pores and it removes protein from the permeate by adsorption in addition to that removed by sieving. Porter (op. cit., p. 160) gives an illustrative table for adsorption of Cytochrome C on materials used for UF membranes, with values ranging from 1 to 25 percent. Because of the adsorption effects, membranes are characterized only when clean. Fouling has a dramatic effect on membrane retention, as is explained in its own section below. 

In place of a complete evolutionary expression of normal softening and yield-strength recovery, Swegle and Grady [13] propose a temperature-dependent yield strength F(7]) in qualitative agreement with expected behavior... 

Many properties are temperature dependent. For example up to 100°C the yield stress drops with temperature at a faster rate than does the yield stress of polypropylene however, it retains some strength up to 160°C. 

In this expression / is the ionic strength of the. solution and A is a temperature-dependent constant (0.5112 mol 2 at... 

The physical nature of the sulfate complexes formed by plutonium(III) and plutonium(IV) in 1 M acid 2 M ionic strength perchlorate media has been inferred from thermodynamic parameters for complexation reactions and acid dependence of stability constants. The stability constants of 1 1 and 1 2 complexes were determined by solvent extraction and ion-exchange techniques, and the thermodynamic parameters calculated from the temperature dependence of the stability constants. The data are consistent with the formation of complexes of the form PuSOi,(n-2)+ for the 1 1 complexes of both plutonium(III) and plutonium(IV). The second HSO4 ligand appears to be added without deprotonation in both systems to form complexes of the form PuSOifHSOit(n"3) +. ... 

Euran Furan resins are thermosetting polymers derived from furfuryl alcohol and Furfural. The cure must be carefully controlled to avoid the formation of blisters and delaminations. To obtain optimum strength and corrosion resistance, furan composites must undergo a postcure schedule at carefully selected temperatures depending upon the laminate thickness. Equipment made with furan resins exhibits excellent resistance to solvents and combinations of acids and solvents. These resins are not for use in strong oxidizing environments. 

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