Return to Origin

The elasticity of a fiber describes its abiUty to return to original dimensions upon release of a deforming stress, and is quantitatively described by the stress or tenacity at the yield point. The final fiber quaUty factor is its toughness, which describes its abiUty to absorb work. Toughness may be quantitatively designated by the work required to mpture the fiber, which may be evaluated from the area under the total stress-strain curve. The usual textile unit for this property is mass pet unit linear density. The toughness index, defined as one-half the product of the stress and strain at break also in units of mass pet unit linear density, is frequentiy used as an approximation of the work required to mpture a fiber. The stress-strain curves of some typical textile fibers ate shown in Figure 5. 

Most extmded latex fibers are double covered with hard yams in order to overcome deficiencies of the bare threads such as abrasiveness, color, low power, and lack of dyeabiUty. During covering, the elastic thread is wrapped under stretch which prevents its return to original length when the stretch force is removed thus the fiber operates farther on the stress—strain curve to take advantage of its higher elastic power. Covered mbber fibers are commonly found in narrow fabrics, braids, surgical hosiery, and strip lace. 

Having developed a self-consistent treatment of the structure and interfacial energy of the Lennard-Jones droplet in a finite volume which avoids the usual assumptions by which homogeneous nucleation theory is implementedf we return to original question and examine how this new information alters the physical picture of nucleation. It is common to apply the analog of Equation 6 for an isothermal-isobaric ensemble,... 

Figure 9.18. Graph illustrating that once CO2 enters the atmosphere because of human activities, the return to original conditions takes a long time, regardless of whether or not CaCC>3 minerals are dissolved. (After Bacastrow and Keeling, 1979.)...

After 50 min, stop the pump, clean out all flasks and lines, and return to original conditions. To do this fill flask A with water. Prime the pump and let the system run at 2.0 mL/min with the injector handle in the inject position. Watch for the UV baseline to reestablish its initial position. 

Use Variable-tint prescription lenses that darken in sunlight and return to original clearness indoors (85% light transmission when clear, 45% in sunlight). 

The contrasting structure of the plates and the separators is also relevant to the functioning of the battery. For example, the capillary pressures dictate that electrolyte fills the plates preferentially. This preferential filling appears to be the ideal situation since it can best support the electrochemical reaction, i.e., it leaves the separator partially saturated so that movement of electrolyte can provide pathways for gas transport. If, however, the overall saturation is too low or there is excessive loss of water, the separator will dry out and give rise to an increase in the internal resistance of the battery and the possibility of thermal runaway. An increase in internal resistance, and consequent low service-life, can also result if the compression between separators and battery plates relaxes over a period of time. Overcompression may cause fibres to fracture with a loss of resilience, i.e., the separators lose the ability to return to original thickness after a high pressure is applied and... 

Mobile phase Gradient. A 0.1% trifluoroacetic acid in water, B 0.1% trifluoroacetic acid in 40% MeCN. 16% B for 2 min then to 50% B over 10 min then to 100% B over 2 min, after 7 min return to original conditions over 2 min. 

Storage Store away from excessive cold and hot temps. material will become vise, then solid temps, below freezing, but will return to original state upon warming Drewsperse 460 [Ashland/Drew Ind. Div.]... 

When the molecule exceeds the energy barrier, it does not return to original state. 

Allow to develop to 3 d, and screen for defects in organogenesis if a diploid screen is being employed. Collect embryos for structural stains at appropriate stages. If no phenotype has been detected at any stages, pairs or females should be returned to original tanks in diploid screens, or to a separate tank in haploid-or gynoge-netic-based screens. 

Decreased skin turgor (i.e., when the skin is pinched, it will reveal a slow return to original position)... 

Mobile phase MeCN 10 mM pH 4 sodium acetate buffer 25 75 for 10 min, DMSO for 8 min, return to original mobile phase... 

Resilience/Hysteresis - Resilience is essentially a measure of rubber elasticity - the characteristic ability to quickly return to original shape following deformation. Unfilled elastomers are at their peak resilience because there is no obstacle to elastomer chain extension and contraction (return to randomness). The introduction of a filler creates such an obstacle in proportion to the strength of the particle-polymer interaction. Resilience is therefore generally in inverse proportion to filler loading and reinforcement. 

---