Comer effect

Intuitively, a T profile produces more localized fields than an inverse T profile, likewise an inverse trapezoidal profile does than a trapezoidal profile. This trend has been confirmed in the earlier reports. Consistent with the previous discussion on the effect of depth, higher localization seems to be correlated with isolation of LSP modes from propagating bulk SPs to some degree. The field enhancement near vertices has been explained by [23] as comer effects, which should be differentiated from edge effect of electromagnetic fields. 

With a rectangular microchannel not only the hydraulic diameter but also the channel shape will influence the velocity profile. This is because of the impact of the channel geometry on the EDL. Figure 5 shows the relationship between the aspect ratio (H/IV) and the volumetric flow rate for a fixed hydraulic diameter. As the ratio of H W approaches 1 1 (for a square channel), the flow rate decreases. This is because of the larger role that comer effects have on the development of the EDL and the velocity profile in square channels. 

The theoretical analysis and field practice show that gas emission rate from the gob is large, the gas drainage in the gob is a vital part of gas control, and the inner interlocked low tail laneway can drain the gas in the upper comer effectively. Meanwhile, in practice, the following problems should be paid attention to ... 

For an L-shaped molded part, its flanks come closer to each other because of the local shrinkage at the comer. This is called the comer effect. The inner warpage of box-shaped parts is also due to this corner effect. For a center-gated disk, if the inner shrinkage is larger than the outer one, the disk will twist, otherwise it will dome. These phenomena are called buckling. 

For warpage simulations using shell elements (Chap. 8), the thickness shrinkage is not involved in the stmctural analyses, and the spring forward effect must therefore be imposed. Figure 6.9 displays a predicted deflection of a box-like part (Bakharev et al. 2005). The concave warpage of the box is due to the comer effect. 

Society of Plastics Engineers Annual Technical Conference—ANTEC 2004(50) 621-625 Bakharev A, Zheng R, Fan Z, Costa FS, Jin X, Kennedy PK (2005) Comer effect in warpage simulation. Society of Plastics Engineers Annual Technical Conference—ANTEC ... 

Using a load factor of 1.7 and a factor of 1.15 to allow for yield-line comer effect, the equation... 

Since this reverse comer effect imbalance still deals with shear, it is important to understand the sensitivity of the filling imbalance to injection flow rate along with the sensitivity of different materials to these mold filling imbalances in a geometrically balanced runner. 

Figme 3 Percent imbalance of Reverse Comer Effect... 

Figure 4 2-Cavity Reverse Comer Effect Imbalance...

The variation of magnetic moment s comer gives the effect similar to their lifting. The sum of corners is to be proportional to ... 

In such cases basket anodes are frequently used. These have a relatively large surface and work at a low driving voltage due to their special construction. A cylinder of platinized titanium-expanded metal serves as the basket to which a titanium rod is welded. This serves as the current lead and carrier, and ends in a plastic foot that contains the cable lead and at the same time serves as the mounting plate. The expanded metal anode exhibits a very uniform anode current density distribution, even at large dimensions, in contrast to the plate anode. The reason is the many comers and edges of the metal that make the point effect only evident at the outer edges of the anode. 

Whilst the aliphatic nylons are generally classified as being impact resistant, they are affected by stress concentrators like sharp comers which may lead to brittle failures. Incorporation of mbbers which are not soluble in the nylons and hence form dispersions of rubber droplets in the polyamide matrix but which nevertheless can have some interaction between mbber and polyamide can be most effective. Materials described in the literature include the ethylene-propylene rubbers, ionomers (q.v.), polyurethanes, acrylates and methacrylates, ABS polymers and polyamides from dimer acid. 

Any material which contains a geometrical discontinuity will experience an increase in stress in the vicinity of the discontinuity. This stress concentration effect is caused by the re-distribution of the lines of force transmission through the material when they encounter the discontinuity. Causes of stress concentration include holes, notches, keyways, comers, etc as illustrated in Fig. 2.62. 

The main approximation of such one-dimensional corrections is that the tunnelling is assumed to occur along the MER This may be a reasonable assumption for reactions having either early or late (close to either reactant or product) transition states. For reactions where both bond breaking and formation are significant at the TS (as is usually the case), the dominant tunnel effect is comer cutting (Figure 16.5), i.e. the favoured... 

Fourth, molded-in metal should be avoided whenever alternate methods will accomplish the desired objective. If it is essential to incorporate such inserts, they should be shaped so that they will present no sharp inside comers to the plastic. The effect of the sharp edges of a metal insert would be the same as explained in the first point above, namely, brittleness and stress concentration can occur. The cross-section that surrounds a metal insert should be heavy enough that it will not crack upon cooling. A method of minimizing cracking around the insert is to heat the... 

The effect of small valence and large coordination number is further shown by the observation that silicon tetrahedra, which share comers only with aluminum octahedra, share edges with magnesium octahedra (in olivine, chondrodite, humite, clinohumite) and with zirconium polyhedra with coordination number eight (in zircon). 

Caron, G., Steyaert, G., Pagliara, A., Reymond, F., Grivori, P., Gaillard, P Garrupt, P. A., Avdeef, A., Comer, J., Box, K. J., Girault, H. H., Testa, B. Structure-lipophilidty relationships of neutral and protonated P-blockers. Part 1. Intra- and intermolecular effects in isotropic solvent systems. Hdv. Chim. Acta 1999, 82, 1211-1222. 

Comer S., Lac S., Curtis L., Carroll M. Effects of buprenorphine and naltrexone on reinstatement of cocaine-reinforced responding in rats. J. Pharmacol. Exp. Ther. 267 1470, 1993. 

Comer SD, Collins ED, Kleber HJD, Nuwayser ES, Kerrigan JH and Fischman MW (2002). Depot naltrexone Long-lasting antagonism of the effects of heroin in humans. Psychopharmacology, 159, 351-360. 

For the greatest effect on wooden structures, the mixture should be in a pile, never spread out in a thin layer. It should be placed beneath the target material, if possible, so the flames will spread upward. In a packing box or room, a comer is a good place to start the fire. 

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