Migration lateral

Passive perimeter gas control systems are designed to alter the path of contaminant flow through the use of trenches or wells, and typically include synthetic flexible membrane liners (FMLs) and/or natural clays as containment materials. The membrane is held in place by a backfilled trench, the depth of which is determined by the distance to a limiting structure, such as groundwater or bedrock. A permeable trench installation functions to direct lateral migration to the surface, where the gases can be vented (if acceptable) or collected and conveyed to a treatment system (Figure 10a and 10b). 

Photostabilizers, regardless of their mechanism of action, have been added as low molecular weight materials at some point in processing. Subsequently, these stabilizers are often lost in further processing due to their volatility or else later migrate to the surface and evaporate. One method which avoids this modifies the polymer to include the quencher as an additional monomer in the polymerization. This paper will describe some recent efforts in our laboratory to pursue this latter approach in the stabilization of poly(ethylene terephthalate). 

Lateral migration of oil pollutants depends on the relief of the site where oil leakage took place. The distance of oil migration is determined by a combination of soil and ground characteristics, or in other words, by soil structure in the path of oil migration. 

Green, G and Belfort, G. Desalination 35 (1980) 129. Fouling of ultrafiltration membranes lateral migration and particle trajectory model. 

Aliena, F. W. and Belfort, G. Chem. Eng. Sci. 39 (1984) 343. Lateral migration of spherical particles in porous flow channels application to membrane filtration. 

Resolution >2 (Rs = 2(tM2 - tM1)/(W2 + Wj), where tM1 and tM2 are the migration times of the two peaks being measured, and Wj and W2 are then-peak widths, respectively. Units are all in minutes. Note that the values of the later migrating peak are entered first. 

Mason and co-workers (B8, F3, Gll, M5, T15) have shown that Eqs. (10-32) to (10-35) can also be applied to disks and cylinders provided that one uses an apparent value of , calculated from Eq. (10-36) and the observed Bretherton (B15) considered more general shapes and proved that most bodies of revolution, except for some extreme shapes, show periodic rotation with no lateral migration (i.e., no lift) provided that inertia terms are neglected. In reality all these particles migrate in the direction of positive lift (see Chapter 9). For a useful extended review on particle motion in shear fields, see Goldsmith and Mason (G12). 

The limiting factors for successful soil mixing treatment include the presence of boulders and subsurface utilities such as underground wires or piping. Depth to the water table may adversely impact the vapor extraction components effectiveness because vapor phase off-gas systems cannot process liquid streams. The vendor claims that depth to the water table may also influence lateral migration of processing gases. 

Stiiwe K, Hintermiiller M (2000) Topography and isotherms revisited The influence of laterally migrating drainage divides. Earth Planet Sci Lett 184 287-303... 

Fraction collection of fragments from a 100-bp DNA ladder was also achieved in a PDMS chip [664] or a glass chip. In the latter example, a small reversed field was maintained in the separation column to halt or slow down later migrating DNA in order to assist collection of a DNA fraction [665]. In one report, a single peak from the IEF separation channel has been isolated and transferred to a subsequent channel by means of microfluidic valve control [449],... 

Regression lateral migration of the shoreline away from the center of a land mass which is usually a continental interior. 

Coke burning recovers metal sites first. Coke on support can later migrate to metal sites.72 ... 

Sample to show extent of lateral migration around edge of polymer if it escapes vessel... 

It has been demonstrated that phosphorylation of LHC causes the detachment of a fraction of it from PS II and its lateral migration in the membrane to become incorporated into PS I [134-136]. It has indeed been shown that the fluorescence quenching caused by LHC phosphorylation is qualitatively different from spillover, because only LHC is quenched, not PS II [136], and Fq as well as are quenched [136,137]. The phosphorylation of LHC and/or of other thylakoid polypeptides may have more complex effects, and their interactions are far from being understood. It has been reported that protein phosphorylation enhances PS I-de-pendent cyclic photophosphorylation even under light saturation conditions [133], which could not be explained merely on the basis of PS I antenna enlargement. 

After an initial upward migration of the hydrocarbons as induced by other hydrocarbon migration mechanisms prevailing at greater depths (e.g. buoyancy relict or actual conditions of burial-induced flow) or after initial lateral migration from e.g. a subsiding part of the basin ... 

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