Seams, identification

FIGURE 26.20 Panel-seam identification scheme. (Adapted from U.S. EPA, Requirements for Hazardous Waste Landfill Design, Construction, and Closure, EPA/625/4-89/022, U.S. Environmental Protection Agency, Cincinnati, OH, August 1989.)... 

Panels must be properly identified to know where they lit in the facility. Figure 26.20 depicts the panel-seam identification scheme used for this purpose. This numbering scheme also assures a high-quality installation, since seam numbers are used to inventory all samples cut from the FML panel during installation. The samples cut from the panels are tested to ensure that the installation is of high quality. Quality assurance and the panel-seam identification scheme are discussed in more detail in Chapter 7. 

Colorants and opacifiers are typically used at low concentrations in the wet gel formulation. A wide range of colorants such as FD C and D C water-soluble dyes, certified lakes, pigments, and vegetable colors have been incorporated into Softgel shells alone or in combination to produce the desired color, tint, or hue for product identification. A general rule in color selection is that the color of the capsule shell should be similar to or darker than the fill material to reduce the contrast with the seams. 

Identification and correlation of petrologic benches within the coal seam by Johnson (69) provided a basis for detailed study of the minerals in the coal ( ). The variation of the minerals is distinctly correlated along the traverse (Figure 6). 

In summary, we have demonstrated (a class of) confluences that is intimately related to molecular symmetry. These confluences constitute a subspace of a symmetry-allowed or different symmetry portion of the seam of conical intersection. The symmetry-allowed conical intersection has been over the years the most commonly studied type of conical intersection. Thus the comparatively recent discovery confluences would indicate that they are a rare occurrence. However, very recent work indicates instead that their only recent identification may reflect the limited data on the multidimensional character of conical intersection seams in tetra atomic and larger molecules. ... 

Selection of the appropriate PPE is a complex process which should take into consideration a variety of factors. Key factors involved in this process are identification of the hazards, or suspected hazards their routes of potential hazard to employees (inhalation, skin absorption, ingestion, and eye or skin contact) and the performance of the PPE materials (and seams) in providing a barrier to... 

Next to PLM, IR spectroscopy (principally, micro-IR) makes up the most important family of techniques in fiber analysis. As with PLM, IR spectroscopy is minimally destructive or nondestruchve and is useful on even the smallest fiber fragments. Microspectrophotometry (MSP) probes the chemical identification of the synthetic fiber, colorants, and other treatments. MSP is indispensable in the comparative analysis of questioned and known fibers, the central task of most forensic fiber analysis cases. The caveat is that such comparisons require knowledge of typical inter- and intrasample variation. Consider, for example, a pair of blue jeans typically, fibers from along the seams and hems are worn compared with fibers to other portions of the garment. Also, the source from which a sample is obtained will clearly affect any visible spectra and color analysis. Along a single fiber, characteristics of a dye or colorant will vary as well. Such inherent variations must be factored into any conclusions drawn from a comparative analysis, be it of dye or chemical composition. 

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