Of opaquer

Whereas ATR spectroscopy is most commonly applied in obtaining infrared absorption spectra of opaque materials, reflection-absorption infrared spectroscopy (RAIRS) is usually used to obtain the absorption spectrum of a thin layer of material adsorbed on an opaque metal surface. An example would be carbon monoxide adsorbed on copper. The metal surface may be either in the form of a film or, of greaf imporfance in fhe sfudy of cafalysfs, one of fhe parficular crysfal faces of fhe mefal. 

Pa.ste Shampoos. These shampoos represent thickened versions of opaque shampoos. They have a somewhat firm, cream-like consistency and are packaged in jars and/or tubes. Thickening of these systems is usually accompHshed through additions of stearate soaps and electrolytes. 

Commercially available photon tunneling microscopes have a lateral resolution of 160 nm but subnanometer vertical resolution. The nondestmctive, instantaneous 3-D viewing of a surface (no scanning) yields real-time imaging as one traverses a given sample. The sample must be a dielectric, but transparent polymer tepHcas of opaque samples can be studied. 

ASTM D1729, Practice for Visual Evaluation of Color Differences of Opaque Materials, Vol. 6.01, ASTM, Philadelphia, Pa., 1989. 

Thermal conductivity at 25°C is 1.38 W/(m-K). The thermal conductivity of opaque siUca is 20% lower than that of clear vitreous siUca. 

FIG. 19-12 Optical separation of mixed glasses separation of opaques from glasses. Coutiesy Gunson s Sotiex Ltd.)... 

Amount, tenths, one coded alphanumeric character Type, one coded alphanumeric character Height, hundreds of feet, three alphanumeric characters Amount of opaque cloud cover, tenths, one alphanumeric character"... 

As an example of a more speeifie applieation, Figure 2 illustrates a metallo-graph—a light microscope set up for the characterization of opaque samples. Figure 3 illustrates a research-grade microscope made specifically for materials science, i.e., for optically characterizing all transparent and translucent materials. 

Caseins are used as food colorants because they make a nice base of opaque white, which can then be tinted with other colors as required. 

Alkanesulfonates are widely used as an internal antistatic agent for poly(vinyl chloride) (PVC). Since alkanesulfonates cause hazing of unplasticized PVC in the normally used quantities of 1.0 to 1.5 parts per hundred parts resin (phr), its main use is in the manufacture of opaque PVC-calendered film. To produce transparent unplasticized articles, the addition of alkanesulfonates should not exceed 0.3 phr. Figure 40 shows the antistatic effect of alkanesulfonates in PVC. 

Any formal models of the conduct of research work and success are often soft or fuzzy in nature, and so may be distrusted by those used to hard evidence. There is a particular distrust of opaque, black box solutions, and numerate managers rightly demand to see the detailed assumptions made in any decision analysis. The most controversial assumptions tend to be those about project future costs, chance of success, and potential value within drug... 

A zonal sequence of opaque minerals is also found. Pyrite is found in zones (1) and (2). Very tiny amounts of pyrrhotite coexisting with pyrite are found in zone (1). Magnetite is common in zone (3) but this mineral is thought to be original. 

The chemical compositions of opaque minerals (sphalerite, electrum) are different in two types of deposits. The FeS content of sphalerite from vein deposits of the Te-type is generally lower than that of the Se-type (Fig. 1.118). However, FeS content of sphalerite from massive deposits of the Te-type (Kobetsuzawa, Suzaki) is high, ranging from 1 to 7 mol%. The Ag content of electrum from the Se-type is higher than that from the Te-type (Fig. 1.119). 

From the mode of occurrence of opaque minerals it is considered that pyrrhotite and sphalerite were precipitated at an early-stage, gold, pyrite, marcasite, stibnite and cinnabar were precipitated at a late-stage, and arsenopyrite was precipitated throughout the mineralization period. 

MiUy, P. J., Toledo, R. T., Chen, J., and Kazem, B. (2007). Hydrodynamic cavitation to improve bulk fluid to surface mass transfer in a nonimmersed ultraviolet system for minimal processing of opaque and transparent fluid foods. /. Food Sci. 72, M407-M413. 

Eye Contact Speed in decontaminating the eyes are absolutely essential remove person from the liquid source flush the eyes immediately with water by tilting the head to the side, pulling the eyelids apart with the fingers and pouring water slowly into the eyes do not cover eyes with bandages but if necessary, protect eyes by means of dark of opaque goggles seek medical attention immediately. 

Issar, R. A. (1990), Atlas of Opaque and Ore Minerals in Their Associations, Open University, London. 

Analysts use reflected light microscopy to examine the surface of polymers. By changing the angle of illumination they can accentuate surface texture and other features of interest. Reflected light microscopy is well suited to the examination of opaque and pigmented samples. Polymer scientists make extensive use of reflected light microscopy when examining the fracture surfaces of failed samples. 

Contamination can be present not only as a surface deposit or a surface feature but can also be located within the bulk of a manufactured part. The selection of an appropriate series of analytical techniques, applied to failure, defect, and contamination analysis projects, is influenced by the location of the contamination or defect and the optical properties of the manufactured component. Microscopic analysis of opaque parts is limited to surface analysis... 

The sunblocks zinc oxide, titanium dioxide, and iron oxide are inorganic chemicals that are not absorbed into the skin. These substances consist of opaque particles that reflect both visible and ultraviolet light. In addition, zinc oxide blocks virtually the entire UVA and UVB spectrum and thus offers overall protection. The particulate nature of these sunblocks enhances their effectiveness at reflecting sunlight. The smaller the particle size, the greater the surface area available for reflection, and the more effective the sun protection offered by the formulation. 

The DECP model successfully explained the observed initial phase of the fully symmetric phonons in a number of opaque crystals [24]. The absence of the Eg mode was attributed to an exclusive coupling between the electrons photoexcited near the r point and the fully symmetric phonons. A recent density functional theory (DFT) calculation [23] demonstrated this exclusive coupling as the potential energy surface (Fig. 2.4). The minimum of the potential surface of the excited state shifted significantly along the trigonal (z) axis,... 

Watson, S.A. and Yahl, K.R. 1967. Comparision of wet-milling properties of opaque-2 high-lysine com and normal com. Cereal Chem. 44, 488-498. 

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