Geometric specificity

Solvent effects upon the chemical shifts of 1-substituted adamantanes are also highly specific 15°). Aromatic solvents, especially benzene, give rise to significant solvent shifts of all resonances to a higher field. The / hydrogens, which are closest to the substituent, are affected least, however. The manner in which these geometrically specific effects are produced is not clear. No evidence for the existence of thermodynamic 1 1 complexes is found. Apparently, specific solvent ordering results from an interaction of the solvent with the dipole moment of the solute 1S4). 

Thus, the characteristics that were at first thought to be important in geometrically specific polymerization of dienes turned out to be of relatively little commercial consequence. The irony of this situation is apparent now that the technology of these processes and products has become mature and has settled into a proper role. 

D. C. Rich, Geometric Specifications and Tolerances for Color Measurement, CSIR, Pretoria, South Africa, September 1997. 

The method of estimation of physical surface area for each model is included as footnote 1 in Table III. Some models (i, 2, 22, 102) used generic geometric considerations. The surface area of a smooth parallel fracture, A/V, is assumed proportional to 2/w, the fracture width, and for close packed spheres of a given diameter, A/V approximates 17.10/3. An increase in geometric specificity is apparent in models which characterize particle size distributions and system porosity (100. IM, 105). More accurate estimates of physical surface areas are contained in models where the reactive phase was isolated and BET surface measurements were conducted (2S. 106). Some models (22 101 used BET surface areas which were determined on in situ core material where the original particle textures and porosity were maintained. 

The term has previously been applied to the effect on chemical shift of specific solute—solvent interactions in solution, and it has been pointed out that these should cause a small paramagnetic solvent shift in this usage, shifts due to anisotropy effects associated with specific interactions are included in the term. In this discussion, however, we shall take to represent the effect of solvent anisotropy in a geometrically specific solute—solvent orientation which has been brought... 

Specific surface area of C5 polyol-boehmite is also much higher (343 m. g" ) than those of C4 polyol-boehmite (168 m. g ) or even of reference boehmite (144 m. g" ) according to the decrease of particle size previously described. In table 1, these specific surface area values measured from Na adsorption/desorption experiment (Sbet) are compared to geometric specific surface area calculated from particle morphological data (Sga,). Sbet values are slightly lower than Sgeo values probably due to particle aggregation. 

The structure of these proteins is often described according to levels called primary, secondary, tertiary, and quaternary structure (see Fig. 7.1). The primary structure is the linear sequence of amino acid residues joined through peptide bonds to form a polypeptide chain. The secondary structure refers to recurring structures (such as the regular structure of the a-helix) that form in short localized regions of the polypeptide chain. The overall three-dimensional conformation of a protein is its tertiary structure. The quarternary structure is the association of polypeptide subunits in a geometrically specific manner. 

Robot Coordinate Systems AU robots are based on geometrical specification of the operation in the robot s work space. For this reason, a geometrical reference system is needed. For the specification of positions and orientation of objects, there exists an international standard, the ISO 9787 Manipulating... 

The three-level feature model is explained in Figure 4-13 by an example. The application feature Guide describes information about dimensions and non-geometric specifications. The form feature defines the shape as a volume-adding protrusion. The feature is represented by unified topology and geometry, created by sweeping as a shape control law. 

ISO 25178-6 2010, Geometric specification of products (GPS) Finishing Quality Areas. Part 6 Methods classification for Finishing Quality Measurement. 

The previous assumptions together with the classical relationships of the different specific absorption rates, depending on the chemical reaction regime used to determine interfacial parameters, lead to the theoretical mean reduced values of the gaseous reactant in the gas exit stream and to absorption efficiency for a gas-liquid dispersion, where a is the geometrical specific interfacial area and Rl is the mean true liquid-side mass transfer coefficient defined for a bubble of diameter dg. ... 

Each burner, regardless of type, is usually mounted in a refractory block or ignition tile (see Fig. 1). This is necessary to confine the primary combustion air introduced through the burner, ensure proper air-fuel-waste mixing, and maintain ignition. Manufacturers each have their own geometric specifications, which have been developed through past experience. 

Example 6.1. Geometric specific surface area of quartz grains... 

The density of quartz is 2.66 g/cm so the geometric specific surface area of the sample is found using Eq. (6.4). 

Isotopic labeling is a very useful and geometrically specific NMR technique when the natural abundance of the nucleus of interest is too low to be detected under normal conditions, such as with and As an example,... 

Stokes-Einstein relationship. Henry s law constant for CO2 in H2O equals 48.6 bar/kmol at 315 K [Danckwerts and Sharma, 1966]. This coefficient is corrected for the ionic strength of the solution [Danckwerts, 1970 Danckwerts and Sharma, 1966]. The geometric specific surface of the packing equals 105 mVmL The calculated results are summarized in Table 14.3.1.B-2. 

The high load catalyst is, on the contrary, supported on a half cylinder support, which has a higher geometric specific surface area with respect to the conventional carriers this means that it is possible to introduce a larger amount of active mass into the reactor, without increasing the thickness of the catalytic layer, as reported in Table 14.2. ... 

Monolith type (ceU density/ waU thickness) Open frontal area (OFA) Hydraulic diameter (mm) Geometric specific area (m /m ) Bulk density (kg/m )... 

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