Spacing distances

The conformational distance does not have to be defined in Cartesian coordinates. Eor comparing polypeptide chains it is likely that similarity in dihedral angle space is more important than similarity in Cartesian space. Two conformations of a linear molecule separated by a single low barrier dihedral torsion in the middle of the molecule would still be considered similar on the basis of dihedral space distance but will probably be considered very different on the basis of their distance in Cartesian space. The RMS distance is dihedral angle space differs from Eq. (12) because it has to take into account the 2n periodicity of the torsion angle. 

Table 12.7 Selected sources of spacing distances with hazardous chemicals (see Bibliography) ...

Minimum recommended spacing distances Flammable liquids Storage of Elammable Liquids in Tanks (HSE, HSG 176) Storage of Elammable Liquids in Containers (HSE, HSG 51) Storage of Highly Elammable Liquids (HSE, CS2) Highly Elammable Materials on Construction Sites (HSE, HSG 3) Storage of Elammable Liquids in Eixed Tanks, up to 10 000 m Total Capacity (HSE, HSG 50)... 

S = effective tray spacing, distance between top of foam, froth, or bubbles, and tray above, in. 

Spacing distances (e.g. between storage tanks, between hazardous areas and admin block/control rooms). Distances to public roads. 

Adequate spacing distance frequently serves to mitigate the consequences of an accidental release of chemicals, e.g. a flammable liquid spillage or toxic gas escape. 

Consultation jlistances (in relation to major hazard and other sites, e.g. LPG, chlorine, for land use planning) Minimum recommended spacing distances... 

Relative positions of storage and process areas control room, laboratories and offices - i.e. areas of highest population density switch-house materials receipt and despatch areas effluent treatment facilities. Spacing distances according to standard guidelines. 

Fig. 29.8. (a) Pattern of points in column-space S (left panel) and in row-space S" (right panel) before column-centering, (b) After column-centering, the pattern in 5 is translated such that the centroid coincides with the origin of space. Distances between points in S are conserved while those in S" are not. (c) After column-standardization, distances between points in S and 5" are changed. Points in 5" are located on a (hyper)sphere centered around the origin of space. 

Factors influencing the selection of materials include spacing (distance from fire exposure), the presence of fire barriers, adequate drainage, and... 

CaMo508 provides a link to calcium channels in biological systems. This mixed oxide contains Mo/O columns, of which groups of four define channels in which the Ca2+ cations reside. There is no clearly defined coordination number for these cations Ca-0 distances range from 2.39 A upwards, there being ten oxygens at fairly regularly spaced distances up to 3.04 A from the Ca2+ (117). 

Fig. 28. Soliton lattice solution of the FvdM model with regularly spaced, distance 1, domain walls. The dashed line corresponds to the incommensurate phase with negligible potential modulation (K = 0). The plateaus represent the commensurate domains.

Where detectors manufactured outside the United States are used, the location and spacing recommendations of the AHJ should be followed. The manufacturer s recommended location and spacing distance should also be taken into account. 

Firefighting for unstable materials is based on generally accepted fire service tactics, provided the unique characteristics of the material are considered. If the material is extremely flammable, then additional spacing distances should be implemented. If it reacts violently with water, other means of extinguishment should be considered. Table 8-14 provides a listing of several unstable, reactive, and water-reactive materials. 

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