Structure types cont

TABLE 6 TR3 X3 Cluster Halides, Structure Types, Cluster-Based Electron (CBE), and Mean Distances (in pm) —Cont d... 

In the 75 protein-protein complexes of Lo Conte et al. (1999), 96% of the interfaces have V/Vq in the range 0.97-1.06. Thus, the packing of atoms buried at protein-protein interfaces is very similar to that of the protein interior. In 36 complexes with X-ray structures at a resolution of 2.5 A and better, the V/Vq ratios calculated in the presence of water molecules were distributed over a narrow range of 0.97-1.03 (Fig. 5, top). Therefore, their interfaces are packed like the protein core, except that water, which is almost entirely excluded from the protein core, makes an important contribution to the packing at protein-protein interfaces. There is one exception to this rule in the sample analyzed by Lo Conte et al. (1999) the complex between cytochrome peroxidase and cytochrome c [PDB code, Iccp (Pelletier and Kraut, 1992)]. Its interface is small and has only a few buried atoms and a large volume ratio (1.07). In contrast, the 19 protease-inhibitor and the 19 antigen-antibody complexes of this sample have mean V/Vq ratios of 1.00 and 1.01, respectively. Thus, unlike 5c and the gap index, the volume ratio indicates that these two types of interfaces are close-packed and shows no difference in their packing density, at least for their buried atoms. 

Fig. 48. (cont.) ZSM-5, mazzite. (b) Mazzite the effect of CP versus DEC C MAS NMR on the templates TMA and diaminohexane occluded in the structure (T = 383 K). There are two resonance lines at <5= 57.6 and 58.1 ppm originating respectively from TMA and TMAOH species present in the gmelite cage and lines at <5 = 41, 26, and 24 ppm are from different types of carbon atoms of the symmetric diaminohexane ions incorporated in the 12-ring channel [98K1]. 

TABLE 1 Compilation of [ TfRr Xx](R/A)z-Type Structures—Cont d... 

In the last decades, most researchers have used statistical analysis to discover the relationships between circumstances and accident occurrence. Accident circumstances are usually structured as a flow of events (Rajala N yrynen, 2010) and then analyzed with contingency tables. Also, exploratory techniques (Chi Chen, 2003) and clustering tools (Palamara et al., 2011) have been used to identify sequences of events and their prevalence. Finally, correspondence methods have been applied to explore relationships among certain variables, as between deviations and type of injury of the accidents (Conte et al., 2011). 

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