Linked Data

Pomter—Identifies addresses of other data items used to create linked data structures. 

Both dynamic permanent set and oil swell resistance are improved on addition of Perkalink 900, indicative of the greater thermal and mechanochemical strength of the cross-links formed from Perkalink 900 compared to sulfidic cross-links. Data are shown in Figures 14.25 and 14.26. 

Table 4.2. DDT Content in Baikal ecosystem links (data from 1989) [25]...

Figure 32 presents the fit of Eq. (63) to the cross-link data. The shaded area displays the constant EISF contribution to S(Q,t). A combined fit to all spectra yields W/4 = 0.84 1013 A4s 1 and rate fixed to the value obtained from the joint fit. The obtained molecular mass melt of linear PDMS chains in very good agreement with the prediction of a 2/f reduction [see Eq. (64)]. 

Figure 8. SANS measurements of R /Fg° and R /Rg° versus A of tetrafunctional polydimethylsiloxane networks. Mw and Mn are weight and number average molecular weights before crosslinking, cp is the polymer fraction in solution before cross-linking. Data from Ref. 20.

Although the quantitation of the cross-linking data is limited, as discussed above, comparison of the cross-linked histones obtained from chromatin with histone complexes obtained in the absence of DNA can help in developing a more detailed picture of histone-histone interactions. An H2A-H2B dimer was obtained by cross-linking of chromatin with short-range cross-linkers (for references, see Section... 

Note added IN Proof Klug et al. (1980) obtained regular fibers by the assembly of histone octamers at high salt. From image reconstruction of these histone fibers a 22-A resolution model was proposed for the histone octamer, which has a 2-fold axis of symmetry and is wedge-shaped. From this structure and the results of various cross-linking data an arrangement of the individual histones within the octamer has been proposed. 

There is good agreement between the overall dimensions of the histone octamer found by Klug et al. and data obtained from other types of histone fibers discussed here. Similarity of cross-linking data of histone octamer fibers, octamer free in solution, and octamer in nucleosomes makes the extrapolation from the octamer model in the fibers to the octameric core of nucleosome valid (Klug et al., 1980). This further substantiates the idea that histones are part of an assembly system, and therefore the histone core of the nucleosome can be regarded as a truncated histone fiber (see Section IV). 

Structure. The nmr spectra, shown in Figure 2, indicates that essentially all fructose molecules in the polymers are in the same conformation. In Table I, nmr peaks from fructan are compared to peaks from known inulin 0-(l->2) linked) and bacterial levan (P-(2->6) linked). Data clearly show the fructan to be of the p-(2- 6) type (27). (Sec Table II.)... 

External Registry Number. A unique "external" identifier assigned to a structure, reaction, 3D model, assay, etc. The external registry number is usually unique across databases, and it can be used as a key to link data from one database or table to another. Any given database may have its own "internal" identifiers that may not be unique across databases. 

Tabic 8.5. Comparison of metal ionic form and cross-linking. Data courtesy of Transgenomic. 

---