Three-dimensional arrangement elements

The three-dimensional arrangements of secondary structural elements of proteins in turn form distinctive patterns or motifs. These are most readily recognized... 

I crtiar) stnicliirc the three-dimensional arrangement of secondary structure elements that defines the overall conformation of the (globular) protein (see Figure 1.5). 

APFIM provides information concerning the three-dimensional arrangement of elements within the sample at atomic resolution. 

The Vessel System, including the support subsystem, is analyzed using the NSSS finite-element model and response spectra input generated by the plant seismic analysis discussed in Section 3.7.2. This three-dimensional finite-element model is based on the Vessel System arrangement and is shown in Figure 3.7-6. The analysis is performed using the ANSYS computer code and the analysis procedures discussed in Section 3.7.3.1.1. (Ref. 11)... 

Perhaps this is a good place to discuss some other points of terminology. How is a periodic table different from a periodic system The term periodic system is the more general of the two. The periodic system is the more abstract notion that holds that there is a fundamental relationship among the elements. Once it becomes a matter of displaying the periodic system, one can choose a three-dimensional arrangement, a circular shape, or any number of different two-dimensional tables. Of course, the term table strictly implies a two-dimensional dimensional representation. So although the term periodic table is by fiu- the best known of the three terms law, system, and table, it is actually the most restricted. 

Ionic compounds do not exist in the form of molecules but as three-dimensional arrangements of oppositely charged ions. The sum of the atomic weights of the elements in the formula of ionic compounds is called the formula weight and is used in calculations somewhat like the molecular weight of molecular compounds. 

Figure 5. Molecular denaturation. The loss of the cushioning effect of water, analogous to a fly striking a windshield, induces structural changes in the three dimensional arrangement of the molecular elements. This is also known as the brick wall effect.

This refers to the three-dimensional arrangements of the polypeptide chain, which are primarily stabilized by local, peptide backbone interactions. There are two very commonly occurring secondary structural elements a-helix and fi-sheet. 

Therefore it is reasonable to prepare already the data acquisition for a three dimensional evaluation in cone-beam-technique by means of two-dimensional detectors. The system is already prepared to integrate a second detector- system for this purpose. An array of up to four flat panel detectors is foreseen. The detector- elements are based on amorphous silicon. Because of the high photon energy and the high dose rates special attention was necessary to protect the read-out electronics. Details of the detector arrangement and the software for reconstruction, visualisation and comparison between the CT results and CAD data are part of a separate paper during this conference [2]. 

Domains are formed by different combinations of secondary structure elements and motifs. The a helices and p strands of the motifs are adjacent to each other in the three-dimensional structure and connected by loop regions. Sequentially adjacent motifs, or motifs that are formed from consecutive regions of the primary structure of a polypeptide chain, are usually close together in the three-dimensional structure (Figure 2.20). Thus to a first approximation a polypeptide chain can be considered as a sequential arrangement of these simple motifs. The number of such combinations found in proteins is limited, and some combinations seem to be structurally favored. Thus similar domain structures frequently occur in different proteins with different functions and with completely different amino acid sequences. 

Efcr odlc Round Tjble" (4 updite 3 the three-dimensional period table with a modem mderslanding of electrode waUgmalloos. foui pairs of wooden disks are arranged around e-csntrel axis, with each cfsk divided into bands repraseorirg electron orbitals. The disks rotate so students 111 discover relationships between the elements. 

Borides, in contrast to carbides and nitrides, are characterized by an unusual structural complexity for both metal-rich and B-rich compositions. This complexity has its origin in the tendency of B atoms to form one- two-, or three-dimensional covalent arrangements and to show uncommon coordination numbers because of their large size (rg = 0.88 10 pm) and their electronic structure (deficiency in valence electrons). The structures of the transition-element borides are well established " . 

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