# SEARCH

** Achirality topological features **

** MOF-5, structure and topology features **

** Topological Features of a Network **

Figure 2. General topological feature of PS translocation and decarboxylation in mammalian cells. PS is synthesized by PSS I and II in endoplasmic reticulum (ER) or mitochondria-associated membrane (MAM). The nascent PS is transported other membranes such as plasma membrane, nucleus, and mitochondria. The PS transported to the mitochondrial outer membrane is then translocated to the inner membrane, in which PS is converted to PE by PS decarboxylase (PSD). The PE formed in mitochondria is dynamic and can be exported to other organelles for membrane biogenesis. |

In contrast to common ANNs, Kohonen networks produce self-organized topological feature maps (Kohonen [1982, 1984]). The basic idea of Kohonen mapping is that information in data usually contains not only an algebraic but also a topological aspect. These double aspect is shown schematically in Fig. 8.25 where the data and the structure of them are composed. [Pg.274]

The D matrix plays an important role in the forthcoming theory because it contains all topological features of an electronic manifold in a region surrounded by a contour F as will be explained next. [Pg.648]

McAllister, M. A., A. Perczel, P. Csaszar, and I. G. Csizmadia. 1993a. Peptide Models 5. Topological Features of Molecular Mechanics and Ab Initio 4D-Ramachandran Maps. Conformational Data for Ac-L-Ala-L-Ala-NHMe and For-L-Ala-L-Ala-NH2. J. Mol. Struct. (Theochem) 288,181-198. [Pg.150]

Below, we give a sampling of the sorts of dynamical behaviors that can immediately be deduced from basic topological features of . [Pg.269]

McAllister, M. A., Perczel, P. Csaszar, W. Viviani, J.-L. Rivail, and I. G. Csizmadia. 1993b. Peptide Models 4. Topological Features of Molecular Mechanics and Ab Initio 2D-Ramachandran Maps. Conformational Data for For-Gly-NH2, For-L-Ala-NH2, Ac-l-Ala-NHMe and For-L-Val-NH2. J. Mol. Struct. (Theochem) 288, 161-179. Mehrotra, P. K., M. Mezei, and D. L. Beveridge. 1984. Monte Carlo Determination of the Internal Energies of Hydration for the Ala Dipeptide in the C7, C5, aR, and Pn Conformations. Int. J. Quantum Chem. Quantum Biol. Symp. 11, 301-308. [Pg.150]

All three proteins were analyzed at 3.0 A resolution. Experiments were performed on a portion of the relative density map containing an entire connected protein. In order to discern effects of topological features just outside the boundaries of this volume, our analysis was extended 5.0 A outside the boundaries on all sides of this volume. [Pg.129]

Using the more advanced quantum chemical computational methods it is now possible to determine the fundamental electronic properties of zeolite structural units. The quantum chemical basis of Loewenstein s "aluminum avoidance" rule is explored, and the topological features of energy expectation value functionals within an abstract "nuclear charge space" model yield quick estimates for energy relations for zeolite structural units. [Pg.145]

The chemical bonding and the possible existence of non-nuclear maxima (NNM) in the EDDs of simple metals has recently been much debated [13,27-31]. The question of NNM in simple metals is a diverse topic, and the research on the topic has basically addressed three issues. First, what are the topological features of simple metals This question is interesting from a purely mathematical point of view because the number and types of critical points in the EDD have to satisfy the constraints of the crystal symmetry [32], In the case of the hexagonal-close-packed (hep) structure, a critical point network has not yet been theoretically established [28]. The second topic of interest is that if NNM exist in metals what do they mean, and are they important for the physical properties of the material The third and most heavily debated issue is about numerical methods used in the experimental determination of EDDs from Bragg X-ray diffraction data. It is in this respect that the presence of NNM in metals has been intimately tied to the reliability of MEM densities. [Pg.40]

** Achirality topological features **

** MOF-5, structure and topology features **

** Topological Features of a Network **

© 2019 chempedia.info