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Autonomous transformation from

Autonomously replicating sequence, ARS a DNA sequence that eonfers the ability to undergo high frequency autonomous transformation. Such sequences were first identified in the yeast, Saccharo-myces cerevisiae, in which they represent chromosomal origins of replication, and they have since been derived from a variety of eukaryotes including humans. Two important sequences are important for ARS function domain A [5 (A/T)TTTAT(A/G) TTT(A/T) 3 ] and domain B [5 CmTAGC(An ) (A/T)(A/T) 3 ]. Domain B is located 50-100 bp 3 to domain A. See Yeast artificial chromosome. [Pg.56]

For time-dependent Hamiltonian systems we chose in Section IVB to use a normal form that decouples the reactive mode from the bath modes, but does not attempt a decoupling of the bath modes. This procedure is always safe, but in many cases it will be overly cautious. If it is relaxed, the dynamics within the center manifold is also transformed into a (suitably defined) normal form. This opens the possibility to study the dynamics within the TS itself, as has been done in the autonomous case, for example in Ref. 107. One can then try to identify structures in the TS that promote or inhibit the transport from the reactant to the product side. [Pg.232]

The most widely used qualitative model for the explanation of the shapes of molecules is the Valence Shell Electron Pair Repulsion (VSEPR) model of Gillespie and Nyholm (25). The orbital correlation diagrams of Walsh (26) are also used for simple systems for which the qualitative form of the MOs may be deduced from symmetry considerations. Attempts have been made to prove that these two approaches are equivalent (27). But this is impossible since Walsh s Rules refer explicitly to (and only have meaning within) the MO model while the VSEPR method does not refer to (is not confined by) any explicitly-stated model of molecular electronic structure. Thus, any proof that the two approaches are equivalent can only prove, at best, that the two are equivalent at the MO level i.e. that Walsh s Rules are contained in the VSEPR model. Of course, the transformation to localised orbitals of an MO determinant provides a convenient picture of VSEPR rules but the VSEPR method itself depends not on the independent-particle model but on the possibility of separating the total electronic structure of a molecule into more or less autonomous electron pairs which interact as separate entities (28). The localised MO description is merely the simplest such separation the general case is our Eq. (6)... [Pg.78]

Once a cell has become transformed, ie, capable of autonomous proliferation through mutation of some of its genes, these characteristics are heritable from cell to cell. [Pg.210]

The idea of the phase plane3 is to let the time be a parametric variable along the curve (u(t), v(r)) in the u, v plane. The equations are often autonomous (i.e., the right-hand sides are not functions of t) but, when they are not, they can be made so by adding w(t) = t. Then the third differential equation is w = 1. If necessary, a nonvanishing function of F and G, for example K(u, v), can be divided into each equation. This distorts the time that must be recovered from a third equation. A particularly useful transformation of this sort is given by K2 = F2 + G2, for then the independent variable is the path length, s, and... [Pg.76]

The components making the autonomous system were integrated electrically at 400 V (TN-S) 50 Hz. A separate 315-kVA, 22/0.4-kV transformer connected a 1.5 km cable, transmitting power from the autonomous system to the customer substation. All the 10 households were connected to the customer substation at 230V, which is the standard voltage level in Norway. The customer substation also... [Pg.94]

Nowadays, Semantic Web is a much-hyped expression that is used (and misused) by many people from different areas of human endeavor. On Semantic Web computers we will be able to autonomously search for different information items and process them and provide answers to questions that currently require many hours of effort by human experts. However, before we can connect the individual pieces of information, we have to find and transform them to computer-readable form. Unfortunately, this is not a trivial task. [Pg.117]

As argued in autonomous cases, g(p, q e) implies that while the functional value of Tf(p,q) is exactly equal to /(p, q), the transformed, usually complicated, nonhnear function becomes represented as a function of p and q, and , whose functional form differs from the original /... [Pg.131]


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