Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Complex systems quadrants

The geometry of the complex seems to be of paramount importance in the determination of repulsive interactions in the different quadrants around the metal. The most significant examples are given by the deuteroformylation of monosub-stituted ethylenes in which the aliphatic substituent occupies in the model of the transition state (Fig. 6) preferentially quadrant Q2 in the Pt/(—)-DIOP catalytic system but quadrant Qt in the Rh/(—)-DIOP catalyst although, according to our model, the chirality at the metal atom, as determined by the hydroformylation of (Z)-2-butene, is the same. [Pg.118]

A similar analysis may be carried out for the electron detachment poles as well and the Auger poles (Eq — E 1( )) will obviously be found in the first quadrant of the complex E-plane. With this brief discussion of the pole structure of the complex scaled electron propagator as a common background, its utility in direct and simultaneous treatment of resonances of N+l electron and N-l electron systems becomes manifest e.g., for Be both Be+ (Is-1) 2S Auger and 2P Be- shape resonances have been calculated simultaneously from a single calculation on Be/25,26/. [Pg.240]

A further model has been suggested and this can be refined by calculation [127]. This modified mnemonic considers the interactions for a specific substrate and the hydrogen bonding that is affected by the solvent system. These points have been combined into one model, which contains attractive and repulsive quadrants (Figure 3.2c) [132]. Note that the NW quadrant is now open. Further computational studies have shown this facial model to be in agreement with the substrate-complex interactions within the transition state and experimental results [133]. [Pg.36]

Then along came Halperrfs studies [7]. He had been able to isolate a more advanced intermediate, in which the enamide substrate actually formed a complex with the metal-ligand system. He obtained it in crystalline form, and it was with considerable eagerness that we awaited the X-ray crystallographic analysis results. It turned out that the enamide was lying nicely in the hindered quadrant. [Pg.38]

A closer investigation of the possible modes of operation given by the transistor characteristics shown in Fig. 9.1 reveals that the third-quadrant mode is superior to the first-quadrant mode. It is not possible to achieve amplification at all in the first quadrant while this is easy to achieve in the third quadrant. Thus, circuit designs should utilize the transistor in the third-quadrant mode. However, the range of the input and output voltages do not overlap, which introduces some added complexity in system designs. [Pg.272]

Figure 7.3 Distribution of the first 15 complex poles in the fourth quadrant of the k plane of the quadruple barrier resonant tunneling system with parameters given in the text. Figure 7.3 Distribution of the first 15 complex poles in the fourth quadrant of the k plane of the quadruple barrier resonant tunneling system with parameters given in the text.
As Fig. 16.2 shows, the Profiler is divided into four quadrants and three concentric rings. The quadrants describe the different contexts in which a system will operate and evolve, while the concentric rings represent levels of complexity and uncertainty. [Pg.201]

Chapter 10 on activity systems asserts that choices are the essence of strategy. Without choices there is no strategy. A first step in defining spheres also requires choices to prune problematic customers, products, and operations. Figure 9.3 shows four decision categories that summarize the process. The classification focuses on products, classifying those that are complex (quadrants I and III) or not complex (quadrants II and IV). [Pg.131]

Quadrant III brings complexity without the profits products there should be considered for elimination or simplification. Quadrant IV products could be considered for cost increases. Perhaps extended product features developed in an activity system would differentiate the product and increase the product s value to some customer segments. A distinctive supply chain could support this strategy. [Pg.132]

A more precise axis calculation, the degree method provides an exact measurement of the electrical axis. It allows you to identify a patient s electrical axis by degrees on the hexaxial system, not just by quadrant. It also allows you to determine the axis even if the QRS complex isn t clearly positive or negative in leads I and aVp. To use this method, take the following steps. [Pg.232]


See other pages where Complex systems quadrants is mentioned: [Pg.20]    [Pg.463]    [Pg.567]    [Pg.1020]    [Pg.1021]    [Pg.1022]    [Pg.24]    [Pg.151]    [Pg.351]    [Pg.126]    [Pg.138]    [Pg.202]    [Pg.203]    [Pg.207]    [Pg.562]    [Pg.336]    [Pg.54]    [Pg.56]    [Pg.68]    [Pg.366]    [Pg.71]    [Pg.463]    [Pg.567]    [Pg.243]    [Pg.142]   
See also in sourсe #XX -- [ Pg.202 , Pg.203 ]




SEARCH



Complex systems

Complex systems complexes

Quadrantes

Quadrants

Systems complexity

© 2024 chempedia.info